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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-DVC-2901</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-2901</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>Субъединичная вакцина “Дельта-Вак” индуцирует сильный гуморальный иммунный ответ против SARS-CoV-2</article-title><trans-title-group xml:lang="en"><trans-title>Delta-Vac’ subunit vaccine induces strong humoral immune response against SARS-CoV-2</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>Несмеянова</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nesmeyanova</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Несмеянова В.С. – младший научный сотрудник отдела биоинженерии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Nesmeyanova V.S., Junior Researcher, Bioengineering Department </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><email xlink:type="simple">nesmeyanova_vs@vector.nsc.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>Меркульева</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Merkulyeva</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Меркульева Ю.А. – к.б.н., младший научный сотрудник отдела биоинженерии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Merkulyeva Yu.A., PhD (Biology), Junior Researcher, Bioengineering Department </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Исаева</surname><given-names>А. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Isaeva</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Исаева А.A. – к.х.н., младший научный сотрудник отдела биоинженерии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Isaeva A.A., PhD (Chemistry), Junior Researcher, Bioengineering Department </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волкова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Волкова Н.В. – к.б.н., научный сотрудник отдела биоинженерии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Volkova N.V., PhD (Biology), Researcher, Bioengineering Department </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Беленькая</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belenkaya</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Беленькая С.В. – к.б.н., научный сотрудник отдела биоинженерии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Belenkaya S.V., PhD (Biology), Researcher, Bioengineering Department </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боргоякова</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Borgoyakova</surname><given-names>M. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Боргоякова М.Б. – младший научный сотрудник отдела биоинженерии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Borgoyakova M.B., Junior Researcher, Bioengineering Department </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волосникова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Volosnikova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Волосникова Е.А. – к.б.н., ведущий научный сотрудник отдела разработки технологий и пилотного производства биопрепаратов, заведующая лабораторией получения и анализа биосубстанций </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Volosnikova E.A., PhD (Biology), Leading Researcher of the Department of Technology Development and Pilot Production of Biologicals, Head of the Laboratory of Obtaining and Analizing Biosubstances </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Есина</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Esina</surname><given-names>T. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Есина Т.И. – младший научный сотрудник отдела разработки технологий и пилотного производства биопрепаратов </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Esina T.I., Junior Researcher, Department of Technology Development and Pilot Production of Biologicals </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Даниленко</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Danilenko</surname><given-names>E. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Даниленко Е.Д. – к.б.н., врио директора Института медицинской биотехнологии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Danilenko E.D., PhD (Biology), Acting Director, Institute of Medical Biotechnology </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайковская</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaikovskaya</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зайковская А.В. – к.б.н., старший научный сотрудник отдела «Коллекция микроорганизмов» </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Zaikovskaya A.V., PhD (Biology), Senior Researcher, Department “Collection of Microorganisms” </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Олькин</surname><given-names>С. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Olkin</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Олькин С.Е. – ведущий научный сотрудник отдела биофизики и экологических исследований </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Olkin S.E., Leading Researcher, Department of Biophysics and Ecological Research </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пьянков</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pyankov</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пьянков О.В. – к.б.н., заведующий отделом «Коллекция микроорганизмов» </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Pyankov O.V., PhD (Biology), Head, Department “Collection of Microorganisms” </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ильичев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilichev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильичев А.А. – д.б.н., профессор, заведующий отделом биоинженерии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Ilichev A.A., PhD, MD (Biology), Professor, Head, Bioengineering Department </p><p>Koltsovo, Novosibirsk Region 630559</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щербаков</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shcherbakov</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щербаков Д.Н. – к.б.н., ведущий научный сотрудник отдела биоинженерии, заведующий лабораторией иммунохимии </p><p>630559, Новосибирская обл., р. п. Кольцово</p></bio><bio xml:lang="en"><p>Shcherbakov D.N., PhD (Biology), Leading Researcher of the Bioengineering Department, Head of the Laboratory of Immunochemistry </p><p>Koltsovo, Novosibirsk Region 630559</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 вирусологии и биотехнологии “Вектор”» Роспотребнадзора</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Research Center of Virology and Biotechnology “Vector”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>15</day><month>10</month><year>2025</year></pub-date><volume>27</volume><issue>5</issue><fpage>1077</fpage><lpage>1086</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Несмеянова В.С., Меркульева Ю.А., Исаева А.A., Волкова Н.В., Беленькая С.В., Боргоякова М.Б., Волосникова Е.А., Есина Т.И., Даниленко Е.Д., Зайковская А.В., Олькин С.Е., Пьянков О.В., Ильичев А.А., Щербаков Д.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Несмеянова В.С., Меркульева Ю.А., Исаева А.A., Волкова Н.В., Беленькая С.В., Боргоякова М.Б., Волосникова Е.А., Есина Т.И., Даниленко Е.Д., Зайковская А.В., Олькин С.Е., Пьянков О.В., Ильичев А.А., Щербаков Д.Н.</copyright-holder><copyright-holder xml:lang="en">Nesmeyanova V.S., Merkulyeva Y.A., Isaeva A.A., Volkova N.V., Belenkaya S.V., Borgoyakova M.B., Volosnikova E.A., Esina T.I., Danilenko E.D., Zaikovskaya A.V., Olkin S.E., Pyankov O.V., Ilichev A.A., Shcherbakov D.N.</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/2901">https://www.mimmun.ru/mimmun/article/view/2901</self-uri><abstract><p>Пандемия COVID-19 сконцентрировала внимание исследователей всего мира на борьбе с этой инфекцией. Важнейшим подходом противодействия COVID-19 стала разработка профилактических вакцин на основе ряда платформ, включая ДНК- и РНК-вакцины, векторные и субъединичные вакцины. Одной из таких платформ стали субъединичные вакцины, которые привлекательны в первую очередь из-за непревзойденного профиля их безопасности. Однако безопасность данных вакцин часто сопряжена с невысокой эффективностью, поэтому зачастую необходимо применять адъюванты, а также использовать более сложные схемы иммунизации. В то же время важным достоинством субъединичных вакцин является масштабируемость и относительная простота производства, так как в процессе производства нет необходимости работать с живым вирусом или вирусными векторами. Целью работы была разработка кандидатной вакцины на основе рекомбинантного рецептор-связывающего домена (RBD) спайкового S-белка SARS-CoV-2 варианта Delta (B.1.617.2). В исследовании применялись иммунологические методы, методы генной инженерии и биотехнологии. В ходе работы на основе клеток млекопитающих CHO-K1 разработан продуцент рекомбинантного RBD. Для получения белка, отвечающего требованиям инъекционных препаратов, была разработана схема хроматографической очистки, включающая аффинную и ионообменную хроматографии. Предложен вариант субъединичной вакцины «Дельта-Вак» на основе полученного рекомбинантного белка. Иммуногенность кандидатной вакцины «Дельта-Вак» оценивали на модели лабораторных мышей BALB/c. Проводили двукратную иммунизацию животных дозой 50 мкг RBD в комплексе с Al(OH)3 с двухнедельным интервалом. Показана способность кандидатной вакцины индуцировать выработку специфических IgG и нейтрализующих антител у мышей линии BALB/c. Специфические титры антител иммунизированных животных лежали в диапазоне от 1/105 до 1/106 . При этом сыворотки крови обладали нейтрализующей активностью в отношении SARS-CoV-2 (вариант B.1.617.2 (Delta)) с титром до 1/2000. Разработанная вакцина «Дельта-Вак» обладает высокой иммуногенностью и индуцирует выработку нейтрализующих антител против гомологичного варианта Delta и гетерологичных вариантов Wuhan и Omicron SARS-CoV-2. Таким образом, «Дельта-Вак» может выступать в качестве кандидатной вакцины и служить прототипом для разработки субъединичных вакцин против COVID-19.</p></abstract><trans-abstract xml:lang="en"><p>The COVID-19 pandemic has focused the worldwide attention on the fight against this infection. Development of preventive vaccines based on different platforms, including DNA and RNA vaccines, genetic vectors and subunit vaccines A has been the key approach to combating COVID-19. The subunit vaccines were among these platforms, primarily, due to their unique safety profile. However, the safety of these vaccines is often associated with low efficiency. Hence, their application often requires usage of immune adjuvants, along with more complex immunization regimens. Meanwhile, an important advantage of subunit vaccines is their scalability and relative ease of production, since there is no need to work with live virus or viral vectors during the production process. The purpose of our work was to develop a candidate vaccine based on the recombinant receptor-binding domain (RBD) of the SARS-CoV-2 spike S-protein from the Delta variant (B.1.617.2). The study used immunological techniques employing methods of genetic engineering and biotechnology. In the course of this work, we have developed a producer of recombinant RBD based on the CHO-K1 mammalian cells. To obtain a protein meeting the requirements of injectable drugs, a chromatographic purification scheme was developed, including affinity and ion exchange chromatography. We have proposed a variant of the subunit vaccine “Delta-Vac” developed on this recombinant protein. Immunogenicity of “Delta-Vac” vaccine was tested in the BALB/c mice. The animals were immunized twice at a dose of 50 μg of RBD combined with Al(OH)3, at a two-week interval. The ability of the candidate vaccine was assessed by induced production of specific IgG and neutralizing antibodies in BALB/c mice. Specific antibody titers of immunized animals ranged from 1/105 to 1/106 . Moreover, the blood sera showed neutralizing activity against SARS-CoV-2 (variant Delta, B.1.617.2) at a titer of up to 1/2000. The developed vaccine “Delta-Vac” is highly immunogenic and induces production of neutralizing antibodies against homologous Delta variant as well as heterologous Wuhan and Omicron SARS-CoV-2 variants. Hence, “Delta-Vac” may act as a vaccine candidate and serve as a prototype for the development of subunit vaccines against COVID-19.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>субъединичные вакцины</kwd><kwd>SARS-CoV-2</kwd><kwd>RBD</kwd><kwd>S-белок</kwd><kwd>иммуногенность</kwd><kwd>нейтрализующие антитела</kwd></kwd-group><kwd-group xml:lang="en"><kwd>subunit vaccines</kwd><kwd>SARS-CoV-2</kwd><kwd>RBD</kwd><kwd>S-protein</kwd><kwd>immunogenicity</kwd><kwd>neutralizing antibodies</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">Матвеев А.Л., Хлусевич Я.А., Байков И.К., Бабкин И.В., Гончарова Е.П., Морозова В.В., Тикунова Н.В. 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