EP3568405A1 - Peptide immunomodulateur - Google Patents
Peptide immunomodulateurInfo
- Publication number
- EP3568405A1 EP3568405A1 EP18701784.3A EP18701784A EP3568405A1 EP 3568405 A1 EP3568405 A1 EP 3568405A1 EP 18701784 A EP18701784 A EP 18701784A EP 3568405 A1 EP3568405 A1 EP 3568405A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seq
- peptide
- amino acid
- acid sequence
- amino acids
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/08—Tripeptides
- C07K5/0802—Tripeptides with the first amino acid being neutral
- C07K5/0804—Tripeptides with the first amino acid being neutral and aliphatic
- C07K5/0808—Tripeptides with the first amino acid being neutral and aliphatic the side chain containing 2 to 4 carbon atoms, e.g. Val, Ile, Leu
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/43504—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates
- C07K14/43563—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates from insects
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/10—Antimycotics
-
- 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
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/08—Tripeptides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/10—Tetrapeptides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/10—Tetrapeptides
- C07K5/1002—Tetrapeptides with the first amino acid being neutral
- C07K5/1005—Tetrapeptides with the first amino acid being neutral and aliphatic
- C07K5/101—Tetrapeptides with the first amino acid being neutral and aliphatic the side chain containing 2 to 4 carbon atoms, e.g. Val, Ile, Leu
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/08—Linear peptides containing only normal peptide links having 12 to 20 amino acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention relates to an isolated peptide, a pharmaceutical composition comprising this peptide and the use of this peptide or composition as a medicament, especially as an anti-infective or anti-cancer agent.
- One of these strategies is aimed at activating the immune system with the development of immunomodulatory agents capable in particular of reinforcing the action of the immune system against pathogens.
- the inventors have discovered that the peptide P17 and its derivatives exhibit immunomodulatory activity.
- the peptide P17 is a peptide present in the venom of the ants Tetramorium bicarinatum. This 13 amino acid peptide was described by Rifflet et al. (Identification and characterization of a novel antimicrobial peptide from the venom of the ant Tetramorium bicarinatum, Peptides 2012 Dec; 38 (2): 363-70) but had not shown any interesting properties. In particular, it had shown no antibacterial property in vitro.
- P17 and its derivatives increase the release of pro-inflammatory cytokines and promote the secretion of oxygen free radicals.
- the immunomodulation generated by P17 and its derivatives is such as to eliminate pathogens such as yeast C. albicans and to reduce the proliferation of cancer cells by macrophages derived from human monocytes thus polarized.
- This immunomodulation is mediated by lectin type C receptors such as the mannose receptor or dectin 1 which mediate the innate immune response against many pathogens.
- lectin type C receptors such as the mannose receptor or dectin 1 which mediate the innate immune response against many pathogens.
- These receptors recognize molecular motifs, such as glucans, present on the surface of many pathogens and abnormally expressed on the surface of cancer cells.
- P17 and its derivatives are therefore particularly promising candidates for the treatment or the prevention of numerous pathologies such as fungal, bacterial, viral or cancerous pathologies.
- the subject of the present invention is an isolated peptide consisting of a 3 to 39 amino acid sequence derived from the amino acid sequence SEQ ID NO: 1, said peptide having an amino acid sequence selected from the group consisting of :
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising:
- the present invention also relates to an isolated peptide for use as a medicament; the isolated peptide consisting of a sequence of 3 to 39 amino acids derived from the amino acid sequence SEQ ID NO: 1 characterized in that said peptide has an amino acid sequence selected from the group consisting of:
- the present invention relates to an isolated peptide consisting of a sequence of 3 to 39 amino acids derived from the amino acid sequence SEQ ID NO: 1 characterized in that said peptide has an amino acid sequence selected from the group consisting of: a) sequences of 3 to 39 amino acids comprising at least residues 6 to 8 of SEQ ID NO: 1 and
- the percent identity of an amino acid sequence is defined as the percentage of amino acid residues in a sequence to be compared that are identical to a reference sequence after sequence alignment, introducing gaps if necessary, to obtain a maximum sequence identity.
- Sequence alignment to determine the percent identity of a sequence can be achieved in a variety of ways known to those skilled in the art, for example using available public software such as BLAST (Altschul et al, J. Mol Biol., 1990, 215, 403-). This software is preferably used with default settings.
- said isolated peptide consists of a sequence of 3 to 39 amino acids derived from the amino acid sequence SEQ ID NO: 1 and has an amino acid sequence selected from the group consisting of:
- the peptides according to the invention may have from 3 to 30, from 3 to 26, or more preferably from 5 to 20 amino acids or even more preferably 5 to 15 amino acids.
- the isolated peptide may have 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 or 39 acids amines.
- said peptide has an amino acid sequence selected from the group consisting of:
- the peptides according to the invention comprise at least residues 1, 2, 3, 4, 5 or 6 to 8, 9, 10, 11, 12 or 13 of SEQ ID NO: 1 or have sequences of amino acids having at least 70%, 80%, 90% or 95% identity with said peptides comprising at least residues 1, 2, 3, 4, 5 or 6 to 8, 9, 10, 1 1,
- the peptides according to the invention comprise at least residues 1, 2, 3, 4, 5 or 6 to 8, 9, 10, 11, 12 or 13 of SEQ ID NO: 1.
- the peptides have at least 95% identity with said sequence defined above.
- the peptide is capable of binding to the macrophage membrane derived from monocytes. It can trigger signaling pathways responsible for the production of cytotoxic mediators.
- the peptide is capable of inducing the production of oxygen free radicals and IL-1 ⁇ by macrophages derived from monocytes.
- the ability of peptides to induce the production of oxygen free radicals and IL-1 ⁇ can easily be measured by a person skilled in the art. Such tests are described in particular in the Materials and Methods section described below.
- the peptide consists of a sequence of 5 to 15 amino acids comprising at least residues 5 to 9 of the amino acid sequence SEQ ID NO: 1.
- the peptide consists of an amino acid sequence selected from the group consisting of:
- SEQ ID NO: 2 SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 7, SEQ ID NO: 8, SEQ ID NO: 9, SEQ ID NO: 10, SEQ ID NO: 1 1, SEQ ID NO: 12, SEQ ID NO: 13, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16 and SEQ ID NO: 17, and
- the peptide consists of an amino acid sequence selected from the group consisting of:
- the peptides are recombinant or synthetic peptides.
- the peptides may be prepared by standard techniques known to those skilled in the art, in particular by solid or liquid phase synthesis or by expression of a recombinant DNA in a suitable cellular system (eukaryotic or prokaryotic).
- a suitable cellular system eukaryotic or prokaryotic.
- the peptides can be synthesized in the solid phase originally described by Merrifield et al (J. Am Chem Soc, 1964, 85: 2149-2154) according to the Fmoc technique and purified by reversed-phase high performance liquid chromatography.
- peptides are synthetic peptides.
- the invention encompasses the peptides according to the invention which have undergone a modification since said peptide retains its immunomodulatory properties.
- the invention notably encompasses natural or synthetic variant peptides obtained by mutation (insertion, deletion, substitution) of one or more amino acids in the sequence of P17 (SEQ ID NO: 1) since said peptide derived from P17 retains its immunomodulatory properties.
- the peptides can be amidated at the C-terminal.
- the peptides can be N-terminal acylated.
- the peptides are amidated at the C-terminal.
- C-terminal amide is conventionally meant the presence of an NH 2 group at the C-terminus of the peptide (unsubstituted primary amide).
- the invention also relates to the C-terminal modified peptides having a modification other than the C-terminal amidation described above, since said modified P17-derived peptide retains its immunomodulatory properties.
- the non-substituted primary amide (RCONH 2 ) at the C-terminal end of the C-terminal amide peptide can for example be replaced by a monosubstituted primary amide (RCONHPt ! ) Or a di-substituted primary amide (RCONR ⁇ ).
- the peptide having the amino acid sequence SEQ ID NO: 1 and being amidated at the C-terminal is excluded.
- the invention encompasses peptides derived from P17 or a peptide as defined above in which certain amino acids have been substituted by an amino acid with similar properties.
- hydrophobic amino acids such as residues L1, L6 and L13, F2, 15, 19 and / or A1 may be substituted with another hydrophobic amino acid selected from the group consisting of A, V, L, I, M, F, W and unnatural hydrophobic amino acids such as tertioleucine
- the residues K3, ⁇ 8, ⁇ 10 and / or ⁇ 12 may be substituted with another natural basic amino acid such as R and / or H or non-natural such as ornithine, homolysine and / or para-aminophenylalanine
- the residues E4 and / or E7 may be substituted with another acidic amino acid such as D or an unnatural acidic amino acid such as paracarboxyphenylalanine.
- the peptide may for example consist of a variant of P17 or of a P17 derivative as described above in which one or more hydrophobic amino acids such as residues L1, L6 and L13, F2, 15, 19 and / or A1 1 have been replaced by another hydrophobic amino acid selected from the group consisting of A, V, L, I, M, F, W and unnatural hydrophobic amino acids such as tertioleucine.
- one or more hydrophobic amino acids such as residues L1, L6 and L13, F2, 15, 19 and / or A1 1 have been replaced by another hydrophobic amino acid selected from the group consisting of A, V, L, I, M, F, W and unnatural hydrophobic amino acids such as tertioleucine.
- residues K8, K10 and / or K12 are retained. More preferably, residues K3, K8, K10 and / or K12 are retained.
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1;
- said peptide has an amino acid sequence selected from the group consisting of:
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1; said peptide has an amino acid sequence selected from the group consisting of:
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1; said isolated peptide has an amino acid sequence selected from the group consisting of: ⁇ ) SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16 and SEQ ID NO: 17 and
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1; said isolated peptide has an amino acid sequence selected from the group consisting of:
- the present invention also relates to a multimer of peptides according to the invention and / or of the peptide having the amino acid sequence SEQ ID NO: 1, said peptides being amidated in C terminal or not.
- the invention may relate to a dimer or a trimer.
- the multimer may be a homomer or a heteromer.
- the present invention also relates to an isolated polynucleotide encoding a peptide as defined above or a peptide P17.
- the sequence of said polynucleotide is that of the cDNA coding for said peptide.
- Said sequence may advantageously be modified in such a way that codon usage is optimal in the host in which it is expressed.
- the present invention also relates to a recombinant vector comprising said polynucleotide.
- said vector is an expression vector comprising all the elements necessary for the expression of the peptide.
- said vector comprises an expression cassette including at least one polynucleotide as defined above, under the control of appropriate transcriptional regulatory and possibly translational sequences (promoter, activator, intron, initiation codon ( ATG), stop codon, polyadenylation signal, splice site).
- the present invention also relates to a modified prokaryotic or eukaryotic host cell, comprising a peptide, a polynucleotide or a vector as defined above; the cell can be stably or transiently modified.
- the present invention also relates to a pharmaceutical composition characterized in that it comprises a peptide as defined above and a pharmaceutically acceptable excipient.
- composition may also comprise the P17 peptide and a pharmaceutically acceptable excipient.
- the pharmaceutical composition can comprise
- a peptide consisting of a sequence of 3 to 39 amino acids derived from the amino acid sequence SEQ ID NO: 1, characterized in that said peptide has an amino acid sequence selected from the group consisting of:
- the pharmaceutical composition can comprise
- a peptide consisting of a sequence of 3 to 39 amino acids derived from the amino acid sequence SEQ ID NO: 1, characterized in that said peptide has an amino acid sequence selected from the group consisting of:
- the peptides of the pharmaceutical composition may have from 3 to 30, from 3 to 26, or more preferably from 5 to 20 amino acids or even more preferably 5 to 15 amino acids.
- the isolated peptide may have 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 or 39 amino acids.
- composition may especially comprise a peptide consisting of a sequence of 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 or 39 amino acids derived from the amino acid sequence SEQ ID NO: Characterized in that said peptide has an amino acid sequence selected from the group consisting of:
- amino acid sequences comprising at least residues 1, 2, 3, 4, 5 or 6 to 8, 9, 10, 11, 12 or 13 of SEQ ID NO: 1 and
- the composition may especially comprise a peptide consisting of a sequence of 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 or 39 amino acids derived from the amino acid sequence SEQ ID NO: 1 characterized in that said peptide has an amino acid sequence selected from the group consisting of:
- amino acid sequences comprising at least residues 1, 2, 3, 4 or 5 to 9, 10, 1 1, 12 or 13 of SEQ ID NO: 1 and
- amino acid sequences having at least 70%, 80%, 90% or 95% identity with said sequence in a).
- the pharmaceutical composition comprises a peptide having an amino acid sequence selected from the group consisting of:
- SEQ ID NO: 1 SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 7, SEQ ID NO: 8, SEQ ID NO: 9, SEQ ID NO: 10, SEQ ID NO: 1 1, SEQ ID NO: 12, SEQ ID NO: 13, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16 and SEQ ID NO: 17 and
- the pharmaceutical composition comprises a peptide having an amino acid sequence selected from the group consisting of: a) SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, and SEQ ID NO: 17, and ⁇ ) sequences of 3 to 39 amino acids having at least 70%, 80%, 90% or 95% identity with said sequence a).
- the peptide having the amino acid sequence SEQ ID NO: 1 is excluded from the pharmaceutical composition. According to one embodiment, the peptide having the amino acid sequence SEQ ID NO: 1 and being C-terminal amide is excluded from the pharmaceutical composition.
- said peptide has the amino acid sequence SEQ ID NO: 1. According to one embodiment of this variant, the peptide has the amino acid sequence SEQ ID NO: 1 and is amidated at the C-terminal.
- the peptides may be recombinant or synthetic peptides.
- the invention encompasses the peptides according to the invention which have undergone a modification since said peptide retains its immunomodulatory properties.
- the invention notably encompasses natural or synthetic variant peptides obtained by mutation (insertion, deletion, substitution) of one or more amino acids in the sequence of P17 (SEQ ID NO: 1) since said peptide derived from P17 retains its immunomodulatory properties.
- the peptides can be amidated at the C-terminal.
- the peptides can be N-terminal acylated.
- the peptides are amidated at the C-terminal.
- C-terminal amide is conventionally meant the presence of an NH 2 group at the C-terminal end of the peptide (unsubstituted primary amide).
- the invention also relates to C-terminal modified peptides having a modification other than the C-terminal amidation described above, since said modified P17-derived peptide retains its immunomodulatory properties.
- the non-substituted primary amide (RCONH 2 ) at the C-terminal of the amide peptide may for example be replaced by a monosubstituted primary amide (RCONHPt ! ) Or a di-substituted amide (RCONP ⁇ F ⁇ ).
- the peptides may be natural or synthetic variants obtained by mutation of the abovementioned peptides.
- the variants may comprise a substitution of the hydrophobic amino acids such as residues L1, L6 and L13, F2, 15, 19 and / or A1 1 by another hydrophobic amino acid selected from the group consisting of A, V , L, I, M, F, W and non-natural hydrophobic amino acids such as tertioleucine, a substitution of residues K3, K8, K10 and / or K12 by another natural basic amino acid such as R and / or H or not natural, such as ornithine, homolysine and / or para-aminophenylalanine and / or a substitution of residues E4 and / or E7 by another acidic amino acid such as D or an unnatural amino acid such as paracarboxyphenylalanine.
- the peptide may for example consist of a variant of P17 or of a P17 derivative as described above in which one or more hydrophobic amino acids such as residues L1, L6 and L13, F2, 15, 19 and / or A1 1 have been replaced by another hydrophobic amino acid selected from the group consisting of A, V, L, I, M, F, W and unnatural hydrophobic amino acids such as tertioleucine.
- residues K8, K10 and / or K12 are retained. More preferably, residues K3, K8, K10 and / or K12 are retained.
- the present invention also relates to a multimer of peptides according to the invention, and / or of the peptide having the amino acid sequence SEQ ID NO: 1, said peptides being amidated in C terminal or not.
- the invention may relate to a dimer or a trimer.
- the multimer may be a homomer or a heteromer.
- the pharmaceutically acceptable excipient may for example be a carrier selected from the group consisting of sterile water, saline, glucose, dextrose or buffered solutions.
- the pharmaceutically acceptable excipient may also be a diluent, a stabilizer, a preservative, a wetting agent, an emulsifying agent, a buffer, a viscosity enhancing additive.
- PBS can be excluded from pharmaceutically acceptable excipients.
- the pharmaceutical composition comprises an effective peptide dose for obtaining a prophylactic / therapeutic effect. This dose is determined and adjusted according to factors such as the age, sex and weight of the subject.
- the pharmaceutical composition is generally administered according to the usual protocols, at doses and for a time sufficient to induce an immunomodulatory effect. Administration may be subcutaneous, intramuscular, intravenous, intradermal, intraperitoneal, oral, sublingual, rectal, vaginal, intranasal, inhalation or transdermal.
- the pharmaceutical composition is in a dosage form adapted to a chosen administration: sterile injectable solution, powder, tablets, capsules, suspension, syrup, suppositories, which are prepared according to the standard protocols.
- the pharmaceutical composition may further comprise another therapeutic agent.
- the therapeutic agent may be for example selected from the group consisting of antifungal, anticancer, antiviral, antiparasitic and antibiotic.
- P17 and its derivatives activate the cytotoxic functions of macrophages derived from human peripheral blood monocytes.
- the macrophages polarized by P17 or its derivatives have a high capacity for recognition and phagocytosis of pathogens, which express on their walls conserved molecular structures (PAMP), and tumor cells, with altered glycanic patterns, recognized by the receptors.
- PAMP conserved molecular structures
- Type C lectin receptors are involved in the innate immune response against many pathogens such as:
- the invention also relates to a peptide and / or a pharmaceutical composition
- a peptide and / or a pharmaceutical composition comprising said peptide and a pharmaceutically acceptable excipient for use as a medicament, said peptide consisting of a 3 to 39 amino acid sequence derived from the amino acid sequence SEQ ID NO: 1 characterized in that said peptide has an amino acid sequence selected from the group consisting of:
- the invention relates to a method of treatment in a subject to be treated comprising administering to said subject an effective amount of said peptide or pharmaceutical composition comprising said isolated peptide and a pharmaceutically acceptable excipient.
- the invention also relates to the use of said peptide or pharmaceutical composition comprising said peptide and a pharmaceutically acceptable excipient in the manufacture of a medicament.
- said peptide for use as a medicament consists of a sequence of 3 to 39 amino acids derived from the amino acid sequence SEQ ID NO: 1, said peptide having an amino acid sequence selected in the group consisting of:
- Said peptide may have from 3 to 30, from 3 to 26, or more preferably from 5 to 20 amino acids or even more preferably 5 to 15 amino acids.
- the isolated peptide may have 3, 4, 5, 6, 7, 8, 9, 10, 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 or 39 amino acids.
- said peptide may consist of a sequence of 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 or 39 amino acids derived from the amino acid sequence SEQ ID NO: 1, said peptide having an amino acid sequence selected from the group consisting of: a) the amino acid sequences comprising at least residues 1, 2, 3, 4, 5 or 6 to 8, 9, 10, 11, 12 or 13 of SEQ ID NO: 1 and
- amino acid sequences having at least 70%, 80%, 90% or 95% identity with said sequence in a).
- said peptide consists of a sequence of 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 or 39 amino acids derived from the amino acid sequence SEQ ID NO: 1 characterized in said peptide has an amino acid sequence selected from the group consisting of:
- amino acid sequences comprising at least residues 1, 2, 3, 4 or 5 to 9, 10, 1 1, 12 or 13 of SEQ ID NO: 1 and
- amino acid sequences having at least 70%, 80%, 90% or 95% identity with said sequence in a).
- the peptide has an amino acid sequence selected from the group consisting of:
- SEQ ID NO: 1 SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 7, SEQ ID NO: 8, SEQ ID NO: 9, SEQ ID NO: 10, SEQ ID NO: 1 1, SEQ ID NO: 12, SEQ ID NO: 13, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16 and SEQ ID NO: 17 and
- said peptide for use as a medicament has an amino acid sequence selected from the group consisting of: a) SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, and SEQ ID NO: 17, and
- sequences of 3 to 39 amino acids having at least 70%, 80%, 90% or 95% identity with said sequence a).
- said peptide has the amino acid sequence SEQ ID NO: 1. According to a preferred embodiment, the peptide has the amino acid sequence SEQ ID NO: 1 and is amidated at the C-terminal.
- the peptide does not have the amino acid sequence SEQ ID NO: 1. According to an alternative embodiment, the peptide is not the peptide which has the amino acid sequence SEQ ID NO: 1 and which is C-terminal amidated.
- the peptides may be recombinant or synthetic peptides.
- the invention encompasses the peptides according to the invention which have undergone a modification since said peptide retains its immunomodulatory properties.
- the invention notably encompasses natural or synthetic variant peptides obtained by mutation (insertion, deletion, substitution) of one or more amino acids in the sequence of P17 (SEQ ID NO: 1) since said peptide derived from P17 retains its immunomodulatory properties.
- the peptides can be amidated at the C-terminal.
- the peptides can be N-terminal acylated.
- the peptides are amidated at the C-terminal.
- C-terminal amide is conventionally meant the presence of an NH 2 group at the C-terminal end of the peptide (unsubstituted primary amide).
- the invention also relates to the C-terminal modified peptides having a modification other than the C-terminal amidation described above, since said modified P17-derived peptide retains its immunomodulatory properties.
- the non-substituted primary amide (RCONH 2 ) at the C-terminal of the amide peptide may for example be replaced by a monosubstituted primary amide (RCONHRi) or a di-substituted amide (RCONRi R 2 ).
- the peptides may be natural or synthetic variants obtained by mutation of the abovementioned peptides.
- the variants may comprise a substitution of the hydrophobic amino acids such as residues L1, L6 and L13, F2, 15, 19 and / or A1 1 by another hydrophobic amino acid selected from the group consisting of A, V , L, I, M, F, W and non-natural hydrophobic amino acids such as tertioleucine, a substitution of residues K3, K8, K10 and / or K12 by another natural basic amino acid such as R and / or H or not natural such as ornithine, homolysine and / or para-aminophenylalanine and / or a substitution of residues E4 and / or E7 by another acidic amino acid such as D or an unnatural amino acid such as paracarboxyphenylalanine.
- the peptide may for example consist of a variant of P17 or of a P17 derivative as described above in which one or more hydrophobic amino acids such as residues L1, L6 and L13, F2, 15, 19 and / or A1 1 have been replaced by another hydrophobic amino acid selected from the group consisting of A, V, L, I, M, F, W and unnatural hydrophobic amino acids such as tertioleucine.
- residues K8, K10 and / or K12 are retained. More preferably, residues K3, K8, K10 and / or K12 are retained.
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1; said peptide has an amino acid sequence selected from the group consisting of:
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1; said peptide has an amino acid sequence selected from the group consisting of:
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1; said isolated peptide has an amino acid sequence selected from the group consisting of:
- the isolated peptide consists of a sequence of 5 to 20 amino acids derived from the amino acid sequence SEQ ID NO: 1; said isolated peptide has an amino acid sequence selected from the group consisting of:
- the present invention also relates to a multimer of peptides according to the invention, and / or of the peptide having the amino acid sequence SEQ ID NO: 1, said peptides being amidated in C terminal or not.
- the invention may relate to a dimer or a trimer.
- the multimer may be a homomer or a heteromer.
- the inventors have shown that P17 and its derivatives lead to the production of pro-inflammatory cytokines. Therefore, the subject of the invention is also said peptide or said pharmaceutical composition for their use as a proinflammatory agent.
- P17-polarized macrophages have overexpression of type C lectin receptors. These receptors are involved in the immune response against many pathogens.
- the invention relates to said peptide or / and said pharmaceutical composition for its use in the prevention or treatment of a disease caused by a pathogen recognized by type C lectin receptors, preferably by mannose or dectin receptors.
- Pathogens can be:
- bacterium selected from the group consisting of Streptococcus pneumoniae, Klebellia pneumoniae, Cryptococcus neoformans and Mycobacterium tuberculis,
- Candida albicans a fungus, for example Candida albicans
- parasite for example parasite selected from the group consisting of Leish mania donovani, Pneumocystis carinii and Trypanosoma cruzi.
- the invention thus relates to a method for the prevention or treatment of a disease caused by a pathogen recognized by a lectin type C receptor in a subject to be treated comprising administering to said subject an effective amount of said peptide or said pharmaceutical composition comprising said isolated peptide and a pharmaceutically acceptable excipient.
- the disease caused by a pathogen recognized by a lectin type C receptor is preferably a fungal infection, more preferably a candidiasis.
- Type C lectin receptors are also involved in the immune response against tumor cells. Therefore, said peptide may be for use as an anticancer agent; in the treatment of cancer.
- the invention therefore also relates to a method for preventing or treating cancer in a subject to be treated comprising administering to said subject a an effective amount of said peptide or pharmaceutical composition comprising said isolated peptide and a pharmaceutically acceptable excipient.
- Figure 1 shows the elimination of C. albicans by macrophages derived from human monocytes treated or not treated with P17 in vitro.
- Figure 2 shows the binding and phagocytosis capacity of C. albicans by macrophages derived from human monocytes treated or not with P17.
- Figure 3 shows the effect of P17 on the production of oxygen free radicals (RLO) and cytokines, such as NL- ⁇ ⁇ , TNF ⁇ , IL-10 and IL-12, by macrophages derived of human monocytes in response to C. albicans stimulation.
- RLO oxygen free radicals
- cytokines such as NL- ⁇ ⁇ , TNF ⁇ , IL-10 and IL-12
- Figure 4 shows the effect of P17 on protein expression of lectin C-type receptors.
- FIG. 5 shows the effect of P17 on the expression of marker genes for classical and alternative macrophage differentiation.
- FIG. 6 shows the effect of P17 on the expression of genes encoding PPAR- ⁇ and its target SRB1, and on the expression of the Dectin-1 and MR membrane receptors in the presence of GW9662, an irreversible antagonist of PPAR- ⁇ in macrophages derived from human monocytes.
- Figure 7 shows the effect of P17 on the expression of genes encoding enzymes of arachidonic acid metabolism in macrophages derived from human monocytes.
- Figure 8 shows the effect of P17 on the secretion of LTB4 by macrophages derived from human monocytes.
- FIGS. 9A-C show the concentration of intracellular calcium induced by P17 compared to negative controls (A), in the presence of pertussis toxin (B) and by desensitizing with fMLP (N-Formylmethionine-leucyl-phenylalanine peptide) (C ).
- fMLP N-Formylmethionine-leucyl-phenylalanine peptide
- Figure 10 shows the effect of BAPTA (calcium chelator) on the antimicrobial effect of P17, the release of reactive oxygen species (ROS) and IL-1 ⁇ .
- BAPTA calcium chelator
- Figure 11 shows the effect of administration of P17 in vivo on body weight of C. albicans-induced gastrointestinal candidiasis.
- Figure 12 shows the effect of P17 administration in vivo on gastrointestinal colonization at 6 days post infection.
- Figures 13A-E show the effect of administration of P17 in infected mice on the ability of their peritoneal macrophages to (AB) eliminate and phagocytose Candida albicans, (C) to produce ROS, and (DE) to release IL- ⁇ and IL-12.
- Figure 14 schematizes the mode of action of P17.
- FIG. 15 shows the number of T lymphoma cells (EL4) co-cultured with macrophages treated or not with P17.
- Figure 16 shows the ability of ROS production of macrophages treated or not treated with P17 in response to EL4 tumor cells.
- Figure 17 shows the effect of different fragments of P17 on ROS release by macrophages derived from human monocytes in response to C. albicans.
- Figure 18 shows the effect of different fragments of P17 on the elimination of Candida albicans by macrophages derived from human monocytes.
- Figure 19 shows the effect of C-terminal amidation of P17 on ROS production by macrophages in response to C. albicans.
- the peptide P17 used in the figures and examples below is C-terminal amide (presence of an NH 2 group at its C-terminal end). Its sequence was characterized by de novo sequencing using mass spectrometry and Edman degradation (Rifflet et al., 2012). The peptide P17 was synthesized on a Liberty automated peptide synthesizer (CEM, Saclay, France) with a purity higher than 99%. The authenticity and molecular identity of the synthetic peptides were controlled by MALDI-TOF-MS.
- the macrophages derived from human monocytes were treated or not with the P17 peptide or fragments thereof and then incubated at 37 ° C. for 24 hours. These cells were incubated for 40 min at 37 ° C. with C. albicans (at a ratio of 0.3 yeasts per macrophage) and the unbound yeasts were removed by washing. These macrophages are then incubated at 37 ° C. for 4 h. After incubation, the medium removed and the cells lysed. The colony forming units (CFU) of C. albicans were determined on Sabouraud plates after plating and cultured for 48 h at 37 ° C. Study of the binding and phagocytosis of C. albicans by macrophages derived from human monocytes
- the macrophages derived from human monocytes were treated or not with the peptide P17 and then incubated at 37 ° C. for 24 hours.
- the macrophages derived from human monocytes were brought into contact with GFP-labeled yeasts (ratio 1/6) and then incubated at 4 ° C. for 20 minutes in order to evaluate the binding. Phagocytosis was evaluated after 1 h of incubation at 37 ° C.
- the amount of C. albicans bound or ingested by macrophages derived from human monocytes was determined by measuring fluorescence using a fluorimeter (EnvisionPerkin Elmer).
- the macrophages derived from human monocytes were treated or not with the peptide P17, P17 non-amide or with the fragments of P17 following P17 (1-5), P17 (1-7), P17 (1-9), P17 (1-11), P17 (3-13), P17 (5-13), P17 (7-13) and P17 (9-13); fragments P17 (1-5), P17 (1-7), P17 (1-9), P17 (1-1-1) not being amidated at C-terminal and P17 (3-13) fragments, P17 (5-13), P17 (7-13) and P17 (9-13) being amidated at C-terminal.
- Macrophages derived from human monocytes thus treated were then incubated at 37 ° C. for 24 hours.
- ROS reactive oxygen derivatives
- ROS reactive oxygen derivatives
- the macrophages derived from human monocytes were stimulated with the peptide P17 for 24 hours, then these macrophages activated by the peptide P17 were stimulated with C. albicans at a yeast for macrophage ratio of 3: 1 for 8 h.
- the production of IL- ⁇ , TNF ⁇ , IL-10 and IL-12 in cell supernatants was determined by ELISA (OptiEIA BD Biosciences).
- the macrophages derived from human monocytes were treated or not with the peptide P17 (200 ⁇ g / ml) and then incubated at 37 ° C. for 24 hours.
- the collected cells were centrifuged at 1500 rpm for 10 min and the cell pellets were suspended in PBS supplemented with 1% fetal calf serum (FCS).
- FCS fetal calf serum
- the cells were labeled with antibodies coupled to different fluorochromes directed against the Dectin-1 receptor (mAb, R & D FAB1859C-100, 1/40), DC-SIGN (mAb, BD Biosciences 551 265, 1/20) CD16 (mAb; PNIM 0814, 1/20), CD36 (mAb, BD Biociences 550 956, 1/40) and the mannose receptor (MR-specific ligand (FITC-conjugated mannose receptor) (Sigma A7790, 1 mg / ml1 / 100)), .
- the analysis was performed by flow cytometry (Becton Dickinson FACScalibur) on a population of 10,000 cells.
- Macrophages derived from human monocytes were treated with P17 (200 ⁇ g ml) for 8 h.
- the DNA preparation was performed using a kit (EZ-10 Spin Total Column RNA Minipreps Super Kit Bio Basic) and following the manufacturer's instructions.
- the cDNA synthesis was performed according to the manufacturer's instructions (Thermo electron).
- RT-qPCR was performed on a LightCycler 480 system using the LightCycler SYBR Green I Master (Roche Diagnostics).
- the primers (Eurogentec) were performed with Primer 3 software.
- GAPDH mRNA was used as a control.
- Serially diluted pooled cDNA samples were used as the external standard in each run for quantification.
- Alox5 antisense ACT-G G A-AAC-ACG -GC A-AAA-AC sense I I -CTC-AAA-GTC-GGC-GAA-GT (SEQ ID NO: 19)
- Antisense Fcgr3 (CD16) TAC-AGC-GTG-CTT-GAG-AAG-GA (SEQ ID NO: 22)
- Antisense Fcgr2 (CD32) CCA-AAG-GCT-GTG-CTG-AAA-CT (SEQ ID NO: 24)
- Antisense Cd36 TGA-TAG-GTG-CAG-CAA-AGC-AC (SEQ ID NO: 26)
- AAA-AGG-ATC-GTG-TGC-TGC-ATC (SEQ ID NO: 29)
- Antisense Ptgs2 (COX-2) TGA-GCA-TCT-ACG-GTT-TGC-TG (SEQ ID NO: 30)
- Pla2g4a (cPLA2) Antisense GCC-TTG-GTG-AGT-GAT-TCA-GCT (SEQ ID NO: 32)
- CAA-CTT-AGA-AAC-AGC-CAA-ATG-GAA (SEQ ID NO: Sense 35)
- Alox5ap (FLAP) antisense ACC-CGC-TCA-AAG-GCA-ATG-G (SEQ ID NO: 36)
- CAC-GAA-AGC-AGG-ACC-CAG-A sense (SEQ ID NO: 37)
- ATC-TCG-CTC-CTG-GAA-GAT-GG sense (SEQ ID NO: 39)
- Tgfbl antisense ACT-G AG-GGG-AAG-GGA-CAA-CT SEQ ID NO: 50
- Antisense Lta4h ACT-GCT-TGG-AGG-ACC-AGA-GA SEQ ID NO: 54
- Mrc-1 (MR) antisense GGC-GGT-GAC-CTC-ACA-AGT-AT SEQ ID NO: 56
- GAC-TGC-AGC-AAA-GAC-ATC-CA sense (SEQ ID NO: 59)
- the intracellular calcium concentration was measured using a Fluo 3-AM fluorescent probe (Molecular Probe). Macrophage derived from human monocytes ( ⁇ 1 .5 10 5) were incubated with 1 .5 1 ⁇ 10 "6 M of Fluo 3-AM for 30 min at 37 ° C.
- the level of Ca2 + was recorded intracytosolic all 0.5 s for a total period of 3 min after the addition of P17 (200 ⁇ g / ml)
- P17 200 ⁇ g / ml
- a second injection of bacterial peptide N-Formylmethionine-leucyl-phenylalanine (fMLP) or P17 was carried out at the end of the fluorescence recording and the level of intracytosolic Ca2 + recorded for 3 min more
- macrophages derived from human monocytes were pre-incubated with U73122 (2 ⁇ ) gold HBSS without calcium for 10 min before the addition of P17 Fluorescence was quantified using the Envision fluorimetric approach (Perkin Elmer).
- mice were treated intraperitoneally (ip) with the peptide P17 (10 ⁇ g per mouse) or with saline for the control groups, 1 day before infection with C. albicans, 1 day after the infection and then every 2 days (5 injections). The body weight of each mouse was recorded daily. At day 8 post-treatment (7 days after infection), all mice were euthanized by C0 2 asphyxiation.
- the esophagus, stomach, cecum and liver were removed aseptically to evaluate C. albicans colonization.
- the peritoneal macrophages of the mice were removed and their ex vivo abilities to eliminate and phagocytize Candida albicans were determined.
- the production of ROS, IL- ⁇ and IL-12 by these macrophages in response to Candida albicans was also evaluated.
- T lymphoma T lymphoma
- the murine peritoneal macrophages were treated or not with the P17 peptide and then incubated at 37 ° C. for 24 hours. These macrophages were incubated for 40 min at 37 ° C with luminescent T lymphoma cells (EL4-luc) and unbound cells removed by washing. These macrophages are then incubated at 37 ° C. for 4 h. After incubation, the number of T lymphoma cells (EL4-luc) is evaluated by chemiluminescence.
- Figure 1 shows that the presence of P17 greatly increases the ability of human macrophages to eliminate C. albicans in vitro.
- mice with P17-treated gastrointestinal candidiasis had less weight loss than untreated mice (Fig. 1 Consistently, gastrointestinal colonization with Candida albicans was significantly lower in P17-treated mice by compared to untreated mice ( Figure 12).
- Macrophages derived from human monocytes treated with P17 have both a greater ability to recognize and phagocytize C. albicans (FIG. 2).
- P17 induces a higher production of ROS in response to stimulation by C. albicans and pro-inflammatory cytokines such as IL- ⁇ and TNF ⁇ ( Figure 3).
- the increase in the production of these cytotoxic mediators by the peptide P17 is associated with the overexpression of lectin type C receptors on the surface of macrophages derived from human monocytes (FIG. 4).
- P17 improves the anti-tumor response of macrophages.
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| FR1750280A FR3061715B1 (fr) | 2017-01-12 | 2017-01-12 | Peptide immunomodulateur |
| PCT/FR2018/050072 WO2018130790A1 (fr) | 2017-01-12 | 2018-01-12 | Peptide immunomodulateur |
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| US6004925A (en) * | 1997-09-29 | 1999-12-21 | J. L. Dasseux | Apolipoprotein A-I agonists and their use to treat dyslipidemic disorders |
| US20110111424A1 (en) * | 2001-06-21 | 2011-05-12 | Cell Signaling Technology, Inc. | Analysis of ubiquitinated polypeptides |
| EP2337795A2 (fr) * | 2008-10-01 | 2011-06-29 | Dako Denmark A/S | Multimères de mhc dans des vaccins et la surveillance immunitaire contre le cancer |
| JP6006118B2 (ja) * | 2009-12-16 | 2016-10-12 | ノヴォ ノルディスク アー/エス | Glp−1アナログ及び誘導体 |
| AU2014263279B2 (en) * | 2013-05-10 | 2018-02-15 | Academisch Ziekenhuis Leiden H.O.D.N. Lumc | Antimicrobial peptide |
| US11464839B2 (en) * | 2015-12-04 | 2022-10-11 | Mayo Foundation For Medical Education And Research | Methods and vaccines for inducing immune responses to multiple different MHC molecules |
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| Title |
|---|
| SAMIRA R. AILI ET AL: "Diversity of peptide toxins from stinging ant venoms", TOXICON, vol. 92, 1 December 2014 (2014-12-01), US, pages 166 - 178, XP055421022, ISSN: 0041-0101, DOI: 10.1016/j.toxicon.2014.10.021 * |
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| AU2018207318A8 (en) | 2019-08-01 |
| JP2020504158A (ja) | 2020-02-06 |
| CA3049714A1 (fr) | 2018-07-19 |
| FR3061715A1 (fr) | 2018-07-13 |
| AU2018207318B2 (en) | 2022-02-10 |
| US11753452B2 (en) | 2023-09-12 |
| US12365709B2 (en) | 2025-07-22 |
| US20240101618A1 (en) | 2024-03-28 |
| WO2018130790A1 (fr) | 2018-07-19 |
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