Destabilization of TIP60 by human papillomavirus E6 results in attenuation of TIP60-dependent transcriptional regulation and apoptotic pathway.
Destabilization of TIP60 by human papillomavirus E6 results in attenuation of TIP60-dependent transcriptional regulation and apoptotic pathway.
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DOI:
10.1016/j.molcel.2010.05.020
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发表时间:
2010-06-11
期刊:
影响因子:
16
通讯作者:
Dutta A
中科院分区:
文献类型:
--
作者:
Jha S;Vande Pol S;Banerjee NS;Dutta AB;Chow LT;Dutta A
The TIP60 tumor suppressor is a histone acetyltransferase involved in transcriptional regulation, checkpoint activation, and p53-directed pro-apoptotic pathways. We report that Human Papilloma Virus (HPV) E6 destabilizes TIP60 both in vivo and in vitro. TIP60 binds to the HPV major early promoter and acetylates histone H4 to recruit Brd4, a cellular repressor of HPV E6 expression. Both low- and high-risk HPV E6 destabilize TIP60, thereby derepressing their own promoter. Destabilization of TIP60 by HPV E6 also relieves cellular promoters from TIP60-initiated repression and abrogates p53-dependent activation of apoptotic pathway. Degradation of TIP60 is therefore a new pathway by which low- and high-risk HPV promote cell proliferation, and cell survival.
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