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LncRNA NR2F2-AS1 functions as a tumor suppressor in gastric cancer through targeting miR-320b/PDCD4 pathway

Ming Luo1, Shuangya Deng1, Tong Han1

  • 1Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, PR China.

Histology and Histopathology
|January 20, 2022
PubMed

Insights

The long non-coding RNA NR2F2-AS1 inhibits gastric cancer progression by downregulating PDCD4 expression through the miR-320b pathway. This finding suggests NR2F2-AS1 as a potential therapeutic target for gastric carcinoma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Gastric cancer is a leading cause of cancer mortality globally.
  • Long non-coding RNAs (lncRNAs) play crucial roles in cancer development.
  • NR2F2-AS1 is implicated in inhibiting various malignant tumors, but its role in gastric cancer is unclear.

Purpose of the Study:

  • To investigate the function and mechanism of NR2F2-AS1 in gastric cancer.
  • To elucidate the regulatory network involving NR2F2-AS1, miR-320b, and PDCD4 in gastric carcinoma.

Main Methods:

  • Quantitative real-time PCR to assess NR2F2-AS1 expression.
  • Cell proliferation, migration, invasion, and apoptosis assays.
  • Western blotting to detect protein expression.
  • MiR-320b mimic and inhibitor transfection.
  • Luciferase reporter assays to confirm target interactions.

Main Results:

  • NR2F2-AS1 expression was significantly downregulated in gastric cancer tissues and cells.
  • Overexpression of NR2F2-AS1 suppressed gastric cancer cell proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT), while promoting apoptosis.
  • NR2F2-AS1 acted as a molecular sponge for miR-320b, inhibiting its activity.
  • PDCD4 was identified as a direct target of miR-320b.
  • NR2F2-AS1 exerted its tumor-suppressive effects by downregulating PDCD4 via sponging miR-320b.

Conclusions:

  • NR2F2-AS1 functions as a tumor suppressor in gastric cancer.
  • The NR2F2-AS1/miR-320b/PDCD4 axis plays a critical role in regulating gastric cancer progression.
  • NR2F2-AS1 holds potential as a novel therapeutic target for gastric cancer treatment.

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