کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10129241 1645209 2018 39 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
USP10 suppresses tumor progression by inhibiting mTOR activation in hepatocellular carcinoma
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
USP10 suppresses tumor progression by inhibiting mTOR activation in hepatocellular carcinoma
چکیده انگلیسی
Dysregulation of deubiquitination pathway is associated with poor prognosis in cancers such as hepatocellular carcinoma (HCC). The mammalian target of rapamycin, mTOR, has become an attractive cancer therapeutic target in HCC. However, whether and how aberrant expression of deubiquitination pathway regulates mTOR pathway has remained elusive. Here we report that ubiquitin-specific protease 10 (USP10) functions as a tumor suppressor which inhibits mTOR pathway by stabilizing PTEN and AMPKα in HCC cells. Mechanistically, USP10 interacts and stabilizes PTEN and AMPKα by inhibiting their polyubiquitylation. This stabilization in turn inhibits AKT phosphorylation and mTOR Complex1 (mTORC1) activation. In human liver cancer, USP10 expression is downregulated in HCC tumor tissues across three independent HCC cohorts, and lower-expression of USP10 will generate poor prognosis outcome. Collectively, our results uncover an undescribed mechanism where USP10, as a tumor suppressor, negatively regulates mTORC1 activation and AKT phosphorylation by stabilizing AMPKα and PTEN in HCC cells. This study sheds light on the theoretical basis of mTOR signaling pathway-oriented targeting treatment in clinic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cancer Letters - Volume 436, 1 November 2018, Pages 139-148
نویسندگان
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