Thrombin derived polypeptides; compositions and methods for use

Details Thrombin derived polypeptides; compositions and methods for use Thrombin derived polypeptides; compositions and methods for use

1986-10-31

1994-10-04

Elliott, George C.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Peptide containing doai

530326, 435214, 424 9464, A61K 3702, A61K 37547, C07K 710, C12N 974

Patent

active

053526643

ABSTRACT:
Thrombin is now known to mediate a number of potent biological effects on cells bearing high-affinity thrombin receptors. These effects depend, at least in part, upon receptor occupancy signals generated by thrombin's interaction with the high affinity thrombin receptor. The present inventors have formulated synthetic thrombin derivatives capable of selectively stimulating or inhibiting thrombin receptor occupancy signals. The stimulatory thrombin derivatives to bind to cell surface thrombin receptors and stimulate DNA synthesis in cells treated with non-mitogenic concentrations of alpha-thrombin or phorbol myristate acetate. Thus, these peptides, which have both a thrombin receptor binding domain and a segment of amino acids with a sequence common to a number of serine proteases, appear to generate receptor-occupancy dependent mitogenic signals. The inhibitory derivatives, which have no serine esterase conserved amino acid sequences bind to thrombin receptors without generating receptor-occupancy dependent mitogenic signals. This invention describes the peptides and methods for using them to promote cell growth and wound healing or to inhibit scar formation, tissue adhesions, and tumor metastasis and angiogenesis.

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