5-Aza-2'-deoxycytidine restores proapoptotic function of p53 in cancer cells resistant to p53-induced apoptosis.

Abstract:

:The expression of p53-target genes encoding the proapoptotic factor Noxa, but not PUMA, was not induced by p53 in HCT116 and SW480 cells, which show resistance to apoptosis in response to p53 overexpression. The lack of p53 inducibility of Noxa was restored by treatment with the DNA methyltransferase inhibitor 5-Aza-2'-deoxycytidine (5-aza-CdR). Furthermore, p53 induced apoptosis in HCT116 and SW480 cells treated with 5-aza-CdR. Moreover, the inhibition of Noxa expression by RNAi in 5-aza-CdR-treated HCT116 cells resulted in the partial inhibition of p53-induced apoptosis. These results suggest that epigenetic cancer therapy is possible for some cancers in combination with forced p53 activation.

journal_name

Cancer Invest

journal_title

Cancer investigation

authors

Yagi S,Oda-Sato E,Uehara I,Asano Y,Nakajima W,Takeshita T,Tanaka N

doi

10.1080/07357900701840212

subject

Has Abstract

pub_date

2008-08-01 00:00:00

pages

680-8

issue

7

eissn

0735-7907

issn

1532-4192

pii

792909824

journal_volume

26

pub_type

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