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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="other" dtd-version="1.2" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Membrane and Cell Biology</journal-id><journal-title-group><journal-title xml:lang="en">Membrane and Cell Biology</journal-title><trans-title-group xml:lang="ru"><trans-title>Биологические мембраны</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0233-4755</issn><issn publication-format="electronic">3034-5219</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">135018</article-id><article-id pub-id-type="doi">10.31857/S0233475523040035</article-id><article-id pub-id-type="edn">OJPGSD</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>СТАТЬИ</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Force Characteristics of <italic>Yersinia pestis</italic> Lipopolysaccharide Interaction with TLR4 and CD14 Receptors on J774 Macrophages. Atomic Force Microscopy</article-title><trans-title-group xml:lang="ru"><trans-title>Силовые характеристики взаимодействия липополисахарида <italic>Yersinia pestis</italic> с рецепторами TLR4 и CD14 макрофагов J774: атомно-силовая микроскопия</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belozerov</surname><given-names>V. S.</given-names></name><name xml:lang="ru"><surname>Белозёров</surname><given-names>В. С.</given-names></name></name-alternatives><email>byvalov@nextmail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Ананченко</surname><given-names>Б. А.</given-names></name><name xml:lang="en"><surname>Ananchenko</surname><given-names>B. A.</given-names></name></name-alternatives><email>byvalov@nextmail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Конышев</surname><given-names>И. В.</given-names></name><name xml:lang="en"><surname>Konyshev</surname><given-names>I. V.</given-names></name></name-alternatives><email>byvalov@nextmail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dudina</surname><given-names>L. G.</given-names></name><name xml:lang="ru"><surname>Дудина</surname><given-names>Л. Г.</given-names></name></name-alternatives><email>byvalov@nextmail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Konnova</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Коннова</surname><given-names>С. А.</given-names></name></name-alternatives><email>byvalov@nextmail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rozhina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Рожина</surname><given-names>Э. В.</given-names></name></name-alternatives><email>byvalov@nextmail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fakhrullin</surname><given-names>R. F.</given-names></name><name xml:lang="ru"><surname>Фахруллин</surname><given-names>Р. Ф.</given-names></name></name-alternatives><email>byvalov@nextmail.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Бывалов</surname><given-names>А. А.</given-names></name><name xml:lang="en"><surname>Byvalov</surname><given-names>A. A.</given-names></name></name-alternatives><email>byvalov@nextmail.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="ru">Вятский государственный университет</institution></aff><aff><institution xml:lang="en">Vyatka State University</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="ru">Институт физиологии Коми научного центра Уральского отделения РАН</institution></aff><aff><institution xml:lang="en">Institute of Physiology, Komi Science Centre, Urals Branch of Russian Academy of Sciences</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Vyatka State University</institution></aff><aff><institution xml:lang="ru">Вятский государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Vyatka State University</institution></aff><aff><institution xml:lang="ru">Вятский государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Institute of Fundamental Medicine and Biology, Kazan (Privolzhsky) Federal University</institution></aff><aff><institution xml:lang="ru">Институт фундаментальной медицины и биологии,
Казанский (Приволжский) федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="ru">Институт физиологии Коми научного центра Уральского отделения РАН</institution></aff><aff><institution xml:lang="en">Institute of Physiology, Komi Science Centre, Urals Branch of Russian Academy of Sciences</institution></aff></aff-alternatives><content-language>ru</content-language><pub-date date-type="pub" iso-8601-date="2023-07-01" publication-format="electronic"><day>01</day><month>07</month><year>2023</year></pub-date><pub-date date-type="collection"><year>2023</year></pub-date><volume>40</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>289</fpage><lpage>297</lpage><history><date date-type="received" iso-8601-date="2023-10-13"><day>13</day><month>10</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="ru">Copyright ©; 2023, Российская академия наук</copyright-statement><copyright-statement xml:lang="en">Copyright ©; 2023, The Russian Academy of Sciences</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><copyright-holder xml:lang="en">The Russian Academy of Sciences</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journals.rcsi.science/0233-4755/article/view/135018">https://journals.rcsi.science/0233-4755/article/view/135018</self-uri><abstract xml:lang="en"><p id="idm45181324428800">One of the main stages of infectious process, which mostly determines the course and outcome of the disease, is the initial contact of the pathogen with the host cells. The lipopolysaccharide as a component of the outer membrane is crucially involved in the interaction between Gram-negative bacteria and immunocompetent host cells. It triggers immune reactions by interaction with specific receptors, mainly CD14 and TLR4. The aim of this work was to quantify the force characteristics of the interaction of <italic>Yersinia pestis</italic> EV lipopolysaccharide with CD14 and TLR4 receptors on the surface of mouse macrophages J774 by atomic force microscopy. Lipopolysaccharide was extracted from <italic>Y. pestis</italic> cells (vaccine strain EV) grown at 27°С. The expression of receptors on the cell surface was evaluated by fluorescent and confocal microscopy. Using monoclonal antibodies against CD14 and TLR4 receptors, force spectroscopy was used to estimate the force characteristics of the interaction between lipopolysaccharide on the cantilever surface and J774 macrophages immobilized on a glass substrate. The conditions for immobilization of J774 macrophages on glass were developed that allowed scanning the cell surface and estimating the adhesion force of target antigens to the cells. Incubation of macrophages in solutions with monoclonal antibodies against CD14 and TLR4 receptors caused a decrease in the major force characteristics of the interaction in the J774 macrophage – <italic>Y. pestis</italic> lipopolysaccharide system compared to the system containing untreated macrophages. A similar effect was observed after pretreatment of the cells with a solution containing the same lipopolysaccharide without monoclonal antibodies. The results show the ability of the <italic>Y. pestis</italic> lipopolysaccharide chemically bound to the cantilever to interact with CD14 and TLR4 receptors on the macrophage surface.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181324427456">Одной из основных стадий инфекционного процесса, которая во многом определяет течение и исход заболевания, является первичный контакт возбудителя с клетками хозяина. Ключевую роль в таком взаимодействии грамотрицательных бактерий с иммунокомпетентными клетками макроорганизма играет липополисахарид наружной мембраны, инициирующий запуск и развитие иммунных реакций путем взаимодействия с рядом специфических рецепторов, в первую очередь СD14 и TLR4. Цель настоящей работы состояла в количественном определении методом атомно-силовой микроскопии силовых характеристик взаимодействия липополисахарида <italic>Yersinia pestis</italic> вакцинного штамма EV с рецепторами CD14 и TLR4 на поверхности мышиных макрофагов J774. Препарат липополисахарида выделяли из клеток <italic>Y. pestis</italic> вакцинного штамма EV, выращенных при 27°С. Для оценки экспрессии рецепторов на поверхности клеток применяли метод флуоресцентной и конфокальной микроскопии. С использованием моноклональных антител к рецепторам CD14 и TLR4 методом силовой спектроскопии оценивали силовые характеристики взаимодействия липополисахарида на поверхности зонда (иглы) кантилевера с клетками макрофагов J774. В работе были подобраны условия иммобилизации на стекле мышиных макрофагов линии J774, позволяющие проводить сканирование их поверхности и оценивать силу адгезии к клеткам целевых антигенов методом атомно-силовой микроскопии. Инкубация иммобилизованных макрофагов в растворах c моноклональными антителами к рецепторам CD14 и TLR4 вызывала снижение основных силовых характеристик взаимодействия в системе макрофаг J774 – липополисахарид <italic>Y. pestis</italic> по сравнению с интактными, необработанными клетками. Аналогичный эффект зарегистрирован после предварительной обработки клеток раствором того же препарата липополисахарида без моноклональных антител. Полученные результаты свидетельствуют о способности липополисахарида, химически связанного с зондом, взаимодействовать с рецепторами CD14 и TLR4 на поверхности макрофагов.</p></trans-abstract><kwd-group xml:lang="en"><kwd><italic>Yersinia pestis</italic></kwd><kwd>lipopolysaccharide</kwd><kwd>receptor</kwd><kwd>CD14</kwd><kwd>TLR4</kwd><kwd>macrophages J774</kwd><kwd>atomic force microscopy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>липополисахарид</kwd><kwd><italic>Yersinia pestis</italic></kwd><kwd>рецепторы CD14 и TLR4</kwd><kwd>макрофаги J774</kwd><kwd>атомно-силовая микроскопия</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Книрель Ю.А., Анисимов А.П. 2012. Липополисахарид чумного микроба Yersinia pestis: cтруктура, генетика, биологические свойства. 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