Expression of GLP-1R protein and its clinical role in intrahepatic cholangiocarcinoma tissues

Mol Biol Rep. 2014 Jul;41(7):4313-20. doi: 10.1007/s11033-014-3302-7. Epub 2014 Feb 28.

Abstract

The study investigates the expression and clinical role of GLP-1R in intrahepatic cholangiocarcinoma (ICC) tissues. ICC tissue, tissue around tumour and normal liver tissue samples from 176 ICC patients were investigated for GLP-1R expression by immunohistochemistry and western blots. Expression levels were correlated to clinical variables and to the postoperative outcome. High GLP-1R expression levels were detected in tumor tissue samples. Kaplan-Meier method was used for survival analysis of patients follow-up data. Results showed that median survival time of patients with high GLP-1R positive expression in ICC tissue were 22 months. Median survival time of patients with low GLP-1R positive expression in ICC tissue were 19.8 months. There wasn't statistical difference (p = 0.332) between two groups. Immunohistochemistry semi-quantitative analysis showed that tissue differentiation is not prognostic risk factors. In patients with GLP-1R positive expression in ICC tissue, lymph node metastasis was important prognostic factors (p = 0.001). Although statistical analysis showed that GLP-1R can not be judged as a risk prognostic factors, GLP-1 might become a new target for therapy of ICC.

MeSH terms

  • Adult
  • Aged
  • Bile Duct Neoplasms / genetics*
  • Bile Duct Neoplasms / mortality
  • Bile Duct Neoplasms / pathology
  • Bile Ducts, Intrahepatic / metabolism*
  • Bile Ducts, Intrahepatic / pathology
  • Cholangiocarcinoma / genetics*
  • Cholangiocarcinoma / mortality
  • Cholangiocarcinoma / pathology
  • Female
  • Gene Expression
  • Glucagon-Like Peptide-1 Receptor
  • Humans
  • Immunohistochemistry
  • Lymphatic Metastasis
  • Male
  • Middle Aged
  • Receptors, Glucagon / genetics*
  • Receptors, Glucagon / metabolism
  • Survival Analysis
  • Tumor Microenvironment / genetics

Substances

  • GLP1R protein, human
  • Glucagon-Like Peptide-1 Receptor
  • Receptors, Glucagon