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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">vestnik-bio-msu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Московского университета. Серия 16. Биология</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik Moskovskogo universiteta. Seriya 16. Biologiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0137-0952</issn><publisher><publisher-name>Lomonosov Moscow State University,  School of Biology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55959/MSU0137-0952-16-78-3-7</article-id><article-id custom-type="elpub" pub-id-type="custom">vestnik-bio-msu-1261</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>ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH ARTICLE</subject></subj-group></article-categories><title-group><article-title>Чувствительность мультипотентных мезенхимальных стромальных клеток к короткому гипоксическому стрессу in vitro зависит от эффективности гомотипической коммуникации через щелевые контакты</article-title><trans-title-group xml:lang="en"><trans-title>The sensitivity of multipotent mesenchymal stromal cells to short-term hypoxic stress in vitro depends on the efficiency of homotypic communication through gap junctions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9995-416X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ездакова</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ezdakova</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ездакова Мария Игоревна – канд. биол. наук, науч. сотр. Тел.: 8-499-195-65-44</p><p>Москва</p></bio><bio xml:lang="en"><p>76A Khoroshevskoye shosse, Moscow, 123007</p></bio><email xlink:type="simple">ezdakova.mi@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1386-2836</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Матвеева</surname><given-names>Д. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Matveeva</surname><given-names>D. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Матвеева Диана Константиновна – аспирантка, мл. науч. сотр.Тел.: 8-499-195-65-44</p><p>Москва</p></bio><bio xml:lang="en"><p>76A Khoroshevskoye shosse, Moscow, 123007</p></bio><email xlink:type="simple">matveeva.dajana@yandex.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/0000-0002-4986-0920</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андрианова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Andrianova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрианова Ирина Вячеславовна – канд. мед. наук, вед. науч. сотр. ИМБП РАН. Тел.: 8-499-195-65-44</p><p>Москва</p></bio><bio xml:lang="en"><p>76A Khoroshevskoye shosse, Moscow, 123007</p></bio><email xlink:type="simple">irandrianova@yandex.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/0000-0002-1000-5804</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андреева</surname><given-names>Е. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Andreeva</surname><given-names>E. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андреева Елена Ромуальдовна – докт. биол. наук., вед. науч. сотр. Тел.: 8-499-195-65-44</p><p>Москва</p></bio><bio xml:lang="en"><p>76A Khoroshevskoye shosse, Moscow, 123007</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственный научный центр Российской Федерации – Институт медико-биологических проблем, Российская академия наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Biomedical Problems, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>11</month><year>2023</year></pub-date><volume>78</volume><issue>3</issue><fpage>195</fpage><lpage>204</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ездакова М.И., Матвеева Д.К., Андрианова И.В., Андреева Е.Р., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Ездакова М.И., Матвеева Д.К., Андрианова И.В., Андреева Е.Р.</copyright-holder><copyright-holder xml:lang="en">Ezdakova M.I., Matveeva D.K., Andrianova I.V., Andreeva E.R.</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://vestnik-bio-msu.elpub.ru/jour/article/view/1261">https://vestnik-bio-msu.elpub.ru/jour/article/view/1261</self-uri><abstract><p>Щелевые контакты (ЩК) обеспечивают метаболическую кооперацию между клетками за счет непосредственного обмена цитоплазматическими компонентами. Проведен анализ влияния короткого гипоксического стресса на эффективность коммуникации через ЩК в культивируемых митотически неактивных мультипотентных мезенхимальных стромальных клетках (МСК) и охарактеризована зависимость чувствительности МСК к короткому гипоксическому стрессу от работы ЩК. МСК постоянно культивировали при 20% О2. ЩК блокировали с помощью специфического ингибитора – карбеноксолона. Затем МСК с работающими или блокированными ЩК подвергали гипоксическому стрессу (менее 0,1% О2, 24 ч). В условиях гипоксического стресса обнаружено снижение эффективности коммуникации через ЩК. Сочетанное действие ингибитора ЩК и гипоксического стресса сопровождалось увеличением уровня активных форм кислорода по сравнению с МСК при гипоксическом стрессе. МСК с заблокированными ЩК были менее чувствительны к короткому гипоксическому стрессу, чем МСК, интегрированные в общую сеть через работающие ЩК. Это проявилось в ослаблении гипоксия-индуцированной ангиогенной активности МСК. Ангиогенные эффекты кондиционированной среды от МСК с блокированными ЩК после гипоксического стресса были почти в два раза меньше по сравнению с МСК при гипоксическом стрессе, что связано, по-видимому, с отличиями в профиле ангиогенных медиаторов: содержание фактора роста сосудистого эндотелия уменьшилось, а фактора роста фибробластов – увеличилось при неизменном уровне моноцитарного хемоаттрактантного белка 3. Таким образом, снижение эффективности прямой коммуникации МСК–МСК оказало негативное влияние на способность индуцировать ангиогенез. Сделано заключение, что блокирование коммуникации через ЩК является негативным механизмом, нарушающим координацию ответа МСК на действие факторов микроокружения – в частности гипоксический стресс – и снижающим их функциональную пластичность.</p></abstract><trans-abstract xml:lang="en"><p>Gap junctions (GJ) provide metabolic cooperation between cells through the direct exchange of cytoplasmic components. We analyzed the effect of short-term hypoxic stress on the efficiency of communication through the GJs in cultured multipotent mesenchymal stromal cells (MSCs) and characterized the sensitivity of MSCs to short-term hypoxic stress depending on the GJ function. Mitotically inactive MSCs were used in the experiments, in which the GJs were blocked with a specific inhibitor – carbenoxolone. The MSCs were continuously cultured at 20% O2. Further, MSCs with blocked and working GJs were subjected to hypoxic stress (0.1%, 24 hours). The efficiency of GJ communication was attenuated under hypoxic stress. The combined action of GJ inhibition and hypoxic stress was accompanied by an increase in ROS level as compared to the MSCs after hypoxic stress only. MSCs with blocked GJs were less sensitive to short-term hypoxic stress in comparison with MSCs integrated into the common network through working GJs. It was manifested in attenuation of hypoxia-induced angiogenic activity of MSCs. The angiogenic effects of conditioned medium from the MSCs with blocked GJs were almost twice less, which seems to be related to differences in the angiogenic mediators’ profiles: VEGF level decreased and FGF-2 level increased, while the monocyte chemoattractant protein 3 (MCP-3) level was unchanged. Thus, a decrease in the efficiency of direct MSCs- MSCs communication had a negative effect on mostly requested MSCs activity – the ability to induce angiogenesis. We conclude that blocking of GJ communication in MSCs is a negative event that impairs the coordination of MSCs’ response to the microenvironmental factors, in particular hypoxic stress, and reduces their functional plasticity.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>мультипотентные мезенхимальные стромальные клетки</kwd><kwd>гомотипические щелевые контакты</kwd><kwd>ингибитор</kwd><kwd>короткий гипоксический стресс</kwd><kwd>внутриклеточные компартменты</kwd><kwd>миграция</kwd><kwd>растворимые медиаторы</kwd><kwd>ангиогенез in ovo</kwd></kwd-group><kwd-group xml:lang="en"><kwd>multipotent mesenchymal stromal cells</kwd><kwd>homotypic gap junctions</kwd><kwd>inhibitor</kwd><kwd>short-term hypoxic stress</kwd><kwd>intracellular compartments</kwd><kwd>migration</kwd><kwd>soluble mediators</kwd><kwd>angiogenesis in ovo</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского фонда фундаментальных исследований (проект № 20-015-00075)</funding-statement><funding-statement xml:lang="en">The research was funded by Russian Foundation for Basic Research, project number 20-015-00075.</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">Андреева Е.Р., Буравкова Л.Б. 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