Chemokine from niddm pancreas

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/19 (2006.01) A61K 31/70 (2006.01) A61K 38/19 (2006.01) C07K 14/52 (2006.01) C07K 16/24 (2006.01) C12N 15/11 (2006.01) C12Q 1/68 (2006.01) G01N 33/53 (2006.01) A61K 38/00 (2006.01) A61K 48/00 (2006.01)

Patent

CA 2237998

The present invention provides a polynucleotide (mcp-4) which identifies and encodes a novel monocyte chemotactic protein (MCP-4) which was expressed in cells of NIDDM pancreas. The present invention also provides for antisense molecules. The invention further provides genetically engineered expression vectors and host cells for the production of purified MCP-4; antibodies, antagonists and inhibitors which specifically bind MCP-4; and pharmaceutical compositions and methods of treatment based on the polypeptide, its antagonists and inhibitors. The invention specifically provides for use of the polypeptide as a positive control in diagnostic assays which also allow identification of altered mcp-4 expression. These assays utilize diagnostic compositions designed from mcp-4 encoding or complementary polynucleotide sequences, including oligomers, and anti-MCP-4 antibodies.

L'invention concerne un polynucléotide (mcp-4) qui assure l'identification et le codage d'une nouvelle protéine 4 ayant une activité chimiotactique sur les monocytes (MCP-4), exprimée dans les cellules du pancréas d'un sujet à diabète non insulinodépendant sucré. On décrit par ailleurs des molécule antisens, des vecteurs d'expression obtenus par génie génétique ainsi que des cellules hôtes pour la production de MCP-4 purifiées. On décrit aussi des anticorps, des antagonistes et des inhibiteurs assurant spécifiquement la liaison de MCP-4 ainsi que des compositions pharmaceutiques et des procédés de traitement reposant sur le polypeptide considéré, y compris les antagonistes et les inhibiteurs de ce polypeptide. On décrit spécifiquement l'utilisation du polypeptide pour le contrôle positif lié à des tests de diagnostic qui permettent aussi d'identifier l'expression mcp-4 modifiée. Les tests en question font appel à des compositions diagnostiques élaborées à partir de séquences polynucléotidiques à codage mcp-4 ou complémentaires, y compris des oligomères, et à partir d'anticorps anti-MCP-4.

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