Basic Study
Copyright ©The Author(s) 2017. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastrointest Oncol. Apr 15, 2017; 9(4): 153-159
Published online Apr 15, 2017. doi: 10.4251/wjgo.v9.i4.153
Effect of Clostridium perfringens enterotoxin on gastric cancer cells SGC7901 which highly expressed claudin-4 protein
Zheng-Yun Liang, Xing Kang, Hong Chen, Meng Wang, Wen-Xian Guan
Zheng-Yun Liang, Department of General Surgery, Qianxinan People’s Hospital, Xingyi 562400, Guizhou Province, China
Xing Kang, Hong Chen, Meng Wang, Wen-Xian Guan, Department of General Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210000, Jiangsu Province, China
Author contributions: Liang ZY and Kang X are equally contributed to this paper; Liang ZY contributed to the in vitro studies and drafted the manuscript; Kang X carried out the animal model studies and drafted the manuscript; Chen H participated the confocal and Western blot studies; Wang M contributed to the study design, coordination, data statistical analysis and made revisions; Guan WX contributed to the conceptions and design; all authors read and approved the final manuscript.
Supported by The National Natural Science Foundation of China, No. 81300268.
Institutional review board statement: This manuscript doesn’t involve any human participants, human data and human tissue in the study.
Institutional animal care and use committee statement: All aspects of the animal study were approved by the Animal Use and Care Committee of Nanjing Drum Tower hospital (Nanjing, China).
Conflict-of-interest statement: To the best of our knowledge, no conflict of interest exists.
Data sharing statement: Technical appendix, statistical code, and dataset available from the corresponding author at wangmeng001@263.net.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Wen-Xian Guan, MD, PhD, Department of General Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing Drum Tower Hospital, Nanjing 210000, Jiangsu Province, China. guan-wx@163.com
Telephone: +86-25-68182097 Fax: +86-25-68182097
Received: July 20, 2016
Peer-review started: July 21, 2016
First decision: September 13, 2016
Revised: December 11, 2016
Accepted: January 16, 2017
Article in press: January 18, 2017
Published online: April 15, 2017
Abstract
AIM

To investigate the effects of Clostridium perfringens enterotoxin (CPE) on gastric cancer cells which highly expressed claudin-4 (CL4) protein.

METHODS

In this study, we detected expression of CL4 protein in different gastric cancer cell lines. Then, we investigated the effects of CPE on SGC7901 cells which highly expressed CL4 protein and the effects of CPE on subcutaneous tumor in nude mice models.

RESULTS

CL4 are highly expressed in SGC7901 cells. CPE expressed significant cytotoxicity in SGC7901 cells. Suppression of CL4 expression significantly decreased CPE-mediated cytotoxicity. CPE also inhibited tumor growth in subcutaneous tumor xenograft models.

CONCLUSION

CPE showed CL4 mediated cytotoxicity on gastric cancer cells SGC7901 and inhibited tumor growth in nude mice models.

Keywords: Gastric cancer, Clostridium perfringens enterotoxin, Claudin-4 protein, Cytotoxicity, Tight junction

Core tip: This study firstly investigated the the effects of Clostridium perfringens enterotoxin (CPE) on gastric cancer cells SGC7901, and indicated CPE’s potential effect in gastric cancer therapy.