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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-PON-2223</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2223</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>МАТЕРИАЛЫ ФОРУМА "ДНИ ИММУНОЛОГИИ В СПБ" 2021</subject></subj-group></article-categories><title-group><article-title>СООТНОШЕНИЕ НАИВНЫХ CD45RA+ И CD31+Т-КЛЕТОК У ПАЦИЕНТОВ С РЕВМАТОИДНЫМ АРТРИТОМ ПРИ СТИМУЛЯЦИИ ГОМЕОСТАТИЧЕСКИМИ ФАКТОРАМИ IN VITRO</article-title><trans-title-group xml:lang="en"><trans-title>PROPORTION OF NAIVE CD45RA+ AND CD31+T-CELLS IN PATIENTS WITH RHEUMATOID ARTHRITIS UNDER STIMULATION WITH HOMEOSTATIC FACTORS IN VITRO</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3327-3630</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Блинова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Blinova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.б.н., старший научный сотрудник лаборатории клинической иммунопатологии,</p><p>630099, г. Новосибирск, ул. Ядринцевская, 14</p></bio><bio xml:lang="en"><p>PhD (Biology), Senior Research Associate, Laboratory of Clinical Immunopathology, </p><p>630099, Novosibirsk, Yadrintsevskaya str., 14</p></bio><email xlink:type="simple">blinovaelena-85@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>Гришина</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Grishina</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.б.н., научный сотрудник лаборатории клинической иммунопатологии,</p><p>630099, г. Новосибирск, ул. Ядринцевская, 14</p></bio><bio xml:lang="en"><p>PhD (Biology), Research Associate, Laboratory of Clinical Immunopathology,</p><p>630099, Novosibirsk, Yadrintsevskaya str., 14</p></bio><email xlink:type="simple">l_grishina@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>Сизиков</surname><given-names>А. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Sizkov</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., врач-ревматолог, заведующий отделением ревматологии клиники иммунопатологии,</p><p>630099, г. Новосибирск, ул. Ядринцевская, 14</p></bio><bio xml:lang="en"><p>PhD (Medicine), Rheumatologist, Head, Department of the Rheumatology, Clinic of the Immunopathology, </p><p>630099, Novosibirsk, Yadrintsevskaya str., 14</p></bio><email xlink:type="simple">depaidici@online.nsk.su</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>Козлов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.м.н., профессор, академик РАН, заведующий лабораторией клинической иммунопатологии,</p><p>630099, г. Новосибирск, ул. Ядринцевская, 14</p></bio><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Full Member, Russian Academy of Sciences, Head, Laboratory of Clinical Immunopathology, </p><p>630099, Novosibirsk, Yadrintsevskaya str., 14</p></bio><email xlink:type="simple">vakoz40@yandex.ru</email><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>2021</year></pub-date><pub-date pub-type="epub"><day>07</day><month>10</month><year>2021</year></pub-date><volume>23</volume><issue>4</issue><fpage>725</fpage><lpage>730</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Блинова Е.А., Гришина Л.В., Сизиков А.Э., Козлов В.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Блинова Е.А., Гришина Л.В., Сизиков А.Э., Козлов В.А.</copyright-holder><copyright-holder xml:lang="en">Blinova E.A., Grishina L.V., Sizkov A.E., Kozlov V.A.</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/2223">https://www.mimmun.ru/mimmun/article/view/2223</self-uri><abstract><p>Большое внимание исследователей направлено на изучение роли факторов гомеостатической пролиферации в патогенезе аутоиммунных заболеваний, однако, до сих пор недостаточно изучено влияние IL-7 и IL-15 на фенотип наивных Т-клеток при патологии. Целью данного исследования стало изучение соотношения CD45RA+ и CD31+ наивных клеток среди CD4+ и CD8+ лимфоцитов здоровых индивидуумов и пациентов с ревматоидным артритом (РА) при стимуляции IL-7, IL-15 in vitro. В периферической крови мы не обнаружили отличий по числу CD45RA+ и CD31+ клеток между группами доноров и пациентов. Стимуляция комбинацией IL-7 с IL-15 способствовала увеличению числа CD4+CD45RA+ и CD8+CD45RA+  у доноров относительно их уровня в периферической крови. Тогда как у пациентов с РА число CD8+CD45RA+ клеток снижалось под действием IL-15, комбинации IL-15 с IL-7 по сравнению с контролем без стимуляции, и достоверно отличалось, как и число CD4+CD45RA+ клеток, от содержания данных клеток у доноров в тех же условиях. Достоверных отличий по содержанию CD31+ клеток и числу CD31+ клеток, отвечающих пролиферацией на цитокины, как между группами доноров и пациентов с РА, так и различными вариантами культивирования не было выявлено.  Таким образом, можно говорить о том, что под влиянием факторов гомеостатической пролиферации происходит пропорциональное увеличение CD31+ Т-клеток, как у доноров, так и пациентов с РА. При этом наивные Т-клетки доноров при культивировании сохраняют экспрессию CD45RA, а наивные Т-клетки пациентов частично ее утрачивают. Полученные данные говорят о том, что под действием факторов гомеостатической пролиферации при РА происходит конверсия фенотипа наивных Т-клеток в фенотип Т-клеток памяти.</p></abstract><trans-abstract xml:lang="en"><p>Much attention of researchers is directed to study the role of factors of homeostatic proliferation in the pathogenesis of autoimmune diseases, however, the effect of IL-7 and IL-15 on the phenotype of naive T cells  has not yet been sufficiently investigated in the pathology. The aim of this study was to investigate the proportion of CD45RA+ and CD31+ naive cells among CD4+ and CD8+ lymphocytes from healthy individuals and patients with rheumatoid arthritis (RA) upon stimulation with IL-7, IL-15 in vitro. In peripheral blood, we did not find any differences in the number of CD45RA+ and CD31+ cells between the group of donors and group of RA patients. In donors, stimulation by a combination of IL-7 with IL-15 promoted an increase in the proportion of CD4+CD45RA+ and CD8+CD45RA+  relative to their level in the peripheral blood. Whereas in RA patients the number of CD8+CD45RA+ cells decreased under IL-15 and the combination of IL-15 with IL-7 compared to the control without stimulation, and it, as a proportion of CD4+CD45RA+ cells, significantly differed from the content of these cells  under the same conditions in donors. There were no significant differences in the content of CD31+ cells and the number of CD31+ cells proliferating to cytokines, both between the groups of donors and patients with RA, and between different culture conditions. Thus, we can say that under the factors of homeostatic proliferation, there is a proportional increase in CD31+ T cells number, both in donors and in patients with RA. At the same time, naive T cells from donors  retain the expression of CD45RA during cultivation, while naive T cells from patients partially lose it. The obtained data  indicate that in RA, under  factors of  homeostatic proliferation  the phenotype of naive T cells is converted into the phenotype of memory T cells.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наивные Т-клетки</kwd><kwd>CD31</kwd><kwd>гомеостатическая пролиферация</kwd><kwd>IL-7</kwd><kwd>IL-15</kwd><kwd>ревматоидный артрит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>naive T-cells</kwd><kwd>CD31</kwd><kwd>homeostatic proliferation</kwd><kwd>IL-7</kwd><kwd>IL-15</kwd><kwd>rheumatoid arthritis</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Azevedo R.I., Soares M.V., Barata J.T., Tendeiro R. 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