Alteration in the behavior of a colon carcinoma cell line by extracellular matrix components

Douglas Boyd, Germaine Florent, Karla Childress-Fields, Michael G. Brattain

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


It was previously demonstrated that substrata derived from well differentiated colon carcinoma cell lines induced a more benign program in a separate malignant colon cell line, MOSERaf. This study attempts to define a role for extracellular matrix components in the biological events of MOSERaf cells. Alterations in morphology, secreted carcinoembryonic antigen (CEA) and urokinase brought about by individual components were determined. Laminin induced similar changes to colon-derived substrata in that there was increased cell attachment and spreading, a 4-fold elevation in CEA and a 45% reduction in urokinase. Fibronectin stimulated cell attachment without altered morphology and reduced the amount of plasminogen activator. CEA values, however, remained unchanged. Growth of MOSERaf cells on all types of collagen failed to elicit any change in cell shape or CEA. However, type I III collagen raised urokinase levels by 40%. Transforming growth factor β (TGF-β) induces cellular laminin and fibronectin, promotes cell attachment, and spreading, elevates CEA and diminishes urokinase. These data argue for a role for laminin and possibly fibronectin in the governing of biological events culminating in a more mature colon cell.

Original languageEnglish (US)
Pages (from-to)81-90
Number of pages10
JournalCancer Letters
Issue number1
StatePublished - Jul 1988
Externally publishedYes


  • Carcinoembryonic antigen
  • Colon carcinoma cell line
  • Extracellular matrix components
  • Laminin

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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