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Details

Autor(en) / Beteiligte
Titel
Frequent Loss of TIMP-3 Expression in Progression of Esophageal and Gastric Adenocarcinomas
Ist Teil von
  • Neoplasia (New York, N.Y.), 2008-06, Vol.10 (6), p.563-572
Ort / Verlag
United States: Elsevier Inc
Erscheinungsjahr
2008
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
  • Tissue inhibitor of metalloproteinase 3 (TIMP-3) promoter methylation has been linked to loss of TIMP-3 expression in various cancers. In this study, we analyzed TIMP-3 gene methylation using MethyLight assay and TIMP-3 mRNA expression using reverse transcription–polymerase chain reaction analysis in 22 esophageal cancers, 27 gastric carcinomas, and 7 cancer cell lines. We also analyzed TIMP-3 protein expression by immunohistochemistry and its association with clinicopathological characteristics in two cohorts of gastric cancer comprising a total of 347 patients. The TIMP-3 gene was more commonly methylated in adenocarcinomas of the esophagus (9/13) and stomach (9/15) than in the corresponding nonneoplastic mucosa of the esophagus (1/8; P = .024) and stomach (2/14; P = .021). In gastric cancer patients, TIMP-3 was decreased in a diffuse-type gastric cancer and in cancers with poor differentiation and was associated with poor survival (P = .04). In summary, we observed frequent TIMP-3 promoter methylation in adenocarcinomas of the esophagus and stomach and the loss of TIMP-3 expression seems to be of clinical and prognostic relevance in these cancers.

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