EP3468566A1 - Diéthers d'archaea lipides synthétiques - Google Patents
Diéthers d'archaea lipides synthétiquesInfo
- Publication number
- EP3468566A1 EP3468566A1 EP17735199.6A EP17735199A EP3468566A1 EP 3468566 A1 EP3468566 A1 EP 3468566A1 EP 17735199 A EP17735199 A EP 17735199A EP 3468566 A1 EP3468566 A1 EP 3468566A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mage
- liposome
- lpr
- integer
- gage
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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Classifications
-
- 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
- A61K39/39—Medicinal preparations containing antigens or antibodies characterised by the immunostimulating additives, e.g. chemical adjuvants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
-
- 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
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer 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
- A61K9/10—Dispersions; Emulsions
- A61K9/127—Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant
- A61K9/1271—Non-conventional liposomes, e.g. PEGylated liposomes or liposomes coated or grafted with polymers
-
- 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
- A61K9/10—Dispersions; Emulsions
- A61K9/127—Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant
- A61K9/1271—Non-conventional liposomes, e.g. PEGylated liposomes or liposomes coated or grafted with polymers
- A61K9/1272—Non-conventional liposomes, e.g. PEGylated liposomes or liposomes coated or grafted with polymers comprising non-phosphatidyl surfactants as bilayer-forming substances, e.g. cationic lipids or non-phosphatidyl liposomes coated or grafted with polymers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
- A61P37/04—Immunostimulants
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
- C07H15/02—Acyclic radicals, not substituted by cyclic structures
- C07H15/04—Acyclic radicals, not substituted by cyclic structures attached to an oxygen atom of the saccharide radical
- C07H15/08—Polyoxyalkylene derivatives
-
- 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
Definitions
- the present invention relates to the field of liposomes, their lipid compounds and their pharmaceutical uses.
- the present invention relates to the production of novel synthetic compounds and the formulation of novel liposomes comprising at least one of these compounds for vaccine use.
- Liposomes are a very effective way to deliver a molecule of interest into cells. Liposomes represent, for example, an alternative to viral vectors for the delivery of nucleic acids. They also have a major therapeutic interest in oncology. In addition to being used as drug vectors, liposomes are indeed developed for a therapeutic vaccination aimed at inducing an immune response against tumor cells.
- the so-called conventional liposomes consist mainly of phosphoiipids similar to those present in the membranes of bacteria or eukaryotic cells.
- the medical use of these liposomes can however be limited by stability problems and targeting problems.
- the liposomes In order to be administered orally or by blood, the liposomes must indeed withstand an acid environment and / or interactions with the proteins and lipoproteins of the blood.
- the liposomes must be recognized by the cells for which the molecules they transport are intended.
- the liposomes used as vaccination vectors must be recognized and standardized by the antigen presenting cells so that they can induce a specific immune response to the antigen delivered by the liposomes.
- lipid ethers or archaeo lipids.
- These lipids naturally present in the membranes of archaebacteria, are characterized by the presence of ether bonds linking the phytosanitary aliphatic chains that constitute them to a glycerol.
- the lipids present in the membranes of archaebacteria are therefore generally diethers or tetraethers of phytanois.
- the structure of lipid ethers plays an important role in the resistance of archaebacteria to extreme conditions.
- liposomes comprising these lipids also known as archaeosomes, generally possess increased stability to oxidative stress, high temperatures, acidic or alkaline conditions, the action of phospholipases, bile salts and serum proteins (Patei GB , Sprott GD, Archaeobacterial ether lipid liposomes (archeosomes) as novel vaccines and drug delivery systems, Crit Rev Biotechnol 1999; 19: 317-357).
- WO9308202 thus describes archaeosomes with increased stability obtained from the total polar lipids extracted from archaebacteria.
- CA2269502 discloses lipids derived from tetraethers and liposomes comprising them.
- WO2006061396 discloses tetraethers of synthetic lipids analogous to those present in archaebacteria membranes and liposomes incorporating these lipid tetraethers. In addition to their increased stability, archaeosomes also have the advantage of having an intrinsic adjuvant effect, independent of any molecule they can carry.
- WO0126683 thus describes in vitro and in vivo enetivation of macrophages and mouse dendritic cells by empty archaeosomes consisting of total polar lipids extracted from archaebacteria.
- liposomes comprising such compounds having a polar sugar moiety can be recognized by the lectin receptors of antigen presenting cells (Benvegnu et al., Glycolipid-based nanosystems for delivery of drugs, genes and vaccine adjuvant applications, Carbohydr. ., 2014, 40: 341-377).
- Espuelas et al. Glycolipid-based nanosystems for delivery of drugs, genes and vaccine adjuvant applications, Carbohydr. ., 2014, 40: 341-377.
- DOG dioleylglycerol synthetic lipid
- liposomes comprising these compounds can target and be fixed by human immature dendnestic cells but are not capable of inducing alone the expression of the CD83, CD86 and HLA-DR surface markers of these cells.
- the compounds described by Espueias et al. Do not confer an intrinsic adjuvant effect on the liposomes which contain them.
- WO2007112567 discloses diethers or tetraethers of semisynthetic lipids comprising only phytanyl chains obtained from total polar lipid extracts of archaebacteria. After isolation, these lipids are attached to sugar groups and the compounds obtained are used in the preparation of archaeosomes.
- the present invention thus relates to synthetic compounds comprising a lipid diether bound to a. sugar group and liposomes comprising these compounds.
- the compounds of the invention are characterized by the presence of a branched aliphatic chain and an unsubstituted linear aliphatic chain and by the presence of a glycoside group grafted to the lipid diether via a PEG spacer.
- the synthetic compounds of the invention confer on the liposomes which comprise them an intrinsic adjuvant effect in vitro and in vivo.
- the present invention thus relates to a compound of formula I:
- a represents an integer from 1 to 9;
- b represents an integer of 1 to 3;
- c represents an integer from 1 to 130, preferably from 5 to 20;
- Ri, Ri 'and Ri are identical or different, independently represent an H, or a group of the type:
- R2 and R2 ' are the same or different, each independently represents H or a sugar residue selected from the list comprising mannose, glucose, fucose, oligomannoses comprising from 2 to 10 mannose units, glycans terminated by a mannose , fucose-terminated glycans, 3'-sulfo-Lewis a trisaccharide, Lewis b (Le b ) trisaccharide, Lewis x (Le x ) trisaccharide, N-acetylglucosamine tri (tri-GIcNAc), PIMs ( phosphatidylinositol mannosides), in particular the PIMi with PIMe (phosphatidylinositol mono- to hexa-mannoside), the oligosaccharide Man9GlcNAc2, the mannose-rich N-linked oligosaccharides, the oligosaccharide ⁇ -fucose-4G!
- cNAc the oligosaccharide iacto- N-fucopentaose III containing the Le x trisaccharide, the GlcNAc2 Man 3 oligosaccharide, the Man 4 oligosaccharides, the Manal-3 (Mana-6) Manal oligosaccharide, the lipoarabinomannanes (LAMs), the mannosylated lipoarabinomannans (ManLAMs) ;
- LAMs lipoarabinomannanes
- ManLAMs mannosylated lipoarabinomannans
- d represents an integer of 0 to 5; provided that at least one of R 2 and R 2 'is different from H and that R2 is different from H when R2' is absent;
- a represents an integer from 1 to 9;
- b represents an integer of 1 to 3;
- c represents an integer from 1 to 130, preferably from 5 to 20;
- Ri, Ri 'and Ri are identical or different, each independently represent an H or group 1
- d represents an integer of 0 to 5;
- R2 and R2 ' are the same or different, each independently represents marmose, glucose, fucose, or oligomarmoses comprising from 2 to 10 mannose units,
- the present invention relates to a compound of formula I:
- a represents an integer from 1 to 9;
- b represents an integer of 1 to 3;
- c represents an integer from 1 to 130, preferably from 5 to 20;
- R 1, R 1 and R 1 are identical or different, independently represent an H or the group:
- d represents an integer of 0 to 5;
- R2 and R2 ' represent the grouping:
- the present invention also relates to a compound of formula II:
- c represents an integer from 1 to 130, preferably from 5 to
- d represents an integer from 1 to 5, preferably 2, according to one embodiment, the present invention relates to the compound of formula II:
- the present invention also relates to a liposome comprising at least one compound according to the invention.
- the liposome of the invention comprises at least one compound of the invention in proportions of from about 1% to about 15% by molar percentage relative to the total number of moles of lipids, preferably from about 2% to about 10%, more preferably about 5%.
- the present invention also relates to a liposome of the invention further comprising at least one molecule of interest.
- the molecule of interest included in the liposome of the invention is capable of inducing an immune reaction.
- the molecule of interest included in the liposome of the invention is a nucleic acid. According to one embodiment, the molecule of interest included in the liposome of the invention is a cancer-associated antigen or a nucleic acid encoding a cancer-associated antigen.
- the molecule of interest is a cancer-associated antigen selected from the group comprising: CAP-1, CD 4 / m, cell surface proteins of the Claudine CLAUDIN-6 family, CLAUDIN-18.2 and CLAUDIN -12, c-myc, CT, GnT-V, HAGE, HAST-2, LAGE, NF 1, NY-BR-1, proteinase 3, SAGE, SCGB3A2, SCP1, SCP2, SCP3, SSX, SURVrVin, TPI / m , TPTE, CDK4 (cy clinin kinase 4), plS1 !
- Pml-RARaTEL / AMLI NY-ESO-I
- members of the MAGE (Melanoma-associated aniigen) family M AGE-A1, MAGE-A2, M AGE-A3, MAGE-A4, MAGE-A5, MAGE-A6, MAGE-A7, MAGE-A8, MAGE-A9, MAGE -Al 0, M AGE-A1, MAGE-A12, MAGE-B, MAGE-C, BAGE, DAM-6, DAM- 10.
- the present invention also relates to a compound according to the invention for use as a vaccine adjuvant.
- the present invention relates to a liposome comprising at least one compound according to the invention for use as a vaccine adjuvant.
- the present invention also relates to a liposome comprising at least one compound of the invention and further comprising at least one molecule of interest capable of inducing an immune reaction for its use as a vaccine.
- the present invention also relates to a pharmaceutical composition comprising the compound according to the invention and at least one pharmaceutically acceptable excipient.
- the present invention relates to the liposome according to the invention and at least one pharmaceutically acceptable excipient.
- adjuvant refers to a molecule that stimulates the immune response to an antigen and / or modulates it to achieve the expected response.
- adjuvants in the vaccine formulations is intended to improve, accelerate and prolong the specific immune response directed against the antigen (s) included in these vaccine formulations.
- the benefits of adjuvants include improving the immunogenicity of antigens, modifying the nature of the immune response, reducing the amount of antigen (s) required to induce effective immunization, reducing the frequency of immunizations booster and improved immune response in elderly and immunocompromised individuals.
- Antigen refers to any molecule that can initiate in a subject a cellular and / or humoral immune response.
- Dendritic cells refers to antigen presenting cells of the immune system that under certain conditions have cytoplasmic extensions called dendrites. The function of the dendritic cells is notably to trigger the adaptive immune response induced in response to an antigen.
- Lipid diether relates in the present invention a glycerol on which two alcohol functions are engaged in ether bonds with lipids,
- “Pharmaceutically acceptable excipient” refers to an inert vehicle or carrier used as a solvent or diluent in which the pharmaceutically active agent is formulated and / or administered, and which does not produce an adverse, allergic or other reaction when administered to an animal, preferably a human being. This includes all solvents, dispersion media, coatings, antibacterial and antifungal agents, isotonic agents, absorption delaying agents and other similar ingredients.
- preparations must meet standards of sterility, general safety and purity, as required by regulatory authorities, such as, for example, the Food and Drug Administration (FDA) or the European Medicines Agency (PEMA). ).
- Crosscan refers to a polymer composed of monosaccharides linked together by a glycosidic bond.
- glycoside refers to a sugar group attached to another non-sugar function by a glycosidic linkage.
- the sugar group also called sugar residue, may be a simple sugar (a monosaccharide) or may contain several sugars (an oligosaceharide or a polysaccharide).
- Immunogen relates to a molecule inducing an immune response in the subject to whom it is administered
- Lectin refers to a protein that specifically and reversibly binds to certain carbohydrates.
- lectins those present on the surface of certain immune cells are type C lectins.
- Lipid relates to a linear or branched, saturated, unsaturated or polyunsaturated carbon chain
- LPD Lipid - Polycation - DNA
- LPR Lipid - ⁇ Polycation - RNA
- “Liposome” relates to a vesicle formed of a bilayer of amphiphilic lipids containing an aqueous medium.
- the polar heads of the amphiphilic lipids are grouped together and are directed either towards the aqueous external medium or towards the aqueous internal medium.
- the hydrophobic tails are buried inside the bilayer so as to minimize their interaction with an aqueous medium.
- Adaptive immune response refers, after the administration of a vaccine, to the development in a subject of a specific cellular and / or humoral response (mediated by antibodies).
- Adaptive immune response generally includes, but is not limited to, one or more of the following effect (s): production of antibodies, B-cells, helper T-cells, and / or cytotoxic T lymphocytes, specifically directed against one or more antigen (s) included in the vaccine.
- the vaccinated subject will develop a protective or therapeutic adaptive immune response such that its resistance to infection will be increased and / or the severity of the disease will be reduced.
- “Sugar” in the present invention may refer to a simple sugar or a simple sugar polymer.
- Simple sugars also called monosaccharides or oses, are polyhydroxy aldehydes or polyhydroxy ketones. Glucose, mannose, ribulose and fructose are some examples of simple sugars.
- the simple sugar polymers can be distinguished into oligosaccharides, comprising from 2 to 20 osteoside residues and polysaccharides, comprising more than 20 saccharide residues.
- Subject refers to an animal, preferably a human being.
- a subject may be a patient, namely a person receiving medical care, undergoing or having undergone medical treatment, or monitored as part of the development of a disease.
- Vaccine refers to any preparation comprising a substance or a group of substances inducing in a subject an immune response directed against an infectious agent, for example a bacterium (e.g.
- Haemophilus influenzae type b Hib
- Streptococcus pneumoniae Neisseria meningitidis, Corynebacterium diphtheriae, Ciostridium tetani, Bordatella periussis, Vibrio cholerae, Salmonella typhi
- a virus eg influenza virus (influenza), chickenpox, hepatitis A, hepatitis B, immunodeficiency virus human (HIV), papillornavirus or poliovirus
- Prophylactic vaccines are administered to prevent a subject from contracting a disease or to mitigate the disease if the disease is contracted.
- Such vaccines generally comprise either an infectious agent (inactivated, or live but attenuated), or fragments of an infectious agent (such as surface molecules from the infectious agent) or toxins produced by the infectious agent. obtained by purification or genetic engineering.
- Therapeutic vaccines are intended for the treatment of specific diseases, such as, for example, cancers.
- Such vaccines comprise one or more tumor antigens and are intended in particular to induce a T cell-mediated, tumor-directed immune response that expresses the antigen (s).
- the present invention relates to a compound comprising:
- one of the aliphatic chains is a branched chain in which the number of carbon atoms of the linear chain is between 12 and 20, preferentially between 16 and 20, this number not including the branched carbons, and the other aliphatic chain is an unsubstituted linear chain in which the number of carbons is between 12 and 20, preferably between 16 and 20 ;
- hydrophilic group selected from the list comprising mannose-terminated glycans, fucose-terminated glycans, 3'-sulfo-Lewis trisaceharide, Lewis trisaccharide b (Le b ), Lewis x trisaccharide (Le x ), tri N-acerylglucosamine (tri-GlcNAc), PIMs (phosphatidylinositol mamiosides), in particular PIMi at PIMe (phosphatidylinositol mono- to hexa-mannoside) ), the Man9GlcNAc2 oligosaccharide, the mannose-rich N-linked oligosaccharides, the ⁇ -fucose-4GlcNAc oligosaccharide, the lacto-N-fucopentaose III oligosaccharide containing the Le x trisaccharide, the GlcNAc2 Mail 3 oli
- a [PEG] spacer separating the hydrophilic group from the aliplicial chains in which m is between 1 and 130, preferably between 5 and 20.
- the present invention relates to a compound of formula I:
- a represents an integer from 1 to 9;
- b represents an integer of 1 to 3;
- c represents an integer from 1 to 130, preferably from 5 to 20;
- Ri, Ri 'and Ri are identical or different, each independently represent an H, or a group of the type:
- R2 and R2 ' are the same or different, each independently represents H or a sugar residue selected from the list comprising mannose, glucose, fueose, oligomannoses comprising from 2 to 10 mannose units, glycans terminated by a mannose, fueose-terminated glycans, 3'-sulfo-Lewis trisaccharide, Lewis b (Le b ) trisaccharide, Lewis x (Le *) trisaccharide, N-acetylglucosamine tri (tri-GlcNAc), PIMs (phosphatidylinositol mannosides), in particular PIMi to PIM0 (phosphatidylinositol mono- to hexa-mannoside), oligosaccharide Man9GlcNAc2, mannose-rich N-linked oligosaccharides, roligosacciiaride a-fucose-1-4GlcNAc,
- d represents an integer of 0 to 5;
- R2 and R2 ' are different from H and R2 is different from H when R2' is absent;
- the present invention relates to a compound of formula I:
- a represents an integer from 1 to 9;
- b represents an integer of 1 to 3;
- c represents an integer from 1 to 130, preferably from 5 to 20;
- R 1, R 1 'and R 1 are identical or different, each independently represent an H or the group:
- R2 and R2 ' are identical or different, each independently represents an H or a sugar residue selected from the list comprising mannose, glucose, fucose, origomannoses comprising from 2 to 10 mannose units, glvcanes terminated by a mannose , glycans terminated fucose, trisaccharide 3 ' ⁇ sulfo-Lewis a, the trisaccharide Lewis b (Le b), the trisaccharide Lewis x (Le *), tri N-acetylglucosamine (tri-GlcNAc), the PIMS ( phosphatidylinositol mannosides), in particular PIMj with PIM0 (phosphatidylinositol mono-hexa-mannoside), Poligosaceharide ⁇ -fucose-1-4GlcNAc, lacto-N-fucopentaose oligosaccharide III containing the trisaccharide Le x
- d represents an integer of 0 to 5;
- the present invention relates to a compound of formula I:
- a is equal to 5;
- R 1, R 1 'and R 1 are identical or different, each independently represent an H or the group:
- R2 and 2 ' are the same or different, each independently represents H or a sugar residue selected from the list comprising mannose, glucose, fucose, oligomannose comprising from 2 to 10 mannose units, glvcanes terminated by a mannose , fucose-terminated glycans, 3'-sulfo-Lewis a trisaccharide, Lewis b trisaccharide (Le b ), Lewis x (Le *) trisaccharide, N-acetylglu-samine tri (tri-GlcNAc), PIMs.
- PIMj Phosphatidylinositol mannosides
- PIMj PIMj at ⁇ 0 (phosphatidylinositol mono- to hexa-mannoside)
- oligosaccharide Man9GlcNAc2 N-linked oligosaccharides rich in niamiose, a-fucose-l-4GlcNAc oligosaccharide, lactose-N-fucopentaose III oligosaccharide containing Le x trisaccharide, GlcNAc2 Mail 3 oligosaccharide, Man 4 oligosaccharides, Manal oligosaccharide - 3 (Manal -6) Mana1, lipoarabinomannans (LAMs), lipoarabinomannans nies nosylated (ManLAMs);
- d represents an integer of 0 to 5;
- R2 and R2 ' are different from H and R2 is different from H when R2' is absent;
- the present invention relates to a compound of formula I:
- a represents an integer from 1 to 9;
- b represents an integer of 1 to 3;
- c represents an integer from 1 to 130, preferably from 5 to 20;
- Ri, Ri 'and Ri are identical or different, each independently represent an H or the grouping:
- d represents an integer of 0 to 5;
- R 2 and R 2 ' represent the grouping:
- the present invention relates to a compound of formula I:
- a is equal to 5;
- Ri, Ri 'and Ri are identical or different, each independently represent an H or the grouping:
- R 2 and R 2 ' represent the grouping: with the proviso that at least one of R 1, R 1 'and R 1' is different from R 1, the present invention relates to a compound of formula I:
- a is equal to 5;
- Ri, Ri 'and Ri represent the group: in the equel d is equal to 2;
- R 2 represents the grouping:
- the present invention therefore relates to a trimannosyl compound of formula II:
- c represents an integer from 1 to 130, preferably from 5 to 20;
- d represents an integer from 1 to 5, preferably 2.
- the present invention relates to a trimannosyl compound of formula II:
- c represents an integer from 2 to 30, preferably from 3 to 20 and more preferably from 4 to 10;
- d represents an integer of 1 to 5, preferably 2.
- the present invention relates to a tri-mannosyl compound of formula II:
- the present invention relates to a synthetic compound comprising a lipid having structural characteristics peculiar to lipids naturally present in archaebacteria membranes.
- the lipids naturally present in archaebacteria membranes are characterized by the presence of ether bonds linking the aliphatic chains that constitute them to a glycerol molecule. They are also characterized by the presence of aliphatic phytanyl chains having regular branching.
- the lipid ethers present in the membranes of archaebacteria are thus generally diethers of phytanols (such as Parchaeol) or tetraethers of phytanols (such as caldarchaeol).
- the glycerolipids present in the membranes of bacteria and eukaryotic cells, so-called conventional, have them ester bonds connecting the fatty acids that constitute them to a molecule of glycerol.
- fatty acids of these conventional lipids are generally saturated or saturated aliphatic chains, not including branches.
- the structure of lipid ethers present in the archaebacteria membranes plays an important role in the resistance of archaebacteria to extreme conditions such as high temperatures or an acidic environment.
- the present invention relates to a synthetic compound having two ether bonds, connecting a branched aliphatic chain and a linear aliphatic chain unsubstituted to a glycerol.
- the present invention relates to a compound comprising a lipid diether.
- the lipid diether of the invention comprises two epiphatic chains, the linear structures of which do not include the branched carbons are of the same length, connected to a glycerol by an ether linkage, one of the epiphatic chains. being a branched chain and the other aliphatic chain being an unsubstituted linear chain.
- the lipiphatic chains of the lipid diether of the invention are saturated. In another embodiment, the lipiphatic chains of the lipid diether of the invention are unsaturated. In another embodiment, the branched aliphatic chain is saturated and the unsubstituted linear aliphatic chain is unsaturated. In another embodiment, the branched aliphatic chain is unsaturated and the unsubstituted linear aliphatic chain is saturated.
- the linear structure of the same length of the branched chain and the unsubstituted linear chain of the lipid diether of the invention comprises between 12 and 20 carbons, preferably between 16 and 20 carbons, and more preferably 16 carbons.
- the linear structure of the same length of the branched chain and the unsubstituted linear chain of the lipid diether of the invention comprises 12, 13, 14, 15, 16, 17, 18, 19 or 20 carbons.
- the present invention relates to a compound comprising a lipid diether to which is grafted a hydrophilic group, or polar group.
- the hydrophilic group grafted to the lipid diether of the invention is a glycoside.
- the hydrophilic group grafted to the lipid diether of the invention is a sugar recognized by lectins, proteins capable of binding sugar residues, and preferentially by type C lectins.
- the hydrophilic group grafted to the lipid diether of the invention is a sugar recognized by the lectins DC-SIGN (CD209), DEC205 / CD205, langerine (CD207), CLEC9A, CLEC4D, CD40, and / or the mannose receptor (MR).
- the hydrophilic group grafted to the lipid diether of the invention is a sugar selected from the list comprising mannose-terminated glycids, the giycanes terminated by a fucose, the trisaceharide 3'-suifo-Lewis a, trisaccharide Lewis b (Le b ), trisaceharide Lewis x (Le : ⁇ ), tri N-acetylglucosamine (tri-GlcNAc), PIMs (phosphatidylinositol mannosides), in particular PIM 1 to PI Me (phosphatidylinositoi mono- to hexa-mannoside), the Man9GlcNAe2 oligosaccharide, the mannose-rich N-linked oligosaccharides, the ⁇ -fucose-1 -4GlcN Ac oligosaccharide, the lacto-N-fucopentaose III
- the hydrophilic group grafted to the lipid diether of the invention is a sugar selected from the list comprising mannose-terminated glycans, the giycanes terminated by a fucose, the 3'-sulfo-Lewis trisaccharide, Lewis trisaccharide b (Le b ), Lewis x trisaccharide (Le x ), tri N-acetylglucosamine (tri-GlcNAc), PIMs (phosphatidylinosiol mannosides), in particular PI Mi to PIM ⁇ (phosphatidylinositol mono- to hexa) -mannoside), the oligosaccharide ⁇ -fucose-4GlcNAc, the lacto-N-fucopentaose oligosaccharide III containing the Le x trisaccharide, the GlcN ⁇ c2 Man 3 oligosaccharide, the
- the hydrophilic group grafted to the lipid diether of the invention is an aerated sugar comprising 2, 3, 4 or 5 sugar residues attached by an oligo (propylene glycol) n spacer wherein n is between 1 and And preferably n :::: 2, the sugar residues being independently selected from the list comprising mannose, glucose, fucose, and oligomannoses comprising from 2 to 10 imitates mannose.
- the hydrophilic group grafted to the lipid diether of the invention is an aerated sugar comprising 2, 3, 4 or 5 fucoses attached by an oligoCpropylene glycol spacer n in which n is between 1 and 5 and preferential. lementn ::: 2.
- the hydrophilic group grafted to the lipid diether of the invention is an antenna sugar comprising 2, 3, 4 or 5 oligomannoses comprising from 2 to 10 mannose units attached by an oligoipropylene spacer glyco l) n in which n
- the present invention relates to a compound comprising a lipid diether to which is grafted a hydrophilic group, or polar group, via a polyethylene glycol spacer (PEG).
- the PEG spacer has the following structure: in which c is between 1 and 130, preferably between 5 and 20.
- c is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 16, 17, 18, 19, 20 , 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45 , 46, 47, 48, 49, or 50.
- c is an integer ranging from 2 to 30, preferably from 3 to 20, and more preferably from 4 to 10. According to a particular embodiment, c is equal to 5.
- a lipid diether according to the invention may be obtained from a derivative of glycerol itself synthesized from a phytol and a (R) -solketal.
- the reaction of this glycerol derivative with hexadecyl triflate in the presence of a proton sponge makes it possible to obtain the corresponding diether.
- the hydrogen lysis of the benzyloxy group leads to the alcohol which can then be converted to carboxylic acid or amine.
- the diethers lipids thus obtained having a carboxylic acid function or an amine function can be used for the synthesis of compounds according to the invention.
- the synthesis of the tri-mannosylated compound of formula II is carried out in a four-step scheme from the tri-mannosyl acid carboxylic acid and 1-O-carboxyl-2-O-Phytanyl-3-0 hexadecane-s "glycerol subsequently designated lipid diether having a carboxylic acid function (or diether carboxylic acid):
- the tri-mannosyl carboxylic acid ligand is prepared by benzylation of pentaerythritol trialiyl ether, followed by a hydroboration-oxidation alylation / hydroboration-oxidation sequence, a trimannosylation of free hydroxyls by a tetra-O-benzoyl trichloroacetimidate mannosyl donor deprotection of the pentaerythritol hydroxyl followed by oxidation to the carboxylic acid;
- the present invention also relates to a liposome comprising at least one compound of the invention.
- the liposome of the invention comprises at least one compound of the invention in proportions of about 1% to about 15% by mol% relative to the total number of moles of lipids, preferably of about 2% to about 1.0%, more preferably about 5%.
- the liposome of the invention comprises at least one compound of the invention in amounts of about 1% to about 2%, 3%, 4%, 5%, 6%, 7%, 8%. %, 9%, 10%, 11%, 12%, 13%, 14%, or 15% mol% based on the total number of moles of lipids.
- the liposome of the invention comprises at least one compound of the invention in proportions of about 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%. , 9%, 10%, 11%, 12%, 13%, or 14%, at about 15% mol% based on the total number of moles of lipids.
- the liposome of the invention comprises about 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%. 13%, 14% or 15% of a compound of the invention in molar percentage relative to the total number of moles of lipids.
- the liposome of the invention comprises at least one compound of the invention in proportions of about 1% to about 15% by weight relative to the total weight of the liposome, preferably about 2%> at about 10%, more preferably about 5%.
- the liposome of the invention comprises about 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%. 13%, 14% or 15% of a compound of the invention, by weight relative to the total weight of the liposome.
- the liposome of the invention comprises at least one compound according to the invention alone or in admixture with one or more synthetic, semisynthetic or natural lipid (s).
- the liposome of the invention comprises at least one compound according to the invention and the lipid KLN25 (0,0-dioleyl- [3N- (N-methylimidazoliumbromide) propylene] phosphoramidate) of formula:
- the liposome of the invention comprises at least one compound according to the invention and the lipid MM27 ( ⁇ , ⁇ -dioleyl (-N- (histamine) phosphoramidate) of formula:
- the liposome of the invention comprises at least one compound according to the invention, the lipid KLN25 and the lipid MM27.
- the liposome of the invention comprises 5% of the compound according to the invention, 47.5% of lipid KLN25, and 47.5% of lipid MM27, in molar percentage relative to the total number of moles of lipids,
- the liposome of the invention comprises at least one compound according to the invention and a cationic lipid.
- the cationic lipid is a lipid having a polar head consisting of an imidazolium group.
- the liposome of the invention is a cationic liposome.
- the preparation of the liposome of the invention may be carried out by various methods well known to those skilled in the art.
- the liposome of the invention may be prepared according to the method of hydration of a dry lipid film (Pichon C, Midoux P. (2013) Mannosylated and Histidylated LPR Technology for Vaccination with Tumor Antigen mRNA Mol Mol. 969: 247-74).
- the liposome of the invention comprises at least one molecule of interest. According to one embodiment, the liposome of the invention comprises at least one molecule of interest to be delivered in vitro or in vivo to a cell.
- the molecule of interest is included within the lipid bilayer of the liposome of the invention. In another embodiment, the molecule of interest is included in the hydrophilic compartment of the liposome of the invention. In one embodiment, the molecule of interest is a nucleic acid, for example and non-exhaustively, the molecule of interest is a DNA, an RNA, an mRNA, a siAR, or a micro RNA. In another embodiment, the molecule of interest is a protein or a peptide. In another embodiment, the molecule of interest is a therapeutic agent. In another embodiment, the molecule of interest is a coloring agent or a marker.
- the molecule of interest is an immunogenic molecule. In one embodiment, the molecule of interest is capable of inducing an immune response.
- the molecule of interest is an antigen of bacterial origin, of fungal origin or of viral origin.
- the molecule of interest is an antigen of bacterial origin selected from the non-exhaustive list comprising the capsular polysaccharide (polyribosyl ribitol phosphate or PRP) of Haemophilus influenzae type b; polysaccharide serotypes 1, 2, 3, 4, 5, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F, 33F Streptococcus pneumoniae; Neisseria meningitidis polysaccharide group A; the polysaccharide of Neisseria meningitidis group B; the capsular polysaccharide Vi of Salmonella typhi (strain Ty 2),
- the molecule of interest is a cancer-associated antigen or a nucleic acid encoding a cancer-associated antigen.
- the immunogenic molecule included in the liposome of the invention is a tumor antigen or a nucleic acid encoding a tumor antigen.
- the tumor antigen may be chosen from the non-exhaustive list comprising: CD 4 (c clin-dependent kinase 4), pIs 4 ' 3 , p53, AFP, ⁇ -catenin, caspase 8, versions mutants of p21 Ras , Bcr-abl chimera, MUM-I MUM-2, MUM-3, ELF2M, HSP70-2M, HST-2, IAA0205, rabies, myosin / m, 707-AP, CDC27 / m, ETV 6 / AML, TEL / Amll, Dekcam, LDLR / FUT, Pml-RARaTEL / AMLI, Y-ESO-I, members of the MAGE (Melanoma-associated aniigen) family AGE-A
- the tumor antigen may be chosen from the non-exhaustive list comprising: CAP-1, CD 4 / m, the cell surface proteins of the Claudine CLAUDIN-6, CLAUDIN-18.2 and CLAUDIN-12 families, c-myc, CT, GnT-V, HAGE, HAST-2, LAGE, NF1, NY-BR-1, proteinase 3, SAGE, SCGB3A2, SCP1, SCP2, SCP3, SSX, SURVrVin, TPI / m, TPTE, CDK4 cyclin-dependent kinase 4), pIs 1 " 1 ' 4 ' 3 , p53, AFP, ⁇ -catenin, caspase 8, mutated versions of p21 Ras , Bcr-abl chimera, MUM-I MUM-2, MUM-3, ELF2M, HSP70-2M, HST-2, KIAA0205, RAGE, myosin / m, 707-AP,
- G antigen GAGE- 1, GAGE-2, GAGE-3, GAGE-4, GAGE-5, GAGE-6, GAGE-7B, GAGE-8, NA-88A, GAC-3, RCC G250-associated antigen, HPV-derived oncoproteins E6 and E7 (human papiloma virus), Epstein Barr virus EBNA2-6 antigens, LMP-I, LMP-2, gp77, gp100, MART-1 Me- A, tyrosinase, TRP-I and TRP-2 (tyrosinase-released protein), TRP-2-INT2, PSA, PS VI.
- G antigen GAGE- 1, GAGE-2, GAGE-3, GAGE-4, GAGE-5, GAGE-6, GAGE-7B, GAGE-8, NA-88A, GAC-3, RCC G250-associated antigen, HPV-derived oncoproteins E6 and E7 (human papiloma virus), Epstein Barr virus EBNA2-6 antigens, LMP-I
- MC1R ART4, CAMEL, CEA, CypB, HER2 / neu, hTERT, hTRT, iCE, Mucl, Muc2, PRAME RU1, RU2, SART-I, SART-2, SART-3, WT and WT1.
- the tumor antigen is selected from the list comprising oncoproteins E6 and E7 derived from HPV (human papiloma virus), MART-1 / Melan-A.
- the tumor antigen is the HPV-derived oncoprotein E7 (human papiloma virus).
- the molecule of interest is a polypeptide.
- the polypeptide is of bacterial origin, of fungal origin or of viral origin.
- the molecule of interest is a polypeptide of bacterial origin corresponding to a protein, or a fragment of this protein, chosen from the non-exhaustive list comprising Pseudomonas aeruginosa XcpQ and PopB; factor H binding protein (or 1 ⁇ for factor H binding protein), Neisseria heparin binding antigen (or Neisserial Heparin Binding Antigen) for Neisseria meningitidis group B; Neisseria adhesin A (or NadA for Neisseria adhesin A) of Neisseria meningitidis group B, diphtheria toxoid (or diphtheria toxoid) of Corynebacterium diphtheriae; tetanus toxoid (or tetanus toxo
- the molecule of interest is a polypeptide of viral origin corresponding to a protein, or a fragment of this protein, chosen from the non-exhaustive list comprising the GAG proteins (p24, p17, p9 and p7).
- Pol p64, p51, p10 and p32
- Env gp41 and gp!
- human immunodeficiency virus HAV
- pre-membrane or preM
- M protein for membrane
- EDIII domain of the E protein of the dengue virus
- fusion glycoprotein or RSV-F for respiratory syncytial virus F protein
- hemagglutinin of influenza A virus subtype H5N1 nuclear protein NP flu virus
- surface antigen of hepatitis B virus S and pre-S2 proteins of hepatitis B virus
- human papillomavirus L1 or HPV for human papilomavirus
- human papiloma virus LI or HPV for human papiloma virus
- human papilomavirus LI or HPV for human papiloma virus
- 16 protein
- human papilomavirus L1 or HPV for human papilomavirus
- the preparation of the lipoplex of the invention may be carried out by various methods well known to those skilled in the art.
- the lipoplex of the invention can be obtained by adding a nucleic acid solution to a liposome preparation according to the invention.
- the lipoplex of the invention is obtained by mixing a solution comprising a nucleic acid, preferably an mRNA, encoding a tumor antigen to a liposome preparation according to the invention.
- the lipoplex of the invention is obtained by mixing a solution comprising a nucleic acid, preferably an A Nm, coding a tumor antigen to a liposome preparation comprising 5% of compound according to the invention, 47, 5% of lipid KLN25, and 47.5% of lipid MM27, in molar percentage relative to the total number of moles of lipids.
- the liposome of the invention forms a lipopolyplex comprising at least one compound of the invention.
- the liposome of the invention comprises at least one nucleic acid complexed with a polycation.
- the preparation of the lipopolyplex of the invention may be carried out by various methods well known to those skilled in the art.
- the lipopolyplex of the invention can be obtained by mixing a complexed nucleic acid (cationic polymer) with a liposome preparation according to the invention.
- the lipopolyplex of the invention is obtained by mixing:
- nucleic acid preferably an mRNA, encoding a tumor antigen, the nucleic acid being complexed with the partially histidinylated polyiysin and comprising a PEG 5kDa molecule (PEG-Hp); and
- the lipopolyplex of the invention is obtained by mixing: a nucleic acid, preferably an mRNA, encoding a tumor antigen, the nucleic acid being complexed with the partially histidinylated poly lysine and comprising a molecule of PEG 5kDa (PEG-Hp); and
- a liposome preparation comprising 5% of compound according to the invention
- the liposomes, lipopolyslexes or lipopolyplexes of the invention are dispersed in an aqueous solution.
- the liposomes, liposomes or lipopolyplexes of the invention are dispersed in physiological saline or in PBS.
- the invention also relates to an aqueous solution or a dispersion comprising the liposomes, lipopolyslexes or lipopolyplexes of the invention.
- the present invention also relates to an emulsion comprising the liposomes, lipopolyslexes or lipopolyplexes of the invention.
- the emulsion comprising the liposomes, lipoplexes or lipopolyplexes of the invention is an oil-in-water emulsion, a water-in-oil emulsion or a water-in-oil-in-water emulsion.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising the liposomes, lipopolyslexes or lipopolyplexes of the invention and at least one pharmaceutically acceptable excipient.
- pharmaceutically acceptable excipients include, but are not limited to, water, salt water, dextrose, glycerol, and the like, or combinations of these excipients.
- the pharmaceutical composition may also include humidifiers, emulsifiers, buffers, adjuvants, and the like.
- the pharmaceutical composition further comprises at least one immune checkpoint inhibitor (also known as the "immune checkpoint inhibitor” or ICI).
- immune checkpoint inhibitors include, but are not limited to, CTLA-4 inhibitors (e.g., ipil mab), PD-1 inhibitors (e.g., pembrolizumab and nivolumab), and inhibitors.
- PD-L1 eg, azizolizumab, avelumab and durvalumab).
- the pharmaceutical composition of the invention may be administered to the subject by any suitable method of administration.
- the pharmaceutical composition of the invention can be formulated for oral administration, topical administration or injection.
- the pharmaceutical composition of the invention may also be formulated for systemic, intravenous, intraperitoneal, intramuscular, intraiiodal, intracoronary, intraarterial, subcutaneous, intradermal, transdermal, intratumoral, intraocular, pulmonary, inhalation administration. , by direct injection into a tissue, or by electroporation or sonoporation.
- the pharmaceutical composition of the invention is formulated to be administered by injection, preferably by intradermal or intravenous injection, more preferably by intradermal injection.
- the pharmaceutical composition according to the invention is formulated for oral administration.
- forms suitable for oral administration include, but are not limited to, tablets (including sustained release tablets), capsules, powders, granules, pills (including sugar-coated pills), capsules (including gelatin capsules flexible), oral suspensions, oral solutions, and other similar forms.
- the pharmaceutical composition of the present invention is formulated for injection.
- suitable forms for administration by injection include, but are not limited to, sterile aqueous solutions, dispersions, emulsions, suspensions, solid forms suitable for the preparation of solutions or suspensions by the addition of a liquid prior to such use. that, for example, powders.
- the pharmaceutical composition of the present invention is formulated for topical application.
- suitable forms for administration by injection include, but are not limited to, milks, creams, balms, oils, lotions, gels, ointments, sprays or drops, such as eye drops.
- the invention also relates to a vaccine adjuvant comprising the liposomes, lipoplexes or lipopoiypesxes of the invention and at least one pharmaceutically acceptable excipient.
- the invention also relates to a vaccine comprising the liposomes, lipoplexes or lipopoiypesxes of the invention, themselves comprising at least one immunogenic molecule, and at least one pharmaceutically acceptable excipient.
- the vaccine of the invention may further comprise at least one additional adjuvant.
- the vaccine further comprises at least one immune checkpoint inhibitor.
- the vaccine of the invention may be formulated in various forms, including for example a solution, a dispersion or an emulsion.
- the vaccine preferably comprises one or more surfactant (s).
- the vaccine of the invention can be lyophilized.
- the vaccine of the invention can thus be in a freeze-dried form.
- the vaccine comprises one or more agent (s) assisting with lyophilization. Freeze-drying agents are well known to those skilled in the art. These agents assisting in the lyophilization include in particular sugars such as lactose and mannitol.
- the vaccine of the invention may comprise one or more stabilizing agent (s), for example to prolong the shelf life of the vaccine or to improve the effectiveness of lyophilization.
- stabilizing agents include, but are not limited to, SPGA (Sucrose-Phosphate-Glutamate-Albumin), sugars such as sorbitol, mannitol, trehalose, starch, sucrose, dextran or glucose, proteins such as albumin or casein or their degradation products, mixtures of amino acids such as lysine or glycine, and buffers such as alkali metal phosphates.
- the vaccine of the invention is administered to the subject by one of the conventional methods of vaccination including injection, for example intradermal, intramuscular, intraperitoneal, or subcutaneous; topical administration, for example transdermal application or intranasal spray application; or oral administration.
- the vaccine of the invention may be administered in a single dose or in multiple doses.
- the formulation to be injected may be in the form of a sterile solution or dispersion, or a sterile lyophilized powder for the extemporaneous preparation of a sterile injectable solution or dispersion.
- one or more preserving agent (s) may be added to the vaccine such as antibacterial and antifungal agents such as parabens, chlorobutanol, phenol, sorbic acid, thiomersal and other similar agents. It may also be preferable to add to the vaccine one or more isotonic agent (s) such as sugars or sodium chloride to reduce the pain caused by the injection.
- one or more agent (s) delaying absorption can be added to the vaccine such as aluminum monostearate or gelatin.
- the total daily use of the liposome, lipoplex, lipopolyplex, pharmaceutical composition or vaccine of the invention will be adjusted by the attending physician in the context of his medical opinion.
- the therapeutically effective dose specific to each patient will depend on a variety of factors including the disorder being treated and its severity; the activity of the compound used; the specific composition used; age, weight, general health, sex and diet of the patient, duration and mode of administration; the duration of the treatment; the drugs used in combination or coincident with the compound used, and other similar factors known in the medical field.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention is administered once, twice, 3 times, 4 times, 5 times, 6 times, 7 times, 8 times, 9 times. times, or 10 times about.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention is administered to the subject at least once a day.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention is administered once a day.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention is administered to the subject at least once a week.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention may be administered once a week, twice, three times, four times or up to seven times a week.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention is administered to the subject before the symptoms occur, ie liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the subject.
- the invention is administered prophylactically.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention is administered to the subject after the symptoms have occurred, ie, the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the subject.
- the invention is therapeutically administered.
- the liposome, lipoplex, lipopolyplexia, pharmaceutical composition or vaccine of the invention is administered according to an optimal administration protocol.
- an optimal administration protocol comprises appropriate dose parameters and modes of administration which lead to the stimulation or triggering of an immune reaction in the subject.
- the effective dose parameters can be determined by conventional methods for a particular disease. Examples of such methods include, but are not limited to, survival rates, side effects, progression or regression of the disease.
- the efficacy of the dose of liposomes, lipoplexes, lipopolyplexes, pharmaceutical composition or vaccine according to the invention for treating cancer can be determined by the evaluation of the response rate, which corresponds to the proportion of patients whose tumor regress or does not progress on treatment.
- the present invention also relates to a liposome, lipoplex or lipopolyplexe according to the invention for its use for vectorization, that is to say the transmembrane transfer of a molecule of interest.
- the present invention therefore also relates to the use of the liposome, lipoplex or lipopolyplexe according to the invention for the vectorization, that is to say the membrane transfer of a molecule of interest.
- the present invention relates to a liposome, lipoplex or lipopolyplex according to the invention for its use for the transfection of cells, preferably for the in vivo transfection of cells.
- the present invention relates to the use of a liposome, lipoplex or lipopolyplex according to the invention for the in vitro or ex vivo transfection of cells.
- the present invention thus relates to a method of transfection in vitro or ex vivo of cells, comprising the use of a lipoplex or lipopolyplexe according to the invention.
- the present invention relates to a liposome, lipoplex or lipopolyplexe according to the invention for its use for the delivery of prodrugs, sensitizers or visualization agent.
- the present invention relates to a liposome, lipoplex or lipopolyplexe according to the invention for its use for gene therapy, topical treatments (dermatology, ophthalmology) or bactericidal activities.
- the invention further relates to a cosmetic composition comprising a liposome, lipoplex or lipopolyplexe according to the invention.
- Another subject of the invention is also the cosmetic use of a liposome, lipoplex or lipopolyplexe according to the invention.
- the invention also relates to a liposome, lipoplex or lipopolyplex according to the invention for its use for targeted targeting.
- the present invention therefore also relates to the use of the liposome, lipoplex or lipopolyplexe according to the invention for targeted targeting.
- the compound of the invention included in the liposome, lipoplex or lipopolyplex of the invention is recognized and fixed by a particular type of cell.
- the compound of the invention included in the liposome, lipoplex or lipopolyplex of the invention is recognized and fixed by the cells expressing on their surface a lectin.
- the compound of the invention included in the liposome, lipoplex or lipopolyplex of the invention is recognized and fixed by cells expressing on their surface a type C lectin.
- the compound of the invention included in the liposome, lipoplex or lipopolyplex of the invention is recognized and fixed by the cells expressing on their surface the lectins DC-SIGN ((1) 209). DEC205 / CD205, langerine (CD207), CLEC9A, CLEC4D, CD40, and / or the mannose receptor (MR).
- the compound of the invention included in the liposome, lipoplex or lipopolyplex of the invention is recognized and fixed by the antigen presenting cells.
- the compound of the invention included in the liposome, lipoplex or lipopolyplexe of the invention is recognized and fixed by macrophages, dendritic cells and / or Langerhans cells.
- the compound of the invention included in the liposome, lipoplex or lipopolyplex of the invention is recognized and fixed by the dendritic cells.
- the present invention relates to a liposome, lipoplex or lipopolyplexe according to the invention for its use for transfection of antigen presenting cells, preferably for macrophage transfection, of cells dendritic and / or Langerhans cells, even more prefer! for the transfection of dendritic cells.
- the invention also relates to a compound of the invention, a liposome, lipoplex or lipopolyplexe according to the invention for its use as an adjuvant.
- the compound of the invention, the liposome, lipoplex or lipopolyplex of the invention has an adjuvant effect in vitro.
- the compound of the invention, the liposome, lipoplex or lipopolyplex of the invention has an adjuvant effect in vivo.
- the invention also relates to a compound of the invention, a liposome, lipoplex or lipopolyplexe according to the invention for use as a vaccine adjuvant.
- the liposome, lipoplex or lipopolyplex of the invention administered to a subject induces an immune response in the subject.
- the liposome, lipoplex or lipopolyplex of the invention administered to a subject induces an immune response in the subject that does not depend on the presence in the liposome, lipoplex, or lipopolyplex of the invention of a drug molecule. immunogenic interest.
- the invention also relates to a liposome, lipoplex or lipopolyplexe according to the invention for its use for vaccination.
- the invention also relates to a liposome, lipoplex or lipopolyplexe according to the invention comprising at least one molecule of interest capable of inducing an immune reaction for its use for vaccination.
- the invention also relates to a liposome, lipoplex or lipopolyplexe according to the invention comprising at least one molecule of interest capable of inducing an immune reaction for its use as a vaccine.
- the liposome, lipoplex or lipopolyplex of the invention is used for preventive vaccination. In another embodiment, the liposome, lipoplex or lipopolyplex of the invention is used for therapeutic vaccination.
- the liposome, lipoplex or lipopolyplex of the invention is used as an anti-cancer vaccine.
- the liposome, The lipopolyplexic lipopolyplex of the invention is used for therapeutic vaccination in the treatment of cancer.
- cancer or tumor includes all proliferative diseases.
- proliferative diseases include neoplasms, dysplasias, premalignant or premalignant lesions, abnormal cell growths, malignant tumors, and cancers or metastases.
- the cancer is selected from the group consisting of leukemia, non-small cell lung cancer, small cell lung cancer, central nervous system (CNS) cancer, melanoma, ovarian cancer, kidney cancer, prostate cancer, breast cancer, glomeria, colon cancer, bladder cancer, sarcoma, pancreatic cancer, colorectal cancer, cancer head or neck, liver cancer, bone cancer, cancer of the spinal cord, stomach cancer, bowel cancer, esophageal cancer, thyroid cancer , hematological cancer, and lymphoma.
- CNS central nervous system
- the cancer is breast cancer, melanoma or hepatocellular carcinoma.
- breast cancer is a triple-negative breast cancer, i.e. breast cancer characterized by the absence of estrogen receptor expression, progesterone receptors, and HER2 (human epidermal growth factor receptor 2) by cancer cells.
- the liposome, lipoplex or lipopolyplex of the invention used as an anti-cancer vaccine comprises at least one tumor antigen or at least one nucleic acid encoding a tumor antigen. In one embodiment, the liposome, lipoplex or lipopolyplex of the invention used for an anti-cancer therapeutic vaccination comprises at least one tumor antigen or at least one nucleic acid encoding a tumor antigen.
- the liposome, lipoplex or lipopolyplex of the invention used for therapeutic anti-cancer vaccination comprises at least one tumor antigen or at least one nucleic acid encoding a tumor antigen selected from the non-exhaustive list comprising: CDK4 ( cy clin- depend kinase 4), plS 1 " 1 4'3 , AFP, ⁇ - catenin, caspase 8, p53, mutated versions of p21 Ras , Bcr-abl chimera, MUM-I MUM-2, MUM-3, ELF2M, HSP70-2M, HST-2, KIAA0205, RAGE, myosin / m, 707-AP , CDC27 / m, ETV6 / AML, TEL / Amll, Dekcain, LDLR / FUT, Pml-RARaTEL / AML, NY-ESO-I, members of the MAGE (Melanoma-associated antigen) family
- the liposome, lipoplex or lipopolyplexis of the invention used for an anti-cancer therapeutic vaccination comprises at least one tumor antigen or at least one nucleic acid encoding a tumor antigen selected from the non-exhaustive list comprising: CAP-1 , CD 4 / m, cell surface proteins of the Claudine CLAUD1N-6 family, CLAUDIN-18.2 and CLAUDIN-12, c-myc, CT, Gn'TV, HAGE, HAST-2, LAGE, NF 1, NY- BR-1, proteinase 3, SAGE, SCGB3A2, SCP1, SCP2, SCP3, SSX, SURVrVin, TPI / m, TPTE, CDK4 (cyclin-dependent kiriase 4), pIs 1 " 1 ' 4 ' 3 , AFP, ⁇ -catenin , caspase 8, p53, mutated versions of p21 Ras , Bcr-abl chimera, MUM-I
- the liposome, lipoplex or lipopolyplex of the invention used for an anti-cancer therapeutic vaccination comprises at least one tumor antigen or at least one nucleic acid encoding a tumor antigen selected from the list comprising oncoproteins E6 and E7. derived from HFV (human papilloma virus), ART-1 / elan-A.
- the liposome, lipoplex or lipopolyplexe of the invention used for an anti-cancer therapeutic vaccination comprises at least the oncoprotein E7 derived from HPV (human papilloma virus) or at least one nucleic acid encoding the oncoprotein. E7 or a peptide of oncoprotein E7.
- the subject is susceptible or suspected of suffering from a disease, preferably an infectious disease or a cancer.
- cancer development risks include, but are not limited to family or genetic susceptibility, age, alcohol consumption, smoking, exposure to toxic and / or carcinogenic substances, exposure to radiation, sun exposure, chronic inflammation, diet, and others.
- risks of developing infectious diseases include, but are not limited to, exposure to bacteria, viruses, fungi, parasites, and others.
- infectious diseases includes all diseases caused by an infectious agent, such as a bacterium, a virus, a fungus or the like and diseases caused by a parasite.
- the infectious disease is selected from influenza, tuberculosis, bacterial pneumonia, viral pneumonias, Lyme disease, human immunodeficiency virus (HIV) infections, and acquired immunodeficiency syndrome (AIDS).
- diseases caused by a virus include, but are not limited to, human immunodeficiency virus (HIV) infections, acquired immunodeficiency syndrome (AIDS), adenovirus infections, alpha virus infections, arbovirus infections, pneumonia of viral origin, Bell's palsy, Borna's disease, Bunyaviridae virus infections, infections with a virus of the family Caliciviridae, chickenpox, colds, eondyloma acuminata, infections with a coronavirus, infections with the Cocksackie virus, infections with a cytomegalovirus, Chikungunya, dengue fever, infections with a DNA viruses, RNA virus infections, contagious ecthyma, encephalitis, arbovirus encephalitis, her
- the infectious disease is a disease caused by a virus and selected from Acquired Immunodeficiency Syndrome (AIDS) or Human Immunodeficiency Virus (HIV) infection, viral hepatitis, or virus infections.
- AIDS Acquired Immunodeficiency Syndrome
- HIV Human Immunodeficiency Virus
- viral hepatitis or virus infections.
- hepatitis A (V HA) hepatitis B virus
- HCV hepatitis C virus
- HDV hepatitis D virus
- HPV human papillomavirus
- diseases caused by a bacterium or a fungus include, but are not limited to, abscesses, actinomyeosis, anaplasmosis, anthrax, reactive arthritis, aspergillosis, baereremia, bacterial and mycotic infections, Bartonella infections, botulism, brain abscesses, brucellosis (or Malta fever), bacterial infections of the Burkholderia family, infections with a bacterium of the genus Campylobacter, candida dose such as candidiasis caused by Candida albicans, vulvovaginal candidiasis, cat scratch disease (or benign lymphocyticulosis of inoculation, or benign lymphogranuloma), cellulitis, central nervous system infections, chancre, chlamydial infections, cholera , Clostridium infections, coccidioidomycoses such as coccidioidomycosis caused by Coccidioid.es immitis
- diseases caused by a parasite include, but are not limited to, malaria, sleeping sickness, leishmaniasis, toxoplasmosis, and others.
- the subject suffers from a disease, preferably an infectious disease or a cancer.
- the subject is an animal, preferably a mammal, more preferably a human. In one embodiment, the subject is a man. In another embodiment, the subject is a woman. In one embodiment, the subject is a child.
- An object of the present invention is also a method for vectorizing, i.e., transferring a molecule of interest across a membrane, comprising the use of a liposome, lipoplex or lipopol.ypl.exe according to the invention.
- the present invention also relates to a method for inducing an immune response in a subject comprising administering the liposome, lipoplex or lipopolyplexe according to the invention.
- the present invention also relates to a method for vaccinating a subject comprising the administration of the liposome, lipoplex or lipopolyplex according to the invention, preferably a liposome, lipoplex or lipopolyplex comprising at least one molecule of interest capable of inducing an immune reaction. .
- the vaccination is preventive. According to another embodiment, the vaccination is therapeutic.
- the method for vaccinating a subject according to the invention is a method of vaccination against cancer, preferably a method of therapeutic vaccination against cancer.
- Another subject of the present invention relates to a method for preventing cancer in a subject comprising the administration of the liposome, lipoplex or lipopolyplex according to the invention, preferably a liposome, lipoplex or lipopolyplex comprising at least one tumor antigen or an acid nucleic acid encoding a tumor antigen.
- the present invention also relates to a method for treating cancer in a subject comprising administering the liposome, lipoplex, or lipopolyplexus according to the invention, preferably a liposome, lipoplex or Hpopolyplexe comprising at least one tumor antigen or a nucleic acid encoding a tumor antigen.
- FIG. 1 is a set of graphs showing the binding of LPR-MN or LPR-triMN LPR lipopolyplexes to cells expressing lectin type receptors: (A) 293T cells expressing or not expressing the DC-SIGN receptor ; (B) monocyte-derived human dendritic cells (MoDCs); (C) human blood mononuclear cells (PBMCs); (D) human dendritic cells isolated from blood (panDCs).
- A 293T cells expressing or not expressing the DC-SIGN receptor
- MoDCs monocyte-derived human dendritic cells
- PBMCs human blood mononuclear cells
- panDCs human dendritic cells isolated from blood
- Figure 2 is a set of graphs showing the binding of LPR-MN, LPR-MN diether or LPR-triMN lipopolyplexes to cells expressing lectin type receptors: (A) DC 2.4 murine dendritic cells; (B) murine splenocytes; (C) monocyte-derived human dendritic cells (MoDCs).
- A DC 2.4 murine dendritic cells
- B murine splenocytes
- MoDCs monocyte-derived human dendritic cells
- Figure 3.4 is a set of graphs showing the expression of the CD80 activation marker by FITC- or FITC + MoDCs dendritic cells after incubation in the presence of increasing concentrations of LPR-MN or LPR-triMN lipopolyplexes.
- the FITC-cells did not capture the lipopolyplexes, the FITC + cells captured the lipopolyplexes.
- Figure 3B is a histogram showing the expression of HLA-DR and CD83 activation markers by MoDCs cells having been incubated in the presence of 2.5 (ug / ml LPR-MN or LPR-triMN.
- Figure 4A is a graph showing expression of GFP by MoDCs dendritic cells incubated at t0 with LPR-MN lipopolyplexes containing GFP mRNA and at t6h with LPS (positive control) or lipopolyplexes LPR-MN or LPR-tri N containing the single-stranded PolyU control RNA (ssPolyU).
- Figure 4B is a graph showing the expression of the CD80 activation marker by MoDCs dendritic cells incubated at t0 with LPR-MNs containing the mRNA. GFP then at t6h with LPS (positive control) or LPR-MN or LPR-triMN containing the single-stranded PolyU control RNA (ssPoiyU).
- Figure 4C is a histogram showing the expression of CD80, CD83 and HLA-DR activation markers by MoDCs dendritic cells first incubated with LPR-MNs containing GFP mRNA for 6ii then in a second time with LPS (positive control) o LPR-MN or LPR-triMN containing single-stranded PolyU control RNA (ssPoiyU) for 12h hours.
- LPS positive control
- ssPoiyU single-stranded PolyU control RNA
- FIG. 5A is a set of photographs showing the two injection sites (indicated by arrows) at the back of the mouse that has been given 24h (1) and 48h (2) previously an injection of PBS, lipopolyplexes LPR-MN or LPR-triMN lipopolyplexes.
- Figure 5B is a set of photographs showing the microscopic analysis after hematoxylin-eosm labeling of a 10 ⁇ m section of skin at the injection site (point 48h) and the inguinal ganglion draining the mouse injection sites. having received 24b (1) and 48h (2) before injection of PBS, LPR-MN or LPR-triMN.
- Figure 6 is a set of photographs showing fluorescent microscopy analysis of popliteal lymph nodes taken from mice that had been injected 6 hours before with rhodamine-labeled PBS, LPR-MN or LPR-triMN.
- the marker CD 169 anti-CD 169-APC
- LPRs are visualized by means of rhodamine labeling.
- the rhodamine signal colocalized with the signal CD 169 is indicated by asterisks (*).
- the rhodamine signal located at extended branched cells not expressing CD 169 is indicated by arrows.
- Figure 7 is a set of graphs showing: (A) the absolute value (number) and (B) the relative percentage of dendritic cells; and within these total dendritic cells, (C) the percentage of activated dendritic cells (cells .y6C ⁇ ) and (D) of inflammatory dendritic cells (LY6G + cells) present in the ganglia Draining the injection site taken from mice that received 24h before injection of PBS, LPR naked, LPR naked diether, LPR-MN, or LPR-triMN.
- Figure 8 is a set of histograms showing the percentage of CD4 + (A) and CD8 + (B) cells expressing interferon- ⁇ after sensitization by dendritic cells incorporating the indicated lipopolyplexes containing oncoprotein mRNA.
- E7 LPR naked, LPR-MN or LPR-triMN
- stimulation by dendritic cells previously loaded with E7 peptides.
- the mRNA is replaced by a single-stranded PolyU RNA (ssPolyU).
- Fig. 9 is a set of graphs showing: (A) secretion of interieron- ⁇ by lymphocytes isolated from the spleen of mice vaccinated with LPR-triM-E7 / E7-DC-LAMP administered by different routes (IV: intravenous, SC: subcutaneous, ID: intradermal); (B) the secretion of interferon- ⁇ by lymphocytes isolated from the spleen of vaccinated mice at day 0 and day 2 with an injection of PBS, or of different LPRs (LPR-N, LPR-N-diether, LPR-MN, LPR-LPR).
- FIG. 10A is a set of graphs showing the tumor volume developed by mice injected with 50000 cells of the TC-1 syngeneic tumor line and then vaccinated. with PBS, LPR-MN-ssPolyU, LPR-MN-E7 / E7-DC-LAMP, LPR-triMN-ssPolyU or LPR-triMN-E7 / E7-DC-LAMP. Each curve corresponds to the volume of the tumor developed by a mouse. The arrows indicate the days on which the mice were vaccinated (J7 and J9).
- Figure 10B is a graph showing the survival rate of these mice.
- Figure 11 is a set of graphs showing the tumor volume developed by mice injected with B16F0 tumor cells expressing MARTI (A) or EG7 tumor cells expressing OV (B) and which were subsequently vaccinated with PBS. , LPR-triMN-ssPolyU or LPR-triMN containing MARTI or OVA mRNA, respectively.
- NS no statistically significant difference (ie p> 0.05), * p ⁇ 0.05, ** p ⁇ 0.01.
- BRUKER ARX 400 and BRUiCER Fourier transform spectrometers Avance 400 400.13 MHz for the proton, 100.61 MHz for the carbon, ENSCR).
- the chemical shifts are expressed in parts per million (ppm) relative to the chemical shift of the deuterated solvent used as a reference.
- the multiplicity of signals is explained using the following abbreviations: s, singlet; d, doublet; t, triplet; q, quadruplet; m, multiplet or mass not analyzable.
- the coupling constants (J) are expressed in Hertz (Hz).
- the 13C spectrometric data were determined from fully decoupled spectra and key heteron correlated 2D spectra. Mass spectrometry
- MS / S ZabSpec TOF Micromass High Resolution Mass Spectrometer (Western Regional Physics Measurement Center, University of Rennes 1).
- the ionization mode used is the positive Electrospray (SM-ESI +).
- the ion acceleration voltage is 4kV and the source temperature is 60 ° C (melt-in mode).
- the compounds are dissolved beforehand in methanol or dimethylsulfoxide.
- DIA ⁇ , ⁇ '-diisopropylethylamine
- Eb boiling temperature
- EP petroleum ether
- TBTU O- (benzotriazol-1-yl) -1,1,3,3-tetramethyluronium tetrafluoroborate;
- Step 1 Benzylation of pentaerythritol triallyl ether
- the solvents are evaporated under vacuum on a rotary evaporator and then on a vane pump.
- the yellowish residue is taken up in diehloromethane and then washed with water and with a saturated aqueous solution of NaQ.
- the organic phase is dried over MgSO4 and concentrated in vacuo.
- the crude product is purified by silica gel column chromatography (eluent: EP / AcOEt): 9/1, v / v) to provide the benzylated derivative (10.45 g) as a colorless oil in quantitative yield .
- the triailyl compound (10 g, 28.8 mmol) is dissolved in 50 mL of anhydrous dioxane.
- 9-BBN 0.5 M in THF
- 519 mL, 0.259 mol is added to the reaction medium previously cooled to 0 ° C and the mixture is stirred for 24 hours at room temperature.
- 3M sodium hydroxide (577 mL, 75 eq.)
- 10 M hydrogen peroxide 115 mL, 1.15 mol are added at 0 ° C. to the reaction medium and the mixture is stirred for 12 hours at room temperature.
- the triol (7.8 g, 19.4 mmol) is dissolved in 100 mL of anhydrous DMF and is added dropwise to the reaction medium! containing potassium hydride (3.9 g, 97 mmol) in DMF previously cooled to 0 ° C. The mixture is stirred for 10 minutes at 0 ° C. before introducing allyl bromide (8.35 mL, 97 mmol) dropwise. Stirring is continued for 24 hours at room temperature and the excess of potassium hydride is hydrolysed with 100 ml of distilled water.
- reaction medium is extracted 3 times with diethyl ether and then the organic phase is washed with saturated aqueous NaCl solution, dried over MgSO 4, filtered, concentrated under reduced pressure and purified by chromatography on silica gel (killing EP / AcOEt: 85 15) to give 8.63 g of the triallyl product as a colorless oil with a yield of 78%.
- Step 6 Debugging ⁇ oxidation
- Step 7 Introduction of PEG chain on the acid lipid diether earboxyUque
- Step 8 Reduce the azide function
- Step 9 Coupling between the tri-mannosyl carboxylic acid ligand and the amino lipid
- Step 10 Synthesis of the tri-mannosyl lipid by hydroxylation of the mannose units
- a solution of the tri-mannosylated lipid in benzoyl form (435 mg, 0.139 mmol) in a CTfcCh / MeOH mixture (100 mL, 1/1) is added a solution of MeONa in methanol (5.3M, 48.8 ⁇ L, 0.258 mmol) freshly prepared.
- the reaction medium 1 is stirred overnight at room temperature.
- the mixture is neutralized by the addition of Amberlite resin 1R-120 H + and the resin is filtered on cotton. After evaporation of the solvents under reduced pressure, a viscous pale-gray yellowish product is isolated (255 mg, 97%) corresponding to the target tri-mannosylated lipid.
- lipid KLN25 (0,0-dioleyl-N- [3N- (N-methylimidazoliumbromide) propylene] phosphoramidate) of formula:
- Liposomes are prepared according to the method of hydration of a dry lipid film and dialyzed against a 10 mM HEPES buffer, pH 7.4 (Piehon C, idoux P. (2013) Mannosylated and Histidylated LPR Technology for Vaccination wiih Tumor Antigen mRNA, Methods Mol Biol 969: 247-74).
- compositions of the liposomes used are;
- liposomes consisting of a mixture of lipids KLN25 and MM27 to
- liposomes diether or liposomes naked diether liposomes consisting of a mixture of lipids KLN25, M 27 and 1-O-carboxyl-2- ⁇ -Phytanyl-3-O-hexadecane-5 '"- glycerol (lipid diether) with 47.5% - 47.5% - 5% o respectively;
- MN mono-mannosyl liposomes
- mono-mannosyl liposomes diether liposomes consisting of a mixture of lipids KLN25, MM27, mono-mannosylated lipid and 1-O-carboxyl-2-O-
- tri-mannosylated liposomes liposomes consisting of a mixture of lipids KLN25, MM27 and tri-mannosylated lipids of the invention (the synthesis of which is described in Example 1) at 47.5% - 47.5% - 5% respectively.
- Fluorescent liposome compositions used are:
- liposomes nu-Flu: liposomes consisting of a mixture of lipids KLN25, MM27 and Lip-Flu at 49.75%> - 49.75% - 0.5% respectively;
- liposomes nu-Rlio liposomes consisting of a mixture of lipids LN25, MM27 and Lip-Rho 49.75% - 49.75% - 0.5% respectively;
- liposomes diether-Flu liposomes consisting of a mixture of lipids KLN25, MM27, 10-carboxy-2-O-Phytanyl-3-O-hexadecan-5'-glycerol and Lip-Flu 47.25% - 47, 25% - 5% - 0.5% respectively;
- Rho-diether liposomes liposomes consisting of a mixture of lipids KLN25, M27, 10-carboxyl-2-O-Phytanyl-3-O-hexadecane-n-glycerol and Lip-Rho 47.25% - 47, 25% - 5% - 0.5% respectively;
- mono-mannosyl liposomes Flu: liposomes consisting of a mixture of lipids LN25, MM27, mono-mannose lipid ( ⁇ -D-mannopyranosyl-N-dodecylhexadecanamide) and Lip-Flu 47.25% - 47.25% - 5% - 0.5% respectively;
- Rho liposomes consisting of a mixture of lipids KLN25, MM27, mono-mannose lipid and Lip-Rho 47.25% - 47.25% - 5% - 0.5% respectively;
- liposomes consisting of a mixture of lipids KLN25, MM27, mono-mannosylated lipid, 10-carboxyl-2-O-Phytanyl-3-O-hexadecane-, n-glycerol and Lip-Flu with 44.75% - 44.75% - 5% - 5% - 0.5% respectively;
- mono-mannosyl liposomes diether Rho liposomes consisting of a mixture of lipids KLN25, MM27, mono-mannosylated lipid, 1-O-carboxyl-2-O-Phytanyl-3-O-hexadecane-SM-glycerol and Lip-Rho at 44.75% - 44.75% - 5% - 5% - 0.5% respectively; tri-mannosyl liposomes Flu: liposomes consisting of a mixture of lipids KLN25, MM27, tri-mannosyl lipids of the invention (the synthesis of which is described in Example 1) and Lip-Fiu 47.25% -47, 25% - 5% - 0.5% respectively; tri-mannosyl liposomes Rho: liposomes consisting of a mixture of lipids KLN25, MM27, tri-Mannosylated lipids of the invention and Lip-Rho 47.25% -
- the mRNA was complexed with the partially histidinylated polylysine and comprising a PEG 5kDa molecule (PEG-HpK) the synthesis of which is described in (Pichon C, Midoux P. (2013) Mannosylated and Histidylated LPR Technology for Vaccination with Tumor Antigen mRNA Methods Mol Biol 969: 247-74).
- PEG-HpK PEG 5kDa molecule
- LPRs are prepared according to the method described in (Pichon C, Midoux P. (2013) Mannosylated and Histidylated LPR Technology for Vaccination with Tumor Antigen mRNA, Methods Mol Biol 969: 247-74).
- LPRs are obtained as follows. Briefly, 15 ⁇ l of PEG-HpK (in 10 ⁇ l of 10 mM HEPES pH 7.4 buffer) are first added to mNAP (5 ⁇ g in 25 ⁇ l of 10 mM HEPES pH 7.4 buffer). The mixture is vortexed for 4 sec and then allowed to stand for 30 min at 20 ° C. The LPRs are then formed by adding 10 ⁇ g of liposomes (5 ⁇ l to 5.4 mM in 10 mM HEPES buffer, pH 7.4) by shaking the solution by round-robbing. The solution is allowed to stand for 15 minutes at 20 ° C before use. For in vitro transfection, the volume of solution is adjusted to 1 ml with serum-free medium.
- the LPRs are obtained by previously adding 50 ⁇ (50 ⁇ g) of mRNA in a 1.5 ml Eppendorf tube containing 160 ⁇ l of 10 mM pH 7.4 HEPES buffer prepared in sterile water without endonuclease. 100 ⁇ (150 ⁇ l) of the PEG-HpK solution are then added and mixed for 4 seconds. After 30 min at 20 ° C., 50 ⁇ l of liposomes (100 g in 10 mM HEPES buffer, pH 7.4, sterile, prepared in water without endonuclease) are added to the polymer / mRNA complex and gently mixed by pipetting. The solution is allowed to stand for 15 minutes at 20 ° C. For in vivo injection, the solution is adjusted to a final 5% sucrose concentration by adding 40 ⁇ l of a 50% sucrose solution prepared in water without endonuclease. The mice are injected with 100 ⁇ l of solution.
- the lipopolyplexes used in the described experiments contain the single-stranded PolyU control RNA (ssPoiyU).
- LPR-NPR, LPR-MN diether or LPR-diMether, LPR-MN, LPR-MN diether, LPR-triMN are obtained by mixing the corresponding liposomes (naked liposomes, liposomes diether or naked liposomes diether, liposomes MN, liposomes MN diether, triMN liposomes) with a cationic polymer (RNA complexed with the partially histidinylated polylysine and comprising a PEG 5kDa molecule),
- the 293T cell line is a cell line derived from transformed renal human embryonic cells.
- the 293T DC-SIGN cell line corresponds to 293T cells genetically modified to express DC-SIGN, a type C iectin.
- MoDCs cells are monocyte-derived human dendritic cells.
- PBMCs are mononuclear blood cells.
- PanDCs cells are human dendritic cells identified within other peripheral blood cells (PBMCs). ELI Spot interferon -y
- the secretion of interferon- ⁇ by T lymphocytes from the spleen is analyzed using the IFN- ⁇ ELISpot PLUS kit (Mabtech, Sweden). Briefly, the splenocytes to be analyzed are incubated in an ELISpot plate in the presence of the E749-57 antigen or concanavalin A (positive control) or culture medium (negative control). Interferon- ⁇ secreted is captured by antibodies attached to the plate. After an incubation of 36b at 37 ° C, the plate is washed and the cells are removed. The plate is then incubated with a biotinylated antibody directed against interferon-y and then with streptavidin coupled to alkaline phosphatase. The presence of spots corresponding to a secretion of interferon- ⁇ is revealed after incubation with the BCIP / NBT reaction buffer. The spots are analyzed by an ELISpot plate reader.
- RNAs were extracted from skin samples using the ReliPrep RNA Tissue Miniprep System kit (Z6112, Promega), following the supplier's instructions. The RNAs were then retranscribed to cDNA using the Go Script Reverse Transcription System kit (A5000, Promega), according to the supplier's instructions. SYBR green (qRT-PCR) real-time quantitative PCR reactions were performed on the iGenSeq platform (Pitié-Salpêtrière Hospital, Paris, France) with the primers described in Table 1. The results were analyzed with Software 1536 Ligbtcycler (Roche, Basel, Switzerland) and gene expression was quantified by the relative method of ACTs, normalized by the expression of the ⁇ -actin and GAPH reference genes.
- LPR-triMN targets cells expressing lectin receptors
- LPR. naked popol.yplex.es
- LPR-MN Mono-mannosylated lipopolyplexes
- LPR-triMN tri-mannosylated lipopolyplexes
- Lipopolyplexes all include a fluorescent lipid coupled with fluorescein.
- the cell lines tested express on their surface type C lectins capable of binding sugar residues mannose, galactose or fiicose. The attachment of lipopolyplexes to these receptors is analyzed by flow cytometry.
- the tri-mannosylated lipopolyplexes target DCSign 293T cells (FIG. 1A), MoDC cells (FIG.
- PBMC cells FIG. 1B
- panDC cells from PBMCs FIG. 1D
- mono-mannose lipopolyplexes LPR-MN
- the naked lipopolyplexes do not include lipids having a mannose group and do not target any of these cells regardless of the concentration of lipopolyplexes tested (FIG. 1).
- LPR-MN mono-marmosylated lipopolyplexes
- LPR-MN diether mono-mannosylated lipopolyplexes diether
- LPR-triMN tri-mannosylated lipopolyplexes
- tri-mannosylated lipids of the invention therefore gives LPR-triMN lipopolyplexes the ability to bind to cells expressing lectin type receptors. This property is specific to the tri-mannosylated lipopolyplexes of the invention, and lipopolyplexes comprising mono-marmosylated lipids (LPR-MN) or lipids mono-mannosylated and diether lipids (LPR-MN diether) possess reduced fixing capacity.
- LPR-MN mono-marmosylated lipids
- LPR-MN diether lipids mono-mannosylated and diether lipids
- the MoDCs dendritic cells are cultured in the presence of LPS or increasing doses of LPR-MN or LPR-triMN comprising lipids labeled with fiuoresonin for 6 hours. Cytometric analysis makes it possible to identify the fluorescent MoDC cells that have captured the LPRs. Furthermore the expression of activation markers H LA-DR, CD80 and CD 83 is also measured.
- Fluorescent MoDCs cells having captured the LPR-MNs do not express activation markers significantly compared to the LPS activation control (FIGS. 3A and 3B). Fluorescent MoDCs cells having captured the LPR-triMNs express the HLA-DR, CD80 and CD83 activation markers in a dose-dependent manner (FIG. 3A) and significantly with respect to the LPS activation control (FIG. 3B).
- the presence of tri-mannosylated lipids of the invention therefore gives LPR-triMN the intrinsic property of activating the dendritic cells to which they bind.
- Activated dendritic cells expressing co-stimulation molecules such as CD80 in turn enable the activation of CD4 + and CD8 + T cells. LPR-triMNs are therefore able to stimulate an immune response even when they do not contain a molecule. of immimogenic interest.
- the dendritic MoDCs cells are cultured in the presence of LPR-MN containing GFP PARNm for 6 h. At the end of these 6 hours, the MoDCs cells are put in contact 12h extra with either LPS (positive activation control of MoDCs), or LPR-MN or LPR-triMN.
- LPS positive activation control of MoDCs
- LPR-MN or LPR-triMN LPR-MN
- the lipopolyplexes used for this second stimulation do not contain coding RNA but contain single-stranded PolyU RNA (ssPolyU).
- the expression of GFP and Activation markers HLA-DR, CD80 and CD83 is measured by cytometry after 18h of culture in total.
- Figure 4 shows that the first incubation of MoDCs cells with LPR-MN induces GFP expression.
- the secondary mcubation of the same cells with LPS or LPR-triMN ssPolyU lowers the expression level of GFP (FIG. 4A) and induces the expression of activation markers CD80 (FIG. 4B), CD83 and HLA- DR ( Figure 4C).
- the addition of LPR-MN does not induce activation of dendritic cells, which continue to express GFP for a prolonged period.
- mice were injected intradermally with PBS, LPR-MN or LPR-triMN.
- Figure 1A shows that injection of LPR-triMN induces a local inflammatory reaction at the site of the injection.
- Microscopic analysis of the site of the injection shows that the injection of LPR-triMN induces an increase in the volume of the inguinal draining lymph nodes.
- CCR7 coordinates the primary immune response by establishing functional microenvironments in secondary lymphoid organs. Kabashima et al., (2007) CXCL12-CXCR4 Engagement Is Required for Migration of Cutaneous Dendritic Cells, Am J Pathol 171: 1249-57).
- mice were intradermally injected into the arch with PBS, LPR-MN or LPR-triMN comprising a rhodamine-labeled lipid.
- the draining ganglia of the mice were removed 6 hours after injection and then labeled with an anti-CD169 antibody (siglec-1).
- the fluorescence microscopy analysis thus makes it possible to visualize the localization of LPR (rhodamine signal) and macrophages of the subcapsular sinus (CD169 + signal).
- Figure 6 shows that naked LPRs, LPR-MN and LPR-triMN, are detectable in popliteal ganglia, at the cortical zone where dendritic cells (unlabeled) are also located. Some of the LPR-triMNs are also detectable in non-CD 169 labeled areas indicating that other cells can capture LPR-triMNs. It should be noted that dendritic cells are found in all ganglionic zones.
- mice were intradermally injected into the arch with PBS, bare LPRs, diethyl ether LPRs, LPR-MNs or LPR-triMNs.
- the popliteal lymph nodes of the mice were taken 24 hours after the injection.
- the presence in the popliteal draining ganglia of dendritic cells (DCs), and more particularly activated dendritic cells expressing the Ly6C marker (Ly6C + cells) or Lyog (Ly6G + cells) was analyzed by flow cytometry.
- FIG. 7 shows that the injection of LPR-triMN induces not only a significant increase in the number and percentage of dendritic cells (FIGS.
- FIG. 7A and 7B but also the percentage of activated dendritic cells (FIG. 7C) and inflammatory cells (FIG. 7D). among the dendritic cells contained in the draining ganglia of the injected mice.
- the number of dendritic cells, whether activated or not, is not significantly modified after the injection of LPR nudes, LPR us diether or LPR-MN versus control (PBS).
- LPR-triMNs comprising the tri-mannosylated lipid of the invention can induce an immune reaction (recruitment and activation of the dendritic cells in the draining ganglia at the injection site) when they are injected into patients. mouse.
- the LPR-triMNs contain single-stranded PolylJ RNA (ssPolyU) and do not serve as a vector for the introduction of molecules. of immunogenic interest.
- ssPolyU single-stranded PolylJ RNA
- MoDCs dendritic cells from HLA-A2 donors were incubated for 24 hours with naked LPRs, LPR-MNs or LPR-triMNs containing HPV16 E7 oncoprotein mRNA (E7 mRNA) or single-stranded PolyU (ssPolyU). MoDCs cells were then used to sensitize autologous CD3 + T cells in co-cure for 3 days. After 3 days of co-culture, the T cells were placed in a medium enriched in IL-7 and IL-15. At 17, the sensitized T cells were returned to the presence of MoDCs previously loaded with HLA-A2 restricted E7 peptides (HLA2 allele) for 16 h.
- HLA2 allele HLA-A2 restricted E7 peptides
- FIG. 8 shows that LPR-triMNs containing no coding RNA induce secretion of IFN- ⁇ in CD4 + lymphocytes (FIG. 8.4) and CD8 + lymphocytes (FIG. 8B) slightly higher than that induced by bare LPRs. This observation confirms the intrinsic adjuvant effect of LPR-triMN. LPR-triMNs containing E7 mRNA were able to induce INF- ⁇ secretion in CD4 + lymphocytes (FIG.
- LPR-MN induce only a low secretion of INF- ⁇ , whether they contain ssPolyU RNA or E7 mRNA.
- mice were vaccinated with an equimolar mixture of LPR-E7 and LPR-E7-DC-LAMP. provides a better response to vaccination (Mockey et al.
- DC-LAMP is a glycoprotein of the membrane of lysosomes and late endosomes, which plays a role in the loading of peptides on MHC-II, allowing to actively induce Th1 responses
- the use of a chimeric nucleic acid sequence makes it possible to orient E7 towards the MHC-II pathway and to improve the immune response.
- mice Single-stranded (ysPolyU) coding was used as a control. Injections were performed on D0, D7 and D15. At day 21, the mice were sacrificed and their spleens removed. The splenocytes thus isolated were incubated in the presence of E7 peptides and their secretion of INF- ⁇ was analyzed by ELISpot. Different modes of vaccination were compared. Groups of 5 mice were thus vaccinated with 21 ⁇ g of LPR-triMN-ssPolyU (control) intravenously or with LPR-triMN-E7 / E7-DC-LAMP: 21 ⁇ g intravenously, 7 ⁇ intradermally or 7 ⁇ g ( Fig.
- LPR-triMN are therefore effective vaccination vectors for the induction of an antigen-specific T response of interest in vaccinated subjects.
- LPR-triMNs have a therapeutic vaccine effect in a mouse model of HPV-induced cancer.
- the therapeutic effect of vaccination with LPR-E7 was evaluated in groups of 5 mice to which 50000 cells of the TC-1 syngeneic tumor line were administered by intradermal injection in the ectopic position (left flank). These tumor cells express the oncoprotein E7.
- mice then received two intradermal injections (7 days and 9 days after tumor cell inoculation) of PBS (negative control) or 7 ⁇ g of: LPR-MN-ssPolyU, LPR-MN-E7 / E7-DC -LAMP, LPR-triMN-ssPolyU or LPR-triMN-E7 / E7-DC-LAMP.
- Tumor growth was evaluated every 2 days by caliper measurement according to the formula (LxI 2 ) / 2. Animals whose tumor volume became critical (> 20G0 mm 2 ) were sacrificed.
- Figure 10 shows that after 4 months, 9 of the 9 mice vaccinated with LPR-triMN-E7 / E7-DC-LAMP are still alive without having developed a tumor. After 4 months, 3 of the 10 mice immunized with LPR-triMN-ssPolyU, not containing coding mRNA, are also still alive without having developed a tumor. Their survival is likely attributable to the adjuvant effect of LPR-triMN, which can indeed stimulate the immune response of vaccinated mice. After 4 months, 3 of the 9 mice vaccinated with LPR-MN-E7 / E7-DC-LAMP are still alive without having developed a tumor. Injection of PBS or LPR-MN-ssPolyU has no therapeutic effect.
- Figure 10B compares the survival of vaccinated mice with different LPRs.
- the use of LPR-triMN for vaccination against an antigen expressed by Tumor cells has a significant therapeutic effect and prevents the formation of tumors in more than half of the vaccinated mice.
- LPR-triMN As a therapeutic vaccine, two other tumor models were tested: the B16F0 melanoma model (expressing MARTI), and the EG17 cell expressing EG7 cell model.
- the therapeutic effect of a vaccination with LPR-triMN was evaluated in groups of 10 mice to which cells of the tumor line B 16F0 or EG7 were administered by intradermal injection in the ectopic position (left flank). The mice were then vaccinated on days 7 and 9 post-injection with PBS, LPR-triMN comprising ssPolyU RNA or LPR-triMN comprising M ARTI or OVA mRNA. respectively.
- Figure 11 shows that only vaccination with LPR-triMN comprising MARTI or OVA mRNA makes it possible to limit the growth of tumors.
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Abstract
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| FR1655296A FR3052361B1 (fr) | 2016-06-09 | 2016-06-09 | Diethers d’archaea lipides synthetiques |
| PCT/FR2017/051481 WO2017212197A1 (fr) | 2016-06-09 | 2017-06-09 | Diéthers d'archaea lipides synthétiques |
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| EP17735199.6A Withdrawn EP3468566A1 (fr) | 2016-06-09 | 2017-06-09 | Diéthers d'archaea lipides synthétiques |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230321226A1 (fr) |
| EP (1) | EP3468566A1 (fr) |
| FR (1) | FR3052361B1 (fr) |
| WO (1) | WO2017212197A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020101859A1 (de) * | 2020-01-27 | 2021-07-29 | Oxana Karpf | Verfahren zur Reduktion der Population mindestens einer adipogenen Bakterienart umfassend Bakteriophagen sowie Bakteriophagen und deren Verwendung |
| IL326647A (en) | 2023-09-01 | 2026-04-01 | Novoarc Gmbh | Lipid nanoparticles with a nucleic acid charge and an ionizable lipid |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993008202A1 (fr) * | 1991-10-23 | 1993-04-29 | National Research Council Of Canada | Formation de liposomes stables a partir d'extraits de liposomes d'archeobacteries (archaea) |
| DE19736592C2 (de) | 1997-08-22 | 2002-01-24 | Bernina Biosystems Gmbh | Tetraetherlipidderivat, ein oder mehrere Tetraetherlipidderivate enthaltendes Liposom oder Lipidagglomerat und pharmazeutische Zusammensetzung |
| ATE420657T1 (de) | 1999-10-12 | 2009-01-15 | Ca Nat Research Council | Archaeosome als adjuvantien und träger für azelluläre impstoffe zur induktion einer zytotoxischen t-lymphozyten (ctl) immunantwort |
| FR2878846B1 (fr) * | 2004-12-07 | 2007-02-23 | Enscr | Composes analogues de lipides membranaires d'archaebacteries et compositions liposomiales integrant de tel composes |
| WO2007112567A1 (fr) | 2006-03-30 | 2007-10-11 | National Research Council Of Canada | Adjuvants glycolipidiques synthétiques d'archaea |
-
2016
- 2016-06-09 FR FR1655296A patent/FR3052361B1/fr not_active Expired - Fee Related
-
2017
- 2017-06-09 US US16/308,103 patent/US20230321226A1/en not_active Abandoned
- 2017-06-09 WO PCT/FR2017/051481 patent/WO2017212197A1/fr not_active Ceased
- 2017-06-09 EP EP17735199.6A patent/EP3468566A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR3052361B1 (fr) | 2019-08-23 |
| FR3052361A1 (fr) | 2017-12-15 |
| WO2017212197A1 (fr) | 2017-12-14 |
| US20230321226A1 (en) | 2023-10-12 |
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