WO1998050423A2 - Analogues peptidiques et leurs utilisations notamment dans des compositions pharmaceutiques et pour le diagnostic - Google Patents
Analogues peptidiques et leurs utilisations notamment dans des compositions pharmaceutiques et pour le diagnostic Download PDFInfo
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- WO1998050423A2 WO1998050423A2 PCT/FR1998/000923 FR9800923W WO9850423A2 WO 1998050423 A2 WO1998050423 A2 WO 1998050423A2 FR 9800923 W FR9800923 W FR 9800923W WO 9850423 A2 WO9850423 A2 WO 9850423A2
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/005—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from viruses
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- 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
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/12—Viral antigens
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/12—Viral antigens
- A61K39/145—Orthomyxoviridae, e.g. influenza virus
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- A—HUMAN NECESSITIES
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- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/46—Cellular immunotherapy
- A61K39/461—Cellular immunotherapy characterised by the cell type used
- A61K39/4611—T-cells, e.g. tumor infiltrating lymphocytes [TIL], lymphokine-activated killer cells [LAK] or regulatory T cells [Treg]
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- 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
- A61K39/46—Cellular immunotherapy
- A61K39/464—Cellular immunotherapy characterised by the antigen targeted or presented
- A61K39/4643—Vertebrate antigens
- A61K39/4644—Cancer antigens
-
- 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
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4748—Tumour specific antigens; Tumour rejection antigen precursors [TRAP], e.g. MAGE
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
- G01N33/56966—Animal cells
- G01N33/56977—HLA or MHC typing
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- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2760/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses negative-sense
- C12N2760/00011—Details
- C12N2760/16011—Orthomyxoviridae
- C12N2760/16022—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2760/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses negative-sense
- C12N2760/00011—Details
- C12N2760/16011—Orthomyxoviridae
- C12N2760/16034—Use of virus or viral component as vaccine, e.g. live-attenuated or inactivated virus, VLP, viral protein
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2500/00—Screening for compounds of potential therapeutic value
Definitions
- the present invention relates to peptide analogues and their uses, mainly in the field of the preparation of pharmaceutical compositions, in particular of vaccines, and for the in vitro or in vivo diagnosis of various pathologies.
- Pseudopeptides represent a class of molecules of particular interest in the design of enzyme inhibitors. Cleavage by peptidases is involved in a variety of biological processes since it makes it possible to generate active protein or peptide fragments from inactive precursors. The idea that an isosteric link could be considered as a mime of the tetrahedral intermediate formed during the transition through the transition state, opened the way for pseudopeptide-type inhibitors. In the early 1980s, this approach was successfully used in the development of potent inhibitors of the angiotensin converting enzyme (ACE) and renin (Szelke et al, 1982; Boger et al., 1983 ) and HIV aspartic protease (Huff, 1991). More recently, several pseudopeptide selective inhibitors of Ras farnesyl transferase have been proposed. These molecules are of potential therapeutic interest in the treatment of cancers involving the mutated Ras oncogene (Buss &
- Pseudopeptide analogues of peptide hormones have also been the subject of numerous studies with the primary objective of stabilizing the starting peptide and conserving activity. This strategy effectively allowed the discovery of powerful agonists (Chorev et al., 1979; Nagain et al., 1988;
- the modifications carried out so far on the peptides for immunological use are essentially limited to the addition of sugars, to that of more or less long fatty acids to allow the emulsion of the resulting lipopeptides, to the cyclization by formation of disulfide or covalent bridges, as well as the addition of molecules such as biotin, to increase, for example, the sensitivity of immunochemical tests in solid phase.
- pseudopeptides probably have very little or no immunogenicity, since they could not be transformed and presented to molecules of the major histocompatibility complex (MHC) to be recognized by helper T cells or by lymphocytes T cytotoxic.
- MHC major histocompatibility complex
- the authors of this international application who are also the authors of the present application, had indeed, for the first time, demonstrated that the modification by replacement of a peptide bond -CO-NH- of the peptide chain of a peptide, by a -NH-CO- bond, and, if necessary by replacement of an amino acid of configuration L by an amino acid of configuration D, makes it possible to obtain peptide analogues (retro or retro-inverso respectively) likely to be used in the treatment of pathologies involving the humoral or cellular mediated immune response.
- the abovementioned immunoretroids are compounds of the peptide type, namely compounds consisting of a chain of proteinogenic amino acids, at least one of the bonds -CO-NH-, and advantageously all the bonds
- -CO-NH- of the peptide chain of the corresponding parent peptide, (not comprising an -NH-CO- bond in its peptide chain), is (are) replaced by one or more link (s) - NH-CO-, the chirality of each aminoacyl residue, whether or not involved in one or more -NH-CO- bonds mentioned above, being either conserved (retro peptide) or reversed (retro-inverso peptide) compared to corresponding aminoacyl residues constituting said parent peptide.
- retro-inverso peptides any peptide and peptide analog corresponding to the definition given above of immunoretroids, said peptide more particularly consisting of a peptide chain in which at least one of the residues on the one hand is linked to at least one neighboring residue by a bond -NH-CO-, and on the other hand, is of opposite chirality to that of this same aminoacyl residue in the peptide chain of the parent peptide.
- retro peptide any peptide meeting the definition given above of immunoretroids, said peptide more particularly consisting of a peptide chain in which at least one of the residues is linked to at least one neighboring residue by an -NH-CO- bond, the chirality of all the aminoacyl residues involved in at least one -NH-CO- bond being preserved relative to the corresponding residue of the peptide chain of the parent peptide.
- proteinogenic amino acid is meant, in the above and what follows, any amino acid used in the constitution of a natural protein or peptide.
- non-proteinogenic amino acid means, as opposed to the preceding definition, any amino acid not forming part of a natural protein or peptide.
- non-proteinogenic amino acid is understood more particularly to mean any amino acid whose carbon carrying the side chain R, namely the group -CHR-, located between -CO- and -NH- in the natural peptide chain, is replaced by a motif which does not form part of a natural protein or peptide.
- the object of the present invention is to provide pharmaceutical compositions, and more particularly vaccines, comprising peptide analogues having a half-life clearly greater than that of natural peptides or natural proteins, or that of synthetic peptides whether or not derived from these.
- natural proteins these natural proteins, or peptides whether or not derived from the latter, being further designated in the following by the expression "parent proteins or peptides"
- parent proteins or peptides are analogues, while exhibiting biological activity, and more particularly immunological, comparable, or even superior, to that of the above-mentioned parent proteins or peptides, or else an activity different or opposite to that of said parent proteins or peptides.
- Another object of the present invention is to provide methods of in vivo diagnosis or of in vivo evaluation of the capacity of the immune response of an individual in the context of pathologies in which natural peptides or natural proteins (exogenous or endogenous) are likely to intervene by binding to MHC molecules, the peptide-MHC complexes thus obtained occur at receptors located on T cells and recognizing said natural peptides or natural proteins in their form complexed with said MHC molecules.
- the object of the invention is also to provide compositions and kits (or kits) for implementing the methods of diagnosis or in vivo evaluation of the immune response mentioned above.
- the present invention also aims to provide methods of in vitro diagnosis of pathologies associated with the presence in the body of an individual of endogenous or exogenous proteins, these methods being carried out using peptide analogues as defined above. above, or using antibodies directed against the complexes between these antibodies and the MHC molecules, and having the advantage of being more efficient than current diagnostic methods carried out using parent peptides or proteins, or using antibodies directed against the latter.
- the present invention also aims to provide new kits for the implementation of such in vitro diagnostic methods.
- the present invention relates to the use of peptide analogs of parent peptides, these parent peptides being optionally derived from exogenous or endogenous proteins, said parent peptides interacting with MHC molecules in the context of pathologies involving an immune response to cell mediation, in humans or animals, said analogs being characterized in that they correspond to said parent peptides in which: at least one peptide bond -CO-NH- of the peptide chain is modified, with the exception modifications of the retro type, or retro-inverso, or at least one amino acid of the peptide chain, is substituted by a non-proteinogenic amino acid, or - at least one peptide bond -CO-NH- of the peptide chain, is modified , and at least one amino acid of said peptide chain is substituted by a non-proteinogenic amino acid, for the preparation of a medicament intended for the prevention or the treatment of the above-menti
- the peptide analogues used in the context of the present invention correspond to said parent peptides in which at least one peptide bond -CO-NH- of the peptide chain, is modified, with the exception of modifications of the retro type, or retro-inverso.
- a peptide derived from a protein such as it exists in the natural state in the abovementioned organisms, in particular by fragmentation of said protein (in particular using appropriate proteases, then purification of the peptide in question), or by peptide synthesis (according to the methods conventionally used in this field)
- a peptide derived from a protein such as it exists in the natural state but whose immunological activity has been modified, conserved or optimized by replacement of certain amino acids of the natural sequence by proteinogenic amino acids, for example following a screening of a library of analogous peptides obtained by peptide synthesis.
- the subject of the invention is also the peptide analogues of parent peptides, these parent peptides being optionally derived from exogenous or endogenous proteins, said parent peptides being able to interact with MHC molecules in the context of pathologies in humans or animal, said analogs being characterized in that they correspond to said parent peptides in which: at least one peptide bond -CO-NH- of the peptide chain is modified, with the exception of modifications of the retro type, or retro-inverso, or - at least one amino acid of the peptide chain, is substituted by a non-proteinogenic amino acid, or at least one peptide bond -CO-NH- of the peptide chain, is modified, and at least one amino acid of the peptide chain , is substituted by a non-proteinogenic acid.
- the abovementioned peptide analogs of the invention are characterized in that the number of amino-acyl proteinogenic residues or not, and linked by a modified or unmodified bond, is between approximately 5 and approximately 20, preferably between 8 and 12 for the peptide analogues binding to MHC class I molecules, and preferably between 8 and 16 for peptide analogues binding to MHC class II molecules.
- a more particular subject of the invention is the peptide analogues as described above, characterized in that at least one of the peptide bonds -CO-NH- of the peptide chain of the parent peptide is replaced by a bond different from the -CO-NH- bond, said different bond being chosen in particular from the following:
- a subject of the invention is also the peptide analogues as described above, and characterized in that at least one of the peptide bonds -CO-NH- of the peptide chain of the parent peptide is replaced by a bond of the retro type or retro-inverso as defined above, in the case where at least one of the amino acids of said peptide analog is a non-proteinogenic amino acid.
- Preferred peptide analogues in the context of the present invention are characterized in that at least one of the peptide bonds -CO-NH- of the parent peptide chain or peptide is replaced by a methylene amino bond, or of the ⁇ -homologation type , or carba, or ketomethylene, or cyanomethylene amino, or hydroxyethylene amino.
- a more particular subject of the invention is the peptide analogues of parent peptides involved in melanoma, in particular the MARTI 27-35 peptide, said parent peptide comprising, where appropriate, one or more mutations, such as the MARTI 27- mutated parent peptide.
- Leu ⁇ 8 said peptide analogs corresponding to said parent peptides in which at least one of the peptide bonds -CO-NH- is modified, with the exception of modifications of the retro type, or retro-inverso.
- the invention relates more particularly to the peptide analogues of the parent peptide Mart-1 27-35 of melanoma, comprising a methylene amino bond and corresponding to the following formulas: PI sequences P2 P3 P4 P5 P6 P7 P8 P9
- a subject of the invention is also the peptide analogues of the parent peptide Mart-127-35 of melanoma, comprising a bond of the ⁇ -approval 0 type and corresponding to the following formulas:
- a subject of the invention is also the peptide analogues of the mutated parent peptide Mart-1 27-35 Leu-2, corresponding to the peptide Mart-1 27-35 in which the alanine in position 28 is replaced by leucine, and comprising a ⁇ -type binding between the same residues as in the case described above of the peptide analogs ⁇ 1 to ⁇ 9.
- a subject of the invention is also the peptide analogues of MARTI 27-35 of which at least one of the -CO-NH- bonds is replaced by a -CH2- CH2- bond, such as the following analogs 1 to 8 (also designated carba pseudopeptides analogous to M ART):
- a more particular subject of the invention is the peptide analogues of the parent peptides of the influenza virus, in particular of the parent peptide M58-66, said peptide analogs corresponding to said parent peptides in which at least one of the peptide bonds -CO-NH- is modified, with the exception of modifications of the retro type, or retro-inverso; advantageously, said analogs are chosen from those in which at least one of the -CO-NH- bonds is replaced by a -CH2-NH- bond, such as the following analogs:
- the subject of the invention is also the peptide analogs of parent peptides of the AIDS virus, in particular peptides NEF 84-92, and GAG 77-85, said peptide analogs corresponding to said parent peptides in which at least one of the peptide bonds - CO-NH- is modified, with the exception of modifications of the retro type, or retro-inverso, said analogs being chosen in particular from:
- NEF AVDLSHFLK NEFHEA1 A ⁇ (CHOH-NH) VDLSHFLK 98% 1046.50
- NEFHEA2 AV ⁇ (CHOH-NH) DLSHFLK 95% 1046.56
- NEFHEA3 AVD ⁇ (CHOH-NH) LSHFLK 83% + 15% 1029.00
- NEFHEA4 AVDL ⁇ (CHOH-NH) )
- SHFLK 98% 1047.97
- NEFHEA5 AVDLS ⁇ (CHOH-NH) HFLK 99% 1047.08
- Preferred peptide analogues in the context of the present invention are characterized in that at least one of the amino acids of the peptide chain of the parent peptide is substituted by a non-proteinogenic amino acid, as defined above.
- non-proteinogenic amino acids used are chosen from the following amino acids:
- R ⁇ , R2 and R3 represent independently of each other: a hydrogen atom, a hydroxyl, an alkyl radical of 1 to 25 carbon atoms, a radical containing an allyl group and having 3 to 25 carbon atoms , a radical containing one or more aromatic rings or not, in particular an aryl group, and having from 6 to 25 carbon atoms, and in particular the following groups: -CH3
- one of the two groups R2 and R 3 may represent a side chain of natural amino acids when either Ri or the other of the two groups R2 and R 3 do not represent a hydrogen atom,
- R, R2, Cet and N form a heterocycle of 4 to 8 carbon atoms, aromatic or not, optionally substituted, in particular a heterocycle of formula:
- R ⁇ , R2 and R independently of each other, represent a side chain of a natural amino acid, or are as defined above, in particular:
- R ⁇ , R 2 , R 3 and R4 independently of one another represent a side chain of a natural amino acid, or R ⁇ , R and R 3 , are such that defined above, and R4 has the same meaning as that given above for Ri.
- R and R in particular the statin derivatives of formula:
- non-proteinogenic amino acids used in the context of the present invention are chosen from;
- a more particular subject of the invention is the peptide analogues of the parent peptides of the influenza virus, in particular of the parent peptide M58-66, said peptide analogs corresponding to said parent peptides in which at least one of the amino acids of the peptide chain, is substituted by a non-proteinogenic amino acid, such as the following analogs:
- the abovementioned peptide analogues of the invention are selected from those capable of: on the one hand being recognized by the MHC molecules and of associating with the latter, in particular by implementing the following method:
- J .1 labeled in particular by coupling to a radioactive, enzymatic or fluorescent marker, said labeled antibody specifically recognizing either the MHC molecules in their conformation dependent on their binding to the peptide analog, or a molecule which itself binds specifically to molecules of MHC in their abovementioned conformation, in particular ⁇ 2-microglobulin specifically recognizing MHC class I molecules,
- the peptide analogues of the invention must be recognized by the MHC molecules and be associated with the latter, in particular in the context of the implementation of the recognition test described above. This association can be weak (detectable at concentrations of peptide analogs of the order of 10 ⁇ 4 to 10 " 5 M), intermediate (detectable at concentrations of peptide analogs of the order of 10 " ⁇ to 10 " ⁇ M ), or strong (detectable at concentrations of peptide analogues of the order of 10 ⁇ 8 to 10 ⁇ 9 M).
- the peptide analogs recognized by the MHC molecules in the context of the present invention are preferably capable of binding for at least about 30 minutes to said MHC molecules.
- a more particular subject of the invention is the peptide analogues as described above and characterized in that they are selected from those capable of: inducing in vitro the appearance and the growth of cytotoxic T lymphocytes from human cells or animal, in particular from mononuclear cells derived from peripheral blood (PBMC), in the presence of factors necessary for the growth and differentiation of cytotoxic T cells, to induce in vitro cytolysis by cytotoxic T lymphocytes, of target cells having on their surface the peptide analog associated with MHC molecules, said cytotoxic T lymphocytes being advantageously taken from a patient suffering from a pathology in which the parent peptide of the peptide analog studied is involved, and to induce in vitro the secretion of cytokines (or interleukins) by the aforementioned cytotoxic T lymphocytes, in particular IL-2, IL-4 or interferon y - said peptide analogs thus selected being:. either receptor agonists (TCR) recognizing the antigen
- cytotoxic T cells cytotoxic T cells, and are derived from parent peptides which behave themselves as agonists or antagonists of said receptors,
- partial agonists of said receptors and derived from parent peptides behaving themselves like agonists of said receptors, these partial agonists inducing in particular the secretion of one or more cytokines different from those whose secretion is induced by the parent peptides.
- a more particular subject of the invention is the peptide analogues as described above and characterized in that they are selected from those: capable of inducing in vitro the appearance and growth of cytotoxic T lymphocytes from human cells or animal, in particular from mononuclear cells from peripheral blood (PBMC), in the presence of factors necessary for the growth and differentiation of cytotoxic T cells, not inducing cytolysis by cytotoxic T lymphocytes, of target cells having on their surface the peptide analog associated with MHC molecules, said cytotoxic T lymphocytes being advantageously taken from a patient suffering from a pathology in which the parent peptide of the peptide analog studied is involved, not inducing in vitro the secretion of cytokines (or interleukins) by the aforementioned cytotoxic T lymphocytes, in particular IL-2, IL- 4 or the interferon ⁇ , said peptide analogs thus selected being antagonists of the cytotoxic T cell receptors.
- PBMC peripheral blood
- a subject of the invention is also the use of peptide analogues as defined above for the preparation of medicaments, in particular vaccines, intended for the prevention or the treatment of pathologies in which the parent peptides are agonists or antagonists of receptors recognizing the antigen of cytotoxic T cells, and more particularly of infectious neurodegenerative pathologies (of viral or bacterial origin), tumors, autoimmune and allergic.
- the parent peptides are agonists or antagonists of receptors recognizing the antigen of cytotoxic T cells, and more particularly of infectious neurodegenerative pathologies (of viral or bacterial origin), tumors, autoimmune and allergic.
- melanoma in particular using the peptide analogues of the MARTI 27-35 peptide described above.
- herpes caused by the herpes simplex virus 6, - infections caused by human parvovirus B19, for example infectious gastroenteritis,
- Table A Main autoimmune diseases (from top to bottom, from organ-specific autoimmune diseases to non-organ-specific autoimmune diseases).
- the subject of the invention is also any pharmaceutical composition, characterized in that it comprises, as active principle, at least one peptide analog (agonist, if necessary partial, or antagonist) as defined above, in association with a pharmaceutically acceptable vehicle.
- the pharmaceutical compositions according to the invention are in a form which can be administered orally, or parenterally, in particular at a rate of approximately 500 ⁇ g to 5 mg per dose, in particular at a rate of 3 doses per day.
- the subject of the invention is more particularly the pharmaceutical compositions as described above, containing as active principle at least one antagonist according to the invention, and their use in the context of the treatment of autoimmune diseases.
- a more particular subject of the invention is also the pharmaceutical compositions as described above, containing as active principle at least one partial agonist according to the invention, and their use in the context of the treatment of allergic diseases.
- the subject of the invention is also any vaccine, characterized in that it comprises, as active principle, at least one peptide analogue, preferably an agonist, optionally partial, as defined above, in combination with a vehicle pharmaceutically acceptable.
- the vaccines according to the invention are in a form which can be administered orally, or parenterally, in particular at the rate of approximately 500 ⁇ g to 5 mg per dose, in particular at the rate of 3 doses per day.
- the subject of the invention is also any composition intended for the in vivo diagnosis of the abovementioned pathologies involving the cell-mediated immune response, in particular cytotoxic T lymphocytes, or for the in vivo evaluation of the immune response in the context of said pathologies, by implementation of a hypersensitivity skin reaction by intradermal injection of said diagnostic composition, characterized in that it comprises at least one peptide analogue, preferably an agonist, optionally partial, as defined above, in combination with a biologically acceptable vehicle.
- a subject of the invention is also the use of peptide analogues as described above for the preparation of said compositions intended for the in vivo diagnosis of the abovementioned pathologies.
- the invention also relates to the complexes between a peptide analog as defined above, and a molecule of the major histocompatibility complex.
- the immune response involves the recognition of an endogenous or exogenous antigen by specialized cells.
- the antigen must initially be adequately presented by antigen presenting cells (APC).
- APC antigen presenting cells
- B lymphocytes recognize epitopes carried by intact unmodified antigens
- the presentation of the antigen to T lymphocytes is more complex since the antigen is first internalized by the presenting cell, proteolysed, then possibly re-expressed on its surface in the form of peptide fragments in association with the proteins of the major histocompatibility complex (MHC).
- MHC major histocompatibility complex
- the T lymphocyte which does not recognize the native antigen, recognizes a peptide fragment associated with a MHC molecule.
- MHC molecules essentially belong to two classes: I and IL Class I molecules are transmembrane glycoproteins consisting of a heavy polymorphic ⁇ chain associated in a non-covalent manner with a non-glycosylated light chain ⁇ 2m. Their crystallographic structure has been resolved (Bjorkman et al. (1987), Nature, 329: 506-512), and shows the presence of a groove forming the peptide presentation site, the bottom of which is composed of eight ⁇ sheets and the edges of two ⁇ propellers. These molecules are presented on the surface of almost all cells.
- Class II molecules are also membrane glycoproteins made up of two polymorphic chains ⁇ and ⁇ linked non-covalently to form, as shown by the recently elucidated crystallographic structure (Brown et al. (1993), Nature, 364: 33-39 ), a pleated ⁇ platform supporting two ⁇ helices. The groove formed is the site of presentation of the peptide. These molecules are only expressed on the surface of certain cells, including macrophages and B cells.
- Cytotoxic T lymphocytes (cells with CD8 markers) recognize proteolytic fragments of viral proteins associated with MHC class I molecules and cause the lysis of cells with the antigen.
- Helper T lymphocytes (cells carrying CD4 markers) recognize fragments of exogenous proteins captured by endocytosis presented in association with MHC class II molecules and induce cellular stimulation of the immune response.
- the subject of the invention is also the complexes between a peptide analog according to the invention, and a T cell receptor (also called T-peptide analog receptor complexes).
- the invention also relates to the complexes between a molecule of the major histocompatibility complex, a peptide analog as defined above, and a T cell receptor (also designated ternary complex MHC-peptide analog-T receptor).
- a subject of the invention is also the use of peptide analogues as defined above, for the implementation of a method of in vitro diagnosis of the pathologies mentioned above.
- the subject of the invention is more particularly any method of in vitro diagnosis of pathologies involving the cell-mediated immune response, in particular cytotoxic T lymphocytes, namely pathologies associated with the presence in the organism of a patient, exogenous or endogenous peptides which can interact with MHC molecules, and which can be directly
- ELIS A Enzyme Linked Immuno Sorbent Assay
- kits or kits for implementing in vitro diagnostic methods as described above comprising:
- the subject of the invention is also the antibodies directed against the MHC-peptide analog binary complexes as defined above, said antibodies being as obtained by immunization of an animal with at least one of the above-mentioned complexes, said antibodies being susceptible to form a complex with these binary complexes.
- the antibodies according to the invention are polyclonal or monoclonal antibodies.
- the aforementioned polyclonal antibodies are obtained by immunization of an animal with at least one MHC-peptide analog complex according to the invention, followed by the recovery of the desired antibodies in purified form, by sampling the serum of said animal, and separation of said antibodies from the others constituents of the serum, in particular by affinity chromatography on a column to which is fixed an antigen specifically recognized by the antibodies, in particular a MHC-peptide analog complex according to the invention.
- the monoclonal antibodies according to the invention can be obtained by the hybridoma technique, the general principle of which is recalled below.
- an animal generally a mouse
- a MHC-peptide analog complex according to the invention, the B lymphocytes of which are then capable of producing antibodies against said complex.
- These antibody-producing lymphocytes are then fused with "immortal" (especially murine) myeloma cells to give rise to hybridomas. From the heterogeneous mixture of cells thus obtained, a selection is then made of cells capable of producing a particular antibody and of multiplying indefinitely.
- Each hybridoma is multiplied in the form of a clone, each leading to the production of a monoclonal antibody whose recognition properties with respect to the MHC-peptide analog complex of the invention can be tested for example by ELISA, by immunoblotting in one or two dimensions, in immunofluorescence, or using a biosensor.
- the monoclonal antibodies thus selected are subsequently purified in particular according to the affinity chromatography technique described above.
- the antibodies according to the invention are more particularly characterized in that they are capable of forming a complex with MHC-peptide analog complexes, and / or with MHC-peptide complexes or parent proteins corresponding to said peptide analogs.
- the anti-MHC-peptide analogues antibodies of the invention recognize the MHC-peptide complexes or parent proteins mentioned above with an affinity at least equal to that presented by the anti-MHC-peptide complexes or parent proteins vis-à-vis MHC-peptide complexes or parent proteins.
- the affinity mentioned above can be measured by the equilibrium affinity constant Ka of the complexes involving one of the above antibodies with one of the above complexes.
- the subject of the invention is also any pharmaceutical composition, characterized in that it comprises antibodies as defined above, in association with a physiologically acceptable vehicle, as well as their use in the context of the treatment of the abovementioned pathologies.
- the invention also relates to the method for screening for peptide analogues as defined above, characterized in that it comprises the following steps:
- MHC in their abovementioned conformation, in particular ⁇ 2-microglobulin specifically recognizing MHC class I molecules,
- the subject of the invention is also any kit or kit for the implementation of a method for screening for peptide analogues as defined above, comprising: - MHC molecules, and / or
- - antibodies specifically recognizing MHC molecules in their conformation dependent on their binding to said peptide analog, advantageously fixed on a solid support, or supplied with the reagents necessary for their fixing on the solid support, and / or - labeled antibodies, in particular by coupling to a radioactive, enzymatic or fluorescent marker, specifically recognizing either the MHC molecules in their conformation dependent on their binding to the peptide analog, or a molecule which itself binds specifically to the MHC molecules in their abovementioned conformation, in particular ⁇ 2-microglobulin specifically recognizing MHC class I molecules, and / or
- the method of synthesis in the liquid phase consists in successively condensing the aminoacyles two by two in the required order or in condensing aminoacyles and fragments previously formed and already containing several aminoacyles in the appropriate order, or alternatively several fragments previously thus prepared, it being understood that care will have been taken beforehand to protect all the reactive functions carried by these aminoacyls or fragments, with the exception of the amino functions of the one and carboxyls of the other or vice versa, which should normally be involved in the formation of peptide bonds, in particular after activation of the carboxyl function, according to methods well known in the synthesis of peptides.
- protective groups of urethane type (Boc, Fmoc benzyloxycarbonyl or allyloxycarbonyl) to protect the N-terminal ends of amino acids and groups of ester type (methyl, ethyl, benzyl, tert-butyl, allyl or even benzhydrilglycolamide). ) to protect the C-terminal ends of amino acids.
- Such a synthesis can be carried out by first condensing the aminoacyl residue AA1 whose COOH function is protected with the aminoacyl residue AA2 whose NH 2 function is protected. The amino function of the AA2 residue in the AA2-AA1 fragment thus obtained is then deprotected, in order to subsequently condense said fragment with the aminoacyl residue AA3, the amino function of which is protected. The preceding steps are repeated as many times as there are aminoacyl residues to be introduced into the chain of retro analogs to be synthesized. According to another preferred technique of the invention, use is made of that described by RD Merrifield in the article entitled “Solid phase peptide synthesis" (J. Am. Chem. Soc. (1963), 85, 2149-2154).
- a very porous polymer resin on which the first C-terminal amino acid (in this case AA1-OH) of the chain is fixed.
- This amino acid is attached to the resin via its carboxylic group and its amino function is protected, for example by the t-butyloxycarbonyl group.
- the protective group of the amino function is removed by washing the resin with an acid.
- the protective groups of the various amino acids constituting the peptide chain are removed and the peptide is detached from the resin, for example using hydrofluoric acid.
- One or more of the synthesis steps described above can be interrupted in order to insert a bond different from the -CO-NH- bond between certain aminoacyl residues, and / or one or more non-proteinogenic amino acids.
- Diagram 1 Schematic representation of the peptide and reduced bonds.
- the reduced bond or methylene amino has the particularity of being more flexible than the peptide bond due to a free rotation of the carbon-carbon bond (diagram 1).
- the introduction of a reduced bond can locally modify the orientation of the side chains of amino acids.
- the reduced bond can exist in its protonated form at physiological pH.
- the modifications brought about by the presence of a reduced bond namely the modification of the structure and the modification of the hydrophilic character of the parent peptide, can have implications in the phenomena of fixation and recognition of the antigen.
- each reduced peptide was carried out in solid phase and in conventional Fmoc chemistry.
- the reduced bond is obtained by condensation of an N-protected ⁇ -amino aldehyde with the ⁇ -amino acid immobilized on the resin.
- the imine formed is reduced in situ by sodium cyanoborohydride to lead to reduced binding according to the method described by Sasaki and Coy in 1987 (diagram 2).
- Diagram 3 Synthesis of the N-protected ⁇ -amino aldehydes by the method of Fehrentz and Castro.
- PG Fmoc protective group.
- the following amino acids of the reduced peptide sequence are coupled in a conventional manner.
- the reduced peptide is deprotected and detached from the resin by trifluoroacetic acid (TFA).
- TFA trifluoroacetic acid
- Each reduced peptide is purified by high pressure liquid chromatography with reverse phase polarity (RP-HPLC).
- the mass of each peptide is controlled by laser desorption assisted by a matrix (MALDI) using the Bruker Protein TOF spectrometer.
- MALDI matrix
- the ⁇ analogs are obtained by coupling ⁇ -homo amino acids in place of natural amino acids.
- Diagram 4 Schematic representation of an amino acid and a ⁇ -homo amino acid
- the ⁇ -homo amino acid is an amino acid in which a methylene group has been inserted between the ⁇ carbon and the carboxyl.
- the configuration of C ⁇ is unchanged (diagram 4).
- the incorporation of a ⁇ -homo amino acid in place of an amino acid in a peptide sequence has the effect of lengthening the peptide chain of the resulting peptide analogs. These longer peptide analogs can be twisted, braced to enter the binding pocket of the MHC class I molecule. In this case, some side chains can be moved laterally or their orientation changed, which can lead to preferential interactions with the MHC class I molecule and / or TCR.
- the ⁇ -homo amino acids are obtained by chemical synthesis in several stages from the corresponding N-protected amino acids according to the following diagram (Diagram 5).
- the amino acid protected on its amino function by the Boc group is first activated by the mixed anhydride method.
- the activated amino acid reacts with diazomethane to lead to diazomethylketone 2.
- Wolff rearrangement of this diazomethylketone in methanol, in the presence of silver benzoate and triethylamine gives the ⁇ -homo methyl ester of the amino acid protected by the Boc group.
- a saponification leads to compound 3.
- the deprotection of the Boc, followed by the reprotection of the amino function by the Fmoc group are the last steps for obtaining the ⁇ -homo amino acid, protected by the Fmoc.
- Compound 4 is introduced by conventional amino acid coupling methods during solid phase synthesis using the Fmoc strategy.
- Diagram 6 Schematic representation of the peptide and carba bonds
- the carba bond confers a certain flexibility on the pseudopeptide and this due to free rotations around the carbon-carbon bonds. These free rotations can cause changes in the orientation of the side chains (carried by the carbons C ⁇ and C ⁇ + 1, see diagram 6) of the two amino acids located on either side of the carba bond. These modifications in the orientation of the side chains can have numerous implications in the phenomena of fixation, recognition and induction of signals different from those generated with the parent peptide.
- the synthon Fmoc-Ile ⁇ (CH 2 CH2) Gly-OH (4 in Figure 7) is necessary for the synthesis of the analogue [Ile 30 ⁇ (CH 2 CH2) Gly 3 1 ] Mart-1 27-35. This synthon is obtained by chemical synthesis in several stages (diagram 7).
- Boc- ⁇ -homoIle-OH (1) dimethylhydroxamate (for the synthesis of ⁇ -homo amino acids, see previous paragraph) is reduced by lithium aluminum hydride at low temperature (-25 ° C) in tetrahydrofuran in order to obtain the corresponding aldehyde (2).
- the hydrogenation of the double bond, the saponification of the ester, deprotection and reprotection of the amino function by the Fmoc group make it possible to obtain the Fmoc-Ile ⁇ (CH 2 CH 2 ) Gly-OH (4).
- Diagram 7 Synthesis diagram of Fmoc-Ile 30 ⁇ (CH CH 2 ) Gly 1-OH (4)
- This synthon (4) is incorporated in the solid phase in Fmoc chemistry.
- the coupling of 5 equivalents of the mixture (synthon / BOP / HOBt) is carried out 2 times in succession (20 min each) in the DMF.
- the Fmoc group is deprotected by piperidine at 50% in DMF.
- the following amino acids are coupled with classic way.
- the peptide is deprotected and detached from the resin in TFA, precipitated in ether and purified by RP-HPLC.
- the pseudopeptide 1 carba Mart-1 27-35 is obtained with a purity of 90%.
- the pseudopeptide 2 carba Mart-1 27-35 is obtained with a purity of 98%.
- TFA is 13.07 (3a), 13.54 (3b) min.
- Analysis of the mass of the pseudopeptide by MALDI using the Bruker Protein TOF spectrometer gives the expected mass M + H + 799.13.
- the pseudopeptide 4 carba Mart-1 27-35 is obtained with a purity of 100%. Its retention time in the gradient from 5 to 65% of B (with as eluent:
- Tetrahydroisoquinolene-3-carboxylic acid is a constrained analogue of
- Phenylalanine It was introduced at position 62 in the sequence of the influenza matrix peptide in place of the natural phenylalanine in order to study the importance of the orientation of the phenyl group in the interaction with the molecule.
- the synthesis of the analogous peptide was carried out in conventional Fmoc chemistry.
- the Fmoc-L-Tic-OH derivative (sold by the company Néosystem) was introduced into the growing chain using a conventional coupling process (BOP / HOBt / Fmoc-L-Tic-OH) in excess of 5 during 20 min in DMF.
- the deprotection of the Fmoc group was carried out in several stages in 50% piperidine in DMF (4 treatments of 30 min each separated by 3 washes of the resin in DMF).
- the assembly of the following amino acids posed no particular problems.
- the mass measured using the Bruker Protein TOF spectrometer was the expected mass M + H + 978.9.
- analogs 3-Pya62 and 3-Pya64 of M58-66 were obtained by introducing the amino acid of formula in place of phenylalanine in positions 62 and 64 respectively;
- analogues D-Phe62 and D-Phe64 of M58-66 were obtained by introducing D-phenylalanine in place of phenylalanine in positions 62 and 64 respectively;
- the mutant cell used is the human T2 cell (DeMars et al., 1985; Ljunggren & Kàrre, 1985; Salter & Cresswell, 1986) which is a variant of the Tl line produced by fusion of CEM T lymphoma and B lymphoma 721.174 .
- This cell which is devoid of peptide transporters contains heavy chains of class I molecules free of peptides which will be able to accept exogenous peptides.
- the peptides tested are used at concentrations varying from 100 ⁇ M to 0.1 nM.
- the lysis is carried out in the presence of the peptides to be tested for 30 min or 1 h at 37 ° C.
- the supernatant is added with 140 ⁇ l of PBS containing 0.05% Tween 20, 3 mM sodium azide, 1 mM PMSF and 10 mg / ml bovine albumin.
- PBS containing 0.05% Tween 20, 3 mM sodium azide, 1 mM PMSF and 10 mg / ml bovine albumin.
- Each sample is incubated for 20 h at 4 ° C in 2 wells of a microtiter plate of the Nunc, Maxisorb type, previously coated with a monoclonal antibody (Parham & Brodsky, 1981) (10 ⁇ g / ml in PBS) which recognizes histocompatibility molecules having a conforming conformation (s) for the presentation of the peptides and similar to that (s) present on the surface of the cells.
- the plate covered with antibodies is previously saturated with bovine albumin at 10 mg / ml in PBS-Tween before placing the sample.
- the second antibody which allows the detection of the assembly of histocompatibility molecules is directed against beta2m. It is coupled either to biotin (NHS-LC biotin, Pierce) or to alkaline phosphatase (P-5521, Sigma) and is incubated at 2 ⁇ g / ml for 1 h at 37 ° C. In the case of the use of biotin, an incubation of 45 min at 20-25 ° C with extravidine coupled with alkaline phosphatase (E-2636, Sigma) is carried out.
- the alkaline phosphatase activity is measured using as substrate 4-methyl-umbelliferyl phosphate (M-8883, Sigma) at 100 ⁇ M in 50 mM diethanolamine, pH 9.5 with 1 mM MgCl2. The reading is made at 340/460 nm using a 2300, Millipore cytofluorimeter.
- the material used is either purified HLA or the lysate of the T2 cell. With the purified HLA it is necessary to eliminate the endogenous peptides as described in paragraph 1-1 and to bring it into the presence of the peptide to be tested in an Eppendorf tube at
- This device measures the molecular interactions occurring in real time in a continuous buffer flow using a beam of reflected light.
- the anti-HLA antibodies are diluted to 25 ⁇ g / ml in Na acetate buffer pH 7.4 and covalently fixed by their free amines on the carboxymethylated dextran matrix of the "Sensor Chip CM5" activated with 50 mM NHS and
- PBMC peripheral blood
- PBMC peripheral blood
- TT tetanus toxin
- T CD4 + and the peptide to be tested as a CTL inducer at 1 ⁇ g / ml.
- IL-7 is added at 50 U / ml.
- 10 replicates are treated independently.
- the effector cells generated are restimulated by PBMCs preincubated with the peptide (50 ⁇ g / ml for 4 h for 10 ⁇ 10 ° " cells) then irradiated at 6000 rads.
- the stimulator cells are diluted to 106 / ml and 1 ml is added per well.
- the induced T lines are tested on their capacity to recognize the inducing peptide presented on the HLA on the surface of target cells, which are most frequently EBV lymphoblastoid cells.
- the resulting cytolysis is determined by the standard test of 4 h of release of 51cr. On Day -3 or -4 before the test, the addition of interleukins is not done because the cells must be weaned to be in optimal activation condition. For primary induction, lysis cannot be detected before 3 weeks.
- Target cells labeled for 1 h with 10 ⁇ Ci of 51cr are preincubated with the peptide
- PBMCs or purified CD8 + cells (1 to 2 x 10 ° " ) are cultured in 24-well plates and stimulated with either anti-CD3 + monoclonal antibodies in the presence of 100 nM Phorbol Myristate Acetate (PMA) with autologous PBMCs irradiated and sensitized or not for 1 h 30 with a peptide whose recognition is restricted by MHC molecules.
- PMA Phorbol Myristate Acetate
- RNAzol technique Bioprobe, Montreuil, France
- the RNA (1 to 2 mg) is retrotranscribed with superscript II (Gibco BRL).
- the cDNAs synthesized are diluted 1/5 with water and their concentration quantified by competitive PCR with a plasmid (pQB.2) containing the B actin sequence (237 bp product felicitly provided by D. Shire).
- the PCR reaction is carried out in the presence of 10 mM of Tris-HCl, 50 mM of KC1, 1.5 mM of MgC12, 0.2 mM of each dNTP (dATP, dCTP, dGTP, dTTP), 0.4 mM of sensible and antisense primer, 2 U of Taq polymerase (Promega).
- Amplification is carried out by starting with denaturation at 94 ° C, 5 min, then with 30 cycles at 94 ° C, 30 s, 55 ° C, 30 s, 72 ° C, 30 s, and a last elongation at 72 ° C, 10 min, in a regulated thermostat (Perkin Elmers 9600).
- the analysis of IL-2, IL-4 and IFN-g is done in the same conditions as for B-actin, except the number of cycles which varies between 30 and 40.
- the relative quantification is carried out by competitive PCR.
- the peptides were incubated at different concentrations at 4 ° C. for 18 h in the presence of denatured HLA-A2 molecules and of ⁇ 2 microglobulin.
- the stable HLA-A2 / peptide complexes formed at 4 ° C. are captured with Ac BB7.2 adsorbed on a plate and revealed by a second anti ⁇ 2 microglobulin Ab coupled to alkaline phosphatase.
- the amount of complexes formed HLA-A2 / peptide is
- NP 383-391 is a negative control peptide. 0. peptide corresponds to the background noise in the absence of peptide. U.F. : arbitrary unit of fluorescence.
- the T2 A2 target cells were chromated (Cr51), then incubated for
- Phg-62 and 64, DPhe-62 and 64, Cha62 and 64, Tic 62 and 64 affect the recognition of cytolytic T lymphocytes specific for the peptide M58-66.
- FIG. 3 Figures 3 A and 3B.
- the T2 A2 target cells were chromated (Cr51), then incubated for 1 h with different concentrations of peptide. After washing, the targets (5000 per well) were incubated for 4 h with the CTL line at a 10E / 1C ratio. The specific lysis is expressed in% of lysis as a function of the concentration of peptide incubated with the targets.
- the cytolytic T lymphocytes specific for the peptide M58-66 have a lower affinity for the modified peptides.
- the different peptides are compared for their ability to bind to the purified HLA-A2J molecule.
- NP is a peptide of the nucleoprotein of the influenza virus which does not bind to the HLA-A2 molecule (negative control).
- the other homo ⁇ peptides have an intermediate to low affinity compared to the Mart-1 peptide.
- T2 A2 target cells were chromated (Cr51), then incubated for 2 h with 1 ⁇ g / ml of peptide. After washing, the targets (1500 per well) were incubated for 4 h with the different T clones (LT8, LT11, LT12) at a ratio
- the T2 target cells incubated with the parent peptide Mart-1 are lysed at 90% by the three cytolytic clones (LT8, LT11 and LT12) specific for this peptide. In the absence of peptide (0), no lysis is detected. Only the homo ⁇ 4 peptide is capable of inducing a lysis activity similar to the parent peptide for a single clone (LT12). 2.3. Answer dose.
- the T2 A2 target cells were chromated (Cr51), then incubated for
- the targets (1500 per well) were incubated for 4 h with the clone T LT12 at a 3E / 1C ratio.
- the specific lysis is expressed in% of lysis as a function of the concentration of peptide incubated with the targets.
- Clone T LT12 has a lower affinity for the ⁇ 4 peptide than vis-à-vis the Mart-1 peptide.
- HLA-A2 / peptide were incubated at two different concentrations (10 "4 M and 10 -6 M) at 4 ° C 18 h in the presence of HLA-A2 denatured and ⁇ 2 microglobulin.
- the stable HLA-A2 / peptide formed 4 ° C are captured with Ac BB7.2 (specific for this class I molecule and adsorbed at the bottom of the wells) and revealed by a second anti ⁇ 2 microglobulin Ab coupled to alkaline phosphatase.
- the amount of complexes formed HLA-A2 / peptide is proportional to the intensity of fluorescence detected at the cytofluor (UF: arbitrary unit of fluorescence).
- the v ⁇ peptides 1-2 to 4-5 have an intermediate to low affinity compared to the Mart-1 peptide.
- the peptides v ⁇ 4-5 to 8-9 bind very weakly to the purified A2J molecule.
- Lysis test T2 A2 target cells were chromated (Cr51), then incubated for
- the targets (1500 per well) were incubated for 4 h with the different T clones (LT8, LT11, LT12) at a ratio
- T2 A2 target cells were chromated (Cr51), then incubated for
- the targets (1500 per well) were incubated for 4 h with the different T clones (LT8, LT12) at a 3E / 1C ratio.
- the specific lysis is expressed in% of lysis as a function of the concentration of peptide incubated with the targets.
- the peptides v ⁇ 2-3 and v ⁇ 5-6 have a dose response comparable to that of the parent peptide whereas the peptide ⁇ 7-8 induces lysis only weakly even at high concentration of peptide. This result suggests that the modification introduced decreases the affinity of the TCR (T receptor) of the clone LT8 for this peptide.
- Figure 10 Figure 10 ( Figures 10A and 10B).
- the peptides were incubated at various concentrations at 4 ° C. for 18 h in the presence of denatured HLA-A2 molecules and of ⁇ 2 microglobulin.
- the stable HLA-A2 / peptide complexes formed at 4 ° C are captured with BB7.2 Ab adsorbed on a plate and revealed by a second anti ⁇ 2 microglobulin Ab coupled to alkaline phosphatase.
- the amount of complexes formed HLA-A2 / peptide is proportional to the intensity of fluorescence detected with cyto fluorine.
- U.F. arbitrary unit of fluorescence.
- the reduction-modified Mart-1 peptides have an intermediate affinity for the HLA-A2 molecule.
- the reduction in positions 2-3 and 8-9 makes the link undetectable for the clone studied.
- 4.2. Ability of reduced series peptides M58-66 to induce lysis of T2 target cells by a CTL line induced by M58-66 and restricted by the HLA-A2 molecule.
- FIG. 1B Study of the binding of peptide analogues [3-Pya64] M58-66 (3-Pya64), [2-Tha64] M58-66 (2-Tha64), [D-Phe64] M58-66 (D-Phe64 ), [Cha62] M58-66 (Cha62), [N-MePhe62] M58-66 (N-MePhe62),.
- FIG. 1C binding of the peptide analogues [pCl-Ph62] M58-66 (pCl-Phe62), [Phg62] M58-66 (Phg62), [Cha64] M58-66 (Cha64),
- T2 by a cytotoxic T cell line specific for M58-66 the percentage of lysis is indicated on the ordinate and the E / T ratio (effector cells / target cells) is represented on the abscissa:
- FIG. 2A Effect of the analogs Tic62 and Tic64 on the lysis of T2 cells
- FIG. 2B effect of analogues D-Phe62, D-Phe64, Cha62, Cha64 on the lysis of T2 cells
- FIG. 2C effect of the analogues 3-Pya62, 3-Pya64, 2-Tha62, 2-Tha64 on the lysis of T2 cells
- Figure 2D Effect of analogs pCl-Phe64, Phg64, pCl-Phe62, Phg62 on the lysis of T2 cells, in comparison with the effects of peptide M58-66, and of a solution containing no peptide (0 peptide).
- FIG. 3A study as a function of the concentration of pCl-Phe62 and pCl-Phe64,
- Figure 7 A study of the binding of peptides ⁇ (l-2) Mart-l (represented by 1-2), ⁇ (2-3) Mart-l (2-3), ⁇ (3-4) Mart- l (3-4), ⁇ (4-5) Mart-l (4-5), .
- Figure 7B study of the binding of peptides ⁇ (5-6) Mart-l (5-6), ⁇ (6-7) Mart-l (6-7), ⁇ (7-8) Mart-l (7 -8), ⁇ (8-9) Mart-l (8-9), in comparison with Mart-1.
- Mart-1 the percentage of lysis is indicated on the ordinate, and the peptide analogs 1-2 to 8-9 are indicated on the abscissa, in comparison with Mart-1 and a solution without peptide (0).
- Figure 9A study as a function of the concentration of analogs 2-3 and 7-8
- Figure 9B Study as a function of the concentration of analog 5-6, in comparison with the concentration of Mart-1.
- - Figure 10 study of the binding to MHC molecules (HLA-A2) of peptide analogues of peptide M58-66 comprising a -CH 2 -NH- bond (reduced analogs): the concentrations of peptides (10 " ⁇ to 10 " ⁇ M) are indicated on the abscissa, and the fluorescence units are indicated on the ordinate:.
- Figure 10A study of the binding of T (l-2) peptides M58-66 (1-2), ⁇ (2-3) M58-66 (2-3), ⁇ (3-4) M58-66 (3 -4), ⁇ (4-5) M58-66 (4-5),
- FIG. 10B study of the binding of F (5-6) peptides M58-66 (5-6), ⁇ (6-7) M58-66 (6-7), ⁇ (7-8) M58-66 (7 -8), ⁇ (8-9) M58-66 (8-9), in comparison with M58-66, and a mutated peptide (GIL) of M58-66 carrying the mutation GLL ⁇ GIL [M58-66 (GIL) ],
- - Figure 11 study of the effect of the reduced analogs 1-2 to 8-9 of M58-66 on the lysis of T2 cells by a T cell clone specific of M58-66: the percentage of lysis is indicated in ordered, and the ratio effector cells / target cells (E / T) is indicated on the abscissa, in comparison with M58-66, mutated M58-66 (GLL) and a solution without peptide (0).
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002289110A CA2289110A1 (fr) | 1997-05-07 | 1998-05-07 | Analogues peptidiques et leurs utilisations notamment dans des compositions pharmaceutiques et pour le diagnostic |
EP98924401A EP0984985A2 (fr) | 1997-05-07 | 1998-05-07 | Analogues peptidiques et leurs utilisations notamment dans des compositions pharmaceutiques et pour le diagnostic |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR97/05677 | 1997-05-07 | ||
FR9705677A FR2763071B1 (fr) | 1997-05-07 | 1997-05-07 | Analogues peptidiques, et leurs utilisations notamment dans des compositions pharmaceutiques et pour le diagnostic |
Publications (2)
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WO1998050423A2 true WO1998050423A2 (fr) | 1998-11-12 |
WO1998050423A3 WO1998050423A3 (fr) | 1999-08-19 |
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PCT/FR1998/000923 WO1998050423A2 (fr) | 1997-05-07 | 1998-05-07 | Analogues peptidiques et leurs utilisations notamment dans des compositions pharmaceutiques et pour le diagnostic |
Country Status (4)
Country | Link |
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EP (1) | EP0984985A2 (fr) |
CA (1) | CA2289110A1 (fr) |
FR (1) | FR2763071B1 (fr) |
WO (1) | WO1998050423A2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013037804A1 (fr) * | 2011-09-12 | 2013-03-21 | Laboratorios Del Dr. Esteve, S.A. | Procédé de surveillance des réponses des lymphocytes t cytotoxiques (ctl) par une réaction d'hypersensibilité de type retardée à l'aide d'épitopes viraux de ctl définis |
US20180243409A1 (en) * | 2003-12-12 | 2018-08-30 | City Of Hope | SYNTHETIC CONJUGATE OF CpG DNA AND T-HELP/CTL PEPTIDE |
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WO1992002543A1 (fr) * | 1990-08-01 | 1992-02-20 | Cytel Corporation | Nouveaux peptides immunosuppresseurs |
WO1993004080A1 (fr) * | 1991-08-26 | 1993-03-04 | Japan Tobacco Inc. | Pseudopentapeptides presentant une acivite d'immunomodulation |
WO1994005311A1 (fr) * | 1992-08-27 | 1994-03-17 | Deakin Research Limited | Analogues peptidiques de synthese a modifications retro, inverse ou retro-inverse |
WO1995023166A1 (fr) * | 1994-02-25 | 1995-08-31 | Deakin Research Limited | Epitopes de lymphocytes t inverses ou retro-inverses synthetiques |
WO1995024916A1 (fr) * | 1994-03-14 | 1995-09-21 | Centre National De La Recherche Scientifique | RETROPEPTIDES, ANTICORPS DIRIGES CONTRE CES DERNIERS, ET LEURS UTILISATIONS POUR LA VACCINATION ET LE DIAGNOSTIC $i(IN VITRO) |
WO1995029193A2 (fr) * | 1994-04-22 | 1995-11-02 | The Government Of The United States Of America Represented By The Secretary, Department Of Health And Human Services | Antigenes du melanome |
WO1996039443A1 (fr) * | 1995-06-06 | 1996-12-12 | Igen, Inc. | Analogues de peptides et leur utilisation en tant qu'haptenes pour l'induction d'anticorps catalytiques |
WO1997034613A1 (fr) * | 1996-03-19 | 1997-09-25 | University Of Virginia Patent Foundation | Peptides reconnus par des lymphocytes cytotoxiques specifiques du melanome restreints par a1, a2 et a3, leurs utilisations |
WO1998002538A1 (fr) * | 1996-07-11 | 1998-01-22 | Introgene B.V. | Analogues de peptides associes au melanome et vaccins contre le melanome |
-
1997
- 1997-05-07 FR FR9705677A patent/FR2763071B1/fr not_active Expired - Fee Related
-
1998
- 1998-05-07 EP EP98924401A patent/EP0984985A2/fr not_active Withdrawn
- 1998-05-07 CA CA002289110A patent/CA2289110A1/fr not_active Abandoned
- 1998-05-07 WO PCT/FR1998/000923 patent/WO1998050423A2/fr not_active Application Discontinuation
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WO1992002543A1 (fr) * | 1990-08-01 | 1992-02-20 | Cytel Corporation | Nouveaux peptides immunosuppresseurs |
WO1993004080A1 (fr) * | 1991-08-26 | 1993-03-04 | Japan Tobacco Inc. | Pseudopentapeptides presentant une acivite d'immunomodulation |
WO1994005311A1 (fr) * | 1992-08-27 | 1994-03-17 | Deakin Research Limited | Analogues peptidiques de synthese a modifications retro, inverse ou retro-inverse |
WO1995023166A1 (fr) * | 1994-02-25 | 1995-08-31 | Deakin Research Limited | Epitopes de lymphocytes t inverses ou retro-inverses synthetiques |
WO1995024916A1 (fr) * | 1994-03-14 | 1995-09-21 | Centre National De La Recherche Scientifique | RETROPEPTIDES, ANTICORPS DIRIGES CONTRE CES DERNIERS, ET LEURS UTILISATIONS POUR LA VACCINATION ET LE DIAGNOSTIC $i(IN VITRO) |
WO1995029193A2 (fr) * | 1994-04-22 | 1995-11-02 | The Government Of The United States Of America Represented By The Secretary, Department Of Health And Human Services | Antigenes du melanome |
WO1996039443A1 (fr) * | 1995-06-06 | 1996-12-12 | Igen, Inc. | Analogues de peptides et leur utilisation en tant qu'haptenes pour l'induction d'anticorps catalytiques |
WO1997034613A1 (fr) * | 1996-03-19 | 1997-09-25 | University Of Virginia Patent Foundation | Peptides reconnus par des lymphocytes cytotoxiques specifiques du melanome restreints par a1, a2 et a3, leurs utilisations |
WO1998002538A1 (fr) * | 1996-07-11 | 1998-01-22 | Introgene B.V. | Analogues de peptides associes au melanome et vaccins contre le melanome |
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BENKIRANE, NADIA ET AL: "Exploration of requirements for peptidomimetic immune recognition. Antigenic and immunogenic properties of reduced peptide bond pseudopeptide analogs of a histone hexapeptide" J. BIOL. CHEM. (1996), 271(52), 33218-33224 CODEN: JBCHA3;ISSN: 0021-9258, 1996, XP002053876 * |
C.M. HILL ET AL.: "Exploration of Requirements for Peptide Binding to HLA DRB1*0101 and DRB*0401" JOURNAL OF IMMUNOLOGY, vol. 152, no. 6, 15 mars 1994, pages 2890-2898, XP002053879 BALTIMORE US * |
GUICHARD, G. ET AL: "Synthesis and antigenic properties of reduced peptide bond pseudopeptide analogs of a histone H3 hexapeptide" PEPT. RES. (1994), 7(6), 308-21 CODEN: PEREEO;ISSN: 1040-5704,1994, XP002053878 * |
GUICHARD, GILLES ET AL: "Efficient binding of reduced peptide bond pseudopeptides to major histocompatibility complex class I molecule" J. BIOL. CHEM. (1995), 270(44), 26057-9 CODEN: JBCHA3;ISSN: 0021-9258,1995, XP002053877 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180243409A1 (en) * | 2003-12-12 | 2018-08-30 | City Of Hope | SYNTHETIC CONJUGATE OF CpG DNA AND T-HELP/CTL PEPTIDE |
US10596254B2 (en) * | 2003-12-12 | 2020-03-24 | City Of Hope | Synthetic conjugate of CpG DNA and T-help/CTL peptide |
US10987420B2 (en) | 2003-12-12 | 2021-04-27 | City Of Hope | Synthetic conjugate of CpG DNA and T-help/CTL peptide |
WO2013037804A1 (fr) * | 2011-09-12 | 2013-03-21 | Laboratorios Del Dr. Esteve, S.A. | Procédé de surveillance des réponses des lymphocytes t cytotoxiques (ctl) par une réaction d'hypersensibilité de type retardée à l'aide d'épitopes viraux de ctl définis |
ES2490915R1 (es) * | 2011-09-12 | 2015-01-02 | Laboratorios Del Dr. Esteve, S.A. | Método para monitorizar las respuestas de linfocitos T citotóxicos (LTC) mediante una reacción de hipersensibilidad de tipo retardado usando epítopos de LTC definidos |
Also Published As
Publication number | Publication date |
---|---|
EP0984985A2 (fr) | 2000-03-15 |
WO1998050423A3 (fr) | 1999-08-19 |
FR2763071A1 (fr) | 1998-11-13 |
CA2289110A1 (fr) | 1998-11-12 |
FR2763071B1 (fr) | 2003-05-16 |
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