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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-TEO-16647</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-3097</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>Экспрессия TIM-3 на дендритных клетках моноцитарного происхождения</article-title><trans-title-group xml:lang="en"><trans-title>TIM-3 expression on monocyte-derived dendritic 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>Тыринова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyrinova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тыринова Тамара Викторовна – д.б.н., ведущий научный сотрудник.</p><p>630099, Новосибирск, ул. Ядринцевская, 14</p><p>Тел.: 8 (383) 228-21-01</p></bio><bio xml:lang="en"><p>Tamara V. Tyrinova - PhD, MD (Biology), Leading Research Associate, Research Institute of Fundamental and Clinical Immunology.</p><p>14 Yadrintsevskaya St Novosibirsk 630099</p><p>Phone: +7 (383) 228-21-01</p></bio><email xlink:type="simple">tyrinova@bk.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>Леплина</surname><given-names>О. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Leplina</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.м.н., ведущий научный сотрудник.</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Leading Research Associate, Research Institute of Fundamental and Clinical Immunology.</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черных</surname><given-names>Е. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernykh</surname><given-names>E. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.м.н., профессор, член-корр. РАН, заведующая лабораторией.</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Corresponding Member, Russian Academy of Sciences, Head of Laboratory, Research Institute of Fundamental and Clinical Immunology.</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Научно-исследовательский институт фундаментальной и клинической иммунологии»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Fundamental and Clinical Immunology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>21</day><month>09</month><year>2024</year></pub-date><volume>26</volume><issue>5</issue><fpage>1115</fpage><lpage>1120</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тыринова Т.В., Леплина О.Ю., Черных Е.Р., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тыринова Т.В., Леплина О.Ю., Черных Е.Р.</copyright-holder><copyright-holder xml:lang="en">Tyrinova T.V., Leplina O.Y., Chernykh 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://www.mimmun.ru/mimmun/article/view/3097">https://www.mimmun.ru/mimmun/article/view/3097</self-uri><abstract><p>Ингибиторный чекпойнт-рецептор TIM-3 (T cell immunoglobulin domain and mucin domain-containing molecule-3), являющийся одним из важнейших рецепторов, регулирующих реакции клеточного иммунитета, был идентифицирован как рецептор негативной регуляции Т-клеток. Исследования последнего времени продемонстрировали, что TIM-3 экспрессируется на клетках врожденного иммунитета, в том числе и на дендритных клетках (ДК), причем даже на более высоком уровне по сравнению с Т-клетками. Значительная часть ДК в зоне опухолевого микроокружения имеет моноцитарное происхождение. У человека моделями для изучения таких ДК in vitro являются культуры ДК, генерированные из моноцитов в присутствии ростовых факторов. Настоящее исследование было направлено на изучение экспрессии TIM-3 в IFNα-индуцированных ДК моноцитарного происхождения (ИФН-ДК), а также влияния активации ДК на экспрессию TIM-3. ДК генерировали путем культивирования прилипающей фракции мононуклеарных клеток здоровых доноров в течение 4 суток в присутствии GM-CSF и IFNα с последующим дозреванием в течение 24 ч с ЛПС. В качестве активационного стимула в культуры интактных ИФН-ДК на этапе созревания совместно с ЛПС добавляли препарат на основе двуцепочечной ДНК человека (dsDNA, 5 мкг/мл). Уровень экспрессии мембранной формы TIM-3 определяли методом проточной цитофлюориметрии, уровень экспрессии мРНК TIM-3 – методом RT-PCR в режиме реального времени с обратной транскрипцией.</p><p>Получены данные о том, что интактные ИФН-ДК доноров на высоком уровне экспрессировали мембранную форму TIM-3 (более 70% клеток). Добавление ЛПС в качестве дозревающего стимула снижало почти в два раза экспрессию TIM-3 (pW &lt; 0,05), не влияя при этом на экспрессию мРНК HAVCR2/TIM-3. Экзогенная dsDNA (совместно с ЛПС) увеличивала более чем в три раза экспрессию мРНК HAVCR2/TIM-3 (рW = 0,05) на фоне снижения количества TIM-3+ДК (рW = 0,003), что свидетельствует о наличии механизмов, поддерживающих экспрессию данного ингибиторного чекпойнт-рецептора в условиях активации ДК.</p><p>Дальнейшие исследования регуляции экспрессии TIM-3 дендритными клетками моноцитарного происхождения позволят расширить представления о биологической значимости ингибиторных рецепторов на ДК с точки зрения иммунного ответа, а также в перспективе повысить эффективность уже существующих подходов в лечении опухоли с помощью ИФН-ДК и ингибиторов чекпойнт-молекул.</p></abstract><trans-abstract xml:lang="en"><p>The T cell immunoglobulin domain and mucin domain-containing molecule-3 (TIM-3), an inhibitory checkpoint receptor, has been identified as a crucial regulator of cellular immune responses. TIM-3 has been discovered as a receptor involved in the negative regulation of T cells. Recent studies have demonstrated that TIM-3 is expressed on innate immune cells, including dendritic cells (DCs), even at a higher level than T cells. In the tumor microenvironment, the majority of DCs have a monocytic origin. Models for studying such DCs in vitro are DC cultures generated from monocytes in the presence of growth factors. The present study aimed to investigate the expression of TIM-3 in IFNα-induced monocyte-derived DCs (IFN-DCs) and the impact of DC activation on TIM-3 expression. DCs were obtained by culturing the adherent fraction of mononuclear cells from healthy donors for 4 days in the presence of GM-CSF and IFNα, followed by LPS addition for 24 hours. Human double-stranded DNA (dsDNA, 5 μg/mL) was added as an activation stimulus to intact IFN-DCs at the stage of maturation, along with LPS. Expression of the membrane TIM-3 molecule was determined by flow cytometry, and the level of expression of TIM-3 mRNA – by real-time RT-PCR with reverse transcription. Intact donor IFN-DCs expressed the membrane TIM-3 molecule at a high level (more than 70% of cells). The addition of LPS as a maturation stimulus almost halved the expression of TIM-3 (pW &lt; 0.05) without affecting the expression of HAVCR2/TIM-3 mRNA. Exogenous dsDNA (along with LPS) increased the expression of HAVCR2/TIM-3 mRNA by more than three times (pW = 0.05) with a decrease in the number of TIM-3+DCs (pW = 0.003). Our findings indicate the presence of mechanisms that support expression of this inhibitory checkpoint receptor under conditions of DC activation. Further studies of the regulation of TIM-3 expression by monocyte-derived dendritic cells will expand the understanding of the biological significance of inhibitory receptors on DCs from the point of view of the immune response, as well as, in the future, increase the effectiveness of current approaches in cancer immunotherapy using IFN-DCs and inhibitors of checkpoint molecules.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дендритные клетки</kwd><kwd>чекпойнт-молекулы</kwd><kwd>TIM-3</kwd><kwd>IFNα</kwd><kwd>липополисахарид</kwd><kwd>двуцепочечная ДНК</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dendritic cells</kwd><kwd>checkpoint molecules</kwd><kwd>TIM-3</kwd><kwd>IFNα</kwd><kwd>lipopolysaccharide</kwd><kwd>double-stranded DNA</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке РНФ (грант № 23-25-00354, https://rscf.ru/project/23-25-00354/.</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">Alyamkina E.A., Dolgova E.V., Likhacheva A.S., Rogachev V.A., Sebeleva T.E., Nikolin V.P., Popova N.A., Kiseleva E.V., Orishchenko K.E., Sakhno L.V., Gel'fgat E.L., Ostanin A.A., Chernykh E.R., Zagrebelniy S.N., Bogachev S.S., Shurdov M.A. Exogenous allogenic fragmented double-stranded DNA is internalized into human dendritic cells and enhances their allostimulatory activity. 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