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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-EOI-16894</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-3093</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 маркеров контрольных точек иммунного ответа лимфоцитами периферической крови у женщин с фиброаденомой молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>Expression of immune checkpoint markers in peripheral blood lymphocytes of women with fibroadenoma of the breast</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>Курмышкина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurmyshkina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курмышкина Ольга Вадимовна – к.б.н., доцент кафедры биомедицинской химии, иммунологии и лабораторной диагностики.</p><p>185910, Петрозаводск, пр. Ленина, 33</p><p>Тел.: 8 (8142) 78-46-97</p></bio><bio xml:lang="en"><p>Olga V. Kurmyshkina - PhD (Biology), Associate Professor, Department of Biomedical Chemistry, Immunology, and Laboratory Diagnostics, Petrozavodsk State University.</p><p>33 Lenin St Petrozavodsk 185910</p><p>Phone: +7 (8142) 78-46-97</p></bio><email xlink:type="simple">VolkovaTO@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>Куликовская</surname><given-names>Т. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulikovskaya</surname><given-names>T. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>К.м.н., доцент кафедры общей и факультетской хирургии.</p><p>Петрозаводск</p></bio><bio xml:lang="en"><p>PhD (Medicine), Associate Professor, Department of General and Faculty Surgery, Petrozavodsk State University.</p><p>Petrozavodsk</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>Волкова</surname><given-names>Т. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkova</surname><given-names>T. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.б.н., доцент, заведующая кафедрой биомедицинской химии, иммунологии и лабораторной диагностики.</p><p>Петрозаводск</p></bio><bio xml:lang="en"><p>PhD, MD (Biology), Associate Professor, Head, Department of Biomedical Chemistry, Immunology, and Laboratory Diagnostics, Petrozavodsk State University.</p><p>Petrozavodsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБОУ ВО «Петрозаводский государственный университет»<country>Россия</country></aff><aff xml:lang="en">Petrozavodsk State University<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>975</fpage><lpage>982</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Курмышкина О.В., Куликовская Т.М., Волкова Т.О., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Курмышкина О.В., Куликовская Т.М., Волкова Т.О.</copyright-holder><copyright-holder xml:lang="en">Kurmyshkina O.V., Kulikovskaya T.M., Volkova T.O.</copyright-holder><license 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/3093">https://www.mimmun.ru/mimmun/article/view/3093</self-uri><abstract><p>Изменения иммунного статуса при фиброаденоме (ФА) и других доброкачественных патологиях молочной железы – малоисследованный вопрос, равно как и участие регуляторов контрольных точек иммунного ответа (КИТ) в патогенезе данной группы заболеваний. Целью работы являлось сравнение уровня экспрессии маркеров КИТ CD279/PD-1, CD274/PD-L1, CD366/TIM3 и CD223/ LAG3 в общей популяции лимфоцитов, ее Т-клеточного звена и, в отдельности, CD4 и CD8 субпопуляций в периферической крови женщин с ФА и здоровых доноров. Образцы периферической крови были получены от 12 женщин с диагнозом фиброаденома молочной железы (23-54 лет) и 15 здоровых женщин (22-52 лет), составивших группу контроля. Забор крови в группе больных производился непосредственно перед хирургической операцией, далее образцы анализировались методом мультипараметрической проточной цитометрии с использованием моноклональных антител: CD3-VioBlue, CD4/CD8-FITC, PD1-PE, PD-L1-PerCP-Cy.5.5, TIM3/LAG3-APC. Каждый образец инкубировался с 4 комбинациями антител: CD3/CD4/PD1/PD-L1/TIM3, CD3/CD4/PD1/PD-L1/LAG3, CD3/CD8/ PD1/PD-L1/TIM3, CD3/CD8/PD1/PD-L1/LAG3. Была проведена оценка моноэкспрессии каждого из 4-х маркеров контрольных иммунных точек (КИТ) в лимфоцитарном гейте обеих групп. В образцах крови группы ФА получено значимое увеличение экспрессии PD-L1, выраженной в % окрашенных клеток и приросте интенсивности флуоресценции. При анализе моноэкспрессии КИТ в популяции CD3+Т-лимфоцитов, кроме достоверного увеличения % PD-L1+, также обнаружено повышение доли PD1+Т-клеток в группе ФА. В отношении различий между изменениями моноэкспрессии КИТ в CD4+ и CD8+ Т-клеточном звене, в группе ФА наблюдалось более выраженное увеличение доли CD8+PD1+Т-клеток, по сравнению с CD4. Характер изменений PD-L1 был сопоставим для CD4 и CD8 субпопуляций (в обоих случаях достоверное увеличение в группе ФА). Были проанализированы изменения профиля коэкспрессии двух КИТ в CD4+ и CD8+ звене Т-клеток. Наиболее заметным оказалось увеличение частоты фенотипа PD1+PD-L1+ в обеих субпопуляциях Т-клеток при сравнении ФА и группы контроля. В отношении совместной экспрессии трех маркеров КИТ в CD4 и CD8 субпопуляциях, было получено достоверное увеличение %-доли PD1+PD-L1+TIM3+ клеток среди CD4 Т-хелперов. Таким образом, в системной циркуляции женщин с диагнозом ФА могут наблюдаться специфические изменения фенотипа Т-клеток, связанные с (ко-)экспрессией регуляторов КИТ.</p></abstract><trans-abstract xml:lang="en"><p>Changes of the immune state in patients with fibroadenoma (FA) or other benign lesions of the breast, as well as the involvement of immune checkpoints in pathogenesis of these lesions, remain underexplored. The aim of this study was to compare the expression level of the key immune checkpoint markers CD279/PD-1, CD274/PD-L1, CD366/TIM3, and CD223/LAG3 in total circulating lymphocytes, T cell population as well as in its CD4 and CD8 subsets in peripheral blood from women with breast FA and healthy controls. Blood samples were taken from 12 women diagnosed with FA of the breast (aged 23-54 years, FA group) and 15 healthy women (aged 22-52 years, control group). Sample uptake was performed immediately before surgery, and samples were further analyzed by multicolor flow cytometry using monoclonal antibodies CD3-VioBlue, CD4/CD8-FITC, PD1-PE, PD-L1-PerCP-Cy.5.5, and TIM3/LAG3-APC. Each sample was incubated with 4 antibody combinations: CD3/CD4/PD1/PD-L1/TIM3, CD3/CD4/PD1/PD-L1/LAG3, CD3/CD8/PD1/PD-L1/TIM3, and CD3/CD8/PD1/PD-L1/LAG3. First, mono-expression of each of the 4 immune checkpoint markers was evaluated in the lymphocyte gate from both investigated groups. In FA samples, a significant increase in PD-L1 expression (assessed as percent of positive cells and fluorescence intensity change) was observed. Regarding expression of immune checkpoints in CD3+ T cells, along with significantly increased %PD-L1+, elevated numbers of PD1+T cells were detected. As for the differences in immune checkpoint expression changes between CD4+ and CD8+ T cell subsets, FA patient group demonstrated a more prominent increase in the amount of CD8+PD1+T cells relative to CD4 subset. The profiles of PD-L1 changes in CD4 and CD8 subpopulations were comparable showing, in both cases, a significant increase in FA sample group. We also analyzed changes in co-expression of any two immune checkpoint markers in CD4+ and CD8+ T cell subsets. The most noticeable was as increase in the prevalence of PD1+PD-L1+ phenotype in both T cell subpopulations from FA patients compared to the controls. With respect to co-expression of 3 checkpoint markers in CD4+ and CD8+ T cells, a significant increase in the percentage of PD1+PD-L1+TIM3+ cells among CD4 T helpers was found in FA. Thus, specific changes of T cell phenotype related to (co-)expression of immune checkpoint regulators may occur in systemic circulation of women with breast FA.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фиброаденома молочной железы</kwd><kwd>контрольные точки иммунного ответа</kwd><kwd>лимфоциты периферической крови</kwd><kwd>проточная цитометрия</kwd><kwd>коэкспрессия</kwd><kwd>иммунорегуляция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fibroadenoma of the breast</kwd><kwd>immune checkpoints</kwd><kwd>peripheral blood lymphocytes</kwd><kwd>flow cytometry</kwd><kwd>co-expression</kwd><kwd>immune regulation</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">Adhikary S., Hoskin T.L., Stallings-Mann M.L., Arshad M., Frost M.H., Winham S.J., Peña A., Lee D.J., Murphy L.M., Rakoff M. 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