WO2003074565A2 - Peptides utilisables en immunotherapie antitumorale. - Google Patents
Peptides utilisables en immunotherapie antitumorale. Download PDFInfo
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- WO2003074565A2 WO2003074565A2 PCT/FR2003/000698 FR0300698W WO03074565A2 WO 2003074565 A2 WO2003074565 A2 WO 2003074565A2 FR 0300698 W FR0300698 W FR 0300698W WO 03074565 A2 WO03074565 A2 WO 03074565A2
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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
- C07K14/82—Translation products from oncogenes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to peptides representing epitopes shared by tumor antigens, and to their use in immunotherapy.
- Vaccination or peptide immunotherapy is a therapeutic approach which is currently the subject of great interest in the context of the prevention or treatment of cancers. Its principle is based on immunization with peptides reproducing T epitopes of tumor-associated antigens (TAA) recognized by cytotoxic T lymphocytes (CTL), which play a major role in the elimination of cancer cells expressing these antigens at their area.
- TAA tumor-associated antigens
- CTL cytotoxic T lymphocytes
- the CTLs do not recognize the entire protein antigens, but peptide fragments thereof, presented by the molecules of the major histocompatibility complex (MHC) expressed on the surface of different cells. It is these peptide fragments which constitute the T epitopes.
- MHC major histocompatibility complex
- the peptides presented by the major histocompatibility class I complex (MHC I) generally have 8 to 11 amino acids, and are recognized by the CD8 + T cells, which represent the major component. of the cytotoxic response.
- the peptides presented by the major class II histocompatibility complex (MHC II) generally have 13 to 18 amino acids and are recognized by CD4 + T cells.
- melanoma-associated antigens two main classes of melanoma-associated antigens (MAA) have been identified: melanoma-specific antigens, little or not expressed in normal tissues, and melanocyte differentiation antigens, which are also expressed by melanocytes (for review, see CASTELLI et al., 2000, J Cell Physiol, 182, 323-31; KIRKIN et al, 2002, Cancer Invest, 20, 222-36).
- Melanocyte differentiation antigens such as Melan-A / MART-1, gp-100 and tyrosinase, are expressed by a significant proportion of melanoma-type tumors.
- these antigens are effectively recognized both by the CTLs of healthy subjects and by those of melanoma patients (BENLALAM et al, 2001, Ewr JImrnunol, 31, 2007-15; KAWAKAMI et al., 2000, J Immunother, 23, 17-27; LABARRI ⁇ R ⁇ et al., 1998, Int J Cancer, 78, 209-15; PITT ⁇ T et al, 1999, J Exp Med, 190, 705-15; VALMORI et al., 2002, Cancer Res, 62 , 1743-50).
- Melanoma-specific antigens include families of antigens known as “shared by cancer and testes”: MAGE, GAGE, BAGE and LAGE. These antigens, which are expressed by different tumors, generate CTL epitopes presented in a wide variety of HLA contexts, including HLA-B and C (KIRKIN et al, 2002). With the exception of NY-ESO-1 (JAGER et al, 1998, JExp Med, 187, 265-70), and unlike melanocyte differentiation antigens, antigens shared by cancer and testes are rarely recognized by tumor infiltrating lymphocytes (TILs).
- TILs tumor infiltrating lymphocytes
- the identification of peptides presented in different HLA contexts also makes it possible to develop tools making it possible to measure the T cell response in immunized patients. Indeed, if the identification of new antigenic peptides is essential to increase the availability and effectiveness of vaccines, it is also essential to improve the monitoring of the CTL response of patients who have been immunized with peptides or other forms of antigens, such as complete recombinant proteins or recombinant viruses.
- HLA-B35 is one of the most frequent HLA-B alleles, present in approximately 20% of the Caucasian population (60% of which corresponds to allele B * 3501; MORI et al, 1997, Transplantation, 64, 1017-27), the identification of new peptides antigens presented in the context HLA-B35 is very desirable for the development of cancer immunotherapy.
- the inventors have identified new epitopes, which are derived from melanocytic antigens or from antigens shared by cancers and testes, and which are presented in the HLA-B35 context.
- the peptides reproducing these epitopes can be used for diagnostic or therapeutic purposes, in the context of the prevention or treatment of melanomas in patients expressing an HLA-B35 allele, in particular HLA-B * 3501 or HLA-B * 3503.
- the subject of the present invention is the use of at least one immunogenic peptide representing a T epitope presented by the MHC I, chosen from: a) a peptide comprising the sequence EX ⁇ AGIGILX 2 (SEQ ID NO: 1) in which Xj represents A or P, and X 2 represents T or Y, capable of inducing a cytotoxic response directed against the Melan-A antigen; b) a peptide comprising the sequence ENDPIGHNY (SEQ ID ⁇ O: 2), capable of inducing a cytotoxic T response directed against the MAGE-A6 antigen; c) a peptide comprising the sequence NPLDCNLYR (SEQ ID ⁇ O: 3), capable of inducing a cytotoxic response directed against the gplOO antigen; d) a peptide comprising the sequence TPRLPSSADNEF (SEQ ID ⁇ O: 4) capable of inducing a cytotoxic response directed against the tyrosinase anti
- NPLDCNLYR SEQ ID ⁇ O: 3
- NPLDCNLYRY SEQ ID ⁇ O: 13
- a combination comprising at least two peptides of two different categories among the categories a), b), c), d) or e) defined above, in order to d '' be able to induce a cytotoxic response against at least two tumor antigens.
- the present invention also relates to a multi-epitopic composition associating at least two peptides of two different categories among the categories a) b) c) d) or e) above.
- these compositions comprise at least one peptide from each of these categories a) b) c) d) or e).
- Multi-epitopic compositions in accordance with the invention may also comprise one or more other immunogenic peptides, derived from the antigens mentioned above, or from different antigens. These peptides can represent epitopes derived from the same antigen, or from two or more different antigens.
- the peptide ENDPIGHLY SEQ ID ⁇ O: 19
- the peptide ENDPIGHLY SEQ ID ⁇ O: 19
- compositions can also comprise, to be more widely usable in a population whose individuals carry different HLA alleles, one or more peptides presented by MHC I molecules other than HLA-B35.
- peptide PLDCNLYRY SEQ ID ⁇ O: 20
- Multi-epitopic compositions in accordance with the invention may in particular be in the form of a chimeric polypeptide comprising one or more copies of each of the epitopes chosen.
- Chimeric polypeptides in accordance with the invention can be easily obtained by methods known in themselves, and in particular by conventional techniques of recombinant DNA.
- the present invention also relates to a polynucleotide coding for a chimeric polypeptide according to the invention, as well as a nucleic acid vector containing said polynucleotide.
- the present invention also encompasses the use of said polynucleotide or said nucleic acid vector in tumor immunotherapy.
- the HLA-B35 antigen presenting cells charged in this way are also part of the object of the present invention.
- the polynucleotides according to the invention preferably integrated into nucleic acid vectors, in particular viral vectors such as adenoviruses, can also be administered by injection to the patient to be treated.
- a polynucleotide comprising a sequence coding for a peptide defined by one of the sequences SEQ ID NO: 1 to 18 above, and in particular a polynucleotide coding for a chimeric polypeptide according to the invention, can also be used to transfect in vitro professional HLA-B35 antigen presenting cells, in particular dendritic cells, which are then injected into the patient, as described for example by KAPLAN et al (J. Immunol., 163 (2), 699-707, 1999) or KIM et al. (Armais of Surgical Oncology, 5 (1), 64-76, 1998). These transfected antigen presenting cells are also part of the object of the present invention.
- the present invention also encompasses the use of the peptides defined above, for the in vitro detection of CTLs directed against one or more of the antigens Melan-A, MAGE-A6, gplOO, tyrosinase, and NY-ESO-1, in a biological sample obtained from an HLA-B35 subject. These peptides can also be used to carry out the specific sorting of these CTLs.
- the CTLs thus isolated can then be amplified in vitro and reinjected in large numbers (of the order of a billion) to the patient.
- the present invention also relates to therapeutic compositions comprising, as active principle, a mutated ras peptide, a multi-epitopic composition, a chimeric polypeptide, a polynucleotide, or an antigen presenting cell according to the invention.
- compositions in accordance with the invention may also comprise the usual excipients, as well as adjuvants usually used in immunotherapy, and making it possible, for example, to favor the administration of the active principle, to stabilize it, to increase its immunogenicity, etc.
- EAAGIGILTY SEQ ID NO: 9
- EAAGIGILY SEQ ID NO: 10
- EPAGIGILTY SEQ ID NO: 11
- EPAGIGILTV SEQ ID NO: 12
- the present invention also encompasses these particular peptides, as well as any multi-epitopic composition comprising at least one of these peptides.
- This notably includes chimeric polypeptides containing at least one of these peptides.
- the polynucleotides encoding these chimeric polypeptides, and the nucleic acid vectors containing these polynucleotides are also part of the subject of the present invention.
- the inventors have also found that the peptide NPLDCVLYRY (SEQ ID ⁇ O: 13) derived from the gplOO antigen, was also recognized, in the HLA * A0101 context, by a CD8 T clone (M199.6.12) from a population TILs of melanoma.
- PLDCNLYRY SEQ ID ⁇ O: 20
- the peptide SEQ ID ⁇ O: 20 also forms part of the subject of the present invention, as well as the chimeric polypeptides containing at least this peptide.
- the polynucleotides encoding these chimeric polypeptides, and the nucleic acid vectors containing these polynucleotides are also part of the subject of the present invention.
- This peptide, the chimeric polypeptides containing it, as well as the polynucleotides coding for these chimeric polypeptides can be used in the context of the detection or treatment of melanomas in HLA-A1 subjects, and in particular HLA * A0101, according to the same techniques as those indicated above for the peptides recognized in the HLA-B35 context.
- PCT application WO 92/14756 proposes the use of peptides reproducing ras epitopes mutated at codon 12 or codon 61.
- these epitopes are presented by MHC II (DQ and DR), and therefore induce a CD4 + response.
- CD4 + helper lymphocytes make it possible to increase the cytotoxic response (WALTER et al, N. Engl. J. Medicine, 333, 1038, 1995 ), the CD8 + response remains the essential player in cytotoxicity.
- the peptides thus selected can stimulate the growth of specific CTLs from PBL in vitro.
- these CTLs weakly recognize mutated tumor cells, suggesting that the endogenous expression of these epitopes is limited (VAN ELSAS et al, Int. J. Cancer, 61, 389, 1995; ABRAMS et al, Cell Immunol, 182, 137, 1997; BERGMANN et al, Cell Immunol, 187, 103, 1998), and therefore do not allow efficient elimination of tumor cells by specific CTLs, which considerably limits their interest in immunotherapy.
- ras epitopes restricted to MHC I and presented effectively by a significant fraction of human tumors.
- the inventors have now identified a ras epitope mutated in position 61 by substitution of a glutamine by an arginine (Q61R), and restricted to MHC I.
- This epitope hereinafter called 55-64 Q 1R is presented effectively by several lines of HLA-A * 0101 + melanoma expressing a ras oncogene carrying the Q61R mutation. It is capable of specifically inducing the expansion of clones of tumor infiltrating lymphocytes (TIL) obtained from these melanomas.
- TIL tumor infiltrating lymphocytes
- the dendritic cells loaded with this peptide efficiently stimulate specific CTLs from peripheral blood lymphocytes (PBL) from healthy donors HLA-A * 0101, and these CTLs recognize all of the HLA-A * 0101 melanoma lines. expressing the ras Q61R oncogene, and do not recognize cells expressing the non-mutated ras protein.
- the peptide 55-64 Q61R does not have a higher anchoring capacity than that of the corresponding wild-type peptide.
- the HLA-A * 0101 binding affinity of the wild type peptide is similar to that of peptide 55-64 Q61R .
- the present invention also relates to the use of an immunogenic ras mutated peptide of sequence ILDTAGREEY (SEQ ID NO: 35) for obtaining a medicament intended for the immunotherapeutic treatment of tumors in a HLA-A * 0101 or HLA-B * 1501 patient,:
- said medicament can be used for the treatment of tumors expressing a K-ras, H-ras or N protein -r ⁇ s mutated by substitution of glutamine in position 61 with an arginine.
- Said peptide can be used in particular in the context of multi-epitopic compositions, and in particular of chimeric polypeptides, as mentioned above.
- a polynucleotide encoding such a chimeric polypeptide, as well as a nucleic acid vector containing said polynucleotide can also be used as mentioned above.
- Said peptide or said polynucleotide can also be used respectively to load or transfect in vitro cells presenting the professional HLA-A * 0101 or HLA-B * 1501 antigen, in order to induce the proliferation of anti-tumor CTLs.
- the antigen presenting cells, HLA-A * 0101 or HLA-B * 1501 loaded or transfected in this way are also part of the object of the present invention.
- Said mutated ras peptide can also be used to detect in vitro CTLs directed against the mutated ras antigen from which it is derived, in a biological sample obtained from a subject HLA-A * 0101 or HLA-B * 1501. It can also be used to perform the specific sorting of these CTLs.
- EXAMPLE 1 EVIDENCE OF ANTIGENIC EPITOPES PRESENT IN THE HLA-B35 CONTEXT AND RECOGNIZED BY CTLS CLONES:
- COS-7 cells cultured in DMEM medium (Sigma) containing 10% fetal calf serum, antibiotics and L-glutamine, were transfected with cDNA coding for one of the HLA-B * alleles 3501, HLA-B * 3503, HLA-B * 3508, alone or in combination with a cDNA encoding one of the antigens MAGE-A3, MAGE-A6, tyrosinase, Melan- A / MART-1, gp-100, and NY-ESO1 / LAGE-2.
- the transfection was carried out according to the protocol described by DE PLAEN et al. (Methods, 12, 125-42, 1997). 16.5 10 3 COS cells-
- COS-7 cells were used 48 hours after transfection to stimulate the various TILs clones (2x10 3 to 10 4 ).
- the culture supernatants were removed 6 hours later and their TNF concentration was determined by measuring the cytotoxicity of these culture supernatants for the clone 13 WEHI 164, as described by DE PLAEN et al.
- TNF Secretion of TNF by the TIL clones in the presence of COS-7 cells transfected only with a cDNA coding for a HLA-B35 molecule.
- TNF Secretion of TNF by the TILs clones in the presence of COS-7 cells co-transfected with a cDNA coding for a HLA-B35 molecule and a cDNA coding for an MAA.
- EXAMPLE 2 IDENTIFICATION OF THE ANTIGENIC EPITOPES PRESENT IN THE HLA-B35 CONTEXT.
- the inventors constructed a series of fragments of the cDNAs of the various MAAs.
- the Melan-A / MART-1 and NY-ESO-1 cDNA fragments were obtained by exonuclease III digestion: the plasmids comprising the cDNA coding for Melan-A / MART-1 or NY-ESO-1 were opened by Xbal and Apal, or SpHI and Notl respectively.
- the fragments obtained were then digested with exonuclease III using the Erasea-base system (Promega, Madison, WI).
- the cDNA fragments corresponding to the fragments of the tyrosinase and gplOO antigens were obtained by PCR from the plasmids containing the complete sequence coding for each of these two antigens.
- the expression of these different fragments by the COS-7 cells is carried out as in Example 1.
- the responses of the different TIL clones towards these COS-7 cells co-transfected with the antigen fragments and the relevant HLA-B35 allele are measured as in Example 1.
- the results are illustrated in FIG. 2: The positions of the regions of the cDNAs coding for the potential epitopes are indicated in base pairs.
- TIL populations recognize epitopes which are encoded respectively by the Melan-A cDNA fragment extending from nucleotides 95 to 119
- amino acids 32 to 39 amino acids 32 to 39
- the cDNA fragment gplOO 1200 to 1601 amino acids 400 to 533
- the cDNA fragment tyrosinase 937 to 975 amino acids 313 to 325
- the cDNA fragment NY-ESO -1 259 to 339 amino acids 87 to 113
- EXAMPLE 3 IDENTIFICATION OF THE ANTIGENIC PEPTIDES PRESENT IN THE HLA-B35 CONTEXT.
- the wild type and modified peptides whose sequences are indicated in Table I below were obtained from EPYTOP (Nîmes, France). Purity (> 70%) is controlled by high yield reverse phase liquid chromatography (HPLC). The peptides are lyophilized, then dissolved in DMSO at 10 mg / ml and stored at -80 ° C.
- the response of the various TIL clones was evaluated, by a TNF release test, after
- BM36.1 cells KELLY et al, 1992, Nature, 355, 641-4
- BM36.1 cells are labeled for 1 h at 37 ° C. with 100 Ci of 51 Cr (Na2 51 CrO4, ORIS, Gif-sur-Yvette, France).
- the cells are then pulsed for 20 minutes with the various synthetic peptides.
- 10 3 BM36.1 cells thus treated are incubated with 10 4 T cells of the clone (Effector: Target ratio of 10: 1) for 4 hours.
- the culture supernatants are recovered and the amount of 51 Cr released is evaluated using a ⁇ plate counter (EG&G Wallac, Evry, France).
- a negative control is carried out with an irrelevant peptide.
- the amount of peptide necessary to obtain 50% of the maximum lysis (EC50) has been determined.
- the affinity and the stability of the peptides for HLA-B35 were measured as described by TOURDOT et al, Eur. J. Immunol., 30: 3411-3421, 2000).
- the BM36.1 cells are incubated for 18 h with a range of concentrations of each peptide.
- BM36.1 cells are simultaneously incubated with a range of a reference peptide, which binds to HLA-B35 (peptide 37F, TAKAMIYA et al, Int. Immunol, 6: 255-261, 1994; SCH ⁇ NBACH et al, J. Immunol, 154: 5951-5958, 1995).
- the relative amount of fixed peptide is then estimated at each concentration, for each of the peptides, by measuring the stabilization of HLA-B35 on the cell surface. This measurement is carried out by flow cytometry using an anti HLA-B / C antibody (which in the case of BM36.1 cells recognizes only HLA-B * 3501, these cells spontaneously expressing no molecule HLA-C).
- The% of binding to B * 35 is then calculated for each concentration, by fixing the 100% of binding for 100 ⁇ M of each peptide.
- the BM36.1 cells are incubated for 18 h with 100 ⁇ M of each of the peptides. They are then incubated in the presence of BFA (10 ⁇ g / ml) for one hour in order to block the transport of newly synthesized HLA molecules on the cell surface.
- BFA 10 ⁇ g / ml
- BM36.1 cells are washed in PBS and taken up in culture medium containing 5% SNF and 0.5 ⁇ g / ml of BFA, which constitutes time 0. Cells are then removed, after 30 minutes, 1 h, 2 h, 4 h and 6 hours of incubation.
- the relative amount of fixed peptide is then estimated at each time, for each of the peptides, by the measurement of stabilization of HLA-B35 on the cell surface. This measurement is carried out in flow cytometry using an anti-HLA-B / C antibody.
- the time indicated in Table II corresponds to the time of 1/2 life of the peptide on HLA-B * 35. The results are illustrated in Figure 3, and Table II below. Table II
- FIG. 3 legend: On the ordinate, the percentage of cell lysis obtained. On the abscissa the peptide concentration (in nM).
- Tables I and II and of Figure 3 show that: * Three overlapping Melan-A peptides are recognized by the clone M28.10B. The most effectively recognized peptide is decapeptide 26-35 (EAAGIGILTV, SEQ ID NO: 8,). This Melan-A 26-35 peptide probably corresponds to the peptide naturally presented, in the context B * 3501, by the melanoma cells and recognized by the TILs of the M28 patient.
- the peptide 312-320 which has been shown to be recognized by a CTL clone in the context of HLA-B * 3501 (MOREL et al, 1999, Int J Cancer, 83, 755-9), is not recognized by the clone TIL M171.100B.
- epitopes of type 11-mer cells AARNOUDSE et al, 1999, Int.
- the inventors analyzed their presentation by a panel of melanoma cell lines expressing the different antigens, from which are derived. these peptides, and the HLA-B * 3501 molecules. To increase the expression on the surface of cells of HLA molecules, the melanoma cells were preincubated, for certain experiments, 48 hours in medium containing 500 U / ml of IFN- ⁇ (Tebu, Paris, France).
- the melanoma cell lines were established from fragments of metastatic tumors or of tumors having invaded the lymph nodes, and cultured in RPMI 1640 medium (Sigma, St Loins, USA) containing 10% fetal calf serum (Gibco-BRL, Cergy-Pontoise, France), penicillin (10 mg / ml), streptomycin (1 OU / ml) (Sigma) and L-glutamine (2nM) (Sigma, St Louis, USA) . The results are illustrated in FIG.
- the specific clone of gplOO recognizes a melanoma line independently of treatment with IFN- ⁇ (M147). This clone also recognizes the lines M125 and M140 after treatment with IFN- ⁇ (weakly for Ml 25). The specific clone of NY-ESO-1 recognizes one of these lines spontaneously expressing this antigen (M47) and the other two lines after treatment with IFN- ⁇ (M131 and M140, FIG. 4).
- the spontaneous recognition of the melanoma lines by the different CD8 T clones shows that the epitopes identified are naturally presented by these tumors.
- the wild type ras peptides 55-64 w ⁇ (ILDTAGQEEY; SEQ ID NO: 34), the mutated decamer 55-64 Q61R , and the peptide MAGE-A3 (ENDPIGHLN; SEQ ID ⁇ O: 20) were obtained from SY ⁇ T: EM (Nîmes, France). The purity (> 85%) is checked by high yield liquid chromatography in reverse phase. The peptides are lyophilized, then dissolved in DMSO at 10 mg / ml and stored at -80 ° C.
- the antigenicity of the peptide 55-64 Q61R and that of its wild type analogue (55-64 w ⁇ ), are evaluated by testing the capacity of these peptides to induce the growth of specific cytotoxic T lymphocytes (CTL) by in vitro stimulation of peripheral blood mononuclear cells (PBMC) by dendritic cells (DC) pulsed with these peptides.
- CTL cytotoxic T lymphocytes
- PBMC peripheral blood mononuclear cells
- DC dendritic cells
- CD8 + lymphocytes are obtained from the PBMCs of an HLA-A * 0101 donor by negative sorting of CD4 + T cells on magnetic beads (MILTENY BIOTECH, France).
- the dendritic cells are prepared from adherent PBMCs cultured for 7 days in 6-well culture plates containing RPMI culture medium supplemented with 10% fetal calf serum, 50 ng / ml of GM-CSF (SIGMA) and 50 ng / ml of IL-4 (SIGMA).
- SIGMA GM-CSF
- SIGMA GM-CSF
- SIGMA IL-4
- the maturation of the dendritic cells is induced for 2 days in an RPMI culture medium supplemented with 10% fetal calf serum, 10 ng / ml of TNF- ⁇ (SIGMA) and 100 ⁇ g / ml of Poly-IC (SIGMA).
- the mature dendritic cells are incubated for 2 hours with 5 ⁇ g / ml of peptide ras 55-64 Q61R or of peptide ras 55-64 ⁇ ; they are then washed to remove the free peptides.
- the dendritic cells pulsed with the peptide ras 55-64 Q61R or the peptide ras 55-64 w ⁇ are used to stimulate CD8 + lymphocytes (3.10 7 cells). 3 stimulations are performed one week apart.
- Each culture well is tested for the presence of CTLs specific for the peptide.
- 7 days after the last stimulation 2.10 6 BM36.1 cells and expressing HLA-A * 0101 (KELLY et al. Nature. 355. 641. 1992) previously incubated at 37 ° C for 12 hours in RPMI supplemented with 100 ⁇ M of peptide N-r ⁇ s 55-64 w ⁇ or 55-64 Q61R , 1 ⁇ M of ⁇ 2 microglobulin, and washed in PBS, are added to each well.
- the specific CTL response to stimulation by the wild-type or mutated peptide Nr ⁇ zs is measured by assaying for interferon ⁇ (IFN- ⁇ ), as described by LAB ARRIERE et al. (Int. J. Cancer, 78, 209, 1998).
- IFN- ⁇ interferon ⁇
- Two of the five culture wells stimulated with the peptide ras show a proliferation of CTL specific for the peptide (0.3 and 0.5% of reactive cells per well), while no proliferation is observed in the wells stimulated with the peptide 55-64 w ⁇ .
- EXAMPLE 7 PROPERTIES OF A PEPTIDE-INDUCED T-LYMPHOCYTE CLONE 55-64 Q61R Lymphocyte clones were obtained by limiting dilution from the cells of the culture well containing 0.5% of reactive T cells.
- the capacity of the T cells from one of these clones to lyse BM36.1 cells presenting the peptide 55-64 Q IR or the peptide 55-64 ⁇ is evaluated according to a standard assay for the release of 51 Cr (HERIN et al. , Int. J. Cancer, 39, 390-396, 1987).
- BM36.1 cells labeled with 51 Cr (Na2 51 CrO4, ORIS, Gif-sur-Yvette, France). The cells are then pulsed for 1 hour at 37 ° C. with 10 ⁇ M of peptide 55-64 ⁇ or peptide 55-64 Q61R , and washed.
- the specificity of this clone with respect to cells expressing HLA-A * 0101 and the wild-type protein or the N-ras protein carrying the Q61R mutation is evaluated on transfected COS cells, or on HLA-A * melanoma cells. 0101, expressing or not the Q61R mutation.
- a 334 bp cDNA coding for a fragment of the wild-type N-ras protein is obtained by PCR amplification, from complete cDNA of the wild-type N-ras protein.
- a cDNA coding for a fragment of the protein Nr s mutated at position 61 by substitution of glutamine with an arginine is obtained by site-directed mutagenesis.
- the wild-type or mutated cDNA is inserted into the vector pcDNA3 and amplified in the bacterial strain E. coli TOP 10 F '(INVITROG ⁇ N, reference C2020-03).
- a cDNA coding for the molecule HLA-A * 0101 is introduced into the vector pcDNA 3.1 (INVITROG ⁇ N, reference CV790-20).
- COS-7 cells are co-transfected with these constructs as described below:
- COS-7 cells (BRICHARD et al, J. ⁇ xp. Med., 178, 489, 1993) are cultured in DM ⁇ M medium (BIOWHITTAK ⁇ R) containing 10% fetal calf serum, 100 U / ml of penicillin, 100 ⁇ g / ml of streptomycin (SIGMA, St Louis, USA) and 2 mM of glutamine-L (SIGMA, St Louis, USA).
- DM ⁇ M medium containing 10% fetal calf serum, 100 U / ml of penicillin, 100 ⁇ g / ml of streptomycin (SIGMA, St Louis, USA) and 2 mM of glutamine-L (SIGMA, St Louis, USA).
- COS cells are co-transfected with 100 ng of a mixture of the pcDNA 3.1 vector expressing HLA-A * 0101 and a pcDNA3 vector expressing the wild-type or mutated N-r ⁇ s protein, by the chloroquine-dextran process D ⁇ A ⁇ (BRICHARD et al, J. ⁇ xp. Med., 178, 489, 1993; S ⁇ D et al, PNAS, 84, 3365, 1987,). The details of this method are described by DE PLAEN et al. (Methods, 12, 125, 1997).
- TNF The stimulation of T cells is measured by assaying TNF (DE PLAEN et al, Methods, 12, 125, 1997; LABARRIERE et al, Int. J. Cancer, 78, 209, 1998). 2.10 3 to 10 4 cells of the tested T clone are added to 3.10 4 COS cells, 48 hours after transfection, or to 3.10 4 melanoma cells. The culture supernatants are recovered 6 hours later and their TNF content is determined by measuring their cytotoxic effect on clone 13 of the WEHI 164 murine fibrosarcoma (BRICHARD et al, J. Exp. Med., 178, 489, 1993) by MTT colorimetric assay.
- FIG. 5a The results obtained with the transfected COS cells are presented in FIG. 5a: on the abscissa, peptides ras of wild type or mutated at position 61 by substitution of glutamine with an arginine; ordinate, concentration of TNF in pg / ml
- the results show that the T cells of the clone are strongly stimulated by the cells expressing the protein Nr -s Q61R, whereas only a weak stimulation with the protein N- is observed wild ras.
- a CD8 + T clone from a TIL population of melanoma recognizes an undescribed peptide derived from the gplOO antigen, in the context A * 0101 (PLDCVLYRY, SEQ ID NO: 20).
- the antigenicity of this peptide was tested by evaluating the ability of the clone to lyse BM36.1 cells presenting the peptide of interest in the context of HLA-A * 0101.
- BM36.1 cells are labeled for 1 h at 37 ° C. with 100 Ci of 51 Cr (Na2 51 CrO4, ORIS, Gif-sur-Yvette, France). The cells are then pulsed for 20 minutes with the various synthetic peptides.
- 10 3 BM36.1 cells thus treated are incubated with 10 4 T cells of the clone (Effector: Target ratio of 10: 1) for 4 hours.
- the culture supernatants are recovered and the amount of 51 Cr released is evaluated using a ⁇ plate counter (EG&G Wallac, Evry, France).
- a negative control is carried out with an irrelevant peptide.
- this peptide is included in the sequence of the decamer recognized in the context B * 3501, but this peptide is not recognized by the clone M28.9B.
- the peptide VPLDCVLYRY (SEQ ID NO: 13) is also recognized in the context A * 0101 by the clone M199.6.12 (Table I and Figure 6).
- the spontaneous recognition by the clone Ml 99.6.12, of melanoma lines sharing HLA-A * 0101 shows that this epitope is effectively presented by these tumors.
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/506,334 US20060122119A1 (en) | 2002-03-04 | 2003-03-04 | Peptides for use in antitumor immunotherapy |
| AU2003232280A AU2003232280A1 (en) | 2002-03-04 | 2003-03-04 | Peptides for use in antitumor immunotherapy |
| EP03743400A EP1481009A2 (fr) | 2002-03-04 | 2003-03-04 | Peptides utilisables en immunotherapie antitumorale. |
| CA002477762A CA2477762A1 (fr) | 2002-03-04 | 2003-03-04 | Peptides utilisables en immunotherapie antitumorale |
| JP2003573030A JP2005533487A (ja) | 2002-03-04 | 2003-03-04 | 抗腫瘍免疫療法における使用のためのペプチド |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR02/02703 | 2002-03-04 | ||
| FR0202703A FR2836684B1 (fr) | 2002-03-04 | 2002-03-04 | Peptides ras mutes et leur utilisation en immunotherapie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003074565A2 true WO2003074565A2 (fr) | 2003-09-12 |
| WO2003074565A3 WO2003074565A3 (fr) | 2004-07-08 |
Family
ID=27741417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2003/000698 Ceased WO2003074565A2 (fr) | 2002-03-04 | 2003-03-04 | Peptides utilisables en immunotherapie antitumorale. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20060122119A1 (fr) |
| EP (1) | EP1481009A2 (fr) |
| JP (1) | JP2005533487A (fr) |
| AU (1) | AU2003232280A1 (fr) |
| CA (1) | CA2477762A1 (fr) |
| FR (1) | FR2836684B1 (fr) |
| WO (1) | WO2003074565A2 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010089064A1 (fr) * | 2009-02-05 | 2010-08-12 | Universitätsklinikum Heidelberg | Utilisation de peptides spécifiques dans la préparation d'un médicament pour le traitement d'une gammapathie monoclonale de signification indéterminée (gmsi) ou d'un myélome multiple latent (mml) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3604271A1 (fr) * | 2013-06-28 | 2020-02-05 | Auckland Uniservices Limited | Peptides pour conjugués d'acide aminé et de peptides et procédé de conjugaison |
| EP3731876A4 (fr) * | 2017-12-28 | 2022-04-06 | Gritstone bio, Inc. | Protéines se liant à l'antigène ciblant des antigènes partagés |
| WO2020037302A1 (fr) * | 2018-08-17 | 2020-02-20 | Gritstone Oncology, Inc. | Protéines se liant à l'antigène ciblant des antigènes partagés |
| IL266728B (en) * | 2019-05-19 | 2020-11-30 | Yeda Res & Dev | Identification of recurrent mutant neopeptides |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328689A (en) * | 1997-08-27 | 1999-03-03 | Norsk Hydro As | Peptides based on the p21 ras proto-oncogene protein for the treatment of cancer |
| US6667037B1 (en) * | 1998-10-09 | 2003-12-23 | Ludwig Institute For Cancer Research | Isolated peptides which bind to HLA-B35 molecules, larger peptides which contain these, nucleic acid molecules encoding peptides, and uses thereof |
| NO309798B1 (no) * | 1999-04-30 | 2001-04-02 | Targovax As | Peptidblanding, samt farmasoytisk sammensetning og kreftvaksine som innbefatter peptidblandingen |
| WO2001016320A1 (fr) * | 1999-08-30 | 2001-03-08 | Ludwig Institute For Cancer Research | Nonapeptides et decapeptides se fixant aux molecules hla et utilisation |
| WO2001053833A1 (fr) * | 2000-01-20 | 2001-07-26 | Ludwig Institute For Cancer Research | Peptides antigeniques mage fixant hla-b35 and hla-b44 |
| AUPQ776100A0 (en) * | 2000-05-26 | 2000-06-15 | Australian National University, The | Synthetic molecules and uses therefor |
-
2002
- 2002-03-04 FR FR0202703A patent/FR2836684B1/fr not_active Expired - Fee Related
-
2003
- 2003-03-04 WO PCT/FR2003/000698 patent/WO2003074565A2/fr not_active Ceased
- 2003-03-04 EP EP03743400A patent/EP1481009A2/fr not_active Withdrawn
- 2003-03-04 CA CA002477762A patent/CA2477762A1/fr not_active Abandoned
- 2003-03-04 JP JP2003573030A patent/JP2005533487A/ja active Pending
- 2003-03-04 US US10/506,334 patent/US20060122119A1/en not_active Abandoned
- 2003-03-04 AU AU2003232280A patent/AU2003232280A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010089064A1 (fr) * | 2009-02-05 | 2010-08-12 | Universitätsklinikum Heidelberg | Utilisation de peptides spécifiques dans la préparation d'un médicament pour le traitement d'une gammapathie monoclonale de signification indéterminée (gmsi) ou d'un myélome multiple latent (mml) |
| EP2221060A1 (fr) * | 2009-02-05 | 2010-08-25 | Universitätsklinikum Heidelberg | Utilisation de peptides spécifiques pour la préparation d'un médicament pour le traitement d'hyperglobulinémie monoclonale de signification indéterminée ou de myélome multiple couvant |
| US9011867B2 (en) | 2009-02-05 | 2015-04-21 | Ruprecht-Karls-Universitat Heidelberg | Use of specific peptides in the preparation of a medicament for the treatment of monoclonal gammopathy of undetermined significance (MGUS) or of smoldering multiple myeloma (SMM) |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2477762A1 (fr) | 2003-09-12 |
| EP1481009A2 (fr) | 2004-12-01 |
| FR2836684B1 (fr) | 2004-12-17 |
| WO2003074565A3 (fr) | 2004-07-08 |
| FR2836684A1 (fr) | 2003-09-05 |
| JP2005533487A (ja) | 2005-11-10 |
| AU2003232280A8 (en) | 2003-09-16 |
| US20060122119A1 (en) | 2006-06-08 |
| AU2003232280A1 (en) | 2003-09-16 |
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