miR-27b inhibits gastric cancer metastasis by targeting NR2F2

Qingzhao Feng1, Xionglin Wu2, Fuchao Li3

  • 1Department of General Surgery, The Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China. izaobao@vip.qq.com.

Protein & Cell
|November 16, 2016
PubMed

Insights

Nuclear receptor subfamily 2 (NR2F2) is upregulated in gastric cancer, promoting tumor growth. MicroRNA-27b acts as a tumor suppressor, and its down-regulation by NR2F2 indicates poor patient survival.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are increasingly recognized for their role in cancer development, often through down-regulation.
  • Nuclear receptor subfamily 2 (NR2F2), also known as COUP-TFII, is implicated in various cancers, but its specific function in gastric cancer is not well understood.

Purpose of the Study:

  • To investigate the role of NR2F2 and its potential interaction with microRNAs in gastric cancer.
  • To determine the prognostic significance of NR2F2 expression in gastric cancer patients.

Main Methods:

  • Utilized Oncomine and Kaplan-Meier databases to analyze NR2F2 expression and survival data.
  • Investigated the regulatory relationship between NR2F2 and microRNA-27b in gastric cancer cells and tissues.
  • Assessed the functional impact of miR-27b on gastric cancer cell proliferation, migration, invasion, and metastasis in vitro and in vivo.

Main Results:

  • NR2F2 was found to be significantly upregulated in gastric cancer, with high expression correlating with poorer patient survival.
  • NR2F2 was identified as a direct regulator that down-regulates microRNA-27b (miR-27b) in gastric cancer.
  • Overexpression of miR-27b suppressed gastric cancer cell proliferation and tumor growth, while also inhibiting migration and invasion.
  • Down-regulation of miR-27b promoted proliferation and metastasis of gastric cancer cells.

Conclusions:

  • miR-27b functions as a tumor suppressor in gastric cancer.
  • NR2F2-mediated down-regulation of miR-27b contributes to gastric cancer progression.
  • miR-27b holds potential as a biomarker for predicting survival in gastric cancer patients.

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