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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">nogr</journal-id><journal-title-group><journal-title xml:lang="ru">Экспериментальная и клиническая гастроэнтерология</journal-title><trans-title-group xml:lang="en"><trans-title>Experimental and Clinical Gastroenterology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-8658</issn><publisher><publisher-name>«Global Media Technologies»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31146/1682-8658-ecg-244-12-163-176</article-id><article-id custom-type="elpub" pub-id-type="custom">nogr-3297</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>ЭКСПЕРИМЕНТАЛЬНАЯ ГАСТРОЭНТЕРОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL GASTROENTEROLOGY</subject></subj-group></article-categories><title-group><article-title>Оценка изменений субпопуляционного состава клеточного иммунного инфильтрата сингенного колоректального рака MC38 на фоне курсового применения глутамилтриптофана: экспериментальное исследование</article-title><trans-title-group xml:lang="en"><trans-title>Assesment of changes in the pattern of immune cell infi ltrate subpopulation in syngeneic MC38 colorectal cancer during course administration of glutamyltryptophan: an experimental study</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>Савельев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Savelyev</surname><given-names>S. A.</given-names></name></name-alternatives><email xlink:type="simple">ssavelyev@cytomed.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>Муразов</surname><given-names>Я. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Murazov</surname><given-names>Ya. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бельтюков</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Beltiukov</surname><given-names>P. P.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Барышникова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Baryshnikova</surname><given-names>N. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петленко</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Petlenko</surname><given-names>S. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>АО «Медико-биологический научно-производственный комплекс «Цитомед»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>JSCo Cytomed</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>АО «Научно-производственное объединение «Дом Фармации»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Scientific Production Association “Home of Pharmacy”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГУП «НИИ гигиены, профпатологии и экологии человека» ФМБА России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Hygiene, Occupational Pathology and Human Ecology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ФГБОУ ВО «Санкт-Петербургский государственный педиатрический медицинский университет» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg State Pediatric Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>ФГБУ «Научно-клинический центр токсикологии им. акад. С.Н. Голикова» ФМБА России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>S.N. Golikov Research Clinical Center of Toxicology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>02</month><year>2026</year></pub-date><volume>0</volume><issue>12</issue><fpage>163</fpage><lpage>176</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Савельев С.А., Муразов Я.Г., Бельтюков П.П., Барышникова Н.В., Петленко С.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Савельев С.А., Муразов Я.Г., Бельтюков П.П., Барышникова Н.В., Петленко С.В.</copyright-holder><copyright-holder xml:lang="en">Savelyev S.A., Murazov Y.G., Beltiukov P.P., Baryshnikova N.V., Petlenko S.V.</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.nogr.org/jour/article/view/3297">https://www.nogr.org/jour/article/view/3297</self-uri><abstract><p>Несмотря на успехи в области скрининга и лечения рака желудка, актуальной остается проблема поиска и изучения эффективных методов лечения и профилактики предопухолевых заболеваний, включая хронический атрофический гастрит. Особое место среди стратегий профилактики злокачественных новообразований занимает иммунопрофилактика рака. Цель работы - оценить изменения субпопуляционного состава иммунного инфильтрата сингенной опухоли на фоне курсового применения глутамил-триптофана у мышей. Материалы и методы. Источником опухолевого материала служили клетки сингенного колоректального рака МС38, трансплантированные интрамаммарно. Экспериментальные животные получали глутамил-триптофан (0,02 мг/кг); контрольные - физиологический раствор. Введения были многократные, начиная за 14 дней до трансплантации и до 14-го или 21-го дня после трансплантации опухоли. Оценивали кинетику роста опухоли и субпопуляционный состав клеточного инфильтрата опухоли методом проточной цитометрии. Результаты. Введение глутамил-триптофана не оказало влияния на рост опухоли, но повлияло на клеточный состав иммунного инфильтрата на втором сроке исследования в виде снижения CD45+, повышения CD3+, снижения М2-подобных макрофагов с высоким уровнем экспрессии МНС. Оценка субпопуляций DN-клеток между двумя сроками анализа свидетельствует о росте DN в обеих группах. В контроле DN NK+ снижались в 2 раза, чего не наблюдалось в опытной группе. Снижение уровней CD3+CD8+ и NK1.1+ в обеих группах подтверждает прогрессирование опухоли. В контроле, в отличие от опытной группы, наблюдали резкое снижение CD3+, MHC II low CD206+ и DN NK1.1+, что можно рассматривать как переход опухолевого микроокружения в иммуносупрессивное состояние. Заключение. Впервые на модели трансплантируемой сингенной опухоли у иммунокомпетентных животных проведена оценка изменений состава иммунного инфильтрата на фоне применения глутамил-триптофана. Установлены возможные эффекторные клетки, ответственные за реализацию иммуноопосредованного надзора за промоцией и прогрессией трансплантированной опухоли в условиях эксперимента in vivo.</p></abstract><trans-abstract xml:lang="en"><p>Despite advances in gastric cancer screening and therapy, the search for effective methods for treating and preventing precancerous conditions, including chronic atrophic gastritis, remains an important challenge. Immunoprevention of cancer occupies a special place among strategies aimed at reducing the incidence of malignant neoplasms. The aim of this study was to assess changes in the subpopulation composition of the immune infiltrate in a syngeneic tumor model during course administration of glutamyl-tryptophan in mice. Materials and Methods. Tumor material was obtained from syngeneic MC38 colorectal cancer cells, transplanted intramammarily. Experimental animals received glutamyl-tryptophan (0.02 mg/kg), while control animals received saline. Repeated administrations were performed starting 14 days prior to tumor transplantation and continued until day 14 or day 21 after transplantation. Tumor growth kinetics and the subpopulation composition of the tumor immune infiltrate were assessed using flow cytometry. Results. Glutamyl-tryptophan administration did not affect tumor growth, but altered the cellular composition of the immune infiltrate at the second time point, manifested as a decrease in CD45+ cells, an increase in CD3+ cells, and a reduction in M2-like macrophages with high MHC expression. Analysis of DN-cell subpopulations at both time points demonstrated an increase in DN cells in both groups. In controls, DN NK+ cells decreased twofold, whereas no such decrease was observed in the experimental group. Reduced levels of CD3+CD8+ and NK1.1+ cells in both groups confirmed tumor progression. In contrast to the experimental group, the control group exhibited a pronounced decline in CD3+, MHC II low CD206+, and DN NK1.1+ cells, which may indicate a transition of the tumor microenvironment toward an immunosuppressive state. Conclusion. For the first time, changes in the composition of the immune infiltrate were evaluated in a model of a transplantable syngeneic tumor in immunocompetent animals treated with glutamyl-tryptophan. The study identified potential effector cell populations responsible for mediating immunosurveillance of tumor promotion and progression under in vivo experimental conditions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>глутамил-триптофан</kwd><kwd>сингенная опухоль МС38</kwd><kwd>иммунный инфильтрат</kwd><kwd>противоопухолевый иммунитет</kwd><kwd>регастим гастро</kwd><kwd>атрофический гастрит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>glutamyl-tryptophan</kwd><kwd>syngeneic MC38</kwd><kwd>immune infiltrate</kwd><kwd>antitumor immunity</kwd><kwd>regastym gastro</kwd><kwd>atrophic gastritis</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">Miao Q., Qin B., Piao S., Ma C. Global research trends on the association between gastric cancer and chronic atrophic gastritis: a bibliometric analysis. 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