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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">tumors</journal-id><journal-title-group><journal-title xml:lang="ru">Malignant tumours</journal-title><trans-title-group xml:lang="en"><trans-title>Malignant tumours</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2224-5057</issn><issn pub-type="epub">2587-6813</issn><publisher><publisher-name>Rosoncoweb</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18027/2224-5057-2019-9-1-22-28</article-id><article-id custom-type="elpub" pub-id-type="custom">tumors-612</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 REPORTS</subject></subj-group></article-categories><title-group><article-title>Влияние фактора роста нервов на количество копий онкогенов MYCC, MYCN в клетках медуллобластомы человека</article-title><trans-title-group xml:lang="en"><trans-title>The impact of the nerve growth factor on the number of MYCC, MYCN oncogene copies in human medulloblastoma cells</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>Чернов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Н. Чернов, научный сотрудник Центра доклинических и трансляционных исследований Института экспериментальной медицины</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Alexandr N. Chernov, researcher, Preclinical and Translational Research Center, Institute of Experimental Medicine</p><p>Saint Petersburg</p></bio><email xlink:type="simple">al.chernov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр им В. А. Алмазова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal State Budgetary Institution V. A. Almazov National Medical Research Center of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>10</day><month>04</month><year>2019</year></pub-date><volume>9</volume><issue>1</issue><fpage>22</fpage><lpage>28</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чернов А.Н., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Чернов А.Н.</copyright-holder><copyright-holder xml:lang="en">Chernov A.N.</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.malignanttumors.org/jour/article/view/612">https://www.malignanttumors.org/jour/article/view/612</self-uri><abstract><sec><title>Введение</title><p>Введение. Поиск новых молекулярных таргетных мишеней для химиотерапии онкологических заболеваний, в особенности интракраниальных опухолей у детей, является актуальной задачей современной онкологии. Экспрессия и амплификация онкогенов MYC часто представлена в опухолях мозга и является маркером неблагоприятного прогноза заболевания. Многие процессы онкогенеза контролируют ростовые факторы, в частности, фактор роста нервов (ФРН).</p></sec><sec><title>Цель</title><p>Цель. Изучить изменение копийности MYCCи MYCN-онкогенов в клетках медуллобластомы (МБ) при воздействии ФРН.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В статье исследуется влияние ФРН на численность копий MYCC-, MYCN онкогенов в первичной культуре клеток медуллобластомы человека методом флуоресцентной in situ гибридизации.</p></sec><sec><title>Результаты</title><p>Результаты. Установлено, что воздействие ФРН снижает численность клеток МБ, содержащих 6-, 8-копий онкогена MYCN и 3-, 8 копий MYCC-онкогена. ФРН также увеличивает численность опухолевых клеток, содержащих двойной набор копий обоих онкогенов. Документирована статистически значимая (p&lt;0,0001) отрицательная корреляция (r = –0,65) между средним числом копий MYCCонкогена в клетках МБ и индексом цитотоксичности ФРН.</p></sec><sec><title>Вывод</title><p>Вывод: Увеличение численности копий онкогена снижает чувствительность клеток МБ к ростовому фактору.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction: The search for new molecular targets for chemotherapy of malignancies, particularly pediatric brain tumors, is a relevant issue of modern oncology. MYC expression and amplification is often observed in brain tumors, which is an unfavorable prognostic factor. Many oncogenic processes are regulated by some growth factors including the nerve growth factor (NGF).</p></sec><sec><title>Purpose</title><p>Purpose: To study the changes in the number of MYCCand MYCN‑gene copies in MB cells exposed to the NGF.</p></sec><sec><title>Material and methods</title><p>Material and methods: The impact of the NGF on the number of MYCC‑, MYCN oncogene copies in the primary human medulloblastoma cell culture was assessed using the method of fluorescence in situ hybridization.</p></sec><sec><title>Results</title><p>Results: Exposure to the NGF was shown to decrease the number of MB cells containing 6, 8 copies of MYCN oncogenes and 3, 8 copies of MYCC oncogene. The NGF was also shown to increase the number of tumor cells that contain a double set of copies of both oncogenes. There was a statistically significant (p&lt;0.0001) negative correlation (r=–0.65) between the average number of MYCC oncogene copies and the NGF cytotoxicity index.</p></sec><sec><title>Conclusion</title><p>Conclusion: The increased number of oncogene copies reduces the susceptibility of MB cells to the growth factor.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>медуллобластома</kwd><kwd>фактор роста нервов</kwd><kwd>численность копий</kwd><kwd>MYCC</kwd><kwd>MYCN-онкогены</kwd><kwd>индекс цитотоксичности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>medulloblastoma</kwd><kwd>nerve growth factor</kwd><kwd>number of copies</kwd><kwd>MYCC</kwd><kwd>MYCN oncogenes</kwd><kwd>cytotoxicity index</kwd><kwd>correlation</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">Crawford J. R., MacDonald T. J., Packer R. J. Medulloblastoma in childhood: new biological advances. 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