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<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.2 20190208//EN" "https://jats.nlm.nih.gov/publishing/1.2/JATS-journalpublishing1.dtd">
<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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Advances in Molecular Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Advances in Molecular Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Успехи молекулярной онкологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-805X</issn><issn publication-format="electronic">2413-3787</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">869</article-id><article-id pub-id-type="doi">10.17650/2313-805X-2026-13-3-27-35</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>RESEARCH ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ЭКСПЕРИМЕНТАЛЬНЫЕ СТАТЬИ</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">Effect of <italic>EPHB6</italic> knockdown on migration, invasion, and tumorigenicity of oral cancer cells <italic>in vitro</italic></article-title><trans-title-group xml:lang="ru"><trans-title>Влияние нокдауна гена <italic>EPHB6</italic> на миграцию, инвазию и туморогенность клеток рака полости рта <italic>in vitro</italic></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5040-931X</contrib-id><name-alternatives><name xml:lang="en"><surname>Tretyakova</surname><given-names>Maria S.</given-names></name><name xml:lang="ru"><surname>Третьякова</surname><given-names>Мария Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9122-3274</contrib-id><name-alternatives><name xml:lang="en"><surname>Kolegova</surname><given-names>E. S.</given-names></name><name xml:lang="ru"><surname>Колегова</surname><given-names>Е. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1405-3723</contrib-id><name-alternatives><name xml:lang="en"><surname>Prostakishina</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Простакишина</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7540-8532</contrib-id><name-alternatives><name xml:lang="en"><surname>Fedorova</surname><given-names>I. K.</given-names></name><name xml:lang="ru"><surname>Федорова</surname><given-names>И. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5705-8479</contrib-id><name-alternatives><name xml:lang="en"><surname>Vorobev</surname><given-names>R. S.</given-names></name><name xml:lang="ru"><surname>Воробьев</surname><given-names>Р. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3089-5047</contrib-id><name-alternatives><name xml:lang="en"><surname>Kulbakin</surname><given-names>D. E.</given-names></name><name xml:lang="ru"><surname>Кульбакин</surname><given-names>Д. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3651-0665</contrib-id><name-alternatives><name xml:lang="en"><surname>Choinzonov</surname><given-names>E. L.</given-names></name><name xml:lang="ru"><surname>Чойнзонов</surname><given-names>Е. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2923-9755</contrib-id><name-alternatives><name xml:lang="en"><surname>Denisov</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Денисов</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cancer Research Institute</p></bio><bio xml:lang="ru"><p>Научно-исследовательский институт онкологии </p></bio><email>trremar@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tomsk National Research Medical Center of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Томский национальный исследовательский медицинский центр Российской академии наук»</institution></aff></aff-alternatives><content-language>ru</content-language><pub-date date-type="pub" publication-format="electronic" iso-8601-date="2026-09-22"><day>22</day><month>09</month><year>2026</year></pub-date><pub-date date-type="collection"><year>2026</year></pub-date><volume>13</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>27</fpage><lpage>35</lpage><history><date date-type="received" iso-8601-date="2026-05-28"><day>28</day><month>05</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-09-22"><day>22</day><month>09</month><year>2026</year></date></history><pub-history><event event-type="received"><event-desc>Received:<date date-type="received" iso-8601-date="2026-05-28"><day>28</day><month>05</month><year>2026</year></date></event-desc></event><event event-type="accepted"><event-desc>Accepted:<date date-type="accepted" iso-8601-date="2026-09-22"><day>22</day><month>09</month><year>2026</year></date></event-desc></event><event event-type="pub"><event-desc>Published:<pub-date date-type="pub" publication-format="electronic" iso-8601-date="2026-09-22"><day>22</day><month>09</month><year>2026</year></pub-date></event-desc></event></pub-history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, ABV-Press</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, АБВ-пресс</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">ABV-Press</copyright-holder><copyright-holder xml:lang="ru">АБВ-пресс</copyright-holder><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://umo.abvpress.ru/jour/article/view/869">https://umo.abvpress.ru/jour/article/view/869</self-uri><abstract xml:lang="en"><p><bold>Introduction.</bold> In recent years, a rising incidence of oral cancer (OC) has been observed among young adults without traditional risk factors (smoking, alcohol consumption, and human papillomavirus infection). An aggressive clinical course and a high recurrence rate are observed in patients of this age group. Therefore, there is a growing need to identify novel molecular alterations that could elucidate the mechanisms driving the disease progression. Previously, we identified mutations in the <italic>EPHB6</italic> gene associated with early-onset OC recurrence.</p> <p><bold>Aim.</bold> To evaluate the effect of <italic>EPHB6</italic> knockdown on the functional characteristics of OC cells <italic>in vitro.</italic></p> <p><bold>Materials and methods.</bold> The OC cell line Cal-27 was used in this study. Gene knockdown was induced using small interfering RNAs.</p> <p><bold>Results.</bold> <italic>EPHB6</italic> knockdown resulted in a 90 % reduction in gene expression relative to the control, which was accompanied by alterations in cellular functional properties, including inhibition of migration and invasion, as well as reduced tumorigenic capacity in three-dimensional cultures.</p> <p><bold>Conclusion. </bold>These findings shed light on the potential mechanisms by which <italic>EPHB6</italic> contributes to early-onset OC progression.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> В последние годы отмечается рост заболеваемости раком полости рта (РПР) среди молодых пациентов без традиционных факторов риска (курение, употребление алкоголя, инфицирование вирусом папилломы человека), для которого характерны более агрессивное течение и повышенная частота развития рецидивов. В связи с этим актуальным становится поиск новых молекулярных особенностей, которые могли бы прояснить механизмы агрессивного течения заболевания у больных данной возрастной группы. Ранее нами обнаружены мутации в гене <italic>EPHB</italic><italic>6</italic>, ассоциированные с развитием рецидивов РПР у пациентов молодого возраста.</p> <p><bold>Цель исследования</bold> – оценить влияние нокдауна гена <italic>EPHB</italic><italic>6</italic> на функциональные характеристики клеток РПР <italic>in</italic><italic> </italic><italic>vitro</italic>.</p> <p><bold>Материалы и методы. </bold>В работе использовали клеточную линию РПР Cal-27. Нокдаун гена индуцировали с помощью малых интерферирующих РНК.</p> <p><bold>Результаты.</bold> Нокдаун <italic>EPHB</italic><italic>6</italic> обеспечивал снижение экспрессии гена на 90 % относительно контроля, что сопровождалось изменением функциональных свойств клеток: ингибированием миграции и инвазии, а также снижением туморогенной способности в трехмерных культурах.</p> <p><bold>Заключение.</bold> Полученные результаты проливают свет на возможные механизмы участия <italic>EPHB</italic><italic>6</italic> в прогрессировании РПР у пациентов молодого возраста.</p></trans-abstract><kwd-group xml:lang="en"><kwd>oral cancer</kwd><kwd>young adults</kwd><kwd>tumor progression</kwd><kwd>recurrence</kwd><kwd>in vitro model</kwd><kwd>small interfering RNA</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак полости рта</kwd><kwd>молодой возраст</kwd><kwd>прогрессия опухоли</kwd><kwd>рецидив</kwd><kwd>модель in vitro</kwd><kwd>малые интерферирующие РНК</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>075-01184-22-00</award-id></award-group><funding-statement xml:lang="en">The study was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation No. FGWM-2022-0015 (state registration number 122020200182-8) and using the equipment of the Core facility “Medical genomics” of the Tomsk National Research Medical Center of the Russian Academy of Sciences.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено в рамках государственного задания Министерства науки и высшего образования Российской Федерации № FGWM-2022-0015 (регистрационный номер темы 122020200182-8) и с использованием оборудования Центра коллективного пользования «Медицинская геномика» онкологии ФГБНУ «Томский национальный исследовательский медицинский центр Российской академии наук».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lenoci D., Moresco E., Cavalieri S. et al. 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