PT  - JOURNAL ARTICLE
AU  - Qiang Kang
AU  - Jia-Bin Cai
AU  - Rui-Zhao Dong
AU  - Li-Xin Liu
AU  - Chi Zhang
AU  - Peng-Fei Zhang
AU  - Hao Zou
AU  - Nan Xie
AU  - Lu Zhang
AU  - Xin-Yu Zhang
AU  - Zheng-Ji Song
AU  - Zhao-Ru Dong
AU  - Mei-Yu Hu
AU  - Xiao-Yong Huang
AU  - Xiao-Wen Zhang
AU  - Ai-Wu Ke
AU  - Guo-Ming Shi
TI  - Mortalin promotes cell proliferation and epithelial mesenchymal transition of intrahepatic cholangiocarcinoma cells in vitro
AID  - 10.1136/jclinpath-2016-204251
DP  - 2017 Aug 01
TA  - Journal of Clinical Pathology
PG  - 677--683
VI  - 70
IP  - 8
4099  - http://jcp.bmj.com/content/70/8/677.short
4100  - http://jcp.bmj.com/content/70/8/677.full
SO  - J Clin Pathol2017 Aug 01; 70
AB  - Aims The prognosis of patients with intrahepatic cholangiocarcinoma (ICC) remains poor in terms of overall survival (OS) and recurrence rate. Mortalin, a stress chaperone, has been reported to be involved in carcinogenesis and metastasis. However, its role in ICC has not been defined.Methods Mortalin expression in tumour samples from patients with ICC was examined by Western blot and immunohistochemistry, and correlation between its expression and clinicopathological features was assessed. In addition, invasion, migration proliferation and apoptosis, and the expression of epithelial-mesenchymal transition (EMT)-related markers in ICC cells were assessed after mortalin depletion. Finally, the prognostic significance of mortalin in patients with ICC was further evaluated by Kaplan–Meier and Cox regression analysis.Results We provide evidence that expression of mortalin in human ICC tissues is higher than that in matched peritumoural tissues. The interference of mortalin expression inhibited the proliferation and invasion of ICC cells in vitro. Mechanistically, inhibition of mortalin expression in ICC cells upregulated E-cadherin expression and decreased vimentin and snail expression. Clinically, a high level of mortalin in ICC samples was associated with loss of E-cadherin, and increased expression of vimentin and snail. Patients with ICC and high mortalin expression had a shorter OS and a higher recurrence rate. Multivariate analysis revealed that mortalin overexpression was an independent prognostic indicator for patients with ICC.Conclusions Mortalin may promote cell proliferation and invasion via induction of EMT of ICC cells. A high level of mortalin may be used as a prognostic biomarker and therapeutic target for patients with ICC.