EP2114998A1 - Nouvelles molecules multimeriques, leur procede de preparation, et leur utilisation pour la preparation de medicaments - Google Patents
Nouvelles molecules multimeriques, leur procede de preparation, et leur utilisation pour la preparation de medicamentsInfo
- Publication number
- EP2114998A1 EP2114998A1 EP08761833A EP08761833A EP2114998A1 EP 2114998 A1 EP2114998 A1 EP 2114998A1 EP 08761833 A EP08761833 A EP 08761833A EP 08761833 A EP08761833 A EP 08761833A EP 2114998 A1 EP2114998 A1 EP 2114998A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- group
- acid
- formula
- representing
- amino
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- 238000010979 pH adjustment Methods 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- MYDQAEQZZKVJSL-UHFFFAOYSA-N pentyl carbamate Chemical compound CCCCCOC(N)=O MYDQAEQZZKVJSL-UHFFFAOYSA-N 0.000 description 1
- 238000005897 peptide coupling reaction Methods 0.000 description 1
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 description 1
- 229910000343 potassium bisulfate Inorganic materials 0.000 description 1
- 230000005522 programmed cell death Effects 0.000 description 1
- 235000019833 protease Nutrition 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 201000003068 rheumatic fever Diseases 0.000 description 1
- 206010039073 rheumatoid arthritis Diseases 0.000 description 1
- 238000011894 semi-preparative HPLC Methods 0.000 description 1
- KZJPVUDYAMEDRM-UHFFFAOYSA-M silver;2,2,2-trifluoroacetate Chemical compound [Ag+].[O-]C(=O)C(F)(F)F KZJPVUDYAMEDRM-UHFFFAOYSA-M 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical compound O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 201000000596 systemic lupus erythematosus Diseases 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005829 trimerization reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
- C07K14/70575—NGF/TNF-superfamily, e.g. CD70, CD95L, CD153, CD154
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Definitions
- the subject of the invention is novel multimeric molecules, process for their preparation and their use for the preparation of medicaments.
- the subject of the invention is also molecules capable of activating or inhibiting the immune response.
- CD40 / CD40L couple in the immune response has led many groups to use antibodies directed against these two molecules for therapeutic purposes, so as to inhibit or activate the immune system.
- the administration of anti-CD40L antibodies has yielded encouraging results in the treatment of autoimmune diseases such as murine experimental allergic encephalomyelitis (a model of human multiple sclerosis) (Howard et al, 1999) or in the treatment rejection of renal allografts in monkeys (Kirk et al., 1999). In both cases, the antibodies inhibited a harmful activity of the immune system.
- anti-CD40 agonist antibodies has, on the one hand, greatly improved the response to peptide anti-tumor vaccines in mice (Diehl et al., 1999) and on the other hand, increase the efficacy of CD4 + T cells in the fight against murine tumors (Sotomayor et al., 1999, Lode et al., 2000). Tumor regression in murine models has been demonstrated after injection of dendritic cells (CDs) transformed with adenovirus encoding CD40L (Kikuchi et al., 2000).
- CDs dendritic cells
- the object of the invention is to provide multimeric ligands designed to interfere with protein-protein interactions.
- the present invention also aims at the preparation of molecules that can interfere with multivalent protein-protein interactions.
- the present invention also aims at the preparation of molecules capable of modulating the activity of family members of TNF and TNF-R.
- the present invention aims to provide a synthetic molecule acting on the CD40 / CD40L system.
- the present invention relates to a compound corresponding to the following formula (I):
- - k and j represent independently of one another 0 or 1
- - Y represents a macrocycle whose ring comprises from 9 to 36 atoms, and is functionalized by three amine functions allowing the attachment of Rc by its carboxylic function C -terminal and by a chain allowing attachment of the spacer arm Z via an X link,
- R 0 represents a receptor binding unit of the TNF 5 superfamily and preferably corresponds to a ligand-derived sequence chosen from the residues forming the interface with the ligand receptor, which sequence is capable of interacting with the receptor, said ligand being chosen from TNF superfamily receptor ligands, and especially from the following ligands: EDA, CD40L, FasL, OX40L, AITRL, CD30L, VEGI, LIGHT, 4-1BBL, CD27L, LTa , TNF, LT ⁇ , TWEAK, APRIL, BLYS, RANKL and TRAIL, X represents a chemical function making it possible to connect the group Y to the spacer arm and is chosen from the following functions:
- Z represents a bi-, tri- or tetrafunctional spacer arm allowing the
- n and n being as defined above, p being an integer ranging from 1 to 6, where u is an integer ranging from 1 to 4, W representing a group of formula or a group of formula / ] ⁇ 'a '
- W represents a group of formula ⁇ vV] r being an integer ranging from 1 to 4 ⁇ W group bonding to the NH group via the bond in dotted lines a ',
- u being an integer ranging from 1 to 4
- n being an integer ranging from 1 to 10
- u being an integer ranging from 1 to 4
- n being an integer ranging from 1 to 10
- W is a group of the formula wherein R is an integer ranging from 1 to 4, the group W binding to the NH group via the dotted bond a ',
- R represents one of the following groups:
- R represents one of the following groups:
- n represents an integer varying from 1 to 10 u representing an integer ranging from 1 to 4 the group R binding to the NH group via the dotted bond a ',
- R is one of the following groups:
- W "W- (Pro) n- W- n representing an integer ranging from 1 to 10 W representing a group of formula the group W binding to the NH group via the dotted bond a ',
- R represents one of the following groups:
- W represents a group of formula V ⁇ r [] 'r being an integer ranging from 1 to 4 W group bonding to the NH group via the dotted bond a'.
- the compounds of the invention are characterized in that R 0 represents a peptide derived from the human or murine CD40 receptor ligand (CD40L), said peptide belonging to the CD40 CD40L ligand primary sequence and from which the number of amino acids is between 3 and 10.
- CD40L CD40 receptor ligand
- the compounds of the invention are characterized in that R c represents a peptide derived from the ligand of the human or murine CD40 receptor (CD40L), said peptide belonging to the primary sequence of the ligand
- CD40L and whose number of amino acids is between 3 and 10 chosen from the following sequences (LQWAEKGYYTMSNN (human sequence SEQ ID NO: 1); LQWAICKGYYTMKSN (murine sequence SEQ ID NO: 2); PGRFERILLRAANTH (human sequence SEQ ID NO: 3); SIGSERILLKAANTH (murine sequence SEQ ID NO: 4).
- R 0 represents a group of formula HX a - (Xb) iX c - Xd - Xe - (Xf) i - or H - XVL - XVX c - X d -X e - (Xf) i-, wherein:
- I 0 or 1
- X a is selected from the following amino acid residues:
- N- (4-aminobutyl) -glycine - NH 2 - (CH 2 ) n -COOH, n varying from 1 to 10;
- Xb is selected from the following amino acid residues:
- alkyl group being a methyl, ethyl or benzyl group
- R representing H, Me, Et, Pr or Bu
- k 1, 2, 3 or 4;
- X 0 is chosen from the following amino acid residues:
- DOPA 3,4-dihydroxy-phenylalanine
- Xe is selected from the following amino acid residues:
- trans-4-aminocyclohexanecarboxylic acid cis-4-aminocyclohexanecarboxylic acid
- Xf is selected from the following amino acid residues:
- trans-4-aminocyclohexanecarboxylic acid cis-4-aminocyclohexanecarboxylic acid
- X ' a represents the side chain of lysine, arginine or ornithine
- X'b represents the side chain of one of the following amino acid residues:
- N-alkylated natural amino acids the alkyl group being a methyl, ethyl or benzyl group; acyclic dialkyl amino acids of the following formula:
- R representing H, Me, Et, Pr or Bu
- X is especially chosen from the following groups:
- Xb is in particular chosen from the following groups :
- X c and Xd are in particular chosen from the following groups:
- X e and X f are in particular chosen from the following groups
- the present invention also relates to compounds of formula (I) as defined above, characterized in that Y corresponds to the following formula (II):
- - A represents an amino acid residue or an amino acid derivative chosen indifferently from:
- B 1 is an amino acid residue or an amino acid derivative independently selected from:
- Ra representing the chain of a proteinase amino acid, C1 -C8 alkylated; B is independently selected from the following groups: the link c represents the bond to the group X,
- n 0, 1, 2 or 3;
- . p is 0, 1, 2 or 3;
- Rb represents an alkyl chain comprising from 1 to 6 carbon atoms
- the compounds of the invention are compounds of formula (I) as defined above in which Y corresponds to one of the following formulas:
- Ra, R c , D, D ', Xg, q, i and p being as defined above.
- the preferred compounds according to the invention are compounds corresponding to one of the
- R c and m being as defined above.
- the compounds of the invention are characterized in that R c is chosen from one of the following groups:
- the present invention also relates to a compound as defined above of
- n 1, 2 or 6;
- R 0 represents an H-Lys-Gly-Tyr-Tyr-NH- (CH 2 ) 5 -CO- group.
- the present invention also relates to a pharmaceutical composition characterized in that it comprises, as active substance, a compound of formula (I) as defined above, in association with a pharmaceutically acceptable vector.
- the present invention also relates to a vaccine composition characterized in that it comprises, as active substance, a compound of formula (I) as defined above, in combination with a pharmaceutically acceptable adjuvant.
- the present invention also relates to the use of compounds as defined above, for the preparation of a medicament for the treatment of pathologies involving the inhibition or activation of the immune response.
- the immune response must be inhibited during inflammatory diseases (inflammatory rheumatism), autoimmune diseases, hypersensitivity reactions in general and allergies in particular, rejection of grafts, graft-versus-host reactions.
- inflammatory diseases inflammatory rheumatism
- autoimmune diseases hypersensitivity reactions in general and allergies in particular, rejection of grafts, graft-versus-host reactions.
- the immune response must be activated in vaccinations in general, in cancer immunotherapy, in bacterial or viral diseases inducing immunosuppression (measles, AIDS, herpes virus, cytomegalovirus ...), in the treatment of diseases. viral bacterial or involving unconventional infectious agents (prions) in people with primary or secondary immunodeficiency.
- the present invention also relates to the use of compounds as defined above, for the preparation of a medicament for the treatment of pathologies involving the inhibition of the immune response, such as graft rejection, allergies or diseases. autoimmune.
- the present invention also relates to the use as defined above, for the preparation of a medicament for the treatment of pathologies involving the increase of the immune response, such as cancers or parasitic, bacterial, viral or involving infections.
- autoimmune diseases such as diabetes, multiple sclerosis, systemic lupus erythematosus or rheumatoid arthritis
- transplant rejection especially in the context of allografts, xenografts or graft-versus-host reactions, as well as hypersensitivity reactions such as allergies, including hay fever and atopic dermatitis, or granulomas.
- the compounds according to the present invention used in the context of the inhibition of the immune response, can be administered intravenously, via the mucous (oral, aerial, nasal, vaginal), subcutaneous, intradermal or epicutaneous routes.
- the present invention also relates to a pharmaceutical composition, characterized in that it comprises a compound according to the present invention, for the treatment of pathologies involving the inhibition of the immune response, which compound is present in the pharmaceutical composition in amounts such that it can be administered at a rate of about 100 ng to about 5 mg per day per individual.
- the present invention also relates to the use as mentioned above, for the preparation of a medicament for the treatment of pathologies involving the increase of the immune response, such as cancers or parasitic, bacterial, viral or involving infections.
- Cases involving activation of the immune response include vaccinations in general, including vaccines against influenza or against childhood diseases, cancer immunotherapy, particularly in the context of melanoma or metastatic cancer, or bacterial diseases immunosuppressive diseases, especially in the context of measles, AIDS, herpes or cytomegalovirus, or vaccines for people with primary or secondary immunodeficiency.
- the compounds according to the present invention used in the context of the activation of the immune response, can be administered intravenously, by the mucous (oral, aerial, nasal, vaginal) routes, subcutaneously, intradecnically or epicutaneously .
- the present invention also relates to a pharmaceutical composition, characterized in that it comprises a compound according to the present invention, for the treatment of pathologies involving the activation of the immune response, which compound is present in the pharmaceutical composition in amounts such that it can be administered at a rate of about 100 ng to about 5 mg per day per individual.
- the present invention also relates to a process for the preparation on a solid support of a compound of formula (I) as defined above, said process being characterized in that it comprises the following steps: the formation of a linear precursor of Y as defined above, which precursor consists of a chain of amino acids forming a growing peptide chain, synthesized by successive cycles of coupling between amino acid residues N-protected, three of which carry a amino group, and the amine function of the growing peptide chain, and deprotection, the first amino acid residue being attached to a solid support, said Y linear precursor comprising at least one D-Alanine residue, said residue D-Alanine being substituted with a D-Lysine residue whose ⁇ -NH amine has been acylated by a carboxylic acid carrying the desired function corresponding to group X as defined herein -above,
- the present invention also relates to a process for the preparation as defined above of a compound of formula (III-a) or (III-b), said process being characterized in that it comprises the following steps:
- GP representing a protecting group especially chosen from: Boc, Z or Alloc, X 'representing a group -SH or
- Figure 1 shows the synergism between L1 (see formula below) and the anti-CD40 agonist antibody 3/23.
- the y-axis represents the uptake of 3 H-thymidine in cpm.
- Figure 2 shows the HPLC profile of the 1,3-dipolar reaction between macrocycle IV.23 and IV.15 diazide under the conditions of entry 6 and after treatment with TFA. (HPLC: linear gradient, 5-65% B, 20 min).
- Figure 3 shows the HPLC profile of the 1,3-dipolar reaction between macrocycle IV.23 and IV.14 diazide under inlet conditions and after TFA treatment. (HPLC: linear gradient, 5-65% B, 20 min).
- FIG. 4A represents the HPLC profile of the crude reaction product of the coupling reaction between the dimerized macrocycle IV.25 and protected pentapeptide P1 after treatment with TFA.
- Figure 4B shows the HPLC profile of ligand L41 after purification by preparative HPLC. (HPLC: linear gradient, 5-65% B, 20 min).
- Figure 4C shows the MALDI-TOF profile of ligand L41 (expected mass: 5529).
- Figures 5A and 5B show apoptosis induction of RAJI cells of Burkitt lymphoma and proliferation of B cells by L1 and L41.
- the white columns correspond to the ligand L41 and the black columns to the ligand L1.
- the ordinate axis represents the percentage of specific apoptosis and the abscissa represents the ten ligand concentration in ⁇ M.
- the results correspond to the average of three independent +/- SD experiments.
- the ordinate axis represents the stimulation index corresponding to the cpm obtained in the cultures with CD40L analogues divided by the cpm obtained in cultures without CD40L analogues and the abscissa axis represents the concentration of each CD40L analog (L1 and L41) in ⁇ M.
- the white squares correspond to the ligand L41 and the black squares to the ligand L1.
- the degree of oligomerization required for signal transduction is different: some are activated by the homotrimeric ligand in soluble form while others are activated only by the homotrimeric membrane ligand.
- TWEAK, TNF and BAFF ligands are active in soluble forms.
- activation by FasL, TRAIL, CD40L or CD30L requires the recruitment of two or more spatially similar homotrimers (Holler, N .; Tardivel, A., Kovacsovics-Bankowski, M., Hertig, S., Gaide, O. Martinon,
- the minimum signaling unit corresponds, not to one, but to several hexameric complexes close to each other.
- the enhancer may be an anti-receptor monoclonal antibody (eg, anti-CD40 mAb) acting synergistically with the soluble ligand (Pound, JD, Challa, A, Holder, MJ; , RJ, Dower, SK, Fanslow, WC, Kikutani, H., Paulie, S. Gregory, CD, Gordon, J. Immunol Int 1999, 11, 11-20, Schneider, P., Holler, N.
- an anti-receptor monoclonal antibody eg, anti-CD40 mAb acting synergistically with the soluble ligand (Pound, JD, Challa, A, Holder, MJ; , RJ, Dower, SK, Fanslow, WC, Kikutani, H., Paulie, S. Gregory, CD, Gordon, J. Immunol Int 1999, 11, 11-20, Schneider, P., Holler, N.
- Bodmer JL, Hahne, M, Frei, K., Fontana, A., Tschopp, JJ Exp Med 1998, 187, 1205-1213
- an anti-Flag monoclonal antibody allowing oligomerization of the recombinant ligand fused with a Flag peptide (Haswell, LE, Glennie, MJ, Al-Shamkhani, A. Ew, J. Immunol 2001, 31, 3094-3100).
- the second strategy is to construct fusion proteins consisting of several copies of the ligand.
- Jorg Tschopp's group at the University of Lausanne has built a molecule in which FasL or CD40L is fused to the collagen domain of the ACRP30 protein.
- This protein a member of the superfamily of CIq, has a particular geometry and two homotrimeric heads which make it possible to associate by fusion two homotrimeric domains on the same molecule.
- Haswell et al. has described a molecule capable of presenting four homotrimers of CD40L.
- the inventors have sought to develop the design of molecules making it possible to present at least two copies of the homotrimeric CD40L mimicking synthetic ligand.
- the idea is to demonstrate an amplifying effect resulting from the oligomerization of the ligand and to identify the minimal entity that makes it possible to induce proliferation of B lymphocytes. For this purpose, it has been chosen to synthesize dimers of the synthetic ligands. . DIMERIZATION OF SYNTHETIC LIGANDS. 1) General retrosynthetic approach
- the dimerized molecules are synthesized from two trimeric architectures of cyclo-D, L- ⁇ -peptide type connected to each other by means of an n-alkyl or polyethylene glycol spacer arm.
- two approaches have been considered: one uses thiol chemistry (Michael addition reaction of a thiol on a maleimide) and the other the "click chemistry", a cycloaddition reaction [3 +2] dipole (or Huisgen reaction) between an alkyne and an azide.
- the introduced link is a thioether
- the click chemistry approach generates a 1,4-disubstituted 1,2,3-triazole bond.
- the general strategy used is based on the synthesis of a D-L- ⁇ -peptide macrocycle on which a functionalized group is attached: either a true alkyne in the case of the click chemistry approach or a thiol group in the case of the second approach according to the following scheme:
- This functionalized cycle is prepared according to the following strategy: one of the three D-Alanine residues is substituted, at the time of preparation of the peptide precursor, with a D-Lysine residue whose ⁇ NH amine has been acylated beforehand with a carboxylic acid carrying the desired functionality.
- This spacer arm is prepared from the corresponding diamine by reaction with N- (methylcarbonyl) maleimide in a mixture of THF and saturated sodium hydrogencarbonate solution
- the desired product is obtained by simple washing, without further purification.
- the protection of the thiol derivative of 3-mercaptopropanoic acid by the acetamide protecting group is carried out in trifluoroacetic acid in the presence of N- (hydroxymethyl) acetamide (Phelan, JC, Skelton, NJ, Braisted, AC McDowell, RSJ Am Chem Soc 1997, 119, 455-460).
- the IV.2 acid is then coupled to the 6 NH-amine of the suitably protected D-Lysine derivative IV.4.
- the compound obtained, IV.5 is then deprotected from these groups Fmoc and benzyl ester. Then, the N-terminal part of the zwitterion thus formed is again protected by an Fmoc group in order to obtain the precursor IV.7 necessary for the assembly of the linear peptide for the purpose of macrocyclization.
- This monomer containing a protected thiol group is then incorporated during the solid support synthesis of linear hexapeptide IV.8.
- the synthesis is carried out from the 2-chlorotrityl chloride resin according to the Fmoc strategy as illustrated below:
- Macrocycle IV.10 thus obtained is coupled to the protected pentapeptide Boc-Lys (Boc) -Gly-Tyr (OtBu) -Tyr (OfBu) -AhX-OH Pl in the presence of BOP without further purification to yield the fully protected trimeric ligand.
- the protective groups Boc and tBu as well as the mAb are eliminated in the same step
- the acetamide group can be removed under different conditions which for some are orthogonal to the Boc / ffiu protective group removal conditions.
- an acidic medium Hg [OAc] 2 in a pH 4 buffer solution
- silver salts eg CF 3 SO 3 Ag in the presence of anisole in trifluoroacetic acid
- Michael addition reaction between the thiol ligand and the bismaleimide spacer arm
- the Michael addition reaction is carried out in a water / acetonitrile mixture.
- a solution of bismaleimide IV.1 (1 eq.) In acetonitrile is added to a solution of L38 ligand (3 eq) in water.
- L38 ligand 3 eq
- the Michael addition reaction is simple to implement since it requires only to dissolve the ligand functionalized with a thiol group and the bismaleimide spacer arm in a water / acetonitrile mixture.
- PH adjustment pH ⁇ 7
- Purification of the crude reaction by preparative HPLC makes it possible to obtain the dimerized ligand.
- difficulties of purification of the dimerization product were encountered when other bismaleimides were used. Indeed, this reaction was also carried out from a bismaleimide spacer arm of polyethylene glycol IV.ll type.
- This copper-catalyzed reaction allows a wide variety of conditions, be it at the solvent, the pH or even the copper source.
- the reaction is carried out using Cu (SO 4 ) 5H 2 O which is reduced in situ by a reducing agent such as sodium ascorbate or ascorbic acid.
- a source of copper I CuI, CuBr, CuOTfC 6 H 6 Certainly can be directly used. In this case, the reaction is more sensitive to oxidation, and the formation of by-products is sometimes observed.
- the reaction In order to avoid these parasitic reactions, the reaction must be protected from air and a base such as 2,6-lutidine must be added.
- the Meîda ⁇ group describes the use of copper salts I (CuI) for the solid phase preparation of 1,4-triazole peptides from organic azides and an alkyne attached to it. end of a peptide-resin (Tornoe, CW, Christensen, C. Meldal, MJ Org Chem 2002, 67, 3057-3064). As in solution, this reaction tolerates all kinds of solvents (acetonitrile, N, N-dimethylformamide, toluene, dichloromethane) and provides easy access in excellent purities to the desired triazole peptide.
- solvents acetonitrile, N, N-dimethylformamide, toluene, dichloromethane
- the diazoture spacer arms are prepared in two stages from the corresponding polyethylene glycol chains as follows:
- the diol is first converted to dimestylate and this is then substituted by the addition of sodium azide.
- the preparation of the D, L- ⁇ -peptide macrocycle begins with the synthesis of the D-Ly sine derivative IV.21 incorporating the true and suitably protected alkyne function for use in peptide synthesis on a solid support.
- the HPLC profile of the cyclization reaction carried out using the coupling reagent EDCHCl shows a fine peak corresponding to the deprotected macrocycle IV.24, but this is accompanied by a large mass corresponding to polymerization products. . Even if the dilution of the reaction medium has made it possible to increase the purity of the macrocycle, the reaction yield with this coupling reagent remains very low.
- the "click chemistry" reaction was first considered from the deprotected ligand (L40) or not (L40 ') of these protective groups.
- the reactivity tests were carried out with diazide IV.15.
- Table 2 summarizes the experimental conditions used.
- the progress of the reaction is monitored by analytical HPLC either by direct injection of the reaction crude in the case of experiments carried out on the deprotected ligand (L40), or after treatment with prior to trifluoroacetic acid in the case of reactions carried out from the protected ligand (L40 ').
- L40 deprotected ligand
- L40 ' the low solubility of ligand L40 'makes its analysis in reverse phase HPLC and direct monitoring of the dimerization reaction by "click chemistry" difficult.
- the corresponding ligands L41 to L43 were then prepared by coupling the dimerized macrocycles and the protected pentapeptide Boc-Lys (Boc) -Gly-Tyr (OtBu) -Tyr (OtBu) -Ahx-OH (P1), deprotection of the protective groups and purification by preparative HPLC.
- the coupling reaction is carried out in two days.
- the reaction requires one week stirring at room temperature to arrive at completion. Stopping the reaction after only three days shows the presence of several intermediate products resulting from partial coupling of the pentapeptide on the available ⁇ NH amines.
- Spleens were taken from BALB / c mice aged 5-12 weeks.
- Splenic B cells were prepared by positive selection using magnetic beads coated with an anti-CD19 monoclonal antibody (MACS, Milteny Biotech, Germany). This fraction contains more than 95% of B220 + cells.
- B cells (3 ⁇ 10 6 / ml) were then cultured on RPMI 1640 medium enriched with 10% decompleted FBS, gentamicin (10 ⁇ g / ml), 25 mM Hepes and 10 ⁇ M ⁇ -mercaptoethanol. in the presence of CD40L analogues.
- the cells were pulsed with 1 ⁇ Ci / well of tritiated thymidine (ICN, Irvine, CA) during the last 20 h of culture and the [H] -thymidine uptake expressed in cpm was measured after 72 h using a direct counter.
- Matrix 9600 beta (Packard, Meriden, CT).
- the results (FIG. 5B) are expressed as a stimulation index corresponding to the cpm obtained in cultures with CD40L / cpm analogues obtained in cultures without CD40L analogues.
- the mice used in this study were raised in our pet stores which are approved by the French veterinary services under number D-67-482-2.
- Burkitt's lymphoma was cultured on RPMI 1640 medium (Cambrex Bioscience, Verviers, Belgium) enriched with 10% decomplemented fetal bovine serum (FBS) and gentamicin (10 ⁇ g / mL).
- FBS fetal bovine serum
- gentamicin 10 ⁇ g / mL
- cells (1x10 / ml) were incubated at 37 ° C in 96-well plates, at the indicated concentrations of CD40L analogs, in a final volume of 200 ⁇ L. After 16 hours of incubation, the apoptosis of the cells was measured as described below.
- Apoptosis was evaluated by measuring the decay of the mitocliondrial transmembrane potential ( ⁇ m ) associated with the reduction of cationic dye uptake, 3,3'-dihexyloxacarbocyanine iodide (DiOC 6 (3)), as demonstrated by flow cytometry (Zamzami et al., J. Exp Med 1995, 191: 1661).
- ligand L41 a dimeric ligand resulting from synthesis by "click chemistry" induces a percentage of apoptosis specific to Burkitt's lymphomas.
- this ligand induces only the proliferation of murine splenic B cells whereas the monomeric ligand L1 did not do so without potentiation with the anti-CD40 3/23 antibody (FIG. 5B).
- Fmoc-D-Lys (Acm) -OH (IV.7)
- Compound IV.6 (2.21 g, 7.2 mmol) is dissolved in a solution of H 2 O (50 mL) with K 2 CO 3 ( 2 g, 14.4 mmol).
- FmocXaaOH (5 eq.) Is coupled twice at room temperature for 30 min to the Fmoc-deprotected resin in the presence of BOP (5 eq.), HOBt (1-hydroxybenzotriazole) (5 eq.) And DIEA (15 eq.) .
- Compound IV.7 (2.5 eq) is coupled once at room temperature for 2 h in the presence of BOP (2.5 eq.), HOBt (2.5 eq.) And DIEA (10 eq.).
- the peptide is cleaved from the resin with a mixture of HFIP (hexafluoroisopropanol) and CH 2 Cl 2 (60/40).
- Triethylene glycol (2 g, 13.31 mmol) is dissolved in
- Fmoc-D-Lys (Nps) -OH (IV.21) Compound IV.20 (972 mg, 3.43 mmol) is dissolved in a mixture of water and acetone (50 mL, v / v: 1 / 1). K 2 CO 3 (948 mg, 6.86 mmol) in water (25 mL) is added. Then Fmoc-OSu (9-fluorenylmethyloxycarbonyl-N-hydroxysuccinimide) (1.16 g, 3.43 mmol) was added slowly in acetone.
- the resin is reinflated in methanol with stirring for 1 h and is then washed with DMF, isopropanol, CH 2 Cl 2 , diethyl ether and dried under vacuum.
- FmocXaaOH (5 eq) is coupled twice at room temperature for 30 min to the Fmoc-deprotected resin in the presence of BOP (5 eq.), HOBt (5 eq.) And DIEA (15 eq.).
- Compound IV.21 (2.5 eq.) Is coupled once at room temperature for 2 hours to the Fmoc-deprotected resin in the presence of BOP (2.5 eq.), HOBt (2.5 eq.) And DIEA (10 eq.).
- the peptide is cleaved from the resin with a mixture of HFIP and CH 2 Cl 2 (60/40).
- Peptide IV.22 (60 mg, 0.054 mmol) is dissolved in DMF (12 mL) at room temperature.
- BOP 28.6 mg, 0.064 mmol
- DIEA 14 ⁇ L, 0.081 mmol
- the reaction mixture is precipitated in a large amount of saturated NaHCO 3 .
- the precipitate is filtered and washed with saturated NaHCO 3 , then with water, 1N KHSO 4 , brine, ethyl acetate, acetonitrile and cyclohexane.
- the heart IV.24, IV.25 or IV.26 (1 eq.) Is dissolved in DMF. At room temperature, the peptide (6.6 eq.), BOP (6.6 eq.) And DIEA (20 eq.) Are added. The reaction mixture is stirred for one week and precipitated in a large amount of saturated NaHCO 3 . The precipitate is filtered and washed with saturated NaHCO 3, then water, KHSO 4 IN, brine and cyclohexane. The solid is dried under vacuum.
- the crude product is dissolved in trifluoroacetic acid with 5% water.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0700809A FR2912147B1 (fr) | 2007-02-05 | 2007-02-05 | Nouvelles molecules multimeriques,leur procede de preparation,et leur utilisation pour la preparation de medicaments |
| PCT/FR2008/000129 WO2008110695A1 (fr) | 2007-02-05 | 2008-02-04 | Nouvelles molecules multimeriques, leur procede de preparation, et leur utilisation pour la preparation de medicaments |
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| Publication Number | Publication Date |
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| EP2114998A1 true EP2114998A1 (fr) | 2009-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08761833A Withdrawn EP2114998A1 (fr) | 2007-02-05 | 2008-02-04 | Nouvelles molecules multimeriques, leur procede de preparation, et leur utilisation pour la preparation de medicaments |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100136034A1 (fr) |
| EP (1) | EP2114998A1 (fr) |
| JP (1) | JP2010517984A (fr) |
| CA (1) | CA2676083A1 (fr) |
| FR (1) | FR2912147B1 (fr) |
| WO (1) | WO2008110695A1 (fr) |
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|---|---|---|---|---|
| US8173768B2 (en) * | 2009-07-13 | 2012-05-08 | Centre National De La Recherche Scientifique | Peptides having antimicrobial and neurotrophic activity and uses thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0015426D0 (en) * | 2000-06-24 | 2000-08-16 | Univ Southampton | Method for generating soluble highly multimeric proteins |
| FR2840307B1 (fr) * | 2002-05-30 | 2006-07-07 | Centre Nat Rech Scient | Nouvelles molecules multimeriques, leur procede de preparation, et leur utilisation pour la preparation de medicaments |
| WO2005006949A2 (fr) * | 2003-07-07 | 2005-01-27 | Wagner David H | Methodes de prediction du developpement de maladies auto-immunes et traitement associe |
-
2007
- 2007-02-05 FR FR0700809A patent/FR2912147B1/fr not_active Expired - Fee Related
-
2008
- 2008-02-04 EP EP08761833A patent/EP2114998A1/fr not_active Withdrawn
- 2008-02-04 JP JP2009547729A patent/JP2010517984A/ja active Pending
- 2008-02-04 CA CA002676083A patent/CA2676083A1/fr not_active Abandoned
- 2008-02-04 WO PCT/FR2008/000129 patent/WO2008110695A1/fr not_active Ceased
- 2008-02-04 US US12/525,761 patent/US20100136034A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008110695A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2912147B1 (fr) | 2012-12-21 |
| JP2010517984A (ja) | 2010-05-27 |
| US20100136034A1 (en) | 2010-06-03 |
| CA2676083A1 (fr) | 2008-09-18 |
| WO2008110695A1 (fr) | 2008-09-18 |
| FR2912147A1 (fr) | 2008-08-08 |
| WO2008110695A8 (fr) | 2009-07-16 |
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