Induction of apoptosis by directing oncogenic Bcr-Abl into the nucleus.
Induction of apoptosis by directing oncogenic Bcr-Abl into the nucleus.
复制标题
通过引导致癌 Bcr-Abl 进入细胞核诱导细胞凋亡
DOI:
10.18632/oncotarget.1339
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发表时间:
2013-12
期刊:
影响因子:
--
通讯作者:
Feng WL
中科院分区:
文献类型:
--
作者:
Huang ZL;Gao M;Li QY;Tao K;Xiao Q;Cao WX;Feng WL
The chimeric Bcr-Abl oncoprotein, which causes chronic myeloid leukemia, mainly localizes in the cytoplasm, and loses its ability to transform cells after moving into the nucleus. Here we report a new strategy to convert Bcr-Abl to be an apoptotic inducer by altering its subcellular localization. We show that a rapalog nuclear transport system (RNTS) containing six nuclear localization signals directs Bcr-Abl into the nucleus and that nuclear entrapped Bcr-Abl induces apoptosis and inhibits proliferation of CML cells by activating p73 and shutting down cytoplasmic oncogenic signals mediated by Bcr-Abl. Coupling cytoplasmic depletion with nuclear entrapment of Bcr-Abl synergistically enhances the inhibitory effect of nuclear Bcr-Abl on its oncogenicity in mice. These results provide evidence that direction of cytoplasmic Bcr-Abl to the nucleus offers an alternative CML therapy.
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