Mhc complexes and uses thereof

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/62 (2006.01) A61K 31/70 (2006.01) A61K 35/12 (2006.01) A61K 38/17 (2006.01) A61K 39/00 (2006.01) A61K 47/48 (2006.01) A61K 48/00 (2006.01) C07K 14/705 (2006.01) C07K 14/74 (2006.01) C07K 14/77 (2006.01) C07K 16/00 (2006.01) C07K 19/00 (2006.01) C12Q 1/02 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2196085

The present invention relates to novel complexes of major histocompability complex (MHC) molecules and uses of such complexes. In particular, the invention relates to MHC fusion complexes that contain an MHC molecule with a peptided-binding groove and a presenting peptide covalently linked to the MHC protein. Fusion complexes of the invention are useful for a variety of applications including in vitro screens for identification and isolation of peptides that modulate activity of selected T cells, including peptides that are T cell receptor antagonists and partial agonists, methods of suppressing an immune response of a mammal and methods for inducing an immune response in a mammal.

La présente invention concerne de nouveaux complexes à molécules du complexe majeur d'histocompabilité (HLA) et des applications de tels complexes. L'invention se rapporte notamment à des complexes de fusion de l'HLA qui contiennent une molécule de l'HLA comportant une gorge à liaison peptidique et un peptide de présentation fixé de manière covalente sur la protéine de l'HLA. Les complexes de fusion selon l'invention sont destinés à être utilisés dans diverses applications y compris les cribles in vitro permettant d'identifier et d'isoler les peptides qui modulent l'activité des lymphocytes t, en particulier, les peptides constituant les antagonistes des récepteurs des lymphocytes T et des agonistes partiels. L'invention se rapporte également à des procédés destinés à supprimer la réponse immunitaire chez un mammifère et à des procédés destinés à induire une réponse immunitaire chez un mammifère.

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