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Downregulation of homeobox gene Barx2 increases gastric cancer proliferation and metastasis and predicts poor patient outcomes
Shanghai Jiao Tong University, Peoples R China.
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Medicine and Health Sciences. Shanghai Jiao Tong University, Peoples R China.
Shanghai Jiao Tong University, Peoples R China.
Shanghai Jiao Tong University, Peoples R China.
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2016 (English)In: OncoTarget, ISSN 1949-2553, E-ISSN 1949-2553, Vol. 7, no 37, p. 60593-60608Article in journal (Refereed) Published
Abstract [en]

Barx2 is a Bar family homeodomain transcription factor shown to play a critical role in cell adhesion and cytoskeleton remodeling, key processes in carcinogenesis and metastasis. Using quantitative real-time PCR, Western blotting, and immunohistochemistry, we found that Barx2 is expressed at lower levels in human gastric cancer (GC) tissues than in adjacent normal mucosa. In a multivariate analysis, Barx2 expression emerged as an independent prognostic factor for disease-free and overall survival. Kaplan-Meier survival analysis showed a trend toward even shorter overall survival in the patient group with Barx2-negative tumors, independent of advanced UICC stage and tumor relapse. Using in vitro and in vivo assays, we demonstrated that under normal conditions Barx2 inhibited GC cell proliferation and invasiveness through inhibition of the Wnt/beta-catenin signaling pathway. These findings indicate that reduction or loss of Barx2 dis-inhibits GC cell proliferation and invasion, and that reduction in Barx2 could serve as an independent prognostic biomarker for poor outcome in GC patients.

Place, publisher, year, edition, pages
IMPACT JOURNALS LLC , 2016. Vol. 7, no 37, p. 60593-60608
Keywords [en]
gastric cancer; Barx2; progression; prognosis; Wnt/beta-catenin
National Category
Cancer and Oncology
Identifiers
URN: urn:nbn:se:liu:diva-133027DOI: 10.18632/oncotarget.11260ISI: 000387153900136PubMedID: 27533254OAI: oai:DiVA.org:liu-133027DiVA, id: diva2:1054655
Note

Funding Agencies|National Natural Science Foundation of China [81272750]

Available from: 2016-12-08 Created: 2016-12-07 Last updated: 2018-03-27

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Zhao, SenlinSun, Xiao-FengWen, Yugang
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