WO2022218503A1 - Compositions de npl comprenant de l'arn et procédés de préparation, de stockage et d'utilisation de celles-ci - Google Patents

Compositions de npl comprenant de l'arn et procédés de préparation, de stockage et d'utilisation de celles-ci Download PDF

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Publication number
WO2022218503A1
WO2022218503A1 PCT/EP2021/059460 EP2021059460W WO2022218503A1 WO 2022218503 A1 WO2022218503 A1 WO 2022218503A1 EP 2021059460 W EP2021059460 W EP 2021059460W WO 2022218503 A1 WO2022218503 A1 WO 2022218503A1
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WO
WIPO (PCT)
Prior art keywords
composition
rna
lipid
anions
substantially free
Prior art date
Application number
PCT/EP2021/059460
Other languages
English (en)
Inventor
Steffen Panzner
Ugur Sahin
Jorrit-Jan KRIJGER
Kaushik THANKI
Bakul Subodh BHATNAGAR
Ramin Darvari
Sumit Luthra
Serguei Tchessalov
Original Assignee
BioNTech SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BioNTech SE filed Critical BioNTech SE
Priority to PCT/EP2021/059460 priority Critical patent/WO2022218503A1/fr
Priority to US18/036,677 priority patent/US20230414747A1/en
Priority to EP21807117.3A priority patent/EP4243788A1/fr
Priority to CA3198742A priority patent/CA3198742A1/fr
Priority to PCT/EP2021/081675 priority patent/WO2022101470A1/fr
Priority to IL302771A priority patent/IL302771A/en
Priority to JP2023528666A priority patent/JP2023549266A/ja
Priority to TW110142348A priority patent/TW202237148A/zh
Priority to MX2023005696A priority patent/MX2023005696A/es
Priority to AU2021379090A priority patent/AU2021379090A1/en
Priority to KR1020237020261A priority patent/KR20230121752A/ko
Priority to AU2022256732A priority patent/AU2022256732A1/en
Priority to JP2024505491A priority patent/JP2024514364A/ja
Priority to CA3215103A priority patent/CA3215103A1/fr
Priority to PCT/EP2022/059555 priority patent/WO2022218891A2/fr
Priority to EP22719594.8A priority patent/EP4322925A2/fr
Publication of WO2022218503A1 publication Critical patent/WO2022218503A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/51—Nanocapsules; Nanoparticles
    • A61K9/5107—Excipients; Inactive ingredients
    • A61K9/5123—Organic compounds, e.g. fats, sugars
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K39/12—Viral antigens
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/19—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles lyophilised, i.e. freeze-dried, solutions or dispersions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A61P31/14—Antivirals for RNA viruses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/51—Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/53—DNA (RNA) vaccination
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/555—Medicinal preparations containing antigens or antibodies characterised by a specific combination antigen/adjuvant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/555—Medicinal preparations containing antigens or antibodies characterised by a specific combination antigen/adjuvant
    • A61K2039/55511—Organic adjuvants
    • A61K2039/55555—Liposomes; Vesicles, e.g. nanoparticles; Spheres, e.g. nanospheres; Polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/57—Medicinal preparations containing antigens or antibodies characterised by the type of response, e.g. Th1, Th2
    • A61K2039/572—Medicinal preparations containing antigens or antibodies characterised by the type of response, e.g. Th1, Th2 cytotoxic response
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/57—Medicinal preparations containing antigens or antibodies characterised by the type of response, e.g. Th1, Th2
    • A61K2039/575—Medicinal preparations containing antigens or antibodies characterised by the type of response, e.g. Th1, Th2 humoral response

Definitions

  • the present disclosure relates generally to the field of lipid nanoparticle (LNP) compositions comprising RNA, methods for preparing and storing such compositions, and the use of such compositions in therapy.
  • LNP lipid nanoparticle
  • RNA recombinant nucleic acid
  • the advantages of using RNA include transient expression and a nontransforming character. RNA does not need to enter the nucleus in order to be expressed and moreover cannot integrate into the host genome, thereby eliminating diverse risks such as oncogenesis.
  • RNA may be delivered by so-called nanoparticle formulations containing RNA and a nanoparticle forming vehicle, e.g., a cationic lipid (such as a permanently charged cationic lipid), a mixture of a cationic lipid and one or more additional lipids, or a cationic polymer.
  • a nanoparticle forming vehicle e.g., a cationic lipid (such as a permanently charged cationic lipid), a mixture of a cationic lipid and one or more additional lipids, or a cationic polymer.
  • the fate of such nanoparticle formulations is controlled by diverse key-factors (e.g., size and size distribution of the nanoparticles; etc.).
  • LNPs comprising ionizable lipids may display advantages in terms of targeting and efficacy in comparison to other RNA nanoparticle products. However, it is challenging to obtain sufficient shelf life as required for regular pharmaceutical use. It is said that for stabilization, LNPs comprising ionizable lipids need to be frozen at much lower temperatures, such as -80°C, which poses substantial challenges on the cold chain, or they can only be stored above the freezing temperature, e.g. 5°C, where only limited stability can be obtained.
  • RNA in solution or in LNPs undergoes slow fragmentation. Furthermore, in the presence of phosphate buffered saline (PBS), RNA has the tendency to adopt a very stable folded form which is hardly accessible for translation. Both mechanisms, i.e. , fragmentation and formation of this stable RNA fold, are temperature dependent and result in loss of intact and accessible RNA thereby limiting the stability of the liquid product; however, they are essentially absent in the frozen state.
  • PBS phosphate buffered saline
  • compositions which comprise LNPs comprising ionizable lipids and RNA and which are stable and can be stored in a temperature range compliant to regular technologies in pharmaceutical practice, in particular at a temperature of about -25°C or even in liquid form at temperatures between +2 and +20°C; (ii) compositions which are ready to use; (iii) compositions which, preferably, can repeatably be frozen and thawed; and (iv) methods for preparing and storing such compositions.
  • the present disclosure addresses these and other needs.
  • compositions and methods described herein fulfill the above- mentioned requirements.
  • a specific buffer substance in particular tris(hydroxymethyl)aminomethane (Tris) and its protonated form, in a low concentration (e.g., at most about 25 mM) and excluding inorganic phosphate anions as well as citrate anions and anions of EDTA, it is possible to prepare compositions which are stable and which can be stored at about -25°C or even in liquid form.
  • Tris tris(hydroxymethyl)aminomethane
  • the present disclosure provides a composition comprising lipid nanoparticles (LNPs) dispersed in an aqueous phase, wherein the LNPs comprise a cationically ionizable lipid and RNA;
  • the aqueous phase comprises a buffer system comprising a buffer substance selected from the group consisting of Tris and its protonated form, bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane (Bis- Tris-methane) and its protonated form, and triethanolamine (TEA) and its protonated form, and the monovalent anion being selected from the group consisting of chloride, acetate, glycolate, lactate, the anion of morpholinoethanesulfonic acid (MES), the anion of 3-(N-morpholino)propanesulfonic acid (MOPS), and the anion of 2-[4-(2-hydroxyethyl)piperazin-l-yl]ethanesulfonic acid (HEPE)
  • RNA LNP composition having improved RNA integrity after a freeze-thaw-cycle compared to a composition comprising the same buffer substance in a concentration of 50 mM.
  • the claimed composition provides improved stability, can be stored in a temperature range compliant to regular technologies in pharmaceutical practice, and provides a ready- to-use composition.
  • the buffer substance is Tris and its protonated form, i.e., a mixture of Tris and its protonated form.
  • the monovalent anion is selected from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 3-(N-morpholino)propanesulfonate, or from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 2-[4-(2- hydroxyethyl)piperazin-l-yl]ethanesulfonate, preferably from the group consisting of chloride, acetate, lactate, and morpholinoethanesulfonate, more preferably from the group consisting of chloride, acetate, and morpholinoethanesulfonate, or from the group consisting of chloride, acetate, and lactate, such as chloride or acetate.
  • the buffer substance is Tris and its protonated form and the monovalent anion is selected from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 3-(N-morpholino)propanesulfonate, or from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 2-[4-(2-hydroxyethyl)piperazin-l-yl]ethanesulfonate, preferably from the group consisting of chloride, acetate, lactate, and morpholinoethanesulfonate, more preferably from the group consisting of chloride, acetate, and morpholinoethanesulfonate, or from the group consisting of chloride, acetate, and lactate, such as chloride or acetate.
  • the concentration of the buffer substance, in particular the total concentration of Tris and its protonated form, in the composition is at most about 20 mM, such as at most about 19 mM, at most about 18 mM, at most about 17 mM, at most about 16 mM, at most about 15 mM, at most about 14 mM, at most about 13 mM, at most about 12 mM, at most about 11 mM, or at most about 10 mM.
  • the lower limit of the buffer substance, in particular Tris and its protonated form, in the composition is at least about 1 mM, preferably at least about 2 mM, such as at least about 3 mM, at least about 4 mM, at least about 5 mM, at least about 6 mM, at least about 7 mM, at least about 8 mM, or at least about 9 mM.
  • the concentration of the buffer substance, in particular the total concentration of Tris and its protonated form, in the composition may be between about 1 mM and about 20 mM, such as between about 2 mM and about 15 mM, between about 5 mM and about 14 mM, between about 7 mM and about 13 mM, between about 8 mM and about 12 mM, between about 9 mM and about 11 mM, such as about 10 mM.
  • the aqueous phase is substantially free of inorganic sulfate anions and/or carbonate anions and/or dibasic organic acid anions and/or polybasic organic acid anions.
  • at least one of these criteria applies.
  • the aqueous phase is substantially free of inorganic sulfate anions.
  • the aqueous phase is substantially free of carbonate anions.
  • the aqueous phase is substantially free of dibasic organic acid anions.
  • the aqueous phase is substantially free of polybasic organic acid anions.
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of carbonate anions.
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of dibasic organic acid anions.
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of polybasic organic acid anions.
  • the aqueous phase is substantially free of carbonate anions and substantially free of dibasic organic acid anions.
  • the aqueous phase is substantially free of carbonate anions and substantially free of polybasic organic acid anions. In a further embodiment of this second subgroup, the aqueous phase is substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of dibasic organic acid anions.
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of polybasic organic acid anions.
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the aqueous phase is substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the composition comprises a cryoprotectant.
  • the composition is substantially free of a cryoprotectant.
  • the aqueous phase is substantially free of inorganic sulfate anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions, and the composition comprises a cryoprotectant
  • the aqueous phase is substantially free of dibasic organic acid anions, and the composition comprises a cryoprotectant
  • the aqueous phase is substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of carbonate anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of dibasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition comprises a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of dibasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of carbonate anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of dibasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions and substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant;
  • the aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the composition is substantially free of a cryoprotectant.
  • said cryoprotectant comprises one or more compounds selected from the group consisting of carbohydrates and sugar alcohols.
  • the cryoprotectant may be selected from the group consisting of sucrose, glucose, glycerol, sorbitol, and a combination thereof.
  • the composition comprises sucrose and/or glycerol as cryoprotectant.
  • the concentration of the cryoprotectant in the composition is at least 1% w/v, such as at least 2% w/v, at least 3% w/v, at least 4% w/v, at least 5% w/v, at least 6% w/v, at least 7% w/v, at least 8% w/v, or at least 9% w/v.
  • the concentration of the cryoprotectant in the composition is up to 25% w/v, such as up to 20% w/v, up to 19% w/v, up to 18% w/v, up to 17% w/v, up to 16% w/v, up to 15% w/v, up to 14% w/v, up to 13% w/v, up to 12% w/v, or up to 11% w/v.
  • the concentration of the cryoprotectant in the composition is 1% w/v to 20% w/v, such as 2% w/v to 19% w/v, 3% w/v to 18% w/v, 4% w/v to 17% w/v, 5% w/v to 16% w/v, 5% w/v to 15% w/v, 6% w/v to 14% w/v, 7% w/v to 13% w/v, 8% w/v to 12% w/v, 9% w/v to 11 % w/v, or about 10% w/v.
  • the composition comprises a cryoprotectant (in particular, sucrose and/or glycerol) in a concentration of from 5% w/v to 15% w/v, such as from 6% w/v to 14% w/v, from 7% w/v to 13% w/v, from 8% w/v to 12% w/v, or from 9% w/v to 11% w/v, or in a concentration of about 10% w/v.
  • a cryoprotectant in particular, sucrose and/or glycerol
  • the cryoprotectant is present in a concentration resulting in an osmolality of the composition in the range of from about 50 x 10 '3 osmol/kg to about 400 x 10 '3 osmol/kg (such as from about 50 x 10 '3 osmol/kg to about 390 x 10 '3 osmol/kg, from about 60 x 10 ‘3 osmol/kg to about 380 x 10 ‘3 osmol/kg, from about 70 x 10 '3 osmol/kg to about 370 x 10 '3 osmol/kg, from about 80 x 10 -3 osmol/kg to about 360 x 10 -3 osmol/kg, from about 90 x 10 -3 osmol/kg
  • osmol/kg to about 320 x 10 -3 osmol/kg from about 160 x 10 '3 osmol/kg to about 310 x 10 '3 osmol/kg, from about 180 x 10 ‘3 osmol/kg to about 300 x 10 3 osmol/kg, or from about 200 x 10 '3 osmol/kg to about 300 x 10 '3 osmol/kg), based on the total weight of the composition.
  • the monovalent anion is selected from the group consisting of chloride, acetate, glycolate, and lactate, and the concentration of the monovalent anion (in particular the total concentration of all monovalent anions) in the composition is at most equal to the concentration of the buffer substance in the composition.
  • the concentration of the monovalent anion (in particular the total concentration of all monovalent anions) in the composition may be less than the concentration of the buffer substance in the composition.
  • the concentration of the buffer substance, in particular Tris and its protonated form, in the composition is at most about 20 mM
  • the concentration of the monovalent anion (in particular the total concentration of all monovalent anions) in the composition is at most equal to about 20 mM, e.g., less than 20 mM.
  • the concentration of the monovalent anion, such as chloride and/or acetate (in particular the total concentration of all monovalent anions) in the composition may be less than about 15 mM, such as less than about 14 mM, less than about 13 mM, less than about 12 mM, less than about 11 mM, less than about 10 mM, less than about 9 mM, less than about 8 mM, less than about 7 mM, less than about 6 mM, or less than about 5 mM.
  • the chloride concentration in the composition is as defined above (e.g., less than about 15 mM, etc.) and the composition does not comprise acetate.
  • the acetate concentration in the composition is as defined above (e.g., less than about 15 mM, etc.) and the composition does not comprise chloride.
  • the sodium concentration in the aqueous phase and/or composition is less than 20 mM, such as less than about 15 mM, e.g., less than about 14 mM, less than about 13 mM, less than about 12 mM, less than about 11 mM, less than about 10 mM, less than about 9 mM, less than about 8 mM, less than about 7 mM, less than about 6 mM, or less than about 5 mM.
  • the monovalent anion is selected from the group consisting of the anions of MES, MOPS and HEPES, and the concentration of the monovalent anion (in particular the total concentration of all monovalent anions) in the composition is at least equal to the concentration of the buffer substance in the composition.
  • the concentration of the monovalent anion (in particular the total concentration of all monovalent anions) in the composition may be higher than the concentration of the buffer substance in the composition.
  • the concentration of the buffer substance, in particular Tris and its protonated form, in the composition is at most about 20 mM
  • the concentration of the monovalent anion (in particular the total concentration of all monovalent anions) in the composition is at least equal to about 20 mM, e.g., higher than 20 mM.
  • the concentration of the monovalent anion (in particular the total concentration of all monovalent anions) in the composition may be higher than about 20 mM, such as higher than about 21 mM, higher than about 22 mM, higher than about 23 mM, higher than about 24 mM, higher than about 25 mM, higher than about 26 mM, higher than about 27 mM, higher than about 28 mM, higher than about 29 mM, or higher than about 30 mM, and preferably at most 50 mM, such as at most 45 mM, at most 40 mM or at most 35 mM.
  • the pH of the composition is between about 6.5 and about 8.0.
  • the pH of the composition may be between about 6.9 and about 7.9, such as between about 7.0 and about 7.9, between about 7.1 and about 7.8, between about 7.2 and about 7.7, between about 7.3 and about 7.6, between about 7.4 and about 7.6, or about 7.5.
  • the composition comprises water as the main component and/or the total amount of solvent(s) other than water contained in the composition is less than about 1.0% (v/v).
  • the amount of water contained in the composition may be at least 50% (w/w), such as at least at least 55% (w/w), at least 60% (w/w), at least 65% (w/w), at least 70% (w/w), at least 75% (w/w), at least 80% (w/w), at least 85% (w/w), at least 90% (w/w), or at least 95% (w/w).
  • the amount of water contained in the composition may be at least 50% (w/w), such as at least at least 55% (w/w), at least 60% (w/w), at least 65% (w/w), at least 70% (w/w), at least 75% (w/w), at least 80% (w/w), at least 85% (w/w), or at least 90% (w/w). If the composition is substantially free of a cryoprotectant, the amount of water contained in the composition may be at least 95% (w/w).
  • the total amount of solvent(s) other than water contained in the composition may be less than about 1.0% (v/v), such as less than about 0.9% (v/v), less than about 0.8% (v/v), less than about 0.7% (v/v), less than about 0.6% (v/v), less than about 0.5% (v/v), less than about 0.4% (v/v), less than about 0.3% (v/v), less than about 0.2% (v/v), less than about 0.1% (v/v), less than about 0.05% (v/v), or less than about 0.01% (v/v).
  • a cryoprotectant which is liquid under normal conditions will not be considered as a solvent other than water but as cryoprotectant.
  • the above optional limitation that the total amount of solvent(s) other than water contained in the composition may be less than about 1.0% (v/v) does not apply to cryoprotectants which are liquids under normal conditions.
  • the osmolality of the composition is at most about 400 x 10 -3 osmol/kg, such as at most about 390 x 10 -3 osmol/kg, at most about 380 x 10 -3 osmol/kg, at most about 370 x 10 -3 osmol/kg, at most about 360 x 10 -3 osmol/kg, at most about 350 x 10 -3 osmol/kg, at most about 340 x 10 -3 osmol/kg, at most about 330 x 10 -3 osmol/kg, at most about 320 x 10 -3 osmol/kg, at most about 310 x 10 -3 osmol/kg, or at most about 300 x 10 -3 osmol/kg.
  • the osmolality of the composition may be below 300 x 10 -3 osmol/kg, such as at most about 250 x 10 -3 osmol/kg, at most about 200 x 10 -3 osmol/kg, at most about 150 x 10 '3 osmol/kg, at most about 100 x 10 "3 - osmol/kg, at most about 50 x 10 -3 osmol/kg, at most about 40 x 10 -3 osmol/kg, or at most about 30 x 10 '3 osmol/kg.
  • the composition comprises a cryoprotectant
  • the main part of the osmolality of the composition is provided by the cryoprotectant.
  • the cryoprotectant may provide at least 50%, such as at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, or at least 90%, of the osmolality of the composition.
  • the concentration of the RNA in the composition is about 5 mg/1 to about 150 mg/1.
  • the concentration of the RNA in the composition may be about 10 mg/1 to about 140 mg/1, such as about 20 mg/1 to about 130 mg/1, about 25 mg/1 to about 125 mg/1, about 30 mg/1 to about 120 mg/1, about 35 mg/1 to about 115 mg/1, about 40 mg/1 to about 110 mg/1, about 45 mg/1 to about 105 mg/1, or about 50 mg/1 to about 100 mg/1.
  • the buffer substance is Tris and its protonated form
  • the pH of the composition is between about 6.5 and about 8.0
  • the concentration of the RNA in the composition is about 5 mg/1 to about 150 mg/1.
  • it is preferred that the pH of the composition is between about 6.9 and about 7.9 and the concentration of the RNA in the composition is about 25 mg/1 to about 125 mg/1, such as about 30 mg/1 to about 120 mg/1.
  • the buffer substance is Tris and its protonated form; the pH of the composition is between about 6.9 and about 7.9; the concentration of the RNA in the composition is about 30 mg/1 to about 120 mg/1; the aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acids and substantially free of polybasic organic acids; and the composition comprises a cryoprotectant.
  • the buffer substance is Tris and its protonated form; the pH of the composition is between about 6.9 and about 7.9; the concentration of the RNA in the composition is about 30 mg/1 to about 120 mg/1; the aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acids and substantially free of polybasic organic acids; and the composition is substantially free of a cryoprotectant.
  • the cationically ionizable lipid comprises a head group which includes at least one nitrogen atom which is capable of being protonated under physiological conditions.
  • the cationically ionizable lipid may have the structure of Formula (I): or a pharmaceutically acceptable salt, tautomer, prodrug or stereoisomer thereof, wherein L 1 , L 2 , G 1 G 2 , G 3 R 1 , R 2 , and R 3 are as defined herein.
  • the cationically ionizable lipid is selected from the following: structures 1-1 to 1-36 (shown herein); and/or structures A to F (shown herein); and/or N,N- dimethyl-2,3-dioleyloxypropylamine (DODMA), 1 ,2-dioleoyl-3-dimethylammonium-propane (DODAP), heptatriaconta-6,9,28,31 -tetraen-19-yl-4-(dimethylamino)butanoate (DLin-MC3-DMA), and 4-((di((9Z, 12Z)-octadeca-9, 12-dien- 1 -yl)amino)oxy)-N,N-dimethyl-4-oxobutan- 1 -amine (DPL- 14).
  • the cationically ionizable lipid is the lipid having the structure 1-3.
  • the LNPs further comprise one or more additional lipids.
  • the one or more additional lipids are selected from the group consisting of polymer conjugated lipids, neutral lipids, steroids, and combinations thereof.
  • the LNPs comprise the cationically ionizable lipid as described herein, a polymer conjugated lipid (e.g ., a pegylated lipid or a polysarcosine-lipid conjugate or a conjugate of polysarcosine and a lipid-like material), a neutral lipid (e.g., DSPC), and a steroid (e.g., cholesterol).
  • a polymer conjugated lipid e.g ., a pegylated lipid or a polysarcosine-lipid conjugate or a conjugate of polysarcosine and a lipid-like material
  • a neutral lipid e.g., DSPC
  • a steroid e.g., cholesterol
  • the LNPs further comprise a polymer conjugated lipid as one of the one or more additional lipids
  • the polymer conjugated lipid is a pegylated lipid.
  • the pegylated lipid may have the following structure: or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof, wherein R 12 , R 13 , and w are as defined herein.
  • the LNPs further comprise a polymer conjugated lipid as one of the one or more additional lipids
  • the polymer conjugated lipid is a polysarcosine-lipid conjugate or a conjugate of polysarcosine and a lipid-like material.
  • the polysarcosine-lipid conjugate or conjugate of polysarcosine and a lipid-like material may be a member selected from the group consisting of a polysarcosine- diacylglycerol conjugate, a polysarcosine-dialkyloxypropyl conjugate, a polysarcosine-phospholipid conjugate, a polysarcosine-ceramide conjugate, and a mixture thereof.
  • the neutral lipid is a phospholipid.
  • phospholipid is preferably selected from the group consisting of phosphatidylcholines, phosphatidylethanolamines, phosphatidylglycerols, phosphatidic acids, phosphatidylserines and sphingomyelins.
  • phospholipids include distearoylphosphatidylcholine (DSPC), dioleoylphosphatidylcholine (DOPC), dimyristoylphosphatidylcholine (DMPC), dipentadecanoylphosphatidylcholine, dilauroylphosphatidylcholine, dipalmitoylphosphatidylcholine (DPPC), diarachidoylphosphatidylcholine (DAPC), dibehenoylphosphatidylcholine (DBPC), ditricosanoylphosphatidylcholine (DTPC), dilignoceroylphatidylcholine (DLPC), palmitoyloleoyl- phosphatidylcholine (POPC), l,2-di-0-octadecenyl-sn-glycero-3-phosphocholine (18:0 Diether PC), 1- oleoyl-2-cholesterylhemisuccinoyl
  • the LNPs further comprise a steroid as one of the one or more additional lipids
  • the steroid is a sterol such as cholesterol
  • the aqueous phase does not comprise a chelating agent.
  • the LNPs comprise at least about 75% of the RNA comprised in the composition.
  • the LNPs may comprise at least about 76%, such as at least about 77%, at least about 78%, at least about 79%, at least about 80%, at least about 81%, at least about 82%, at least about 83%, at least about 84%, at least about 85%, at least about 86%, at least about 87%, at least about 88%, at least about 89%, at least about 90%, at least about 91%, at least about 92%, at least about 93%, at least about 94%, or at least about 95% of the RNA comprised in the composition.
  • the RNA (such as mRNA) is encapsulated within or associated with the LNPs.
  • the RNA (such as mRNA) comprises a modified nucleoside in place of uridine.
  • the modified nucleoside may be selected from pseudouridine (y), N 1 -methyl-pseudouridine (m 1y), and 5-methyl- uridine (m5U).
  • the RNA comprises one or more of the following (a) a 5’ cap, such as a capl or cap2 structure; (b) a 5’ UTR; (c) a 3’ UTR; and (d) a poly-A sequence, such as a poly-A sequence comprising at least 100 nucleotides, wherein the poly-A sequence preferably is an interrupted sequence of A nucleotides.
  • the RNA (such as mRNA) encodes one or more polypeptides.
  • the one or more polypeptides may comprise an epitope for inducing an immune response against an antigen in a subject.
  • the RNA (such as mRNA) comprises an open reading frame (ORF) encoding an amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof.
  • the RNA (such as mRNA) comprises an ORF encoding a full-length SARS-CoV2 S protein variant with proline residue substitutions at positions 986 and 987 of SEQ ID NO: 1.
  • the SARS-CoV2 S protein variant may have at least 80% identity to SEQ ID NO: 7.
  • the composition is in frozen form.
  • the RNA integrity after thawing the frozen composition is at least 50%, such as at least 52%, at least 54%, at least 55%, at least 56%, at least 58%, or at least 60%, e.g., after thawing the frozen composition which has been stored at -20°C.
  • the size (Z av erage) (and/or size distribution and/or polydispersity index (PDI)) of the LNPs after thawing the frozen composition is equal to the size (Z average ) (and/or size distribution and/or PDI) of the LNPs before the composition has been frozen.
  • the size (Zaverage) of the LNPs after thawing the frozen composition is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm.
  • the PDI of the LNPs after thawing the frozen composition is less than 0.3, preferably less than 0.2, more preferably less than 0.1.
  • the size (Z average ) of the LNPs after thawing the frozen composition is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the size (Z average ) (and/or size distribution and/or PDI) of the LNPs after thawing the frozen composition is equal to the size (Z average ) (and/or size distribution and/or PDI) of the LNPs before freezing.
  • the size (Z average ) of the LNPs after thawing the frozen composition is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the PDI of the LNPs after thawing the frozen composition is less than 0.3 (preferably less than 0.2, more preferably less than 0.1).
  • the composition is in liquid form.
  • the RNA integrity of the liquid composition when stored, e.g., at 0°C or higher for at least one week, is sufficient to produce the desired effect, e.g., to induce an immune response.
  • the RNA integrity of the liquid composition when stored, e.g., at 0°C or higher for at least one week, may be at least 50%, such as at least 52%, at least 54%, at least 55%, at least 56%, at least 58%, or at least 60%.
  • the size (Z average ) (and/or size distribution and/or polydispersity index (PDI)) of the LNPs of the liquid composition, when stored, e.g., at 0°C or higher for at least one week, is sufficient to produce the desired effect, e.g., to induce an immune response.
  • the size (Z average ) (and/or size distribution and/or polydispersity index (PDI)) of the LNPs of the liquid composition, when stored, e.g., at 0°C or higher for at least one week is equal to the size (Z aV erage) (and/or size distribution and/or PDI) of the LNPs of the initial composition, i.e., before storage.
  • the size (Zaverage) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm.
  • the PDI of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is less than 0.3, preferably less than 0.2, more preferably less than 0.1.
  • the size (Z average ) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the size (Z average ) (and/or size distribution and/or PDI) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is equal to the size (Zaverage) (and/or size distribution and/or PDI) of the LNPs before storage.
  • the size (Zaverage) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the PDI of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is less than 0.3 (preferably less than 0.2, more preferably less than 0.1).
  • the present disclosure provides a method of preparing a composition comprising LNPs dispersed in a final aqueous phase, wherein the LNPs comprise a cationically ionizable lipid and RNA;
  • the final aqueous phase comprises a buffer system comprising a final buffer substance and a final monovalent anion, the final buffer substance being selected from the group consisting of Tris and its protonated form, Bis-Tris-methane and its protonated form, and TEA and its protonated form, and the final monovalent anion being selected from the group consisting of chloride, acetate, glycolate, lactate, the anion of MES, the anion of MOPS, and the anion of HEPES;
  • the concentration of the final buffer substance in the composition is at most about 25 mM;
  • the final aqueous phase is substantially free of inorganic phosphate anions, substantially free of citrate anions, and substantially free of anions of EDTA; wherein the method comprises: (I)
  • step (P) optionally freezing the formulation to about -10°C or below, thereby obtaining the composition, wherein step (I) comprises:
  • the present application demonstrates that, surprisingly, by simply lowering the concentration of the buffer substance in a composition comprising LNPs and a buffer system, wherein the LNPs comprise a cationically ionizable lipid and RNA, it is possible to obtain an LNP RNA composition having improved RNA integrity after a freeze/thaw cycle compared to a composition comprising the same buffer substance in a concentration of 50 mM.
  • the composition prepared by the claimed method provides improved stability, can be stored in a temperature range compliant to regular technologies in pharmaceutical practice, and provides a ready-to-use preparation.
  • the final buffer substance is Tris and its protonated form, i.e., a mixture of Tris and its protonated form.
  • the final monovalent anion is selected from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 3-(N- morpholino)propanesulfonate, or from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 2-[4-(2-hydroxyethyl)piperazin-l-yl]ethanesulfonate, preferably from the group consisting of chloride, acetate, lactate, and morpholinoethanesulfonate, more preferably from the group consisting of chloride, acetate, and morpholinoethanesulfonate, or from the group consisting of chloride, acetate, and lactate, such as chloride or acetate.
  • the final buffer substance is Tris and its protonated form and the final monovalent anion is selected from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 3-(N-morpholino)propanesulfonate, or from the group consisting of chloride, acetate, glycolate, lactate, morpholinoethanesulfonate, and 2-[4-(2-hydroxyethyl)piperazin-l- yljethanesulfonate, preferably from the group consisting of chloride, acetate, lactate, and morpholinoethanesulfonate, more preferably from the group consisting of chloride, acetate, lactate, and morpholinoethanesulfonate, more preferably from the group consisting of chloride, acetate, and morpholinoethanesulfonate, such as chloride or acetate
  • the method of the second aspect comprises (II) freezing the formulation to about -10°C or below.
  • conducting the method of the second aspect results in a composition in frozen form.
  • the method of the second aspect does not comprises step (II).
  • conducting the method of the second aspect results in a composition in liquid form.
  • step (I) further comprises one or more steps selected from diluting and filtrating, such as tangential flow filtrating and diafiltrating, after step (c).
  • a diluting step may comprise adding a dilution solution to an intermediate formulation.
  • dilution solution may comprise one or more additional compounds and optionally the final buffer system, wherein the one or more additional compounds may comprise a cryoprotectant.
  • the one or more filtrating steps may be used to remove unwanted compounds (e.g., ethanol and/or one or more di- and/or polybasic organic acids) from the intermediate formulation and/or for increasing the RNA concentration of the intermediate formulation and/or for changing the pH and/or the buffer system of the intermediate formulation.
  • unwanted compounds e.g., ethanol and/or one or more di- and/or polybasic organic acids
  • an aqueous buffer solution can be used, which does not contain the unwanted compounds (such that the unwanted compounds are washed out from the intermediate formulation and into the aqueous buffer solution) and/or which is hypertonic compared to the aqueous buffer solution (such that water flows from the intermediate formulation to the aqueous buffer solution) and/or which has a pH and/or buffer system other than the pH and/or buffer system of the intermediate formulation.
  • step (I) comprises:
  • step (f ) optionally filtrating the first intermediate formulation prepared under (e') using a further aqueous buffer solution comprising a further buffer system, thereby preparing a further intermediate formulation comprising the LNPs dispersed in a further aqueous phase comprising the further buffer system, wherein the further aqueous buffer solution may be identical to or different from the first aqueous buffer solution; (g') optionally repeating step (f ) once or two or more times, wherein the further intermediate formulation comprising the LNPs dispersed in the further aqueous phase comprising the further buffer system obtained after step (f ) of one cycle is used as the first intermediate formulation of the next cycle, wherein in each cycle the further aqueous buffer solution may be identical to or different from the first aqueous buffer solution;
  • step (h') filtrating the first intermediate formulation obtained in step (e'), if step (f ) is absent, or the further intermediate formulation obtained in step (f ), if step (f) is present and step (g') is not present, or the further intermediate formulation obtained after step (g ' ), if steps (f) and (g') are present, using a final aqueous buffer solution comprising the final buffer system and having a pH of at least 6.0; and (i') optionally diluting the formulation obtained in step (h') with a dilution solution; thereby preparing the formulation comprising the LNPs dispersed in the final aqueous phase.
  • the concentration of the final buffer substance, in particular the total concentration of Tris and its protonated form, in the composition is at most about 20 mM, such as at most about 19 mM, at most about 18 mM, at most about 17 mM, at most about 16 mM, at most about 15 mM, at most about 14 mM, at most about 13 mM, at most about 12 mM, at most about 11 mM, or at most about 10 mM.
  • the lower limit of the final buffer substance, in particular Tris and its protonated form, in the composition is at least about 1 mM, preferably at least about 2 mM, such as at least about 3 mM, at least about 4 mM, at least about 5 mM, at least about 6 mM, at least about 7 mM, at least about 8 mM, or at least about 9 mM.
  • the concentration of the final buffer substance, in particular the total concentration of Tris and its protonated form, in the composition may be between about 1 mM and about 20 mM, such as between about 2 mM and about 15 mM, between about 5 mM and about 14 mM, between about 7 mM and about 13 mM, between about 8 mM and about 12 mM, between about 9 mM and about 11 mM, such as about 10 mM.
  • the final aqueous phase is substantially free of inorganic sulfate anions and/or carbonate anions and/or dibasic organic acid anions and/or polybasic organic acid anions.
  • at least one of these criteria applies.
  • the final aqueous phase is substantially free of inorganic sulfate anions.
  • the final aqueous phase is substantially free of carbonate anions.
  • the final aqueous phase is substantially free of dibasic organic acid anions.
  • the final aqueous phase is substantially free of polybasic organic acid anions.
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of carbonate anions.
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of dibasic organic acid anions.
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of polybasic organic acid anions.
  • the final aqueous phase is substantially free of carbonate anions and substantially free of dibasic organic acid anions. In a further embodiment of this second subgroup of the second aspect, the final aqueous phase is substantially free of carbonate anions and substantially free of polybasic organic acid anions. In a further embodiment of this second subgroup of the second aspect, the final aqueous phase is substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of dibasic organic acid anions.
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of polybasic organic acid anions.
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the final aqueous phase is substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions.
  • the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant.
  • the formulation obtained in step (I) and/or the composition is substantially free of a cryoprotectant.
  • these embodiments are the following:
  • the final aqueous phase is substantially free of inorganic sulfate anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of dibasic organic acid anions, the formulation obtained in step (I) and/or the composition and comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of carbonate anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of dibasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition comprise(s) a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of dibasic organic acid anions, and the formulation obtained in step (1) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of carbonate anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of dibasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of dibasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant;
  • the final aqueous phase is substantially free of inorganic sulfate anions, substantially free of carbonate anions, substantially free of dibasic organic acid anions and substantially free of polybasic organic acid anions, and the formulation obtained in step (I) and/or the composition is/are substantially free of a cryoprotectant.
  • cryoprotectant comprises one or more compounds selected from the group consisting of carbohydrates and sugar alcohols.
  • the cryoprotectant may be selected from the group consisting of sucrose, glucose, glycerol, sorbitol, and a combination thereof.
  • the formulation obtained in step (I) and/or the composition comprise(s) sucrose and/or glycerol as cryoprotectant.
  • the concentration of the cryoprotectant in the formulation and/or composition is at least 1% w/v, such as at least 2% w/v, at least 3% w/v, at least 4% w/v, at least 5% w/v, at least 6% w/v, at least 7% w/v, at least 8% w/v or at least 9% w/v.
  • the concentration of the cryoprotectant in the formulation and/or composition is up to 25% w/v, such as up to 20% w/v, up to 19% w/v, up to 18% w/v, up to 17% w/v, up to 16% w/v, up to 15% w/v, up to 14% w/v, up to 13% w/v, up to 12% w/v, or up to 11% w/v.
  • the concentration of the cryoprotectant in the formulation and/or composition is 1% w/v to 20% w/v, such as 2% w/v to 19% w/v, 3% w/v to 18% w/v, 4% w/v to 17% w/v, 5% w/v to 16% w/v, 5% w/v to 15% w/v, 6% w/v to 14% w/v, 7% w/v to 13% w/v, 8% w/v to 12% w/v, 9% w/v to 11 % w/v, or about 10% w/v.
  • the formulation and/or composition comprise(s) a cryoprotectant (in particular, sucrose and/or glycerol) in a concentration of from 5% w/v to 15% w/v, such as from 6% w/v to 14% w/v, from 7% w/v to 13% w/v, from 8% w/v to 12% w/v, or from 9% w/v to 11% w/v, or in a concentration of about 10% w/v.
  • a cryoprotectant in particular, sucrose and/or glycerol
  • the method of the second aspect may comprise a diluting step using a dilution solution, wherein the dilution solution comprises a sufficient amount of a cryoprotectant in order to achieve the above concentrations of cryoprotectant in the formulation obtained in step (I) and/or the composition.
  • the cryoprotectant is present in a concentration resulting in an osmolality of the composition in the range of from about 50 x 10 -3 osmol/kg to about 400 x 10 -3 osmol/kg (such as from about 50 x 10 -3 osmol/kg to about 390 x 10 -3 osmol/kg, from about 60 x 10 3 osmol/kg to about 380 x 10 '3 osmol/kg, from about 70 x 10 -3 osmol/kg to about 370 x 10 ’ ’ osmol/kg, from about 80 x 10 ‘3 osmol/kg to about 360 x 10 ⁇ 3 osmol/kg, from about 90
  • the method of the second aspect may comprise a diluting step using a dilution solution, wherein the dilution solution comprises a sufficient amount of a cryoprotectant in order to achieve the above osmolality values in the formulation obtained in step (I) and/or the composition.
  • the final monovalent anion is selected from the group consisting of chloride, acetate, glycolate, and lactate, and the concentration of the final monovalent anion (in particular the total concentration of all final monovalent anions) in the composition is at most equal to the concentration of the final buffer substance in the composition.
  • the concentration of the final monovalent anion (in particular the total concentration of all final monovalent anions) in the composition may be less than the concentration of the final buffer substance in the composition.
  • the concentration of the final buffer substance, in particular Tris and its protonated form, in the composition is at most about 20 mM
  • the concentration of the final monovalent anion (in particular the total concentration of all final monovalent anions) in the composition is at most equal to about 20 mM, e.g., less than 20 mM.
  • the concentration of the monovalent anion, such as chloride and/or acetate (in particular the total concentration of all monovalent anions) in the composition may be less than about 15 mM, such as less than about 14 mM, less than about 13 mM, less than about 12 mM, less than about 11 mM, less than about 10 mM, less than about 9 mM, less than about 8 mM, less than about 7 mM, less than about 6 mM, or less than about 5 mM.
  • the chloride concentration in the composition is as defined above (e.g., less than about 15 mM, etc.) and the composition does not comprise acetate.
  • the acetate concentration in the composition is as defined above (e.g., less than about 15 mM, etc.) and the composition does not comprise chloride.
  • the sodium concentration in the aqueous phase and/or composition is less than 20 mM, such as less than about 15 mM, e.g., less than about 14 mM, less than about 13 mM, less than about 12 mM, less than about 11 mM, less than about 10 mM, less than about 9 mM, less than about 8 mM, less than about 7 mM, less than about 6 mM, or less than about 5 mM.
  • the final monovalent anion is selected from the group consisting of the anions of MES, MOPS and HEPES, and the concentration of the final monovalent anion (in particular the total concentration of all final monovalent anions) in the composition is at least equal to the concentration of the final buffer substance in the composition.
  • the concentration of the final monovalent anion (in particular the total concentration of all final monovalent anions) in the composition may be higher than the concentration of the final buffer substance in the composition.
  • the concentration of the final buffer substance, in particular Tris and its protonated form, in the composition is at most about 20 mM
  • the concentration of the final monovalent anion (in particular the total concentration of all final monovalent anions) in the composition is at least equal to about 20 mM, e.g., higher than 20 mM.
  • the concentration of the final monovalent anion (in particular the total concentration of all final monovalent anions) in the composition may be higher than about 20 mM, such as higher than about 21 mM, higher than about 22 mM, higher than about 23 mM, higher than about 24 mM, higher than about 25 mM, higher than about 26 mM, higher than about 27 mM, higher than about 28 mM, higher than about 29 mM, or higher than about 30 mM, and preferably at most 50 mM, such as at most 45 mM, at most 40 mM or at most 35 mM.
  • the pH of the final buffer system (and the pH of the composition) is between about 6.5 and about 8.0.
  • the pH of the composition may be between about 6.9 and about 7.9, such as between about 7.0 and about 7.9, between about 7.1 and about 7.8, between about 7.2 and about 7.7, between about 7.3 and about 7.6, between about 7.4 and about 7.6, or about 7.5.
  • the first buffer system (and the pH of the RNA solution obtained in step (a)) has a pH of below 6.0, preferably at most about 5.5, such as at most about 5.0, at most about 4.9, at most about 4.8, at most about 4.7, at most about 4.6, or at most about 4.5.
  • the pH of first buffer system (and the pH of the RNA solution obtained in step (a)) may be between about 3.5 and about 5.9, such as between about 4.0 and about 5.5, or between about 4.5 and about 5.0.
  • the RNA solution obtained in step (a) may further comprises one or more di- and/or polybasic organic acids (e.g., citrate anions and/or anions of EDTA).
  • step (d) is conducted under conditions which remove the one or more di- and/or polybasic organic acids resulting in the formulation comprising the LNPs dispersed in final aqueous phase with the final aqueous phase being substantially free of the one or more di- and/or polybasic organic acids.
  • such conditions can include subjecting the intermediate formulation comprising the LNPs dispersed in the intermediate aqueous phase obtained in step (c) to at least one step of filtrating, such as tangential flow filtrating or diafiltrating, using a final buffer solution comprising the final buffer system (i.e., the final buffer substance and the final monovalent anion), wherein the final buffer solution does not contain the one or more di- and/or polybasic organic acids (and preferably does not contain ethanol).
  • a final buffer solution comprising the final buffer system (i.e., the final buffer substance and the final monovalent anion)
  • the final buffer solution does not contain the one or more di- and/or polybasic organic acids (and preferably does not contain ethanol).
  • such conditions can include (i) subjecting the intermediate formulation comprising the LNPs dispersed in the intermediate aqueous phase obtained in step (c) (i.e., a first intermediate formulation) to at least one step of filtrating, such as tangential flow filtrating or diafiltrating, using a further aqueous buffer solution comprising a further buffer system, thereby preparing a further intermediate formulation comprising the LNPs dispersed in a further aqueous phase comprising the further buffer system, wherein the further buffer system of the further aqueous buffer solution may be identical to or different from the buffer system used in step (a); (ii) optionally repeating step (i) once or two or more times, wherein the further intermediate formulation comprising the LNPs dispersed in the further aqueous phase obtained after step (i) of one cycle is used as the first intermediate formulation of the next cycle, wherein in each cycle the further buffer system of the further aqueous buffer solution may be identical to or different from the first buffer system used in step (a);
  • step (I) comprises steps (a ' ) to (e ' ) and (h ' ) (and optionally one or more of steps (f), (g') and (i'))
  • the first aqueous buffer solution has a pH of below 6.0, preferably at most about 5.5, such as at most about 5.0, at most about 4.9, at most about 4.8, at most about 4.7, at most about 4.6, or at most about 4.5.
  • the pH of the first aqueous buffer solution (and the pH of the RNA solution obtained under step (c 1 )) may be between about 3.5 and about 5.9, such as between about 4.0 and about 5.5, or between about 4.5 and about 5.0.
  • the first aqueous buffer solution provided under (b') (and the first aqueous phase) may further comprises one or more di- and/or polybasic organic acids (e.g., citrate anions and/or anions of EDTA).
  • steps (f ) to (h') is conducted under conditions which remove the one or more di- and/or polybasic organic acids from the first intermediate formulation and/or from the further intermediate formulation resulting in a further inter formulation comprising the LNPs dispersed in a further aqueous phase or in the final aqueous phase with the further and/or final aqueous phase being substantially free of the one or more di- and/or polybasic organic acids.
  • such conditions can include using a further aqueous buffer solution and/or a final buffer solution, wherein at least one of the further aqueous buffer solution(s) and the final buffer solution (preferably all of the further aqueous buffer solution(s) and the final buffer solution) does not contain the one or more di- and/or polybasic organic acids (and preferably does not contain ethanol).
  • the filtrating steps can be tangential flow filtrating or diafiltrating, preferably tangential flow filtrating.
  • the first buffer system used in step (a) comprises the final buffer substance and the final monovalent anion used in step (d), preferably the buffer system and pH of the first buffer system used in step (a) are identical to the buffer system and pH of the final aqueous buffer solution used in step (d). For example, only one aqueous buffer solution is used in this embodiment of the second aspect.
  • step (I) comprises steps (a ' ) to (e ' ) and (h') (and optionally one or more of steps (f), (g') and (i ' )), each of the first buffer system and every further buffer system used in steps (b ' ), (f ) and (g') comprises the final buffer substance and the final monovalent anion used in step (h'), preferably the buffer system and pH of each of the first aqueous buffer solution and of every further aqueous buffer solution used in steps (b'), (f) and (g ' ) are identical to the buffer system and pH of the final aqueous buffer solution.
  • the formulation and/or composition comprise(s) water as the main component and/or the total amount of solvent(s) other than water contained in the composition is less than about 1.0% (v/v).
  • the amount of water contained in the formulation and/or composition may be at least 50% (w/w), such as at least at least 55% (w/w), at least 60% (w/w), at least 65% (w/w), at least 70% (w/w), at least 75% (w/w), at least 80% (w/w), at least 85% (w/w), at least 90% (w/w), or at least 95% (w/w).
  • the amount of water contained in the formulation and/or composition comprise(s) may be at least 50% (w/w), such as at least at least 55% (w/w), at least 60% (w/w), at least 65% (w/w), at least 70% (w/w), at least 75% (w/w), at least 80% (w/w), at least 85% (w/w), or at least 90% (w/w). If the formulation and/or composition is/are substantially free of a cryoprotectant, the amount of water contained in the formulation and/or composition may be at least 95% (w/w).
  • the total amount of solvent(s) other than water contained in the composition may be less than about 1.0% (v/v), such as less than about 0.9% (v/v), less than about 0.8% (v/v), less than about 0.7% (v/v), less than about 0.6% (v/v), less than about 0.5% (v/v), less than about 0.4% (v/v), less than about 0.3% (v/v), less than about 0.2% (v/v), less than about 0.1% (v/v), less than about 0.05% (v/v), or less than about 0.01% (v/v).
  • a cryoprotectant which is liquid under normal conditions will not be considered as a solvent other than water but as cryoprotectant.
  • the above optional limitation that the total amount of solvent(s) other than water contained in the composition may be less than about 1.0% (v/v) does not apply to cryoprotectants which are liquids under normal conditions.
  • the osmolality of the composition is at most about 400 x 10 '3 osmol/kg, such as at most about 390 x 10 -3 osmol/kg, at most about 380 x 10 -3 osmol/kg, at most about 370 x 10 4 osmol/kg, at most about 360 x 10 -3 osmol/kg, at most about 350 x 10 -3 osmol/kg, at most about 340 x 10 -3 osmol/kg, at most about 330 x 10 -3 osmol/kg, at most about 320 x 10 '3 osmol/kg, at most about 310 x 10 -3 osmol/kg, or at most about 300 x 10 -3 osmol/kg.
  • the osmolality of the composition may be below 300 x 10 -3 osmol/kg, such as at most about 250 x 10 ⁇ 3 osmol/kg, at most about 200 x 10 -3 osmol/kg, at most about 150 x 10 -3 osmol/kg, at most about 100 x 10 -3 osmol/kg, at most about 50 x 10 -3 osmol/kg, at most about 40 x 10 -3 osmol/kg, or at most about 30 x 10 -3 osmol/kg.
  • the composition comprises a cryoprotectant, it is preferred that the main part of the osmolality of the composition is provided by the cryoprotectant.
  • the cryoprotectant may provide at least 50%, such as at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, or at least 90%, of the osmolality of the composition.
  • the concentration of the RNA in the composition is about 5 mg/1 to about 150 mg/1.
  • the concentration of the RNA in the composition may be about 10 mg/1 to about 140 mg/1, such as about 20 mg/1 to about 130 mg/1, about 25 mg/1 to about 125 mg/1, about 30 mg/1 to about 120 mg/1, about 35 mg/1 to about 115 mg/1, about 40 mg/1 to about 110 mg/1, about 45 mg/1 to about 105 mg/1, or about 50 mg/1 to about 100 mg/1.
  • the final buffer substance is Tris and its protonated form
  • the pH of the composition is between about 6.5 and about 8.0
  • the concentration of the RNA in the composition is about 5 mg/1 to about 150 mg/1.
  • it is preferred that the pH of the composition is between about 6.9 and about 7.9 and the concentration of the RNA in the composition is about 25 mg/1 to about 125 mg/1, such as about 30 mg/1 to about 120 mg/1.
  • the buffer substance is Tris and its protonated form; the pH of the composition is between about 6.9 and about 7.9; the concentration of the RNA in the composition is about 25 mg/1 to about 125 mg/1, such as about 30 mg/1 to about 120 mg/1; the final aqueous phase is substantially free of sulfate anions, substantially free of dibasic organic acids and substantially free of polybasic organic acids; and the composition comprises a cryoprotectant.
  • the buffer substance is Tris and its protonated form; the pH of the composition is between about 6.9 and about 7.9; the concentration of the RNA in the composition is about 25 mg/1 to about 125 mg/1, such as about 30 mg/1 to about 120 mg/1; the final aqueous phase is substantially free of sulfate anions, substantially free of dibasic organic acids and substantially free of polybasic organic acids; and the composition is substantially free of a cryoprotectant.
  • the cationically ionizable lipid comprises a head group which includes at least one nitrogen atom which is capable of being protonated under physiological conditions.
  • the cationically ionizable lipid may have the structure of Formula (1): or a pharmaceutically acceptable salt, tautomer, prodrug or stereoisomer thereof, wherein L 1 , L 2 , G 1 , G 2 , G 3 , R 1 , R 2 , and R 3 are as defined herein.
  • the cationically ionizable lipid is selected from the following: structures 1-1 to 1-36 (shown herein); and/or structures A to F (shown herein) ; and/or N,N- dimethyl-2,3-dioleyloxypropylamine (DODMA), 1 ,2-dioleoyl-3-dimethylammonium-propane (DODAP), heptatriaconta-6,9,28,31 -tetraen-19-yl-4-(dimethylamino)butanoate (DLin-MC3-DMA), and 4-((di((9Z, 12Z)-octadeca-9, 12-dien-l -yl)amino)oxy)-N,N-dimethyl-4-oxobutan- 1 -amine (DPL- 14).
  • the cationically ionizable lipid is the lipid having the structure 1-3.
  • the ethanolic solution prepared in step (b) or (d ' ) further comprises one or more additional lipids and the LNPs further comprise the one or more additional lipids.
  • the one or more additional lipids are selected from the group consisting of polymer conjugated lipids, neutral lipids, steroids, and combinations thereof.
  • the one or more additional lipids comprise a polymer conjugated lipid (e.g ., a pegylated lipid or a polysarcosine-lipid conjugate or a conjugate of polysarcosine and a lipid-like material), a neutral lipid (e.g., DSPC), and a steroid (e.g., cholesterol), such that the LNPs comprise the cationically ionizable lipid as described herein, a polymer conjugated lipid (e.g., a pegylated lipid or a polysarcosine-lipid conjugate or a conjugate of polysarcosine and a lipid-like material), a neutral lipid (e.g., DSPC), and a steroid (e.g., cholesterol).
  • a polymer conjugated lipid e.g ., a pegylated lipid or a polysarcosine-lipid conjugate or a conjugate of polysarc
  • the polymer conjugated lipid is a pegylated lipid.
  • the pegylated lipid may have the following structure: or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof, wherein R 12 , R 13 , and w are as defined herein.
  • the polymer conjugated lipid is a polysarcosine-lipid conjugate or a conjugate of polysarcosine and a lipid-like material.
  • the polysarcosine-lipid conjugate or conjugate of polysarcosine and a lipid-like material may be a member selected from the group consisting of a polysarcosine-diacylglycerol conjugate, a polysarcosine-dialkyloxypropyl conjugate, a polysarcosine-phospholipid conjugate, a polysarcosine-ceramide conjugate, and a mixture thereof.
  • the neutral lipid is a phospholipid.
  • phospholipid is preferably selected from the group consisting of phosphatidylcholines, phosphatidylethanolamines, phosphatidylglycerols, phosphatidic acids, phosphatidylserines and sphingomyelins.
  • phospholipids include distearoylphosphatidylcholine (DSPC), dioleoylphosphatidylcholine (DOPC), dimyristoylphosphatidylcholine (DMPC), dipentadecanoylphosphatidylcholine, dilauroylphosphatidylcholine, dipalmitoylphosphatidylcholine (DPPC), diarachidoylphosphatidylcholine (DAPC), dibehenoylphosphatidylcholine (DBPC), ditricosanoylphosphatidylcholine (DTPC), dilignoceroylphatidylcholine (DLPC), palmitoyloleoyl- phosphatidylcholine (POPC), l,2-di-0-octadecenyl-sn-glycero-3-phosphocholine (18:0 Diether PC), 1- oleoyl-2-cholesterylhemisuccinoyl
  • the steroid is a sterol such as cholesterol.
  • the ethanolic solution comprises the cationically ionizable lipid, the polymer conjugated lipid, the neutral lipid, and the steroid in a molar ratio of 20% to 60% of the cationically ionizable lipid, 0.5% to 15% of the polymer conjugated lipid, 5% to 25% of the neutral lipid, and 25% to 55% of the steroid, based on the total molar amount of lipids in the ethanolic solution.
  • the molar ratio may be 40% to 55% of the cationically ionizable lipid, 1 .0% to 10% of the polymer conjugated lipid, 5% to 15% of the neutral lipid, and 30% to 50% of the steroid, such as 45% to 55% of the cationically ionizable lipid, 1.0% to 5% of the polymer conjugated lipid, 8% to 12% of the neutral lipid, and 35% to 45% of the steroid, based on the total molar amount of lipids in the ethanolic solution.
  • the final aqueous phase does not comprise a chelating agent.
  • the LNPs comprise at least about 75% of the RNA comprised in the composition.
  • the LNPs may comprise at least about 76%, such as at least about 77%, at least about 78%, at least about 79%, at least about 80%, at least about 81%, at least about 82%, at least about 83%, at least about 84%, at least about 85%, at least about 86%, at least about 87%, at least about 88%, at least about 89%, at least about 90%, at least about 91%, at least about 92%, at least about 93%, at least about 94%, or at least about 95% of the RNA comprised in the composition.
  • the RNA (such as mRNA) is encapsulated within or associated with the LNPs.
  • the RNA (such as mRNA) comprises a modified nucleoside in place of uridine.
  • the modified nucleoside may be selected from pseudouridine (y), N 1 -methyl-pseudouridine (m 1 y), and 5 -methyl-uridine (m5U).
  • the RNA comprises one or more of the following (a) a 5’ cap, such as a capl or cap2 structure; (b) a 5’ UTR; (c) a 3’ UTR; and (d) a poly-A sequence, such as a poly-A sequence comprising at least 100 nucleotides, wherein the poly-A sequence preferably is an interrupted sequence of A nucleotides.
  • the RNA (such as mRNA) encodes one or more polypeptides.
  • the one or more polypeptides may comprise an epitope for inducing an immune response against an antigen in a subject.
  • the RNA (such as mRNA) comprises an open reading frame (ORF) encoding an amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof.
  • the RNA (such as mRNA) comprises an ORF encoding a full-length SARS-CoV2 S protein variant with proline residue substitutions at positions 986 and 987 of SEQ ID NO:l.
  • the SARS-CoV2 S protein variant may have at least 80% identity to SEQ ID NO:7.
  • the present disclosure provides a method of storing a composition, comprising preparing a composition according to the method of the second aspect and storing the composition at a temperature ranging from about -90°C to about -10°C, such as from about -90°C to about -40°C or from about -40°C to about -25°C or from about -25°C to about -10°C, or a temperature of about -20°C.
  • storing the frozen composition is for at least 1 week, such as at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 1 month, at least 2 months, at least 3 months, at least 6 months, at least 12 months, at least 24 months, or at least 36 months, preferably at least 4 weeks.
  • storing the frozen composition is for at least 4 weeks, preferably at least 1 month, more preferably at least 2 months, more preferably at least 3 months, more preferably at least 6 months at -20°C.
  • the composition can be stored at -70°C.
  • the method of storing a composition comprises preparing a composition according to the method of the second aspect comprising step (P) (i.e., freezing the formulation to about -10°C or below); storing the frozen composition at a temperature ranging from about -90°C to about -10°C for a certain period of time (e.g., at least one week); and storing the frozen composition a temperature ranging from about 0°C to about 20°C for a certain period of time (e.g., at least one week).
  • step (P) i.e., freezing the formulation to about -10°C or below
  • storing the frozen composition at a temperature ranging from about -90°C to about -10°C for a certain period of time e.g., at least one week
  • storing the frozen composition a temperature ranging from about 0°C to about 20°C for a certain period of time (e.g., at least one week).
  • any embodiment described herein in the context of the first or second aspect may also apply to any embodiment of the third aspect.
  • the present disclosure provides a method of storing a composition, comprising preparing a liquid composition according to the method of the second aspect and storing the liquid composition at a temperature ranging from about 0°C to about 20°C, such as from about 1°C to about 15°C, from about 2°C to about 10°C, or from about 2°C to about 8°C, or at a temperature of about 5°C.
  • storing the liquid composition is for at least 1 week, such as at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 1 month, at least 2 months, at least 3 months, or at least 6 months, preferably at least 4 weeks.
  • storing the liquid composition is for at least 4 weeks, preferably at least 1 month, more preferably at least 2 months, more preferably at least 3 months, more preferably at least 6 months at 5°C.
  • the method of storing a composition comprises preparing a composition according to the method of the second aspect comprising step (II) (i.e., freezing the formulation to about -10°C or below); and storing the frozen composition at a temperature ranging from about 0°C to about 20°C for a certain period of time (e.g., at least one week).
  • any embodiment described herein in the context of the first, second or third aspect may also apply to any embodiment of the fourth aspect.
  • the present disclosure provides a composition preparable by the method of the second, third or fourth aspect.
  • the composition can be in frozen form which, preferably, can be stored at a temperature of about -90°C or higher, such as about -90°C to about -10°C.
  • the frozen composition of the fifth aspect can be stored at a temperature ranging from about -90°C to about -40°C or from about -40°C to about -25°C or from about -25°C to about - 10°C, or a temperature to about -20°.
  • the composition can be stored for at least 1 week, such as at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 1 month, at least 2 months, at least 3 months, at least 6 months, at least 12 months, at least 24 months, or at least 36 months, preferably at least 4 weeks.
  • the frozen composition can be stored for at least 4 weeks, preferably at least 1 month, more preferably at least 2 months, more preferably at least 3 months, more preferably at least 6 months at -20°C.
  • the RNA integrity after thawing the frozen composition is at least 50%, such as at least 52%, at least 54%, at least 55%, at least 56%, at least 58%, or at least 60%, e.g., after thawing the frozen composition which has been stored at -20°C.
  • the size (Z averagc ) (and/or size distribution and/or polydispersity index (PDI)) of the LNPs after thawing the frozen composition is equal to the size (Z aVerage ) (and/or size distribution and/or PDI) of the LNPs before the composition has been frozen.
  • the size (Z average ) of the LNPs after thawing the frozen composition is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm.
  • the PDI of the LNPs after thawing the frozen composition is less than 0.3, preferably less than 0.2, more preferably less than 0.1.
  • the size (Zaverage) of the LNPs after thawing the frozen composition is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the size (Z average ) (and/or size distribution and/or PDI) of the LNPs after thawing the frozen composition is equal to the size (Z average ) (and/or size distribution and/or PDI) of the LNPs before freezing.
  • the size (Z average ) of the LNPs after thawing the frozen composition is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the PDI of the LNPs after thawing the frozen composition is less than 0.3 (preferably less than 0.2, more preferably less than 0.1).
  • the composition is in liquid form.
  • the RNA integrity of the liquid composition when stored, e.g., at 0°C or higher for at least one week, is sufficient to produce the desired effect, e.g., to induce an immune response.
  • the RNA integrity of the liquid composition when stored, e.g., at 0°C or higher for at least one week, may be at least 50%, such as at least 52%, at least 54%, at least 55%, at least 56%, at least 58%, or at least 60%.
  • the size (Z average ) (and/or size distribution and/or polydispersity index (PDI)) of the LNPs of the liquid composition when stored, e.g., at 0°C or higher for at least one week, is sufficient to produce the desired effect, e.g., to induce an immune response.
  • the size (Z aVerage ) (and/or size distribution and/or polydispersity index (PDI)) of the LNPs of the liquid composition, when stored, e.g., at 0°C or higher for at least one week, is equal to the size (Zaverage) (and/or size distribution and/or PDI) of the LNPs of the initial composition, i.e., before storage.
  • the size (Z aVerage ) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm.
  • the PDI of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is less than 0.3, preferably less than 0.2, more preferably less than 0.1.
  • the size (Z average ) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the size (Z average ) (and/or size distribution and/or PDI) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is equal to the size (Z aVerage ) (and/or size distribution and/or PDI) of the LNPs before storage.
  • the size (Z aVerage ) of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is between about 50 nm and about 500 nm, preferably between about 40 nm and about 200 nm, more preferably between about 40 nm and about 120 nm, and the PDI of the LNPs after storage of the liquid composition e.g., at 0°C or higher for at least one week is less than 0.3 (preferably less than 0.2, more preferably less than 0.1).
  • any embodiment described herein in the context of the first, second, third, or fourth aspect may also apply to any embodiment of the fifth aspect.
  • the present disclosure provides a method for preparing a ready-to-use pharmaceutical composition, the method comprising the steps of providing a frozen composition prepared by the method of the second or third aspect and thawing the frozen composition thereby obtaining the ready-to-use pharmaceutical composition.
  • any embodiment described herein in the context of the first, second, third, fourth, or fifth aspect may also apply to any embodiment of the sixth aspect.
  • the present disclosure provides a method for preparing a ready-to-use pharmaceutical composition, the method comprising the steps of providing a liquid composition prepared by the method of the second or fourth aspect thereby obtaining the ready-to-use pharmaceutical composition.
  • any embodiment described herein in the context of the first, second, third, fourth, fifth, or sixth aspect may also apply to any embodiment of the seventh aspect.
  • the present disclosure provides a ready-to-use pharmaceutical composition preparable by the method of the sixth or seventh aspect.
  • any embodiment described herein in the context of the first, second, third, fourth, fifth, sixth, or seventh aspect may also apply to any embodiment of the eighth aspect.
  • the present disclosure provides a composition of any one of the first, fifth, and eighth aspect for use in therapy.
  • the present disclosure provides a composition of any one of the first, fifth, and eighth aspect for use in inducing an immune response.
  • any embodiment described herein in the context of the first, second, third, fourth, fifth, sixth, seventh, eighth, or ninth aspect may also apply to any embodiment of the tenth aspect.
  • a composition comprising lipid nanoparticles (LNPs) dispersed in an aqueous phase, wherein the LNPs comprise a cationically ionizable lipid and RNA;
  • the aqueous phase comprises a buffer system comprising a buffer substance and a monovalent anion, the buffer substance being selected from the group consisting of tris(hydroxymethyl)aminomethane (Tris) and its protonated form, bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane (Bis-Tris-methane) and its protonated form, and triethanolamine (TEA) and its protonated form, and the monovalent anion being selected from the group consisting of chloride, acetate, glycolate, lactate, the anion of morpholinoethanesulfonic acid (MES), the anion of 3-(N-morpholino)propanesulfonic acid (MOPS), and the anion of 2-[4-(2-hydroxye
  • Tris tris(
  • composition of item 1 wherein the buffer substance is Tris and its protonated form.
  • composition of item 1 or 2 wherein the concentration of the buffer substance, in particular Tris and its protonated form, in the composition is at most about 20 mM, preferably at most about 15 mM, more preferably at most about 10 mM, such as about 10 mM.
  • composition of any one of items 1 to 3, wherein the aqueous phase is substantially free of inorganic sulfate anions and/or carbonate anions and/or dibasic organic acid anions and/or polybasic organic acid anions, in particular substantially free of inorganic sulfate anions, carbonate anions, dibasic organic acid anions and polybasic organic acid anions.
  • composition of any one of items 1 to 6, wherein the pH of the composition is between about 6.5 and about 8.0, preferably between about 6.9 and about 7.9, such as between about 7.0 and about 7.8.
  • water is the main component in the composition and/or the total amount of solvent(s) other than water contained in the composition is less than about 0.5% (v/v).
  • composition of any one of items 1 to 9, wherein the concentration of the RNA in the composition is about 5 mg/1 to about 150 mg/1, preferably about 10 mg/1 to about 130 mg/1, more preferably about 30 mg/1 to about 120 mg/1.
  • the cryoprotectant preferably comprises one or more compounds selected from the group consisting of carbohydrates and sugar alcohols, more preferably the cryoprotectant is selected from the group consisting of sucrose, glucose, glycerol, sorbitol, and a combination thereof, more preferably the cryoprotectant comprises sucrose and/or glycerol.
  • composition of any one of items 1 to 12, wherein the cationically ionizable lipid comprises a head group which includes at least one nitrogen atom which is capable of being protonated under physiological conditions.
  • G 3 is C 1 -C 24 alkylene, C 2 -C 24 alkenylene, C 3 -C 8 cydoalkylene, C 3 -C 8 cycloalkenylene;
  • R a is H or C 1 -C 12 alkyl
  • R 1 and R 2 are each independently C 6 -C 24 alkyl or C 6 -C 24 alkenyl
  • R 4 is C1-C12 alkyl
  • R 5 is H or C 1 -C 6 alkyl; and x is 0, 1 or 2.
  • the cationically ionizable lipid is selected from the structures 1-1 to 1-36 shown herein; or (b) the cationically ionizable lipid is selected from the structures A to F shown herein; or (g) the cationically ionizable lipid is the lipid having the structure 1-3 shown herein.
  • additional lipids preferably selected from the group consisting of polymer conjugated lipids, neutral lipids, steroids, and combinations thereof, more preferably the LNPs comprise the cationically ionizable lipid, a polymer conjugated lipid, a neutral lipid, and a steroid.
  • composition of item 16 wherein the polymer conjugated lipid comprises a pegylated lipid, wherein the pegylated lipid preferably has the following structure: or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof, wherein:
  • R 12 and R 13 are each independently a straight or branched, saturated or unsaturated alkyl chain containing from 10 to 30 carbon atoms, wherein the alkyl chain is optionally interrupted by one or more ester bonds; and w has a mean value ranging from 30 to 60.
  • the polymer conjugated lipid comprises a polysarcosine- lipid conjugate or a conjugate of polysarcosine and a lipid-like material
  • the polysarcosine-lipid conjugate or conjugate of polysarcosine and a lipid-like material preferably is a member selected from the group consisting of a polysarcosine-diacylglycerol conjugate, a polysarcosine-dialkyloxypropyl conjugate, a polysarcosine-phospholipid conjugate, a polysarcosine-ceramide conjugate, and a mixture thereof. 19.
  • DMPE dilauroyl-phosphatidylethanolamine
  • DPyPE diphytanoyl- phosphatidylethanolamine
  • RNA comprises at least one of the following, preferably all of the following: a 5 ’ cap; a 5 ’ UTR; a 3 ’ UTR; and a poly-A sequence.
  • the poly-A sequence comprises at least 100 A nucleotides, wherein the poly-A sequence preferably is an interrupted sequence of A nucleotides.
  • composition of item 25 or 26, wherein the 5’ cap is a capl or cap2 structure.
  • composition of item 28, wherein the RNA comprises an open reading frame (ORF) encoding an amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof.
  • ORF open reading frame
  • composition of item 28 or 29, wherein the RNA comprises an ORF encoding a full-length SARS-CoV2 S protein variant with proline residue substitutions at positions 986 and 987 of SEQ ID NO: 1.
  • composition of item 29 or 30, wherein the SARS-CoV2 S protein variant has at least 80% identity to SEQ ID NO: 7.
  • composition of any one of items 1 to 31 wherein the composition is in frozen form.
  • composition of item 32, wherein the RNA integrity after thawing the frozen composition is at least 50% compared to the RNA integrity before the composition has been frozen.
  • PDI polydispersity index
  • a method of preparing a composition comprising LNPs dispersed in a final aqueous phase, wherein the LNPs comprise a cationically ionizable lipid and RNA;
  • the final aqueous phase comprises a final buffer system comprising a final buffer substance and a final monovalent anion, the final buffer substance being selected from the group consisting of Tris and its protonated form, Bis-Tris-methane and its protonated form, and TEA and its protonated form, and the final monovalent anion being selected from the group consisting of chloride, acetate, glycolate, lactate, the anion of MES, the anion of MOPS, and the anion of HEPES;
  • the concentration of the final buffer substance in the composition is at most about 25 mM;
  • the final aqueous phase is substantially free of inorganic phosphate anions, substantially free of citrate anions, and substantially free of anions of EDTA; wherein the method comprises:
  • LNPs comprise the cationically ionizable lipid and RNA
  • step (P) optionally freezing the formulation to about -10°C or below, thereby obtaining the composition, wherein step (I) comprises:
  • step (I) further comprises one or more steps selected from diluting and filtrating.
  • step (I) comprises:
  • step (g-) optionally repeating step (f) once or two or more times, wherein the further intermediate formulation comprising the LNPs dispersed in the further aqueous phase comprising the further buffer system obtained after step (f) of one cycle is used as the first intermediate formulation of the next cycle, wherein in each cycle the further aqueous buffer solution may be identical to or different from the first aqueous buffer solution;
  • step (h') filtrating the first intermediate formulation obtained in step (e'), if step (f ) is absent, or the further intermediate formulation obtained in step (f), if step (f) is present and step (g') is not present, or the further intermediate formulation obtained after step (g-), if steps (f ) and (g-) are present, using a final aqueous buffer solution comprising the final buffer system and having a pH of at least 6.0; and
  • step (i') optionally diluting the formulation obtained in step (h-) with a dilution solution; thereby preparing the formulation comprising the LNPs dispersed in the final aqueous phase.
  • concentration of the final buffer substance, in particular Tris and its protonated form, in the composition is at most about 20 mM, preferably at most about 15 mM, more preferably at most about 10 mM, such as about 10 mM.
  • step (d) is conducted under conditions which remove the one or more di- and/or polybasic organic acid anions resulting in the formulation comprising the LNPs dispersed in the final aqueous phase with the final aqueous phase being substantially free of the one or more di- and/or polybasic organic acid anions present in the RNA solution prepared in step (a); or (ii) the first aqueous buffer solution and the first aqueous phase comprise one or more di- and/or polybasic organic acid anions and least one of steps (f) to (h ' ) is conducted under conditions which remove the one or more di- and/or polybasic organic acid anions from the first intermediate formulation and/or from the further intermediate formulation.
  • RNA solution obtained in step (a) has a pH of below 6.0, preferably at most about 5.0, more preferably at most about 4.5; or (ii) the first aqueous buffer solution has a pH of below 6.0, preferably at most about 5.0, more preferably at most about 4.5.
  • the one or more di- and/or polybasic organic acid anions comprise citrate anions and/or anions of EDTA.
  • the first buffer system used in step (a) comprises the final buffer substance and the final monovalent anion used in step (d), preferably the buffer system and pH of the first buffer system used in step (a) are identical to the buffer system and pH of the final aqueous buffer solution used in step (d); or (ii) each of the first buffer system and every further buffer system used in steps (b'), (f ) and (g') comprises the final buffer substance and the final monovalent anion used in step (h'), preferably the buffer system and pH of each of the first aqueous buffer solution and of every further aqueous buffer solution used in steps (b'), (f) and (g') are identical to the buffer system and pH of the final aqueous buffer solution.
  • any one of items 36 to 47 wherein the final monovalent anion is selected from the group consisting of chloride, acetate, glycolate, and lactate, and the concentration of the final monovalent anion in the composition is at most equal to, preferably less than the concentration of the final buffer substance in the composition, such as less than about 9 mM.
  • the method of any one of items 36 to 49, wherein the pH of the composition is between about 6.5 and about 8.0, preferably between about 6.9 and about 7.9, such as between about 7.0 and about 7.8.
  • RNA in the composition is about 5 mg/1 to about 150 mg/1, preferably about 10 mg/1 to about 130 mg/1, more preferably about 30 mg/l to about 120 mg/1.
  • step (I) further comprises diluting the formulation prepared under (d) with a dilution solution, or step (i') is present, wherein the dilution solution comprises a cryoprotectant; and/or (ii) the formulation obtained in step (I) and the composition comprise a cryoprotectant, preferably in a concentration of at least about 1% w/v, wherein the cryoprotectant preferably comprises one or more selected from the group consisting of carbohydrates and sugar alcohols, more preferably the cryoprotectant is selected from the group consisting of sucrose, glucose, glycerol, sorbitol, and a combination thereof, more preferably the cryoprotectant comprises sucrose and/or glycerol.
  • step (I) The method of any one of items 36 to 53, wherein the formulation obtained in step (I) and the composition is substantially free of a cryoprotectant.
  • cationically ionizable lipid comprises a head group which includes at least one nitrogen atom which is capable of being protonated under physiological conditions.
  • G 3 is C 1 -C 24 alkylene, C 2 -C 24 alkenylene, C 3 -C 8 cycloalkylene, C 3 -C 8 cycloalkenylene;
  • R a is H or C 1 -C 12 alkyl
  • R 1 and R 2 are each independently C 6 -C 24 alkyl or C 6 -C 24 alkenyl
  • R 4 is C 1 -C 12 alkyl
  • R 5 is H or C 1 -C 6 alkyl; and x is 0, 1 or 2.
  • the cationically ionizable lipid is selected from the structures 1-1 to 1-36 shown herein; or (b) the cationically ionizable lipid is selected from the structures A to F shown herein; or (g) the cationically ionizable lipid is the lipid having the structure 1-3 shown herein.
  • any one of items 36 to 58 wherein the ethanolic solution prepared in step (b) or (d') further comprises one or more additional lipids and the LNPs further comprise the one or more additional lipids, wherein the one or more additional lipids are preferably selected from the group consisting of polymer conjugated lipids, neutral lipids, steroids, and combinations thereof, more preferably the one or more additional lipids comprise a polymer conjugated lipid, a neutral lipid, and a steroid.
  • the polymer conjugated lipid comprises a pegylated lipid, wherein the pegylated lipid preferably has the following structure: or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof, wherein:
  • R 12 and R 13 are each independently a straight or branched, saturated or unsaturated alkyl chain containing from 10 to 30 carbon atoms, wherein the alkyl chain is optionally interrupted by one or more ester bonds; and w has a mean value ranging from 30 to 60.
  • the polymer conjugated lipid comprises a polysarcosine-lipid conjugate or a conjugate of polysarcosine and a lipid-like material
  • the polysarcosine- lipid conjugate or conjugate of polysarcosine and a lipid-like material preferably is a member selected from the group consisting of a polysarcosine-diacylglycerol conjugate, a polysarcosine- dialkyloxypropyl conjugate, a polysarcosine-phospholipid conjugate, a polysarcosine-ceramide conjugate, and a mixture thereof.
  • the neutral lipid is a phospholipid, preferably selected from the group consisting of phosphatidylcholines, phosphatidylethanolamines, phosphatidylglycerols, phosphatidic acids, phosphatidylserines and sphingomyelins, more preferably selected from the group consisting of distearoylphosphatidylcholine (DSPC), dioleoylphosphatidylcholine (DOPC), dimyristoylphosphatidylcholine (DMPC), dipentadecanoylphosphatidylcholine, dilauroylphosphatidylcholine, dipalmitoylphosphatidylcholine (DPPC), diarachidoylphosphatidylcholine (DAPC), dibehenoylphosphatidylcholine (DBPC), ditricosanoylphosphatidylcholine (DTPC), dilig
  • DSPC distearoylphosphatidyl
  • RNA comprises at least one of the following, preferably all of the following: a 5’ cap; a 5’ UTR; a 3’ UTR; and a poly-A sequence.
  • the poly-A sequence comprises at least 100 A nucleotides, wherein the poly-A sequence preferably is an interrupted sequence of A nucleotides.
  • the method of any one of items 36 to 71 wherein the RNA encodes one or more polypeptides, wherein the one or more polypeptides preferably comprise an epitope for inducing an immune response against an antigen in a subject.
  • RNA comprises an open reading frame (ORF) encoding an amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof.
  • ORF open reading frame
  • the method of item 73 or 74, wherein the SARS-CoV2 S protein variant has at least 80% identity to SEQ ID NO: 7.
  • a method of storing a composition comprising preparing a composition according to the method of any one of items 36 to 75 and storing the composition at a temperature ranging from about -90°C to about -10°C, such as from about -90°C to about -40°C or from about -25°C to about -10°C.
  • composition for at least 1 week, such as at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 1 month, at least 2 months, at least 3 months, at least 6 months, at least 12 months, at least 24 months, or at least 36 months.
  • a method of storing a composition comprising preparing a composition according to the method of any one of items 36 to 78 and storing the composition at a temperature ranging from about 0°C to about 20°C, such as from about 1°C to about 15°C, from about 2°C to about 10°C, or from about 2°C to about 8°C, or at a temperature of about 5°C.
  • the method of item 79, wherein storing the composition is for at least 1 week, such as at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 1 month, at least 2 months, at least 3 months, or at least 6 months.
  • composition of item 82, wherein the RNA integrity after thawing the frozen composition is at least 50% compared to the RNA integrity of the composition before the composition has been frozen.
  • PDI polydispersity index
  • composition of item 81 which is in liquid form.
  • composition of item 85 wherein the RNA integrity after storage of the composition for at least 1 week is at least 50% compared to the RNA integrity before storage.
  • a method for preparing a ready-to-use pharmaceutical composition comprising the steps of providing a frozen composition prepared by the method of any one of items 36 to 75, 77, and 78, and thawing the frozen composition thereby obtaining the ready-to-use pharmaceutical composition.
  • a method for preparing a ready-to-use pharmaceutical composition comprising the step of providing a liquid composition prepared by the method of any one of items 36 to 39, 41 to 76, 79, and 80, thereby obtaining the ready-to-use pharmaceutical composition.
  • a ready-to-use pharmaceutical composition preparable by the method of item 88 or 89.
  • composition of any one of items 1 to 35, 81 to 87, and 90 for use in therapy is not limited to.
  • composition of any one of items 1 to 35, 81 to 87, and 90 for use in inducing an immune response in a subject is a composition of any one of items 1 to 35, 81 to 87, and 90 for use in inducing an immune response in a subject.
  • Figure 1 is a schematic of in vivo assay for BNT162b1 material.
  • RNA LNPs were prepared by the aqueous-ethanol mixing protocol using 20 mM Tris added to the organic phase. LNPs were generated in Tris:acetate pH 4, pH 5.5 or pH 6.8 and the resulting primary LNPs were split: one portion was subjected to dialysis against PBS (A); the other portion was subjected to dialysis against Tris:acetate pH 7.4 (B). For comparison, the organic phase did not receive Tris, LNP were generated in Na-acetate buffer pH 5.5 and the material was dialysed against Tris:acetate pH 7.4. All samples were stored for 50 h at room temperature.
  • Figure 3 shows the morphology of selected RNA LNP compositions. Vitrified samples were analyzed by cryo electron microscopy. For the d028 sample a 2.5x higher magnification was used.
  • Figure 4 shows mouse immunogenicity of RNA LNP compositions.
  • 1 ⁇ g of RNA LNP composition D028 (LNP A), D029 (LNP B) and D030 (LNP C) were injected i.m. into mice, a reference composition (ATM) and saline were used as controls.
  • ATM reference composition
  • SI protein left panels
  • generation of SI IgG right panels
  • All RNA LNP compositions have comparable bioactivity amongst each other and in relation to the reference composition.
  • Figure 5 shows the stability of the RNA LNP composition D028 (A) and of the RNA LNP compositions D029 (B) and D030 (C).
  • Squares room temperature, diamonds: 5° C, triangles: -20°C, circles -70°C.
  • Figure 6 shows the colloidal stability RNA LNP compositions having a buffer strength of 10 mM or 50 mM. Squares: room temperature, diamonds: 5° C, triangles: -20°C. Solid lines represent particle size and dotted lines represent PDI.
  • Figure 7 shows the stability of the RNA in relation to the strength of the Tris buffer. Results represent % of the RNA modality being present in samples after certain times and conditions.
  • RNA denotes the full-length RNA
  • LMS denotes the highly stable folded form of RNA
  • Frag denotes the RNA fragments of the sample.
  • composition (or formulation) comprises a cryoprotectant and in another preferred embodiment the cationically ionizable lipid has the structure I- 3, then in a further preferred embodiment the composition (or formulation) comprises a cryoprotectant and the cationically ionizable lipid having the structure 1-3.
  • the term "about” denotes an interval of accuracy that the person of ordinary skill will understand to still ensure the technical effect of the feature in question.
  • the term typically indicates deviation from the indicated numerical value by ⁇ 5%, ⁇ 4%, ⁇ 3%, ⁇ 2%, ⁇ 1%, ⁇ 0.9%, ⁇ 0.8%, ⁇ 0.7%, ⁇ 0.6%, ⁇ 0.5%, ⁇ 0.4%, ⁇ 0.3%, ⁇ 0.2%, ⁇ 0.1%, ⁇ 0.05%, and for example ⁇ 0.01%.
  • the specific such deviation for a numerical value for a given technical effect will depend on the nature of the technical effect. For example, a natural or biological technical effect may generally have a larger such deviation than one for a man-made or engineering technical effect.
  • Terms such as “increase” or “enhance” in one embodiment relate to an increase or enhancement by at least about 10%, at least about 20%, at least about 30%, at least about 40%, at least about 50%, at least about 80%, or at least about 100%.
  • Physiological pH refers to a pH of about 7.5.
  • physiological conditions refer to the conditions (in particular pH and temperature) in a living subject, in particular a human.
  • physiological conditions mean a physiological pH and/or a temperature of about 37°C.
  • % (w/v) refers to weight by volume percent, which is a unit of concentration measuring the amount of solute in grams (g) expressed as a percent of the total volume of solution in milliliters (ml).
  • % by weight or “% (w/w)” (or “% w/w”) refers to weight percent, which is a unit of concentration measuring the amount of a substance in grams (g) expressed as a percent of the total weight of the total composition in grams (g).
  • divalent inorganic ions in particular divalent inorganic cations, their concentration or effective concentration (presence of free ions) due to the presence of chelating agents is in one embodiment sufficiently low so as to prevent degradation of the RNA.
  • the concentration or effective concentration of divalent inorganic ions is below the catalytic level for hydrolysis of the phosphodiester bonds between RNA nucleotides.
  • the concentration of free divalent inorganic ions is 20 mM or less. In one embodiment, there are no or essentially no free divalent inorganic ions.
  • Oleality refers to the concentration of a particular solute expressed as the number of osmoles of solute per kilogram of solvent.
  • freeze relates to the solidification of a liquid, usually with the removal of heat.
  • aqueous phase as used herein in relation to a composition/formulation comprising particles, in particular LNPs, means the mobile or liquid phase, i.e., the continuous water phase including all components dissolved therein but (formally) excluding the particles.
  • particles such as LNPs
  • the aqueous phase is free of X is such manner as it is practically and realistically feasible, e.g., the concentration of compound X in the aqueous composition is less than 1% by weight.
  • the particles dispersed in the aqueous phase may comprise compound X in an amount of more than 1% by weight.
  • protonated form as used herein in relation with a base (e.g., an organic primary amine such as Tris) means the conjugate acid of the base, wherein the conjugate acid contains a proton which is removable by deprotonation resulting in the base.
  • a base e.g., an organic primary amine such as Tris
  • the protonated form of Tris has the formula [H 3 N(CH 2 CH 2 OH) 3 ] 1 .
  • buffer substance refers to a mixture of the base and its protonated form (e.g., a mixture of Tris and [H 3 N(CH 2 CH 2 0H) 3 ] + ). Consequently, the amount of a buffer substance contained in a composition is sum of the amounts of both the base and the conjugate acid in the composition.
  • recombinant in the context of the present disclosure means "made through genetic engineering". In one embodiment, a “recombinant object” in the context of the present disclosure is not occurring naturally.
  • naturally occurring refers to the fact that an object can be found in nature.
  • a peptide or nucleic acid that is present in an organism (including viruses) and can be isolated from a source in nature and which has not been intentionally modified by man in the laboratory is naturally occurring.
  • found in nature means "present in nature” and includes known objects as well as objects that have not yet been discovered and/or isolated from nature, but that may be discovered and/or isolated in the future from a natural source.
  • room temperature and “ambient temperature” are used interchangeably herein and refer to temperatures from at least about 15°C, preferably from about 15°C to about 35°C, from about 15°C to about 30°C, from about 15°C to about 25°C, or from about 17°C to about 22°C. Such temperatures will include 15°C, 16°C, 17°C, 18°C, 19°C, 20°C, 2PC and 22°C.
  • alkyl refers to a monoradical of a saturated straight or branched hydrocarbon.
  • the alkyl group comprises from 1 to 12 (such as 1 to 10) carbon atoms, i.e., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 carbon atoms, abbreviated as C 1-12 alkyl, (such as 1 , 2, 3, 4, 5, 6, 7, 8, 9, or 10 carbon atoms, abbreviated as C 1-10 alkyl), more preferably 1 to 8 carbon atoms, such as 1 to 6 or 1 to 4 carbon atoms.
  • Exemplary alkyl groups include methyl, ethyl, propyl, iso-propyl (also called 2-propyl or 1- methylethyl), butyl, iso-butyl, tert-butyl, n-pentyl, iso-pentyl, sec-pentyl, neo-pentyl, 1,2-dimethyl- propyl, iso-amyl, n-hexyl, iso-hexyl, sec-hexyl, n-heptyl, iso-heptyl, n-octyl, 2-ethyl-hexyl, n-nonyl, n- decyl, n-undecyl, n-dodecyl, and the like.
  • a “substituted alkyl” means that one or more (such as 1 to the maximum number of hydrogen atoms bound to an alkyl group, e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, or up to 10, such as between 1 to 5, 1 to 4, or 1 to 3, or 1 or 2) hydrogen atoms of the alkylene group are replaced with a substituent other than hydrogen (when more than one hydrogen atom is replaced the substituents may be the same or different).
  • the substituent other than hydrogen is a 1 st level substituent, as specified herein.
  • Examples of a substituted alkyl include chloromethyl, dichloromethyl, fluoromethyl, and difluoromethyl.
  • alkylene refers to a diradical of a saturated straight or branched hydrocarbon.
  • the alkylene comprises from 1 to 12 (such as 1 to 10) carbon atoms, i.e., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 carbon atoms (such as 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 carbon atoms), more preferably 1 to 8 carbon atoms, such as 1 to 6 or 1 to 4 carbon atoms.
  • alkylene groups include methylene, ethylene (i.e., 1,1-ethylene, 1,2-ethylene), propylene (i.e., 1,1 -propylene, 1,2-propylene (-CH(CH 3 )CH 2 -), 2,2- propylene (-C(CH 3 )2-), and 1,3-propylene), the butylene isomers (e.g., 1,1-butylene, 1,2-butylene, 2,2- butylene, 1,3-butylene, 2,3-butylene (cis or trans or a mixture thereof), 1,4-butylene, 1,1 -iso-butylene, 1,2-iso-butylene, and 1,3 -iso-butylene), the pentylene isomers (e.g., 1,1-pentylene, 1 ,2-pentylene, 1,3- pentylene, 1 ,4-pentylene, 1,5-pentylene, 1,1-iso-pentylene, 1,1 -sec-p
  • the straight alkylene moieties having at least 3 carbon atoms and a free valence at each end can also be designated as a multiple of methylene (e.g., 1,4-butylene can also be called tetramethylene).
  • 1,4-butylene can also be called tetramethylene.
  • the ending "ylene” instead of using the ending "ylene” for alkylene moieties as specified above, one can also use the ending "diyl” (e.g., 1 ,2-butylene can also be called butan-l,2-diyl).
  • a “substituted alkylene” means that one or more (such as 1 to the maximum number of hydrogen atoms bound to an alkylene group, e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, or up to 10, such as between 1 to 5, 1 to 4, or 1 to 3, or 1 or 2) hydrogen atoms of the alkylene group are replaced with a substituent other than hydrogen (when more than one hydrogen atom is replaced the substituents may be the same or different).
  • the substituent other than hydrogen is a 1 st level substituent, as specified herein.
  • alkenyl refers to a monoradical of an unsaturated straight or branched hydrocarbon having at least one carbon-carbon double bond.
  • the maximal number of carbon-carbon double bonds in the alkenyl group can be equal to the integer which is calculated by dividing the number of carbon atoms in the alkenyl group by 2 and, if the number of carbon atoms in the alkenyl group is uneven, rounding the result of the division down to the next integer.
  • the maximum number of carbon-carbon double bonds is 4.
  • the alkenyl group has 1 to 6 (such as 1 to 4), i.e., 1, 2, 3, 4, 5, or 6, carbon-carbon double bonds.
  • the alkenyl group comprises from 2 to 12 (such as 2 to 10) carbon atoms, i.e., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 carbon atoms (such as 2, 3, 4, 5, 6, 7, 8, 9, or 10 carbon atoms), more preferably 2 to 8 carbon atoms, such as 2 to 6 carbon atoms or 2 to 4 carbon atoms.
  • the alkenyl group comprises from 2 to 12, abbreviated as C2-12 alkenyl, (e.g., 2 to 10) carbon atoms and 1, 2, 3, 4, 5, or 6 (e.g., 1, 2, 3, 4, or 5) carbon-carbon double bonds, more preferably it comprises 2 to 8 carbon atoms and 1, 2, 3, or 4 carbon-carbon double bonds, such as 2 to 6 carbon atoms and 1, 2, or 3 carbon-carbon double bonds or 2 to 4 carbon atoms and 1 or 2 carbon-carbon double bonds.
  • the carbon-carbon double bond(s) may be in cis (Z) or trans (E) configuration.
  • alkenyl groups include vinyl, 1- propenyl, 2-propenyl (i.e., allyl), 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4- pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 1-heptenyl, 2-heptenyl, 3-heptenyl, 4- heptenyl, 5-heptenyl, 6-heptenyl, 1-octenyl, 2-octenyl, 3-octenyl, 4-octenyl, 5-octenyl, 6-octenyl, 7- octenyl, 1-nonenyl, 2-nonenyl, 3-nonenyl, 4-nonenyl, 5-nonenyl, 6-nonenyl, 7-nonenyl, 8-n
  • a "substituted alkenyl” means that one or more (such as 1 to the maximum number of hydrogen atoms bound to an alkenyl group, e.g., 1 , 2, 3, 4, 5, 6, 7, 8, 9, or up to 10, such as between 1 to 5, 1 to 4, or 1 to 3, or 1 or 2) hydrogen atoms of the alkenyl group are replaced with a substituent other than hydrogen (when more than one hydrogen atom is replaced the substituents may be the same or different).
  • the substituent other than hydrogen is a 1 st level substituent as specified herein.
  • alkenylene refers to a diradical of an unsaturated straight or branched hydrocarbon having at least one carbon-carbon double bond.
  • the maximal number of carbon-carbon double bonds in the alkenylene group can be equal to the integer which is calculated by dividing the number of carbon atoms in the alkenylene group by 2 and, if the number of carbon atoms in the alkenylene group is uneven, rounding the result of the division down to the next integer.
  • the maximum number of carbon-carbon double bonds is 4.
  • the alkenylene group has 1 to 6 (such as 1 to 4), i.e., 1, 2, 3, 4, 5, or 6, carbon-carbon double bonds.
  • the alkenylene group comprises from 2 to 12 (such as 2 to 10) carbon atoms, i.e., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 carbon atoms (such as 2, 3, 4, 5, 6, 7, 8, 9, or 10 carbon atoms), more preferably 2 to 8 carbon atoms, such as 2 to 6 carbon atoms or 2 to 4 carbon atoms.
  • the alkenylene group comprises from 2 to 12 (such as 2 to 10 carbon) atoms and 1, 2, 3, 4, 5, or 6 (such as 1 , 2, 3, 4, or 5) carbon-carbon double bonds, more preferably it comprises 2 to 8 carbon atoms and 1 , 2, 3, or 4 carbon-carbon double bonds, such as 2 to 6 carbon atoms and 1, 2, or 3 carbon-carbon double bonds or 2 to 4 carbon atoms and 1 or 2 carbon-carbon double bonds.
  • the carbon-carbon double bond(s) may be in cis (Z) or trans (E) configuration.
  • alkenylene groups include ethen-l ,2-diyl, vinylidene (also called ethenylidene), 1 -propen- 1,2-diyl, l-propen-l,3-diyl, 1 -propen-2,3 -diyl, allylidene, 1-buten- 1 ,2-diyl, 1-buten- 1,3 -diyl, l-buten-l,4-diyl, l-buten-2,3-diyl, l-buten-2,4-diyl, 1- buten-3,4-diyl, 2-buten- 1,2-diyl, 2-buten- 1,3 -diyl, 2-buten-l,4-diyl, 2-buten-2,3-diyl, 2-buten-2,4-diyl, 2-buten-3,4-diyl, and the like.
  • a "substituted alkenylene” means that one or more (such as 1 to the maximum number of hydrogen atoms bound to an alkenylene group, e.g., 1 , 2, 3, 4, 5, 6, 7, 8, 9, or up to 10, such as between 1 to 5, 1 to 4, or 1 to 3, or 1 or 2) hydrogen atoms of the alkenylene group are replaced with a substituent other than hydrogen (when more than one hydrogen atom is replaced the substituents may be the same or different).
  • the substituent other than hydrogen is a 1 st level substituent as specified herein.
  • eycloalkylene represents cyclic non-aromatic versions of "alkylene” and is a geminal, vicinal or isolated diradical.
  • the eycloalkylene (i) is monocyclic or polycyclic (such as bi- or tricyclic) and/or (ii) is 3- to 14-membered (i.e., 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, 12-, 13-, or 14- membered, such as 3- to 12-membered or 3- to 10-membered).
  • the eycloalkylene is a mono-, bi- or tricyclic 3- to 14-membered (i.e., 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, 12-, 13-, or 14- membered, such as 3- to 12-membered or 3- to 10-membered) eycloalkylene.
  • eycloalkylene groups include cyclohexylene, cycloheptylene, cyclopropylene, cyclobutylene, cyclopentylene, cyclooctylene, bicyclo[3.2. l]octylene, bicyclo[3.2.2]nonylene, and adamantanylene (e.g., tricyclo[3.3.1. l 37 ]decan-2,2- diyl).
  • a “substituted cycloalkylene” means that one or more (such as 1 to the maximum number of hydrogen atoms bound to an cycloalkylene group, e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, or up to 10, such as between 1 to 5, 1 to 4, or 1 to 3, or 1 or 2) hydrogen atoms of the alkylene group are replaced with a substituent other than hydrogen (when more than one hydrogen atom is replaced the substituents may be the same or different).
  • the substituent other than hydrogen is a 1 st level substituent as specified herein.
  • cycloalkenylene represents cyclic non-aromatic versions of “alkenylene” and is a geminal, vicinal or isolated diradical.
  • the maximal number of carbon-carbon double bonds in the cycloalkenylene group can be equal to the integer which is calculated by dividing the number of carbon atoms in the cycloalkenylene group by 2 and, if the number of carbon atoms in the cycloalkenylene group is uneven, rounding the result of the division down to the next integer. For example, for an cycloalkenylene group having 9 carbon atoms, the maximum number of carbon-carbon double bonds is 4.
  • the cycloalkenylene group has 1 to 6 (such as 1 to 4), i.e., 1, 2, 3, 4, 5, or 6, carbon-carbon double bonds.
  • the cycloalkenylene (i) is monocyclic or polycyclic (such as bi- or tricyclic) and/or (ii) is 3- to 14-membered (i.e., 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, 12-, 13-, or 14- membered, such as 3- to 12-membered or 3- to 10-membered).
  • the cycloalkenylene is a mono-, bi- or tricyclic 3- to 14-membered (i.e., 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, 12-, 13-, or 14- membered, such as 3- to 12-membered or 3- to 10-membered) cycloalkenylene.
  • exemplary cycloalkenylene groups include cyclohexenylene, cycloheptenylene, cyclopropenylene, cyclobutenylene, cyclopentenylene, and cyclooctenylene.
  • a “substituted cycloalkenylene” means that one or more (such as 1 to the maximum number of hydrogen atoms bound to an cycloalkenylene group, e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, or up to 10, such as between 1 to 5, 1 to 4, or 1 to 3, or 1 or 2) hydrogen atoms of the cycloalkenylene group are replaced with a substituent other than hydrogen (when more than one hydrogen atom is replaced the substituents may be the same or different).
  • the substituent other than hydrogen is a 1 st level substituent as specified herein.
  • aromatic as used in the context of hydrocarbons means that the whole molecule has to be aromatic.
  • a monocyclic aryl is hydrogenated (either partially or completely) the resulting hydrogenated cyclic structure is classified as cycloalkyl for the purposes of the present disclosure.
  • a bi- or polycyclic aryl such as naphthyl
  • the resulting hydrogenated bi- or polycyclic structure is classified as cycloalkyl for the purposes of the present disclosure (even if one ring, such as in 1,2-dihydronaphthyl, is still aromatic).
  • Particularly preferred 1 st level substituents are selected from the group consisting of methyl, ethyl, propyl, isopropyl, halogen (such as F, Cl, or Br), and -CF 3 , such as halogen (e.g., F, Cl, or Br), and -CF 3 .
  • after thawing the frozen composition means that the frozen composition has to be thawed before the characteristics (such as RNA integrity and/or size (Z average ) and/or size distribution and/or the PDI of the LNPs contained in the composition) can be measured.
  • a "monovalent” compound relates to a compound having only one functional group of interest.
  • a monovalent anion relates to a compound having only one negatively charged group, preferably under physiological conditions.
  • a “divalent” or “dibasic” compound relates to a compound having two functional groups of interest.
  • a dibasic organic acid has two acid groups.
  • a "polyvalent” or “polybasic” compound relates to a compound having three or more functional groups of interest.
  • a polybasic organic acid has three or more acid groups.
  • RNA integrity means the percentage of the full-length (i.e., non-fragmented) RNA to the total amount of RNA (i.e., non-fragmented plus fragmented RNA) contained in a sample.
  • the RNA integrity may be determined by chromatographically separating the RNA (e.g., using capillary electrophoresis), determining the peak area of the main RNA peak (i.e. , the peak area of the full-length (i.e., non-fragmented) RNA), determining the peak area of the total RNA, and dividing the peak area of the main RNA peak by the peak area of the total RNA.
  • cryoprotectant relates to a substance that is added to a preparation (e.g., formulation or composition) in order to protect the active ingredients of the preparation during the freezing stages.
  • peptide comprises oligo- and polypeptides and refers to substances which comprise about two or more, about 3 or more, about 4 or more, about 6 or more, about 8 or more, about 10 or more, about 13 or more, about 16 or more, about 20 or more, and up to about 50, about 100 or about 150, consecutive amino acids linked to one another via peptide bonds.
  • protein refers to large peptides, in particular peptides having at least about 151 amino acids, but the terms “peptide” and “protein” are used herein usually as synonyms.
  • a "therapeutic protein” has a positive or advantageous effect on a condition or disease state of a subject when provided to the subject in a therapeutically effective amount.
  • a therapeutic protein has curative or palliative properties and may be administered to ameliorate, relieve, alleviate, reverse, delay onset of or lessen the severity of one or more symptoms of a disease or disorder.
  • a therapeutic protein may have prophylactic properties and may be used to delay the onset of a disease or to lessen the severity of such disease or pathological condition.
  • therapeutic protein includes entire proteins or peptides, and can also refer to therapeutically active fragments thereof. It can also include therapeutically active variants of a protein. Examples of therapeutically active proteins include, but are not limited to, antigens for vaccination and immunostimulants such as cytokines.
  • RNA e.g., mRNA
  • the cell may express the encoded peptide or protein intracellularly ⁇ e.g. in the cytoplasm and/or in the nucleus), may secrete the encoded peptide or protein, or may express it on the surface.
  • nucleic acid expressing and “nucleic acid encoding” or similar terms are used interchangeably herein and with respect to a particular peptide or polypeptide mean that the nucleic acid, if present in the appropriate environment, preferably within a cell, can be expressed to produce said peptide or polypeptide.
  • portion refers to a fraction. With respect to a particular structure such as an amino acid sequence or protein the term “portion” thereof may designate a continuous or a discontinuous fraction of said structure.
  • part and fragment are used interchangeably herein and refer to a continuous element.
  • a part of a structure such as an amino acid sequence or protein refers to a continuous element of said structure.
  • the term “part” means a portion of the composition.
  • a part of a composition may any portion from 0.1% to 99.9% (such as 0.1%, 0.5%, 1%, 5%, 10%, 50%, 90%, or 99%) of said composition.
  • “Fragment” with reference to an amino acid sequence (peptide or protein), relates to a part of an amino acid sequence, i.e. a sequence which represents the amino acid sequence shortened at the N-terminus and/or C-terminus.
  • a fragment shortened at the C-terminus is obtainable, e.g., by translation of a truncated open reading frame that lacks the 3'-end of the open reading frame.
  • a fragment shortened at the N-terminus is obtainable, e.g., by translation of a truncated open reading frame that lacks the 5 '-end of the open reading frame, as long as the truncated open reading frame comprises a start codon that serves to initiate translation.
  • a fragment of an amino acid sequence comprises, e.g., at least 50%, at least 60%, at least 70%, at least 80%, at least 90% of the amino acid residues from an amino acid sequence.
  • a fragment of an amino acid sequence preferably comprises at least 6, in particular at least 8, at least 12, at least 15, at least 20, at least 30, at least 50, or at least 100 consecutive amino acids from an amino acid sequence.
  • a part or fragment of a peptide or protein preferably has at least one functional property of the peptide or protein from which it has been derived.
  • Such functional properties comprise a pharmacological activity, the interaction with other peptides or proteins, an enzymatic activity, the interaction with antibodies, and the selective binding of nucleic acids.
  • a pharmacological active fragment of a peptide or protein has at least one of the pharmacological activities of the peptide or protein from which the fragment has been derived.
  • a part or fragment of a peptide or protein preferably comprises a sequence of at least 6, in particular at least 8, at least 10, at least 12, at least 15, at least 20, at least 30 or at least 50, consecutive amino acids of the peptide or protein.
  • a part or fragment of a peptide or protein preferably comprises a sequence of up to 8, in particular up to 10, up to 12, up to 15, up to 20, up to 30 or up to 55, consecutive amino acids of the peptide or protein.
  • variant herein is meant an amino acid sequence that differs from a parent amino acid sequence by virtue of at least one amino acid modification.
  • the parent amino acid sequence may be a naturally occurring or wild type (WT) amino acid sequence, or may be a modified version of a wild type amino acid sequence.
  • WT wild type
  • the variant amino acid sequence has at least one amino acid modification compared to the parent amino acid sequence, e.g., from 1 to about 20 amino acid modifications, and preferably from 1 to about 10 or from 1 to about 5 amino acid modifications compared to the parent.
  • wild type or “WT” or “native” herein is meant an amino acid sequence that is found in nature, including allelic variations.
  • a wild type amino acid sequence, peptide or protein has an amino acid sequence that has not been intentionally modified.
  • variants of an amino acid sequence comprise amino acid insertion variants, amino acid addition variants, amino acid deletion variants and/or amino acid substitution variants.
  • variant includes all mutants, splice variants, posttranslationally modified variants, conformations, isoforms, allelic variants, species variants, and species homologs, in particular those which are naturally occurring.
  • variant includes, in particular, fragments of an amino acid sequence.
  • Amino acid insertion variants comprise insertions of single or two or more amino acids in a particular amino acid sequence.
  • amino acid sequence variants having an insertion one or more amino acid residues are inserted into a particular site in an amino acid sequence, although random insertion with appropriate screening of the resulting product is also possible.
  • Amino acid addition variants comprise amino- and/or carboxy-terminal fusions of one or more amino acids, such as 1, 2, 3, 5, 10, 20, 30, 50, or more amino acids.
  • Amino acid deletion variants are characterized by the removal of one or more amino acids from the sequence, such as by removal of 1, 2, 3, 5, 10, 20, 30, 50, or more amino acids. The deletions may be in any position of the protein.
  • Amino acid deletion variants that comprise the deletion at the N-terminal and/or C-terminal end of the protein are also called N-terminal and/or C- terminal truncation variants.
  • Amino acid substitution variants are characterized by at least one residue in the sequence being removed and another residue being inserted in its place. Preference is given to the modifications being in positions in the amino acid sequence which are not conserved between homologous proteins or peptides and/or to replacing amino acids with other ones having similar properties.
  • amino acid changes in peptide and protein variants are conservative amino acid changes, i.e., substitutions of similarly charged or uncharged amino acids.
  • a conservative amino acid change involves substitution of one of a family of amino acids which are related in their side chains.
  • Naturally occurring amino acids are generally divided into four families: acidic (aspartate, glutamate), basic (lysine, arginine, histidine), non-polar (alanine, valine, leucine, isoleucine, proline, phenylalanine, methionine, tryptophan), and uncharged polar (glycine, asparagine, glutamine, cysteine, serine, threonine, tyrosine) amino acids. Phenylalanine, tryptophan, and tyrosine are sometimes classified jointly as aromatic amino acids.
  • conservative amino acid substitutions include substitutions within the following groups:
  • the degree of similarity, preferably identity between a given amino acid sequence and an amino acid sequence which is a variant of said given amino acid sequence will be at least about 60%, 70%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99%.
  • the degree of similarity or identity is given preferably for an amino acid region which is at least about 10%, at least about 20%, at least about 30%, at least about 40%, at least about 50%, at least about 60%, at least about 70%, at least about 80%, at least about 90% or about 100% of the entire length of the reference amino acid sequence.
  • the degree of similarity or identity is given preferably for at least about 20, at least about 40, at least about 60, at least about 80, at least about 100, at least about 120, at least about 140, at least about 160, at least about 180, or about 200 amino acids, in some embodiments continuous amino acids.
  • the degree of similarity or identity is given for the entire length of the reference amino acid sequence.
  • the alignment for determining sequence similarity, preferably sequence identity can be done with art known tools, preferably using the best sequence alignment, for example, using Align, using standard settings, preferably EMBOSS::needle, Matrix: Blosum62, Gap Open 10.0, Gap Extend 0.5.
  • Sequence similarity indicates the percentage of amino acids that either are identical or that represent conservative amino acid substitutions.
  • Sequence identity between two amino acid sequences indicates the percentage of amino acids that are identical between the sequences.
  • Sequnce identity between two nucleic acid sequences indicates the percentage of nucleotides that are identical between the sequences.
  • % identical and % identity are intended to refer, in particular, to the percentage of nucleotides or amino acids which are identical in an optimal alignment between the sequences to be compared. Said percentage is purely statistical, and the differences between the two sequences may be but are not necessarily randomly distributed over the entire length of the sequences to be compared. Comparisons of two sequences are usually carried out by comparing the sequences, after optimal alignment, with respect to a segment or "window of comparison", in order to identify local regions of corresponding sequences. The optimal alignment for a comparison may be carried out manually or with the aid of the local homology algorithm by Smith and Waterman, 1981, Ads App. Math. 2, 482, with the aid of the local homology algorithm by Neddleman and Wunsch, 1970, J.
  • NCBI National Center for Biotechnology Information
  • the algorithm parameters used for BLASTN algorithm on the NCBI website include: (i) Expect Threshold set to 10; (ii) Word Size set to 28; (iii) Max matches in a query range set to 0; (iv) Match/Mismatch Scores set to 1, -2; (v) Gap Costs set to Linear; and (vi) the filter for low complexity regions being used.
  • the algorithm parameters used for BLASTP algorithm on the NCBI website include: (i) Expect Threshold set to 10; (ii) Word Size set to 3; (iii) Max matches in a query range set to 0; (iv) Matrix set to BLOSUM62; (v) Gap Costs set to Existence: 11 Extension: 1 ; and (vi) conditional compositional score matrix adjustment.
  • Percentage identity is obtained by determining the number of identical positions at which the sequences to be compared correspond, dividing this number by the number of positions compared (e.g., the number of positions in the reference sequence) and multiplying this result by 100.
  • the degree of similarity or identity is given for a region which is at least about 50%, at least about 60%, at least about 70%, at least about 80%, at least about 90% or about 100% of the entire length of the reference sequence.
  • the degree of identity is given for at least about 100, at least about 120, at least about 140, at least about 160, at least about 180, or about 200 nucleotides, in some embodiments continuous nucleotides.
  • the degree of similarity or identity is given for the entire length of the reference sequence.
  • Homologous amino acid sequences exhibit according to the disclosure at least 40%, in particular at least 50%, at least 60%, at least 70%, at least 80%, at least 90% and preferably at least 95%, at least 98 or at least 99% identity of the amino acid residues.
  • amino acid sequence variants described herein may readily be prepared by the skilled person, for example, by recombinant DNA manipulation.
  • the manipulation of DNA sequences for preparing peptides or proteins having substitutions, additions, insertions or deletions, is described in detail in Sambrook et al. (1989), for example.
  • the peptides and amino acid variants described herein may be readily prepared with the aid of known peptide synthesis techniques such as, for example, by solid phase synthesis and similar methods.
  • a fragment or variant of an amino acid sequence is preferably a "functional fragment” or “functional variant".
  • the term "functional fragment” or “functional variant” of an amino acid sequence relates to any fragment or variant exhibiting one or more functional properties identical or similar to those of the amino acid sequence from which it is derived, i.e., it is functionally equivalent.
  • one particular function is one or more immunogenic activities displayed by the amino acid sequence from which the fragment or variant is derived.
  • the modifications in the amino acid sequence of the parent molecule or sequence do not significantly affect or alter the characteristics of the molecule or sequence.
  • the function of the functional fragment or functional variant may be reduced but still significantly present, e.g., immunogenicity of the functional variant may be at least 50%, at least 60%, at least 70%, at least 80%, or at least 90% of the parent molecule or sequence.
  • immunogenicity of the functional fragment or functional variant may be enhanced compared to the parent molecule or sequence.
  • amino acid sequence "derived from” a designated amino acid sequence (peptide, protein or polypeptide) refers to the origin of the first amino acid sequence.
  • amino acid sequence which is derived from a particular amino acid sequence has an amino acid sequence that is identical, essentially identical or homologous to that particular sequence or a fragment thereof.
  • Amino acid sequences derived from a particular amino acid sequence may be variants of that particular sequence or a fragment thereof.
  • the antigens suitable for use herein may be altered such that they vary in sequence from the naturally occurring or native sequences from which they were derived, while retaining the desirable activity of the native sequences.
  • isolated means altered or removed from the natural state.
  • a nucleic acid or a peptide naturally present in a living animal is not “isolated”, but the same nucleic acid or peptide partially or completely separated from the coexisting materials of its natural state is "isolated”.
  • An isolated nucleic acid or protein can exist in substantially purified form, or can exist in a non-native environment such as, for example, a host cell.
  • the RNA (such as mRNA) used in the present disclosure is in substantially purified form.
  • a solution (preferably an aqueous solution) of RNA (such as mRNA) in substantially purified form contains a first buffer system.
  • the term “genetic modification” or simply “modification” includes the transfection of cells with nucleic acid.
  • the term “transfection” relates to the introduction of nucleic acids, in particular RNA, into a cell.
  • the term “transfection” also includes the introduction of a nucleic acid into a cell or the uptake of a nucleic acid by such cell, wherein the cell may be present in a subject, e.g., a patient.
  • a cell for transfection of a nucleic acid described herein can be present in vitro or in vivo, e.g. the cell can form part of an organ, a tissue and/or an organism of a patient.
  • transfection can be transient or stable. For some applications of transfection, it is sufficient if the transfected genetic material is only transiently expressed. RNA can be transfected into cells to transiently express its coded protein. Since the nucleic acid introduced in the transfection process is usually not integrated into the nuclear genome, the foreign nucleic acid will be diluted through mitosis or degraded. Cells allowing episomal amplification of nucleic acids greatly reduce the rate of dilution. If it is desired that the transfected nucleic acid actually remains in the genome of the cell and its daughter cells, a stable transfection must occur. Such stable transfection can be achieved by using virus-based systems or transposon-based systems for transfection. Generally, nucleic acid encoding antigen is transiently transfected into cells. RNA can be transfected into cells to transiently express its coded protein.
  • an analog of a peptide or protein is a modified form of said peptide or protein from which it has been derived and has at least one functional property of said peptide or protein.
  • a pharmacological active analog of a peptide or protein has at least one of the pharmacological activities of the peptide or protein from which the analog has been derived.
  • modifications include any chemical modification and comprise single or multiple substitutions, deletions and/or additions of any molecules associated with the protein or peptide, such as carbohydrates, lipids and/or proteins or peptides.
  • analogs of proteins or peptides include those modified forms resulting from glycosylation, acetylation, phosphorylation, amidation, palmitoylation, myristoylation, isoprenylation, lipidation, alkylation, derivatization, introduction of protective/blocking groups, proteolytic cleavage or binding to an antibody or to another cellular ligand.
  • the term “analog” also extends to all functional chemical equivalents of said proteins and peptides.
  • Activation refers to the state of an immune effector cell such as T cell that has been sufficiently stimulated to induce detectable cellular proliferation. Activation can also be associated with initiation of signaling pathways, induced cytokine production, and detectable effector functions.
  • activated immune effector cells refers to, among other things, immune effector cells that are undergoing cell division.
  • the term "priming" refers to a process wherein an immune effector cell such as a T cell has its first contact with its specific antigen and causes differentiation into effector cells such as effector T cells.
  • clonal expansion refers to a process wherein a specific entity is multiplied.
  • the term is preferably used in the context of an immunological response in which immune effector cells are stimulated by an antigen, proliferate, and the specific immune effector cell recognizing said antigen is amplified.
  • clonal expansion leads to differentiation of the immune effector cells.
  • an “antigen” covers any substance that will elicit an immune response and/or any substance against which an immune response or an immune mechanism such as a cellular response is directed. This also includes situations wherein the antigen is processed into antigen peptides and an immune response or an immune mechanism is directed against one or more antigen peptides, in particular if presented in the context of MHC molecules.
  • an “antigen” relates to any substance, preferably a peptide or protein, that reacts specifically with antibodies or T- lymphocytes (T-cells).
  • the term "antigen” comprises any molecule which comprises at least one epitope, such as a T cell epitope.
  • an antigen in the context of the present disclosure is a molecule which, optionally after processing, induces an immune reaction, which is preferably specific for the antigen (including cells expressing the antigen).
  • an antigen is a disease-associated antigen, such as a tumor antigen, a viral antigen, or a bacterial antigen, or an epitope derived from such antigen.
  • any suitable antigen may be used, which is a candidate for an immune response, wherein the immune response may be both a humoral as well as a cellular immune response.
  • the antigen is preferably presented by a cell, preferably by an antigen presenting cell, in the context of MHC molecules, which results in an immune response against the antigen.
  • An antigen is preferably a product which corresponds to or is derived from a naturally occurring antigen.
  • Such naturally occurring antigens may include or may be derived from allergens, viruses, bacteria, fungi, parasites and other infectious agents and pathogens or an antigen may also be a tumor antigen.
  • an antigen may correspond to a naturally occurring product, for example, a viral protein, or a part thereof.
  • disease-associated antigen is used in its broadest sense to refer to any antigen associated with a disease.
  • a disease-associated antigen is a molecule which contains epitopes that will stimulate a host's immune system to make a cellular antigen-specific immune response and/or a humoral antibody response against the disease.
  • Disease-associated antigens include pathogen-associated antigens, i.e., antigens which are associated with infection by microbes, typically microbial antigens (such as bacterial or viral antigens), or antigens associated with cancer, typically tumors, such as tumor antigens.
  • the antigen is a tumor antigen, i.e., a part of a tumor cell, in particular those which primarily occur intracellularly or as surface antigens of tumor cells.
  • the antigen is a pathogen-associated antigen, i.e., an antigen derived from a pathogen, e.g., from a vims, bacterium, unicellular organism, or parasite, for example a viral antigen such as viral ribonucleoprotein or coat protein.
  • the antigen should be presented by MHC molecules which results in modulation, in particular activation of cells of the immune system, preferably CD4+ and CD8+ lymphocytes, in particular via the modulation of the activity of a T-cell receptor.
  • tumor antigen refers to a constituent of cancer cells which may be derived from the cytoplasm, the cell surface or the cell nucleus. In particular, it refers to those antigens which are produced intracellularly or as surface antigens on tumor cells.
  • tumor antigens include the carcinoembryonal antigen, a 1 -fetoprotein, isoferritin, and fetal sulphoglycoprotein, a2-H-ferroprotein and g-fetoprotein, as well as various virus tumor antigens.
  • a tumor antigen preferably comprises any antigen which is characteristic for tumors or cancers as well as for tumor or cancer cells with respect to type and/or expression level.
  • viral antigen refers to any viral component having antigenic properties, i.e., being able to provoke an immune response in an individual.
  • the viral antigen may be a viral ribonucleoprotein or an envelope protein.
  • bacterial antigen refers to any bacterial component having antigenic properties, i.e. being able to provoke an immune response in an individual.
  • the bacterial antigen may be derived from the cell wall or cytoplasm membrane of the bacterium.
  • epitope refers to an antigenic determinant in a molecule such as an antigen, i.e., to a part in or fragment of the molecule that is recognized by the immune system, for example, that is recognized by antibodies T cells or B cells, in particular when presented in the context of MHC molecules.
  • An epitope of a protein preferably comprises a continuous or discontinuous portion of said protein and is preferably between about 5 and about 100, preferably between about 5 and about 50, more preferably between about 8 and about 0, most preferably between about 10 and about 25 amino acids in length, for example, the epitope may be preferably 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, or 25 amino acids in length. It is particularly preferred that the epitope in the context of the present disclosure is a T cell epitope.
  • an antigen which is preferably capable of eliciting an immune response against the antigen or a cell expressing or comprising and preferably presenting the antigen.
  • the terms relate to an immunogenic portion of an antigen.
  • it is a portion of an antigen that is recognized (i.e., specifically bound) by a T cell receptor, in particular if presented in the context of MHC molecules.
  • Certain preferred immunogenic portions bind to an MHC class I or class II molecule.
  • epitope refers to a part or fragment of a molecule such as an antigen that is recognized by the immune system.
  • the epitope may be recognized by T cells, B cells or antibodies.
  • An epitope of an antigen may include a continuous or discontinuous portion of the antigen and may be between about 5 and about 100, such as between about 5 and about 50, more preferably between about 8 and about 30, most preferably between about 8 and about 25 amino acids in length, for example, the epitope may be preferably 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, or 25 amino acids in length. In one embodiment, an epitope is between about 10 and about 25 amino acids in length.
  • epitope includes T cell epitopes.
  • T cell epitope refers to a part or fragment of a protein that is recognized by a T cell when presented in the context of MHC molecules.
  • major histocompatibility complex and the abbreviation "MHC” includes MHC class I and MHC class II molecules and relates to a complex of genes which is present in all vertebrates. MHC proteins or molecules are important for signaling between lymphocytes and antigen presenting cells or diseased cells in immune reactions, wherein the MHC proteins or molecules bind peptide epitopes and present them for recognition by T cell receptors on T cells.
  • the proteins encoded by the MHC are expressed on the surface of cells, and display both selfantigens (peptide fragments from the cell itself) and non-self-antigens (e.g., fragments of invading microorganisms) to a T cell.
  • the binding peptides are typically about 8 to about 10 amino acids long although longer or shorter peptides may be effective.
  • the binding peptides are typically about 10 to about 25 amino acids long and are in particular about 13 to about 18 amino acids long, whereas longer and shorter peptides may be effective.
  • the peptide and protein antigen can be 2 to 100 amino acids, including for example, 5 amino acids, 10 amino acids, 15 amino acids, 20 amino acids, 25 amino acids, 30 amino acids, 35 amino acids, 40 amino acids, 45 amino acids, or 50 amino acids in length. In some embodiments, a peptide can be greater than 50 amino acids. In some embodiments, the peptide can be greater than 100 amino acids.
  • the peptide or protein antigen can be any peptide or protein that can induce or increase the ability of the immune system to develop antibodies and T cell responses to the peptide or protein.
  • vaccine antigen i.e., an antigen whose inoculation into a subject induces an immune response
  • the vaccine antigen is recognized by an immune effector cell.
  • the vaccine antigen if recognized by an immune effector cell is able to induce in the presence of appropriate co-stimulatory signals, stimulation, priming and/or expansion of the immune effector cell carrying an antigen receptor recognizing the vaccine antigen.
  • the vaccine antigen is preferably presented or present on the surface of a cell, preferably an antigen presenting cell.
  • an antigen is presented by a diseased cell (such as tumor cell or an infected cell).
  • an antigen receptor is a TCR which binds to an epitope of an antigen presented in the context of MHC. In one embodiment, binding of a TCR when expressed by T cells and/or present on T cells to an antigen presented by cells such as antigen presenting cells results in stimulation, priming and/or expansion of said T cells. In one embodiment, binding of a TCR when expressed by T cells and/or present on T cells to an antigen presented on diseased cells results in cytolysis and/or apoptosis of the diseased cells, wherein said T cells preferably release cytotoxic factors, e.g., perforins and granzymes. In one embodiment, an antigen receptor is an antibody or B cell receptor which binds to an epitope in an antigen. In one embodiment, an antibody or B cell receptor binds to native epitopes of an antigen.
  • the term "expressed on the cell surface” or "associated with the cell surface” means that a molecule such as an antigen is associated with and located at the plasma membrane of a cell, wherein at least a part of the molecule faces the extracellular space of said cell and is accessible from the outside of said cell, e.g., by antibodies located outside the cell.
  • a part is preferably at least 4, preferably at least 8, preferably at least 12, more preferably at least 20 amino acids.
  • the association may be direct or indirect.
  • the association may be by one or more transmembrane domains, one or more lipid anchors, or by the interaction with any other protein, lipid, saccharide, or other structure that can be found on the outer leaflet of the plasma membrane of a cell.
  • a molecule associated with the surface of a cell may be a transmembrane protein having an extracellular portion or may be a protein associated with the surface of a cell by interacting with another protein that is a transmembrane protein.
  • Cell surface or “surface of a cell” is used in accordance with its normal meaning in the art, and thus includes the outside of the cell which is accessible to binding by proteins and other molecules.
  • An antigen is expressed on the surface of cells if it is located at the surface of said cells and is accessible to binding by, e.g., antigen-specific antibodies added to the cells.
  • extracellular portion or “exodomain” in the context of the present disclosure refers to a part of a molecule such as a protein that is facing the extracellular space of a cell and preferably is accessible from the outside of said cell, e.g., by binding molecules such as antibodies located outside the cell.
  • the term refers to one or more extracellular loops or domains or a fragment thereof.
  • T cell and "T lymphocyte” are used interchangeably herein and include T helper cells (CD4+ T cells) and cytotoxic T cells (CTLs, CD8+ T cells) which comprise cytolytic T cells.
  • T helper cells CD4+ T cells
  • CTLs cytotoxic T cells
  • antigen-specific T cell or similar terms relate to a T cell which recognizes the antigen to which the T cell is targeted, in particular when presented on the surface of antigen presenting cells or diseased cells such as cancer cells in the context of MHC molecules and preferably exerts effector functions of T cells.
  • T cells are considered to be specific for antigen if the cells kill target cells expressing an antigen.
  • T cell specificity may be evaluated using any of a variety of standard techniques, for example, within a chromium release assay or proliferation assay. Alternatively, synthesis of lymphokines (such as interferon-g) can be measured.
  • the RNA in particular mRNA
  • target shall mean an agent such as a cell or tissue which is a target for an immune response such as a cellular immune response.
  • Targets include cells that present an antigen or an antigen epitope, /. ⁇ ?., a peptide fragment derived from an antigen.
  • the target cell is a cell expressing an antigen and preferably presenting said antigen with class I MHC.
  • Antigen processing refers to the degradation of an antigen into processing products which are fragments of said antigen (e.g., the degradation of a protein into peptides) and the association of one or more of these fragments ( e.g ., via binding) with MHC molecules for presentation by cells, preferably antigen-presenting cells to specific T-cells.
  • antigen-responsive CTL is meant a CD8 + T-cell that is responsive to an antigen or a peptide derived from said antigen, which is presented with class I MHC on the surface of antigen presenting cells.
  • CTL responsiveness may include sustained calcium flux, cell division, production of cytokines such as IFN-g and TNF-a, up-regulation of activation markers such as CD44 and CD69, and specific cytolytic killing of tumor antigen expressing target cells.
  • CTL responsiveness may also be determined using an artificial reporter that accurately indicates CTL responsiveness.
  • immune response and “immune reaction” are used herein interchangeably in their conventional meaning and refer to an integrated bodily response to an antigen and preferably refers to a cellular immune response, a humoral immune response, or both.
  • the term “immune response to” or “immune response against” with respect to an agent such as an antigen, cell or tissue, relates to an immune response such as a cellular response directed against the agent.
  • An immune response may comprise one or more reactions selected from the group consisting of developing antibodies against one or more antigens and expansion of antigen-specific T-lymphocytes, preferably CD4 + and CD8 T-lymphocytes, more preferably CD8 + T-lymphocytes, which may be detected in various proliferation or cytokine production tests in vitro.
  • the terms "inducing an immune response” and “eliciting an immune response” and similar terms in the context of the present disclosure refer to the induction of an immune response, preferably the induction of a cellular immune response, a humoral immune response, or both.
  • the immune response may be protective/preventive/prophylactic and/or therapeutic.
  • the immune response may be directed against any immunogen or antigen or antigen peptide, preferably against a tumor-associated antigen or a pathogen-associated antigen (e.g., an antigen of a virus (such as influenza virus (A, B, or C), CMV or RSV)).
  • “Inducing” in this context may mean that there was no immune response against a particular antigen or pathogen before induction, but it may also mean that there was a certain level of immune response against a particular antigen or pathogen before induction and after induction said immune response is enhanced.
  • “inducing the immune response” in this context also includes “enhancing the immune response”.
  • said individual is protected from developing a disease such as an infectious disease or a cancerous disease or the disease condition is ameliorated by inducing an immune response.
  • cellular immune response means to include a cellular response directed to cells characterized by expression of an antigen and/or presentation of an antigen with class I or class II MHC.
  • the cellular response relates to cells called T cells or T lymphocytes which act as either "helpers” or “killers".
  • the helper T cells also termed CD4 + T cells
  • the killer cells also termed cytotoxic T cells, cytolytic T cells, CD8 + T cells or CTLs kill cells such as diseased cells.
  • the term "humoral immune response” refers to a process in living organisms wherein antibodies are produced in response to agents and organisms, which they ultimately neutralize and/or eliminate.
  • the specificity of the antibody response is mediated by T and/or B cells through membrane-associated receptors that bind antigen of a single specificity.
  • B lymphocytes divide, which produces memory B cells as well as antibody secreting plasma cell clones, each producing antibodies that recognize the identical antigenic epitope as was recognized by its antigen receptor.
  • Memory B lymphocytes remain dormant until they are subsequently activated by their specific antigen. These lymphocytes provide the cellular basis of memory and the resulting escalation in antibody response when re-exposed to a specific antigen.
  • antibody refers to an immunoglobulin molecule, which is able to specifically bind to an epitope on an antigen.
  • antibody refers to a glycoprotein comprising at least two heavy (H) chains and two light (L) chains inter-connected by disulfide bonds.
  • antibody includes monoclonal antibodies, recombinant antibodies, human antibodies, humanized antibodies, chimeric antibodies and combinations of any of the foregoing.
  • Each heavy chain is comprised of a heavy chain variable region (VH) and a heavy chain constant region (CH).
  • VL light chain variable region
  • CL light chain constant region
  • variable regions and constant regions are also referred to herein as variable domains and constant domains, respectively.
  • the VH and VL regions can be further subdivided into regions of hypervariability, termed complementarity determining regions (CDRs), interspersed with regions that are more conserved, termed framework regions (FRs).
  • CDRs complementarity determining regions
  • FRs framework regions
  • Each VH and VL is composed of three CDRs and four FRs, arranged from amino-terminus to carboxy-terminus in the following order: FR1, CDR1, FR2, CDR2, FR3, CDR3, FR4.
  • the CDRs of a VH are termed HCDR1 , HCDR2 and HCDR3, the CDRs of a VL are termed LCDR1, LCDR2 and LCDR3.
  • variable regions of the heavy and light chains contain a binding domain that interacts with an antigen.
  • the constant regions of an antibody comprise the heavy chain constant region (CH) and the light chain constant region (CL), wherein CH can be further subdivided into constant domain CHI, a hinge region, and constant domains CH2 and CH3 (arranged from amino-terminus to carboxy-terminus in the following order: CHI, CH2, CH3).
  • the constant regions of the antibodies may mediate the binding of the immunoglobulin to host tissues or factors, including various cells of the immune system (e.g ., effector cells) and the first component (Clq) of the classical complement system.
  • Antibodies can be intact immunoglobulins derived from natural sources or from recombinant sources and can be immunoactive portions of intact immunoglobulins. Antibodies are typically tetramers of immunoglobulin molecules. Antibodies may exist in a variety of forms including, for example, polyclonal antibodies, monoclonal antibodies, Fv, Fab and F(ab) 2 , as well as single chain antibodies and humanized antibodies.
  • immunoglobulin relates to proteins of the immunoglobulin superfamily, preferably to antigen receptors such as antibodies or the B cell receptor (BCR).
  • the immunoglobulins are characterized by a stmctural domain, i.e., the immunoglobulin domain, having a characteristic immunoglobulin (Ig) fold.
  • the term encompasses membrane bound immunoglobulins as well as soluble immunoglobulins.
  • Membrane bound immunoglobulins are also termed surface immunoglobulins or membrane immunoglobulins, which are generally part of the BCR. Soluble immunoglobulins are generally termed antibodies.
  • Immunoglobulins generally comprise several chains, typically two identical heavy chains and two identical light chains which are linked via disulfide bonds. These chains are primarily composed of immunoglobulin domains, such as the Vi, (variable light chain) domain, C L (constant light chain) domain, V H (variable heavy chain) domain, and the C H (constant heavy chain) domains CHI, CH2, CH3, and CH4. There are five types of mammalian immunoglobulin heavy chains, i.e., a, d, e, g, and m which account for the different classes of antibodies, i.e., IgA, IgD, IgE, IgG, and IgM.
  • the heavy chains of membrane or surface immunoglobulins comprise a transmembrane domain and a short cytoplasmic domain at their carboxy-terminus.
  • the immunoglobulin chains comprise a variable region and a constant region. The constant region is essentially conserved within the different isotypes of the immunoglobulins, wherein the variable part is highly divers and accounts for antigen recognition.
  • vaccination and “immunization” describe the process of treating an individual for therapeutic or prophylactic reasons and relate to the procedure of administering one or more immunogen(s) or antigen(s) or derivatives thereof, in particular in the form of RNA (especially mRNA) coding therefor, as described herein to an individual and stimulating an immune response against said one or more immunogen(s) or antigen(s) or cells characterized by presentation of said one or more immunogen(s) or antigen(s).
  • RNA especially mRNA
  • cell characterized by presentation of an antigen or “cell presenting an antigen” or “MHC molecules which present an antigen on the surface of an antigen presenting cell” or similar expressions is meant a cell such as a diseased cell, in particular a tumor cell or an infected cell, or an antigen presenting cell presenting the antigen or an antigen peptide, either directly or following processing, in the context of MHC molecules, preferably MHC class I and/or MHC class II molecules, most preferably MHC class I molecules.
  • transcription relates to a process, wherein the genetic code in a DNA sequence is transcribed into RNA (especially mRNA). Subsequently, the RNA (especially mRNA) may be translated into peptide or protein.
  • RNA With respect to RNA, the term "expression” or “translation” relates to the process in the ribosomes of a cell by which a strand of mRNA directs the assembly of a sequence of amino acids to make a peptide or protein.
  • Prodrugs of a particular compound described herein are those compounds that upon administration to an individual undergo chemical conversion under physiological conditions to provide the particular compound. Additionally, prodrugs can be converted to the particular compound by chemical or biochemical methods in an ex vivo environment. For example, prodrugs can be slowly converted to the particular compound when, for example, placed in a transdermal patch reservoir with a suitable enzyme or chemical reagent. Exemplary prodrugs are esters (using an alcohol or a carboxy group contained in the particular compound) or amides (using an amino or a carboxy group contained in the particular compound) which are hydrolyzable in vivo. Specifically, any amino group which is contained in the particular compound and which bears at least one hydrogen atom can be converted into a prodrug form. Typical N-prodrug forms include carbamates, Mannich bases, enamines, and enaminones.
  • “Isomers” are compounds having the same molecular formula but differ in structure (“structural isomers”) or in the geometrical (spatial) positioning of the functional groups and/or atoms (“stereoisomers”).
  • “Enantiomers” are a pair of stereoisomers which are non-superimposable mirror- images of each other.
  • a “racemic mixture” or “racemate” contains a pair of enantiomers in equal amounts and is denoted by the prefix ( ⁇ ).
  • “Diastereomers” are stereoisomers which are non- superimposable and which are not mirror-images of each other.
  • Tautomers are structural isomers of the same chemical substance that spontaneously and reversibly interconvert into each other, even when pure, due to the migration of individual atoms or groups of atoms; i.e., the tautomers are in a dynamic chemical equilibrium with each other.
  • An example of tautomers are the isomers of the keto-enol- tautomerism.
  • Conformers are stereoisomers that can be interconverted just by rotations about formally single bonds, and include - in particular - those leading to different 3-dimentional forms of (hetero)cyclic rings, such as chair, half-chair, boat, and twist-boat forms of cyclohexane.
  • average diameter refers to the mean hydrodynamic diameter of particles as measured by dynamic light scattering (DLS) with data analysis using the so-called cumulant algorithm, which provides as results the so-called Z average with the dimension of a length, and the polydispersity index (PDI), which is dimensionless (Koppel, Drete J. Chem. Phys. 57, 1972, pp 4814-4820, ISO 13321).
  • PDI polydispersity index
  • the "polydispersity index” is preferably calculated based on dynamic light scattering measurements by the so-called cumulant analysis as mentioned in the definition of the "average diameter". Under certain prerequisites, it can be taken as a measure of the size distribution of an ensemble of nanoparticles.
  • R g The "radius of gyration" (abbreviated herein as R g ) of a particle about an axis of rotation is the radial distance of a point from the axis of rotation at which, if the whole mass of the particle is assumed to be concentrated, its moment of inertia about the given axis would be the same as with its actual distribution of mass.
  • R g is the root mean square distance of the particle's components from either its center of mass or a given axis.
  • R g is the square-root of the mass average of Si 2 over all mass elements and can be calculated as follows:
  • the radius of gyration can be determined or calculated experimentally, e.g., by using light scattering.
  • the structure function S is defined as follows: wherein N is the number of components (Guinier's law).
  • the "D10 value”, in particular regarding a quantitative size distribution of particles, is the diameter at which 10% of the particles have a diameter less than this value.
  • the D10 value is a means to describe the proportion of the smallest particles within a population of particles (such as within a particle peak obtained from a field-flow fractionation).
  • D50 value in particular regarding a quantitative size distribution of particles, is the diameter at which 50% of the particles have a diameter less than this value.
  • the D50 value is a means to describe the mean particle size of a population of particles (such as within a particle peak obtained from a field-flow fractionation).
  • the "D90 value”, in particular regarding a quantitative size distribution of particles, is the diameter at which 90% of the particles have a diameter less than this value.
  • the "D95”, “D99”, and “D100” values have corresponding meanings.
  • the D90, D95, D99, and D100 values are means to describe the proportion of the larger particles within a population of particles (such as within a particle peak obtained from a field-flow fractionation).
  • the "hydrodynamic radius” (which is sometimes called “Stokes radius” or “Stokes-Einstein radius”) of a particle is the radius of a hypothetical hard sphere that diffuses at the same rate as said particle.
  • the hydrodynamic radius is related to the mobility of the particle, taking into account not only size but also solvent effects. For example, a smaller charged particle with stronger hydration may have a greater hydrodynamic radius than a larger charged particle with weaker hydration. This is because the smaller particle drags a greater number of water molecules with it as it moves through the solution.
  • the hydrodynamic radius may be defined by the Stokes-Einstein equation: wherein / 3 ⁇ 4 is the Boltzmann constant; T is the temperature; h is the viscosity of the solvent; and D is the diffusion coefficient.
  • the diffusion coefficient can be determined experimentally, e.g., by using dynamic light scattering (DLS).
  • one procedure to determine the hydrodynamic radius of a particle or a population of particles is to measure the DLS signal of said particle or population of particles (such as DLS signal of particles such as LNPs contained in a formulation or composition as disclosed herein or the DLS signal of a particle peak obtained from subjecting such a formulation or composition to field-flow fractionation).
  • aggregate as used herein relates to a cluster of particles, wherein the particles are identical or very similar and adhere to each other in a non-covalently manner (e.g., via ionic interactions, H bridge interactions, dipole interactions, and/or van der Waals interactions).
  • light scattering refers to the physical process where light is forced to deviate from a straight trajectory by one or more paths due to localized non-uniformities in the medium through which the light passes.
  • LTV means ultraviolet and designates a band of the electromagnetic spectrum with a wavelength from 10 nm to 400 nm, i.e., shorter than that of visible light but longer than X-rays.
  • MALS multi-angle light scattering
  • a technique for measuring the light scattered by a sample into a plurality of angles relates to a technique for measuring the light scattered by a sample into a plurality of angles.
  • Multi-angle means in this respect that scattered light can be detected at different discrete angles as measured, for example, by a single detector moved over a range including the specific angles selected or an array of detectors fixed at specific angular locations.
  • the light source used in MALS is a laser source (MALLS: multi-angle laser light scattering).
  • the Zimm plot is a graphical presentation using the following equation: wherein c is the mass concentration of the particles in the solvent (g/mL); A 2 is the second virial coefficient (mol-mL/g 2 ); P( ⁇ ) is a form factor relating to the dependence of scattered light intensity on angle; R ⁇ is the excess Rayleigh ratio (cm 1 ); and K* is an optical constant that is equal to 4p 2 h 0 where ⁇ o is the refractive index of the solvent at the incident radiation (vacuum) wavelength, lo is the incident radiation (vacuum) wavelength (nm), N, ⁇ is Avogadro’s number (mof '), and dn/dc is the differential refractive index increment (mL/g) (cf, e.g., Buchholz et al.
  • the Berry plot is calculated the following term: wherein c, R ⁇ and K* are as defined above.
  • the Debye plot is calculated the following term: wherein c, R ⁇ and K * are as defined above.
  • DLS dynamic light scattering
  • a monochromatic light source usually a laser
  • the scattered light then goes through a second polarizer where it is detected and the resulting image is projected onto a screen.
  • the particles in the solution are being hit with the light and diffract the light in all directions.
  • the diffracted light from the particles can either interfere constructively (light regions) or destructively (dark regions). This process is repeated at short time intervals and the resulting set of speckle patterns are analyzed by an autocorrelator that compares the intensity of light at each spot over time.
  • SLS static light scattering
  • MALS multi-angle light scattering
  • MALLS multiangle laser light scattering
  • nucleic acid comprises deoxyribonucleic acid (DNA), ribonucleic acid (RNA), combinations thereof, and modified forms thereof.
  • the term comprises genomic DNA, cDNA, mRNA, recombinantly produced and chemically synthesized molecules.
  • a nucleic acid may be present as a single-stranded or double-stranded and linear or covalently circularly closed molecule.
  • a nucleic acid can be isolated.
  • isolated nucleic acid means, according to the present disclosure, that the nucleic acid (i) was amplified in vitro, for example via polymerase chain reaction (PCR) for DNA or in vitro transcription (using, e.g., an RNA polymerase) for RNA, (ii) was produced recombinantly by cloning, (iii) was purified, for example, by cleavage and separation by gel electrophoresis, or (iv) was synthesized, for example, by chemical synthesis.
  • PCR polymerase chain reaction
  • RNA polymerase RNA polymerase
  • nucleoside (abbreviated herein as "N") relates to compounds which can be thought of as nucleotides without a phosphate group. While a nucleoside is a nucleobase linked to a sugar ⁇ e.g., ribose or deoxyribose), a nucleotide is composed of a nucleoside and one or more phosphate groups. Examples of nucleosides include cytidine, uridine, pseudouridine, adenosine, and guanosine.
  • the five standard nucleosides which usually make up naturally occurring nucleic acids are uridine, adenosine, thymidine, cytidine and guanosine.
  • the five nucleosides are commonly abbreviated to their one letter codes U, A, T, C and G, respectively.
  • thymidine is more commonly written as “dT” ("d” represents “deoxy") as it contains a 2'-deoxyribofuranose moiety rather than the ribofuranose ring found in uridine. This is because thymidine is found in deoxyribonucleic acid (DNA) and not ribonucleic acid (RNA).
  • uridine is found in RNA and not DNA.
  • the remaining three nucleosides may be found in both RNA and DNA. In RNA, they would be represented as A, C and G, whereas in DNA they would be represented as dA, dC and dG.
  • a modified purine (A or G) or pyrimidine (C, T, or U) base moiety is preferably modified by one or more alkyl groups, more preferably one or more C 1.4 alkyl groups, even more preferably one or more methyl groups.
  • modified purine or pyrimidine base moieties include N 7 -alkyl- guanine, N 6 -alkyl-adenine, 5-alkyl-cytosine, 5-alkyl-uracil, andN(l)-alkyl-uracil, such as N 7 -C 1 - 4 alkyl- guanine, N 6 -C 1-4 alkyl-adenine, 5-CM alkyl-cytosine, 5-CM alkyl-uracil, and N(1)-C 1-4 alkyl-uracil, preferably N 7 -methyl-guanine, N 6 -methyl -adenine, 5-methyl-cytosine, 5-methyl-uracil, and N(l)- methyl-uracil
  • DNA relates to a nucleic acid molecule which includes deoxyribonucleotide residues.
  • the DNA contains all or a majority of deoxyribonucleotide residues.
  • deoxyribonucleotide refers to a nucleotide which lacks a hydroxyl group at the 2'-position of a b-D-ribofuranosyl group.
  • DNA encompasses without limitation, double stranded DNA, single stranded DNA, isolated DNA such as partially purified DNA, essentially pure DNA, synthetic DNA, recombinantly produced DNA, as well as modified DNA that differs from naturally occurring DNA by the addition, deletion, substitution and/or alteration of one or more nucleotides. Such alterations may refer to addition of non-nucleotide material to internal DNA nucleotides or to the end(s) of DNA. It is also contemplated herein that nucleotides in DNA may be non-standard nucleotides, such as chemically synthesized nucleotides or ribonucleotides. For the present disclosure, these altered DNAs are considered analogs of naturally-occurring DNA.
  • a molecule contains "a majority of deoxyribonucleotide residues" if the content of deoxyribonucleotide residues in the molecule is more than 50% (such as at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99%), based on the total number of nucleotide residues in the molecule.
  • the total number of nucleotide residues in a molecule is the sum of all nucleotide residues (irrespective of whether the nucleotide residues are standard (i.e., naturally occurring) nucleotide residues or analogs thereof).
  • DNA may be recombinant DNA and may be obtained by cloning of a nucleic acid, in particular cDNA.
  • the cDNA may be obtained by reverse transcription of RNA.
  • RNA means a nucleic acid molecule which includes ribonucleotide residues. In preferred embodiments, the RNA contains all or a majority of ribonucleotide residues.
  • ribonucleotide refers to a nucleotide with a hydroxyl group at the 2'-position of a b-D-ribofuranosyl group.
  • RNA encompasses without limitation, double stranded RNA, single stranded RNA, isolated RNA such as partially purified RNA, essentially pure RNA, synthetic RNA, recombinantly produced RNA, as well as modified RNA that differs from naturally occurring RNA by the addition, deletion, substitution and/or alteration of one or more nucleotides. Such alterations may refer to addition of non-nucleotide material to internal RNA nucleotides or to the end(s) of RNA. It is also contemplated herein that nucleotides in RNA may be non-standard nucleotides, such as chemically synthesized nucleotides or deoxynucleotides.
  • altered/modified nucleotides can be referred to as analogs of naturally occurring nucleotides, and the corresponding RNAs containing such altered/modified nucleotides (i.e., altered/modified RNAs) can be referred to as analogs of naturally occurring RNAs.
  • a molecule contains "a majority of ribonucleotide residues" if the content of ribonucleotide residues in the molecule is more than 50% (such as at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99%), based on the total number of nucleotide residues in the molecule.
  • the total number of nucleotide residues in a molecule is the sum of all nucleotide residues (irrespective of whether the nucleotide residues are standard (i.e., naturally occurring) nucleotide residues or analogs thereof).
  • RNA includes mRNA, tRNA, ribosomal RNA (rRNA), small nuclear RNA (snRNA), self-amplifying RNA (saRNA), single-stranded RNA (ssRNA), dsRNA, inhibitory RNA (such as antisense ssRNA, small interfering RNA (siRNA), or microRNA (miRNA)), activating RNA (such as small activating RNA) and immunostimulatory RNA (isRNA).
  • rRNA ribosomal RNA
  • snRNA small nuclear RNA
  • saRNA self-amplifying RNA
  • ssRNA single-stranded RNA
  • dsRNA dsRNA
  • inhibitory RNA such as antisense ssRNA, small interfering RNA (siRNA), or microRNA (miRNA)
  • activating RNA such as small activating RNA
  • isRNA immunostimulatory RNA
  • the RNA comprises an open reading frame (ORF) encoding a peptide or protein.
  • ORF open reading frame
  • IVT in vitro transcription
  • the transcription i.e., the generation of RNA
  • IVT does not use living/cultured cells but rather the transcription machinery extracted from cells (e.g., cell lysates or the isolated components thereof, including an RNA polymerase (preferably T7, T3 or SP6 polymerase)).
  • mRNA means "messenger-RNA” and relates to a "transcript” which may be generated by using a DNA template and may encode a peptide or protein.
  • an mRNA comprises a 5'-UTR, a peptide/protein coding region, and a 3'-UTR.
  • mRNA is preferably generated by in vitro transcription (IVT) from a DNA template.
  • IVTT in vitro transcription
  • the in vitro transcription methodology is known to the skilled person, and a variety of in vitro transcription kits is commercially available.
  • mRNA is single-stranded but may contain self-complementary sequences that allow parts of the mRNA to fold and pair with itself to form double helices.
  • dsRNA means double-stranded RNA and is RNA with two partially or completely complementary strands.
  • the mRNA relates to an RNA transcript which encodes a peptide or protein.
  • the RNA which preferably encodes a peptide or protein has a length of at least 45 nucleotides (such as at least 60, at least 90, at least 100, at least 200, at least 300, at least 400, at least 500, at least 600, at least 700, at least 800, at least 900, at least 1,000, at least 1,500, at least 2,000, at least 2,500, at least 3,000, at least 3,500, at least 4,000, at least 4,500, at least 5,000, at least 6,000, at least 7,000, at least 8,000, at least 9,000 nucleotides), preferably up to 15,000, such as up to 14,000, up to 13,000, up to 12,000 nucleotides, up to 11,000 nucleotides or up to 10,000 nucleotides.
  • nucleotides such as at least 60, at least 90, at least 100, at least 200, at least 300, at least 400, at least 500, at least 600, at least 700, at least 800, at least 900, at least 1,000, at least 1,
  • the RNA (such as mRNA) contains a 5' untranslated region (5'-UTR), a peptide coding region and a 3' untranslated region (3'-UTR).
  • the RNA (such as mRNA) is produced by in vitro transcription or chemical synthesis.
  • the RNA (such as mRNA) is produced by in vitro transcription using a DNA template.
  • the in vitro transcription methodology is known to the skilled person; cf., e.g., Molecular Cloning: A Laboratory Manual, 2 nd Edition, J. Sambrook et al. eds., Cold Spring Harbor Laboratory Press, Cold Spring Harbor 1989.
  • in vitro transcription kits are commercially available, e.g., from Thermo Fisher Scientific (such as Transcript AidTM T7 kit, MEGAscript® T7 kit, MAXIscript®), New England BioLabs Inc. (such as HiScribeTM T7 kit, HiScribeTM T7 ARCA mRNA kit), Promega (such as RiboMAXTM, HeLaScribe®, Riboprobe® systems), Jena Bioscience (such as SP6 or T7 transcription kits), and Epicentre (such as AmpliScribeTM).
  • Thermo Fisher Scientific such as Transcript AidTM T7 kit, MEGAscript® T7 kit, MAXIscript®
  • New England BioLabs Inc. such as HiScribeTM T7 kit, HiScribeTM T7 ARCA mRNA kit
  • Promega such as RiboMAXTM, HeLaScribe®, Riboprobe® systems
  • Jena Bioscience such as SP6 or T7 transcription kits
  • Epicentre such as AmpliScri
  • modified RNA such as mRNA
  • correspondingly modified nucleotides such as modified naturally occurring nucleotides, non-naturally occurring nucleotides and/or modified non-naturally occurring nucleotides, can be incorporated during synthesis (preferably in vitro transcription), or modifications can be effected in and/or added to the mRNA after transcription.
  • RNA such as mRNA
  • IVT-RNA in vitro transcribed RNA
  • the promoter for controlling transcription can be any promoter for any RNA polymerase.
  • RNA polymerases are the T7, T3, and SP6 RNA polymerases.
  • the in vitro transcription is controlled by a T7 or SP6 promoter.
  • a DNA template for in vitro transcription may be obtained by cloning of a nucleic acid, in particular cDNA, and introducing it into an appropriate vector for in vitro transcription.
  • the cDNA may be obtained by reverse transcription of RNA.
  • the RNA (such as mRNA) is “replicon RNA” (such as “replicon mRNA”) or simply a “replicon”, in particular “self-replicating RNA” (such as “self- replicating mRNA”) or “self-amplifying RNA” (or “self-amplifying mRNA”).
  • the replicon or self-replicating RNA (such as self-replicating mRNA) is derived from or comprises elements derived from an ssRNA virus, in particular a positive-stranded ssRNA virus such as an alphavirus. Alphaviruses are typical representatives of positive-stranded RNA viruses.
  • Alphaviruses replicate in the cytoplasm of infected cells (for review of the alphaviral life cycle see Jose et ah, Future Microbiol., 2009, vol. 4, pp. 837-856).
  • the total genome length of many alphaviruses typically ranges between 11,000 and 12,000 nucleotides, and the genomic RNA typically has a 5’-cap, and a 3’ poly(A) tail.
  • the genome of alphaviruses encodes non-structural proteins (involved in transcription, modification and replication of viral RNA and in protein modification) and structural proteins (forming the virus particle). There are typically two open reading frames (ORFs) in the genome.
  • the four non-structural proteins are typically encoded together by a first ORF beginning near the 5' terminus of the genome, while alphavirus structural proteins are encoded together by a second ORF which is found downstream of the first ORF and extends near the 3’ terminus of the genome.
  • first ORF is larger than the second ORF, the ratio being roughly 2: 1.
  • RNA RNA molecule that resembles eukaryotic messenger RNA
  • mRNA messenger RNA
  • nsP1234 a messenger RNA for the translation of the open reading frame encoding the non-structural poly-protein
  • Alphavirus-based trans-replication systems rely on alphavirus nucleotide sequence elements on two separate nucleic acid molecules: one nucleic acid molecule encodes a viral replicase, and the other nucleic acid molecule is capable of being replicated by said replicase in trans (hence the designation trans-replication system).
  • Trans-replication requires the presence of both these nucleic acid molecules in a given host cell.
  • the nucleic acid molecule capable of being replicated by the replicase in trans must comprise certain alphaviral sequence elements to allow recognition and RNA synthesis by the alphaviral replicase.
  • the RNA (such as mRNA) contains one or more modifications, e.g., in order to increase its stability and/or increase translation efficiency and/or decrease immunogenicity and/or decrease cytotoxicity.
  • the RNA in order to increase expression of the RNA (such as mRNA), it may be modified within the coding region, i.e., the sequence encoding the expressed peptide or protein, preferably without altering the sequence of the expressed peptide or protein.
  • modifications are described, for example, in WO 2007/036366 and PCT/EP2019/056502, and include the following: a 5'-cap structure; an extension or truncation of the naturally occurring poly(A) tail; an alteration of the 5'- and/or 3 '-untranslated regions (UTR) such as introduction of a UTR which is not related to the coding region of said RNA; the replacement of one or more naturally occurring nucleotides with synthetic nucleotides; and codon optimization (e.g., to alter, preferably increase, the GC content of the RNA).
  • the term "modification" in the context of modified mRNA according to the present disclosure preferably relates to any modification of an mRNA which is not naturally present in said RNA (such as mRNA).
  • the RNA (such as mRNA) comprises a 5'-cap structure. In one embodiment, the mRNA does not have uncapped 5'-triphosphates. In one embodiment, the RNA (such as mRNA) may comprise a conventional 5'-cap and/or a 5'-cap analog.
  • inventional 5'-cap refers to a cap structure found on the 5 '-end of an mRNA molecule and generally consists of a guanosine 5'- triphosphate (Gppp) which is connected via its triphosphate moiety to the 5'-end of the next nucleotide of the mRNA (/. ⁇ ?., the guanosine is connected via a 5' to 5' triphosphate linkage to the rest of the mRNA).
  • Gppp guanosine 5'- triphosphate
  • the guanosine may be methylated at position N 7 (resulting in the cap structure m 7 Gppp).
  • 5 - cap analog refers to a 5'-cap which is based on a conventional 5'-cap but which has been modified at either the 2'- or 3 '-position of the m 7 guanosine structure in order to avoid an integration of the 5 '-cap analog in the reverse orientation (such 5'-cap analogs are also called anti-reverse cap analogs (ARCAs)).
  • ARCAs anti-reverse cap analogs
  • Particularly preferred 5 '-cap analogs are those having one or more substitutions at the bridging and nonbridging oxygen in the phosphate bridge, such as phosphorothioate modified 5'-cap analogs at the b- phosphate (such as m 2 7,2 °G(5')ppSp(5')G (referred to as beta-S-ARCA or b-S-ARCA)), as described in PCT/EP2019/056502.
  • phosphorothioate modified 5'-cap analogs at the b- phosphate such as m 2 7,2 °G(5')ppSp(5')G (referred to as beta-S-ARCA or b-S-ARCA)
  • RNA such as mRNA
  • a 5'-cap structure as described herein may be achieved by in vitro transcription of a DNA template in presence of a corresponding 5'-cap compound, wherein said 5'-cap structure is co-transcriptionally incorporated into the generated RNA (such as mRNA) strand, or the RNA (such as mRNA) may be generated, for example, by in vitro transcription, and the 5'-cap structure may be attached to the mRNA post-transcriptionally using capping enzymes, for example, capping enzymes of vaccinia virus.
  • capping enzymes for example, capping enzymes of vaccinia virus.
  • the RNA (such as mRNA) comprises a 5'-cap structure selected from the group consisting of m 2 7 ’ 2'0 G(5’)ppSp(5')G (in particular its D1 diastereomer), m 2 7,3 °G(5')ppp(5')G, and m2 7 ' 3'" °Gppp(mr " °)ApG .
  • the RNA (such as mRNA) comprises a capO, capl, or cap2, preferably capl or cap2.
  • capO means the structure "m 7 GpppN", wherein N is any nucleoside bearing an OH moiety at position 2'.
  • capl means the structure “nrGpppNm”, wherein Nm is any nucleoside bearing an OOP moiety at position 2'.
  • cap2 means the structure "m 7 GpppNmNm", wherein each Nm is independently any nucleoside bearing an OC3 ⁇ 4 moiety at position 2'.
  • the D1 diastereomer of beta-S-ARCA has the following structure:
  • the "D1 diastereomer of beta-S-ARC A” or “beta-S-ARCA(Dl)” is the diastereomer of beta-S-ARCA which elutes first on an HPLC column compared to the D2 diastereomer of beta-S-ARCA (beta-S- ARC A(D2)) and thus exhibits a shorter retention time.
  • the HPLC preferably is an analytical HPLC.
  • a Supelcosil LC-18-T RP column preferably of the format: 5 ⁇ m, 4.6 x 250 mm is used for separation, whereby a flow rate of 1.3 ml/min can be applied.
  • UV-detection (VWD) can be performed at 260 nm and fluorescence detection (FLD) can be performed with excitation at 280 nm and detection at 337 nm.
  • the 5'-cap analog m2 7 - 3 ' -O Gppp(mi 2'' °)ApG (also referred to as m 2 7 ’ 3'O G(5')ppp(5')m 2''O ApG) which is a building block of a cap 1 has the following structure:
  • An exemplary capO mRNA comprising b-S-ARCA and mRNA has the following structure:
  • An exemplary capO mRNA comprising m 2 7,3'O G(5')ppp(5')G and mRNA has the following structure:
  • An exemplary capl mRNA comprising m2 7,3 O Gppp(m] 2' O )ApG and mRNA has the following structure:
  • poly-A tail or "poly-A sequence” refers to an uninterrupted or interrupted sequence of adenylate residues which is typically located at the 3'-end of an RNA (such as mRNA) molecule.
  • Poly-A tails or poly-A sequences are known to those of skill in the art and may follow the 3 ’- UTR in the RNAs described herein.
  • An uninterrupted poly-A tail is characterized by consecutive adenylate residues. In nature, an uninterrupted poly-A tail is typical.
  • RNAs such as mRNAs
  • RNAs can have a poly-A tail attached to the free 3'-end of the RNA by a template-independent RNA polymerase after transcription or a poly-A tail encoded by DNA and transcribed by a template-dependent RNA polymerase.
  • poly-A tail of about 120 A nucleotides has a beneficial influence on the levels of mRNA in transfected eukaryotic cells, as well as on the levels of protein that is translated from an open reading frame that is present upstream (5’) of the poly-A tail (Holtkamp et al., 2006, Blood, vol. 108, pp. 4009-4017).
  • the poly-A tail may be of any length.
  • a poly-A tail comprises, essentially consists of, or consists of at least 20, at least 30, at least 40, at least 80, or at least 100 and up to 500, up to 400, up to 300, up to 200, or up to 150 A nucleotides, and, in particular, about 120 A nucleotides.
  • nucleotides in the poly-A tail typically at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 96%, at least 97%, at least 98%, or at least 99% by number of nucleotides in the poly-A tail are A nucleotides, but permits that remaining nucleotides are nucleotides other than A nucleotides, such as U nucleotides (uridylate), G nucleotides (guanylate), or C nucleotides (cytidylate).
  • nucleotide or “A” refers to adenylate.
  • a poly-A tail is attached during RNA transcription, e.g., during preparation of in vitro transcribed RNA, based on a DNA template comprising repeated dT nucleotides (deoxythymidylate) in the strand complementary to the coding strand.
  • the DNA sequence encoding a poly-A tail (coding strand) is referred to as poly(A) cassette.
  • the poly(A) cassette present in the coding strand of DNA essentially consists of dA nucleotides, but is interrupted by a random sequence of the four nucleotides (dA, dC, dG, and dT). Such random sequence may be 5 to 50, 10 to 30, or 10 to 20 nucleotides in length.
  • a cassette is disclosed in WO 2016/005324 Al, hereby incorporated by reference. Any poly(A) cassette disclosed in WO 2016/005324 Al may be used in the present disclosure.
  • a poly(A) cassette that essentially consists of dA nucleotides, but is interrupted by a random sequence having an equal distribution of the four nucleotides (dA, dC, dG, dT) and having a length of e.g., 5 to 50 nucleotides shows, on DNA level, constant propagation of plasmid DNA in E. coli and is still associated, on RNA level, with the beneficial properties with respect to supporting RNA stability and translational efficiency is encompassed. Consequently, in some embodiments, the poly-A tail contained in an mRNA molecule described herein essentially consists of A nucleotides, but is interrupted by a random sequence of the four nucleotides (A, C, G, U).
  • Such random sequence may be 5 to 50, 10 to 30, or 10 to 20 nucleotides in length.
  • no nucleotides other than A nucleotides flank a poly-A tail at its 3'-end, i.e., the poly-A tail is not masked or followed at its 3'-end by a nucleotide other than A.
  • the poly-A sequence comprises at least 100 nucleotides. In one embodiment, the poly-A sequence comprises or consists of the nucleotide sequence of SEQ ID NO: 14. In one embodiment, the poly-A sequence has a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ED NO: 14.
  • the term "untranslated region" or “UTR” relates to a region in a DNA molecule which is transcribed but is not translated into an amino acid sequence, or to the corresponding region in an RNA molecule, such as an mRNA molecule.
  • An untranslated region (UTR) can be present 5' (upstream) of an open reading frame (5 -UTR) and/or 3' (downstream) of an open reading frame (3 '-UTR).
  • a 5 '-UTR if present, is located at the 5'-end, upstream of the start codon of a protein-encoding region.
  • a 5'-UTR is downstream of the 5'-cap (if present), e.g., directly adjacent to the 5'-cap.
  • a 3'-UTR if present, is located at the 3'-end, downstream of the termination codon of a protein-encoding region, but the term "3'-UTR" does preferably not include the poly-A sequence.
  • the 3'-UTR is upstream of the poly-A sequence (if present), e.g., directly adjacent to the poly-A sequence.
  • Incorporation of a 3'-UTR into the 3'-non translated region of an RNA (preferably mRNA) molecule can result in an enhancement in translation efficiency.
  • a synergistic effect may be achieved by incorporating two or more of such 3'- UTRs (which are preferably arranged in a head-to-tail orientation; cf., e.g., Holtkamp et al., Blood 108, 4009-4017 (2006)).
  • the 3'-UTRs may be autologous or heterologous to the RNA (preferably mRNA) into which they are introduced.
  • the 3'-UTR is derived from a globin gene or mRNA, such as a gene or mRNA of alpha2-globin, alpha 1 -globin, or beta-globin, preferably beta- globin, more preferably human beta-globin.
  • the RNA (preferably mRNA) may be modified by the replacement of the existing 3'-UTR with or the insertion of one or more, preferably two copies of a 3'-UTR derived from a globin gene, such as alpha2-globin, alpha 1 -globin, beta-globin, preferably beta-globin, more preferably human beta-globin.
  • a globin gene such as alpha2-globin, alpha 1 -globin, beta-globin, preferably beta-globin, more preferably human beta-globin.
  • the RNA (such as mRNA) used in present disclosure comprises a 5’ UTR comprising the nucleotide sequence of SEQ ID NO: 12, or a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 12.
  • the RNA (such as mRNA) used in present disclosure comprises a 3’ UTR comprising the nucleotide sequence of SEQ ID NO: 13, or a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 13.
  • the RNA (such as mRNA) may have modified ribonucleotides in order to increase its stability and/or decrease immunogenicity and/or decrease cytotoxicity.
  • uridine in the RNA (such as mRNA) described herein is replaced (partially or completely, preferably completely) by a modified nucleoside.
  • the modified nucleoside is a modified uridine.
  • the modified uridine replacing uridine is selected from the group consisting of pseudouridine (y), N1 -methyl-pseudouridine (hi ⁇ y), 5 -methyl-uridine (m5U), and combinations thereof.
  • the modified nucleoside replacing (partially or completely, preferably completely) uridine in the RNA may be any one or more of 3 -methyl-uridine (m3U), 5-methoxy-uridine (mo5U), 5-aza-uridine, 6-aza-uridine, 2-thio-5-aza-uridine, 2-thio-uridine (s2U), 4- thio-uridine (s4U), 4-thio-pseudouridine, 2-thio-pseudouridine, 5 -hydroxy-uridine (ho5U), 5- aminoallyl-uridine, 5-halo-uridine (e.g., 5-iodo-uridineor 5-bromo-uridine), uridine 5-oxyacetic acid (cmo5U), uridine 5-oxyacetic acid methyl ester (mcmo5U), 5-carboxymethyl-uridine (cm5U), 1- carboxymethyl-pseudouridine, 5-carboxyhydroxy
  • 5-carbamoylmethyl-2'-0-methyl-uridine ncm5Um
  • 5-carboxymethylaminomethyl-2'-0-methyl- uridine cmnm5Um
  • 3,2'-0-dimethyl-uridine m3Um
  • 5-(isopentenylaminomethyl)-2'-0-methyl- uridine inm5Um
  • 1 -thio-uridine deoxythymidine, 2'-F-ara-uridine, 2'-F-uridine, 2'-OH-ara-uridine
  • 5- (2-carbomethoxyvinyl) uridine 5-[3-(l-E-propenylamino)uridine, or any other modified uridine known in the art.
  • RNA which is modified by pseudouridine (replacing partially or completely, preferably completely, uridine)
  • Y-modified An RNA (preferably mRNA) which is modified by pseudouridine (replacing partially or completely, preferably completely, uridine)
  • ml'P-modified means that the RNA (preferably mRNA) contains N( 1 )-methylpseudouridine (replacing partially or completely, preferably completely, uridine).
  • m5U-modified means that the RNA (preferably mRNA) contains 5-methyluridine (replacing partially or completely, preferably completely, uridine).
  • Such Y- or hiIY- or m5U-modified RNAs usually exhibit decreased immunogenicity compared to their unmodified forms and, thus, are preferred in applications where the induction of an immune response is to be avoided or minimized.
  • the codons of the RNA (preferably mRNA) used in the present disclosure may further be optimized, e.g., to increase the GC content of the RNA and/or to replace codons which are rare in the cell (or subject) in which the peptide or protein of interest is to be expressed by codons which are synonymous frequent codons in said cell (or subject).
  • the amino acid sequence encoded by the RNA used in the present disclosure is encoded by a coding sequence which is codon-optimized and/or the G/C content of which is increased compared to wild type coding sequence.
  • This also includes embodiments, wherein one or more sequence regions of the coding sequence are codon-optimized and/or increased in the G/C content compared to the corresponding sequence regions of the wild type coding sequence.
  • the codon-optimization and/or the increase in the G/C content preferably does not change the sequence of the encoded amino acid sequence.
  • coding regions are preferably codon-optimized for optimal expression in a subject to be treated using the RNA (preferably mRNA) described herein. Codon-optimization is based on the finding that the translation efficiency is also determined by a different frequency in the occurrence of tRNAs in cells. Thus, the sequence of RNA (preferably mRNA) may be modified such that codons for which frequently occurring tRNAs are available are inserted in place of "rare codons".
  • the guanosine/cytosine (G/C) content of the coding region of the RNA (preferably mRNA) described herein is increased compared to the G/C content of the corresponding coding sequence of the wild type RNA, wherein the amino acid sequence encoded by the RNA (preferably mRNA) is preferably not modified compared to the amino acid sequence encoded by the wild type RNA.
  • This modification of the RNA sequence is based on the fact that the sequence of any RNA region to be translated is important for efficient translation of that RNA (preferably mRNA). Sequences having an increased G (guanosine)/C (cytosine) content are more stable than sequences having an increased A (adenosine)/U (uracil) content.
  • RNA preferably mRNA
  • codons which contain A and/or U nucleotides can be modified by substituting these codons by other codons, which code for the same amino acids but contain no A and/or U or contain a lower content of A and/or U nucleotides.
  • the G/C content of the coding region of the mRNA described herein is increased by at least 10%, at least 20%, at least 30%, at least 40%, at least 50%, at least 55%, or even more compared to the G/C content of the coding region of the wild type RNA.
  • a combination of the above described modifications i.e., incorporation of a 5'-cap structure, incorporation of a poly- A sequence, unmasking of a poly- A sequence, alteration of the 5'- and/or 3'- UTR (such as incorporation of one or more 3'-UTRs), replacing one or more naturally occurring nucleotides with synthetic nucleotides (e.g ., 5-methylcytidine for cytidine and/or pseudouridine (Y) or N(l)-methylpseudouridine (m 1 Y) or 5-methyluridine (m5U) for uridine), and codon optimization, has a synergistic influence on the stability of RNA (preferably mRNA) and increase in translation efficiency.
  • RNA preferably mRNA
  • the RNA (preferably mRNA) used in the present disclosure contains a combination of at least two, at least three, at least four or all five of the above-mentioned modifications, i.e., (i) incorporation of a 5'-cap structure, (ii) incorporation of a poly- A sequence, unmasking of a poly-A sequence; (iii) alteration of the 5'- and/or 3'-UTR (such as incorporation of one or more 3'-UTRs); (iv) replacing one or more naturally occurring nucleotides with synthetic nucleotides (e.g., 5-methylcytidine for cytidine and/or pseudouridine (Y) or N(l)- methylpseudouridine (m 1 Y) or 5-methyluridine (m5U) for uridine), and (v) cod
  • the RNA comprises a capl or cap2, preferably a capl structure.
  • the poly-A sequence comprises at least 100 nucleotides.
  • the poly-A sequence comprises or consists of the nucleotide sequence of SEQ ED NO: 14.
  • the a 5’ UTR comprising the nucleotide sequence of SEQ ID NO: 12, or a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 12.
  • the 3’ UTR comprising the nucleotide sequence of SEQ ID NO: 13, or a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 13.
  • RNA preferably mRNA
  • the disclosure involves targeting the lymphatic system, in particular secondary lymphoid organs, more specifically spleen.
  • RNA preferably mRNA
  • the target cell is a spleen cell.
  • the target cell is an antigen presenting cell such as a professional antigen presenting cell in the spleen.
  • the target cell is a dendritic cell in the spleen.
  • the "lymphatic system" is part of the circulatory system and an important part of the immune system, comprising a network of lymphatic vessels that carry lymph.
  • the lymphatic system consists of lymphatic organs, a conducting network of lymphatic vessels, and the circulating lymph.
  • the primary or central lymphoid organs generate lymphocytes from immature progenitor cells.
  • the thymus and the bone marrow constitute the primary lymphoid organs.
  • Secondary or peripheral lymphoid organs which include lymph nodes and the spleen, maintain mature naive lymphocytes and initiate an adaptive immune response.
  • Lipid-based RNA (such as mRNA) delivery systems have an inherent preference to the liver. Liver accumulation is caused by the discontinuous nature of the hepatic vasculature or the lipid metabolism (liposomes and lipid or cholesterol conjugates).
  • the target organ is liver and the target tissue is liver tissue.
  • the delivery to such target tissue is preferred, in particular, if presence of mRNA or of the encoded peptide or protein in this organ or tissue is desired and/or if it is desired to express large amounts of the encoded peptide or protein and/or if systemic presence of the encoded peptide or protein, in particular in significant amounts, is desired or required.
  • the RNA is delivered to a target cell or target organ. In one embodiment, at least a portion of the RNA is delivered to the cytosol of the target cell. In one embodiment, the RNA is RNA (preferably mRNA) encoding a peptide or protein and the RNA is translated by the target cell to produce the peptide or protein. In one embodiment, the target cell is a cell in the liver. In one embodiment, the target cell is a muscle cell. In one embodiment, the target cell is an endothelial cell. In one embodiment the target cell is a tumor cell or a cell in the tumor microenvironment. In one embodiment, the target cell is a blood cell.
  • RNA RNA (preferably mRNA) encoding a peptide or protein and the RNA is translated by the target cell to produce the peptide or protein.
  • the target cell is a cell in the liver. In one embodiment, the target cell is a muscle cell. In one embodiment, the target cell is an endothelial cell. In one embodiment the target cell is
  • the target cell is a cell in the lymph nodes. In one embodiment, the target cell is a cell in the lung. In one embodiment, the target cell is a blood cell. In one embodiment, the target cell is a cell in the skin. In one embodiment, the target cell is a spleen cell. In one embodiment, the target cell is an antigen presenting cell such as a professional antigen presenting cell in the spleen. In one embodiment, the target cell is a dendritic cell in the spleen. In one embodiment, the target cell is a T cell. In one embodiment, the target cell is a B cell. In one embodiment, the target cell is a NK cell. In one embodiment, the target cell is a monocyte.
  • RNA LNP compositions described herein may be used for delivering RNA (preferably mRNA) to such target cell.
  • the present disclosure also relates to a method for delivering RNA (preferably mRNA) to a target cell in a subject comprising the administration of the RNA LNP compositions described herein to the subject.
  • the RNA is delivered to the cytosol of the target cell.
  • the RNA is RNA (preferably mRNA) encoding a peptide or protein and the RNA is translated by the target cell to produce the peptide or protein.
  • Encoding refers to the inherent property of specific sequences of nucleotides in a polynucleotide, such as a gene, a cDNA, or an RNA (preferably mRNA), to serve as templates for synthesis of other polymers and macromolecules in biological processes having either a defined sequence of nucleotides (i.e., rRNA, tRNA and mRNA) or a defined sequence of amino acids and the biological properties resulting therefrom.
  • a gene encodes a protein if transcription and translation of RNA (preferably mRNA) corresponding to that gene produces the protein in a cell or other biological system.
  • Both the coding strand, the nucleotide sequence of which is identical to the RNA sequence and is usually provided in sequence listings, and the non-coding strand, used as the template for transcription of a gene or cDNA, can be referred to as encoding the protein or other product of that gene or cDNA.
  • a nucleic acid sequence e.g., an ORF
  • polypeptides e.g., a peptide or protein, preferably a pharmaceutically active peptide or protein.
  • RNA (preferably mRNA) used in the present disclosure comprises a nucleic acid sequence (e.g., an ORF) encoding a peptide or protein, preferably a pharmaceutically active peptide or protein, and is capable of expressing said peptide or protein, in particular if transferred into a cell or subject.
  • the RNA (preferably mRNA) used in the present disclosure preferably contains a coding region (ORF) encoding a peptide or protein, preferably encoding a pharmaceutically active peptide or protein.
  • ORF coding region
  • an "open reading frame” or “ORF” is a continuous stretch of codons beginning with a start codon and ending with a stop codon.
  • Such RNA (preferably mRNA) encoding a pharmaceutically active peptide or protein is also referred to herein as “pharmaceutically active RNA” (or “pharmaceutically active mRNA”).
  • the term "pharmaceutically active peptide or protein” means a peptide or protein that can be used in the treatment of an individual where the expression of a peptide or protein would be of benefit, e.g., in ameliorating the symptoms of a disease or disorder.
  • a pharmaceutically active peptide or protein has curative or palliative properties and may be administered to ameliorate, relieve, alleviate, reverse, delay onset of or lessen the severity of one or more symptoms of a disease or disorder.
  • a pharmaceutically active peptide or protein has a positive or advantageous effect on the condition or disease state of an individual when administered to the individual in a therapeutically effective amount.
  • a pharmaceutically active peptide or protein may have prophylactic properties and may be used to delay the onset of a disease or disorder or to lessen the severity of such disease or disorder.
  • pharmaceutically active peptide or protein includes entire proteins or polypeptides, and can also refer to pharmaceutically active fragments thereof. It can also include pharmaceutically active analogs of a peptide or protein.
  • pharmaceutically active peptides and proteins include, but are not limited to, cytokines, hormones, adhesion molecules, immunoglobulins, immunologically active compounds, growth factors, protease inhibitors, enzymes, receptors, apoptosis regulators, transcription factors, tumor suppressor proteins, structural proteins, reprogramming factors, genomic engineering proteins, and blood proteins.
  • cytokines relates to proteins which have a molecular weight of about 5 to 20 kDa and which participate in cell signaling (e.g ., paracrine, endocrine, and/or autocrine signaling). In particular, when released, cytokines exert an effect on the behavior of cells around the place of their release. Examples of cytokines include lymphokines, interleukins, chemokines, interferons, and tumor necrosis factors (TNFs). According to the present disclosure, cytokines do not include hormones or growth factors.
  • Cytokines differ from hormones in that (i) they usually act at much more variable concentrations than hormones and (ii) generally are made by a broad range of cells (nearly all nucleated cells can produce cytokines).
  • Interferons are usually characterized by antiviral, antiproliferative and immunomodulatory activities. Interferons are proteins that alter and regulate the transcription of genes within a cell by binding to interferon receptors on the regulated cell's surface, thereby preventing viral replication within the cells. The interferons can be grouped into two types. IFN-gamma is the sole type II interferon; all others are type I interferons.
  • cytokines include erythropoietin (EPO), colony stimulating factor (CSF), granulocyte colony stimulating factor (G-CSF), granulocyte-macrophage colony stimulating factor (GM-CSF), tumor necrosis factor (TNF), bone morphogenetic protein (BMP), interferon alfa (IFNa), interferon beta (IFNf3), interferon gamma (INRg), interleukin 2 (IL-2), interleukin 4 (IL-4), interleukin 10 (IL-10), interleukin 11 (IL-11), interleukin 12 (IL-12), and interleukin 21 (IL- 21).
  • EPO erythropoietin
  • CSF colony stimulating factor
  • G-CSF granulocyte colony stimulating factor
  • GM-CSF granulocyte-macrophage colony stimulating factor
  • TNF tumor necrosis factor
  • BMP bone morphogenetic protein
  • IFNa interferon alfa
  • a pharmaceutically active peptide or protein comprises a replacement protein.
  • the present disclosure provides a method for treatment of a subject having a disorder requiring protein replacement (e.g., protein deficiency disorders) comprising administering to the subject RNA as described herein encoding a replacement protein.
  • protein replacement refers to the introduction of a protein (including functional variants thereof) into a subject having a deficiency in such protein.
  • the term also refers to the introduction of a protein into a subject otherwise requiring or benefiting from providing a protein, e.g., suffering from protein insufficiency.
  • disorder characterized by a protein deficiency refers to any disorder that presents with a pathology caused by absent or insufficient amounts of a protein. This term encompasses protein folding disorders, i.e., conformational disorders, that result in a biologically inactive protein product. Protein insufficiency can be involved in infectious diseases, immunosuppression, organ failure, glandular problems, radiation illness, nutritional deficiency, poisoning, or other environmental or external insults.
  • hormones relates to a class of signaling molecules produced by glands, wherein signaling usually includes the following steps: (i) synthesis of a hormone in a particular tissue; (ii) storage and secretion; (iii) transport of the hormone to its target; (iv) binding of the hormone by a receptor; (v) relay and amplification of the signal; and (vi) breakdown of the hormone.
  • Hormones differ from cytokines in that (1) hormones usually act in less variable concentrations and (2) generally are made by specific kinds of cells.
  • a "hormone” is a peptide or protein hormone, such as insulin, vasopressin, prolactin, adrenocorticotropic hormone (ACTH), thyroid hormone, growth hormones (such as human grown hormone or bovine somatotropin), oxytocin, atrial-natriuretic peptide (ANP), glucagon, somatostatin, cholecystokinin, gastrin, and leptins.
  • Adhesion molecules relates to proteins which are located on the surface of a cell and which are involved in binding of the cell with other cells or with the extracellular matrix (ECM).
  • Adhesion molecules are typically transmembrane receptors and can be classified as calcium-independent (e.g., integrins, immunoglobulin superfamily, lymphocyte homing receptors) and calcium-dependent (cadherins and selectins).
  • Particular examples of adhesion molecules are integrins, lymphocyte homing receptors, selectins (e.g., P-selectin), and addressins.
  • Integrins are also involved in signal transduction.
  • integrins upon ligand binding, integrins modulate cell signaling pathways, e.g., pathways of transmembrane protein kinases such as receptor tyrosine kinases (RTK).
  • RTK receptor tyrosine kinases
  • integrins include: aibi, a2bi, o ⁇ bi, afi, a5bi, a 6 bi, a?bi, ai,b?, a M b2, aip > b3, anbi, anb3, anb5, a n b&, a n bd, and a 6 b4.
  • immunoglobulins or “immunoglobulin superfamily” refers to molecules which are involved in the recognition, binding, and/or adhesion processes of cells. Molecules belonging to this superfamily share the feature that they contain a region known as immunoglobulin domain or fold.
  • immunoglobulin superfamily include antibodies (e.g., IgG), T cell receptors (TCRs), major histocompatibility complex (MHC) molecules, co-receptors (e.g., CD4, CD8, CD19), antigen receptor accessory molecules (e.g., CD-3y, CD3-8, CD-3s, CD79a, CD79b), co-stimulatory or inhibitory molecules (e.g., CD28, CD80, CD86), and other.
  • immunoglobulin superfamily include antibodies (e.g., IgG), T cell receptors (TCRs), major histocompatibility complex (MHC) molecules, co-receptors (e.g., CD4, CD8, CD19), antigen receptor accessory molecules (e.g., CD-3y, CD3-8, CD-3s, CD79a, CD79b), co-stimulatory or inhibitory molecules (e.g., CD28, CD80, CD86), and other.
  • immunoglobulin superfamily include antibodies (e.g., Ig
  • Immunologically active compounds possess potent immunostimulating activity including, but not limited to, antiviral and antitumor activity, and can also down-regulate other aspects of the immune response, for example shifting the immune response away from a TH2 immune response, which is useful for treating a wide range of TH2 mediated diseases. Immunologically active compounds can be useful as vaccine adjuvants.
  • immunologically active compounds include interleukins, colony stimulating factor (CSF), granulocyte colony stimulating factor (G-CSF), granulocyte- macrophage colony stimulating factor (GM-CSF), erythropoietin, tumor necrosis factor (TNF), interferons, integrins, addressins, selectins, homing receptors, and antigens, in particular tumor- associated antigens, pathogen-associated antigens (such as bacterial, parasitic, or viral antigens), allergens, and autoantigens.
  • a preferred immunologically active compound is a vaccine antigen, i.e., an antigen whose inoculation into a subject induces an immune response.
  • autoantigen or "self-antigen” refers to an antigen which originates from within the body of a subject (i.e., the autoantigen can also be called “autologous antigen") and which produces an abnormally vigorous immune response against this normal part of the body. Such vigorous immune reactions against autoantigens maybe the cause of "autoimmune diseases”.
  • allergen refers to a kind of antigen which originates from outside the body of a subject (i.e., the allergen can also be called “heterologous antigen”) and which produces an abnormally vigorous immune response in which the immune system of the subject fights off a perceived threat that would otherwise be harmless to the subject.
  • allergen usually is an antigen which is able to stimulate a type-I hypersensitivity reaction in atopic individuals through immunoglobulin E (IgE) responses.
  • IgE immunoglobulin E
  • allergens include allergens derived from peanut proteins (e.g., Ara h 2.02), ovalbumin, grass pollen proteins (e.g., Phi p 5), and proteins of dust mites (e.g., Der p 2).
  • peanut proteins e.g., Ara h 2.02
  • ovalbumin e.g., ovalbumin
  • grass pollen proteins e.g., Phi p 5
  • proteins of dust mites e.g., Der p 2
  • growth factors refers to molecules which are able to stimulate cellular growth, proliferation, healing, and/or cellular differentiation. Typically, growth factors act as signaling molecules between cells.
  • growth factors include particular cytokines and hormones which bind to specific receptors on the surface of their target cells.
  • growth factors examples include bone morphogenetic proteins (BMPs), fibroblast growth factors (FGFs), vascular endothelial growth factors (VEGFs), such as VEGFA, epidermal growth factor (EGF), insulin-like growth factor, ephrins, macrophage colony- stimulating factor, granulocyte colony-stimulating factor, granulocyte macrophage colony-stimulating factor, neuregulins, neurotrophins (e.g., brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF)), placental growth factor (PGF), platelet-derived growth factor (PDGF), renalase (RNLS) (anti- apoptotic survival factor), T-cell growth factor (TCGF), thrombopoietin (TPO), transforming growth factors (transforming growth factor alpha (TGF-a), transforming growth factor beta (TGF-b)), and tumor necrosis factor-alpha (TNF-a).
  • BMPs bone morphogenetic proteins
  • protease inhibitors refers to molecules, in particular peptides or proteins, which inhibit the function of proteases.
  • Protease inhibitors can be classified by the protease which is inhibited (e.g., aspartic protease inhibitors) or by their mechanism of action (e.g., suicide inhibitors, such as serpins).
  • protease inhibitors include serpins, such as alpha 1 -antitrypsin, aprotinin, and bestatin.
  • enzymes refers to macromolecular biological catalysts which accelerate chemical reactions. Like any catalyst, enzymes are not consumed in the reaction they catalyze and do not alter the equilibrium of said reaction. Unlike many other catalysts, enzymes are much more specific.
  • an enzyme is essential for homeostasis of a subject, e.g., any malfunction (in particular, decreased activity which may be caused by any of mutation, deletion or decreased production) of the enzyme results in a disease.
  • examples of enzymes include herpes simplex virus type 1 thymidine kinase (HSV1-TK), hexosaminidase, phenylalanine hydroxylase, pseudocholinesterase, and lactase.
  • receptors refers to protein molecules which receive signals (in particular chemical signals called ligands) from outside a cell.
  • signals in particular chemical signals called ligands
  • the binding of a signal (e.g., ligand) to a receptor causes some kind of response of the cell, e.g., the intracellular activation of a kinase.
  • Receptors include transmembrane receptors (such as ion channel-linked (ionotropic) receptors, G protein-linked (metabotropic) receptors, and enzyme-linked receptors) and intracellular receptors (such as cytoplasmic receptors and nuclear receptors).
  • receptors include steroid hormone receptors, growth factor receptors, and peptide receptors (i.e., receptors whose ligands are peptides), such as P-selectin glycoprotein ligand- 1 (PSGL-1).
  • PSGL-1 P-selectin glycoprotein ligand- 1
  • growth factor receptors refers to receptors which bind to growth factors.
  • apoptosis regulators refers to molecules, in particular peptides or proteins, which modulate apoptosis, i.e., which either activate or inhibit apoptosis.
  • Apoptosis regulators can be grouped into two broad classes: those which modulate mitochondrial function and those which regulate caspases.
  • the first class includes proteins (e.g., BCL-2, BCL-xL) which act to preserve mitochondrial integrity by preventing loss of mitochondrial membrane potential and/or release of pro-apoptotic proteins such as cytochrome C into the cytosol.
  • proapoptotic proteins e.g., BAX, BAK, BGM
  • the second class includes proteins such as the inhibitors of apoptosis proteins (e.g ., XIAP) or FLIP which block the activation of caspases.
  • transcription factors relates to proteins which regulate the rate of transcription of genetic information from DNA to messenger RNA, in particular by binding to a specific DNA sequence. Transcription factors may regulate cell division, cell growth, and cell death throughout life; cell migration and organization during embryonic development; and/or in response to signals from outside the cell, such as a hormone. Transcription factors contain at least one DNA-binding domain which binds to a specific DNA sequence, usually adjacent to the genes which are regulated by the transcription factors. Particular examples of transcription factors include MECP2, FOXP2, FOXP3, the ST AT protein family, and the HOX protein family.
  • tumor suppressor proteins relates to molecules, in particular peptides or proteins, which protect a cell from one step on the path to cancer.
  • Tumor-suppressor proteins (usually encoded by corresponding tumor-suppressor genes) exhibit a weakening or repressive effect on the regulation of the cell cycle and/or promote apoptosis.
  • Their functions may be one or more of the following: repression of genes essential for the continuing of the cell cycle; coupling the cell cycle to DNA damage (as long as damaged DNA is present in a cell, no cell division should take place); initiation of apoptosis, if the damaged DNA cannot be repaired; metastasis suppression ⁇ e.g., preventing tumor cells from dispersing, blocking loss of contact inhibition, and inhibiting metastasis); and DNA repair.
  • tumor-suppressor proteins include p53, phosphatase and tensin homolog (PTEN), SWFSNF (SWItch/Sucrose Non-Fermentable), von Hippel-Lindau tumor suppressor (pVHL), adenomatous polyposis coli (APC), CD95, suppression of tumorigenicity 5 (ST5), suppression of tumorigenicity 5 (ST5), suppression of tumorigenicity 14 (ST14), and Yippee-like 3 (YPEL3).
  • PTEN phosphatase and tensin homolog
  • SWFSNF SWFSNF
  • pVHL von Hippel-Lindau tumor suppressor
  • APC adenomatous polyposis coli
  • CD95 suppression of tumorigenicity 5
  • ST5 suppression of tumorigenicity 5
  • ST5 suppression of tumorigenicity 5
  • ST14 suppression of tumorigenicity 14
  • YPEL3 Yippee-like 3
  • structural proteins refers to proteins which confer stiffness and rigidity to otherwise-fluid biological components. Structural proteins are mostly fibrous (such as collagen and elastin) but may also be globular (such as actin and tubulin). Usually, globular proteins are soluble as monomers, but polymerize to form long, fibers which, for example, may make up the cytoskeleton. Other structural proteins are motor proteins (such as myosin, kinesin, and dynein) which are capable of generating mechanical forces, and surfactant proteins. Particular examples of structural proteins include collagen, surfactant protein A, surfactant protein B, surfactant protein C, surfactant protein D, elastin, tubulin, actin, and myosin.
  • reprogramming factors or "reprogramming transcription factors” relates to molecules, in particular peptides or proteins, which, when expressed in somatic cells optionally together with further agents such as further reprogramming factors, lead to reprogramming or de-differentiation of said somatic cells to cells having stem cell characteristics, in particular pluripotency.
  • reprogramming factors include OCT4, SOX2, c-MYC, KLF4, LIN28, and NANOG.
  • genomic engineering proteins relates to proteins which are able to insert, delete or replace DNA in the genome of a subject.
  • genomic engineering proteins include meganucleases, zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and clustered regularly spaced short palindromic repeat-CRISPR-associated protein 9 (CRISPR-Cas9).
  • blood proteins relates to peptides or proteins which are present in blood plasma of a subject, in particular blood plasma of a healthy subject.
  • Blood proteins have diverse functions such as transport (e.g., albumin, transferrin), enzymatic activity (e.g., thrombin or ceruloplasmin), blood clotting (e.g., fibrinogen), defense against pathogens (e.g., complement components and immunoglobulins), protease inhibitors (e.g., alpha 1 -antitrypsin), etc.
  • blood proteins include thrombin, serum albumin, Factor VII, Factor VIII, insulin, Factor IX, Factor X, tissue plasminogen activator, protein C, von Willebrand factor, antithrombin III, glucocerebrosidase, erythropoietin, granulocyte colony stimulating factor (G-CSF), modified Factor VIII, and anticoagulants.
  • the pharmaceutically active peptide or protein is (i) a cytokine, preferably selected from the group consisting of erythropoietin (EPO), interleukin 4 (DL-2), and interleukin 10 (IL- 11), more preferably EPO; (ii) an adhesion molecule, in particular an integrin; (iii) an immunoglobulin, in particular an antibody; (iv) an immunologically active compound, in particular an antigen; (v) a hormone, in particular vasopressin, insulin or growth hormone; (vi) a growth factor, in particular VEGFA; (vii) a protease inhibitor, in particular alpha 1 -antitrypsin; (viii) an enzyme, preferably selected from the group consisting of herpes simplex virus type 1 thymidine kinase (HSV1-TK), hexosaminidase, phenylalanine hydroxylase, pseudocholinesterase, pancreatic enzymes
  • EPO
  • a pharmaceutically active peptide or protein comprises one or more antigens or one or more epitopes, i.e., administration of the peptide or protein to a subject elicits an immune response against the one or more antigens or one or more epitopes in a subject which may be therapeutic or partially or fully protective.
  • the RNA preferably mRNA encodes at least one epitope.
  • the epitope is derived from a tumor antigen.
  • the tumor antigen may be a "standard” antigen, which is generally known to be expressed in various cancers.
  • the tumor antigen may also be a "neo-antigen", which is specific to an individual’s tumor and has not been previously recognized by the immune system.
  • a neo-antigen or neo-epitope may result from one or more cancer- specific mutations in the genome of cancer cells resulting in amino acid changes.
  • tumor antigens include, without limitation, p53, ART-4, BAGE, beta-cat enin/m, Bcr-abL CAMEL, CAP-1 , CASP-8, CDC27/m, CDK4/m, CEA, the cell surface proteins of the claudin family, such as CLAUD GN-6, CLAUDIN- 18.2 and CLAUDIN-12, c-MYC, CT, Cyp-B, DAM, ELF2M, ETV6-AML1, G250, GAGE, GnT-V, Gap 100, HAGE, HER-2/neu, HPV-E7, HPV-E6, HAST-2, hTERT (or hTRT), LAGE, LDLR/FUT, MAGE-A, preferably MAGE-A1 , MAGE-A2, MAGE- A3, MAGE-A4, MAGE-A5, MAGE-A6, MAGE-A7, MAGE-A8, MAGE-A9, MAGE-A 10, MAGE-A 1 1
  • Dendritic cells (DCs) residing in the spleen represent antigen-presenting cells of particular interest for RNA expression of immunogenic epitopes or antigens such as tumor epitopes. The use of multiple epitopes has been shown to promote therapeutic efficacy in tumor vaccine compositions.
  • Rapid sequencing of the tumor mutanome may provide multiple epitopes for individualized vaccines which can be encoded by mRNA described herein, e.g., as a single polypeptide wherein the epitopes are optionally separated by linkers.
  • the mRNA encodes at least one epitope, at least two epitopes, at least three epitopes, at least four epitopes, at least five epitopes, at least six epitopes, at least seven epitopes, at least eight epitopes, at least nine epitopes, or at least ten epitopes.
  • Exemplary embodiments include mRNA that encodes at least five epitopes (termed a "pentatope") and mRNA that encodes at least ten epitopes (termed a "decatope").
  • the epitope is derived from a pathogen-associated antigen, in particular from a viral antigen. In one embodiment, the epitope is derived from a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof.
  • the RNA (preferably mRNA) used in the present disclosure encodes an amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof
  • the RNA comprises an ORF encoding a full-length SARS-CoV2 S protein variant with proline residue substitutions at positions 986 and 987 of SEQ ID NO: 1.
  • the SARS- CoV2 S protein variant has at least 80% identity (such as at least 85% identity, at least 90% identity, at least 91% identity, at least 92% identity, at least 93% identity, at least 94% identity, at least 95% identity, at least 96% identity, at least 97% identity, at least 98% identity, or at least 99% identity) to SEQ ID NO:7.
  • an immunogenic fragment of the SARS-CoV-2 S protein comprises the SI subunit of the SARS-CoV-2 S protein, or the receptor binding domain (RBD) of the SI subunit of the SARS- CoV-2 S protein.
  • the RNA e.g., mRNA
  • the RNA used in the present disclosure comprises an open reading frame encoding a polypeptide that comprises a receptor-binding portion of a SARS- CoV-2 S protein, which RNA is suitable for intracellular expression of the polypeptide.
  • such an encoded polypeptide does not comprise the complete S protein.
  • the encoded polypeptide comprises the receptor binding domain (RBD), for example, as shown in SEQ ID NO: 5.
  • the encoded polypeptide comprises the peptide according to SEQ ID NO: 29 or 31.
  • the amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is able to form a multimeric complex, in particular a trimeric complex.
  • the amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof may comprise a domain allowing the formation of a multimeric complex, in particular a trimeric complex of the amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof.
  • the domain allowing the formation of a multimeric complex comprises a trimerization domain, for example, a trimerization domain as described herein.
  • the trimerization domain as defined herein includes, without being limited thereto, a sequence comprising the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10 or a functional variant thereof. In one embodiment, the trimerization domain as defined herein includes, without being limited thereto, a sequence comprising the amino acid sequence of SEQ ID NO: 10 or a functional variant thereof.
  • a trimerization domain comprises the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10, or a functional fragment of the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10.
  • a trimerization domain comprises the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10.
  • RNA encoding a trimerization domain comprises the nucleotide sequence of nucleotides 7 to 87 of SEQ ID NO: 11, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 7 to 87 of SEQ ID NO: 11, or a fragment of the nucleotide sequence of nucleotides 7 to 87 of SEQ ID NO: 11, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 7 to 87 of SEQ ID NO: 11; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80%
  • RNA encoding a trimerization domain comprises the nucleotide sequence of nucleotides 7 to 87 of SEQ ID NO: 11 ; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10.
  • the RBD antigen expressed by an RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof can be modified by addition of a T4-fibritin- derived "foldon" trimerization domain, for example, to increase its immunogenicity.
  • the amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is encoded by a coding sequence which is codon-optimized and/or the G/C content of which is increased compared to wild type coding sequence, wherein the codon-optimization and/or the increase in the G/C content preferably does not change the sequence of the encoded amino acid sequence.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the nucleotide sequence of nucleotides 979 to 1584 of SEQ ID NO: 2, 8 or 9, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 979 to 1584 of SEQ ID NO: 2, 8 or 9, or a fragment of the nucleotide sequence of nucleotides 979 to 1584 of SEQ ID NO: 2, 8 or 9, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 979 to 1584 of SEQ ID NO: 2, 8 or 9; and/or
  • a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the amino acid sequence of amino acids 327 to 528 of SEQ ID NO: 1 , an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 327 to 528 of SEQ ED NO: 1, or an immunogenic fragment of the amino acid sequence of amino acids 327 to 528 of SEQ ID NO: 1, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 327 to 528 of SEQ ID NO: 1.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the nucleotide sequence of nucleotides 49 to 2055 of SEQ ID NO: 2, 8 or 9, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 49 to 2055 of SEQ ED NO: 2, 8 or 9, or a fragment of the nucleotide sequence of nucleotides 49 to 2055 of SEQ ID NO: 2, 8 or 9, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 49 to 2055 of SEQ ED NO: 2, 8 or 9; and/or
  • a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV -2 S protein or the immunogenic variant thereof comprises the amino acid sequence of amino acids 17 to 685 of SEQ ED NO: 1, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 17 to 685 of SEQ ID NO: 1, or an immunogenic fragment of the amino acid sequence of amino acids 17 to 685 of SEQ ID NO: 1, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 17 to 685 of SEQ ID NO: 1.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the nucleotide sequence of nucleotides 49 to 3819 of SEQ ID NO: 2, 8 or 9, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 49 to 3819 of SEQ ID NO: 2, 8 or 9, or a fragment of the nucleotide sequence of nucleotides 49 to 3819 of SEQ ID NO: 2, 8 or 9, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 49 to 3819 of SEQ ID NO: 2, 8 or 9; and/or
  • a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the S ARS-Co V -2 S protein or the immunogenic variant thereof comprises the amino acid sequence of amino acids 17 to 1273 of SEQ ID NO: 1 or 7, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 17 to 1273 of SEQ ID NO: 1 or 7, or an immunogenic fragment of the amino acid sequence of amino acids 17 to 1273 of SEQ ID NO: 1 or 7, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 17 to 1273 of SEQ ID NO: 1 or 7.
  • the amino acid sequence comprising a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises a secretory signal peptide.
  • the secretory signal peptide is fused, preferably N -terminally, to a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof.
  • the RNA encoding the secretory signal peptide comprises the nucleotide sequence of nucleotides 1 to 48 of SEQ DD NO: 2, 8 or 9, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 1 to 48 of SEQ ID NO: 2, 8 or 9, or a fragment of the nucleotide sequence of nucleotides 1 to 48 of SEQ ID NO: 2, 8 or 9, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 1 to 48 of SEQ ID NO: 2, 8 or 9; and/or
  • the secretory signal peptide comprises the amino acid sequence of amino acids 1 to 16 of SEQ ID NO: 1, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 16 of SEQ ID NO: 1, or a functional fragment of the amino acid sequence of amino acids 1 to 16 of SEQ ID NO: 1, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 16 of SEQ ID NO: 1.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the nucleotide sequence of SEQ ID NO: 6, a nucleotide sequence having at least 99%,
  • nucleotide sequence of SEQ ID NO: 6 or a fragment of the nucleotide sequence of SEQ ID NO: 6, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 6; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 5, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ED NO: 5, or an immunogenic fragment of the amino acid sequence of SEQ ID NO: 5, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 5.
  • (i) comprises the nucleotide sequence of SEQ ID NO: 4, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 4, or a fragment of the nucleotide sequence of SEQ ED NO: 4, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 4; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 3, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 3, or an immunogenic fragment of the amino acid sequence of SEQ ID NO: 3, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 3.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of SEQ ED NO: 4; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 3.
  • nucleotide sequence of nucleotides 54 to 716 of SEQ ED NO: 30 comprises the nucleotide sequence of nucleotides 54 to 716 of SEQ ED NO: 30, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 716 of SEQ ID NO: 30, or a fragment of the nucleotide sequence of nucleotides 54 to 716 of SEQ ID NO: 30, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 716 of SEQ ID NO: 30; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 221 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 221 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 1 to 221 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 221 of SEQ ID NO: 29.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 54 to 716 of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 221 of SEQ ID NO: 29.
  • nucleotide sequence of nucleotides 54 to 725 of SEQ ID NO: 32 comprises the nucleotide sequence of nucleotides 54 to 725 of SEQ ID NO: 32, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 725 of SEQ ID NO: 32, or a fragment of the nucleotide sequence of nucleotides 54 to 725 of SEQ ID NO: 32, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 725 of SEQ ID NO: 32; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 224 of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 224 of SEQ ID NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 1 to 224 of SEQ ID NO: 31 , or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 224 of SEQ ID NO: 31.
  • (i) comprises the nucleotide sequence of SEQ ID NO: 17, 21 , or 26, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 17, 21, or 26, or a fragment of the nucleotide sequence of SEQ ID NO: 17, 21, or 26, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 17, 21 , or 26; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 5, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 5, or an immunogenic fragment of the amino acid sequence of SEQ ED NO: 5, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 5.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of SEQ ID NO: 17, 21, or 26; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 5.
  • a vaccine antigen comprises the amino acid sequence of SEQ ID NO: 18, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 18, or an immunogenic fragment of the amino acid sequence of SEQ ID NO: 18, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 18.
  • a vaccine antigen comprises the amino acid sequence of SEQ ID NO: 18.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29.
  • nucleotide sequence of nucleotides 54 to 824 of SEQ ID NO: 30 comprises the nucleotide sequence of nucleotides 54 to 824 of SEQ ID NO: 30, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 824 of SEQ ID NO: 30, or a fragment of the nucleotide sequence of nucleotides 54 to 824 of SEQ ID NO: 30, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 824 of SEQ ID NO: 30; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 54 to 824 of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 257 of SEQ ID NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 260 of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 260 of SEQ ID NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 1 to 260 of SEQ ED NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 260 of SEQ ID NO: 31.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 260 of SEQ ED NO: 31.
  • nucleotide sequence of nucleotides 54 to 833 of SEQ ID NO: 32 comprises the nucleotide sequence of nucleotides 54 to 833 of SEQ ID NO: 32, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 833 of SEQ ID NO: 32, or a fragment of the nucleotide sequence of nucleotides 54 to 833 of SEQ ID NO: 32, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 833 of SEQ ID NO: 32; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 260 of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 260 of SEQ ID NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 1 to 260 of SEQ ED NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 260 of SEQ ID NO: 31.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 54 to 833 of SEQ ID NO: 32; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 260 of SEQ ID NO: 31.
  • a vaccine antigen comprises the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29.
  • nucleotide sequence of nucleotides 111 to 824 of SEQ ID NO: 30 comprises the nucleotide sequence of nucleotides 111 to 824 of SEQ ID NO: 30, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 111 to 824 of SEQ ID NO: 30, or a fragment of the nucleotide sequence of nucleotides 111 to 824 of SEQ ID NO: 30, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 111 to 824 of SEQ ID NO: 30; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29.
  • RNA encoding a vaccine antigen comprises the nucleotide sequence of nucleotides 111 to 824 of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 20 to 257 of SEQ ID NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 23 to 260 of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 23 to 260 of SEQ ID NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 23 to 260 of SEQ ID NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 23 to 260 of SEQ ID NO: 31.
  • a vaccine antigen comprises the amino acid sequence of amino acids 23 to 260 of SEQ ED NO: 31.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the nucleotide sequence of nucleotides 120 to 833 of SEQ ID NO: 32, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 120 to 833 of SEQ ID NO: 32, or a fragment of the nucleotide sequence of nucleotides 120 to 833 of SEQ ID NO: 32, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 120 to 833 of SEQ ID NO: 32; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 23 to 260
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 120 to 833 of SEQ ID NO: 32; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 23 to 260 of SEQ ID NO: 31.
  • a transmembrane domain is fused, either directly or through a linker, e.g., a glycine/serine linker, to a SARS-CoV-2 S protein, a variant thereof, or a fragment thereof, i.e., the antigenic peptide or protein.
  • a transmembrane domain is fused to the above described amino acid sequences derived from SARS-CoV-2 S protein or immunogenic fragments thereof (antigenic peptides or proteins) comprised by the vaccine antigens described above (which may optionally be fused to a signal peptide and/or trimerization domain as described above).
  • transmembrane domains are preferably located at the C-terminus of the antigenic peptide or protein, without being limited thereto.
  • such transmembrane domains are located at the C- terminus of the trimerization domain, if present, without being limited thereto.
  • a trimerization domain is present between the SARS-CoV-2 S protein, a variant thereof, or a fragment thereof, i.e., the antigenic peptide or protein, and the transmembrane domain.
  • Transmembrane domains as defined herein preferably allow the anchoring into a cellular membrane of the antigenic peptide or protein as encoded by the RNA.
  • the transmembrane domain sequence as defined herein includes, without being limited thereto, the transmembrane domain sequence of S ARS-CoV -2 S protein, in particular a sequence comprising the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1 or a functional variant thereof.
  • a transmembrane domain sequence comprises the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1, or a functional fragment of the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1 , or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1.
  • a transmembrane domain sequence comprises the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1.
  • RNA encoding a transmembrane domain sequence comprises the nucleotide sequence of nucleotides 3619 to 3762 of SEQ ID NO: 2, 8 or 9, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 3619 to 3762 of SEQ ID NO: 2, 8 or 9, or a fragment of the nucleotide sequence of nucleotides 3619 to 3762 of SEQ ID NO: 2, 8 or 9, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 3619 to 3762 of SEQ ID NO: 2, 8 or 9; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1, an amino acid sequence having at least 99%
  • RNA encoding a transmembrane domain sequence (i) comprises the nucleotide sequence of nucleotides 3619 to 3762 of SEQ ID NO: 2, 8 or 9; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29.
  • nucleotide sequence of nucleotides 54 to 986 of SEQ ID NO: 30 comprises the nucleotide sequence of nucleotides 54 to 986 of SEQ ID NO: 30, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 986 of SEQ ID NO: 30, or a fragment of the nucleotide sequence of nucleotides 54 to 986 of SEQ ID NO: 30, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 986 of SEQ ID NO: 30; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 1 to 311 of SEQ ED NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 54 to 986 of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 311 of SEQ ID NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 314 of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 314 of SEQ ID NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 1 to 314 of SEQ ID NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 314 of SEQ ED NO: 31.
  • a vaccine antigen comprises the amino acid sequence of amino acids 1 to 314 of SEQ ID NO: 31.
  • nucleotide sequence of nucleotides 54 to 995 of SEQ ID NO: 32 comprises the nucleotide sequence of nucleotides 54 to 995 of SEQ ID NO: 32, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 995 of SEQ ED NO: 32, or a fragment of the nucleotide sequence of nucleotides 54 to 995 of SEQ ID NO: 32, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 54 to 995 of SEQ ED NO: 32; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 314 of SEQ ED NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 314 of SEQ ED NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 1 to 314 of SEQ ED NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 1 to 314 of SEQ ED NO: 31.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 54 to 995 of SEQ ID NO: 32; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 314 of SEQ ID NO: 31.
  • a vaccine antigen comprises the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29.
  • nucleotide sequence of nucleotides 111 to 986 of SEQ ID NO: 30 comprises the nucleotide sequence of nucleotides 111 to 986 of SEQ ID NO: 30, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 111 to 986 of SEQ ID NO: 30, or a fragment of the nucleotide sequence of nucleotides 111 to 986 of SEQ ID NO: 30, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 111 to 986 of SEQ ID NO: 30; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 20 to 311 of SEQ ID NO: 29.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 111 to 986 of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 20 to 311 of SEQ ED NO: 29.
  • a vaccine antigen comprises the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 23 to 314 of SEQ ID NO : 31.
  • a vaccine antigen comprises the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31.
  • nucleotide sequence of nucleotides 120 to 995 of SEQ ID NO: 32 comprises the nucleotide sequence of nucleotides 120 to 995 of SEQ ID NO: 32, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 120 to 995 of SEQ ID NO: 32, or a fragment of the nucleotide sequence of nucleotides 120 to 995 of SEQ ID NO: 32, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of nucleotides 120 to 995 of SEQ ID NO: 32; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31 , or an immunogenic fragment of the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of amino acids 23 to 314 of SEQ ID NO: 31.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 120 to 995 of SEQ ID NO: 32; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 23 to 314 of SEQ ED NO: 31.
  • (i) comprises the nucleotide sequence of SEQ ID NO: 30, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 30, or a fragment of the nucleotide sequence of SEQ ID NO: 30, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ED NO: 30; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 29, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 29, or an immunogenic fragment of the amino acid sequence of SEQ ID NO: 29, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 29.
  • RNA encoding a vaccine antigen comprises the nucleotide sequence of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 29.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the nucleotide sequence of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 29.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof comprises the nucleotide sequence of SEQ ID NO: 30; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 29.
  • (i) comprises the nucleotide sequence of SEQ ID NO: 32, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 32, or a fragment of the nucleotide sequence of SEQ ID NO: 32, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 32; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 31, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 31, or an immunogenic fragment of the amino acid sequence of SEQ ID NO: 31, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 31.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of SEQ ID NO: 32; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 31.
  • a vaccine antigen comprises the amino acid sequence of SEQ ID NO: 28, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 28, or an immunogenic fragment of the amino acid sequence of SEQ ID NO: 28, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 28.
  • a vaccine antigen comprises the amino acid sequence of SEQ ID NO: 28.
  • (i) comprises the nucleotide sequence of SEQ ED NO: 27, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 27, or a fragment of the nucleotide sequence of SEQ ID NO: 27, or the nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 27; and/or
  • (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 28, an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 28, or an immunogenic fragment of the amino acid sequence of SEQ ID NO: 28, or the amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 28.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of SEQ ID NO: 27; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 28.
  • the vaccine antigens described above comprise a contiguous sequence of SARS- CoV-2 coronavirus spike (S) protein that consists of or essentially consists of the above described amino acid sequences derived from SARS-CoV-2 S protein or immunogenic fragments thereof (antigenic peptides or proteins) comprised by the vaccine antigens described above.
  • the vaccine antigens described above comprise a contiguous sequence of SARS-CoV-2 coronavirus spike (S) protein of no more than 220 amino acids, 215 amino acids, 210 amino acids, or 205 amino acids.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) described herein as BNT162bl (RBP020.3), BNT162b2 (RBP020.1 or RBP020.2).
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) described herein as RBP020.2.
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) and (i) comprises the nucleotide sequence of SEQ ID NO: 21, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 21, and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 5, or an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 5.
  • modRNA nucleoside modified messenger RNA
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) and (i) comprises the nucleotide sequence of SEQ ED NO: 21; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 5.
  • modRNA nucleoside modified messenger RNA
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) and (i) comprises the nucleotide sequence of SEQ ID NO: 19, or 20, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 19, or 20, and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 7, or an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 7.
  • modRNA nucleoside modified messenger RNA
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) and (i) comprises the nucleotide sequence of SEQ ID NO: 19, or 20; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 7.
  • modRNA nucleoside modified messenger RNA
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) and (i) comprises the nucleotide sequence of SEQ ID NO: 20, a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 20, and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 7, or an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the amino acid sequence of SEQ ID NO: 7.
  • modRNA nucleoside modified messenger RNA
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof is nucleoside modified messenger RNA (modRNA) and (i) comprises the nucleotide sequence of SEQ ID NO: 20; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 7.
  • modRNA nucleoside modified messenger RNA
  • the RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof (i) comprises the nucleotide sequence of nucleotides 54 to 725 of SEQ ID NO: 32; and/or (ii) encodes an amino acid sequence comprising the amino acid sequence of amino acids 1 to 224 of SEQ ID NO: 31.
  • RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof contains one or more of the above described RNA modifications, i.e., incorporation of a 5'-cap structure, incorporation of a poly-A sequence, unmasking of a poly-A sequence, alteration of the 5'- and/or 3'-UTR (such as incorporation of one or more 3'-UTRs), replacing one or more naturally occurring nucleotides with synthetic nucleotides (e.g., 5-methylcytidine for cytidine and/or pseudouridine (Y) or N(l)-methylpseudouridine (mlAF) or 5-methyluridine (m5U) for uridine), and codon optimization.
  • Y 5-methylcytidine for cytidine and/or pseudouridine
  • mlAF N(l)-methylpseudouridine
  • said RNA contains a combination of the above described modifications, preferably a combination of at least two, at least three, at least four or all five of the above-mentioned modifications, i.e., (i) incorporation of a 5'-cap structure, (ii) incorporation of a poly- A sequence, unmasking of a poly-A sequence; (iii) alteration of the 5'- and/or 3'-UTR (such as incorporation of one or more 3'-UTRs); (iv) replacing one or more naturally occurring nucleotides with synthetic nucleotides (e.g ., 5-methylcytidine for cytidine and/or pseudouridine (Y) or N(l)- methylpseudouridine (hiIY) or 5-methyluridine (m5U) for uridine), and (v) codon optimization.
  • synthetic nucleotides e.g ., 5-methylcytidine for cytidine and/or pseudouridine (Y)
  • said RNA is a modified RNA, in particular a stabilized mRNA.
  • said RNA comprises a modified nucleoside in place of at least one uridine.
  • said RNA comprises a modified nucleoside in place of uridine, such as in place of each uridine.
  • the modified nucleoside is independently selected from pseudouridine (y), N 1 -methyl-pseudouridine (ih ⁇ y), and 5- methyl-uridine (m5U).
  • said RNA comprises a 5’ cap, preferably a capl or cap2 structure, more preferably a capl structure.
  • said RNA comprises a 5’ UTR comprising the nucleotide sequence of SEQ ID NO: 12, or a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 12.
  • said RNA comprises a 3’ UTR comprising the nucleotide sequence of SEQ ID NO: 13, or a nucleotide sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to the nucleotide sequence of SEQ ID NO: 13.
  • said RNA comprises a poly-A sequence.
  • the poly-A sequence comprises at least 100 nucleotides.
  • the poly-A sequence comprises or consists of the nucleotide sequence of SEQ ID NO: 14.
  • said variants include mutations in RBD (e.g., but not limited to Q321L, V341I, A348T, N354D, S359N, V367F, K378R, R408I, Q409E, A435S, N439K, K458R, I472V, G476S, S477N, V483A, Y508H, H519P, etc., as compared to SEQ ID NO: 1), and/or mutations in spike protein (e.g., but not limited to D614G, etc., as compared to SEQ ID NO: 1 ).
  • RBD e.g., but not limited to Q321L, V341I, A348T, N354D, S359N, V367F, K378R, R408I, Q409E, A435S, N439K, K458R, I472V, G476S, S477N, V483
  • RNA compositions and/or methods described herein can be characterized for their ability to induce sera in vaccinated subject that display neutralizing activity with respect to any or all of such variants and/or combinations thereof.
  • RNA encoding a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS-CoV-2 S protein or the immunogenic variant thereof said variants include a mutation at position 501 in spike protein as compared to SEQ ID NO: 1 and optionally may include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, K417N, L242/A243/L244 deletion etc., as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, D614G, P681H, T716I, S982A, D1118H
  • said variants include "Variant of Concern 202012/01" (VOC-202012/01; also known as lineage B.1.1.7).
  • the variant had previously been named the first Variant Under Investigation in December 2020 (VUI - 202012/01) by Public Health England, but was reclassified to a Variant of Concern (VOC-202012/01).
  • VOC-202012/01 is a variant of SARS-CoV-2 which was first detected in October 2020 during the COVID-19 pandemic in the United Kingdom from a sample taken the previous month, and it quickly began to spread by mid-December.
  • VOC-202012/01 variant is defined by 23 mutations: 13 non-synonymous mutations, 4 deletions, and 6 synonymous mutations (i.e., there are 17 mutations that change proteins and six that do not).
  • the spike protein changes in VOC 202012/01 include deletion 69-70, deletion 144, N501Y, A570D, D614G, P681H, T716I, S982A, and D1118H.
  • N501Y a change from asparagine (N) to tyrosine (Y) at amino-acid site 501.
  • This mutation alone or in combination with the deletion at positions 69/70 in the N terminal domain (NTD) may enhance the transmissibility of the virus.
  • said variants include a SARs-CoV-2 spike variant including the following mutations: deletion 69-70, deletion 144, N501Y, A570D, D614G, P681H, T716I, S982A, and D1118H as compared to SEQ ID NO: 1.
  • said variants include variant "501. V2". This variant was first observed in samples from October 2020, and since then more than 300 cases with the 501.V2 variant have been confirmed by whole genome sequencing (WGS) in South Africa, where in December 2020 it was the dominant form of the virus. Preliminary results indicate that this variant may have an increased transmissibility.
  • the 501.V2 variant is defined by multiple spike protein changes including: D80A, D215G, E484K, N501 Y and A701 V, and more recently collected viruses have additional changes: L18F, R246I, K417N, and deletion 242-244.
  • said variants include a SARs-CoV-2 spike variant including the following mutations: D80A, D215G, E484K, N501Y and A701V as compared to SEQ ID NO: 1, and optionally: L18F, R246I, K417N, and deletion 242-244 as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variant may also include a D614G mutation as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including a H69/V70 deletion in spike protein as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variant may also include one or more further mutations as compared to SEQ ID NO: 1 (e.g ., but not limited to Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, K417N, L242/A243/L244 deletion, Y453F, I692V, S1147L, M1229I etc., as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g ., but not limited to Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, K417N, L242/A243/L
  • said SARs-CoV-2 spike variant includes the following mutations: deletion 69-70, deletion 144, N501Y, A570D, D614G, P681H, T716I, S982A, and D1118H as compared to SEQ ID NO: 1.
  • said variants include variant "Cluster 5", also referred to as AFVl-spike by the Danish State Serum Institute (SSI). It was discovered in North Jutland, Denmark, and is believed to have been spread from minks to humans via mink farms. In cluster 5, several different mutations in the spike protein of the virus have been confirmed.
  • SSI Danish State Serum Institute
  • the specific mutations include 69-70deltaHV (a deletion of the histidine and valine residues at the 69th and 70th position in the protein), Y453F (a change from tyrosine to phenylalanine at position 453), I692V (isoleucine to valine at position 692), M1229I (methionine to isoleucine at position 1229), and optionally SI 147L (serine to leucine at position 1147).
  • said variants include a SARs-CoV-2 spike variant including the following mutations: deletion 69-70, Y453F, I692V, M1229I, and optionally SI 147L, as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including a mutation at position 614 in spike protein as compared to SEQ ID NO: 1 , such as a D614G mutation in spike protein as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variants including a mutation at position 614 in spike protein as compared to SEQ ID NO: 1 may also include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, N501Y, A570D, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, K417N, L242/A243/L244 deletion, Y453F, I692V, SI 147L, Ml 2291 etc, as compared to SEQ ID NO: 1).
  • H69/V70 deletion e.g., but not limited to H69/V70 deletion, Y144 deletion, N501Y, A570D, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701
  • said variants include SARs-CoV-2 spike variants including the following mutations: deletion 69-70, deletion 144, N501Y, A570D, D614G, P681H, T716I, S982A, and D1118H as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501Y, A701V, and D614G as compared to SEQ ID NO: 1, and optionally: L18F, R246I, K417N, and deletion 242-244 as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including a mutation at positions 501 and 614 in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants include a N501Y mutation and a D614G mutation in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, K417N, L242/A243/L244 deletion, Y453F, I692V, SI 147L, M1229I etc, as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, K417N, L242/A243/L244 deletion, Y453F
  • said variants include SARs-CoV-2 spike variants including the following mutations: deletion 69-70, deletion 144, N501Y, A570D, D614G, P681H, T716I, S982A, and D1118H as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501Y, A701V, and D614G as compared to SEQ ID NO: 1, and optionally: L18F, R246I, K417N, and deletion 242-244 as compared to SEQ ID NO: 1
  • said variants include SARs-CoV-2 spike variants including a mutation at position 484 in spike protein as compared to SEQ ID NO: 1, such as a E484K mutation in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants may include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, N501 Y, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, A701V, L18F, R246I, K417N, L242/A243/L244 deletion, Y453F, I692V, S1147L, M1229I, T20N, P26S, D138Y, R190S, K417T, H655Y, T1027I, VI 176F etc., as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, N501 Y, A570D, D614G, P681H, T716I, S982A, D
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501 Y, and A701V, as compared to SEQ ID NO: 1, and optionally: L18F, R246I, K417N, and deletion 242-244 as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variant may also include a D614G mutation as compared to SEQ ID NO: 1.
  • said variants include variant lineage B.1.1.248, known as the Brazil(ian) variant.
  • This variant of S ARS-CoV- 2 has been named P.l lineage and has 17 unique amino acid changes, 10 of which in its spike protein, including N501Y and E484K.
  • B.1.1.248 originated from B.1.1.28.
  • E484K is present in both B.1.1.28 and B.1.1.248.
  • B.1.1.248 has a number of S-protein polymorphisms [L18F, T20N, P26S, D138Y, R190S, K417T, E484K, N501Y, H655Y, T1027I, VI 176F] and is similar in certain key RBD positions (K417, E484, N501) to variant described from South Africa.
  • said variants include SARs-CoV-2 spike variants including the following mutations: L18F, T20N, P26S, D138Y, R190S, K417T, E484K, N501Y, H655Y, T1027I, and V1176F as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including a mutation at positions 501 and 484 in spike protein as compared to SEQ ID NO: 1, such as aN501Y mutation and a E484K mutation in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants may include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, A701V, L18F, R246I, K417N, L242/A243/L244 deletion, Y453F, I692V, S1147L, M1229I, T20N, P26S, D138Y, R190S, K417T, H655Y, T1027I, VI 176F etc., as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D2
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501Y and A701V as compared to SEQ ID NO: 1, and optionally: L18F, R246I, K417N, and deletion 242-244 as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variant may also include a D614G mutation as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including the following mutations: L18F, T20N, P26S, D138Y, R190S, K417T, E484K, N501Y, H655Y, T1027I, and VI 176F as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including a mutation at positions 501, 484 and 614 in spike protein as compared to SEQ ID NO: 1, such as a N501Y mutation, a E484K mutation and a D614G mutation in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants may include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, P681H, T716I, S982A, D1118H, D80A, D215G, A701V, L18F, R246I, K417N, L242/A243/L244 deletion, Y453F, I692V, S1147L, M1229I, T20N, P26S, D138Y, R190S, K417T, H655Y, T1027I, V1176F etc., as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, P681H, T716I, S982A, D1118H, D80A, D215G, A701V, L18
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501Y, A701V, and D614G as compared to SEQ ID NO: 1, and optionally: L18F, R246I, K417N, and deletion 242-244 as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including a L242/A243/L244 deletion in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants may include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, K417N, Y453F, I692V, SI 147L, M1229I, T20N, P26S, D138Y, R190S, K417T, H655Y, T 10271, VI 176F etc., as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H, D80A,
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501Y, A701V and deletion 242-244 as compared to SEQ ID NO: 1, and optionally: L18F, R246I, and K417N, as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variant may also include a D614G mutation as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including a mutation at position 417 in spike protein as compared to SEQ ID NO: 1, such as a K417N or K417T mutation in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants may include one or more further mutations as compared to SEQ ED NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, E484K, A701V, L18F, R246I, L242/A243/L244 deletion, Y453F, I692V, S1147L, M1229I, T20N, P26S, D138Y, R190S, H655Y, T 10271, VI 176F etc., as compared to SEQ ED NO: 1).
  • SEQ ED NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, N501Y, A570D, D614G, P681H, T716I, S982A, D1118H,
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501Y, A701V and K417N, as compared to SEQ ED NO: 1, and optionally: L18F, R246I, and deletion 242-244 as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variant may also include a D614G mutation as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including the following mutations: L18F, T20N, P26S, D138Y, R190S, K417T, E484K, N501Y, H655Y, T1027I, and VI 176F as compared to SEQ ED NO: 1.
  • said variants include SARs-CoV-2 spike variants including a mutation at positions 417 and 484 and/or 501 in spike protein as compared to SEQ ID NO: 1, such as a K417N or K417T mutation and a E484K and/or N501Y mutation in spike protein as compared to SEQ ID NO: 1.
  • said SARs-CoV-2 spike variants may include one or more further mutations as compared to SEQ ID NO: 1 (e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, A701V, L18F, R246I, L242/A243/L244 deletion, Y453F, I692V, S1147L, Ml 2291, T20N, P26S, D138Y, R190S, H655Y, T1027I, VI 176F etc., as compared to SEQ ID NO: 1).
  • SEQ ID NO: 1 e.g., but not limited to H69/V70 deletion, Y144 deletion, A570D, D614G, P681H, T716I, S982A, D1118H, D80A, D215G, A701V, L18
  • said variants include SARs-CoV-2 spike variants including the following mutations: D80A, D215G, E484K, N501 Y, A701V and K417N, as compared to SEQ ID NO: 1, and optionally: L18F, R246I, and deletion 242-244 as compared to SEQ ID NO: 1.
  • Said SARs-CoV-2 spike variant may also include a D614G mutation as compared to SEQ ID NO: 1.
  • said variants include SARs-CoV-2 spike variants including following mutations: L18F, T20N, P26S, D138Y, R190S, K417T, E484K, N501Y, H655Y, T1027I, and VI 176F as compared to SEQ ID NO: 1.
  • the SARs-CoV-2 spike variants described herein may or may not include a D614G mutation as compared to SEQ ID NO: 1.
  • the antigen (such as a tumor antigen or vaccine antigen) is preferably administered as single-stranded, 5' capped RNA (preferably mRNA) that is translated into the respective protein upon entering cells of a subject being administered the RNA.
  • the RNA contains structural elements optimized for maximal efficacy of the RNA with respect to stability and translational efficiency (5' cap, 5' UTR, 3' UTR, poly(A) sequence).
  • beta-S-ARCA(Dl) is utilized as specific capping structure at the 5 '-end of the RNA.
  • m2 7 ’ 3 °Gppp(mi 2 " °)ApG is utilized as specific capping structure at the 5'-end of the RNA.
  • the 5 -UTR sequence is derived from the human alpha-globin mRNA and optionally has an optimized 'Kozak sequence' to increase translational efficiency.
  • FI element a combination of two sequence elements (FI element) derived from the "amino terminal enhancer of split" (AES) mRNA (called F) and the mitochondrial encoded 12S ribosomal RNA (called I) are placed between the coding sequence and the poly(A) sequence to assure higher maximum protein levels and prolonged persistence of the mRNA.
  • F amino terminal enhancer of split
  • I mitochondrial encoded 12S ribosomal RNA
  • two re-iterated 3'-UTRs derived from the human beta-globin mRNA are placed between the coding sequence and the poly(A) sequence to assure higher maximum protein levels and prolonged persistence of the mRNA.
  • a poly(A) sequence measuring 110 nucleotides in length, consisting of a stretch of 30 adenosine residues, followed by a 10 nucleotide linker sequence and another 70 adenosine residues is used.
  • This poly(A) sequence was designed to enhance RNA stability and translational efficiency.
  • RNA platforms each of which encodes a SARS-CoV-2 S protein, an immunogenic variant thereof, or an immunogenic fragment of the SARS- CoV-2 S protein or the immunogenic variant thereof.
  • vaccine RNA described herein may comprise, from 5' to 3', one of the following structures:
  • a vaccine antigen described herein may comprise, from N-terminus to C-terminus, one of the following structures:
  • RBD and Trimerization Domain may be separated by a linker, in particular a GS linker such as a linker having the amino acid sequence GSPGSGSGS (SEQ ID NO: 33).
  • Trimerization Domain and Transmembrane Domain may be separated by a linker, in particular a GS linker such as a linker having the amino acid sequence GSGSGS (SEQ ID NO: 34).
  • Signal Sequence may be a signal sequence as described herein.
  • RBD may be a RBD domain as described herein.
  • Trimerization Domain may be a trimerization domain as described herein.
  • Transmembrane Domain may be a transmembrane domain as described herein.
  • Signal sequence comprises the amino acid sequence of amino acids 1 to 16 or 1 to 19 of SEQ ID NO: 1 or the amino acid sequence of amino acids 1 to 22 of SEQ ID NO: 31, or an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to this amino acid sequence,
  • RBD comprises the amino acid sequence of amino acids 327 to 528 of SEQ ID NO: 1, or an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to this amino acid sequence
  • Trimerization Domain comprises the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10 or the amino acid sequence of SEQ ID NO: 10, or an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to this amino acid sequence
  • Transmembrane Domain comprises the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1, or an amino acid sequence having at least 99%, 98%, 97%, 96%, 95%, 90%, 85%, or 80% identity to this amino acid sequence.
  • Signal sequence comprises the amino acid sequence of amino acids 1 to 16 or 1 to 19 of SEQ ID NO: 1 or the amino acid sequence of amino acids 1 to 22 of SEQ ID NO: 31,
  • RBD comprises the amino acid sequence of amino acids 327 to 528 of SEQ ED NO: 1
  • Trimerization Domain comprises the amino acid sequence of amino acids 3 to 29 of SEQ ID NO: 10 or the amino acid sequence of SEQ ID NO: 10;
  • Transmembrane Domain comprises the amino acid sequence of amino acids 1207 to 1254 of SEQ ID NO: 1.
  • RNA or RNA encoding the above described vaccine antigen may be non-modified uridine containing mRNA (uRNA), nucleoside modified mRNA (modRNA) or self-amplifying RNA (saRNA).
  • uRNA uridine containing mRNA
  • modRNA nucleoside modified mRNA
  • saRNA self-amplifying RNA
  • the above described RNA or RNA encoding the above described vaccine antigen is nucleoside modified mRNA (modRNA).
  • Non-modified uridine messenger RNA uRNA
  • each uRNA preferably contains common structural elements optimized for maximal efficacy of the RNA with respect to stability and translational efficiency (5 '-cap, 5'-UTR, 3'- UTR, poly(A)-tail).
  • the preferred 5’ cap structure is beta-S-ARCA(Dl) (m2 7 ' 2 °GppSpG).
  • the preferred 5'-UTR and 3'-UTR comprise the nucleotide sequence of SEQ ID NO: 12 and the nucleotide sequence of SEQ ID NO: 13, respectively.
  • the preferred poly(A)-tail comprises the sequence of SEQ ID NO: 14.
  • RBL063.1 (SEQ ID NO: 15; SEQ ID NO: 7)
  • S1S2 protein Encoded antigen Viral spike protein (S1S2 protein) of the SARS-CoV-2 (S1S2 full-length protein, sequence variant) RBL063.2 (SEQ ID NO: 16; SEQ ID NO: 7)
  • S1S2 protein Encoded antigen Viral spike protein (S1S2 protein) of the SARS-CoV-2 (S1S2 full-length protein, sequence variant)
  • S protein Encoded antigen Viral spike protein (S protein) of the SARS-CoV-2 (partial sequence, Receptor
  • hAg-Kozak mean the 5'-UTR sequence of the human alpha-globin mRNA with an optimized ‘Kozak sequence’ to increase translational efficiency;
  • S1S2 protein / "S1S2 RBD” means the sequences encoding the respective antigen of SARS-CoV-2;
  • FI element means that the 3'-UTR is a combination of two sequence elements derived from the "amino terminal enhancer of split" (AES) mRNA (called F) and the mitochondrial encoded 12S ribosomal RNA (called I).
  • AES amino terminal enhancer of split
  • A30L70 means a poly(A)-tail measuring 110 nucleotides in length, consisting of a stretch of 30 adenosine residues, followed by a 10 nucleotide linker sequence and another 70 adenosine residues designed to enhance RNA stability and translational efficiency in dendritic cells
  • GS means a glycine- serine linker, i.e., sequences coding for short linker peptides predominantly consisting of the amino acids glycine (G) and serine (S), as commonly used for fusion proteins.
  • each modRNA contains common structural elements optimized for maximal efficacy of the RNA as the uRNA (5 '-cap, 5'-UTR, 3'-UTR, poly(A)- tail). Compared to the uRNA, modRNA contains 1 -methyl -pseudouridine instead of uridine.
  • the preferred 5’ cap structure is m2 7 ⁇ 3 "0 Gppp(mi 2 ' °)ApG.
  • the preferred 5'-UTR and 3'-UTR comprise the nucleotide sequence of SEQ ID NO: 12 and the nucleotide sequence of SEQ ID NO: 13, respectively.
  • the preferred poly(A)-tail comprises the sequence of SEQ ID NO: 14.
  • BNT162b2; RBP020.1 (SEQ ID NO: 19; SEQ ID NO: 7) Structure m 2 7 ' 3’"0 Gppp(mi 2 °)ApG)-hAg-Kozak-SlS2-PP-FI-A30L70 Encoded antigen Viral spike protein (S1S2 protein) of the SARS-CoV-2 (S1S2 full-length protein, sequence variant)
  • BNT162b2; RBP020.2 (SEQ ID NO: 20; SEQ ID NO: 7)
  • S1S2 protein Encoded antigen Viral spike protein (S1S2 protein) of the SARS-CoV-2 (S1S2 full-length protein, sequence variant)
  • S1S2 protein Encoded antigen Viral spike protein (S1S2 protein) of the SARS-CoV-2 (partial sequence,
  • S1S2 protein Encoded antigen Viral spike protein (S1S2 protein) of the SARS-CoV-2 (partial sequence,
  • S1S2 protein Encoded antigen Viral spike protein (S1S2 protein) of the SARS-CoV-2 (partial sequence,
  • RNA Self-amplifying RNA
  • the active principle of the self-amplifying mRNA (saRNA) drug substance is a single-stranded RNA, which self-amplifies upon entering a cell, and the coronavirus vaccine antigen is translated thereafter.
  • the coding region of saRNA contains two open reading frames (ORFs).
  • the 5’-ORF encodes the RNA-dependent RNA polymerase such as Venezuelan equine encephalitis virus (VEEV) RNA-dependent RNA polymerase (replicase).
  • VEEV Venezuelan equine encephalitis virus
  • replicase RNA-dependent RNA polymerase
  • the replicase ORE is followed 3’ by a subgenomic promoter and a second ORE encoding the antigen.
  • saRNA UTRs contain 5’ and 3’ conserved sequence elements (CSEs) required for self- amplification.
  • CSEs conserved sequence elements
  • the saRNA contains common structural elements optimized for maximal efficacy of the RNA as the uRNA (5 '-cap, 5'-UTR, 3'-UTR, poly(A)-tail).
  • the saRNA preferably contains uridine.
  • the preferred 5’ cap structure is beta-S-ARCA(Dl) (m2 7,2' °GppSpG).
  • Cytoplasmic delivery of saRNA initiates an alphavirus-like life cycle.
  • the saRNA does not encode for alphaviral structural proteins that are required for genome packaging or cell entry, therefore generation of replication competent viral particles is very unlikely to not possible.
  • Replication does not involve any intermediate steps that generate DNA.
  • the use/uptake of saRNA therefore poses no risk of genomic integration or other permanent genetic modification within the target cell.
  • the saRNA itself prevents its persistent replication by effectively activating innate immune response via recognition of dsRNA intermediates.
  • RBS004.1 (SEQ ID NO: 24; SEQ ID NO: 7)
  • S protein Encoded antigen Viral spike protein (S protein) of the SARS-CoV-2 (S1S2 full-length protein, sequence variant)
  • RBS004.2 (SEQ ID NO: 25; SEQ ID NO: 7)
  • S protein Encoded antigen Viral spike protein (S protein) of the SARS-CoV-2 (S1S2 full-length protein, sequence variant)
  • BNT162cl RBS004.3 (SEQ ID NO: 26; SEQ ID NO: 5)
  • S protein Encoded antigen Viral spike protein (S protein) of the SARS-CoV-2 (partial sequence,
  • RBS004.4 (SEQ ID NO: 27; SEQ ID NO: 28)
  • S protein Encoded antigen Viral spike protein (S protein) of the SARS-CoV-2 (partial sequence,
  • a secretory signal peptide may be fused to the antigen-encoding regions preferably in a way that the sec is translated as N terminal tag.
  • sec corresponds to the secretory signal peptide of the S protein.
  • Sequences coding for short linker peptides predominantly consisting of the amino acids glycine (G) and serine (S), as commonly used for fusion proteins may be used as GS/Linkers.
  • RNA preferably mRNA
  • an antigen such as a tumor antigen or a vaccine antigen
  • the RNA is transiently expressed in cells of the subject.
  • the RNA is in vitro transcribed.
  • expression of the antigen is at the cell surface.
  • the antigen is expressed and presented in the context of MHC.
  • expression of the antigen is into the extracellular space, i.e., the antigen is secreted.
  • the antigen molecule or a procession product thereof may bind to an antigen receptor such as a BCR or TCR carried by immune effector cells, or to antibodies.
  • Said immune response is preferably directed against a target antigen.
  • a vaccine antigen may comprise the target antigen, a variant thereof, or a fragment thereof. In one embodiment, such fragment or variant is immunologically equivalent to the target antigen.
  • fragment of an antigen or “variant of an antigen” means an agent which results in the induction of an immune response which immune response targets the antigen, i.e. a target antigen.
  • the vaccine antigen may correspond to or may comprise the target antigen, may correspond to or may comprise a fragment of the target antigen or may correspond to or may comprise an antigen which is homologous to the target antigen or a fragment thereof.
  • a vaccine antigen may comprise an immunogenic fragment of a target antigen or an amino acid sequence being homologous to an immunogenic fragment of a target antigen.
  • An "immunogenic fragment of an antigen” according to the disclosure preferably relates to a fragment of an antigen which is capable of inducing an immune response against the target antigen.
  • the vaccine antigen may be a recombinant antigen.
  • immunologically equivalent means that the immunologically equivalent molecule such as the immunologically equivalent amino acid sequence exhibits the same or essentially the same immunological properties and/or exerts the same or essentially the same immunological effects, e.g., with respect to the type of the immunological effect.
  • immunologically equivalent is preferably used with respect to the immunological effects or properties of antigens or antigen variants used for immunization.
  • an amino acid sequence is immunologically equivalent to a reference amino acid sequence if said amino acid sequence when exposed to the immune system of a subject induces an immune reaction having a specificity of reacting with the reference amino acid sequence.
  • the RNA (preferably mRNA) used in the present disclosure is non-immunogenic.
  • RNA encoding an immunostimulant may be administered according to the present disclosure to provide an adjuvant effect.
  • the RNA encoding an immunostimulant may be standard RNA or non-immunogenic RNA.
  • non-immunogenic RNA refers to RNA that does not induce a response by the immune system upon administration, e.g., to a mammal, or induces a weaker response than would have been induced by the same RNA that differs only in that it has not been subjected to the modifications and treatments that render the non-immunogenic RNA non- immunogenic, i.e., than would have been induced by standard RNA (stdRNA).
  • stdRNA standard RNA
  • non-immunogenic RNA which is also termed modified RNA (modRNA) herein, is rendered non-immunogenic by incorporating modified nucleosides suppressing RNA-mediated activation of innate immune receptors into the RNA and removing double-stranded RNA (dsRNA).
  • modified RNA dsRNA
  • any modified nucleoside may be used as long as it lowers or suppresses immunogenicity of the RNA.
  • modified nucleosides that suppress RNA- mediated activation of innate immune receptors.
  • the modified nucleosides comprise a replacement of one or more uridines with a nucleoside comprising a modified nucleobase.
  • the modified nucleobase is a modified uracil.
  • the nucleoside comprising a modified nucleobase is selected from the group consisting of 3 -methyl -uridine (m 3 U), 5- methoxy-uridine (mo 5 U), 5-aza-uridine, 6-aza-uridine, 2-thio-5-aza-uridine, 2-thio-uridine (s 2 U), 4- thio-uridine (s 4 U), 4-thio-pseudouridine, 2-thio-pseudouridine, 5 -hydroxy-uridine (ho 5 U), 5-aminoallyl- uridine, 5 -halo-uridine (e.g., 5-iodo-uridine or 5-bromo-uridine), uridine 5-oxyacetic acid (cmo 5 U), uridine 5-oxyacetic acid methyl ester (mcmo 5 U), 5-carboxymethyl-uridine (cm 5 U), 1-carboxymethyl- pseudouridine, 5-carboxyhydroxymethyl-uridine (chm 5 U), 5-carboxyhydroxy
  • the nucleoside comprising a modified nucleobase is pseudouridine (y), N1 -methyl-pseudouridine (m 1 y) or 5 -methyl-uridine (m5U), in particular N1 -methyl-pseudouridine.
  • the replacement of one or more uridines with a nucleoside comprising a modified nucleobase comprises a replacement of at least 1%, at least 2%, at least 3%, at least 4%, at least 5%, at least 10%, at least 25%, at least 50%, at least 75%, at least 90%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99% or 100% of the uridines.
  • RNA preferably mRNA
  • IVT in vitro transcription
  • dsRNA double-stranded RNA
  • dsRNA induces inflammatory cytokines and activates effector enzymes leading to protein synthesis inhibition.
  • dsRNA can be removed from RNA such as IVT RNA, for example, by ion-pair reversed phase HPLC using a non-porous or porous C-18 polystyrene- divinylbenzene (PS-DVB) matrix.
  • PS-DVB polystyrene- divinylbenzene
  • E enzymatic based method using E.
  • dsRNA can be separated from ssRNA by using a cellulose material.
  • an RNA preparation is contacted with a cellulose material and the ssRNA is separated from the cellulose material under conditions which allow binding of dsRNA to the cellulose material and do not allow binding of ssRNA to the cellulose material.
  • Suitable methods for providing ssRNA are disclosed, for example, in WO 2017/182524.
  • remove or “removal” refers to the characteristic of a population of first substances, such as non-immunogenic RNA, being separated from the proximity of a population of second substances, such as dsRNA, wherein the population of first substances is not necessarily devoid of the second substance, and the population of second substances is not necessarily devoid of the first substance.
  • a population of first substances characterized by the removal of a population of second substances has a measurably lower content of second substances as compared to the non- separated mixture of first and second substances.
  • the removal of dsRNA (especially mRNA) from non-immunogenic RNA comprises a removal of dsRNA such that less than 10%, less than 5%, less than 4%, less than 3%, less than 2%, less than 1%, less than 0.5%, less than 0.3%, or less than 0.1% of the RNA in the non-immunogenic RNA composition is dsRNA.
  • the non-immunogenic RNA (especially mRNA) is free or essentially free of dsRNA.
  • the non-immunogenic RNA (especially mRNA) composition comprises a purified preparation of single-stranded nucleoside modified RNA.
  • the purified preparation of single-stranded nucleoside modified RNA is substantially free of double stranded RNA (dsRNA).
  • the purified preparation is at least 90%, at least 91%, at least 92%, at least 93 %, at least 94%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99%, at least 99.5%, or at least 99.9% single stranded nucleoside modified RNA, relative to all other nucleic acid molecules (DNA, dsRNA, etc.).
  • the non-immunogenic RNA (especially mRNA) is translated in a cell more efficiently than standard RNA with the same sequence.
  • translation is enhanced by a factor of 2-fold relative to its unmodified counterpart.
  • translation is enhanced by a 3-fold factor.
  • translation is enhanced by a 4-fold factor.
  • translation is enhanced by a 5-fold factor.
  • translation is enhanced by a 6-fold factor.
  • translation is enhanced by a 7-fold factor.
  • translation is enhanced by an 8-fold factor.
  • translation is enhanced by a 9-fold factor.
  • translation is enhanced by a 10-fold factor.
  • translation is enhanced by a 15-fold factor.
  • translation is enhanced by a 20-fold factor. In one embodiment, translation is enhanced by a 50-fold factor. In one embodiment, translation is enhanced by a 100-fold factor. In one embodiment, translation is enhanced by a 200-fold factor. In one embodiment, translation is enhanced by a 500-fold factor. In one embodiment, translation is enhanced by a 1000-fold factor. In one embodiment, translation is enhanced by a 2000-fold factor. In one embodiment, the factor is 10- 1000-fold. In one embodiment, the factor is 10-100-fold. In one embodiment, the factor is 10-200-fold. In one embodiment, the factor is 10-300-fold. In one embodiment, the factor is 10-500-fold. In one embodiment, the factor is 20-1000-fold. In one embodiment, the factor is 30-1000-fold.
  • the factor is 50-1000-fold. In one embodiment, the factor is 100-1000-fold. In one embodiment, the factor is 200- 1000-fold. In one embodiment, translation is enhanced by any other significant amount or range of amounts.
  • the non-immunogenic RNA (especially mRNA) exhibits significantly less innate immunogenicity than standard RNA with the same sequence. In one embodiment, the non-immunogenic RNA (especially mRNA) exhibits an innate immune response that is 2-fold less than its unmodified counterpart. In one embodiment, innate immunogenicity is reduced by a 3-fold factor. In one embodiment, innate immunogenicity is reduced by a 4-fold factor. In one embodiment, innate immunogenicity is reduced by a 5 -fold factor.
  • innate immunogenicity is reduced by a 6-fold factor. In one embodiment, innate immunogenicity is reduced by a 7-fold factor. In one embodiment, innate immunogenicity is reduced by a 8-fold factor. In one embodiment, innate immunogenicity is reduced by a 9-fold factor. In one embodiment, innate immunogenicity is reduced by a 10-fold factor. In one embodiment, innate immunogenicity is reduced by a 15-fold factor. In one embodiment, innate immunogenicity is reduced by a 20-fold factor. In one embodiment, innate immunogenicity is reduced by a 50-fold factor. In one embodiment, innate immunogenicity is reduced by a 100-fold factor. In one embodiment, innate immunogenicity is reduced by a 200-fold factor. In one embodiment, innate immunogenicity is reduced by a 500-fold factor. In one embodiment, innate immunogenicity is reduced by a 1000-fold factor. In one embodiment, innate immunogenicity is reduced by a 2000-fold factor.
  • the term "exhibits significantly less innate immunogenicity" refers to a detectable decrease in innate immunogenicity.
  • the term refers to a decrease such that an effective amount of the non-immunogenic RNA (especially mRNA) can be administered without triggering a detectable innate immune response.
  • the term refers to a decrease such that the non-immunogenic RNA (especially mRNA) can be repeatedly administered without eliciting an innate immune response sufficient to detectably reduce production of the protein encoded by the non-immunogenic RNA.
  • the decrease is such that the non-immunogenic RNA (especially mRNA) can be repeatedly administered without eliciting an innate immune response sufficient to eliminate detectable production of the protein encoded by the non-immunogenic RNA.
  • Immunogenicity is the ability of a foreign substance, such as RNA, to provoke an immune response in the body of a human or other animal.
  • the innate immune system is the component of the immune system that is relatively unspecific and immediate. It is one of two main components of the vertebrate immune system, along with the adaptive immune system.
  • endogenous refers to any material from or produced inside an organism, cell, tissue or system.
  • exogenous refers to any material introduced from or produced outside an organism, cell, tissue or system.
  • expression as used herein is defined as the transcription and/or translation of a particular nucleotide sequence.
  • RNA containing particles have been described previously to be suitable for delivery of RNA in particulate form (cf., e.g., Kaczmarek, J. C. et al., 2017, Genome Medicine 9, 60).
  • nanoparticle encapsulation of RNA physically protects RNA from degradation and, depending on the specific chemistry, can aid in cellular uptake and endosomal escape.
  • Electrostatic interactions between positively charged molecules such as polymers and lipids and negatively charged nucleic acid are involved in particle formation. This results in complexation and spontaneous formation of nucleic acid particles.
  • the term "particle” relates to a structured entity formed by molecules or molecule complexes, in particular particle forming compounds.
  • the particle contains an envelope (e.g., one or more layers or lamellas) made of one or more types of amphiphilic substances (e.g., amphiphilic lipids, amphiphilic polymers, and/or amphiphilic proteins/polypeptides).
  • amphiphilic substance means that the substance possesses both hydrophilic and lipophilic properties.
  • the envelope may also comprise additional substances (e.g., additional lipids and/or additional polymers) which do not have to be amphiphilic.
  • the particle may be a monolamellar or multilamellar structure, wherein the substances constituting the one or more layers or lamellas comprise one or more types of amphiphilic substances (in particular selected from the group consisting of amphiphilic lipids, amphiphilic polymers, and/or amphiphilic proteins/polypeptides) optionally in combination with additional substances (e.g., additional lipids and/or additional polymers) which do not have to be amphiphilic.
  • the term "particle” relates to a micro- or nanosized structure, such as a micro- or nano-sized compact structure.
  • micro-sized means that all three external dimensions of the particle are in the microscale, i.e., between 1 and 5 pm.
  • particle includes lipoplex particles (LPXs), lipid nanoparticles (LNPs), polyplex particles, lipopolyplex particles, virus-like particles (VLPs), and mixtures thereof (e.g., a mixture of two or more of particle types, such as a mixture of LPXs and VLPs or a mixture of LNPs and VLPs).
  • a “nucleic acid particle” can be used to deliver nucleic acid to a target site of interest (e.g ., cell, tissue, organ, and the like).
  • a nucleic acid particle may be formed from at least one cationic or cationically ionizable lipid or lipid-like material, at least one cationic polymer such as protamine, or a mixture thereof and nucleic acid.
  • Nucleic acid particles include lipid nanoparticle (LNP)-based and lipoplex (LPX)- based formulations.
  • the cationic or cationically ionizable lipid or lipid-like material and/or the cationic polymer combine together with the nucleic acid to form aggregates, and this aggregation results in colloidally stable particles.
  • particles described herein further comprise at least one lipid or lipid-like material other than a cationically ionizable lipid.
  • nucleic acid particles (especially RNA particles such as RNA LNPs (e.g., mRNA particles such as mRNA LNPs)) comprise more than one type of nucleic acid molecules, where the molecular parameters of the nucleic acid molecules may be similar or different from each other, like with respect to molar mass or fundamental structural elements such as molecular architecture, capping, coding regions or other features,
  • nanoparticle refers to a particle comprising nucleic acid (especially mRNA) as described herein and at least one cationic lipid, wherein all three external dimensions of the particle are in the nanoscale, i.e., at least about 1 nm and below about 1000 nm (preferably, between 10 and 990 nm, such as between 15 and 900 nm, between 20 and 800 nm, between 30 and 700 nm, between 40 and 600 nm, or between 50 and 500 nm).
  • the longest and shortest axes do not differ significantly.
  • the size of a particle is its diameter.
  • Nucleic acid particles described herein may exhibit a polydispersity index (PDI) less than about 0.5, less than about 0.4, less than about 0.3, less than about 0.2, less than about 0.1, or less than about 0.05.
  • PDI polydispersity index
  • the nucleic acid particles can exhibit a polydispersity index in a range of about 0.01 to about 0.4 or about 0.1 to about 0.3.
  • lipoplex particle relates to a particle that contains an amphiphilic lipid, in particular cationic amphiphilic lipid, and nucleic acid (especially RNA such as mRNA) as described herein. Electrostatic interactions between positively charged liposomes (made from one or more amphiphilic lipids, in particular cationic amphiphilic lipids) and negatively charged nucleic acid (especially RNA such as mRNA) results in complexation and spontaneous formation of nucleic acid lipoplex particles. Positively charged liposomes may be generally synthesized using a cationic amphiphilic lipid, such as DOTMA, and additional lipids, such as DOPE.
  • a nucleic acid (especially RNA such as mRNA) lipoplex particle is a nanoparticle.
  • lipid nanoparticle relates to a nano-sized lipid containing particle.
  • polyplex particle relates to a particle that contains an amphiphilic polymer, in particular a cationic amphiphilic polymer, and nucleic acid (especially RNA such as mRNA) as described herein. Electrostatic interactions between positively charged cationic amphiphilic polymers and negatively charged nucleic acid (especially RNA such as mRNA) results in complexation and spontaneous formation of nucleic acid polyplex particles. Positively charged amphiphilic polymers suitable for the preparation of polyplex particle include protamine, polyethyleneimine, poly-L-lysine, poly-L-arginine and histone.
  • a nucleic acid (especially RNA such as mRNA) polyplex particle is a nanoparticle.
  • lipopolyplex particle relates to particle that contains amphiphilic lipid (in particular cationic amphiphilic lipid) as described herein, amphiphilic polymer (in particular cationic amphiphilic polymer) as described herein, and nucleic acid (especially RNA such as mRNA) as described herein.
  • a nucleic acid (especially RNA such as mRNA) lipopolyplex particle is a nanoparticle.
  • virus-like particle refers to a molecule that closely resembles a virus, but which does not contain any genetic material of said virus and, thus, is non-infectious.
  • VLPs contain nucleic acid (preferably RNA) as described herein, said nucleic acid (preferably RNA) being heterologous to the virus(es) from which the VLPs are derived.
  • VLPs can be synthesized through the individual expression of viral structural proteins, which can then self-assemble into the virus-like structure. In one embodiment, combinations of structural capsid proteins from different viruses can be used to create recombinant VLPs.
  • VLPs can be produced from components of a wide variety of virus families including Hepatitis B virus (HBV) (small HBV derived surface antigen (HBsAg)), Parvoviridae (e.g., adeno-associated virus), Papillomaviridae (e.g., HPV), Retroviridae (e.g., HIV), Flaviviridae (e.g., Hepatitis C virus) and bacteriophages (e.g. Qp, AP205).
  • HBV Hepatitis B virus
  • HBsAg small HBV derived surface antigen
  • Parvoviridae e.g., adeno-associated virus
  • Papillomaviridae e.g., HPV
  • Retroviridae e.g., HIV
  • Flaviviridae e.g., Hepatitis C virus
  • bacteriophages e.g. Qp, AP205
  • nucleic acid containing particle relates to a particle as described herein to which nucleic acid (especially RNA such as mRNA) is bound.
  • nucleic acid especially RNA such as mRNA
  • the nucleic acid may be adhered to the outer surface of the particle (surface nucleic acid (especially surface RNA such as surface mRNA)) and/or may be contained in the particle (encapsulated nucleic acid (especially encapsulated RNA such as encapsulated mRNA)).
  • the particles utilized in the methods and uses of the present disclosure have a size (preferably a diameter, i.e., double the radius such as double the radius of gyration (R g ) value or double the hydrodynamic radius) in the range of about 10 to about 2000 nm, such as at least about 15 nm (preferably at least about 20 nm, at least about 25 nm, at least about 30 nm, at least about 35 nm, at least about 40 nm, at least about 45 nm, at least about 50 nm, at least about 55 nm, at least about 60 nm, at least about 65 nm, at least about 70 nm, at least about 75 nm, at least about 80 nm, at least about 85 nm, at least about 90 nm, at least about 95 nm, or at least about 100 nm) and/or at most 1900 nm (preferably at most about 1900 nm, at most about 1800 nm, at most about 1700 nm).
  • the N/P ratio gives the ratio of the nitrogen groups in the lipid to the number of phosphate groups in the RNA. It is correlated to the charge ratio, as the nitrogen atoms (depending on the pH) are usually positively charged and the phosphate groups are negatively charged.
  • the N/P ratio where a charge equilibrium exists, depends on the pH. Lipid formulations are frequently formed at N/P ratios larger than four up to twelve, because positively charged nanoparticles are considered favorable for transfection. In that case, RNA is considered to be completely bound to nanoparticles.
  • Nucleic acid particles (especially RNA LNPs such as mRNA LNPs) described herein can be prepared using a wide range of methods that may involve obtaining a colloid from at least one cationic or cationically ionizable lipid and/or at least one cationic polymer and mixing the colloid with nucleic acid to obtain nucleic acid particles.
  • the term "colloid” as used herein relates to a type of homogeneous mixture in which dispersed particles do not settle out.
  • the insoluble particles in the mixture are microscopic, with particle sizes between 1 and 1000 nanometers.
  • the mixture may be termed a colloid or a colloidal suspension. Sometimes the term “colloid” only refers to the particles in the mixture and not the entire suspension.
  • colloids comprising at least one cationic or cationically ionizable lipid and/or at least one cationic polymer methods are applicable herein that are conventionally used for preparing liposomal vesicles and are appropriately adapted.
  • the most commonly used methods for preparing liposomal vesicles share the following fundamental stages: (i) lipids dissolution in organic solvents, (ii) drying of the resultant solution, and (iii) hydration of dried lipid (using various aqueous media).
  • lipids are firstly dissolved in a suitable organic solvent, and dried down to yield a thin film at the bottom of the flask.
  • the obtained lipid film is hydrated using an appropriate aqueous medium to produce a liposomal dispersion.
  • an additional downsizing step may be included.
  • Reverse phase evaporation is an alternative method to the film hydration for preparing liposomal vesicles that involves formation of a water-in-oil emulsion between an aqueous phase and an organic phase containing lipids. A brief sonication of this mixture is required for system homogenization. The removal of the organic phase under reduced pressure yields a milky gel that turns subsequently into a liposomal suspension.
  • ethanol injection technique refers to a process, in which an ethanol solution comprising lipids is rapidly injected into an aqueous solution through a needle. This action disperses the lipids throughout the solution and promotes lipid structure formation, for example lipid vesicle formation such as liposome formation.
  • nucleic acid especially RNA such as mRNA
  • the nucleic acid lipoplex particles described herein are obtainable by adding nucleic acid (especially RNA such as mRNA) to a colloidal liposome dispersion.
  • colloidal liposome dispersion is, in one embodiment, formed as follows: an ethanol solution comprising lipids, such as cationically ionizable lipids and additional lipids, is injected into an aqueous solution under stirring.
  • lipids such as cationically ionizable lipids and additional lipids
  • the nucleic acid (especially RNA such as mRNA) lipoplex particles described herein are obtainable without a step of extrusion.
  • extruding refers to the creation of particles having a fixed, cross-sectional profile. In particular, it refers to the downsizing of a particle, whereby the particle is forced through filters with defined pores.
  • LNPs typically comprise four components: ionizable cationic lipids, neutral lipids such as phospholipids, a steroid such as cholesterol, and a polymer conjugated lipid. Each component is responsible for payload protection, and enables effective intracellular delivery.
  • LNPs may be prepared by mixing lipids dissolved in ethanol rapidly with nucleic acid in an aqueous buffer. Different types of nucleic acid containing particles have been described previously to be suitable for delivery of nucleic acid in particulate form (cf., e.g., Kaczmarek, J. C. et al., 2017, Genome Medicine 9, 60).
  • nanoparticle encapsulation of nucleic acid physically protects nucleic acid from degradation and, depending on the specific chemistry, can aid in cellular uptake and endosomal escape.
  • the LNPs comprising RNA and at least one cationically ionizable lipid described herein further comprise one or more additional lipids.
  • the LNPs comprising RNA and at least one cationically ionizable lipid described herein are prepared by (a) preparing an RNA solution containing water and a first buffer system; (b) preparing an ethanolic solution comprising the cationically ionizable lipid and, if present, one or more additional lipids; (c) mixing the RNA solution prepared under (a) with the ethanolic solution prepared under (b), thereby preparing a first intermediate formulation comprising the LNPs dispersed in a first aqueous phase comprising the first buffer system; and (d) filtrating the first intermediate formulation prepared under (c) using a final aqueous buffer solution comprising the final buffer system, thereby preparing the formulation comprising LNPs dispersed in a final aqueous phase comprising the final buffer system.
  • step (c) one or more steps selected from diluting and filtrating, such as tangential flow filtrating or diafiltrating, can follow.
  • the first buffer system differs from the final buffer system.
  • the first buffer system and the final buffer system are the same.
  • the LNPs comprising RNA and at least one cationically ionizable lipid described herein are prepared by (a’) preparing liposomes or a colloidal preparation of the cationically ionizable lipid and, if present, one or more additional lipids in an aqueous phase; (b’) preparing an RNA solution containing water and a buffering system; and (c’) mixing the liposomes or colloidal preparation prepared under (a’) with the mRNA solution prepared under (b’). After step (c’) one or more steps selected from diluting and filtrating, such as tangential flow filtrating, can follow.
  • compositions which comprise particles comprising RNA (especially LNPs comprising RNA) and at least one cationically ionizable lipid which associates with the RNA to form nucleic acid particles.
  • the RNA particles may comprise RNA which is complexed in different forms by non-covalent interactions to the particle.
  • the particles described herein are not viral particles, in particular infectious viral particles, i.e., they are not able to virally infect cells.
  • Suitable cationically ionizable lipids are those that form nucleic acid particles and are included by the term “particle forming components" or "particle forming agents".
  • the term “particle forming components” or “particle forming agents” relates to any components which associate with nucleic acid to form nucleic acid particles. Such components include any component which can be part of nucleic acid particles.
  • the nucleic acid particles (especially RNA LNPs) described herein comprise at least one cationically ionizable lipid as particle forming agent.
  • Cationically ionizable lipids contemplated for use herein include any cationically ionizable lipids or lipid-like materials which are able to electrostatically bind nucleic acid.
  • cationically ionizable lipids contemplated for use herein can be associated with nucleic acid, e.g. by forming complexes with the nucleic acid or forming vesicles in which the nucleic acid is enclosed or encapsulated.
  • a "cationic lipid” or “cationic lipid-like material” refers to a lipid or lipid-like material having a net positive charge. Cationic lipids or lipid-like materials bind negatively charged nucleic acid by electrostatic interaction. Generally, cationic lipids possess a lipophilic moiety, such as a sterol, an acyl chain, a diacyl or more acyl chains, and the head group of the lipid typically carries the positive charge.
  • a cationic lipid or lipid-like material has a net positive charge only at certain pH, in particular acidic pH, while it has preferably no net positive charge, preferably has no charge, i.e., it is neutral, at a different, preferably higher pH such as physiological pH.
  • This ionizable behavior is thought to enhance efficacy through helping with endosomal escape and reducing toxicity as compared with particles that remain cationic at physiological pH.
  • a "cationically ionizable lipid” refers to a lipid or lipid-like material which has a net positive charge or is neutral, i.e., a lipid which is not permanently cationic. Thus, depending on the pH of the composition in which the cationically ionizable lipid is solved, the cationically ionizable lipid is either positively charged or neutral.
  • the cationically ionizable lipid comprises a head group which includes at least one nitrogen atom (N) which is positive charged or capable of being protonated, preferably under physiological conditions.
  • N nitrogen atom
  • Examples of cationically ionizable lipids are disclosed, for example, in WO 2016/176330 and WO 2018/078053.
  • the cationically ionizable lipid has the structure of Formula
  • G 1 and G 2 are each independently unsubstituted C 1 -C 12 alkylene or C 2 -C 12 alkenylene;
  • G 3 is C 1 -C 24 alkylene, C 2 -C 24 alkenylene, C 3 -C8 cycloalkylene, C 3 -C 8 cycloalkenylene;
  • R a is H or C 1 -C 12 alkyl
  • R 1 and R 2 are each independently C 6 -C 24 alkyl or C 6 -C 24 alkenyl
  • R 4 is C 1 -C 12 alkyl
  • R 5 is H or C 1 -C 6 alkyl; and x is 0, 1 or 2.
  • the lipid has one of the following structures (IA) or (IB): wherein:
  • A is a 3 to 8-membered cycloalkyl or cycloalkylene group
  • R 6 is, at each occurrence, independently H, OH or C 1 -C 24 alkyl; n is an integer ranging from 1 to 15.
  • the lipid has structure (IA), and in other embodiments, the lipid has structure (IB).
  • the lipid has one of the following structures (IC) or (ID): wherein y and z are each independently integers ranging from 1 to 12.
  • the lipid has one of the following structures (IE) or (IF):
  • the lipid has one of the following structures (IG),
  • n is an integer ranging from 2 to 12, for example from 2 to 8 or from 2 to 4.
  • n is 3, 4, 5 or 6.
  • n is 3.
  • n is 4.
  • n is 5.
  • n is 6.
  • y and z are each independently an integer ranging from 2 to 10.
  • y and z are each independently an integer ranging from 4 to 9 or from 4 to 6.
  • R 6 is H. In other of the foregoing embodiments, R 6 is C 1 -C 24 alkyl. In other embodiments, R 6 is OH.
  • G 3 is unsubstituted. In other embodiments, G 3 is substituted. In various different embodiments, G 3 is linear C 1 -C 24 alkylene or linear C 2 -C 24 alkenylene.
  • R 1 or R 2 is C 6 -C 24 alkenyl.
  • R 1 and R 2 each, independently have the following structure: wherein:
  • R 7a and R 7b are, at each occurrence, independently H or C 1 -C 12 alkyl; and a is an integer from 2 to 12, wherein R 7a , R 7b and a are each selected such that R 1 and R 2 each independently comprise from 6 to 20 carbon atoms.
  • a is an integer ranging from 5 to 9 or from 8 to 12.
  • At least one occurrence of R 7a is H.
  • R 7a is H at each occurrence.
  • at least one occurrence of R 7b is C 1 -C 8 alkyl.
  • C 1 -C 8 alkyl is methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, tert-butyl, n-hexyl or n-octyl.
  • R 1 or R 2 has one of the following structures:
  • R 4 is methyl or ethyl.
  • the cationic lipid of Formula (I) has one of the structures set forth below. Representative Compounds of Formula (I).
  • the canonical ly ionizable lipid has one of the structures set forth in the table below.
  • the cationically ionizable lipid is selected from the group consisting of N,N-dimethyl-2,3-dioleyloxypropylamine (DODMA), l,2-dioleoyl-3-dimethylammonium-propane (DODAP), heptatriaconta-6,9,28,3 l-tetraen-19-yl-4-(dimethylamino)butanoate (DLin-MC3-DMA), and 4-((di((9Z, 12Z)-octadeca-9, 12-dien- 1 -yl)amino)oxy)-N,N-dimethyl-4-oxobutan-l -amine (DPL- 14).
  • DODMA N,N-dimethyl-2,3-dioleyloxypropylamine
  • DODAP l,2-dioleoyl-3-dimethylammonium-propane
  • cationically ionizable lipids include, but are not limited to, 3-(N-(N',N'- dimethylaminoethane)-carbamoyl)cholesterol (DC-Chol), 1 ,2-dioleoyl-3-dimethylammonium-propane (DODAP); l,2-diacyloxy-3-dimethylammonium propanes; l,2-dialkyloxy-3-dimethylammonium propanes, l,2-distearyloxy-N,N-dimethyl-3-aminopropane (DSDMA), 1 ,2-dilinoleyloxy-N,N- dimethylaminopropane (DLinDMA), l,2-dilinolenyloxy-N,N-dimethylaminopropane (DLenDMA), dioctadecylamidoglycyl spermine (DOGS), 3-dimethylamino-2-(cholester
  • DOcarbDAP 2,3-Dilinoleoyloxy-N,N-dimethylpropylamine
  • DLincarbDAP 1,2-N,N'- Dilinoleylcarbamyl-3-dimethylaminopropane
  • DLinCDAP 1,2-Dilinoleoylcarbamyl-3- dimethylaminopropane
  • DLinCDAP 2,2-dilinoleyl-4-dimethylaminomethyl-[l,3]-dioxolane
  • DLin- K-DMA 2,2-dilinoleyl-4-dimethylaminoethyl-[l,3]-dioxolane
  • DLin-KC2-DMA 2,2-dilinoleyl- 4-(2-dimethylaminoethyl)-[l ,3]-dioxolane
  • DLin-KC2-DMA 2,2-dilinoleyl- 4-(2-dimethylaminoeth
  • the cationically ionizable lipid may comprise from about 10 mol % to about 100 mol %, about 20 mol % to about 100 mol %, about 30 mol % to about 100 mol %, about 40 mol % to about 100 mol %, or about 50 mol % to about 100 mol % of the total lipid present in the particle.
  • the particles (in particular the RNA LNPs) described herein comprise a cationically ionizable lipid and one or more additional lipids
  • the cationically ionizable lipid comprises from about 10 mol % to about 80 mol %, from about 20 mol % to about 60 mol %, from about 25 mol % to about 55 mol %, from about 30 mol % to about 50 mol %, from about 35 mol % to about 45 mol %, or about 40 mol % of the total lipid present in the particles.
  • the particles (in particular the RNA LNPs) described herein comprise from 40 to 55 mol percent, from 40 to 50 mol percent, from 41 to 49 mol percent, from 41 to 48 mol percent, from 42 to 48 mol percent, from 43 to 48 mol percent, from 44 to 48 mol percent, from 45 to 48 mol percent, from 46 to 48 mol percent, from 47 to 48 mol percent, or from 47.2 to 47.8 mol percent of the cationically ionizable lipid.
  • the particles comprise about 47.0, 47.1, 47.2, 47.3, 47.4, 47.5, 47.6, 47.7, 47.8, 47.9 or 48.0 mol percent of the cationically ionizable lipid.
  • RNA LNPs may also comprise lipids or lipid-like materials other than cationically ionizable lipids, i.e., non-cationic lipids or lipid-like materials (including non- cationically ionizable lipids or lipid-like materials).
  • non-cationic lipids or lipid-like materials including non- cationically ionizable lipids or lipid-like materials.
  • anionic and neutral lipids or lipid-like materials are referred to herein as non-cationic lipids or lipid-like materials.
  • Optimizing the formulation of nucleic acid particles by addition of other hydrophobic moieties, such as cholesterol and lipids, in addition to a cationically ionizable lipid may enhance particle stability and efficacy of nucleic acid delivery.
  • lipid and "lipid-like material” are broadly defined herein as molecules which comprise one or more hydrophobic moieties or groups and optionally also one or more hydrophilic moieties or groups. Molecules comprising hydrophobic moieties and hydrophilic moieties are also frequently denoted as amphiphiles. Lipids are usually poorly soluble in water. In an aqueous environment, the amphiphilic nature allows the molecules to self-assemble into organized structures and different phases. One of those phases consists of lipid bilayers, as they are present in vesicles, multilamellar/unilamellar liposomes, or membranes in an aqueous environment.
  • Hydrophobicity can be conferred by the inclusion of apolar groups that include, but are not limited to, long-chain saturated and unsaturated aliphatic hydrocarbon groups and such groups substituted by one or more aromatic, cycloaliphatic, or heterocyclic group(s).
  • the hydrophilic groups may comprise polar and/or charged groups and include carbohydrates, phosphate, carboxylic, sulfate, amino, sulfhydryl, nitro, hydroxyl, and other like groups.
  • amphiphilic refers to a molecule having both a polar portion and a non-polar portion. Often, an amphiphilic compound has a polar head attached to a long hydrophobic tail. In some embodiments, the polar portion is soluble in water, while the non-polar portion is insoluble in water. In addition, the polar portion may have either a formal positive charge, or a formal negative charge. Alternatively, the polar portion may have both a formal positive and a negative charge, and be a zwitterion or inner salt.
  • the amphiphilic compound can be, but is not limited to, one or a plurality of natural or non-natural lipids and lipid-like compounds.
  • lipid-like material lipid-like compound or “lipid-like molecule” relates to substances that structurally and/or functionally relate to lipids but may not be considered as lipids in a strict sense.
  • the term includes compounds that are able to form amphiphilic layers as they are present in vesicles, multilamellar/unilamellar liposomes, or membranes in an aqueous environment and includes surfactants, or synthesized compounds with both hydrophilic and hydrophobic moieties.
  • the term refers to molecules, which comprise hydrophilic and hydrophobic moieties with different structural organization, which may or may not be similar to that of lipids.
  • the term “lipid” is to be construed to cover both lipids and lipid-like materials unless otherwise indicated herein or clearly contradicted by context.
  • amphiphilic compounds that may be included in an amphiphilic layer include, but are not limited to, phospholipids, aminolipids and sphingolipids.
  • the amphiphilic compound is a lipid.
  • lipid refers to a group of organic compounds that are characterized by being insoluble in water, but soluble in many organic solvents. Generally, lipids may be divided into eight categories: fatty acids, glycerolipids, glycerophospholipids, sphingolipids, saccharolipids, polyketides (derived from condensation of ketoacyl subunits), sterol lipids and prenol lipids (derived from condensation of isoprene subunits). Although the term "lipid” is sometimes used as a synonym for fats, fats are a subgroup of lipids called triglycerides.
  • Lipids also encompass molecules such as fatty acids and their derivatives (including tri-, di-, monoglycerides, and phospholipids), as well as steroids, i.e., sterol-containing metabolites such as cholesterol or a derivative thereof.
  • cholesterol derivatives include, but are not limited to, cholestanol, cholestanone, cholestenone, coprostanol, cholesteryl-2'-hydroxyethyl ether, cholesteiyl-4'- hydroxybutyl ether, tocopherol and derivatives thereof, and mixtures thereof.
  • Fatty acids, or fatty acid residues are a diverse group of molecules made of a hydrocarbon chain that terminates with a carboxylic acid group; this arrangement confers the molecule with a polar, hydrophilic end, and a nonpolar, hydrophobic end that is insoluble in water.
  • the carbon chain typically between four and 24 carbons long, may be saturated or unsaturated, and may be attached to functional groups containing oxygen, halogens, nitrogen, and sulfur. If a fatty acid contains a double bond, there is the possibility of either a cis or trans geometric isomerism, which significantly affects the molecule's configuration. Cis-double bonds cause the fatty acid chain to bend, an effect that is compounded with more double bonds in the chain.
  • Other major lipid classes in the fatty acid category are the fatty esters and fatty amides.
  • Glycerolipids are composed of mono-, di-, and tri-substituted glycerols, the best-known being the fatty acid triesters of glycerol, called triglycerides.
  • the word "triaeylglycerol” is sometimes used synonymously with "triglyceride”.
  • the three hydroxyl groups of glycerol are each esterified, typically by different fatty acids.
  • Additional subclasses of glycerolipids are represented by glycosylglycerols, which are characterized by the presence of one or more sugar residues attached to glycerol via a glycosidic linkage.
  • the glycerophospholipids are amphipathic molecules (containing both hydrophobic and hydrophilic regions) that contain a glycerol core linked to two fatty acid-derived "tails" by ester linkages and to one "head” group by a phosphate ester linkage.
  • Examples of glycerophospholipids usually referred to as phospholipids (though sphingomyelins are also classified as phospholipids) are phosphatidylcholine (also known as PC, GPCho or lecithin), phosphatidylethanolamine (PE or GPEtn) and phosphatidylserine (PS or GPSer).
  • Sphingolipids are a complex family of compounds that share a common structural feature, a sphingoid base backbone.
  • the major sphingoid base in mammals is commonly referred to as sphingosine.
  • Ceramides N-acyl-sphingoid bases
  • the fatty acids are typically saturated or mono-unsaturated with chain lengths from 16 to 26 carbon atoms.
  • the major phosphosphingolipids of mammals are sphingomyelins (ceramide phosphocholines), whereas insects contain mainly ceramide phosphoethanolamines and fungi have phytoceramide phosphoinositols and mannose-containing headgroups.
  • the glycosphingolipids are a diverse family of molecules composed of one or more sugar residues linked via a glycosidic bond to the sphingoid base. Examples of these are the simple and complex glycosphingolipids such as cerebrosides and gangliosides.
  • Sterol lipids such as cholesterol and its derivatives, or tocopherol and its derivatives, are an important component of membrane lipids, along with the glycerophospholipids and sphingomyelins.
  • Saccharolipids describe compounds in which faty acids are linked directly to a sugar backbone, forming structures that are compatible with membrane bilayers. In the saccharolipids, a monosaccharide substitutes for the glycerol backbone present in glycerolipids and glycerophospholipids.
  • the most familiar saccharolipids are the acylated glucosamine precursors of the Lipid A component of the lipopolysaccharides in Gram-negative bacteria.
  • Typical lipid A molecules are disaccharides of glucosamine, which are derivatized with as many as seven faty-acyl chains.
  • the minimal lipopolysaccharide required for growth in E. coli is Kdo2 -Lipid A, a hexa-acylated disaccharide of glucosamine that is glycosylated with two 3-deoxy-D-manno-octulosonic acid (Kdo) residues.
  • Polyketides are synthesized by polymerization of acetyl and propionyl subunits by classic enzymes as well as iterative and multimodular enzymes that share mechanistic features with the faty acid synthases. They comprise a large number of secondary metabolites and natural products from animal, plant, bacterial, fungal and marine sources, and have great structural diversity. Many polyketides are cyclic molecules whose backbones are often further modified by glycosylation, methylation, hydroxylation, oxidation, or other processes.
  • lipids and lipid-like materials may be cationic, anionic or neutral.
  • Neutral lipids or lipid-like materials exist in an uncharged or neutral zwitterionic form at a selected pH.
  • Cationic or cationically ionizable lipids and lipid-like materials may be used to electrostatically bind RNA.
  • Cationically ionizable lipids and lipid-like materials are materials that are preferably positively charged only at acidic pH. This ionizable behavior is thought to enhance efficacy through helping with endosomal escape and reducing toxicity as compared with particles that remain cationic at physiological pH.
  • the particles may also comprise non-cationic lipids or lipid-like materials. Collectively, anionic and neutral lipids or lipid-like materials are referred to herein as non-cationic lipids or lipid-like materials.
  • Optimizing the formulation of RNA particles by addition of other hydrophobic moieties, such as cholesterol and lipids, in addition to an ionizable/cationic lipid or lipid-like material enhances particle stability and can significantly enhance efficacy of RNA delivery.
  • the or more additional lipids may be incorporated which may or may not affect the overall charge of the nucleic acid particles.
  • the or more additional lipids are a non-cationic lipid or lipid-like material.
  • the non-cationic lipid may comprise, e.g., one or more anionic lipids and/or neutral lipids.
  • an "anionic lipid” refers to any lipid that is negatively charged at a selected pH.
  • a neutral lipid refers to any of a number of lipid species that exist either in an uncharged or neutral zwitterionic form at a selected pH.
  • the nucleic acid particles (especially the RNA LNPs) described herein comprise a cationically ionizable lipid and one or more additional lipids.
  • the amount of the cationically ionizable lipid compared to the amount of the one or more additional lipids may affect important nucleic acid particle characteristics, such as charge, particle size, stability, tissue selectivity, and bioactivity of the nucleic acid. Accordingly, in some embodiments, the molar ratio of the cationically ionizable lipid to the one or more additional lipids is from about 10:0 to about 1:9, about 4:1 to about 1:2, or about 3:1 to about 1:1.

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Abstract

La présente invention concerne d'une manière générale le domaine des compositions de nanoparticules lipidiques (NPL) comprenant de l'ARN, des procédés de préparation et de stockage de telles compositions et l'utilisation de telles compositions en thérapie.
PCT/EP2021/059460 2020-11-16 2021-04-12 Compositions de npl comprenant de l'arn et procédés de préparation, de stockage et d'utilisation de celles-ci WO2022218503A1 (fr)

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PCT/EP2021/059460 WO2022218503A1 (fr) 2021-04-12 2021-04-12 Compositions de npl comprenant de l'arn et procédés de préparation, de stockage et d'utilisation de celles-ci
US18/036,677 US20230414747A1 (en) 2020-11-16 2021-11-15 Lnp compositions comprising rna and methods for preparing, storing and using the same
EP21807117.3A EP4243788A1 (fr) 2020-11-16 2021-11-15 Compositions de lnp comprenant de l'arn et procédés de préparation, de stockage et d'utilisation de celles-ci
CA3198742A CA3198742A1 (fr) 2020-11-16 2021-11-15 Compositions de lnp comprenant de l'arn et procedes de preparation, de stockage et d'utilisation de celles-ci
PCT/EP2021/081675 WO2022101470A1 (fr) 2020-11-16 2021-11-15 Compositions de lnp comprenant de l'arn et procédés de préparation, de stockage et d'utilisation de celles-ci
IL302771A IL302771A (en) 2020-11-16 2021-11-15 lnp compositions containing RNA and methods for their preparation, storage and use
JP2023528666A JP2023549266A (ja) 2020-11-16 2021-11-15 Ｒｎａを含むｌｎｐ組成物ならびにそれを調製、貯蔵および使用する方法
TW110142348A TW202237148A (zh) 2020-11-16 2021-11-15 包含rna之lnp組合物以及製備、儲存及使用彼之方法
MX2023005696A MX2023005696A (es) 2020-11-16 2021-11-15 Composiciones de lnp que comprenden arn y metodos para preparar, almacenar y usar las mismas.
AU2021379090A AU2021379090A1 (en) 2020-11-16 2021-11-15 Lnp compositions comprising rna and methods for preparing, storing and using the same
KR1020237020261A KR20230121752A (ko) 2020-11-16 2021-11-15 Rna를 포함하는 lnp 조성물 및 이를 제조, 보관 및 사용하는 방법
AU2022256732A AU2022256732A1 (en) 2021-04-12 2022-04-11 Rna compositions comprising a buffer substance and methods for preparing, storing and using the same
JP2024505491A JP2024514364A (ja) 2021-04-12 2022-04-11 緩衝物質を含むｒｎａ組成物ならびにその製造、保存および使用のための方法
CA3215103A CA3215103A1 (fr) 2021-04-12 2022-04-11 Compositions d'arn comprenant une substance tampon et procedes de preparation, de stockage et d'utilisation de celles-ci
PCT/EP2022/059555 WO2022218891A2 (fr) 2021-04-12 2022-04-11 Compositions d'arn comprenant une substance tampon et procédés de préparation, de stockage et d'utilisation de celles-ci
EP22719594.8A EP4322925A2 (fr) 2021-04-12 2022-04-11 Compositions d'arn comprenant une substance tampon et procédés de préparation, de stockage et d'utilisation de celles-ci

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114989182A (zh) * 2022-06-23 2022-09-02 尧唐(上海)生物科技有限公司 脂质化合物、包含其的组合物及应用

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036366A2 (fr) 2005-09-28 2007-04-05 Johannes Gutenberg-Universität Mainz, Vertreten Durch Den Präsidenten Modifications d'arn, qui permettent une stabilite de transcription et une efficacite de translation ameliorees
WO2016005324A1 (fr) 2014-07-11 2016-01-14 Biontech Rna Pharmaceuticals Gmbh Stabilisation de séquences d'adn codant pour une séquence poly (a)
WO2016176330A1 (fr) 2015-04-27 2016-11-03 The Trustees Of The University Of Pennsylvania Arn à nucléoside modifié destiné à induire une réponse immunitaire adaptative
WO2017075531A1 (fr) * 2015-10-28 2017-05-04 Acuitas Therapeutics, Inc. Nouveaux lipides et nouvelles formulations de nanoparticules de lipides pour l'administration d'acides nucléiques
WO2017182524A1 (fr) 2016-04-22 2017-10-26 Biontech Rna Pharmaceuticals Gmbh Procédés de production d'arn simple brin
WO2017218704A1 (fr) * 2016-06-14 2017-12-21 Modernatx, Inc. Formulations stabilisées de nanoparticules lipidiques
WO2018078053A1 (fr) 2016-10-26 2018-05-03 Curevac Ag Vaccins à arnm à nanoparticules lipidiques
WO2020072605A1 (fr) * 2018-10-02 2020-04-09 Intellia Therapeutics, Inc. Lipides aminés ionisables
WO2021154763A1 (fr) * 2020-01-28 2021-08-05 Modernatx, Inc. Vaccins à arn contre le coronavirus
WO2021160766A1 (fr) * 2020-02-11 2021-08-19 Pantherna Therapeutics Gmbh Composition lipidique et son utilisation pour l'administration d'un agent thérapeutiquement actif à l'endothélium

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036366A2 (fr) 2005-09-28 2007-04-05 Johannes Gutenberg-Universität Mainz, Vertreten Durch Den Präsidenten Modifications d'arn, qui permettent une stabilite de transcription et une efficacite de translation ameliorees
WO2016005324A1 (fr) 2014-07-11 2016-01-14 Biontech Rna Pharmaceuticals Gmbh Stabilisation de séquences d'adn codant pour une séquence poly (a)
WO2016176330A1 (fr) 2015-04-27 2016-11-03 The Trustees Of The University Of Pennsylvania Arn à nucléoside modifié destiné à induire une réponse immunitaire adaptative
WO2017075531A1 (fr) * 2015-10-28 2017-05-04 Acuitas Therapeutics, Inc. Nouveaux lipides et nouvelles formulations de nanoparticules de lipides pour l'administration d'acides nucléiques
WO2017182524A1 (fr) 2016-04-22 2017-10-26 Biontech Rna Pharmaceuticals Gmbh Procédés de production d'arn simple brin
WO2017218704A1 (fr) * 2016-06-14 2017-12-21 Modernatx, Inc. Formulations stabilisées de nanoparticules lipidiques
WO2018078053A1 (fr) 2016-10-26 2018-05-03 Curevac Ag Vaccins à arnm à nanoparticules lipidiques
WO2020072605A1 (fr) * 2018-10-02 2020-04-09 Intellia Therapeutics, Inc. Lipides aminés ionisables
WO2021154763A1 (fr) * 2020-01-28 2021-08-05 Modernatx, Inc. Vaccins à arn contre le coronavirus
WO2021160766A1 (fr) * 2020-02-11 2021-08-19 Pantherna Therapeutics Gmbh Composition lipidique et son utilisation pour l'administration d'un agent thérapeutiquement actif à l'endothélium

Non-Patent Citations (18)

* Cited by examiner, † Cited by third party
Title
"A multilingual glossary of biotechnological terms: (IUPAC Recommendations", HELVETICA CHIMICA ACTA, 1995
"Molecular Cloning: A Laboratory Manual", 1989, COLD SPRING HARBOR LABORATORY PRESS
"Variant Under Investigation", December 2020, PUBLIC HEALTH ENGLAND
B.H. ZIMM, J. CHEM. PHYS., vol. 13, 1945, pages 141
BUCHHOLZ ET AL., ELECTROPHORESIS, vol. 22, 2001, pages 4118 - 4128
FUTURE MICROBIOL., vol. 4, 2009, pages 837 - 856
GOULD ET AL., ANTIVIRAL RES., vol. 87, 2010, pages 111 - 124
HOLTKAMP ET AL., BLOOD, vol. 108, 2006, pages 4009 - 4017
KACZMAREK, J. C. ET AL., GENOME MEDICINE, vol. 9, 2017, pages 60
KOPPEL, D., J. CHEM. PHYS., vol. 57, 1972, pages 4814 - 4820
MARCH: "Remington's Pharmaceutical Sciences", 1985, MACK PUBLISHING CO.
NEDDLEMANWUNSCH, J. MOL. BIOL., vol. 48, 1970, pages 443
P. DEBYE, J. APPL. PHYS., vol. 15, 1944, pages 338
PEARSONLIPMAN, PROC. NATL ACAD. SCI. USA, vol. 88, 1988, pages 2444
S. M. BERGE ET AL.: "Pharmaceutical Salts", J. PHARM. SCI., vol. 66, 1977, pages 1 - 19, XP002675560, DOI: 10.1002/jps.2600660104
SMITHWATERMAN, ADS APP. MATH, vol. 2, 1981, pages 482
STREITWIESERHEATHCOOK: "Organische Chemie", 1995, DEUTSCHER VERLAG DER WISSENSCHAFTEN
W. BURCHARD, ANAL. CHEM., vol. 75, 2003, pages 4279 - 4291

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114989182A (zh) * 2022-06-23 2022-09-02 尧唐(上海)生物科技有限公司 脂质化合物、包含其的组合物及应用

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