miR-340 Reverses Cisplatin Resistance of Hepatocellular Carcinoma Cell Lines by Targeting Nrf2-dependent Antioxidant Pathway

Shi, Liang; Chen, Zhan-Guo; Wu, Li-li; Zheng, Jian-Jian; Yang, Jian-Rong; Chen, Xiao-Fei; Chen, Zeng-Qiang; Liu, Cun-Li; Chi, Sheng-Ying; Zheng, Jia-Ying; Huang, Hai-Xia; Lin, Xiang-Yang; Zheng, Fang

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자료유형: 학술저널

저자정보: Shi, Liang (Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University) Chen, Zhan-Guo (Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University) Wu, Li-li (Department of Clinical Laboratory, The Dingli Clinical College of Wenzhou Medical University) Zheng, Jian-Jian (Wenzhou Key Laboratory of Surgery, The First Affiliated Hospital of Wenzhou Medical University) Yang, Jian-Rong (Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University) Chen, Xiao-Fei (Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University) Chen, Zeng-Qiang (Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University) Liu, Cun-Li (Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University) Chi, Sheng-Ying (Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University) Zheng, Jia-Ying (Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University) Huang, Hai-Xia (Department of Laboratory Medicine, The First Affiliated Hospit) Lin, Xiang-Yang Zheng, Fang

저널정보: 아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제15권 제23호

발행연도: 2014.1

수록면: 10,439 - 10,444 (6page)

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Many chemotherapeutic agents have been successfully used to treat hepatocellular carcinoma (HCC); however, the development of chemoresistance in liver cancer cells usually results in a relapse and worsening of prognosis. It has been demonstrated that DNA methylation and histone modification play crucial roles in chemotherapy resistance. Currently, extensive research has shown that there is another potential mechanism of gene expression control, which is mediated through the function of short noncoding RNAs, especially for microRNAs (miRNAs), but little is known about their roles in cancer cell drug resistance. In present study, by taking advantage of miRNA effects on the resistance of human hepatocellular carcinoma cells line to cisplatin, it has been demonstrated that miR-340 were significantly downregulated whereas Nrf2 was upregulated in HepG2/CDDP (cisplatin) cells, compared with parental HepG2 cells. Bioinformatics analysis and luciferase assays of Nrf2-3'-untranslated region-based reporter constructor indicated that Nrf2 was the direct target gene of miR-340, miR-340 mimics suppressing Nrf2-dependent antioxidant pathway and enhancing the sensitivity of HepG2/CDDP cells to cisplatin. Interestingly, transfection with miR-340 mimics combined with miR-340 inhibitors reactivated the Nrf2 related pathway and restored the resistance of HepG2/CDDP cells to CDDP. Collectively, the results first suggested that lower expression of miR-340 is involved in the development of CDDP resistance in hepatocellular carcinoma cell line, at least partly due to regulating Nrf2-dependent antioxidant pathway.

#Hepatocellular carcinoma cell lines #miR-340 #Nrf2 #cisplatin #chemoresistance

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Shi, Liang

소속기관 Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University