Synthetic pentapeptide from the B1 chain of laminin promotes B16F10 melanoma cell migration.

J Cell Physiol

Laboratory of Developmental Biology and Anomalies, NIDR, Bethesda, Maryland 20892.

Published: February 1988

Laminin is a basement membrane-specific glycoprotein that promotes cell adhesion, proliferation, differentiation, and tumor cell migration. Synthetic peptides from the amino acid sequence deduced from a cDNA clone of the B1 chain of laminin were tested for their ability to promote the migration of B16F10 melanoma cells. A peptide, CDPGYIGSR, that is able to mediate epithelial cell attachment to laminin was found to promote migration, and the constituent pentapeptide YIGSR was also active but to a lesser degree. This nine-amino acid peptide blocked migration of melanoma cells to laminin but had no effect on migration to fibronectin. These data suggest that the cell-binding site and migration site on laminin share a common sequence that is unique to laminin.

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http://dx.doi.org/10.1002/jcp.1041340216DOI Listing

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