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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">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">27415</article-id><article-id pub-id-type="doi">10.32607/actanaturae.27415</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">Specific Activation of the Expression of Growth Factor Genes in Expi293F Human Cells Using CRISPR/Cas9-SAM Technology Increases Their Proliferation</article-title><trans-title-group xml:lang="ru"><trans-title>Специфичная активация экспрессии генов факторов роста в линии клеток человека Expi293F с помощью технологии CRISPR/Cas9-SAM приводит к повышению их пролиферации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bobrovsky</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Бобровский</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>pbobrovskiy@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Grafskaia</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Графская</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>pbobrovskiy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kharlampieva</surname><given-names>D. D.</given-names></name><name xml:lang="ru"><surname>Харлампиева</surname><given-names>Д. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>pbobrovskiy@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Manuvera</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Манувера</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>pbobrovskiy@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lazarev</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Лазарев</surname><given-names>В. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>pbobrovskiy@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency</institution></aff><aff><institution xml:lang="ru">Федеральный научно-клинический центр физико-химической медицины имени академика Ю.М. Лопухина Федерального медико-биологического агентства</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Moscow Institute of Physics and Technology</institution></aff><aff><institution xml:lang="ru">Московский физико-технический институт (национальный исследовательский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-11-12" publication-format="electronic"><day>12</day><month>11</month><year>2024</year></pub-date><volume>16</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>25</fpage><lpage>37</lpage><history><date date-type="received" iso-8601-date="2024-04-18"><day>18</day><month>04</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-08-02"><day>02</day><month>08</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Bobrovsky P.A., Grafskaia E.N., Kharlampieva D.D., Manuvera V.A., Lazarev V.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Бобровский П.А., Графская Е.Н., Харлампиева Д.Д., Манувера В.А., Лазарев В.Н.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Bobrovsky P.A., Grafskaia E.N., Kharlampieva D.D., Manuvera V.A., Lazarev V.N.</copyright-holder><copyright-holder xml:lang="ru">Бобровский П.А., Графская Е.Н., Харлампиева Д.Д., Манувера В.А., Лазарев В.Н.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><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://actanaturae.ru/2075-8251/article/view/27415">https://actanaturae.ru/2075-8251/article/view/27415</self-uri><abstract xml:lang="en"><p>Human cell lines play an important role in biotechnology and pharmacology. For them to grow, they need complex nutrient media containing signaling proteins — growth factors. We have tested a new approach that reduces the need of cultured human cell lines for exogenous growth factors. This approach is based on the generation of a modified cell with a selectively activated gene expression of one of the endogenous growth factors: IGF-1, FGF-2, or EIF3I. We modified the Expi293F cell line, a HEK293 cell line variant widely used in the production of recombinant proteins. Gene expression of the selected growth factors in these cells was activated using the CRISPR/Cas9 technology with the synergistic activation mediators CRISPR/Cas9-SAM, which increased the expression of the selected genes at both the mRNA and protein levels. Upon culturing under standard conditions, the modified lines exhibited increased proliferation. A synergistic effect was observed in co-culture of the three modified lines. In our opinion, these results indicate that this approach is promising for efficient modification of cell lines used in biotechnology.</p></abstract><trans-abstract xml:lang="ru"><p>Культивируемые линии клеток человека, широко применяемые в биотехнологии и фармакологии, нуждаются в питательных средах сложного состава, содержащих сигнальные белки – факторы роста. Мы опробовали новый подход, позволяющий снизить зависимость роста культивируемых линий клеток человека от экзогенных ростовых факторов. Этот подход основан на получении модифицированной линии клеток, в которой избирательно активирована экспрессия одного из собственных генов ростовых факторов – IGF-1, FGF-2, EIF3I. Модифицировали линию клеток Expi293F, вариант линии клеток HEK293 (клетки эмбриональной почки человека), широко используемый для получения рекомбинантных белков. Экспрессию генов выбранных ростовых факторов в этих клетках активировали с помощью технологии CRISPR/Cas9 с синергичными медиаторами активации – CRISPR/Cas9-SAM, что привело к увеличению экспрессии выбранных генов и продукции целевых белков. Модифицированные линии клеток, культивируемые в стандартных условиях, характеризуются повышенной пролиферацией. При совместном культивировании трех модифицированных линий наблюдается синергичный эффект. На наш взгляд, полученные результаты говорят о перспективности выбранного нами подхода получения модифицированных клеточных линий для использования в биотехнологии.</p></trans-abstract><kwd-group xml:lang="en"><kwd>CRISPR/Cas9-SAM</kwd><kwd>HEK293</kwd><kwd>proliferation</kwd><kwd>IGF-1</kwd><kwd>FGF-2</kwd><kwd>EIF3I</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>CRISPR/Cas9-SAM</kwd><kwd>HEK293</kwd><kwd>пролиферация</kwd><kwd>IGF-1</kwd><kwd>FGF-2</kwd><kwd>EIF3I</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд (гранд)</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation (grand)</institution></institution-wrap></funding-source><award-id>23-24-00012</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Minonzio G., Linetsky E. // CellR4. 2014. V. 2. № 6. 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