SHP2 overexpression enhances the invasion and metastasis of ovarian cancer in vitro and in vivo
Authors Hu ZQ, Li J, Gao Q, Wei S, Yang B
Received 4 April 2017
Accepted for publication 30 May 2017
Published 2 August 2017 Volume 2017:10 Pages 3881—3891
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Ashok Kumar Pandurangan
Peer reviewer comments 2
Editor who approved publication: Dr Faris Farassati
ZhongQian Hu,1,* Jia Li,2,* Qi Gao,2,* Shuping Wei,1 Bin Yang1
1Department of Ultrasound, Jinling Clinical Medical College of Nanjing Medical University, Nanjing, China; 2Department of Ultrasound, Zhongda Hospital, Southeast University, Nanjing, China
*These authors contributed equally to this work
Purpose: SHP2 has roles in a variety of signal transduction pathways and in many important cellular processes, including proliferation, differentiation, movement regulation, and apoptosis. In addition, SHP2 expression is closely associated with multiple types of malignancies. In this study, we examined the role of SHP2 in epithelial ovarian cancer.
Patients and methods: SHP2 expression in cancer and normal ovarian tissue specimens was evaluated by immunohistochemical staining and Western blot analyses. The correlation between the SHP2 expression level and clinicopathological features was analyzed. The role of SHP2 in epithelial ovarian cancer was evaluated by assessing SHP2 expression patterns in vitro and in vivo, and activation of the PI3K/AKT pathway was examined.
Results: SHP2 is expressed at higher levels in ovarian cancer tissues than in normal ovarian tissues and in an ovarian cancer cell line than in a normal ovarian cell line. On the basis of these findings, SHP2 is overexpressed in ovarian cancer both in vitro and in vivo. In addition, SHP2 overexpression is associated with tumor stage and differentiation, enhanced cell proliferation and invasion, and tumorigenesis and metastasis.
Conclusion: SHP2 overexpression enhances ovarian tumor proliferation and invasion by activating the PI3K-AKT axis, indicating that SHP2 potentially plays a direct role in the pathogenesis of ovarian epithelial cell cancer. These novel findings provide key insights that are applicable to basic cancer research and to the prevention and treatment of cancer.
Keywords: ovarian tumor, SHP2, overexpression, proliferation, invasion, metastasis