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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">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-HNC-2837</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2837</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>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT COMMUNICATIONS</subject></subj-group></article-categories><title-group><article-title>NK-клетки человека интернализуют рекомбинантный основной стресс-индуцируемый белок HSP70</article-title><trans-title-group xml:lang="en"><trans-title>Human NK cells internalize recombinant major stress protein HSP70</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5278-9937</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шевченко</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shevchenko</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шевченко Мария Александровна – кандидат биологических наук, научный сотрудник</p><p>Москва</p></bio><bio xml:lang="en"><p>Marina A. Shevchenko, PhD (Biology), Research Associate</p><p>Moscow</p></bio><email xlink:type="simple">mshevch@gmail.com</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>Гарбуз</surname><given-names>Д. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Garbuz</surname><given-names>D. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гарбуз Давид Григорьевич – доктор биологических наук, ведущий научный сотрудник</p><p>Москва</p></bio><bio xml:lang="en"><p>David G. Garbuz, PhD, MD (Biology), Leading Research Associate</p><p>Moscow</p></bio><email xlink:type="simple">dgarbuz@yandex.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>Давлетшин</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Davletshin</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Давлетшин Артем Игоревич – младший научный сотрудник</p><p>Москва</p></bio><bio xml:lang="en"><p>Artem I. Davletshin, Junior Research Associate</p><p>Moscow</p></bio><email xlink:type="simple">artem.dav7@yandex.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>Бойко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Boyko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бойко Анна Александровна – кандидат биологических наук, научный сотрудник</p><p>117997, Москва, ул. Миклухо-Маклая, 16/10</p></bio><bio xml:lang="en"><p>Anna A. Boyko, PhD (Biology), Research Associate</p><p>16/10 Miklukho-Maklay St Moscow 117997</p><p> </p></bio><email xlink:type="simple">boyko_anna@mail.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>Евгеньев</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Evgen'ev</surname><given-names>M. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгеньев Михаил Борисович – доктор биологических наук, профессор, главный научный сотрудник</p><p>Москва</p></bio><bio xml:lang="en"><p>Michael B. Evgen’ev, PhD, MD (Biology), Professor, Chief Research Associate</p><p>Moscow</p></bio><email xlink:type="simple">misha672011@yahoo.com</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>Сапожников</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sapozhnikov</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сапожников Александр Михайлович – доктор биологических наук, профессор, главный научный сотрудник</p><p>Москва</p></bio><bio xml:lang="en"><p>Aleksandr M. Sapozhnikov, PhD, MD (Biology), Professor, Chief Research Associate</p><p>Moscow</p></bio><email xlink:type="simple">amsap@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУН «Институт биоорганической химии имени академиков М.М. Шемякина и Ю.А. Овчинникова» Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУН «Институт молекулярной биологии имени В.А. Энгельгардта» Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Engelhardt Institute of Molecular Biology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>01</day><month>06</month><year>2023</year></pub-date><volume>25</volume><issue>3</issue><fpage>447</fpage><lpage>452</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шевченко М.А., Гарбуз Д.Г., Давлетшин А.И., Бойко А.А., Евгеньев М.Б., Сапожников А.М., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Шевченко М.А., Гарбуз Д.Г., Давлетшин А.И., Бойко А.А., Евгеньев М.Б., Сапожников А.М.</copyright-holder><copyright-holder xml:lang="en">Shevchenko M.A., Garbuz D.G., Davletshin A.I., Boyko A.A., Evgen'ev M.B., Sapozhnikov A.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.mimmun.ru/mimmun/article/view/2837">https://www.mimmun.ru/mimmun/article/view/2837</self-uri><abstract><p>Одной из основных функций белков теплового шока семейства 70 кДа (HSP70) является защита внутриклеточных протеинов от повреждающих воздействий стрессирующих факторов различной природы. Наряду с этим HSP7070 играют важную роль в жизнедеятельности клеток и в нормальных физиологических условиях, выполняя вспомогательные, так называемые шаперонные функции. Эти упомянутые функции реализуются во внутриклеточном пространстве; однако в некоторых случаях эти белки также обнаруживаются на клеточной поверхности и во внеклеточной среде. Причины и механизмы такой транслокации на клеточную поверхность и секреции HSP70 во внеклеточное пространство еще недостаточно изучены. Вместе с тем показано, что такая необычная внеклеточная локализация HSP70 активирует клетки иммунной системы. Поверхностные HSP70 и их внеклеточный пул стимулируют цитотоксическую активность, в том числе NK-клеток. Однако прямых экспериментальных доказательств возможности интернализации белков HSP70 NK-клетками еще не было продемонстрировано. В данной работе представлены результаты взаимодействия внеклеточного пула HSP70 с NK-клетками периферической крови здоровых доноров. Результаты исследования подтвердили возможность интернализации экзогенных молекул HSP70 NK-клетками. С этой целью нами были получены флуоресцентно меченые молекулы рекомбинантного стресс-индуцируемого HSP70 человека. О связывании HSP70 с флуорохромом свидетельствовала флуоресценция полученного конъюгата при воздействии освещения с длиной волны 488 нм. Данные электрофореза свидетельствовали об отсутствии деградации белка в процессе мечения, чистоте и стабильности модифицированного белка. Для оценки взаимодействия HSP70 с NK-клетками флуоресцентно меченый HSP70 добавляли к культуре NK-клеток in vitro, выделенных методом магнитной сепарации из мононуклеарной фракции периферической крови, и анализировали с помощью конфокальной микроскопии. Этот анализ показал, что живые NK-клетки интернализуют внеклеточные HSP70, которые локализуются как в лизосомах, так и в фагосомах. Наши эксперименты впервые иллюстрируют процесс проникновения внеклеточных HSP70 в эти клетки. Полученные результаты позволяют предположить, что активация NK-клеток под действием экзогенного HSP70 может быть связана в том числе и с интернализацией этих белков.</p><p> </p></abstract><trans-abstract xml:lang="en"><p>Heat shock proteins 70 kDa (HSP70) protect intracellular proteins from the damaging effects of stress factors of various natures. Moreover, HSP70 play an important role in the vital activity of cells under normal physiological conditions, performing chaperone functions. These functions are realized in the intracellular space; however, in some cases, these proteins are also found on the cell surface and in the extracellular environment. The causes and mechanisms of HSP70 translocation to the cell surface and secretion into the extracellular space have not yet been well understood, but such an unusual localization of HSP70 activates the immune system. The surface HSP70 and their extracellular pool stimulate the cytotoxic activity of NK cells. However, direct experimental evidence for the internalization of HSP70 molecules by NK cells has not yet been demonstrated. This paper presents the results of the interaction of the extracellular HSP70 pool with NK cells from the peripheral blood. The results demonstrated the confirmation of the internalization of exogenous HSP70 molecules by NK cells. To this end, fluorescently labeled recombinant stress-inducible human HSP70 were obtained. The electrophoretic data indicated the absence of protein degradation during the labeling process, the purity and stability of the modified protein. To assess the interaction of HSP70 with NK cells, the fluorescently labeled HSP70 was added to an in vitro culture of NK cells isolated by magnetic separation from the peripheral blood mononuclear fraction and analyzed by confocal microscopy. This analysis indicated that living NK cells internalize extracellular HSP70 with localization both in lysosomes and in phagosomes. Our experiments illustrated for the first time the process of penetration of the extracellular form of HSP70 into these cells. The results suggest that the activation of NK cells under the action of exogenous HSP70 could be associated with the internalization of these protein molecules.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>HSP70 – белок теплового шока 70 кДа</kwd><kwd>NK-клетки</kwd><kwd>интернализация</kwd><kwd>флуоресцентное мечение</kwd><kwd>флуоресцентная визуализация</kwd><kwd>конфокальная микроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>HSP70 – heat shock protein 70 kDa</kwd><kwd>NK cells</kwd><kwd>internalization</kwd><kwd>fluorescent labeling</kwd><kwd>fluorescent imaging</kwd><kwd>laser confocal microscopy</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">The study was funded by Russian Science Foundation, grant numbers 23-15-00472 and 19-14-00167.</funding-statement><funding-statement xml:lang="en">The study was funded by Russian Science Foundation, grant numbers 23-15-00472 and 19-14-00167.</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">Arispe N., Doh M., Simakova O., Kurganov B., de Maio A. 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