Molecular mechanisms in Barrett's metaplasia and its progression

Semin Oncol. 2007 Apr;34(2 Suppl 1):S2-6. doi: 10.1053/j.seminoncol.2007.01.005.

Abstract

The dramatic increase in the incidence and poor overall survival rates of esophageal/gastroesophageal junction adenocarcinoma underscore the necessity to discover molecular markers that can be used for risk assessment, early diagnosis, and targeted therapeutic intervention. Barrett's esophagus (BE) is proposed to represent a precursor of esophageal/gastroesophageal junction adenocarcinoma. BE progression to invasive cancer is defined by a metaplasia-dysplasia-carcinoma progression characterized by an increasing accumulation of genetic changes associated with alterations in molecular gatekeepers of cell circuitries and tissue homeostasis. Using a combination of in situ tissue-based and high-throughput analyses, we investigated alterations of cell-cycle regulators and inflammation-associated molecular effectors. Our data suggest a potential synergistic effect of these alterations for the BE progression to cancer, and underscore the potential use of these markers: (1) in molecular panels assessing cancer risk in BE patients; and (2) as potential therapeutic targets for chemopreventive interventions and to enhance response to anti-neoplastic therapies.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenocarcinoma / pathology
  • Barrett Esophagus / pathology*
  • Biomarkers, Tumor / analysis*
  • Cell Transformation, Neoplastic / pathology
  • Chemoprevention
  • Cyclin D1 / physiology
  • Disease Progression
  • Early Diagnosis
  • Esophageal Neoplasms / pathology*
  • Humans
  • Metaplasia
  • NF-kappa B / physiology
  • Precancerous Conditions / pathology*
  • Risk Assessment
  • Signal Transduction / physiology
  • Treatment Outcome

Substances

  • Biomarkers, Tumor
  • NF-kappa B
  • Cyclin D1