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FAT4 functions as a tumour suppressor in gastric cancer by modulating Wnt/β-catenin signalling

Jian Cai1,2, Dan Feng3, Liang Hu1

  • 1Department of General Surgery, Institute of Anal-Colorectal Surgery, No. 150 Central Hospital of PLA, No. 2, Huaxiaxi Road, Luoyang 471031, China.

British Journal of Cancer
|December 4, 2015
PubMed
Abstract

Insights

FAT4 acts as a tumor suppressor in gastric cancer by inhibiting Wnt/β-catenin signaling. Its downregulation promotes cancer growth and metastasis, suggesting FAT4 as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • FAT4, a cadherin-related protein, exhibits tumor suppressor functions.
  • The specific role of FAT4 in human gastric cancer pathogenesis is largely unexplored.

Purpose of the Study:

  • To investigate the role of FAT4 in gastric cancer.
  • To elucidate the molecular mechanisms underlying FAT4's function in gastric cancer.

Main Methods:

  • FAT4 expression analyzed via immunohistochemistry, western blotting, and qRT-PCR.
  • Functional assays (MTT, migration, invasion) assessed FAT4 silencing effects in vitro and in vivo (mouse xenograft model).

Main Results:

  • Reduced FAT4 expression in gastric cancer correlates with lymph-node metastasis and poorer survival.
  • FAT4 silencing enhanced gastric cancer cell proliferation, migration, and invasion by activating Wnt/β-catenin signaling and inducing epithelial-to-mesenchymal transition (EMT).
  • In vivo studies confirmed FAT4 silencing promotes tumor growth and metastasis.

Conclusions:

  • FAT4 functions as a tumor suppressor in gastric cancer.
  • FAT4 modulates Wnt/β-catenin signaling, impacting cancer progression.
  • FAT4 represents a potential therapeutic target for gastric cancer treatment.

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