High PRL-3 expression in human gastric cancer is a marker of metastasis and grades of malignancies: an in situ hybridization study

Virchows Arch. 2007 Mar;450(3):303-10. doi: 10.1007/s00428-006-0361-8. Epub 2007 Jan 18.

Abstract

Phosphatase of regenerating liver (PRL)-3, encoding a 22-kD low molecular weight tyrosine phosphatase, has been reported to be associated with metastasis of colorectal carcinoma. We assessed the levels of PRL-3 mRNA expression to know whether its up-regulation was involved in progression and metastasis of gastric carcinoma. Levels of PRL-3 expression in 94 human gastric adenocarcinomas and 54 matched lymph node metastases were detected by in situ hybridization and compared with clinicopathological characteristics including prognosis. High PRL-3 expression was detected in 36.2% of primary gastric carcinoma (with nodal metastasis, 55.6%; without nodal metastasis, 10%; P < 0.001) and in 74.1% of lymph node metastases. The incidence of high PRL-3 expression in lymph node metastasis was significantly higher than in primary tumors (P < 0.044). Moreover, high expression of PRL-3 was closely associated with tumor size, lymphatic invasion, venous invasion, extent of lymph node metastasis, and tumor stage. These results suggest that high PRL-3 expression may participate in the progression and metastasis of gastric carcinoma. PRL-3 might be a novel molecular marker for aggressive gastric cancer.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenocarcinoma / genetics
  • Adenocarcinoma / metabolism*
  • Adenocarcinoma / mortality
  • Adenocarcinoma / secondary
  • Adult
  • Aged
  • Aged, 80 and over
  • Biomarkers, Tumor / genetics
  • Biomarkers, Tumor / metabolism*
  • Disease Progression
  • Female
  • Humans
  • In Situ Hybridization / methods*
  • Lymph Nodes
  • Male
  • Middle Aged
  • Neoplasm Metastasis / genetics
  • Neoplasm Metastasis / pathology
  • Neoplasm Proteins / genetics
  • Neoplasm Proteins / metabolism*
  • Neoplasm Staging
  • Protein Tyrosine Phosphatases / genetics
  • Protein Tyrosine Phosphatases / metabolism*
  • RNA, Messenger / metabolism
  • RNA, Neoplasm / analysis
  • Stomach Neoplasms / genetics
  • Stomach Neoplasms / metabolism*
  • Stomach Neoplasms / mortality
  • Stomach Neoplasms / pathology
  • Survival Rate
  • Up-Regulation

Substances

  • Biomarkers, Tumor
  • Neoplasm Proteins
  • RNA, Messenger
  • RNA, Neoplasm
  • PTP4A3 protein, human
  • Protein Tyrosine Phosphatases