Promotion of epithelial cell adhesion and hemidesmosome assembly by a laminin-like molecule

摘要

A method for growing epithelial cells in vitro using soluble proteins secreted by 804G and NBT-II rat bladder carcinoma cells. These proteins stimulate cell attachment and hemidesmosome formation in cells grown in contact with the proteins. The protein is purified from conditioned medium by immunoaffinity chromatography using a monoclonal antibody generated against the protein. The purification of these proteins may be facilitated by culturing the cells under low serum or serum free conditions.