ArticleBMC cancer2016
Gene methylation profile of gastric cancerous tissue according to tumor site in the stomach.
Article in BMC cancer, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 45 citations in OpenAlex.
- Genome-wide RNA-sequencing dataset revealsJournal of Cancer · 2023Article
- DNA Methylation of HOXA11 Gene as Prognostic Molecular Marker in Human Gastric Adenocarcinoma.Diagnostics (Basel, Switzerland) · 2022Article
- microRNA-15b-5p encapsulated by M2 macrophage-derived extracellular vesicles promotes gastric cancer metastasis by targeting BRMS1 and suppressing DAPK1 transcription.Journal of experimental & clinical cancer research : CR · 2022Article
- Identification and validation of methylated differentially expressed miRNAs and immune infiltrate profile in EBV-associated gastric cancer.Clinical epigenetics · 2021Article
- Article
- Promoter methylation of tumor-related genes as a potential biomarker using blood samples for gastric cancer detection.Oncotarget · 2017Article
- How to stomach an epigenetic insult: the gastric cancer epigenome.Nature reviews. Gastroenterology & hepatology · 2017Review
- Relationships betweenOncoTargets and therapy · 2016Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThere is considerable information on the methylation of the promoter regions of different genes involved in gastric carcinogenesis. However, there is a lack of information on how this epigenetic process differs in tumors originating at different sites in the stomach. The aim of this study is to assess the methylation profiles of the MLH1, MGMT, and DAPK-1 genes in cancerous tissues from different stomach sites.
methodsSamples were acquired from 81 patients suffering stomach adenocarcinoma who underwent surgery for gastric cancer in the Lithuanian University of Health Sciences Hospital Kaunas Clinics in 2009-2012. Gene methylation was investigated with methylation-specific PCR. The study was approved by the Lithuanian Biomedical Research Ethics Committee.
resultsThe frequencies of methylation in cancerous tissues from the upper, middle, and lower thirds of the stomach were 11.1, 23.1, and 45.4%, respectively, for MLH1; 22.2, 30.8, and 57.6%, respectively, for MGMT; and 44.4, 48.7, and 51.5%, respectively, for DAPK-1. MLH1 and MGMT methylation was observed more often in the lower third of the stomach than in the upper third (p < 0.05). In the middle third, DAPK-1 promoter methylation was related to more-advanced disease in the lymph nodes (N2-3 compared with N0-1 [p = 0.02]) and advanced tumor stage (stage III rather than stages I-II [p = 0.05]). MLH1 and MGMT methylation correlated inversely when the tumor was located in the lower third of the stomach (coefficient, -0.48; p = 0.01). DAPK-1 and MLH1 methylation correlated inversely in tumors in the middle-third of the stomach (coefficient, -0.41; p = 0.01).
conclusionGene promoter methylation depends on the gastric tumor location.
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