DNA Methylation Patterns of Ulcer-Healing Genes Associated with the Normal Gastric Mucosa of Gastric Cancers
Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key tissue-specific genes in normal gastric mucosa of healthy individuals and cancer patients was evaluated. The methylation-variable sites of 14 genes, incl...
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Published in | Journal of Korean medical science Vol. 25; no. 3; pp. 405 - 417 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Korea (South)
The Korean Academy of Medical Sciences
01.03.2010
대한의학회 |
Subjects | |
Online Access | Get full text |
ISSN | 1011-8934 1598-6357 1598-6357 |
DOI | 10.3346/jkms.2010.25.3.405 |
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Abstract | Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key tissue-specific genes in normal gastric mucosa of healthy individuals and cancer patients was evaluated. The methylation-variable sites of 14 genes, including ulcer-healing genes (TFF1, TFF2, CDH1, and PPARG), were chosen from the CpG-island margins or non-island CpGs near the transcription start sites. The healthy individuals as well as the normal gastric mucosa of 23 ulcer, 21 non-invasive cancer, and 53 cancer patients were examined by semiquantitative methylation-specific polymerase chain reaction (PCR) analysis. The ulcer-healing genes were concurrently methylated with other genes depending on the presence or absence of CpG-islands in the normal mucosa of healthy individuals. Both the TFF2 and PPARG genes were frequently undermethylated in ulcer patients. The over- or intermediate-methylated TFF2 and undermethylated PPARG genes was more common in stage-1 cancer patients (71%) than in healthy individuals (10%; odds ratio [OR], 21.9) and non-invasive cancer patients (21%; OR, 8.9). The TFF2-PPARG methylation pattern of cancer patients was stronger in the older-age group (> or =55 yr; OR, 43.6). These results suggest that the combined methylation pattern of ulcer-healing genes serves as a sensitive marker for predicting cancer-prone gastric mucosa. |
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AbstractList | Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key tissue-specific genes in normal gastric mucosa of healthy individuals and cancer patients was evaluated. The methylation-variable sites of 14 genes, including ulcer-healing genes (TFF1, TFF2, CDH1, and PPARG), were chosen from the CpG-island margins or non-island CpGs near the transcription start sites. The healthy individuals as well as the normal gastric mucosa of 23 ulcer, 21 non-invasive cancer, and 53 cancer patients were examined by semiquantitative methylation-specific polymerase chain reaction (PCR) analysis. The ulcer-healing genes were concurrently methylated with other genes depending on the presence or absence of CpG-islands in the normal mucosa of healthy individuals. Both the TFF2 and PPARG genes were frequently undermethylated in ulcer patients. The over- or intermediate-methylated TFF2 and undermethylated PPARG genes was more common in stage-1 cancer patients (71%) than in healthy individuals (10%; odds ratio [OR], 21.9) and non-invasive cancer patients (21%; OR, 8.9). The TFF2-PPARG methylation pattern of cancer patients was stronger in the older-age group (> or =55 yr; OR, 43.6). These results suggest that the combined methylation pattern of ulcer-healing genes serves as a sensitive marker for predicting cancer-prone gastric mucosa.Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key tissue-specific genes in normal gastric mucosa of healthy individuals and cancer patients was evaluated. The methylation-variable sites of 14 genes, including ulcer-healing genes (TFF1, TFF2, CDH1, and PPARG), were chosen from the CpG-island margins or non-island CpGs near the transcription start sites. The healthy individuals as well as the normal gastric mucosa of 23 ulcer, 21 non-invasive cancer, and 53 cancer patients were examined by semiquantitative methylation-specific polymerase chain reaction (PCR) analysis. The ulcer-healing genes were concurrently methylated with other genes depending on the presence or absence of CpG-islands in the normal mucosa of healthy individuals. Both the TFF2 and PPARG genes were frequently undermethylated in ulcer patients. The over- or intermediate-methylated TFF2 and undermethylated PPARG genes was more common in stage-1 cancer patients (71%) than in healthy individuals (10%; odds ratio [OR], 21.9) and non-invasive cancer patients (21%; OR, 8.9). The TFF2-PPARG methylation pattern of cancer patients was stronger in the older-age group (> or =55 yr; OR, 43.6). These results suggest that the combined methylation pattern of ulcer-healing genes serves as a sensitive marker for predicting cancer-prone gastric mucosa. Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key tissue-specific genes in normal gastric mucosa of healthy individuals and cancer patients was evaluated. The methylation-variable sites of 14 genes, including ulcer-healing genes ( TFF1 , TFF2 , CDH1 , and PPARG ), were chosen from the CpG-island margins or non-island CpGs near the transcription start sites. The healthy individuals as well as the normal gastric mucosa of 23 ulcer, 21 non-invasive cancer, and 53 cancer patients were examined by semiquantitative methylation-specific polymerase chain reaction (PCR) analysis. The ulcer-healing genes were concurrently methylated with other genes depending on the presence or absence of CpG-islands in the normal mucosa of healthy individuals. Both the TFF2 and PPARG genes were frequently undermethylated in ulcer patients. The over- or intermediate-methylated TFF2 and undermethylated PPARG genes was more common in stage-1 cancer patients (71%) than in healthy individuals (10%; odds ratio [OR], 21.9) and non-invasive cancer patients (21%; OR, 8.9). The TFF2-PPARG methylation pattern of cancer patients was stronger in the older-age group (≥55 yr; OR, 43.6). These results suggest that the combined methylation pattern of ulcer-healing genes serves as a sensitive marker for predicting cancer-prone gastric mucosa. Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key tissue-specific genes in normal gastric mucosa of healthy individuals and cancer patients was evaluated. The methylation-variable sites of 14 genes, including ulcer-healing genes (TFF1, TFF2, CDH1, and PPARG), were chosen from the CpG-island margins or non-island CpGs near the transcription start sites. The healthy individuals as well as the normal gastric mucosa of 23 ulcer, 21 non-invasive cancer, and 53 cancer patients were examined by semiquantitative methylation-specific polymerase chain reaction (PCR) analysis. The ulcer-healing genes were concurrently methylated with other genes depending on the presence or absence of CpG-islands in the normal mucosa of healthy individuals. Both the TFF2 and PPARG genes were frequently undermethylated in ulcer patients. The over- or intermediate-methylated TFF2 and undermethylated PPARG genes was more common in stage-1 cancer patients (71%) than in healthy individuals (10%; odds ratio [OR], 21.9) and non-invasive cancer patients (21%; OR, 8.9). The TFF2-PPARG methylation pattern of cancer patients was stronger in the older-age group (> or =55 yr; OR, 43.6). These results suggest that the combined methylation pattern of ulcer-healing genes serves as a sensitive marker for predicting cancer-prone gastric mucosa. Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key tissue-specific genes in normal gastric mucosa of healthy individuals and cancer patients was evaluated. The methylation-variable sites of 14 genes, including ulcer-healing genes (TFF1, TFF2, CDH1, and PPARG), were chosen from the CpG-island margins or non-island CpGs near the transcription start sites. The healthy individuals as well as the normal gastric mucosa of 23 ulcer, 21 non-invasive cancer, and 53 cancer patients were examined by semiquantitative methylation-specific polymerase chain reaction (PCR) analysis. The ulcer-healing genes were concurrently methylated with other genes depending on the presence or absence of CpG-islands in the normal mucosa of healthy individuals. Both the TFF2 and PPARG genes were frequently undermethylated in ulcer patients. The over- or intermediate-methylated TFF2 and undermethylated PPARG genes was more common in stage-1 cancer patients (71%)than in healthy individuals (10%; odds ratio [OR], 21.9) and non-invasive cancer patients (21%; OR, 8.9). The TFF2-PPARG methylation pattern of cancer patients was stronger in the older-age group (≥55 yr; OR, 43.6). These results suggest that the combined methylation pattern of ulcer-healing genes serves as a sensitive marker for predicting cancer-prone gastric mucosa. KCI Citation Count: 7 |
Author | Kim, Young-Ho Choi, Sang-Wook Hong, Seung-Jin Kang, Seok-Jin Jung, Yu-Chae Kim, Sung-Ja Seo, Eun-Joo Rhyu, Mun-Gan Kang, Moo-Il Oh, Jung-Hwan |
AuthorAffiliation | 1 Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea 3 Department of Clinical Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea 2 Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea |
AuthorAffiliation_xml | – name: 1 Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea – name: 2 Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea – name: 3 Department of Clinical Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea |
Author_xml | – sequence: 1 givenname: Seung-Jin surname: Hong fullname: Hong, Seung-Jin organization: Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 2 givenname: Jung-Hwan surname: Oh fullname: Oh, Jung-Hwan organization: Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 3 givenname: Yu-Chae surname: Jung fullname: Jung, Yu-Chae organization: Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 4 givenname: Young-Ho surname: Kim fullname: Kim, Young-Ho organization: Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 5 givenname: Sung-Ja surname: Kim fullname: Kim, Sung-Ja organization: Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 6 givenname: Seok-Jin surname: Kang fullname: Kang, Seok-Jin organization: Department of Clinical Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 7 givenname: Eun-Joo surname: Seo fullname: Seo, Eun-Joo organization: Department of Clinical Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 8 givenname: Sang-Wook surname: Choi fullname: Choi, Sang-Wook organization: Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 9 givenname: Moo-Il surname: Kang fullname: Kang, Moo-Il organization: Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea., Department of Clinical Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea – sequence: 10 givenname: Mun-Gan surname: Rhyu fullname: Rhyu, Mun-Gan organization: Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea |
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CitedBy_id | crossref_primary_10_1111_evj_13068 crossref_primary_10_1038_clpt_2012_152 crossref_primary_10_2217_epi_12_51 crossref_primary_10_2217_epi_13_17 crossref_primary_10_1002_hep_31039 crossref_primary_10_1371_journal_ppat_1003341 crossref_primary_10_1158_1940_6207_CAPR_13_0320 crossref_primary_10_1186_1471_230X_10_137 |
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Snippet | Recent evidence suggests that gastric mucosal injury induces adaptive changes in DNA methylation. In this study, the methylation status of the key... |
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SubjectTerms | Biomarkers - metabolism Cadherins - genetics CpG Islands DNA Methylation Female Gastric Mucosa - pathology Gastric Mucosa - physiology Gene Expression Regulation, Neoplastic Growth Substances - genetics Humans Male Middle Aged Neoplasm Invasiveness Original Peptides - genetics PPAR gamma - genetics Stomach Neoplasms - genetics Stomach Neoplasms - pathology Stomach Ulcer - genetics Stomach Ulcer - pathology Trefoil Factor-1 Trefoil Factor-2 Tumor Suppressor Proteins - genetics Wound Healing - genetics 의학일반 |
Title | DNA Methylation Patterns of Ulcer-Healing Genes Associated with the Normal Gastric Mucosa of Gastric Cancers |
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