Polypeptides for promoting cell attachment

Abstract

Novel polypeptides derived from human fibronectin, and fusion proteins containing those peptide sequences are described which define a receptor binding site on fibronectin that binds to the platelet receptor glycoprotein GPIIb-IIIa expressed by cells. The receptor binding site of human fibronectin includes at least fibronectin amino acid residues 1410-1436. The polypeptides facilitate attachment of cells to substrates either alone or in conjunction with RGD-containing peptides. Vectors preparing the fusion proteins and antibodies are also described. Methods for promoting cell attachment and for inhibiting cell adhesion are also described.

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