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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">microbe</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы особо опасных инфекций</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Particularly Dangerous Infections</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0370-1069</issn><issn pub-type="epub">2658-719X</issn><publisher><publisher-name>Russian Research Anti-Plague Institute “Microbe”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21055/0370-1069-2024-3-111-117</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-2048</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Моноклональные антитела, способные ингибировать взаимодействие рецептор-связующего домена вируса SARS-CoV-2 с ангиотензинпревращающим рецептором 2 клеток человека</article-title><trans-title-group xml:lang="en"><trans-title>Monoclonal Antibodies Capable of Inhibiting the Interaction of the Receptor Binding Domain of SARS-CoV-2 Virus with the Angiotensin-Converting Receptor 2 of Human Cells</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4908-2524</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иващенко</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivashchenko</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иващенко Татьяна Александровна</p><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</p></bio><email xlink:type="simple">ivaschenko_ta@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1698-6516</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романенко</surname><given-names>Я. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Romanenko</surname><given-names>Ya. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</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/0000-0002-3159-6439</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карцева</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kartseva</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</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/0000-0002-5329-2807</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Силкина</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Silkina</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</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/0000-0003-0560-915X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марьин</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mar’in</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</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/0000-0003-0052-2602</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хлынцева</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Khlyntseva</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</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/0000-0002-5388-292X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зенинская</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zeninskaya</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</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/0000-0001-9667-1674</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шемякин</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shemyakin</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</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/0000-0002-9898-9894</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фирстова</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Firstova</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 142279, Московская обл., г.о. Серпухов, п. Оболенск</p></bio><bio xml:lang="en"><p>Obolensk, urban district Serpukhov, Moscow Region, 142279, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФБУН «Государственный научный центр прикладной микробиологии и биотехнологии»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Scientific Center of Applied Microbiology and Biotechnology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>01</day><month>10</month><year>2024</year></pub-date><volume>0</volume><issue>3</issue><fpage>111</fpage><lpage>117</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иващенко Т.А., Романенко Я.О., Карцева А.С., Силкина М.В., Марьин М.А., Хлынцева А.Е., Зенинская Н.А., Шемякин И.Г., Фирстова В.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Иващенко Т.А., Романенко Я.О., Карцева А.С., Силкина М.В., Марьин М.А., Хлынцева А.Е., Зенинская Н.А., Шемякин И.Г., Фирстова В.В.</copyright-holder><copyright-holder xml:lang="en">Ivashchenko T.A., Romanenko Y.O., Kartseva A.S., Silkina M.V., Mar’in M.A., Khlyntseva A.E., Zeninskaya N.A., Shemyakin I.G., Firstova V.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://journal.microbe.ru/jour/article/view/2048">https://journal.microbe.ru/jour/article/view/2048</self-uri><abstract><p>Цель работы – оценить способность моноклональных антител (МКА ) ингибировать взаимодействие рецепторсвязующего домена (RBD) S-белка вируса SARS-CoV-2 вариантов Wuhan-Hu-1 и BQ 1.1 с ангиотензинпревращающим рецептором 2 клеток человека (АСЕ 2). Материалы и методы. В качестве антигенов использованы рекомбинантные RBD вариантов Wuhan-Hu-1 и BQ 1.1. Для наработки мышиных моноклональных антител (мМКА ) гибридомы культивировали in vivo в организме мышей линии BALB/c. Из асцитической жидкости выделяли мМКА очищением сульфатом аммония с последующей очисткой посредством аффинной хроматографии на колонке с сорбентом Protein G Sepharose. Оценку специфической активности мМКА проводили методом иммуноблота с рекомбинантным RBD варианта Wuhan-Hu-1. Для выявления наиболее перспективного мМКА проводили оценку нейтрализующей активности мМКА с помощью метода иммуноферметного анализа посредством иммобилизации RBD на поверхности микропланшета и использования АС E2 в форме конъюгата с пероксидазой хрена. Наработку рекомбинантных антигенов осуществляли в клетках линии ExpiCHO-S (Gibco, США). Результаты и обсуждение. В результате исследования охарактеризованы три мМКА : 5С3, 3F11, 1E6. Все антитела относятся к иммуноглобулинам подкласса G и специфически взаимодействуют с RBD S-белка вируса SARS-CoV-2. Установлено, что наиболее эффективное ингибирование взаимодействия АСЕ 2 и RBD штамма BQ 1.1 наблюдалось у мМКА 3F11 (65 %), а при взаимодействии с RBD штамма Wuhan-Hu-1 – у мМКА 5С3 (91 %). Выявленные характеристики позволяют рассматривать антитела в качестве потенциальных кандидатов для создания терапевтических препаратов на основе антител, что расширяет возможности терапии вирусной инфекции SARS-CoV-2.</p></abstract><trans-abstract xml:lang="en"><p>The aim of the work was to evaluate the ability of monoclonal antibodies to inhibit the interaction of the receptor binding domain (RBD) in S protein of SARS-CoV-2 virus variants, Wuhan-Hu-1 and BQ 1.1, with the angiotensin-converting receptor 2 (ACE2). Materials and methods. In this study, recombinant RBDs of Wuhan-Hu-1 and BQ 1.1 variants were used as antigens. For mouse monoclonal antibody (mMCA) production, hybridomas were cultured in vivo in BALB/c mice. mMCAs were isolated from ascitic fluid by ammonium sulfate treatment followed by purification through column affinity chromatography with Protein G Sepharose sorbent. The specific activity of mMCAs was assessed by immunoblot with recombinant RBD of Wuhan-Hu-1 variant. To identify the most promising mMCA, the neutralizing activity of mMCA was evaluated by enzyme-linked immunosorbent assay (ELISA) via immobilizing RBD on the surface of a microplate and using ACE2 in the form of horseradish peroxidase conjugate. Recombinant antigens were produced in ExpiCHO-S cell line (Gibco, USA). Results and discussion. Three mMCAs have been described as a result of the study: 5C3, 3F11, 1E6. All antibodies belong to immunoglobulins of subclass G and specifically interact with the RBD in S protein of SARS-CoV-2 virus. The most effective inhibition of the interaction between ACE2 and the RBD of BQ 1.1 strain was observed for murine MCA 3F11 (65 %), while the interaction with the RBD of Wuhan-Hu-1 strain was inhibited by mMCA 5C3 (91 %). The identified characteristics allow for considering the antibodies as potential candidates for the development of antibody-based therapeutics, thus expanding the possibilities of therapy for SARS-CoV-2 virus infection.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>SARS-CoV-2</kwd><kwd>COVID-19</kwd><kwd>моноклональные антитела</kwd><kwd>рецептор-связующий домен</kwd><kwd>ангиотен- зинпревращающий фермент 2</kwd><kwd>нейтрализующая активность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>SARS-CoV-2</kwd><kwd>COVID-19</kwd><kwd>monoclonal antibodies</kwd><kwd>receptor-binding domain</kwd><kwd>angiotensin-converting enzyme 2</kwd><kwd>neutralizing activity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания НИОКР 3.1.3.</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of state R&amp;D assignment 3.1.3.</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">Тришкин Д.В., Крюков Е.В., Салухов В.В., Котив Б.Н., Садовников П.С., Андрейчук Ю.В., Чугунов А.А. 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