Aspirin inhibits the proliferation of hepatoma cells through controlling GLUT 1-mediated glucose metabolism  

作　　者：Yun-xia Liu Jin-yan Feng Ming-ming Sun Bo-wen Liu Guang Yang Ya-nan Bu Man Zhao Tian-jiao Wang Wei-ying Zhang Hong-feng Yuan Xiao-dong Zhang 

机构地区：[1]Department of Cancer Research,College of Life Sciences,Nankai University,Tianjin 300071,China [2]Department of Biochemistry,College of Life Sciences,Nankai University, Tianjin 300071,China

出　　处：《Acta Pharmacologica Sinica》2019年第1期122-132,共11页中国药理学报（英文版）

基　　金：National Basic Research Program of China (973 Program,No.2015CB553703);National Natural Science Foundation of China (No. 31670769,No.31470756).

摘　　要：Aspirin can efficiently inhibit liver cancer growth,but the mechanism is poorly,understood.In this study,we-report that aspirin modulates glucose uptake through downregulating glucose transporter 1 (GLUT1),leading to the inhibition of hepatoma cell proliferation.Our data showed that aspirin significantly decreased the levels of reactive oxygen species (ROS)and glucose consumption in hepatoma cells.Interestingly,we identified that GLUT1 and HIF1α could be decreased by aspirin.Mechanically,we demonstrated that the -1008/-780 region was the regulatory element of transcriptional factor NF-κB in GLUT1 promoter by luciferase report gene assays.PDTC,an inhibitor of NF-KB,could suppress the expression of GLUT1 in HepG2 and H7402 cells,: followed by affecting the levels of ROS and glucose consumption.CoCl2-activated HIF1α expression could slightly rescue the GLUT1 expression inhibited by aspirin or PDTC,suggesting that aspirin depressed GLUT1 through targeting NF-κB or NF-κB/HIFla signaling.Moreover,we found that GLUT1 was highly expressed in clinical HCC tissues relating to their paired adjacent normal tissues.Importantly,we observed that high level of GLUT1 was significantly correlated with the poor relapse-free survival of HCC patients by analysis of public data.Functionally,overexpression of GLUT1 blocked the PDTC-induced or aspirin-induced inhibition of glucose metabolism in HepG2 cells.Conversely,aspirin failed to work when GLUT1 was stably knocked down in the cells. Administration of aspirin could depress the growth of hepatoma cells through controlling GLUT1 in vitro and in vivo.Thus,our finding provides new insights into the mechanism by which aspirin depresses liver cancer.

关 键 词：ASPIRIN GLUCOSE UPTAKE GLUT1 NF-κB liver cancer 

分 类 号：R[医药卫生]