机构：[a]School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China[b]Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China[c]General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, China
Colorectal cancer (CRC) is one of the leading causes of cancer related deaths worldwide. RNA helicases have been widely implicated in various types of cancer development. DDX46 belongs to the DEAD box family of RNA helicases, which are involved in the regulation of secondary RNA structures. The expression pattern of DDX46 in cancer tissues and the role of DDX46 in CRC progression have not been determined. In this study, we detected DDX46 protein expression in human CRC and adjacent tissues using immunohistochemistry. Our results showed that 87.04% of the columnar adenocarcinoma cases displayed high levels of focal nuclear DDX46 staining, and DDX46 protein expression was strongly increased in CRC tissues compared to adjacent tissues. Next, DDX46 RNAi lentivirus (DDX46-RNAi-LV) was used to silence the expression of DDX46 in the human colon carcinoma cells. Cells treated with the DDX46-RNAi-LV exhibited markedly reduced cell proliferation assessed by the MTT assay and visualized colony formation. Moreover, DDX46 silencing resulted in apoptotic induction via increased expression of cleaved caspase-3 and PARP. These results indicate that DDX46 is critical for CRC cell proliferation and is a potential therapeutic target for CRC treatment. (C) 2015 Elsevier B.V. All rights reserved.
基金：
This work was supported by the National Natural Science Foundation
of China (31300694, 81172348, 81301933 and 81172597), Jiangsu
Provincial Natural Science Foundation (BK20130336), the Priority Academic
Program Development of Jiangsu Higher Education Institutions
(PAPD) and Jiangsu Provincial Key Laboratory of Radiation Medicine
and Protection.
第一作者机构：[a]School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China[b]Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China[*1]199 Ren'ai Road, District of Industrial Park, Suzhou, Jiangsu,China
通讯作者：
通讯机构：[*1]199 Ren'ai Road, District of Industrial Park, Suzhou, Jiangsu,China
推荐引用方式(GB/T 7714)：
Ming Li,YanchaoMa,Pei Huang,et al.Lentiviral DDX46 knockdown inhibits growth and induces apoptosis in human colorectal cancer cells[J].GENE.2015,560(2):237-44.doi:10.1016/j.gene.2015.02.020.
APA：
Ming Li,YanchaoMa,Pei Huang,Aonan Du,Xiaodong Yang...&Jianping Cao.(2015).Lentiviral DDX46 knockdown inhibits growth and induces apoptosis in human colorectal cancer cells.GENE,560,(2)
MLA：
Ming Li,et al."Lentiviral DDX46 knockdown inhibits growth and induces apoptosis in human colorectal cancer cells".GENE 560..2(2015):237-44
