title: Procollagen I synthesis in human skin fibroblasts: effect on culture conditions on biosynthesis.
abstract: Human skin fibroblast culture promises to be a useful system for the investigation of the regulation of collagen biosynthesis and the study of abnormalities in collagen biosynthesis in connective tissue disorders. The effect of culture conditions on procollagen I biosynthesis has been determined. Optimal conditions for collagen biosynthesis were: 10% dialyzed heat-inactivated fetal calf serum, 0.15 mM ascorbate, and 0.078 mM beta-aminopropionitrile. Newly synthesized procollagen I accumulated in the medium at a linear rate for 18 hr. Preincubation of cells in labelling media for 4 hr before adding radioactive proline enhanced synthesis. Collagenase digestion was used to study overall collagen biosynthesis. 94% of all collagen synthesized was found in the medium, and 6% in the cell pellet. Under optimal conditions, collagen comprised 24% of all protein in the medium, and 14% of protein produced by the whole culture.
mesh_terms: D000293:Adolescent; D000328:Adult; D002478:Cells, Cultured; D003094:Collagen / Q000096:biosynthesis; D005260:Female; D005347:Fibroblasts / Q000378:metabolism; D006801:Humans; D008297:Male; D011347:Procollagen / Q000096:biosynthesis*; D012867:Skin / Q000378:metabolism*
chemical_list: D011347:Procollagen; D003094:Collagen