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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Biotherapy</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Biotherapy</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский биотерапевтический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-9784</issn><issn publication-format="electronic">1726-9792</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">892</article-id><article-id pub-id-type="doi">10.17650/1726-9784-2017-16-4-38-45</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Clinical assessement of the 8 genes on chromosome 3 with also MGMT gene promoter regions methylaton status in patients with breast cancer luminal hystotype</article-title><trans-title-group xml:lang="ru"><trans-title>Клиническая оценка профиля метилирования промоторных областей 8 генов хромосомы 3 и гена MGMT при люминальном типе рака молочной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ryabchikov</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Рябчиков</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>r.denisr@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vorotnikov</surname><given-names>I. K.</given-names></name><name xml:lang="ru"><surname>Воротников</surname><given-names>И. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kazubskaya</surname><given-names>T. P.</given-names></name><name xml:lang="ru"><surname>Казубская</surname><given-names>Т. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lukina</surname><given-names>S. S.</given-names></name><name xml:lang="ru"><surname>Лукина</surname><given-names>С. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Filippova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Филиппова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Burdennyy</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Бурденный</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Loginov</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Логинов</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin National Medical Research Center of Oncology</institution></aff><aff><institution xml:lang="ru">ФГБУ «НМИЦ онкологии им. Н.Н. Блохина» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of General Pathology and Pathophysiology</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научно-исследовательский институт общей патологии и патофизиологии»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Research Center of Medical Genetics</institution></aff><aff><institution xml:lang="ru">ФБГНУ «Медико-генетический научный центр»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-12-30" publication-format="electronic"><day>30</day><month>12</month><year>2017</year></pub-date><volume>16</volume><issue>4</issue><fpage>38</fpage><lpage>45</lpage><history><date date-type="received" iso-8601-date="2018-04-10"><day>10</day><month>04</month><year>2018</year></date></history><permissions/><self-uri xlink:href="https://bioterapevt.abvpress.ru/jour/article/view/892">https://bioterapevt.abvpress.ru/jour/article/view/892</self-uri><abstract xml:lang="en"><p>Background. Epigenetic changes of TSG are supposed as the most fine and active genes regulation mechanism in particular breast cancer (BC) genes pathway development. The most valuable results are awaited for methylation role of genes located on the short arm of chromosome 3 with also MGMT gene (10q26) in BC pathogenesis because of their ambiguous data for methylation status in tumors. Objective: to illustrate the specific methylation role of the RASSF1A, SEMA3B, RARß2, RHOA, GPX1, USP4, DAG1, NKIRAS1 and MGMT genes promoter regions in BC pathogenesis. Materials and methods. Sample set of 174 BC patients consists of tumor and surrounding histologically normal tissue that were collected and clinically characterized in the N.N. Blokhin National Medical Research Center of Oncology. Two substantive methods were used to evaluate DNA methylation status. To analyse RASSF1A, SEMA3B, RARß2 and MGMT genes methylation we used polymerase chain reaction specific for the methylated allele. Whereas for analyses RHOA, GPX1, USP4, DAG1, NKIRAS1 promoter regions genes methylation status was used methyl sensitive restriction analyses with 2 methyl sensitive endonuclaeses HpaII and HhaI with subsequent polymerase chain reaction. Results. A statistically significant high frequency of RASSF1A, SEMA3B, RARß2, and MGMT genes methylation in epithelial breast tumors compared with histologically normal tissue from the same patients was shown. Significant correlation of RARß2 and MGMT genes methylation frequency considering the different clinical and morphological characteristics of the malignant process was revealed. The statistically significant relationship between methylation of RASSF1A, RARß2 and MGMT genes and patient survival is shown for the first time. Conclusion. The findings of epigenetic changes in the luminal BC supplement the “molecular picture” of this cancer and contribute to an understanding of its pathogenesis. The revealed features of investigated genes methylation can find clinical application for the development of modern approaches to prognosis, prevention and choice of tactics for treatment of BC in females of the Moscow region.</p></abstract><trans-abstract xml:lang="ru"><p>Введение. Эпигенетические изменения генов-супрессоров опухолевого роста рассматривают как наиболее тонкий и динамичный механизм регуляции генов, в том числе генов, вовлеченных в развитие рака молочной железы (РМЖ). Огромный интерес в изучении роли метилирования в патогенезе РМЖ представляют гены, расположенные на коротком плече хромосомы 3, и ген MGMT (10q26), для которых имеются крайне противоречивые данные об уровне их метилирования в опухолях. Цель исследования - изучение роли метилирования промоторных районов генов RASSF1A, SEMA3B, RARß2, RHOA, GPX1, USP4, DAG1, NKIRAS1 и MGMT в патогенезе эпителиальных опухолей молочной железы. Материалы и методы. Образцы опухолевой и окружающей гистологически неизмененной ткани от 174 больных РМЖ собраны и клинически охарактеризованы в ФГБУ «НМИЦ онкологии им. Н.Н. Блохина» Минздрава России. Анализ метилирования ДНК проводили с использованием 2 независимых методов. Метилирование генов RASSF1A, SEMA3B, RARß2 и MGMT изучали с помощью полимеразной цепной реакции, специфичной к метилированному аллелю. Анализ метилирования промоторных районов генов RHOA, GPX1, USP4, DAG1 и NKIRAS1 выполняли с применением 2 метилчувствительных рестриктаз - HpalI и HhaI - и последующей полимеразной цепной реакции. Результаты. Показана статистически значимо высокая частота метилирования генов RASSF1A, SEMA3B, RARß2 и MGMT в эпителиальных опухолях молочной железы по сравнению с гистологически нормальной тканью от тех же пациенток. Выявлены значимые корреляции частоты метилирования генов RARß2 и MGMT с различными клинико-морфологическими характеристиками злокачественного процесса. Впервые показана статистически значимая связь между метилированием генов RASSF1A, RARß2 и MGMT и выживаемостью пациенток. Заключение. Полученные данные об эпигенетических нарушениях при люминальном типе РМЖ дополняют «молекулярный портрет» этого вида рака и вносят вклад в понимание его патогенеза. Выявленные особенности метилирования исследованных генов могут найти клиническое применение для разработки современных подходов к прогнозированию, профилактике и выбору тактики лечения РМЖ у пациенток московского региона.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метилирование</kwd><kwd>промоторная область</kwd><kwd>CpG-островок</kwd><kwd>рак молочной железы</kwd><kwd>methylation</kwd><kwd>promoter region</kwd><kwd>CpG-island</kwd><kwd>breast cancer</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Состояние онкологической помощи населению России в 2014 году. Под ред. А.Д. Каприна, В.В. Старинского, Г.В. Петровой. 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