文献类型： 外文期刊

作者： Jiao, Peng ¹ ; Zhou, Yun-Sheng ² ; Yang, Juan-Xia ³ ; Zhao, Ya-Li ⁴ ; Liu, Qiang-Qiang ⁴ ; Yuan, Chuang ⁴ ; Wang, Feng ¹ ;

作者机构： 1.Taishan Med Univ, Key Lab Atherosclerosis, Shandong Univ, Tai An 271016, Shandong, Peoples R China

2.Cent Hosp Taian, Dept Radiat Oncol, Tai An 271000, Shandong, Peoples R China

3.Shandong Inst Pomol, Tai An 271000, Shandong, Peoples R China

4.Taishan Med Univ, Sch Biol Sci, Tai An 271016, Shandong, Peoples R China

5.Taishan Med Univ, Key Lab Brain Microcirculat, Shandong Univ, Tai An 271016, Shandong, Peoples R China

关键词： MK-2206;HepG2 cell;PI3K/AKT;Cell apoptosis;TRAIL

期刊名称：MOLECULAR AND CELLULAR BIOCHEMISTRY （ 影响因子：3.396； 五年影响因子：3.282 ）

ISSN： 0300-8177

年卷期： 2013 年 382 卷 1-2 期

页码：

收录情况： SCI

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 (TRAIL). 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.