Forkhead Box F2 Suppresses Gastric Cancer through a Novel FOXF2-IRF2BPL-β-Catenin Signaling Axis

Akira Higashimori1,2, Yujuan Dong1,3, Yanquan Zhang1

  • 1Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease and Li Ka Shing Institute of Health Sciences, Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong.

Cancer Research
|January 28, 2018
PubMed

Insights

Forkhead box F2 (FOXF2) is silenced by DNA methylation in gastric cancer, acting as a tumor suppressor. Its methylation predicts poor survival, highlighting its role in gastric carcinogenesis.

Area of Science:

  • Oncology
  • Molecular Biology
  • Epigenetics

Background:

  • DNA methylation is a key mechanism in gastric cancer (GC) development.
  • Identifying epigenetically silenced genes offers insights into GC pathogenesis.

Purpose of the Study:

  • Investigate the role of forkhead box F2 (FOXF2) in gastric cancer.
  • Determine the clinical significance of FOXF2 methylation in GC patients.

Main Methods:

  • Genome-wide methylation analysis to identify methylated genes in GC.
  • In vitro studies (cell lines) and in vivo studies (xenografts) to assess FOXF2 function.
  • Analysis of Wnt signaling pathway components and E3 ligase interactions.
  • Multivariate Cox regression for prognostic analysis.

Main Results:

  • FOXF2 is frequently methylated and silenced in GC, inversely correlating with mRNA expression.
  • FOXF2 suppresses GC cell proliferation, promotes apoptosis, and inhibits tumor growth.
  • FOXF2 inhibits Wnt signaling by promoting β-catenin degradation via IRF2BPL.
  • FOXF2 hypermethylation is an independent predictor of poor survival in early-stage GC.

Conclusions:

  • FOXF2 functions as a tumor suppressor in gastric carcinogenesis.
  • FOXF2 methylation serves as a prognostic biomarker for gastric cancer patients.
  • The FOXF2-IRF2BPL-β-catenin axis is crucial for suppressing Wnt signaling in GC.

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