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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">ssmu</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень сибирской медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Siberian Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-0363</issn><issn pub-type="epub">1819-3684</issn><publisher><publisher-name>Siberian State Medical University, the Ministry of Healthcare of the Russian Federation</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20538/1682-0363-2019-3-226-231</article-id><article-id custom-type="elpub" pub-id-type="custom">ssmu-2420</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>СЛУЧАЙ ИЗ КЛИНИЧЕСКОЙ ПРАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Сочетание мутаций генов BRAF и NRAS в пределах одной опухоли у пациентов с меланомой кожи</article-title><trans-title-group xml:lang="en"><trans-title>The combination of mutations in BRAF and NRAS genes within a one tumor in patients with cutaneous melanoma</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7660-700X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аксененко</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Aksenenko</surname><given-names>M. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. мед. наук, доцент, кафедра патологической физиологии, </p><p>660022, г. Красноярск, ул. Партизана Железняка, 1</p></bio><bio xml:lang="en"><p>PhD, Assistant of Professor, Department of Pathological Physiology,</p><p>1, P. Zheleznyaka Str., Krasnoyarsk, 660022</p></bio><email xlink:type="simple">aksenenko_mariya@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1284-6711</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аверчук</surname><given-names>А. С</given-names></name><name name-style="western" xml:lang="en"><surname>Averchuk</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. биол. наук, доцент, кафедра патологической физиологии,</p><p>660022, г. Красноярск, ул. Партизана Железняка, 1</p></bio><bio xml:lang="en"><p>PhD, Assistant of Professor, Department of Pathological Physiology,</p><p>1, P. Zheleznyaka Str., Krasnoyarsk, 660022</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8142-4283</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рукша</surname><given-names>Т. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ruksha</surname><given-names>T. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р мед. наук, зав. кафедрой патологической физиологии,</p><p>660022, г. Красноярск, ул. Партизана Железняка, 1</p></bio><bio xml:lang="en"><p>DM, Head of Department of Pathophysiology,</p><p>1, P. Zheleznyaka Str., Krasnoyarsk, 660022</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Красноярский государственный медицинский университет им. проф. В.Ф. Войно-Ясенецкого&#13;
(КрасГМУ им. проф. В.Ф. Войно-Ясенецкого)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Krasnoyarsk State Medical University n.a. prof. V.F. Voyno-Yasenetsky (KrasSMU n.a. prof. V.F. Voyno-Yasenetsky)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>27</day><month>10</month><year>2019</year></pub-date><volume>18</volume><issue>3</issue><fpage>226</fpage><lpage>231</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Аксененко М.Б., Аверчук А.С., Рукша Т.Г., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Аксененко М.Б., Аверчук А.С., Рукша Т.Г.</copyright-holder><copyright-holder xml:lang="en">Aksenenko M.B., Averchuk A.S., Ruksha T.G.</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://bulletin.ssmu.ru/jour/article/view/2420">https://bulletin.ssmu.ru/jour/article/view/2420</self-uri><abstract><p>До недавнего времени считалось, что мутации в генах BRAF и NRAS являются взаимоисключающими и не встречаются в пределах одной опухоли. В последующем было выявлено, что данные мутации могут наблюдаться вместе, но это по-прежнему является достаточно редким явлением.</p><p>Цель исследования – определить возможность сочетания взаимоисключающих мутаций в генах BRAF и NRAS и проанализировать взаимосвязь мутационного статуса опухоли с экспрессией немутантного белка NRAS.</p><sec><title>Материалы и методы</title><p>Материалы и методы. Определение мутации BRAF V600E в опухоли проводилось методом полимеразной цепной реакции в режиме реального времени, а во 2-м и 3-м экзоне гена NRAS – методом секвенирования по Сенгеру. Оценка экспрессии белка NRAS дикого типа осуществлялась методом иммуногистохимии.</p></sec><sec><title>Результаты</title><p>Результаты. Выявлены мутации в 15-м экзоне гена BRAF c.1799T&gt;A (V600E) и во 2-м экзоне гена NRAS p.G13S (с.37 G&gt;A). Уровень экспрессии не мутантного белка NRAS в обоих случаях различался. У одного пациента, несмотря на наличие мутации в гене NRAS, в менее чем 5% опухолевых клеток нормальный белок не экспрессировался.</p></sec><sec><title>Заключение</title><p>Заключение. Данный феномен можно связать с возможными эпигенетическими нарушениями экспрессии генов на посттранскрипционном уровне. </p></sec></abstract><trans-abstract xml:lang="en"><p>The paper provides a clinical description and analysis of two melanoma cases with mutations in the BRAF and NRAS gene within one tumor. Until recently, it was believed that mutations in the BRAF and NRAS genes are exclusive and do not occur within the same tumor. Later it was revealed that these mutations can exist within one tumor, but this is still quite a rare phenomenon. Molecular genetic analysis of the tumor obtained from both patients showed a mutation in the 15 exon of the BRAF gene c.1799T&gt;A (V600E) and exon 2 of the NRAS p.G13S gene (p.37 G&gt;A). The expression level of non-mutant NRAS protein was different in both cases. In conclusion, so in one patient, despite the presence of a mutation in the NRAS gene, the level of expression of the non-mutant protein was absent, which can be related to possible posttranscriptional disorders in the regulation of gene expression.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>меланома кожи</kwd><kwd>BRAF</kwd><kwd>NRAS</kwd><kwd>мутации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>melanoma of the skin</kwd><kwd>BRAF</kwd><kwd>NRAS</kwd><kwd>mutations</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа поддержана госзаданием «Разработка методов детекции и идентификация мутаций гена cKIT на основе технологий ПЦР в реальном времени и секвенирования для выбора средств персонифицированной терапии меланомы».</funding-statement><funding-statement xml:lang="en">This work was supported by the state assignment “Development of detection methods and identification of cKIT gene mutations based on real-time PCR and sequencing technologies for choosing personalized melanoma therapy”.</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">Sun Y., Liu W.Z., Liu T., Feng X., Yang N., Zhou H.F. 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