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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">mes</journal-id><journal-title-group><journal-title xml:lang="ru">Экстремальная биомедицина</journal-title><trans-title-group xml:lang="en"><trans-title>Extreme Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">3033-8964</issn><issn pub-type="epub">3033-8972</issn><publisher><publisher-name>Centre for Strategic Planning of the Federal Medical and Biological Agency</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47183/mes.2021.028</article-id><article-id custom-type="elpub" pub-id-type="custom">mes-140</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Метилирование генов BCL-2, CDKN1A и ATM у лиц, подвергшихся хроническому облучению</article-title><trans-title-group xml:lang="en"><trans-title>BCL-2, CDKN1A and ATM gene methylation in chronically exposed individuals</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Блинова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Blinova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгения Андреевна Блинова</p><p>ул. Воровского, д. 68, корп. 1, г. Челябинск, 454141</p></bio><bio xml:lang="en"><p>Evgeniya A. Blinova</p><p>Vorovskogo, 68, korp. 1, Chelyabinsk, 454141</p></bio><email xlink:type="simple">blinova@urcrm.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никифоров</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikiforov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Воровского, д. 68, корп. 1, г. Челябинск, 454141</p></bio><bio xml:lang="en"><p>Vorovskogo, 68, korp. 1, Chelyabinsk, 454141</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Янишевская</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yanishevskaya</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Воровского, д. 68, корп. 1, г. Челябинск, 454141</p></bio><bio xml:lang="en"><p>Vorovskogo, 68, korp. 1, Chelyabinsk, 454141</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аклеев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Akleyev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Воровского, д. 68, корп. 1, г. Челябинск, 454141</p></bio><bio xml:lang="en"><p>Vorovskogo, 68, korp. 1, Chelyabinsk, 454141</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский научно-практический центр радиационной медицины Федерального медико-биологического агентства; Челябинский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Urals Research Center for Radiation Medicine of the Federal Medical Biological Agency; Chelyabinsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Уральский научно-практический центр радиационной медицины Федерального медико-биологического агентства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Urals Research Center for Radiation Medicine of the Federal Medical Biological Agency</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>26</day><month>10</month><year>2024</year></pub-date><volume>23</volume><issue>3</issue><fpage>11</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Блинова Е.А., Никифоров В.С., Янишевская М.А., Аклеев А.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Блинова Е.А., Никифоров В.С., Янишевская М.А., Аклеев А.В.</copyright-holder><copyright-holder xml:lang="en">Blinova E.A., Nikiforov V.S., Yanishevskaya M.A., Akleyev A.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.extrememedicine.ru/jour/article/view/140">https://www.extrememedicine.ru/jour/article/view/140</self-uri><abstract><p>Метилирование ДНК является наиболее распространенной эпигенетической модификацией, вызываемой ионизирующим излучением. При этом можно наблюдать как гиперметилирование, которое подавляет транскрипцию промоторных областей генов, так и гипометилирование, приводящее к активации генов. Оба указанных механизма могут принимать участие в канцерогенезе. Целью настоящего исследования было оценить статус метилирования СpG-островков промоторов генов защитных систем BCL-2, CDKN1A и ATM в клетках периферической крови у хронически облученных жителей прибрежных сел р. Течи (Челябинская область) в отдаленные сроки. Оценку метилирования промоторных регионов генов BCL-2, CDKN1A и ATM у 68 человек, проживающих в селах, расположенных по берегам р. Течи, проводили методом метилспецифичной ПЦР в реальном времени. В группу облученных лиц вошли 54 человека, у которых кумулятивные дозы красного костного мозга находились в диапазоне от 0,09 до 3,51 Гр. Группа сравнения состояла из 14 человек, проживающих в схожих социально-экономических условиях с накопленной дозой облучения красного костного мозга менее 70 мГр за весь период своей жизни. В результате проведенного пилотного исследования у облученных лиц в отдаленном периоде после хронического низкоинтенсивного радиационного воздействия не были выявлены значимые изменения в уровне метилирования CpG-островков промоторных регионов генов CDKN1A, BCL-2, ATM относительно группы сравнения, также не были отмечены изменения в дозовых подгруппах «от 87 до 994 мГр» и «более 1000 мГр».</p></abstract><trans-abstract xml:lang="en"><p>DNA methylation is the most common epigenetic modification, caused by ionizing radiation. There may be both hypermethylation, which suppresses transcription of gene promoter regions, and hypomethylation, resulting in gene activation. Both mechanisms may be involved in carcinogenesis. The study was aimed to assess methylation status of CpG islands in the protective system BCL-2, CDKN1A and ATM gene promoters in the peripheral blood cells of the chronically exposed individuals, living in the villages, located along the Techa River, over a long-term period. Methylation of BCL-2, CDKN1A and ATM gene promoter regions in 68 residents of the villages, located along the Techa River (Chelyabinsk region), was assessed by the real-time methylation-specific PCR. The group of exposed individuals included 54 people with accumulated dose to red bone marrow within the range of 0.09–3.51 Gy. The comparison group included 14 people, living in similar economic and social environment, with the dose to red bone marrow, accumulated during the whole life, not exceeding 70 mGy. The pilot study of exposed individuals over a long period of time after chronic low-dose radiation exposure revealed no significant changes in methylation levels of CpG islands in the CDKN1A, BCL-2, ATM gene promoter regions compared to the comparison group. None were revealed in the dose subgroups “87–994 mGy” and “over 1000 mGy”.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метилирование ДНК</kwd><kwd>CpG-островки</kwd><kwd>отдаленные эффекты облучения</kwd><kwd>хроническое облучение</kwd><kwd>метилспецифичная ПЦР</kwd></kwd-group><kwd-group xml:lang="en"><kwd>DNA methylation</kwd><kwd>CpG islands</kwd><kwd>long-term effects of exposure</kwd><kwd>chronic exposure</kwd><kwd>methylation-specific PCR</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование в рамках государственного задания Федерального медико-биологического агентства России «Состояние клеточного иммунитета человека в период реализации отдаленных эффектов хронического радиационного воздействия» (27.002.20.800).</funding-statement><funding-statement xml:lang="en">The study was carried out within the framework of the State assignment of Russian Federal Medical Biological Agency “Human Cell-Mediated Immunity During Realization of Chronic Radiation Exposure Late Effects” (code 27.002.20.800).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Spainhour JC, Lim HS, Yi SV, Qiu P. 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