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Substrate‐dependent differences in production of extracellular matrix molecules by squamous carcinoma cells and diploid fibroblasts
Author(s) -
Varani James,
Fligiel Suzanne E. G.,
Inman Dennis R.,
Helmreich David L.,
Bendelow Matthew J.,
Hillegas William
Publication year - 1989
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260331003
Subject(s) - extracellular matrix , fibronectin , cell culture , laminin , dextran , extracellular , matrix (chemical analysis) , substrate (aquarium) , squamous carcinoma , microbiology and biotechnology , thrombospondin , chemistry , fibroblast , biology , biochemistry , enzyme , carcinoma , ecology , chromatography , metalloproteinase , genetics
Two human squamous carcinoma cell lines and human diploid fibroblasts were examined for the production of extracellular matrix (ECM) molecules including fibronectin (FN), laminin (LN), and thrombospondin (TSP) when grown on a number of different substrates. The substrates used included glass, plastic, collagen (gelatin), and DEAE‐dextran. Levels of TSP as indicated by enzyme‐linked immunosorbent assay did not vary significantly as a function of substrate. In contrast, LN levels in the culture medium were significantly decreased when the cells were grown on DEAE‐dextran or collagen‐linked dextran as compared to the other substrates. FN levels were slightly lower in the culture medium of the cells grown on DEAE‐dextran. Biosynthetic labeling followed by immunoprecipitation indicated that the reduction in LN was due, in part, to decreased biosynthesis. Previous studies have indicated that LN influences the behavior of epithelial cells in culture and that the cells, themselves, are a major source of the LN. The differences in LN production noted here indicate that the production of this ECM component is influenced by the substratum on which the cells are grown. These differences could contribute to alterations in biological properties that are known to be influenced by the substratum.