Pathogenic escherichia coli associated protein

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/31 (2006.01) A61K 39/108 (2006.01) C07K 14/245 (2006.01) C07K 16/12 (2006.01) C07K 19/00 (2006.01) C12N 1/21 (2006.01) C12N 1/36 (2006.01) C12N 15/62 (2006.01) C12Q 1/68 (2006.01) G01N 33/569 (2006.01) G01N 33/68 (2006.01) A61K 38/00 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2252372

The present invention provides the EspA polypeptide, which is secreted by pathogenic E. coli, such as the enteropathogenic (EPEC) and enterohemorrhagic (EHEC) E. coli. Diagnosis of disease caused by such pathogenic E. coli can be performed by standard techniques, such as those based upon the use of antibodies which bind to EspA to detect the protein, as well as those based on the use of nucleic acid probes for detection of nucleic acids encoding EspA protein. The invention also provides isolated nucleic acid sequences encoding EspA, EspA polypeptide, EspA peptides, a method for producing recombinant EspA, antibodies which bind to EspA, and a kit for the detection of EspA- producing E. coli. The invention also provides a method of immunizing a host with EspA to induce a protective immune response to EspA.

La présente invention concerne le polypeptide EspA, qui est secrété par l'E.Coli pathogène, tel que l'E.Coli entéropathogène (EPEC) et entérohémorragique (EHEC). Le diagnostic de la maladie provoquée par cet E.Coli pathogène peut être effectué par des techniques standards, telles que celles fondées sur l'utilisation d'anticorps qui se lient à l'EspA pour détecter la protéine, ainsi que celles fondées sur l'utilisation de sondes d'acide nucléique pour la détection d'acides nucléiques codant la protéine EspA. L'invention a aussi pour objet des séquences d'acide nucléique isolées codant le gène EspA, le polypeptide EspA, les peptides EspA, ainsi qu'un procédé pour produire un EspA de recombinaison, des anticorps qui se lient au gène EspA, et un kit pour la détection de l'E.Coli produisant le gène EspA. L'invention concerne aussi un procédé pour immuniser un hôte par le gène EspA pour induire une réponse immunitaire de protection contre ce gène.

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