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CEP55 promotes the proliferation, migration and invasion of esophageal squamous cell carcinoma via the PI3K/Akt pathway

Authors Jia Y, Xiao Z, Gongsun X, Xin Z, Shang B, Chen G, Wang Z, Jiang W

Received 21 March 2018

Accepted for publication 7 June 2018

Published 20 July 2018 Volume 2018:11 Pages 4221—4232

DOI https://doi.org/10.2147/OTT.S168861

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Prof. Dr. Geoffrey Pietersz


Yang Jia, Zhaohua Xiao, Xin Gongsun, Zhongwei Xin, Bin Shang, Gang Chen, Zhou Wang, Wenpeng Jiang

Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China

Background: Centrosomal protein 55 (CEP55) is an important prognostic biomarker that plays an essential role in the proliferation, migration and invasion of multiple tumors. We aimed to investigate the prognostic value of CEP55 in pN0 esophageal squamous cell carcinoma (ESCC) and explore its biological function in ESCC cells.
Methods: We used immunohistochemistry and Western blot analysis to detect the expression of CEP55 in ESCC. Furthermore, both in vitro and in vivo assays were used to determine the effect of CEP55 on malignant behavior in ESCC cells.
Results: As expected, we found that CEP55 was overexpressed in ESCC. Univariate and multivariate analyses demonstrated that patients with CEP55 overexpression had a poor prognosis. Additionally, the abilities of proliferation, migration and invasion of cells, as well as the epithelial–mesenchymal transition markers, were all altered with the changed CEP55 expression levels in ESCC cells. Further study elucidated that CEP55 facilitated ESCC via the PI3K/Akt pathway. Blockade of this pathway markedly attenuated CEP55-mediated proliferation, migration, invasion and epithelial–mesenchymal transition of ESCC cells.
Conclusion: Oncogenic CEP55 correlates with a poor prognosis by regulating tumor cell proliferation, migration and invasion via the PI3K/Akt pathway. It can serve as a promising prognostic biomarker and therapeutic target of pN0 ESCC after Ivor-Lewis esophagectomy.

Keywords: CEP55, proliferation, migration, invasion, esophageal squamous cell carcinoma, PI3K/Akt pathway

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