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- Title
Endoglin Promoter Hypermethylation Identifies a Field Defect in Human Primary Esophageal Cancer.
- Authors
Jin, Zhe; Zhao, Zhenfu; Cheng, Yulan; Dong, Ming; Zhang, Xiaojing; Wang, Liang; Fan, Xinmin; Feng, Xianling; Mori, Yuriko; Meltzer, Stephen J.
- Abstract
BACKGROUND: Endoglin (ENG) is a 180-kilodalton transmembrane glycoprotein that functions as a component of the transforming growth factor-β receptor complex. Recently, ENG promoter hypermethylation was reported in several human cancers. METHODS: The authors examined ENG promoter hypermethylation using real-time, quantitative, methylation-speclfic polymerase chain reaction in 260 human esophageal tissues. RESULTS: ENG hypermethylation demonstrated highly discriminative receiver operating characteristic curve profiles, clearly distinguishing esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC) from nor-mal esophagus (Pc.01). It is interesting to note that ENG normalized methylation values were significantly higher in ESCC compared with normal tissue (P<.01) or EAC (P<.01). The ENG hypermethylation frequency was 46.2% in ESCC and 11.9% in normal esophageal tissue, but increased early and sequentially during EAC-associated neoplastic progression to 13.3% in Barrett metaplasia (BE), 25% in dysplastic BE, and 26.9% in frank EAC. ENG hypermethylation was significantly higher in normal esophageal tissue from patients with ESCC (mean, 0.0186) than in normal tissue from patients with EAC (mean, 0.0117; P<.05). Treatment of KYSE220 ESCC cells with the demethylating agent 5-aza-2'-deoxycytidine was found to reverse ENG methylation and reactivate ENG mRNA expression. CONCLUSIONS: Promoter hypermethylation of ENG appears to be a frequent, tissue-specific event in human ESCC and exhibits a field defect with promising biomarker potential for the early detection of ESCC. In addition, ENG hypermethylation occurs in a subset of human EAC, and early during BE-associated esophageal neoplastic progression.
- Subjects
ENDOGLIN; PROMOTERS (Genetics); METHYLATION; ESOPHAGEAL cancer; MEMBRANE proteins; SQUAMOUS cell carcinoma
- Publication
Cancer (0008543X), 2013, Vol 119, Issue 20, p3604
- ISSN
0008-543X
- Publication type
Article
- DOI
10.1002/cncr.28276