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Genetic susceptibility on CagA-interacting molecules and gene-environment interaction with phytoestrogens: a putative

Jae Jeong Yang1, Lisa Y Cho, Kwang-Pil Ko

  • 1Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea.

Plos One
|March 3, 2012
PubMed
Abstract

Insights

Genes SRC, c-MET, and CRK are linked to gastric cancer risk. The CRK gene

Area of Science:

  • Genetics
  • Oncology
  • Molecular Biology

Background:

  • Gastric cancer is a significant global health concern.
  • Helicobacter pylori CagA protein is a key virulence factor in gastric carcinogenesis.
  • Genes encoding CagA-interacting molecules are potential risk factors for gastric cancer.

Purpose of the Study:

  • To investigate the association between seven CagA-interacting molecule genes (SRC, PTPN11, CRK, CRKL, CSK, c-MET, GRB2) and gastric cancer risk.
  • To determine if phytoestrogens modify the risk of gastric cancer associated with these genes.

Main Methods:

  • Candidate single nucleotide polymorphisms (SNPs) in seven genes were analyzed in a Korean cohort.
  • Case-control study involving 462 gastric cancer cases and 670 controls.
  • Pooled and meta-analysis were used to estimate odds ratios (ORs) for gastric cancer risk.
  • Plasma phytoestrogen concentrations were measured.

Main Results:

  • SNPs in SRC (rs6122566, rs6124914), c-MET (rs41739), and CRK (rs7208768) were significantly associated with gastric cancer risk.
  • The risk allele of CRK rs7208768 showed increased gastric cancer risk at low phytoestrogen levels.
  • No significant heterogeneity was observed in the meta-analysis.

Conclusions:

  • SRC, c-MET, and CRK genes play a role in gastric carcinogenesis through modulation of CagA signal transduction.
  • The interaction between the CRK gene and phytoestrogens influences gastric cancer risk.
  • These findings highlight potential genetic and environmental factors in gastric cancer development.

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