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作者

Jiao, P. Zhou, Y.-S. Yang, J.-X. Zhao, Y.-L. Liu, Q.-Q. Yuan, C. Wang, F.-Z.

作者单位

School of Biological Science, Taishan Medical University, Chang Cheng Road, Taian 271016, China Key Laboratory of Brain Microcirculation, Universities of Shandong, Taishan Medical University, Chang Cheng Road, Taian 271016, China Department of Radiation Oncology, Central Hospital of Taian, Taian 271000, China a Key Laboratory of Atherosclerosis, Universities of Shandong, Taishan Medical University, Taian 271016, China Shandong Institute of Pomology, Taian 271000, China

刊名

Molecular and Cellular Biochemistry

年份

2013

卷号

Vol.382 No.1-2

页码

217-224

ISSN

0300-8177;1573-4919

关键词

Cell apoptosis HepG2 cell MK-2206 PI3K/AKT TRAIL

摘要

It has become evident that AKT inhibitors have great potential in cancer treatment. In this study, we investigate the anticancer activity of MK-2206, a novel AKT inhibitor, on HepG2 hepatocellular carcinoma cell, and to show whether MK-2206 enhances the apoptosis-inducing potential of tumor necrosis factor-related apoptosis-inducing ligand . The cell growth inhibition was evaluated by MTT assay and colony formation assay. Cell cycle distribution was assessed by propidium iodide flow cytometry. A...更多

It has become evident that AKT inhibitors have great potential in cancer treatment. In this study, we investigate the anticancer activity of MK-2206, a novel AKT inhibitor, on HepG2 hepatocellular carcinoma cell, and to show whether MK-2206 enhances the apoptosis-inducing potential of tumor necrosis factor-related apoptosis-inducing ligand . The cell growth inhibition was evaluated by MTT assay and colony formation assay. Cell cycle distribution was assessed by propidium iodide flow cytometry. Apoptosis was determined by AnnexinV-FITC/PI double staining assay and caspase-9, casapse-7, caspase-3, and PARP cleavage. The results of present study showed that MK-2206-induced G1-phase arrest was associated with a marked decrease in the protein expression of cyclin D1 with concomitant induction of p21 and p27. MK-2206-induced apoptosis was characterized by cleavage of a pro-caspase in a concentration-dependent manner. Moreover, the MAP family kinases p38 kinase and JNK were activated by exposure to MK-2206. SB203580, an p38-specific inhibitor, partially blocked MK-2206-induced death of HepG2 cells and caspase activation. A combination of MK-2206 with TRAIL significantly inhibited growth of TRAIL resistant HepG2 cells. Taken together, our findings provide a new insight to better understand anticancer mechanisms of MK-2206, at least in HepG2 cell. Using of MK-2206 as a potent sensitizer to TRAIL-induced apoptotic cell death offers a promising means of enhancing the efficacy of TRAIL-based HCC treatments.收起

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