کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5828353 1558963 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Galangin inhibits proliferation of HepG2 cells by activating AMPK via increasing the AMP/TAN ratio in a LKB1-independent manner
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
پیش نمایش صفحه اول مقاله
Galangin inhibits proliferation of HepG2 cells by activating AMPK via increasing the AMP/TAN ratio in a LKB1-independent manner
چکیده انگلیسی
Galangin, a flavonol derived from Alpinia officinarum Hance and used as food additives in southern China, induces apoptosis and autophagy to suppress the proliferation of HepG2 cells. In this study, we demonstrated that galangin induced autophagy by increasing the ratio of AMP/TAN in HepG2 cells. It stimulated the phosphorylation of adenosine monophosphate-activated protein kinase (AMPK) and LKB1, but inhibited the phosphorylation of AKT and mTOR. Inhibition of AMPK activation suppressed the dephosphorylation of mTOR to block galangin-induced autophagy. AMPK activation by galangin appeared to be independent of the LKB1 signaling pathway because the down-regulation of LKB1 by its siRNA failed to affect galangin-induced autophagy. Collectively, the findings demonstrated a novel mechanism of how galangin induces autophagy via activating AMPK in a LKB1- independent manner. The induction of autophagy can thus reflect the anti-proliferation effect of galangin in HCC cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmacology - Volume 718, Issues 1–3, 15 October 2013, Pages 235-244
نویسندگان
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