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Abnormal expression of calcyphosine is associated with poor prognosis and cell biology function in colorectal cancer

Authors Shao W, Wang Q, Wang F, Jiang Y, Xu M, Xu J

Received 11 July 2015

Accepted for publication 9 December 2015

Published 25 January 2016 Volume 2016:9 Pages 477—487

DOI https://doi.org/10.2147/OTT.S92226

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Ram Prasad

Peer reviewer comments 3

Editor who approved publication: Professor Daniele Santini


Weiwei Shao,* Quhui Wang,* Feiran Wang, Yasu Jiang, Meirong Xu, Junfei Xu

Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, People’s Republic of China

*These authors contributed equally to this work

Abstract: The aim of this study was to investigate the calcyphosine (CAPS) expression in human colorectal cancer (CRC) and to explore its clinical and prognostic significances. CAPS expression was measured by Western blot, real-time polymerase chain reaction analysis, and immunohistochemistry. The relationships between the CAPS expression levels and the clinicopathological factors were investigated. The Kaplan–Meier method and log-rank test were used to investigate the overall survival of the patients. Moreover, the effects of CAPS on biological roles of CRC cells were also evaluated by MTT assay, colony formation assay, and transwell assay. CAPS was significantly overexpressed in cancerous tissue and CRC cell lines compared with adjacent nontumor tissue and a normal human intestinal epithelial cell line. Overexpression of CAPS was significantly associated with histological grade (P=0.004), invasive depth (P<0.001), lymph node metastasis (P=0.003), tumor node metastasis stage (P=0.017), and distant metastasis (P=0.042). Furthermore, silencing of CAPS expression in CRC cells inhibited their proliferation, colony formation, migration, and invasion. Kaplan–Meier survival analysis showed that high CAPS expression might demonstrate poor prognosis in CRC patients. Cox regression analysis revealed that CAPS expression was an independent prognostic factor of CRC. Our data suggested that the upregulation of CAPS might play a role in the carcinogenesis and progression of CRC. CAPS could be used as a potential diagnostic factor and be an independent good prognostic indicator for CRC patients.

Keywords: calcyphosine, colorectal cancer, prognosis

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