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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Cytokines and inflammation</journal-id><journal-title-group><journal-title xml:lang="en">Cytokines and inflammation</journal-title><trans-title-group xml:lang="ru"><trans-title>Цитокины и воспаление</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1684-7849</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">693205</article-id><article-id pub-id-type="doi">10.17816/CI693205</article-id><article-id pub-id-type="edn">XIHNMN</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Reviews</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Научные обзоры</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">T-regulatory cells as a target for nanoparticles in modern biomedicine</article-title><trans-title-group xml:lang="ru"><trans-title>Т-регуляторные клетки как мишень для наночастиц в современной биомедицине</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6474-1487</contrib-id><contrib-id contrib-id-type="spin">3579-1451</contrib-id><name-alternatives><name xml:lang="en"><surname>Zamorina</surname><given-names>Svetlana A.</given-names></name><name xml:lang="ru"><surname>Заморина</surname><given-names>Светлана Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biology), Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>д-р биол. наук, Институт экологии и генетики микроорганизмов Уральского отделения Российской академии наук</p></bio><email>zamorina.sa@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-3879-1879</contrib-id><name-alternatives><name xml:lang="en"><surname>Devyatova</surname><given-names>Kseniya O.</given-names></name><name xml:lang="ru"><surname>Девятова</surname><given-names>Ксения Олеговна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>xdevyatova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0436-0890</contrib-id><contrib-id contrib-id-type="spin">1225-0890</contrib-id><name-alternatives><name xml:lang="en"><surname>Usanina</surname><given-names>Darya I.</given-names></name><name xml:lang="ru"><surname>Усанина</surname><given-names>Дарья Игоревна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>Институт экологии и генетики микроорганизмов Уральского отделения Российской академии наук</p></bio><email>usanina_d@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Perm State National Research University</institution></aff><aff><institution xml:lang="ru">Пермский государственный национальный исследовательский университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Perm Federal Research Center Ural Branch Russian Academy Sciences</institution></aff><aff><institution xml:lang="ru">Пермский федеральный исследовательский центр Уральского отделения Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-11-17" publication-format="electronic"><day>17</day><month>11</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-12-01" publication-format="electronic"><day>01</day><month>12</month><year>2025</year></pub-date><volume>22</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>50</fpage><lpage>60</lpage><history><date date-type="received" iso-8601-date="2025-10-15"><day>15</day><month>10</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-11-09"><day>09</day><month>11</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Zamorina S.A., Devyatova K.O., Usanina D.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Заморина С.А., Девятова К.О., Усанина Д.И.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Zamorina S.A., Devyatova K.O., Usanina D.I.</copyright-holder><copyright-holder xml:lang="ru">Заморина С.А., Девятова К.О., Усанина Д.И.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2027-12-01"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://cijournal.ru/1684-7849/article/view/693205">https://cijournal.ru/1684-7849/article/view/693205</self-uri><abstract xml:lang="en"><p>Many recent studies have focused on regulatory T cells (Tregs). These cells are crucial to maintain immune tolerance and regulate the immune response to autoantigens, allergens, pathogens, and tumors. Manipulating Treg activity and differentiation is considered a potential approach for treating immune-mediated diseases. There are currently two main strategies: inducing or suppressing the activity of these cells. Several studies have demonstrated that eliminating or suppressing Tregs from the tumor microenvironment improves the prognosis of patients with cancer.</p> <p>Nanotechnologies opens up new possibilities for manipulating Tregs using different types of nanoparticles, including inorganic, organic, and hybrid ones. Through antibodies, RNA, peptides, and toxins conjugated to them, it is possible to create nanoparticles that selectively affect Tregs. However, clinical application of these nanoparticles is limited by several factors, such as poorly understood long-term toxicity, stability, and <italic>in vivo </italic>biocompatibility. Once these limitations are overcome, nanoparticles will undoubtedly lead to new approaches for treating immune-mediated diseases by manipulating Treg activity.</p> <p>This review analyzes the potential for direct interaction between Tregs and various types of nanoparticles. Publications from 2009 to 2025 were searched in the PubMed, Scopus, and Google Scholar databases using the keywords <italic>Treg</italic>, <italic>nanoparticles</italic>, and <italic>in vitro</italic>.</p></abstract><trans-abstract xml:lang="ru"><p>В последние годы активно изучаются регуляторные Т-клетки (Treg), играющие ключевую роль в поддержании иммунной толерантности и контроле иммунного ответа против собственных антигенов, аллергенов, патогенов и опухолей. Манипулирование активностью и дифференцировкой Treg рассматривается как потенциальный подход к лечению иммуноопосредованных заболеваний. В настоящее время используются две основные стратегии — индукция или подавление активности этих клеток. Удаление или супрессия Treg из опухолевого микроокружения, как показано в ряде исследований, улучшает прогноз у онкологических пациентов.</p> <p>Нанотехнологии открывают новые возможности для манипулирования Treg с помощью наночастиц разной природы — неорганических, органических и гибридных. Возможно создание наночастиц, избирательно воздействующих на Treg посредством конъюгированных с ними антител, РНК, пептидов и токсинов. Однако клиническое применение таких наночастиц пока ограничено рядом факторов, среди которых — недостаточно изученная долгосрочная токсичность, стабильность и биосовместимость <italic>in vivo</italic>. После преодоления этих ограничений наночастицы, безусловно, откроют новые терапевтические подходы к лечению иммуноопосредованных заболеваний через манипулирование активностью Treg.</p> <p>В данном обзоре проанализированы варианты прямого взаимодействия Treg с наночастицами различной природы. Поиск публикаций проводили в базах данных PubMed, Scopus, Google scholar по ключевым словам «Treg», «nanoparticles», «<italic>in vitro</italic>» за 2009–2025 гг.</p></trans-abstract><kwd-group xml:lang="en"><kwd>T-regulatory cells</kwd><kwd>nanoparticles</kwd><kwd>biomedicine</kwd><kwd>in vitro</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>T-регуляторные клетки</kwd><kwd>наночастицы</kwd><kwd>биомедицина</kwd><kwd>in vitro</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>075-00567-24-01</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Vignali DA, Collison LW, Workman CJ. 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