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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Genetics</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0016-6758</issn><issn publication-format="electronic">3034-5103</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">667269</article-id><article-id pub-id-type="doi">10.31857/S0016675824050063</article-id><article-id pub-id-type="edn">CJJFFC</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>ГЕНЕТИКА ЧЕЛОВЕКА</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Hypermethylation in Ovarian Cancer of Long Non-Coding RNA Genes: <italic>HOTAIR</italic>, <italic>GAS5</italic>, <italic>LINC00472</italic>, <italic>LINC00886</italic>, <italic>TUG1</italic></article-title><trans-title-group xml:lang="ru"><trans-title>Гиперметилирование при раке яичников генов длинных некодирующих РНК: <italic>HOTAIR</italic>, <italic>GAS5</italic>, <italic>LINC00472</italic>, <italic>LINC00886</italic>, <italic>TUG1</italic></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Burdyonny</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Бурдённый</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>burdennyy@gmail.com</email><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><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Uroshlev</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Урошлев</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>burdennyy@gmail.com</email><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><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pronina</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Пронина</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fridman</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Фридман</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zhordania</surname><given-names>K. I.</given-names></name><name xml:lang="ru"><surname>Жорданиа</surname><given-names>К. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff3"/></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><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kushlinsky</surname><given-names>N. E.</given-names></name><name xml:lang="ru"><surname>Кушлинский</surname><given-names>Н. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff3"/></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><email>burdennyy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Braga</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Брага</surname><given-names>Э. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>eleonora10_45@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of General Pathology and Pathophysiology</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт общей патологии и патофизиологии</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Vavilov Institute of General Genetics of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт общей генетики им. Вавилова Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Blokhin National Medical Research Center of Oncology</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина Министерства здравоохранения России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Research Centre for Medical Genetics</institution></aff><aff><institution xml:lang="ru">Медико-генетический научный центр им. академика Н.П. Бочкова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-05-15" publication-format="electronic"><day>15</day><month>05</month><year>2024</year></pub-date><volume>60</volume><issue>5</issue><fpage>83</fpage><lpage>94</lpage><history><date date-type="received" iso-8601-date="2025-02-26"><day>26</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0016-6758/article/view/667269">https://transsyst.ru/0016-6758/article/view/667269</self-uri><abstract xml:lang="en"><p>Recently, more and more data have been accumulating indicating the role of long non-coding RNAs (lncRNAs) in the regulation of biological processes in cells, as well as in the mechanisms of cancer development and progression. Aberrant methylation of promoter regions of both protein genes and lncRNA genes can disrupt their expression and functional activity. Using bioinformatics databases, six lncRNA genes (<italic>GAS5</italic>, <italic>HOTAIR</italic>, <italic>LINC00472</italic>, <italic>LINC00886</italic>, <italic>SNHG17</italic> and <italic>TUG1</italic>) with CpG islands, differentially expressed and presumably hypermethylated in tumors of patients with ovarian cancer (OC) were selected. A statistically significant (p &lt; 0.05) increase in the methylation level in tumours was demonstrated in a sample of 93 OC specimens using methylation-specific real-time PCR assay. Moreover, for the genes <italic>LINC00472</italic>, <italic>LINC00886</italic>, <italic>SNHG17</italic> and <italic>TUG1</italic>, hypermethylation in OC was detected for the first time. 5 genes (except <italic>SNHG17</italic>) showed a further increase in methylation levels at a more advanced stage, and 4 genes (except <italic>SNHG17</italic> and <italic>LINC00886</italic>) showed a significant association with metastasis. Using real-time RT-PCR, differential changes in the expression level of the <italic>GAS5</italic>, <italic>HOTAIR</italic>, <italic>SNHG17</italic> and TUG1 genes and a significant correlation of methylation with expression for the <italic>GAS5</italic> gene were shown. Thus, hypermethylation associated with the progression and/or development of OC was detected for six lncRNA genes, which is important for elucidating the epigenetic processes involved in the pathogenesis of OC and can be used as new biomarkers of OC.</p></abstract><trans-abstract xml:lang="ru"><p>В последнее время накапливается все больше данных, свидетельствующих о роли длинных некодирующих РНК (днРНК) в регуляции биологических процессов в клетке, а также в механизмах развития и прогрессии рака. Аберрантное метилирование промоторных участков, как белковых генов, так и генов днРНК, может нарушать их экспрессию и функциональную активность. С применением биоинформатических баз данных отобрано шесть генов днРНК (<italic>GAS5</italic>, <italic>HOTAIR</italic>, <italic>LINC00472</italic>, <italic>LINC00886</italic>, <italic>SNHG17</italic> и <italic>TUG1</italic>), имеющих CpG-островки, дифференциально экспрессируемых и предположительно гиперметилируемых в опухолях больных раком яичников (РЯ). На выборке из 93 образцов больных РЯ методом метил-специфичной ПЦР в реальном времени показано статистически значимое (p &lt; 0.05) повышение уровня метилирования в опухолях; причем, для генов <italic>LINC00472</italic>, <italic>LINC00886</italic>, <italic>SNHG17</italic> и <italic>TUG1</italic> гиперметилирование при РЯ выявлено впервые. Для пяти генов (кроме <italic>SNHG17</italic>) показано дальнейшее повышение уровня метилирования на более тяжелой стадии, и для четырех генов (кроме <italic>SNHG17</italic> и <italic>LINC00886</italic>) показана значимая связь с метастазированием. С применением ОТ-ПЦР в реальном времени показано дифференциальное изменение уровня экспрессии генов <italic>GAS5</italic>, <italic>HOTAIR</italic>, <italic>SNHG17</italic> и <italic>TUG1</italic> и значимая корреляция метилирования с экспрессией для гена <italic>GAS5</italic>. Таким образом, для шести генов днРНК обнаружено гиперметилирование, ассоциированное с прогрессией и/или развитием РЯ, что важно для выяснения эпигенетических процессов, вовлеченных в патогенез РЯ, и может быть использовано в качестве новых биомаркеров РЯ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>long non-coding RNA genes</kwd><kwd>HOTAIR</kwd><kwd>GAS5</kwd><kwd>LINC00472</kwd><kwd>LINC00886</kwd><kwd>SNHG17</kwd><kwd>TUG1</kwd><kwd>aberrant methylation</kwd><kwd>ovarian cancer</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гены длинных некодирующих РНК</kwd><kwd>HOTAIR</kwd><kwd>GAS5</kwd><kwd>LINC00472</kwd><kwd>LINC00886</kwd><kwd>SNHG17</kwd><kwd>TUG1</kwd><kwd>аберрантное метилирование</kwd><kwd>рак яичников</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>20-15-00368П</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Каприн А.Д., Старинский В.В., Шахзадова А.О. 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