Tumor Biology

, Volume 37, Issue 5, pp 6255–6260 | Cite as

MiR-145 suppresses cell proliferation and motility by inhibiting ROCK1 in hepatocellular carcinoma

  • Wei Ding
  • Hongbo Tan
  • Chen Zhao
  • Xuemei Li
  • Zhiqiang Li
  • Changli Jiang
  • Yue Zhang
  • Lan Wang
Original Article

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.

Keyword

MiR-145 Hepatocellular carcinoma ROCK1 Proliferation Migration 

Notes

Acknowledgments

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

Compliance with ethical standards

Conflicts of interest

None

Informed consents

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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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Wei Ding
    • 1
  • Hongbo Tan
    • 2
  • Chen Zhao
    • 3
  • Xuemei Li
    • 1
  • Zhiqiang Li
    • 4
  • Changli Jiang
    • 1
  • Yue Zhang
    • 1
  • Lan Wang
    • 1
  1. 1.Department of Clinical LaboratoryKunming General Hospital, Chinese People’s Liberation ArmyKunmingChina
  2. 2.Department of OrthopedicsKunming General Hospital of Chinese People’s Liberation ArmyKunmingChina
  3. 3.Department of Clinical HematologyThird Military Medical UniversityChongqingChina
  4. 4.Division of Cellular and Molecular Diagnostics, Center of Laboratory MedicineChengdu Military General HospitalChengduChina

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