Cytokine variant polypeptides

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/52 (2006.01) A01K 67/027 (2006.01) A61K 38/19 (2006.01) A61K 38/27 (2006.01) A61K 48/00 (2006.01) C07K 14/61 (2006.01) C12N 5/10 (2006.01) C12N 15/10 (2006.01) C12N 15/86 (2006.01)

Patent

CA 2568859

We describe modified cytokine ligand polypeptides comprising a modified amino acid sequence which is a modification of the native cytokine amino acid sequence of said ligand, wherein the native amino terminal and carboxyl terminal amino acid residues of the native polypeptide are linked, directly or indirectly, together, characterised in that said ligand is provided with alternative amino terminal and carboxyl terminal amino acid residues and further wherein at least one binding domain for said ligand~s cognate binding partner or receptor complex is disrupted.

L'invention concerne des polypeptides ligands de cytokine modifiés contenant une séquence d'acide aminée modifiée étant une modification de la séquence d'acides aminés de cytokine native dudit ligand, les résidus d'acides aminés natifs à terminaison amino et les résidus d'acides aminés natifs à terminaison carboxyl du polypeptide natif étant liés directement ou indirectement. Les polypeptides selon l'invention sont caractérisés en ce que ledit ligand contient des résidus d'acides aminés à terminaisons amino et carboxyl alternées, et en ce qu'au moins un domaine de liaison du partenaire de liaison ou du complexe récepteur cognat dudit ligand est interrompu.

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