BIM is the primary mediator of MYC-induced apoptosis in multiple solid tissues.
BIM is the primary mediator of MYC-induced apoptosis in multiple solid tissues.
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DOI:
10.1016/j.celrep.2014.07.057
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发表时间:
2014-09-11
期刊:
影响因子:
8.8
通讯作者:
Murphy DJ
中科院分区:
文献类型:
--
作者:
Muthalagu N;Junttila MR;Wiese KE;Wolf E;Morton J;Bauer B;Evan GI;Eilers M;Murphy DJ
MYC is one of the most frequently overexpressed oncogenes in human cancer and even modestly deregulated MYC can initiate ectopic proliferation in many post-mitotic cell types in vivo. Sensitization of cells to apoptosis limits MYC’s oncogenic potential. However, the mechanism through which MYC induces apoptosis is controversial: Some studies implicate p19ARF-mediated stabilization of p53, followed by induction of pro-apoptotic BH3 proteins NOXA and PUMA, while others argue for direct regulation of BH3 proteins, especially BIM. Here, we use a single experimental system to systematically evaluate the roles of p19ARF and BIM during MYC-induced apoptosis, in vitro, in vivo, and in combination with a widely used chemotherapeutic, Doxorubicin. We find a common specific requirement for BIM during MYC-induced apoptosis in multiple settings, which does not extend to the p53-responsive BH3 family member PUMA, and find no evidence of a role for p19ARF during MYC-induced apoptosis in the tissues examined.
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