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MicroRNA-493 suppresses hepatocellular carcinoma tumorigenesis through down-regulation of anthrax toxin receptor 1

Yuqiang Xu1, Kuikui Ge2, Junhao Lu1

  • 1State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, China.

Biomedicine & Pharmacotherapy = Biomedecine & Pharmacotherapie
|June 27, 2017
PubMed

Insights

MicroRNA-493 (miR-493) is downregulated in hepatocellular carcinoma (HCC). Restoring miR-493 inhibits HCC cell growth, migration, and invasion, suggesting its potential as a therapeutic target for liver cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Hepatocellular carcinoma (HCC) is a prevalent cancer with poor outcomes.
  • MicroRNAs play roles in cancer by targeting oncogenes and tumor suppressors.
  • The specific role of microRNA-493 (miR-493) in HCC remains to be fully elucidated.

Purpose of the Study:

  • To investigate the expression and function of miR-493 in hepatocellular carcinoma.
  • To identify the targets and signaling pathways regulated by miR-493 in HCC.
  • To evaluate the therapeutic potential of miR-493 in HCC.

Main Methods:

  • Quantitative real-time PCR to assess miR-493 expression in HCC cell lines and tissues.
  • In vitro assays (proliferation, colony formation, migration, invasion) to evaluate miR-493 function.
  • In vivo xenograft models to assess tumor formation.
  • Western blotting and luciferase reporter assays to confirm direct targets (ANTXR1, RSPO2) and pathway inhibition (Wnt/β-catenin).

Main Results:

  • miR-493 expression was significantly decreased in HCC cell lines and tumor tissues.
  • Overexpression of miR-493 inhibited HCC cell proliferation, colony formation, migration, and invasion in vitro.
  • miR-493 overexpression suppressed HCC tumor growth in vivo.
  • ANTXR1 and RSPO2 were identified as direct targets of miR-493, and their overexpression rescued HCC phenotypes.
  • miR-493 inhibited the Wnt/β-catenin signaling pathway.

Conclusions:

  • miR-493 functions as a tumor suppressor in hepatocellular carcinoma.
  • miR-493 inhibits HCC progression by targeting ANTXR1 and RSPO2, subsequently suppressing the Wnt/β-catenin pathway.
  • miR-493 represents a potential therapeutic target for HCC treatment.
Keywords:
ANTXR1HCCRSPO2TumorigenesisWnt pathwaymiR-493

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