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Junker, J.L. et al.

Transformation-associated increase of adhesion, cellular fibronectin, and stress fiber development in a liver epithelial cell line.

Cytoskeletal and adhesion characteristics of DL-ethionine (CAS: 67-21-0)-transformed rat liver epithelial cells (ETC) were compared with those of nontumorigenic, untreated cells of the same cell line both at the same passage level as ETC and at an early low passage level. ETC and high-passage-level cells (HPC) showed increased cell spreading and prominent actin stress fibers compared to low-passage-level cells (LPC). The number of adhesion plaques per unit cell area was higher for ETC than for LPC. At confluence, fibronectin expression was high for ETC, moderate for HPC, and low for LPC. The observed increases in cell spreading and in actin and fibronectin expression appeared to be associated with transformation of this cell line rather than being specific responses to ethionine treatment. This conclusion is suggested by the fact that HPC, which display preneoplastic markers, are similar in many respects to ETC.[1]

References

Transformation-associated increase of adhesion, cellular fibronectin, and stress fiber development in a liver epithelial cell line. Junker, J.L., Cottler-Fox, M., Wilson, M.J., Munoz, E.F., Heine, U.I. J. Natl. Cancer Inst. (1985) [Pubmed]

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