Elevated serum level and gene polymorphisms of TGF-beta1 in gastric cancer

J Clin Lab Anal. 2008;22(3):164-71. doi: 10.1002/jcla.20236.


Transforming growth factor (TGF)-beta1, as a candidate tumor marker, is currently of interest. In this study, serum TGF-beta1 levels in gastric cancer (GC) patients and healthy volunteers were measured using enzyme-linked immunosorbent assay (ELISA). In addition, single nucleotide polymorphisms (SNPs) of the TGF-beta1 gene at codon 10 and codon 25 were identified by means of amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) and sequence analysis. Our results indicated that serum concentrations of TGF-beta1 in GC patients were significantly higher than those in the control, and positively correlated with tumor mass, invasion, metastasis, and clinical stage. The serum TGF-beta1 levels of patients recovering from radical resection were markedly lower than those before surgery. Meanwhile, no deoxyribonucleic acid (DNA) sequence variation at codon 25 of the TGF-beta1 gene was found and a TGF-beta1 gene polymorphism at codon 10 did not show obvious correlations with either TGF-beta1 expression or clinicopathological parameters of GC. Our evidence suggested that serum concentration of TGF-beta1 might be a novel tumor marker for GC and the polymorphisms of TGF-beta1 gene did not play a role as a determinant of serum TGF-beta1 concentration or as a genetic risk factor in the gastric carcinogenesis and progression.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenocarcinoma / blood*
  • Adenocarcinoma / genetics
  • Adenocarcinoma / secondary
  • Adult
  • Aged
  • Base Sequence
  • Biomarkers, Tumor / blood
  • DNA, Neoplasm / analysis
  • Disease Progression
  • Female
  • Genetic Predisposition to Disease*
  • Humans
  • Lymph Nodes / pathology
  • Male
  • Middle Aged
  • Molecular Sequence Data
  • Polymorphism, Single Nucleotide / genetics*
  • Sequence Analysis, DNA
  • Stomach Neoplasms / blood*
  • Stomach Neoplasms / genetics
  • Stomach Neoplasms / pathology
  • Transforming Growth Factor beta1 / blood*
  • Transforming Growth Factor beta1 / genetics


  • Biomarkers, Tumor
  • DNA, Neoplasm
  • Transforming Growth Factor beta1