Degradation of mutant and wild-type p53 by dicoumarol but not by other
antiapoptotic agents such as IL-6 or thapsigargin. M1-t-p53
cells were cultured for 6 h without (−) or with 10 nM
thapsigargin, 50 ng/ml IL-6, or 100 μM dicoumarol.
(A) At 32°C, when p53 behaves like wild type.
(B) At 37°C, when p53 behaves like a mutant.
Immunoblot analysis was carried out with Pab 240 monoclonal anti-p53
antibody. The blots were then stripped and re-probed with anti-IκB
and anti-β-tubulin antibody. Dic., dicoumarol.