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CircSLC3A2 functions as an oncogenic factor in hepatocellular carcinoma by sponging miR-490-3p and regulating PPM1F

Hongjian Wang1, Wei Chen2, Ming Jin3

  • 1The Fifth Department of Digestion, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China.

Molecular Cancer
|November 25, 2018
PubMed
Abstract

Insights

Circular RNA circSLC3A2 promotes hepatocellular carcinoma (HCC) by sponging miR-490-3p, which targets protein phosphatase PPM1F. This interaction impacts HCC progression and patient survival.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • Non-coding RNAs (ncRNAs) regulate gene expression in tumor progression.
  • Protein phosphatase Mg2+/Mn2+ dependent 1F (PPM1F) has a dual role in cancer.
  • Mechanisms of ncRNA regulation of PPM1F in hepatocellular carcinoma (HCC) are unclear.

Purpose of the Study:

  • Investigate the role of ncRNAs in regulating PPM1F expression in HCC.
  • Determine the clinical significance of PPM1F, miR-490-3p, and circSLC3A2 in HCC.
  • Elucidate the molecular mechanisms underlying HCC progression involving these factors.

Main Methods:

  • Analyzed TCGA RNA-sequencing data for PPM1F and miR-490-3p expression in HCC.
  • Used bioinformatic analysis, dual luciferase reporter, and RIP assays to confirm interactions between circSLC3A2, miR-490-3p, and PPM1F.
  • Performed FISH, MTT, Agar, and Transwell assays to assess cellular effects and clinical significance.

Main Results:

  • PPM1F and miR-490-3p expression correlated with poor HCC prognosis and recurrence.
  • miR-490-3p inhibited HCC cell proliferation and invasion by targeting PPM1F.
  • circSLC3A2 acted as an oncogenic factor by sponging miR-490-3p, affecting PPM1F, and correlated with poor survival.

Conclusions:

  • circSLC3A2 functions as an oncogenic factor in HCC.
  • circSLC3A2 sponges miR-490-3p, thereby regulating PPM1F expression.
  • This circSLC3A2/miR-490-3p/PPM1F axis contributes to HCC progression and poor prognosis.
Keywords:
CircSLC3A2Hepatocellular carcinomaInvasionMiR-490-3pPPM1FProliferation

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