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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">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-IOA-3132</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-3132</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>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT COMMUNICATIONS</subject></subj-group></article-categories><title-group><article-title>Замедление роста агрессивной клеточной линии глиобластомы в результате подавления энхансерной рнк зависит от способа нокдауна</article-title><trans-title-group xml:lang="en"><trans-title>Inhibition of aggressive glioblastoma cell line growth by enhancer rna silencing depends on the knockdown method</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>Стасевич</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Statsevich</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник Центра высокоточного редактирования и генетических технологий для биомедицины </p></bio><bio xml:lang="en"><p>Junior Researcher, Center for Precision Genome Editing and Genetic Technologies for Biomedicine</p></bio><email xlink:type="simple">kankan1010@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Симонова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Simonova</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>старший лаборант лаборатории передачи внутриклеточных сигналов в норме и патологии </p></bio><bio xml:lang="en"><p>Senior Laboratory Assistant, Laboratory for the Transmission of Intracellular Signals in Normal and Pathological Conditions</p></bio><email xlink:type="simple">simonova_a_v@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Потеряхина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Poteryakhina</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.б.н., старший научный сотрудник </p></bio><bio xml:lang="en"><p>PhD (Biology), Senior Researcher</p></bio><email xlink:type="simple">Lipatovaanv@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бери</surname><given-names>У. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Beri</surname><given-names>U. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>студент лаборатории передачи внутриклеточных сигналов в норме и патологии </p></bio><bio xml:lang="en"><p>Student, Laboratory for the Transmission of Intracellular Signals in Normal and Pathological Conditions</p></bio><email xlink:type="simple">uliana.beri@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богомолова</surname><given-names>Э. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogomolova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>старший лаборант лаборатории передачи внутриклеточных сигналов в норме и патологии </p></bio><bio xml:lang="en"><p>Senior Laboratory Assistant, Laboratory for the Transmission of Intracellular Signals in Normal and Pathological Conditions</p></bio><email xlink:type="simple">elvina.elochka@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Уварова</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Uvarova</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.б.н., младший научный сотрудник Центра высокоточного редактирования и генетических технологий для биомедицины </p></bio><bio xml:lang="en"><p>PhD (Biology), Junior Researcher, Center for Precision Genome Editing and Genetic Technologies for Biomedicine</p></bio><email xlink:type="simple">uvarowww@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мурашко</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Murashko</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник лаборатории передачи внутриклеточных сигналов в норме и патологии </p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory for the Transmission of Intracellular Signals in Normal and Pathological Conditions</p></bio><email xlink:type="simple">murashko@eimb.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жеремян</surname><given-names>Э. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zheremyan</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник Центра высокоточного редактирования и генетических технологий для биомедицины </p></bio><bio xml:lang="en"><p>Junior Research er, Center for Precision Genome Editing and Genetic Technologies for Biomedicine</p></bio><email xlink:type="simple">elyazheremyan@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корнеев</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korneev</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.б.н., старший научный сотрудник Центра высокоточного редактирования и генетических технологий для биомедицины </p></bio><bio xml:lang="en"><p>PhD (Biology), Senior Researcher, Center for Precision Genome Editing and Genetic Technologies for Biomedicine</p></bio><email xlink:type="simple">kirkorneev@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Купраш</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuprash</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.б.н., главный научный сотрудник, руководитель Центра высокоточного редактирования и генетических технологий для биомедицины </p></bio><bio xml:lang="en"><p>PhD, MD (Biology), Chief Researcher, Head, Center for Precision Genome Editing and Genetic Technologies for Biomedicine</p></bio><email xlink:type="simple">kuprash@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Демин</surname><given-names>Д. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Demin</surname><given-names>D. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.б.н., младший научный сотрудник Центра высокоточного редактирования и генетических технологий для биомедицины </p></bio><bio xml:lang="en"><p>PhD (Biology), Junior Researcher, Center for Precision Genome Editing and Genetic Technologies for Biomedicine</p></bio><email xlink:type="simple">Denisdeminbio@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУН «Институт молекулярной биологии имени В.А. Энгельгардта» Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Engelhardt Institute of Molecular Biology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>12</month><year>2025</year></pub-date><volume>27</volume><issue>6</issue><fpage>1399</fpage><lpage>1406</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Стасевич Е.М., Симонова А.В., Потеряхина А.В., Бери У.Р., Богомолова Э.А., Уварова А.Н., Мурашко М.М., Жеремян Э.А., Корнеев К.В., Купраш Д.В., Демин Д.Э., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Стасевич Е.М., Симонова А.В., Потеряхина А.В., Бери У.Р., Богомолова Э.А., Уварова А.Н., Мурашко М.М., Жеремян Э.А., Корнеев К.В., Купраш Д.В., Демин Д.Э.</copyright-holder><copyright-holder xml:lang="en">Statsevich E.M., Simonova A.V., Poteryakhina A.V., Beri U.R., Bogomolova E.A., Uvarova A.N., Murashko M.M., Zheremyan E.A., Korneev K.V., Kuprash D.V., Demin D.E.</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.mimmun.ru/mimmun/article/view/3132">https://www.mimmun.ru/mimmun/article/view/3132</self-uri><abstract><p>Глиобластома является наиболее частой и агрессивной опухолью головного мозга, характеризующейся низкой выживаемостью пациентов. Одной из сложностей в лечении глиобластомы является устойчивость клеток к темозоломиду – основному химиотерапевтическому агенту, применяемому для борьбы с данным заболеванием. Известно, что фактор транскрипции STAT3 играет важную роль в росте и метастазировании опухолевых клеток. Ингибирование STAT3 или подавление экспрессии гена STAT3 снижает устойчивость клеток глиобластомы к темозоломиду. Энхансерные РНК (эРНК) – это некодирующие РНК, которые транскрибируются с энхансерных областей генома. эРНК могут влиять на экспрессию ключевых генов, задействованных в различных биологических процессах, в том числе онкогенов. Ранее нами был произведен поиск эРНК, потенциально влияющих на устойчивость клеток глиобластомы к темозоломиду. Нокдаун энхансерной РНК TMZR1-eRNA (ENSG00000289579) в клеточной линии DBTRG-05MG приводил к снижению экспрессии гена STAT3 и увеличивал чувствительность клеток к темозоломиду. Было показано влияние нокдауна энхансерной РНК на активность промотора гена STAT3 как отдельно, так и в совместной системе с энхансером, с которого происходит транскрипция этой эРНК. В данной работе была исследована активность TMZR1-eRNA в клеточной линии глиобластомы U-251. По сравнению с ранее изученной клеточной линией DBTRG-05MG, линия U-251 является более агрессивной, имеет большую скорость пролиферации и была получена из ткани пациента на более поздней стадии заболевания. Нокдаун TMZR1-eRNA с помощью малых интерферирующих РНК привел к снижению экспрессии гена STAT3, при этом не было обнаружено влияния подавления эРНК на клеточный рост как при добавлении темозоломида, так и в контрольных условиях культуральной среды с ДМСО. Для изучения влияния конститутивного (длительного) подавления эРНК была создана клеточная культура U-251, экспрессирующая короткие шпилечные РНК (shRNA), нацеленные на TMZR1-eRNA. В полученной клеточной линии наблюдалось значимое повышение экспрессии мРНК гена STAT3 относительно контроля. При этом анализ жизнеспособности продемонстрировал значимое замедление скорости роста клеточной линии, экспрессирующей короткие шпилечные РНК к TMZR1-eRNA, по сравнению с контрольной. Значимый эффект наблюдался как при добавлении темозоломида, так и в культуральной среде с ДМСО.</p></abstract><trans-abstract xml:lang="en"><p>Glioblastoma is the most frequent and aggressive brain tumor, with a low survival rate. One of the challenges in treating glioblastoma is the resistance of cells to temozolomide, the main chemical agent used to treat the disease. The STAT3 gene is known to play a significant role in the growth and metastasis of tumor cells. Inhibition of STAT3, or suppression of its expression reduces the resistance of glioblastoma cells to temozolomide. Enhancer RNAs (eRNAs) are non-coding RNAs that are transcribed from enhancer regions. eRNAs can affect the expression of key genes in various biological processes, including carcinogenesis. Previously, we conducted a search for an eRNAs that may potentially affect glioblastoma cell resistance to temozolomide. Knockdown of TMZR1-eRNA (ENSG00000289579) in DBTRG-05MG cell line resulted in decreased STAT3 gene expression and increased cell sensitivity to temozolomide. The effect of enhancer RNA knockdown on STAT3 gene promoter activity has been shown, both alone and together with the enhancer element from which this eRNA is transcribed. The current study was designed to investigate the potency of TMZR1-eRNA in a glioblastoma U-251 cell line. Compared to the previously studied cell line DBTRG-05MG, the U-251 cell line is more aggressive, has a higher proliferation rate and was derived from patient tissue at a later stage of the disease. Knockdown of TMZR1-eRNA by small interfering RNAs resulted in a decrease in STAT3 gene expression. No effect on cell growth was observed both when temozolomide was added and under control conditions of culture medium with DMSO. To study the effects of constitutive (long-term) eRNAs suppression, were have designed U-251 cell cultures expressing short hairpin RNA (shRNA) targeting TMZR1-eRNA and control vector. A significant increase in STAT3 mRNA expression was observed in the obtained cell lines relative to the control. At the same time, viability analysis demonstrated a significant slowdown in the growth rate of the cell line expressing short hairpin RNAs to TMZR1-eRNA compared to the control. A significant effect was observed both when temozolomide was added, as well as in DMSO-containing culture medium.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>энхансерная РНК</kwd><kwd>эРНК</kwd><kwd>глиобластома</kwd><kwd>РНК-интерференция</kwd><kwd>некодирующая РНК</kwd></kwd-group><kwd-group xml:lang="en"><kwd>enhancer RNA</kwd><kwd>knockdown</kwd><kwd>glioblastoma</kwd><kwd>RNA interference</kwd><kwd>non-coding RNA</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда: грант № 24-24-00130.</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">Bravo-Estupiñan D.M., Aguilar-Guerrero K., Quirós S., Acón M.S., Marín-Müller C., Ibáñez-Hernández M., Mora-Rodríguez R.A. 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