title: Lentiviral DDX46 knockdown inhibits growth and induces apoptosis in human colorectal cancer cells.
abstract: 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.
authors: School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China. Electronic address: lim1984@suda.edu.cn.
authors: Ming
authors: M
authors: Li
authors: School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China.
authors: Yanchao
authors: Y
authors: Ma
authors: School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China.
authors: Pei
authors: P
authors: Huang
authors: School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China.
authors: Aonan
authors: A
authors: Du
authors: General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, China.
authors: Xiaodong
authors: X
authors: Yang
authors: School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China.
authors: Shuyu
authors: S
authors: Zhang
authors: General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, China.
authors: Chungen
authors: C
authors: Xing
authors: School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China.
authors: Fenju
authors: F
authors: Liu
authors: School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215123, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, Jiangsu 215123, China.
authors: Jianping
authors: J
authors: Cao
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017209:Apoptosis; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D002470:Cell Survival; D015179:Colorectal Neoplasms / Q000378:metabolism*; D053487:DEAD-box RNA Helicases / Q000235:genetics* / Q000378:metabolism; D005260:Female; D059585:G1 Phase Cell Cycle Checkpoints; D055785:Gene Knockdown Techniques; D006801:Humans; D016086:Lentivirus / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D017413:Ribonucleoprotein, U2 Small Nuclear / Q000235:genetics* / Q000378:metabolism; D055815:Young Adult
chemical_list: D017413:Ribonucleoprotein, U2 Small Nuclear; C467585:DDX46 protein, human; D053487:DEAD-box RNA Helicases
keywords: Colorectal cancer; DDX46; Lentivirus; Proliferation; RNAi