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Ohnishi I, Iwashita Y, Matsushita Y, Ohtsuka S, Yamashita T, Inaba K, Fukazawa A, Ochiai H, Matsumoto K, Kurono N, Matsushima Y, Mori H, Suzuki S, Suzuki S, Tanioka F, Sugimura H. Mass spectrometric profiling of DNA adducts in the human stomach associated with damage from environmental factors. Genes Environ 2021; 43:12. [PMID: 33836837 PMCID: PMC8034090 DOI: 10.1186/s41021-021-00186-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/27/2021] [Indexed: 02/07/2023] Open
Abstract
Background A comprehensive understanding of DNA adducts, one of the most plausible origins of cancer mutations, is still elusive, especially in human tissues in clinical settings. Recent technological developments have facilitated the identification of multiple DNA adducts in a single experiment. Only a few attempts toward this “DNA adductome approach” in human tissues have been reported. Geospatial information on DNA adducts in human organs has been scarce. Aim Mass spectrometry of human gastric mucosal DNA was performed to identify DNA adducts associated with environmental factors. Materials and methods From 59 subjects who had received gastrectomy for gastric cancer, 306 samples of nontumor tissues and 15 samples of tumors (14 cases) were taken for DNA adductome analysis. Gastric nontumor tissue from autopsies of 7 subjects without gastric cancer (urothelial cancer, hepatocellular carcinoma, lung cancer each; the other four cases were without any cancers) was also investigated. Briefly, DNA was extracted from each sample with antioxidants, digested into nucleosides, separated by liquid chromatography, and then electrospray-ionized. Specific DNA adducts were identified by mass/charge number and column retention time compared to standards. Information on lifestyle factors such as tobacco smoking and alcohol drinking was taken from the clinical records of each subject. Results Seven DNA adducts, including modified bases, C5-methyl-2′-deoxycytidine, 2′-deoxyinosine, C5-hydroxymethyl-2′-deoxycytidine, N6-methyl-2′-deoxyadenosine, 1,N6-etheno-2′-deoxyadenosine, N6-hydroxymethyl-2′-deoxyadenosine, and C8-oxo-2′-deoxyguanosine, were identified in the human stomach and characterized. Intraindividual differences according to the multiple sites of these adducts were noted but were less substantial than interindividual differences. N6-hydroxymethyl-2′-deoxyadenosine was identified in the human stomach for the first time. The amount of C5-hydroxymethyl-2′-deoxycytidine was higher in the stomachs of subjects without gastric cancer than in the nontumor and tumor portions of the stomach in gastric cancer patients. Higher levels of 1,N6-etheno-2′-deoxyadenosine were detected in the subjects who reported both smoking and drinking than in those without these habits. These DNA adducts showed considerable correlations with each other. Conclusions We characterized 7 DNA adducts in the nontumor portion of the human stomach in both gastric cancer subjects and nongastric cancer subjects. A reduction in C5-hydroxymethyl-dC even in the nontumor mucosa of patients with gastric cancer was observed. Smoking and drinking habits significantly influenced the quantity of one of the lipid peroxidation-derived adducts, etheno-dA. A more expansive DNA adductome profile would provide a comprehensive understanding of the origin of human cancer in the future. Supplementary Information The online version contains supplementary material available at 10.1186/s41021-021-00186-2.
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Affiliation(s)
- Ippei Ohnishi
- Department of Tumor Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan.,Pathology Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Yuji Iwashita
- Department of Tumor Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan.
| | - Yuto Matsushita
- Department of Tumor Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan.,Department of Urology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Shunsuke Ohtsuka
- Department of Tumor Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan.,Hamamatsu Medical Center, 328 Tomitsuka-cho, Naka-ku, Hamamatsu, Shizuoka, 432-8580, Japan
| | - Takashi Yamashita
- Department of Tumor Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan.,First Department of Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Keisuke Inaba
- Surgery Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Atsuko Fukazawa
- Surgery Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Hideto Ochiai
- Surgery Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Keigo Matsumoto
- Surgery Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Nobuhito Kurono
- Department of Chemistry, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Yoshitaka Matsushima
- Department of Agricultural Chemistry, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo, 156-8502, Japan
| | - Hiroki Mori
- Hamamatsu Medical Center, 328 Tomitsuka-cho, Naka-ku, Hamamatsu, Shizuoka, 432-8580, Japan
| | - Shioto Suzuki
- Pathology Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Shohachi Suzuki
- Surgery Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Fumihiko Tanioka
- Pathology Division, Iwata City Hospital, 512-3 Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Haruhiko Sugimura
- Department of Tumor Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan.
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Matsuda T, Tao H, Goto M, Yamada H, Suzuki M, Wu Y, Xiao N, He Q, Guo W, Cai Z, Kurabe N, Ishino K, Matsushima Y, Shinmura K, Konno H, Maekawa M, Wang Y, Sugimura H. Lipid peroxidation-induced DNA adducts in human gastric mucosa. Carcinogenesis 2012; 34:121-7. [PMID: 23066087 DOI: 10.1093/carcin/bgs327] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
DNA adducts are a major cause of DNA mutation and DNA mutation-related diseases, but the simultaneous identification of multiple DNA adducts has been a challenge for a decade. An adductome approach using consecutive liquid chromatography and double mass spectrometry after micrococcal nuclease treatment has paved the way to demonstrations of numerous DNA adducts in a single experiment and is expected to contribute to the comprehensive understanding of overall environmental and endogenous exposures to possible mutagens in individuals. In this report, we applied an adductome approach to gastric mucosa samples taken at the time of a gastrectomy for gastric cancer in Lujiang, China, and in Hamamatsu, Japan. Seven lipid peroxidation-related DNA adducts [1,N6-etheno-2'-deoxyadenosine, butanone-etheno-2'-deoxycytidine (BεdC), butanone-etheno-2'-deoxy-5-methylcytidine, butanone-etheno-2'-deoxyadenosine (BεdA), heptanone-etheno-2'-deoxycytidine, heptanone-etheno-2'-deoxyadenosine (HεdA) and heptanone-etheno- 2'-deoxyguanosine] were identified in a total of 22 gastric mucosa samples. The levels of these adducts ranged from 0 to 30,000 per 10(9) bases. Although the presence of Helicobacter pylori DNA in the mucosa was not related to these adducts level, the levels of BεdC, BεdA and HεdA were higher in the Japanese gastric mucosa samples. The profiles of these 7 adduct levels among the 21 cases were capable of discriminating between the possible origins (China or Japan) of the gastric mucosa samples. Our report is the first demonstration of lipid peroxidation-related DNA adducts in the human stomach, and these observations warrant further investigation in the context of the significance of DNA adducts in human gastric carcinogenesis.
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Affiliation(s)
- Tomonari Matsuda
- Research Center for Environmental Quality Management, Kyoto University, Otsu, Shiga 520-0811, Japan
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Agudo A, Peluso M, Munnia A, Luján-Barroso L, Sánchez MJ, Molina-Montes E, Sánchez-Cantalejo E, Navarro C, Tormo MJ, Chirlaque MD, Barricarte A, Ardanaz E, Amiano P, Dorronsoro M, Quirós JR, Piro S, Bonet C, Sala N, González CA. Aromatic DNA adducts and risk of gastrointestinal cancers: a case-cohort study within the EPIC-Spain. Cancer Epidemiol Biomarkers Prev 2012; 21:685-92. [PMID: 22315368 DOI: 10.1158/1055-9965.epi-11-1205] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Colorectal (CRC) and gastric cancer (GC) are associated with meat intake and tobacco smoke, maybe because of aromatic compounds occurring in tobacco smoking and formed during cooking meat. Activated metabolites of these compounds may bind to DNA forming bulky adducts. METHODS Forty-eight subjects diagnosed of GC and 154 of CRC during a 7-year follow-up period in the European Prospective Investigation into Cancer and Nutrition-Spain cohort were compared with a sample of 296 subjects using a case-cohort approach. Aromatic adducts to DNA from leukocytes collected at recruitment were measured by means of the (32)P-postlabeling technique. The relative risk (RR) and 95% confidence interval (CI), adjusted by relevant confounders were estimated by a modified version of Cox regression. RESULTS Using the log(2)-transformed adduct concentration, we observed a RR = 1.57 (CI: 1.25-1.97) for CRC, which means a 57% increased risk associated with doubling the level of adducts, and 47% (RR = 1.47, CI: 1.07-2.00) increase in risk of GC. The association was more marked for colon than for rectal tumors. CONCLUSIONS The level of aromatic adducts in the DNA is independently associated with an increased risk of gastric and CRCs. This effect could be due to aromatic compounds present in tobacco smoke or formed in meat, but they could be also due to genotoxic compounds from other sources. IMPACT Sources of aromatic compounds should be taken into account, in addition to known risk factors, in the research and prevention of tumors of the stomach, colon, and rectum.
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Affiliation(s)
- Antonio Agudo
- Unit of Nutrition, Environment and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology (ICO), Av. Gran Via 199-203, L'Hospitalet de Llobregat, Spain.
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