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Mol. Cells 2012; 33(6): 545-551

Published online June 30, 2012

https://doi.org/10.1007/s10059-012-2267-4

© The Korean Society for Molecular and Cellular Biology

MicroRNA-590-5p Regulates Proliferation and Invasion in Human Hepatocellular Carcinoma Cells by Targeting TGF-β RII

Xiaofeng Jiang, Guangyang Xiang, Yezeng Wang, Lei Zhang1, Xuewei Yang, Liangqi Cao, Heping Peng, Ping Xue, and De Chen*

Department of Hepatobiliary and Pancreatic Surgery, the Second Affiliated Hospital of Guangzhou Medical College, China, 1Medical School, Tongji University, China

Correspondence to : *Correspondence: drdechen@yahoo.cn

Received: November 23, 2011; Revised: March 24, 2012; Accepted: April 3, 2012

Abstract

MicroRNAs (miRNAs) are regulatory small non-coding RNAs that can regulate gene expression by binding to gene elements, such as the gene promotor 5?UTR, mainly in the 3?UTR of mRNA. One miRNA targets many mRNAs, which can be regulated by many miRNAs, leading to a complex metabolic network. In our study, we found that the expression level of miR-590-5p is higher in the human hepatocellular carcinoma cell line HepG2 than in the normal hepatocellular cell line L02. Downregulation of miR-590-5p inhibited proliferation and invasion of hepatocellular carcinoma cells (HCCs). We also showed that expression of TGF-beta RII, which has been regarded as a regulator of tumor proliferation, invasion, and migration in hepatocellular carcinoma, is regulated by miRNA-590-5p. In addition, miR-590-5p downregulated the expression of TGF- beta RII by targeting the 3?UTR of mRNA. We also found that downregulation of miR-590-5p was associated with an elevation of TGF-beta RII and inhibition of proliferation and invasion in HepG2 cells. Furthermore, overex-pression of miR-590-5p was associated with upregulation of TGF-beta RII and could promote proliferation and invasion in L02 cells. In conclusion, we determined that TGF-beta RII is a novel target of miRNA-590-5p. Thus, the role of TGF-beta RII in regulating proliferation and invasion of human HCCs is controlled by miR-590-5p. In other words, miR-590-5p promotes proliferation and invasion in human HCCs by directly targeting TGF-beta RII.

Keywords HepG2, invasion, L02, miR-590-5p, proliferation, TGF-beta RII

Article

Research Article

Mol. Cells 2012; 33(6): 545-551

Published online June 30, 2012 https://doi.org/10.1007/s10059-012-2267-4

Copyright © The Korean Society for Molecular and Cellular Biology.

MicroRNA-590-5p Regulates Proliferation and Invasion in Human Hepatocellular Carcinoma Cells by Targeting TGF-β RII

Xiaofeng Jiang, Guangyang Xiang, Yezeng Wang, Lei Zhang1, Xuewei Yang, Liangqi Cao, Heping Peng, Ping Xue, and De Chen*

Department of Hepatobiliary and Pancreatic Surgery, the Second Affiliated Hospital of Guangzhou Medical College, China, 1Medical School, Tongji University, China

Correspondence to:*Correspondence: drdechen@yahoo.cn

Received: November 23, 2011; Revised: March 24, 2012; Accepted: April 3, 2012

Abstract

MicroRNAs (miRNAs) are regulatory small non-coding RNAs that can regulate gene expression by binding to gene elements, such as the gene promotor 5?UTR, mainly in the 3?UTR of mRNA. One miRNA targets many mRNAs, which can be regulated by many miRNAs, leading to a complex metabolic network. In our study, we found that the expression level of miR-590-5p is higher in the human hepatocellular carcinoma cell line HepG2 than in the normal hepatocellular cell line L02. Downregulation of miR-590-5p inhibited proliferation and invasion of hepatocellular carcinoma cells (HCCs). We also showed that expression of TGF-beta RII, which has been regarded as a regulator of tumor proliferation, invasion, and migration in hepatocellular carcinoma, is regulated by miRNA-590-5p. In addition, miR-590-5p downregulated the expression of TGF- beta RII by targeting the 3?UTR of mRNA. We also found that downregulation of miR-590-5p was associated with an elevation of TGF-beta RII and inhibition of proliferation and invasion in HepG2 cells. Furthermore, overex-pression of miR-590-5p was associated with upregulation of TGF-beta RII and could promote proliferation and invasion in L02 cells. In conclusion, we determined that TGF-beta RII is a novel target of miRNA-590-5p. Thus, the role of TGF-beta RII in regulating proliferation and invasion of human HCCs is controlled by miR-590-5p. In other words, miR-590-5p promotes proliferation and invasion in human HCCs by directly targeting TGF-beta RII.

Keywords: HepG2, invasion, L02, miR-590-5p, proliferation, TGF-beta RII

Mol. Cells
Aug 31, 2022 Vol.45 No.8, pp. 513~602
COVER PICTURE
Cryo-EM structure of human porphyrin transporter ABCB6 (main figure) shows that binding of hemin (inset, magenta) in concert with two glutathione molecules (cyan) primes ABCB6 for high ATP turnover (Kim et al., pp. 575-587).

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