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Articles by C Paisie
Total Records ( 1 ) for C Paisie
  Y Wu , X Feng , Y Jin , Z Wu , W Hankey , C Paisie , L Li , F Liu , S. H Barsky , W Zhang , R Ganju and X. Zou
 

The natural compound indole-3-carbinol (I3C; found in vegetables of the genus Brassica) is a promising cancer prevention or therapy agent. The cell division cycle 25A (Cdc25A) phosphatase is overexpressed in a variety of human cancers and other diseases. In the present study, I3C induced degradation of Cdc25A, arrest of the G1 cell cycle, and inhibition of the growth of breast cancer cells. We also showed that the Ser124 site of Cdc25A, which is related to cyclin-dependent kinase 2, is required for I3C-induced degradation of Cdc25A in breast cancer cells, and that interruption of the ATM-Chk2 pathway suppressed I3C-induced destruction of Cdc25A. Our in vivo studies of different mutated forms of Cdc25A found that the mutation Cdc25AS124A (Ser124 to Ala124), which confers resistance to I3C-induced degradation of Cdc25A, attenuated I3C inhibition of breast tumorigenesis in a mouse xenograft model. The present in vitro and in vivo studies together show that I3C-induced activation of the ATM-Chk2 pathway and degradation of Cdc25A represent a novel molecular mechanism of I3C in arresting the G1 cell cycle and inhibiting the growth of breast cancer cells. The finding that I3C induces Cdc25A degradation underscores the potential use of this agent for preventing and treating cancers and other human diseases with Cdc25A overexpression. Cancer Prev Res; 3(7); 818–28. ©2010 AACR.

 
 
 
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