title: Synthetic activities of mass cultures and clones of human gingival fibroblasts.
abstract: The percentage of synthesis dedicated to collagen is elevated in low-density cultures of human gingival fibroblasts, as is per-cell total protein synthetic activity and glycosaminoglycan accumulation. These observations can be explained, in part, by a decrease in membrane transport of precursor substance in high-density cultures. Synthetic activity by human fibroblasts can be reliably assayed in vitro using as few as 500 cells sparsely seeded. Such low-cell number assay is essential for study of single-cell clones, where replicative life span is limited.
mesh_terms: D001692:Biological Transport; D002452:Cell Count; D002455:Cell Division; D002462:Cell Membrane / Q000378:metabolism; D002470:Cell Survival; D002478:Cells, Cultured; D002999:Clone Cells / Q000166:cytology / Q000378:metabolism; D003094:Collagen / Q000096:biosynthesis*; D005347:Fibroblasts / Q000166:cytology / Q000378:metabolism; D005881:Gingiva / Q000166:cytology* / Q000378:metabolism; D006025:Glycosaminoglycans / Q000096:biosynthesis*; D006801:Humans; D007399:Interphase; D011392:Proline / Q000378:metabolism; D014176:Protein Biosynthesis
chemical_list: D006025:Glycosaminoglycans; D003094:Collagen; D011392:Proline