摘要:
The invention relates to mutant CyaA/E570Q+K860 polypeptides suitable for use as proteinaceous vectors for delivering one or more molecules of interest into a cell, in particular into a cell expressing the COM receptor. The invention further relates to polypeptide derivatives suitable for eliciting an immune response in a host.The invention is more particularly directed to polypeptides derived from an adenylate cyclase protein (CyaA) either under the form of a toxin or of a toxoid, which are mutant polypeptides. Said mutant polypeptides are capable of retaining the binding activity of native CyaA to a target cell and preferably of also retaining the translocating activity of native CyaA through its N-terminal domain into target cells and furthermore have a pore-forming activity which is reduced or suppressed as compared to that of the native CyaA toxin.
摘要:
The present invention relates to mucin glycoconjugates, and to a process of producing mucin glycoconjugates. It relates to the biological, pharmaceutical and medical applications thereof. The invention notably provides mucin glycoconjugates which do not require a protein carrier, such as KHL, to induce an immune response (anti-Tn IgG).
摘要:
The invention relates to a kit of parts, suitable for use in a therapy of cancer, wherein said kit comprises: (i) a recombinant protein comprising one or several polypeptides bearing one or several epitopes of one or several tumor-associated antigens, said polypeptides being inserted in the same or different permissive sites of an adenylate cyclase (CyaA) protein or of a fragment thereof, wherein said CyaA fragment retains the property of said adenylate cyclase protein to target Antigen Presenting Cells or a mixture of such recombinant proteins wherein at least one of said epitopes, or tumor associated antigens, or insertion sites of CyaA protein, or fragment of said CyaA protein is different between the various recombinant proteins in the mixture; and said kit of parts further comprises at least one of the following compounds; (ii) an agent, suitable for modulating a regulatory immune response in a patient ad optionally; (iii) an adjuvant component suitable for activating the innate immune response in a patient.
摘要:
Diagnostic testing and immunomonitoring that uses genetically detoxified Bordetella pertussis CyaA as a delivery system are effective in tracking any immune responses, such as those generated by infectious and non-infectious diseases, or vaccinations, for example. T cells previously stimulated by a given antigen can be restimulated in vitro by the same antigen fused or chemically coupled to CyaA or a fragment thereof. The invention includes diagnostic tests and immunomonitoring for tuberculosis by providing a delivery system, which can deliver the M. tuberculosis immunodominant proteins ESAT-6 and CFP-10, to human cells and non-human animal cells, such as cattle. In addition, fusion proteins between CyaA and cancer antigens are also provided as diagnostic tests and immunomonitoring systems for cancers, such as melanoma.
摘要:
A carbohydrate peptide conjugate containing: (i) a carrier containing a dendrimeric poly-lysine enabling multiple epitopes to be covalently attached thereto, (ii) at least one peptide containing one T epitope or several identical or different T-epitopes, (iii) at least one carbohydrate moiety which is tumor antigen, or a derivative thereof, containing a B epitope, provided it is not a sialoside, or several identical or different epitopes, wherein said conjugate containing at least 3-lysines and up to 15 lysine covalently linked to one another, and wherein: (a) to the NH2 and of at least two lysine residues is bound at least one carbohydrate residue being not a sialoside, optionally substituted and containing an epitope and wherein the peptide containing one T epitope is covalently bound to the end of said carbohydrate which induces immune responses.
摘要:
The invention concerns the use, in the induction of an immune response, of a synthetic microparticle polymer carrying on the surface one or more covalently bonded proteins capable of carrying one or more epitopes, the molecular weight of the protein(s) on the surface of the microparticles, being adjusted so as to direct the immune response to the induction of a humoral and cellular response or to the induction of a mainly cellular response, said microparticles have an average diameter of approximately 0.25 to 1.5 .mu.m.
摘要:
A polypeptide comprises a mutated Bordetella pertussis CyaA (SEQ ID NO:1), Bordetella parapertussis CyaA (SEQ ID NO:7), Bordetella hinzii CyaA (SEQ ID NO:8), or Bordetella bronchiseptica CyaA (SEQ ID NO:9), or a fragment thereof lacking all or part of the N-terminal catalytic domain of the CyaA, or a polypeptide having at least 95% sequence identity with SEQ ID NOS: 1, 7, 8, or 9. The glutamic acid residue at position 570 of SEQ ID NO: 1, 7, 8 or at position 569 of SEQ ID NO:9 has been substituted by a conservative amino acid residue. The lysine residue at position 860 of SEQ ID NO: 1, 7, 8 or at position 859 of SEQ ID NO:9 has been substituted by a conservative amino acid residue. The polypeptide retains the binding activity of native CyaA to CD11b expressing cell, and has a pore-forming activity which is reduced or suppressed as compared to that of the native CyaA toxin.
摘要翻译:多肽包括突变型百日咳杆菌CyaA(SEQ ID NO:1),百日咳杆菌CyaA(SEQ ID NO:7),Bordetella hinzii CyaA(SEQ ID NO:8)或支气管炎博德特氏菌CyaA(SEQ ID NO:9), 或其缺少CyaA的全部或部分N末端催化结构域的片段,或与SEQ ID NO:1,7,8或9具有至少95%序列同一性的多肽。570位的谷氨酸残基 的SEQ ID NO:1,7,8或SEQ ID NO:9的位置569已被保守的氨基酸残基取代。 SEQ ID NO:1,7,8或SEQ ID NO:9的859位的860位的赖氨酸残基被保守的氨基酸残基取代。 多肽保留天然CyaA与表达CD11b的细胞的结合活性,并且与天然CyaA毒素相比具有减少或抑制的成孔活性。
摘要:
This invention relates to the use of a polypeptide in the production of an immunostimulatory agent, said polypeptide comprising a sequence corresponding to the EDA domain of fibronectin, a fragment of the EDA domain which can bind to TLR4 or a variant of said EDA domain or a fragment which can bind to TLR4 and which has a homology of more than 70% with any form or natural fragment of the EDA domain. The invention also relates to the production methods and applications of said agent.
摘要:
The invention relates to a kit of parts, suitable for use in a therapy of cancer, wherein said kit comprises:(i) a recombinant protein comprising one or several polypeptides bearing one or several epitopes of one or several tumor-associated antigens, said polypeptides being inserted in the same or different permissive sites of an adenylate cyclase (CyaA) protein or of a fragment thereof, wherein said CyaA fragment retains the property of said adenylate cyclase protein to target Antigen Presenting Cells or a mixture of such recombinant proteins wherein at least one of said epitopes, or tumor associated antigens, or insertion sites of CyaA protein, or fragment of said CyaA protein is different between the various recombinant proteins in the mixture; and said kit of parts further comprises at least one of the following compounds; (ii) an agent, suitable for modulating a regulatory immune response in a patient ad optionally; (iii) an adjuvant component suitable for activating the innate immune response in a patient.
摘要:
The present invention relates to a method for preparing carbohydrate T cell epitope conjugates of formula (I): M(T-B)n(I) wherein M, T, B and n are as defined in claim 1.