BCL-XL binds and antagonizes RASSF6 tumor suppressor to suppress p53 expression

BCL-XL binds and antagonizes RASSF6 tumor suppressor to suppress p53 expression
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BCL-XL 结合并拮抗 RASSF6 肿瘤抑制因子以抑制 p53 表达

DOI:
10.1111/gtc.12541
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发表时间:
2017
期刊:
影响因子:
2.1
通讯作者:
Hata Yutaka
Hata Yutaka
中科院分区:
生物学4区
文献类型:
--
作者:
Xu Xiaoyin;Iwasa Hiroaki;Hossain Shakhawoat;Sarkar Aradhan;Maruyama Junichi;Arimoto-Matsuzaki Kyoko;Hata Yutaka

文献摘要

相似文献

RASSF6是肿瘤抑制因子Ras相关结构域家族的成员,以caspase依赖和非caspase依赖的方式诱导细胞凋亡。RASSF6与MDM2相互作用,稳定p53。BCL-XL是BCL-2家族蛋白中的一个存续成员。BCL-XL直接抑制促凋亡的Bax和BAK。BCL-XL还捕获促凋亡激活剂TbID,一种仅有BH3-的蛋白,并隔离P53。此外,bclxl还通过电压依赖性阴离子通道调节线粒体膜通透性。在这些途径中,bclxl起到了抗细胞凋亡的作用。我们报道了BCL-XL与RASSF6的相互作用。BCL-XL抑制RASSF6与MDM2的相互作用,抑制P53的表达。因此,bclxl拮抗RASSF6介导的细胞凋亡。因此,抑制RASSF6介导的细胞凋亡也是bclxl的生存作用的基础。
RASSF6, a member of the tumor suppressor Ras‐association domain family proteins, induces apoptosis in the caspase‐dependent and caspase‐independent manners. RASSF6 interacts with MDM2 and stabilizes p53. BCL‐XL is a prosurvival member of BCL‐2 family proteins. BCL‐XL directly inhibits proapoptotic BAX and BAK. BCL‐XL also traps tBID, a proapoptotic activator BH3‐only protein, and sequesters p53. In addition, BCL‐XL regulates the mitochondrial membrane permeability via voltage‐dependent anion channel. In these manners, BCL‐XL plays an antiapoptotic role. We report the interaction of BCL‐XL with RASSF6. BCL‐XL inhibits the interaction between RASSF6 and MDM2 and suppresses p53 expression. Consequently, BCL‐XL antagonizes RASSF6‐mediated apoptosis. Thus, the inhibition of RASSF6‐mediated apoptosis also underlies the prosurvival role of BCL‐XL.