Loss of abhd5 promotes colorectal tumor development and progression by inducing aerobic glycolysis and epithelial-mesenchymal transition.

Loss of abhd5 promotes colorectal tumor development and progression by inducing aerobic glycolysis and epithelial-mesenchymal transition.
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abhd5 的缺失通过诱导有氧糖酵解和上皮间质转化来促进结直肠肿瘤的发生和进展。

DOI:
10.1016/j.celrep.2014.11.016
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发表时间:
2014-12-11
期刊:
影响因子:
8.8
通讯作者:
Yu L
Yu L
中科院分区:
生物学1区
文献类型:
--
作者:
Ou J;Miao H;Ma Y;Guo F;Deng J;Wei X;Zhou J;Xie G;Shi H;Xue B;Liang H;Yu L

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癌细胞如何将代谢转变为有氧糖酵解在很大程度上是未知的。在这里,我们表明,缺乏α/β-水解酶结构域-5(Abhd 5),细胞内脂肪分解激活剂,也被称为比较基因识别-58(CGI-58),促进这种代谢转变,并增强结直肠癌(CRC)的恶性肿瘤。正常成纤维细胞中Abhd 5的沉默诱导恶性转化。在ApcMin/+小鼠中Abhd 5的肠特异性敲除强烈增加腺瘤性息肉的肿瘤发生和恶性转化。在结肠癌细胞中,Abhd 5缺陷通过抑制AMPKα-p53途径诱导上皮-间充质转化,这归因于有氧糖酵解增加。在人CRC中,Abhd 5表达福尔斯显著下降并且与恶性特征负相关。我们的研究首次将Abhd 5与CRC发病机制联系起来。这表明癌细胞可能通过抑制Abhd 5介导的细胞内脂解来发展有氧糖酵解。
How cancer cells shift metabolism to aerobic glycolysis is largely unknown. Here we show that deficiency of α/β-hydrolase domain-containing-5 (Abhd5), an intracellular lipolytic activator that is also known as comparative gene identification-58 (CGI-58), promotes this metabolic shift and enhances malignancies of colorectal carcinomas (CRCs). Silencing of Abhd5 in normal fibroblasts induces malignant transformation. Intestine-specific knockout of Abhd5 in ApcMin/+ mice robustly increases tumorigenesis and malignant transformation of adenomatous polyps. In colon cancer cells, Abhd5 deficiency induces epithelial-mesenchymal transition by suppressing the AMPKα-p53 pathway, which is attributable to increased aerobic glycolysis. In human CRCs, Abhd5 expression falls substantially and correlates negatively with malignant features. Our study is the first to link Abhd5 to CRC pathogenesis. It suggests that cancer cells may develop aerobic glycolysis by suppressing Abhd5-mediated intracellular lipolysis.
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