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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">vavilov</journal-id><journal-title-group><journal-title xml:lang="ru">Вавиловский журнал генетики и селекции</journal-title><trans-title-group xml:lang="en"><trans-title>Vavilov Journal of Genetics and Breeding</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-3259</issn><publisher><publisher-name>Institute of Cytology and Genetics of Siberian Branch of the RAS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/VJ19.508</article-id><article-id custom-type="elpub" pub-id-type="custom">vavilov-2130</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>МОЛЕКУЛЯРНАЯ И КЛЕТОЧНАЯ БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MOLECULAR AND CELL BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Изучение иммуногенности рекомбинантного фрагмента ортопоксвирусного белка p35</article-title><trans-title-group xml:lang="en"><trans-title>Immunogenicity of recombinant fragment of orthopoxvirus p35 protein in mice</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1413-5876</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хлусевич</surname><given-names>Я. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khlusevich</surname><given-names>Ya. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6884-6104</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Матвеев</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Matveev</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гончарова</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Goncharova</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Байков</surname><given-names>И. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Baykov</surname><given-names>I. K.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1687-8278</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тикунова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tikunova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">tikunova@niboch.nsc.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт химической биологии и фундаментальной медицины Сибирского отделения Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Institute of Сhemical Biology аnd Fundamental Medicine, SB RAS<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Институт химической биологии и фундаментальной медицины Сибирского отделения Российской академии наук; &#13;
Новосибирский национальный исследовательский государственный университет<country>Россия</country></aff><aff xml:lang="en">Institute of Сhemical Biology аnd Fundamental Medicine, SB RAS; &#13;
Novosibirsk State University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>06</day><month>07</month><year>2019</year></pub-date><volume>23</volume><issue>4</issue><fpage>398</fpage><lpage>404</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хлусевич Я.А., Матвеев А.Л., Гончарова Е.П., Байков И.К., Тикунова Н.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Хлусевич Я.А., Матвеев А.Л., Гончарова Е.П., Байков И.К., Тикунова Н.В.</copyright-holder><copyright-holder xml:lang="en">Khlusevich Y.A., Matveev A.L., Goncharova E.P., Baykov I.K., Tikunova N.V.</copyright-holder><license 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://vavilov.elpub.ru/jour/article/view/2130">https://vavilov.elpub.ru/jour/article/view/2130</self-uri><abstract><p>Несмотря на ликвидацию натуральной оспы, ортопоксвирусы продолжают оставаться источником биологической опасности для людей, так как в природе циркулируют вирусы оспы коров и оспы обезьян, причем последний способен вызывать не только спорадические случаи заболеваний человека, но и вспышки оспоподобной инфекции. Кроме того, периодическая вакцинация необходима для представителей определенных профессий (ученые, изучающие патогенные ортопоксвирусы, медицинские работники и др.). Оспопрививание – вакцинация живым вирусом осповакцины, которое широко использовалось при ликвидации натуральной оспы, обеспечивает формирование у вакцинированных людей длительного иммунитета. Однако, давая достаточно надежную защиту, оспопрививание нередко сопровождается серьезными поствакцинальными осложнениями, вероятность возникновения которых особенно велика для лиц со сниженным иммунным статусом. В связи с этим разработка препаратов для профилактики и лечения инфекций, вызванных ортопоксвирусами, актуальна и в настоящее время. Цель данного исследования – оценка иммуногенности в мышиной модели рекомбинантного белка р35Δ12, сконструированного на основе белка р35 вируса оспы коров. Ранее было показано, что белок р35Δ12 связывается с высоким сродством с полноразмерным вируснейтрализующим анти-ортопоксвирусным антителом человека. В настоящей работе рекомбинантный белок р35Δ12, наработанный в клетках E. coli XL1-blue и очищенный хроматографически, использовали для двукратной иммунизации мышей. Через две недели после второй иммунизации у мышей брали образцы крови и анализировали находящиеся в сыворотке антитела. Методами иммуноферментного и вестерн-блот анализа было показано, что сыворотки иммунизированных животных содержали антитела класса IgG, направленные к рекомбинантному белку р35Δ12. Методом конфокальной микроскопии показано, что антитела, индуцированные белком р35Δ12, способны узнавать клетки Vero E6, зараженные вирусом осповакцины ЛИВП-GFP. Кроме того, находящиеся в сыворотках иммунизированных мышей антитела могут нейтрализовать инфекционность вируса осповакцины ЛИВП-GFP в реакции ингибирования бляшкообразования in vitro.</p></abstract><trans-abstract xml:lang="en"><p>Despite the elimination of smallpox, orthopoxviruses continue to be a source of biological danger for humans, as cowpox and monkey pox viruses circulate in nature and the last virus can cause both sporadic cases of human diseases and outbreaks of smallpox-like infection. In addition, periodic vaccination is necessary for representatives of some professions (scientists studying pathogenic orthopoxviruses, medical personnel, etc.). Vaccination against smallpox virus with live vaccinia virus, which was widely used during the elimination of smallpox, induces the formation of long-term immunity in vaccinated people. However, providing a high level of protection, the vaccination is often accompanied by serious post-vaccination complications, the probability of which is particularly great for individuals with compromised immunity. In this regard, the development of preparations for the prevention and treatment of infections caused by orthopoxviruses remains important today. The aim of this study was to assess the immunogenicity in the mouse model of recombinant protein р35Δ12, designed previously on the base of the cowpox virus protein p35. It was previously shown that the protein р35Δ12 was recognized by fully human neutralizing anti-orthopoxviral antibody with high affinity. In this work, recombinant protein р35Δ12 produced in E. coli cells XL1-blue and purified by chromatography was used for two-time immunization of mice. Two weeks after the second immunization, blood samples were taken from mice and serum antibodies were analyzed. It was shown by ELISA and Western-blot analysis that immunized mice sera contained IgG antibodies specific to recombinant protein р35Δ12. Confocal microscopy showed that antibodies induced by the р35Δ12 protein were able to recognize Vero E6 cells infected with the LIVP-GFP vaccinia virus. In addition, the antibodies in the serum of immunized mice were able to neutralize the infectivity of the vaccinia virus LIVP-GFP in the plaque reduction neutralization test in vitro. These experiments have demonstrated promising properties of the р35Δ12 protein if it were used as a component of vaccine for prophylaxis of orthopoxvirus infections.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>белок p35 ортопоксвирусов</kwd><kwd>вирус оспы коров</kwd><kwd>рекомбинантный белок</kwd><kwd>иммунизация</kwd><kwd>конфокальная микроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>p35 orthopoxvirus protein</kwd><kwd>cowpox virus</kwd><kwd>recombinant protein</kwd><kwd>immunization</kwd><kwd>confocal microscopy</kwd></kwd-group><funding-group xml:lang="en"><funding-statement>This work was supported by the Russian Science Foundation, project 16-14-00083.</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">Дубровская В.В., Улитин А.Б., Ламан А.Г., Гилева И.П., Бормотов Н.И., Ильичев А.А., Бровко Ф.А., Щелкунов С.Н., Беланов Е.Ф., Тикунова Н.В. 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