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Int. J. Mol. Sci. 2013, 14(8), 16226-16239; doi:10.3390/ijms140816226
Article

Involvement of miR-20a in Promoting Gastric Cancer Progression by Targeting Early Growth Response 2 (EGR2)

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Department of General Surgery, Xinqiao Hospital, Third Military Medical University, Xinqiao Road, Chongqing 400037, China
* Authors to whom correspondence should be addressed.
Received: 5 June 2013 / Revised: 18 July 2013 / Accepted: 18 July 2013 / Published: 6 August 2013
(This article belongs to the Special Issue Regulation by non-coding RNAs 2013)
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Abstract

Gastric cancer (GC) is one of the most common cancers, with high incidences in East Asia. microRNAs (miRNAs) play essential roles in the carcinogenesis of GC. miR-20a was elevated in GC, while the potential function of miR-20a was poorly understood. miR-20a expression was examined in GC tissues and cell lines. The effects of miR-20a on the growth, migration, invasion, and chemoresistance of GC cells were examined. Luciferase reporter assay and Western blot were used to screen the target of miR-20a. miR-20a was increased in GC tissues and cell lines. miR-20a promoted the growth, migration and invasion of GC cells, enhanced the chemoresistance of GC cells to cisplatin and docetaxel. Luciferase activity and Western blot confirmed that miR-20a negatively regulated EGR2 expression. Overexpression of EGR2 significantly attenuated the oncogenic effect of miR-20a. miR-20a was involved in the carcinogenesis of GC through modulation of the EGR2 signaling pathway.
Keywords: gastric cancer; miR-20a; early growth response 2; carcinogenesis; chemoresistance gastric cancer; miR-20a; early growth response 2; carcinogenesis; chemoresistance
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Li, X.; Zhang, Z.; Yu, M.; Li, L.; Du, G.; Xiao, W.; Yang, H. Involvement of miR-20a in Promoting Gastric Cancer Progression by Targeting Early Growth Response 2 (EGR2). Int. J. Mol. Sci. 2013, 14, 16226-16239.

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