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:
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:
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 CD11b 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 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 CD11b 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 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 CD11b 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 invention relates to modified Bordetella adenylate cyclase toxins which are deficient for CD11b/CD18 binding and to their use in the preparation of pharmaceutical composition for the treatment of whooping cough and/or for the protection against Bordetella infection. The invention also relates to specific fragments of Bordetella adenylate cyclase comprising the CD11b/CD18 interaction domain and their use, especially for targeting a molecule of interest to CD11b expressing cells.
摘要:
The invention relates to modified Bordetella adenylate cyclase toxins which are deficient for CD11b/CD18 binding and to their use in the preparation of pharmaceutical composition for the treatment of whooping cough and/or for the protection against Bordetella infection. The invention also relates to specific fragments of Bordetella adenylate cyclase comprising the CD11b/CD18 interaction domain and their use, especially for targeting a molecule of interest to CD11b expressing cells.
摘要:
The invention relates to a novel use of a Bordetella adenylcyclase toxin in the manufacturing of vectors for targeting in vivo a molecule of interest, specifically to CD11b expressing cells. The invention also relates to an immunogenic composition that primes immune responses, to pharmaceutical compositions, and to a new vector for molecule delivery to CD11b expressing cells.
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:
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.