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Suppression of EIF4G2 by miR-379 potentiates the cisplatin chemosensitivity in non-small cell lung cancer cells.

Research paper by Guang-Jun GJ Hao, Hai-Jun HJ Hao, Yan-Hui YH Ding, Hui H Wen, Xiao-Feng XF Li, Qian-Ru QR Wang, Bing-Bing BB Zhang

Indexed on: 25 Jan '17Published on: 25 Jan '17Published in: FEBS Letters



Abstract

Although microRNAs and EIF4G2 are both known to play pivotal roles in cancer progression, it remains unknown whether these pathways regulate chemosensitivity in a coordinated manner. Here, we show that miR-379 expression is significantly downregulated in chemoresistant non-small cell lung cancer (NSCLC) tissues and cells. Manipulation of miR-379 levels could alter the in vitro and in vivo cisplatin (CDDP) resistance in lung cancer (LCa) cells. Mechanistically, miR-379 potentiated LCa chemosensitivity via modulation of CDDP-induced apoptosis by directly targeting the EIF4G2 3'UTR. Additionally, we observed an inverse correlation between miR-379 and EIF4G2 expression in LCa tissues from patients with CDDP-based chemotherapy. Together, our findings shed new light on the potential involvement of miR-379/EIF4G2 cascade in the pathogenesis of CDDP-resistance in LCa. This article is protected by copyright. All rights reserved.