Induction of collagenase secretion in human fibroblast cultures by growth-promoting factors

C. C. Chua, D. E. Geiman, G. H. Keller, R. L. Ladda

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149 Scopus citations


In human foreskin fibroblast cultures two proteins with M(r) 60,000 and 55,000 were found to be induced about 3.5-fold by epidermal growth factor (EGF), platelet-derived growth factor, and β-transforming growth factor. The induced proteins were identified as procollagenases by immunoprecipitation of induced medium with antibodies to purified human fibroblast collagenase. Collagenase enzyme activity in the medium from EGF-treated cultures was also induced at least 3-fold compared to control cultures. Induction of collagenase was dependent upon de novo protein and RNA synthesis and was observed in the medium 10 h after addition of EGF. Although these growth-promoting factors interact with separate membrane receptors, each induced the secretion of a common protein, suggesting that collagenase may be important in some aspect of mitogenesis, cell mobilization, and migration.

Original languageEnglish (US)
Pages (from-to)5213-5216
Number of pages4
JournalJournal of Biological Chemistry
Issue number9
StatePublished - 1985

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Cell Biology


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