MiR-145 suppresses cell proliferation and motility by inhibiting ROCK1 in hepatocellular carcinoma (original) (raw)

Abstract

MicroRNAs (miRNAs) play key roles in cancer development and progression. In the present study, we investigated the role of miR-145 in the progression of hepatocellular carcinoma (HCC). Ten HCC cell lines and samples from 96 patients with HCC were analyzed for the expression of miR-145 by quantitative real-time polymerase chain reaction (qRT-PCR). Overexpression of miR-145 was established by transfecting mimics into HepG2 and QGY-7703 cells. Cell proliferation and cell migration were assessed by cell viability assay and transwell assay. Western blot was to verify ROCK1 as a novel target gene of miR-145. Our results showed that miR-145 was frequently downregulated in HCC tumors and cell lines. Overexpression of miR-145 in HCC cell lines significantly inhibited cell proliferation, migration, and invasion in vitro. ROCK1 was identified as a target of miR-145, and ectopic expression of miR-145 downregulated ROCK1. Together, these findings indicate that miR-145 acts as a tumor suppressor and its downregulation in tumor tissues may contribute to the progression and metastasis of HCC through a mechanism involving ROCK1, suggesting miR-145 as a potential new diagnostic and therapeutic target for the treatment of HCC.

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Acknowledgments

This study was supported by National Natural Science Foundation of China grant (No. 81360274 and No. 31200657).

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Authors and Affiliations

  1. Department of Clinical Laboratory, Kunming General Hospital, Chinese People’s Liberation Army, Daguan Road, Kunming, 650032, Yunnan, China
    Wei Ding, Xuemei Li, Changli Jiang, Yue Zhang & Lan Wang
  2. Department of Orthopedics, Kunming General Hospital of Chinese People’s Liberation Army, Daguan Road, Kunming, 650032, Yunnan, China
    Hongbo Tan
  3. Department of Clinical Hematology, Third Military Medical University, Chongqing, 400038, China
    Chen Zhao
  4. Division of Cellular and Molecular Diagnostics, Center of Laboratory Medicine, Chengdu Military General Hospital, Chengdu, 610083, Sichuan, China
    Zhiqiang Li

Authors

  1. Wei Ding
  2. Hongbo Tan
  3. Chen Zhao
  4. Xuemei Li
  5. Zhiqiang Li
  6. Changli Jiang
  7. Yue Zhang
  8. Lan Wang

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Correspondence toWei Ding.

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All specimens were collected in accordance with informed consents of patients, and all procedures complied with the protocol approved by the Ethical Committee of Kunming General Hospital.

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Ding, W., Tan, H., Zhao, C. et al. MiR-145 suppresses cell proliferation and motility by inhibiting ROCK1 in hepatocellular carcinoma.Tumor Biol. 37, 6255–6260 (2016). https://doi.org/10.1007/s13277-015-4462-3

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