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MicroRNA-145 inhibits cell proliferation by directly targeting ADAM17 in hepatocellular carcinoma

Yuwu Liu1, Chang Wu2, Ying Wang1

  • 1Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China.

Oncology Reports
|September 2, 2014
PubMed

Insights

MicroRNA-145 (miR-145) suppresses liver cancer growth by targeting ADAM17. This finding highlights miR-145 as a potential therapeutic target for hepatocellular carcinoma.

Area of Science:

  • Molecular Biology
  • Oncology
  • Gene Regulation

Background:

  • MicroRNAs (miRNAs) are crucial regulators of cellular processes.
  • Emerging evidence links miRNAs to cancer development, but their precise roles in tumorigenesis remain unclear.
  • Understanding miRNA-mediated regulatory mechanisms is vital for cancer research.

Purpose of the Study:

  • To investigate the role of miR-145 in liver cancer.
  • To identify the direct targets of miR-145 in hepatocellular carcinoma cells.
  • To elucidate the molecular mechanisms by which miR-145 affects cancer cell proliferation.

Main Methods:

  • Quantitative real-time PCR and Western blotting to measure mRNA and protein levels.
  • Dual luciferase reporter assays to confirm direct miRNA-target interactions.
  • Cell proliferation and growth assays in liver cancer cell lines (SMMC-7721, BEL-7402, Huh-7).

Main Results:

  • miR-145 significantly reduced mRNA and protein expression of A disintegrin and metalloproteinase 17 (ADAM17) in liver cancer cells.
  • ADAM17 was confirmed as a direct target of miR-145.
  • miR-145 inhibited proliferation and growth activity in SMMC-7721 cells, suggesting tumor suppressor functions.
  • Silencing ADAM17 also decreased proliferation and growth activity, and reduced MMP-9 expression.

Conclusions:

  • miR-145 inhibits liver cancer cell proliferation by directly targeting ADAM17.
  • This interaction suggests miR-145 plays a tumor-suppressive role in hepatocellular carcinoma.
  • miR-145 represents a promising therapeutic target for hepatocellular carcinoma treatment.

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