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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">oncotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский онкологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian journal of oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-4861</issn><issn pub-type="epub">2312-3168</issn><publisher><publisher-name>Tomsk National Research Medical Сепtеr of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21294/1814-4861-2024-23-3-64-72</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-3114</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>ЛАБОРАТОРНЫЕ И ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LABORATORY AND EXPERIMENTAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Субпопуляционный состав PD-L1-позитивных лимфоцитов в первичной опухоли у больных люминальными формами рака молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>Subpopulation composition of PD-L1-positive lymphocytes in the primary tumour in luminal breast cancer patients</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2061-8417</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Таширева</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tashireva</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Таширева Любовь Александровна, доктор медицинских наук, заведующая лабораторией молекулярной терапии рака</p><p>Researcher ID (WOS): C-8222-2012. Author ID (Scopus): 55234960400 </p><p> Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Lyubov A. Tashireva, MD, DSc, Head of the Laboratory of Molecular Cancer Therapy</p><p>Researcher ID (WOS): C-8222-2012. Author ID (Scopus): 55234960400 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><email xlink:type="simple">tashireva@oncology.tomsk.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/0000-0003-2106-3513</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калинчук</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalinchuk</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Калинчук Анна Юрьевна, младший научный сотрудник лаборатории молекулярной терапии рака</p><p>Researcher ID (WOS): ABF-1277-2022. Author ID (Scopus): 57797359600</p><p> Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Anna Yu. Kalinchuk, Junior Researcher, Laboratory of Molecular Cancer Therapy, </p><p>Researcher ID (WOS): ABF-1277-2022. Author ID (Scopus): 57797359600 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3025-4445</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алифанов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Alifanov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алифанов Владимир Валерьевич, младший научный сотрудник отделения общей и молекулярной патологии</p><p>Researcher ID (WOS): AAW-8959-2021. Author ID (Scopus): 57225891731</p><p>Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Vladimir V. Alifanov, Junior Researcher, Department of General and Molecular Pathology</p><p>Researcher ID (WOS): AAW-8959-2021. Author ID (Scopus): 57225891731 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4737-8951</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Григорьева</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigoryeva</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Григорьева Евгения Сергеевна, кандидат медицинских наук, старший научный сотрудник лаборатории молекулярной терапии рака</p><p>Researcher ID (WOS): C-8571-2012. Author ID (Scopus): 21934560600</p><p>Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Evgeniya S. Grigoryeva, MD, PhD, Senior Researcher, Laboratory of Molecular Cancer Therapy</p><p>Researcher ID (WOS): C-8571-2012. Author ID (Scopus): 21934560600 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0909-9206</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Андрюхова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Andriukhova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрюхова Елена Сергеевна, младший научный сотрудник отделения общей и молекулярной патологии</p><p>Researcher ID (WOS): HLQ-4107-2023. Author ID (Scopus): 57345049300</p><p>Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Elena S. Andriukhova, Junior Researcher, Department of General and Molecular Pathology</p><p>Researcher ID (WOS): HLQ-4107-2023, Author ID (Scopus): 57345049300 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1909-1681</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крахмаль</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Krakhmal</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Крахмаль Надежда Валерьевна, кандидат медицинских наук, доцент, старший научный сотрудник отделения общей и молекулярной  патологии</p><p>Researcher ID (WOS): S-3799-2016. Author ID (Scopus): 56678622400</p><p>Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Nadezhda V. Krakhmal, MD, PhD, Assistant of Professor, Senior Researcher, Department of General and Molecular Pathology</p><p>Researcher ID (WOS): S-3799-2016. Author ID (Scopus): 56678622400 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5294-778X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Попова</surname><given-names>Н. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Popova</surname><given-names>N. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Попова Наталия Олеговна, кандидат медицинских наук, старший научный сотрудник отделения химиотерапии</p><p>Researcher ID (WOS): I-9417-2017. Author ID (Scopus): 7201879486 </p><p> Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Natalia O. Popova, MD, PhD, Senior Researcher, Department of Chemotherapy, </p><p>Researcher ID (WOS): I-9417-2017. Author ID (Scopus): 7201879486 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7633-9620</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Перельмутер</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Perelmuter</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Перельмутер Владимир Михайлович, доктор медицинских наук, профессор, главный научный сотрудник отделения общей и молекулярной патологии</p><p>Researcher ID (WOS): C-8227-2012. Author ID (Scopus): 8091317300</p><p>Россия, 634009, г. Томск, пер. Кооперативный, 5 </p></bio><bio xml:lang="en"><p>Vladimir M. Perelmuter, MD, DSc, Professor, Chief Researcher of the Department of General and Molecular Pathology</p><p>Researcher ID (WOS): C-8227-2012. Author ID (Scopus): 8091317300 </p><p>5, Kooperativny St., Tomsk, 634009, Russia</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт онкологии, Томский национальный исследовательский медицинский центр Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Научно-исследовательский институт онкологии,  Томский национальный исследовательский  медицинский центр Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>03</day><month>07</month><year>2024</year></pub-date><volume>23</volume><issue>3</issue><fpage>64</fpage><lpage>72</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Таширева Л.А., Калинчук А.Ю., Алифанов В.В., Григорьева Е.С., Андрюхова Е.С., Крахмаль Н.В., Попова Н.О., Перельмутер В.М., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Таширева Л.А., Калинчук А.Ю., Алифанов В.В., Григорьева Е.С., Андрюхова Е.С., Крахмаль Н.В., Попова Н.О., Перельмутер В.М.</copyright-holder><copyright-holder xml:lang="en">Tashireva L.A., Kalinchuk A.Y., Alifanov V.V., Grigoryeva E.A., Andriukhova E.S., Krakhmal N.V., Popova N.O., Perelmuter V.M.</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.siboncoj.ru/jour/article/view/3114">https://www.siboncoj.ru/jour/article/view/3114</self-uri><abstract><p>Взаимосвязь между опухолью и ее микроокружением представляет большой интерес, поскольку может определять эффективность новых агентов лекарственного лечения РМЖ, нацеленных на модуляцию противоопухолевых иммунных реакций, например, ингибиторов иммунных контрольных точек (ИИКТ). При назначении ИИКТ при раке молочной железы оценка PD -L1-статуса должна проводиться в иммунных клетках. Это подчеркивает важность изучения особенностей опухолевого микроокружения, основным подходом к которому является раскрытие его гетерогенности. Цель исследования – изучение субпопуляционного состава PD -L1-положительных лимфоцитов опухолевого микроокружения отдельно в каждом из подтипов люминальных форм РМЖ и его сравнение в зависимости от PD -L1-статуса опухоли. Материал и методы. Были получены 52 образца опухоли из первичного очага от пациенток с инвазивной карциномой молочной железы люминального А, люминального В HER2- и люминального В HER2+ подтипов (Т1–2N0–1M0). Ни одна пациентка не получала лекарственную терапию до операции. Оценка содержания цитотоксических лимфоцитов (ЦТЛ), В-лимфоцитов, Т-хелперных лимфоцитов, Т-регуляторных лимфоцитов и экспрессия ими PD -L1 в образцах опухолевой ткани была выполнена с помощью проточной цитофлуориметрии, а статус PD -L1 в опухоли был определен с помощью иммуногистохимического теста Ventana SP 142. Результаты. Все определяемые нами основные популяции лимфоцитов обнаруживались практически у всех пациенток. Количество PD -L1-положительных Th2-лимфоцитов в образцах люминального А и люминального В HER2- РМЖ было значимо большим по сравнению с люминальными В HER2+ случаями (р=0,0240 и р=0,0092, соответственно). При расчете доли PD -L1-положительных клеток оказалось, что доля PD -L1-положительных Th2-лимфоцитов и Т-регуляторных лимфоцитов значимо меньше у больных люминальным В HER2- по сравнению с люминальным А РМЖ. Цитотоксические лимфоциты, Тh2-лимфоциты и Т-регуляторные лимфоциты составляли большую часть PD -L1-положительных иммунных клеток в микроокружении рака молочной железы и в большем количестве присутствовали в PD -L1-положительных опухолях люминального В HER2-. Заключение. В микроокружении рака молочной железы соседствуют различные популяции лимфоцитов, в том числе экспрессирующих PD -L1, причем существуют различия в их количестве между различными люминальными формами РМЖ. Возможно, этим объясняется противоречивая прогностическая и предиктивная значимость микроокружения при люминальных формах РМЖ, когда их рассматривают как один молекулярный подтип.</p></abstract><trans-abstract xml:lang="en"><p>The relationship between the tumour and the microenvironment is of great interest because it may determine the efficacy of new agents aimed at targeting the anti-tumour immune response, such as immune checkpoint inhibitors (ICI s), which have been used to treat breast cancer. PD -L1 status in immune cells should be examined when prescribing ICI s for breast cancer. This highlights the importance of studying the characteristics of the tumour microenvironment, the main approach being to uncover its heterogeneity. The aim of this study was to investigate the subpopulation composition of PD -L1-positive lymphocytes in the tumour microenvironment, separately in each luminal subtype of BC, and to compare it according to the PD -L1 status of the tumour. Material and Methods. Fifty-two primary tumour samples were obtained from patients with invasive luminal A, luminal B HER2- and luminal B HER2+ subtypes of breast cancer (T1–2N0–1M0). No drug therapy was administered prior to surgery to any patient in this study. Cytotoxic lymphocytes (CTL s), B lymphocytes, T helper lymphocytes, T regulatory lymphocytes and their PD -L1 expression in tumour tissue samples were assessed by flow cytometry, and tumour PD -L1 status was determined by Ventana SP 142 immunohistochemistry. Results. All of the key lymphocyte populations we identified were present in almost all patients. The number of PD -L1-positive Th2 lymphocytes was significantly higher in the luminal A and luminal B HER2- BC samples compared to the luminal B HER2+ cases (р=0.0240 and p=0.0092, respectively). When the proportion of PD -L1-positive cells was calculated, the proportion of PD -L1-positive Th2 lymphocytes and T regulatory lymphocytes was significantly lower in luminal B HER2-compared to luminal A BC. Cytotoxic lymphocytes, Th2 lymphocytes and T-regulatory lymphocytes represented the predominant PD -L1-positive immune cells in the breast cancer microenvironment and were present in higher numbers in PD -L1-positive luminal B HER2-. Conclusions. Different lymphocyte populations, including those expressing PD -L1, can be found in the breast cancer microenvironment and there are differences in their numbers between different luminal breast cancers. This may explain the discordant prognostic and predictive value of the microenvironment in luminal breast cancer when considered as a single molecular subtype.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>микроокружение</kwd><kwd>лимфоциты</kwd><kwd>PD-L1-статус.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>microenvironment</kwd><kwd>lymphocytes</kwd><kwd>PD-L1 status</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда (грант № 20-75-10033). Работа выполнена с использованием оборудования ЦКП «Медицинская геномика» Томского НИМЦ.</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation (grant No. 20-75-10033). The study was carried out using the equipment of the Center for Collective Use “Medical Genomics” of the Tomsk National Research Medical Center.</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">Mezheyeuski A., Backman M., Mattsson J., Martín-Bernabé A., Larsson C., Hrynchyk I., Hammarström K., Ström S., Ekström J., Mauchanski S., Khelashvili S., Lindberg A., Agnarsdóttir M., Edqvist P.H., Huvila J., Segersten U., Malmström P.U., Botling J., Nodin B., Hedner C., Borg D., Brändstedt J., Sartor H., Leandersson K., Glimelius B., Portyanko A., Ponten F., Jirström K., Micke P., Sjöblom T. 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