Antigenic matrix metalloproteinase peptides

Details Antigenic matrix metalloproteinase peptides Antigenic matrix metalloproteinase peptides

1992-01-31

1994-12-13

Walsh, Stephen G.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Amino acid sequence disclosed in whole or in part; or...

530326, 530806, 530810, 930 10, A61K 37547, C07K 708, C07K 1702

Patent

active

053728092

ABSTRACT:
A family of metalloproteinases exist which cleave extracellular matrix molecules. These metalloproteinases are secreted in a latent inactive form and require activation in order to specifically cleave the preferred substrate. A series of peptides have been prepared based on the complete sequence analysis of type IV procollagenase. Peptide inhibitors were synthesized which correspond to cysteine repeat regions and histidine containing regions; the mechanism of action of these peptides involves inhibition of binding of the enzyme to the substrate. Peptide inhibitors were synthesized which correspond to the peptide cleaved off during activation, and constitute a novel class of metalloproteinase inhibitors. These inhibitors are members of a series of peptides which contain the core amino acid sequence RKPRC or analogs thereof. The cysteine residue is required for activity. Affinity purified antibodies directed against specific peptides can be used to a) detect any general metalloproteinase enzyme with the sequence in part VAAHE or PRCGNPD, and distinguish it from other known members of the metalloproteinase family, b) block functional domains resulting in the inhibition of enzyme activity, and c) distinguish latent from activated forms of the enzyme.

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