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Circular RNA profiling identifies circADAMTS13 as a miR-484 sponge which suppresses cell proliferation in

Liman Qiu1,2, Yanbing Huang1,2,3, Zhenli Li1,2

  • 1The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, China.

Molecular Oncology
|December 12, 2018
PubMed

Insights

Circular RNAs (circRNAs) are altered in hepatocellular carcinoma (HCC). CircADAMTS13 acts as a tumor suppressor by sponging miR-484, offering potential for HCC diagnosis and treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Circular RNAs (circRNAs) influence biological processes, including cancer development, via microRNA response elements.
  • circRNA expression patterns and clinical relevance in hepatocellular carcinoma (HCC) progression are not fully understood.

Purpose of the Study:

  • To identify circRNAs associated with HCC progression and elucidate their clinical significance.
  • To investigate the role of circADAMTS13 in HCC development and its underlying molecular mechanism.

Main Methods:

  • Comparative analysis of circRNA profiles in tumor and matched peritumor tissues from 10 HCC patients.
  • Clinicopathological correlation, in vitro proliferation assays, bioinformatic analysis, and luciferase reporter assays.
  • Rescue experiments to validate the interaction between circADAMTS13 and miR-484.

Main Results:

  • Identified 42 dysregulated circRNAs in HCC tissues, highlighting significant heterogeneity.
  • CircADAMTS13 was downregulated in HCC and its upregulation correlated with smaller tumor size and better prognosis.
  • Overexpression of circADAMTS13 inhibited HCC cell proliferation, acting as a tumor suppressor by sponging miR-484.

Conclusions:

  • CircADAMTS13 functions as a tumor suppressor in HCC progression.
  • CircADAMTS13 may serve as a potential diagnostic biomarker and therapeutic target for HCC via the miR-484 pathway.
Keywords:
cell proliferationcircular ADAMTS13circular RNAhepatocellular carcinomamicroRNA-484

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