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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">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25557/2073-7998.2018.07.21-29</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-529</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</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>АНАЛИЗ ИЗМЕНЕНИЙ АНОМАЛЬНОГО МЕТИЛИРОВАНИЯ ДНК В ПРОЦЕССЕ КОМПЛЕКСНОГО ЛЕЧЕНИЯ ПРИ ОСТРОМ МИЕЛОИДНОМ ЛЕЙКОЗЕ У ДЕТЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>ANALYSIS OF CHANGES  IN ABNORMAL DNA METHYLATION IN THE PROCESS  OF COMPLEX TREATMENT IN ACUTE MYELOID LEUKEMIA IN CHILDREN</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>Руденко</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rudenko</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115478.</p></bio><email xlink:type="simple">shkarupo@mail.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>Казакова</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazakova</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 119991.</p></bio><email xlink:type="simple">zalnem@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Танас</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Tanas</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115478, 117997.</p></bio><email xlink:type="simple">vstrel@list.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Попа</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Popa</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115478.</p></bio><email xlink:type="simple">apopa@list.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Немировченко</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nemirovchenko</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115478.</p></bio><email xlink:type="simple">apopa@list.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Залетаев</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaletaev</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115478, 117997, 119991.</p></bio><email xlink:type="simple">shkarupo@mail.ru</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Стрельников</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Strelnikov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва, 115478, 117997.</p></bio><email xlink:type="simple">shkarupo@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Медико-генетический научный центр»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Первый Московский государственный медицинский университет им. И.М. Сеченова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov First  Moscow State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБНУ «Медико-генетический научный центр»; Российский национальный исследовательский медицинский университет им. Н.И. Пирогова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics; Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Российский онкологический научный центр им. Н.Н. Блохина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N.N.  Blokhin  Russian Research Center for Oncology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>ФГБНУ «Медико-генетический научный центр»; Российский национальный исследовательский медицинский университет им. Н.И. Пирогова; Первый Московский государственный медицинский университет им. И.М. Сеченова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Centre for Medical Genetics; Pirogov Russian National Research Medical University; I.M. Sechenov First  Moscow State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>08</day><month>10</month><year>2018</year></pub-date><volume>17</volume><issue>7</issue><fpage>21</fpage><lpage>29</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Руденко В.В., Казакова С.А., Танас А.С., Попа А.В., Немировченко В.С., Залетаев Д.В., Стрельников В.В., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Руденко В.В., Казакова С.А., Танас А.С., Попа А.В., Немировченко В.С., Залетаев Д.В., Стрельников В.В.</copyright-holder><copyright-holder xml:lang="en">Rudenko V.V., Kazakova S.A., Tanas A.S., Popa A.V., Nemirovchenko V.S., Zaletaev D.V., Strelnikov V.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.medgen-journal.ru/jour/article/view/529">https://www.medgen-journal.ru/jour/article/view/529</self-uri><abstract><p>Нарушение распределения метилирования является функциональным событием процесса лейкемогенеза и терапевтической мишенью эпигенетических препаратов. Для идентификации аномального метилирования при остром миелоидном лейкозе (ОМЛ) у детей была разработана система мультилокусной метилчувствительной полимеразной цепной реакции (МЧ-ПЦР) для фрагментов, принадлежащих промоторным областям генов EGFLAM, TMEM176A/176B, GSG1L, CLDN7, CXCL14 и SOX8, отобранных с использованием метода непредвзятого скрининга дифференциального метилирования геномов. Система обладает чувствительностью 90-91% в отношении определения наличия злокачественного процесса, является универсальной системой маркеров ОМЛ у детей, перекрывающей всей молекулярные подтипы опухоли. Проанализированы образцы биологического материала костного мозга (КМ) 39 пациентов с ОМЛ. Курс лечения пациентов включал 4-5 блоков химиотерапии (XT), в зависимости от выставленной группы риска, а также эпигенетические препараты - ATRA и дакоген. Для пациентов с содержанием миелобластов &lt;40% — средний индекс метилирования (ИМ) составил 0,197 ± 0,181, а для пациентов с количеством миелобластных клеток &gt;40% — 0,514 ± 0,228 (р = 0,000736). В группе с низким ИМ полностью отсутствует метилирование генов CLDN7, GSGL1 и EGFLAM. На 15 день после начала первого блока химиотерапии КМ пациентов с первоначальным содержанием миелобластов &lt;40% демонстрирует полное отсутствие метилирования, содержание бластных клеток (БКМ) при этом варьирует от 0 до 40%. В группе с первоначально высоким содержанием миелобластных клеток происходит снижение среднего ИМ c 0,514 до 0,41 за счет снижения частоты метилирования генов CXCL14, TMEM176A/176B, GSGL1 и SOX8, при этом снижения частоты метилирования CLDN7и EGFLAM практически не происходит. 5-дневный курс деметилирующей терапии, сопровождается ростом содержания БКМ и выравниванием профиля метилирования при среднем количестве БКМ в обеих группах &lt;3%. С помощью разработанной системы возможна оценка злокачественной прогрессии БКМ, которые после проведения XT считаются морфологически нормальными, при этом демонстрируя профиль аномального метилирования опухолевых клеток.</p></abstract><trans-abstract xml:lang="en"><p>An aberrant DNA methylation distribution is a functional event in the process of leukemogenesis and a target of epigenetic therapy. To identify DNA methylation markers most common for any molecular subtype of pediatric acute myeloid leukemia (AML) we have applied a method of unbiased differential methylation screening of the genomes and designed  multiplex MS-PCR system of DNA methylation markers belonging to the promoter regions of the genes  EGFLAM, TMEM176A/176B, GSG1L, CLDN7, CXCL14 and SOX8. The system has a sensitivity of 90—91% for determining the malignant process. We have studied bone marrow samples  from 39 children with AML. All patients were treated by decitabine and ATRA in complex with chemotherapy (CT). Methylation index (MI) was 0.197 ± 0.181 for patients with a myeloblasts content less than 40%, and 0.514 ± 0.222 for patients with myeloblasts content more than 40% (p = 0.000736). Methylation of the CLDN7, GSGL1 and EGFLAM genes is absent  in the group with low MI. Patients with the initial content of myeloblasts less than 40% demonstrate absence of methylation on the 15th day after the start of the CT. The average MI decreases in the group with the initially high content of myeloblasts due to decrease in the frequencies of methylation of the genes CXCL14, TMEM176A/176B, GSGL1 and SOX8. The 5-day course  of demethylation therapy is accompanied by an increase in the content of blast cells and an equalization of the methylation profile. With the marker system developed it is possible to evaluate the malignant progression of blast cells, which are considered morphologically normal after CT, demonstrating at the same time the abnormal methylation profile of tumor cells.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>острый миелоидный лейкоз у детей</kwd><kwd>эпигенетические маркеры</kwd><kwd>метилирование ДНК</kwd><kwd>клональность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>acute  myeloid leukemia in children</kwd><kwd>epigenetic  markers</kwd><kwd>DNA methylation</kwd><kwd>clonality</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Li S, Mason CE, Melnick A. Genetic and epigenetic heterogeneity in acute myeloid leukemia. Curr Opin Genet Dev. 2016. 36:100-106. doi: 10.1016/j.gde.2016.03.011.</mixed-citation><mixed-citation xml:lang="en">Li S, Mason CE, Melnick A. 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