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Vitale, M. et al.

Vitale, Di Matola, Bifulco, Casamassima, Fenzi, Rossi,

Apoptosis induced by denied adhesion to extracellular matrix (anoikis) in thyroid epithelial cells is p53 dependent but fails to correlate with modulation of p53 expression.

In normal epithelial cells, impaired cell-matrix contact leads to induction of programmed cell death, a process that has been termed 'anoikis'. We investigated the role of p53 and other apoptotic proteins in anoikis in thyroid epithelial cells. Western blot analysis demonstrated that neither p53 nor Bcl-2, Bcl-XL and Bax protein expression changed during anoikis. However, loss of endogenous p53 activity in cells transfected with a dominant-negative mutated p53 inhibited anoikis demonstrating the involvement of p53-dependent processes. The phosphatase inhibitor sodium orthovanadate opposed anoikis when added to the cells within 6 h, suggesting a role for phosphorylated proteins.[1]

References

Apoptosis induced by denied adhesion to extracellular matrix (anoikis) in thyroid epithelial cells is p53 dependent but fails to correlate with modulation of p53 expression. Vitale, M., Di Matola, T., Bifulco, M., Casamassima, A., Fenzi, G., Rossi, G. FEBS Lett. (1999) [Pubmed]

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