a serious clinical problem; for example, decubitus and leg ulcers afflict roughly 5 million people in the US alone. Normal wound repair depends on molecules like fibronectin to promote cell adhesion and migration (1). This large adhesive glycoprotein provides a crucial substrate for many forms of cell migration , such as in embryonic migratory pathways and in the provisional matrix of healing w...

The interaction of cells with fibronectin generates a series of complex signaling events that serve to regulate several aspects of cell behavior, including growth, differentiation, adhesion, and motility. The formation of a fibronectin matrix is a dynamic, cell-mediated process that involves both ligation of the alpha5beta1 integrin with the Arg-Gly-Asp (RGD) sequence in fibronectin and binding...

The interaction of cells with fibronectin generates a series of complex signaling events that serve to regulate several aspects of cell behavior, including growth, differentiation, adhesion, and motility. The formation of a fibronectin matrix is a dynamic, cell-mediated process that involves both ligation of the a 5 b 1 integrin with the Arg-Gly-Asp (RGD) sequence in fibronectin and binding of ...

Many integrins recognize short RGD-containing amino acid sequences and such peptide sequences can be identified from phage libraries by panning with an integrin. Here, in a reverse strategy, we have used such libraries to isolate minimal receptor sequences that bind to fibronectin and RGD-containing fibronectin fragments in affinity panning. A predominant cyclic motif, *CWDDG/LWLC*, was obtaine...

Fibronectin contains at least two domains that support cell adhesion. One is the central cell-binding domain that is recognized by a variety of cell types, including fibroblasts. The second, originally identified by its ability to support melanoma cell adhesion, is located in the alternatively spliced type III connecting segment (IIICS). Using specific adhesive ligands and inhibitory probes, we...

Binding curves for the adsorption of plasma fibronectin, alpha-1-antitrypsin, alpha-2-macroglobulin, ceruloplasmin, transferrin and bovine serum albumin to plain and to hydroxylated polystyrene surfaces were measured. These curves were correlated with the adhesion of BHK cells and leucocytes to these adsorbed protein surfaces in protein-free culture media. Hydroxylated polystyrene adsorbed less...

Plasma fibronectin, which is also known as cold-insoluble globulin, consists of two polypeptide chains of approximately 250,000 daltons joined by disulfide bonds located near one end of the molecule. Proteolytic digestion of human plasma fibronectin and NHz-terminal sequence analysis of some of the fragments produced were used to locate the gelatin-binding region of fibronectin within the intac...