Correlation between loss of Bcl-XL expression and improved prognosis in advanced esophageal cancer treated by preoperative chemoradiotherapy

Eur Surg Res. 2008;41(3):260-6. doi: 10.1159/000141515. Epub 2008 Jun 26.

Abstract

We investigated the clinical significance of the apoptosis- related molecule expression of tumor cells in patients with advanced esophageal cancer treated with preoperative chemoradiotherapy (CRT). Preoperative CRT reduced Bcl-X(L) expression in a significant proportion of the group responding to CRT but not in the group resisting CRT, although Bcl-2 expression was reduced in both groups. The mean survival time of the patients with cancers that lost Bcl-X(L) following CRT was significantly longer compared to those with cancers expressing Bcl-X(L). These results suggested that CRT reduced Bcl-X(L) expression, and this decrease closely correlated with the prolonged survival of advanced esophageal cancer patients treated with preoperative CRT.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Antineoplastic Agents / therapeutic use
  • Apoptosis / genetics
  • Base Sequence
  • Caspase 3 / genetics
  • Caspase 8 / genetics
  • Chemotherapy, Adjuvant
  • Combined Modality Therapy
  • DNA Primers / genetics
  • Docetaxel
  • Esophageal Neoplasms / genetics*
  • Esophageal Neoplasms / pathology
  • Esophageal Neoplasms / therapy*
  • Fas-Associated Death Domain Protein / genetics
  • Female
  • Gene Expression
  • Genes, bcl-2
  • Humans
  • Kaplan-Meier Estimate
  • Male
  • Middle Aged
  • Prognosis
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism
  • RNA, Neoplasm / genetics
  • RNA, Neoplasm / metabolism
  • Radiation-Sensitizing Agents / therapeutic use
  • Reverse Transcriptase Polymerase Chain Reaction
  • Taxoids / therapeutic use
  • bcl-X Protein / genetics*

Substances

  • Antineoplastic Agents
  • BCL2L1 protein, human
  • DNA Primers
  • FADD protein, human
  • Fas-Associated Death Domain Protein
  • RNA, Messenger
  • RNA, Neoplasm
  • Radiation-Sensitizing Agents
  • Taxoids
  • bcl-X Protein
  • Docetaxel
  • CASP3 protein, human
  • CASP8 protein, human
  • Caspase 3
  • Caspase 8