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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">10.21294/1814-4861-2025-24-5-64-71</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-3858</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>Транскриптомные характеристики макрофагов микроокружения опухоли у пациенток с трижды негативным раком молочной железы в зависимости от PD-L1 статуса опухоли</article-title><trans-title-group xml:lang="en"><trans-title>Transcriptomic characteristics of tumor-associated macrophages in the microenvironment of triple-negative breast cancer depending on PD-L1 status</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2106-3513</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>SPIN-код: 3763-0291</p><p>Researcher ID (WOS): ABF-1277-2022</p><p>Author ID (Scopus): 57797359600</p><p>634009, Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>Anna Yu. Kalinchuk - Junior Researcher, Laboratory of Molecular Cancer Therapy, Cancer Research Institute</p><p>Researcher ID (WOS): ABF-1277-2022</p><p>Author ID (Scopus): 57797359600</p><p>5, Kooperativny St., Tomsk, 634009</p></bio><email xlink:type="simple">annakalinchuk2022@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-4437-6583</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пацкан</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Patskan</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пацкан Иван Андреевич, лаборант-исследователь лаборатории молекулярной терапии рака</p><p>SPIN-код: 4880-3416</p><p>Researcher ID (WOS): OJU-3352-2025</p><p>Author ID (Scopus): 59384926800</p><p>634009, Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>Ivan A. Patskan - Research Assistant, Laboratory of Molecular Cancer Therapy, Cancer Research Institute</p><p>Researcher ID (WOS): OJU-3352-2025</p><p>Author ID (Scopus): 59384926800</p><p>5, Kooperativny St., Tomsk, 634009</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/0000-0002-1195-4008</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вторушин</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vtorushin</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вторушин Сергей Владимирович - доктор медицинских наук, профессор, заместитель директора по научной работе и трансляционной медицине, руководитель отделения общей и молекулярной патологии, Научно-исследовательский институт онкологии</p><p>SPIN-код: 2442-4720</p><p>Researcher ID (WOS): S-3789-2016</p><p>Author ID (Scopus): 26654562300</p><p>634009, Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>Sergey V. Vtorushin - MD, DSc, Professor, Deputy Director for Research and Translational Medicine, Head of the Department of General and Molecular Pathology, Cancer Research Institute</p><p>Researcher ID (WOS): S-3789-2016</p><p>Author ID (Scopus): 26654562300</p><p>5, Kooperativny St., Tomsk, 634009</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/0000-0003-2061-8417</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, Научно-исследовательский институт онкологии</p><p>SPIN-код: 4371-5340</p><p>Researcher ID (WОS): C-8222-2012</p><p>Author ID (Scopus): 55234960400</p><p>634009, Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>Liubov A. Tashireva - MD, DSc, Head of the Laboratory of Molecular Cancer Therapy, Cancer Research Institute</p><p>Researcher ID (WОS): C-8222-2012</p><p>Author ID (Scopus): 55234960400</p><p>5, Kooperativny St., Tomsk, 634009</p></bio><xref ref-type="aff" rid="aff-1"/></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 Россия</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>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>11</month><year>2025</year></pub-date><volume>24</volume><issue>5</issue><fpage>64</fpage><lpage>71</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Калинчук А.Ю., Пацкан И.А., Вторушин С.В., Таширева Л.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Калинчук А.Ю., Пацкан И.А., Вторушин С.В., Таширева Л.А.</copyright-holder><copyright-holder xml:lang="en">Kalinchuk A.Y., Patskan I.A., Vtorushin S.V., Tashireva L.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.siboncoj.ru/jour/article/view/3858">https://www.siboncoj.ru/jour/article/view/3858</self-uri><abstract><p>Цель исследования – охарактеризовать транскриптомные особенности кластеров CD68+ и CD163+ макрофагов в опухолевом микроокружении у пациенток с трижды негативным раком молочной железы (ТНРМЖ) в зависимости от PD-L1 статуса опухоли. Материал и методы. В исследование включено 11 пациенток с ТНРМЖ. PD-L1 статус определяли методом иммуногистохимии. Пространственное транскриптомное профилирование выполняли с использованием платформы Visium 10x Genomics.</p><p>Аннотацию CD68+ и CD163+ кластеров проводили в программе Loupe Browser 8.0.0. Дифференциальную экспрессию генов и обогащение биологических путей анализировали для CD68+ и CD163+ кластеров в группах с позитивным и негативным PD-L1 статусом. Результаты. В опухолях с позитивным PD-L1 статусом выявлен компенсаторный рекрутинг иммунных клеток при признаках их функционального истощения, в который вовлекаются CD68+ макрофаги. При негативном PD-L1 статусе микроокружение характеризовалось активным адаптивным иммунным ответом с участием CD68+ макрофагов как антиген-презентирующих клеток, но с выраженными элементами негативной регуляции воспаления, ассоциированной с CD163+ макрофагами. Заключение. Функциональное состояние макрофагов и клеточных компонентов микроокружения ТНРМЖ существенно различается в зависимости от PD-L1 статуса опухоли. Полученные данные могут способствовать идентификации биомаркеров ответа на иммунотерапию у данной категории пациенток.</p></abstract><trans-abstract xml:lang="en"><sec><title>Objective</title><p>Objective: to characterize the transcriptomic features of CD68+ and CD163+ macrophage clusters within the tumor microenvironment of patients with triple-negative breast cancer (TNBC), depending on the PD-L1 status of the tumor.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. Eleven patients with TNBC were included in the study. PD-L1 status was assessed by immunohistochemistry. Spatial transcriptomic profiling was performed using the Visium 10x Genomics platform. Cluster annotation for CD68+ and CD163+ cells was carried out in Loupe Browser 8.0.0. Differential gene expression and pathway enrichment analysis were performed for CD68+ and CD163+ clusters in PD-L1-positive and PD-L1-negative groups.</p></sec><sec><title>Results</title><p>Results. PD-L1-positive tumors showed compensatory recruitment of immune cells with features of functional exhaustion, in which CD68+ macrophages were involved. In contrast, PD-L1-negative tumors were characterized by an active adaptive immune response, with CD68+ macrophages functioning as antigen-presenting cells, together with evidence of negative regulation of inflammation associated with CD163+ macrophages.</p></sec><sec><title>Conclusion</title><p>Conclusion. The functional state of macrophages and other cellular components of the TNBC microenvironment varies significantly with PD-L1 status. These results may contribute to the identification of biomarkers for predicting immunotherapy response in this patient group.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>макрофаги</kwd><kwd>опухолевое микроокружение</kwd><kwd>пространственное профилирование транскриптома</kwd><kwd>PD-L1</kwd><kwd>трижды негативный рак молочной железы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>macrophages</kwd><kwd>tumor microenvironment</kwd><kwd>spatial transcriptomics</kwd><kwd>PD-L1</kwd><kwd>triple-negative breast cancer</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке РНФ (грант 25-25-00345)</funding-statement><funding-statement xml:lang="en">This study was supported by the Russian Science Foundation (grant 25-25-00345)</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">Borri F., Granaglia A. 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