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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-IOH-2208</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2415</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>ВЛИЯНИЕ ГОМЕОСТАТИЧЕСКИХ ЦИТОКИНОВ – IL-7 И IL-15 НА T-РЕГУЛЯТОРНЫЕ КЛЕТКИ IN VITRO</article-title><trans-title-group xml:lang="en"><trans-title>INFLUENCE OF HOMEOSTATIC CYTOKINES – IL-7 AND IL-15 ON T-REGULATORY CELLS IN VITRO</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>Шевырев</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shevyrev</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.м.н., младший научный сотрудник лаборатории клинической иммунопатологии,</p><p>630099, г. Новосибирск, ул. Ядринцевская, 14</p></bio><bio xml:lang="en"><p>PhD (Medicine), Junior Research Associate, Laboratory of Clinical Immunopathology, </p><p>630099, Novosibirsk, Yadrintsevskaya str., 14</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>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><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>17</day><month>10</month><year>2021</year></pub-date><volume>23</volume><issue>4</issue><fpage>671</fpage><lpage>676</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шевырев Д.В., Козлов В.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Шевырев Д.В., Козлов В.А.</copyright-holder><copyright-holder xml:lang="en">Shevyrev D.V., 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/2415">https://www.mimmun.ru/mimmun/article/view/2415</self-uri><abstract><p>Цитокины IL-7 и IL-15 являются наиболее важными гуморальными факторами, обеспечивающими восстановление пула Т-лимфоцитов после лимфопении в процессе гомеостатической пролиферации (ГП). Однако неизвестно, могут ли эти цитокины обеспечивать гомеостатическое поддержание и пролиферацию T-регуляторных клеток (Treg). Также, учитывая связь между гомеостатической пролиферацией и развитием аутоиммунных заболеваний, интересно, могут ли цитокины ГП вызывать переход Treg-клеток в Th17-лимфоциты. Поэтому целью данного исследования было изучить влияние гуморальных факторов ГП (IL-7 и IL-15) на Treg-клетки in vitro. В исследовании использовалась периферическая кровь 22 здоровых доноров. Фракцию МНК получали центрифугированием в градиенте плотности фиколла. Для стимуляции пролиферации использовались цитокины ГП – IL-7 и IL-15, а также комбинация IL-2 с анти-CD3-антителами. Интенсивность пролиферации Treg оценивалась с помощью проточной цитометрии с использованием CFSE в общих культурах МНК по фенотипу CD3+CD4+CD25+FoxP3+, а также в чистой популяции Treg-клеток CD3+CD4+CD25+CD127lo, полученной с помощью иммуномагнитной сепарации с использованием набора MACS Treg Isolation Kit. Также во время культивирования оценивалась экспрессия основного транскрипционного фактора Th17-лимфоцитов – RORyt в CD3+CD4+CD25+FoxP3+-лимфоцитах. Было обнаружено, что IL-7 и IL-15 могут поддерживать Treg-клетки численно и по фенотипу, поддерживая экспрессию FoxP3 в Treg-клетках. При этом, в отличие от цитокинов ГП, стимуляция IL-2 + анти-CD3 индуцировала экспрессию FoxP3 de novo в CD4+ лимфоцитах. Также было обнаружено, что IL-7 и IL-15 могут вызывать пролиферацию Treg-клеток, однако она значительно менее интенсивна по сравнению со стимуляцией IL-2 + анти-CD3. При этом цитокины ГП не обладали способностью индуцировать экспрессию RORyt как в Treg клетках, так и в CD4+ лимфоцитах. Таким образом, было показано, что IL-7 и IL-15 потенциально могут участвовать в поддержании общего пула клеток Treg во время лимфопении, когда возникает дефицит IL-2, и не индуцируют экспрессию RORyt. Однако, как эти цитокины влияют на функциональную активность Treg-клеток, остается неясным и требует дальнейших исследований. </p></abstract><trans-abstract xml:lang="en"><p>Cytokines IL-7 and IL-15 are the most important humoral factors providing T-conventional cell pool reconstitution during homeostatic proliferation caused by lymphopenia. However, whether these cytokines can provide homeostatic maintenance and proliferation of T-regulatory (Treg) cells is largely unknown. Considering the association between homeostatic proliferation and the development of autoimmunity, we decided to investigate the ability of these factors to cause differentiation of Treg-cells into Th17-lymphocytes. Therefore, the purpose of this study was to investigate the influence of humoral factors of homeostatic proliferation (IL-7 and IL-15) on Treg-cells in vitro. The study used peripheral blood sampled from 22 healthy donors. PBMC fraction was isolated by Ficoll density gradient centrifugation. Proliferation was induced by IL-7, IL-15, and by a combination of IL-2 with anti-CD3-antibodies. The proliferation intensity of Tregs was evaluated by flow cytometry using CFSE in PBMC cultures by phenotype CD3+CD4+CD25+FoxP3+ and in the previously purified population of CD3+CD4+CD25+CD127lo-cells. In this case Treg-cells were obtained by immunomagnetic separation from PBMCs using a MACS Treg Isolation Kit. Also, the RORyt expression in CD3+CD4+CD25+FoxP3+-cells was evaluated during cultivation. Here, we have shown that IL-7 and IL-15 could support Treg-cells by number and phenotype. Also, we revealed that these factors provide FoxP3 expression in Treg-cells; meanwhile, stimulation with IL-2 + anti-CD3 can also cause induction of FoxP3 expression de novo in conventional CD4+ cells. Also, we have shown that IL-7 and IL-15 can cause lower-intensity proliferation of Treg-cells in comparison with IL-2 + anti-CD3. Herewith homeostatic cytokines didn’t have the ability to induce RORyt expression in both T-regulatory cells and CD4+ conventional T-lymphocytes. Thus, it has been shown that IL-7 and IL-15 can potentially participate in maintaining the total pool of Treg-cells during lymphopenia, when IL-2 deficiency occurs, without causing the induction of RORyt expression. However, how homeostatic cytokines affect the functional activity of Treg-cells remains unclear and requires further investigation. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>T-регуляторные клетки</kwd><kwd>IL-7</kwd><kwd>IL-15</kwd><kwd>гомеостатическая пролиферация</kwd><kwd>RORγt</kwd><kwd>FoxP3</kwd></kwd-group><kwd-group xml:lang="en"><kwd>T-regulatory cells</kwd><kwd>IL-7</kwd><kwd>IL-15</kwd><kwd>homeostatic proliferation</kwd><kwd>RORγt</kwd><kwd>and FoxP3</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the RFBR, Grant № 17-44-540167r_a.</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">Berard M., Brandt K., Bulfone-Paus S., Tough D.F. IL-15 promotes the survival of naive and memory phenotype CD8+ T cells. J. Immunol., 2003, Vol. 170, no. 10, pp. 5018-5026.</mixed-citation><mixed-citation xml:lang="en">Berard M., Brandt K., Bulfone-Paus S., Tough D.F. IL-15 promotes the survival of naive and memory phenotype CD8+ T cells. J. Immunol., 2003, Vol. 170, no. 10, pp. 5018-5026.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Du R., Zhao H., Yan F., Li H. IL-17+Foxp3+ T cells: an intermediate differentiation stage between Th17 cells and regulatory T cells. J. Leukoc. Biol., 2014, Vol. 96, no. 1, pp. 39-48.</mixed-citation><mixed-citation xml:lang="en">Du R., Zhao H., Yan F., Li H. IL-17+Foxp3+ T cells: an intermediate differentiation stage between Th17 cells and regulatory T cells. J. Leukoc. Biol., 2014, Vol. 96, no. 1, pp. 39-48.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Duarte J.H., Zelenay S., Bergman M.L., Martins A.C., Demengeot J. Natural Treg cells spontaneously differentiate into pathogenic helper cells in lymphopenic conditions. Eur. J. Immunol., 2009, Vol. 39, no. 4, pp. 948-955.</mixed-citation><mixed-citation xml:lang="en">Duarte J.H., Zelenay S., Bergman M.L., Martins A.C., Demengeot J. Natural Treg cells spontaneously differentiate into pathogenic helper cells in lymphopenic conditions. Eur. J. Immunol., 2009, Vol. 39, no. 4, pp. 948-955.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Komatsu N., Okamoto K., Sawa S., Nakashima T., Oh-hora M., Kodama T., Tanaka S., Bluestone J.A., Takayanagi H. Pathogenic conversion of Foxp3+ T cells into TH17 cells in autoimmune arthritis. Nat. Med., 2014, Vol. 20, no. 1, pp. 62-68.</mixed-citation><mixed-citation xml:lang="en">Komatsu N., Okamoto K., Sawa S., Nakashima T., Oh-hora M., Kodama T., Tanaka S., Bluestone J.A., Takayanagi H. Pathogenic conversion of Foxp3+ T cells into TH17 cells in autoimmune arthritis. Nat. Med., 2014, Vol. 20, no. 1, pp. 62-68.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Kondrack R.M., Harbertson J., Tan J.T., McBreen M.E., Surh C.D., Bradley L.M. Interleukin 7 regulates the survival and generation of memory CD4 cells. J. Exp. Med., 2003, Vol. 198, no. 12, pp. 1797-1806.</mixed-citation><mixed-citation xml:lang="en">Kondrack R.M., Harbertson J., Tan J.T., McBreen M.E., Surh C.D., Bradley L.M. Interleukin 7 regulates the survival and generation of memory CD4 cells. J. Exp. Med., 2003, Vol. 198, no. 12, pp. 1797-1806.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Li Z., Li D., Tsun A., Li B. FOXP3+ regulatory T cells and their functional regulation. Cell. Mol. Immunol., 2015, Vol. 12, no. 5, pp. 558-565.</mixed-citation><mixed-citation xml:lang="en">Li Z., Li D., Tsun A., Li B. FOXP3+ regulatory T cells and their functional regulation. Cell. Mol. Immunol., 2015, Vol. 12, no. 5, pp. 558-565.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Salomon B., Lenschow D.J., Rhee L., Ashourian N., Singh B., Sharpe A., Bluestone J.A. B7/CD28 costimulation is essential for the homeostasis of the CD4+CD25+ immunoregulatory T cells that control autoimmune diabetes. Immunity, 2000, Vol. 12, no. 4, pp. 431-440.</mixed-citation><mixed-citation xml:lang="en">Salomon B., Lenschow D.J., Rhee L., Ashourian N., Singh B., Sharpe A., Bluestone J.A. B7/CD28 costimulation is essential for the homeostasis of the CD4+CD25+ immunoregulatory T cells that control autoimmune diabetes. Immunity, 2000, Vol. 12, no. 4, pp. 431-440.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Shevyrev D.V., Blinova E.A., Kozlov V.A. The influence of humoral factors of homeostatic proliferation on T-regulatory cells in vitro. Bulletin of Siberian Medicine, 2019, Vol. 18, no. 1, pp. 286-293. (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Shevyrev D.V., Blinova E.A., Kozlov V.A. The influence of humoral factors of homeostatic proliferation on T-regulatory cells in vitro. Bulletin of Siberian Medicine, 2019, Vol. 18, no. 1, pp. 286-293. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Shevyrev D.V., Kozlov V.A. The role of homeostatic proliferation and SNP mutations in MHC genes in the development of rheumatoid arthritis. Annals of the Russian Academy of Medical Sciences., 2020, Vol. 75, no. 6, pp. 638-646. (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Shevyrev D.V., Kozlov V.A. The role of homeostatic proliferation and SNP mutations in MHC genes in the development of rheumatoid arthritis. Annals of the Russian Academy of Medical Sciences., 2020, Vol. 75, no. 6, pp. 638-646. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Shevyrev D.V., Tereshchenko V.P. Treg heterogeneity, function, and homeostasis. Front. Immunol., 2020, Vol. 10, 3100. doi: 10.3389/fimmu.2019.03100.</mixed-citation><mixed-citation xml:lang="en">Shevyrev D.V., Tereshchenko V.P. Treg heterogeneity, function, and homeostasis. Front. Immunol., 2020, Vol. 10, 3100. doi: 10.3389/fimmu.2019.03100.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Shevyrev D.V., Tereshchenko V.P., Kozlov V.A. Homeostatic proliferation: from health to pathology. Russian Journal of Immunology, 2018, Vol. 21, no. 2, pp. 91-105. (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Shevyrev D.V., Tereshchenko V.P., Kozlov V.A. Homeostatic proliferation: from health to pathology. Russian Journal of Immunology, 2018, Vol. 21, no. 2, pp. 91-105. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Sprouse M.L., Shevchenko I., Scavuzzo M.A., Joseph F., Lee T., Blum S., Borowiak M., Bettini M.L., Bettini M. Cutting edge: low-affinity TCRs support regulatory T Cell function in autoimmunity. J. Immunol., 2018, Vol. 200, no. 3, pp. 909-914.</mixed-citation><mixed-citation xml:lang="en">Sprouse M.L., Shevchenko I., Scavuzzo M.A., Joseph F., Lee T., Blum S., Borowiak M., Bettini M.L., Bettini M. Cutting edge: low-affinity TCRs support regulatory T Cell function in autoimmunity. J. Immunol., 2018, Vol. 200, no. 3, pp. 909-914.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Vang K.B., Yang J., Mahmud S.A., Burchill M.A., Vegoe A.L., Farrar M.A. IL-2, -7, and -15, but not thymic stromal lymphopoeitin, redundantly govern CD4+Foxp3+ regulatory T cell development. J. Immunol., 2008, Vol. 181, no. 5, pp. 3285-3290.</mixed-citation><mixed-citation xml:lang="en">Vang K.B., Yang J., Mahmud S.A., Burchill M.A., Vegoe A.L., Farrar M.A. IL-2, -7, and -15, but not thymic stromal lymphopoeitin, redundantly govern CD4+Foxp3+ regulatory T cell development. J. Immunol., 2008, Vol. 181, no. 5, pp. 3285-3290.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Zorn E., Nelson E.A., Mohseni M., Porcheray F., Kim H., Litsa D., Bellucci R., Raderschall E., Canning C., Soiffer R.J., Frank D.A., Ritz J. IL-2 regulates FOXP3 expression in human CD4+CD25+ regulatory T cells through a STAT-dependent mechanism and induces the expansion of these cells in vivo. Blood, 2006, Vol. 108, no. 5, pp. 1571-1579.</mixed-citation><mixed-citation xml:lang="en">Zorn E., Nelson E.A., Mohseni M., Porcheray F., Kim H., Litsa D., Bellucci R., Raderschall E., Canning C., Soiffer R.J., Frank D.A., Ritz J. IL-2 regulates FOXP3 expression in human CD4+CD25+ regulatory T cells through a STAT-dependent mechanism and induces the expansion of these cells in vivo. Blood, 2006, Vol. 108, no. 5, pp. 1571-1579.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Zou T., Satake A., Corbo-Rodgers E., Schmidt A.M., Farrar M.A., Maltzman J.S., Kambayashi T. Cutting edge: IL-2 signals determine the degree of TCR signaling necessary to support regulatory T cell proliferation in vivo. J. Immunol., 2012, Vol. 189, no. 1, pp. 28-32.</mixed-citation><mixed-citation xml:lang="en">Zou T., Satake A., Corbo-Rodgers E., Schmidt A.M., Farrar M.A., Maltzman J.S., Kambayashi T. Cutting edge: IL-2 signals determine the degree of TCR signaling necessary to support regulatory T cell proliferation in vivo. J. Immunol., 2012, Vol. 189, no. 1, pp. 28-32.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
