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circRASGRF2 functions as an oncogenic gene in hepatocellular carcinoma by acting as a miR-1224 sponge

Di Wu1, Anliang Xia2,3, Tianlong Fan1

  • 1Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China.

Molecular Therapy. Nucleic Acids
|December 14, 2020
PubMed

Insights

Circular RNAs (circRNAs) are implicated in hepatocellular carcinoma (HCC). This study identifies circRASGRF2 as upregulated in HCC, inhibiting proliferation and migration by sponging miR-1224 and promoting FAK expression, suggesting it as a therapeutic target.

Area of Science:

  • Molecular Biology
  • Genetics
  • Oncology

Background:

  • Circular RNAs (circRNAs) are non-coding RNAs with largely unknown roles in hepatocellular carcinoma (HCC).
  • Understanding circRNA mechanisms in HCC is crucial for developing new therapeutic strategies.

Purpose of the Study:

  • To investigate the role and molecular mechanisms of circRNAs in hepatocellular carcinoma (HCC) progression.
  • To identify specific circRNAs involved in HCC and assess their therapeutic potential.

Main Methods:

  • RNA-sequencing (RNA-seq) to compare circRNA expression in HCC and adjacent noncancerous liver (ANL) tissues.
  • Quantitative reverse transcriptase PCR for validation of circRASGRF2.
  • In vitro and in vivo assays to assess circRASGRF2 function.
  • RNA immunoprecipitation and luciferase reporter assays to elucidate molecular mechanisms.

Main Results:

  • circRASGRF2 (hsa_circ_0073181) was identified and significantly upregulated in HCC tissues and cell lines.
  • Knockdown of circRASGRF2 inhibited HCC cell proliferation and migration in vitro and in vivo.
  • circRASGRF2 promotes focal adhesion kinase (FAK) expression by sponging miR-1224.

Conclusions:

  • circRASGRF2 plays a critical role in promoting HCC progression.
  • circRASGRF2 acts as a molecular sponge for miR-1224, upregulating FAK expression.
  • circRASGRF2 represents a potential therapeutic target for hepatocellular carcinoma.
Keywords:
ceRNAcircRASGRF2circRNAshepatocellular carcinoma

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