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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">10842</article-id><article-id pub-id-type="doi">10.32607/20758251-2019-11-3-20-30</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Research Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">A Novel Sulfonated Derivative of β-Cyclodextrin Effectively Inhibits Influenza A Virus Infection in vitro and in vivo</article-title><trans-title-group xml:lang="ru"><trans-title>Новое бисульфитное производное окисленного β-циклодекстрина эффективно ингибирует инфекцию, вызванную вирусом гриппа А in vitro и in vivo</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Goncharova</surname><given-names>E. P.</given-names></name><name xml:lang="ru"><surname>Гончарова</surname><given-names>Е. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>egn@niboch.nsc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kostyro</surname><given-names>Y. A.</given-names></name><name xml:lang="ru"><surname>Костыро</surname><given-names>Я. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>egn@niboch.nsc.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivanov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Иванов</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>egn@niboch.nsc.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zenkova</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Зенкова</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>egn@niboch.nsc.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт химической биологии и фундаментальной медицины СО РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Иркутский институт химии им. А.Е. Фаворского СО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2019</year></pub-date><volume>11</volume><issue>3</issue><issue-title xml:lang="en">VOL 11, NO3 (2019)</issue-title><issue-title xml:lang="ru">ТОМ 11, №3 (2019)</issue-title><fpage>20</fpage><lpage>30</lpage><history><date date-type="received" iso-8601-date="2020-01-21"><day>21</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Goncharova E.P., Kostyro Y.A., Ivanov A.V., Zenkova M.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Гончарова Е.П., Костыро Я.А., Иванов А.В., Зенкова М.А.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Goncharova E.P., Kostyro Y.A., Ivanov A.V., Zenkova M.A.</copyright-holder><copyright-holder xml:lang="ru">Гончарова Е.П., Костыро Я.А., Иванов А.В., Зенкова М.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://actanaturae.ru/2075-8251/article/view/10842">https://actanaturae.ru/2075-8251/article/view/10842</self-uri><abstract xml:lang="en"><p>The development of novel drugs against the influenza virus with high efficiency and low toxicity is an urgent and important task. Previous reports have demonstrated that compounds based on sulfo derivatives of oligo- and polysaccharides possess high antiviral activity. In this study, we have examined the ability of a novel sulfonated derivative of β-cyclodextrin (KS-6469) to inhibit the influenza virus A/WSN/33 (H1N1) infection in vitro and in vivo. The antiviral potential of KS-6469 against the influenza virus was evaluated in Madin-Darby Canine Kidney epithelial cells treated with serially diluted KS-6469. We found out that KS-6469 completely inhibited viral reproduction after treatment of the infected cells with the compound for 48 h. Our data show that double intranasal treatment of mice with KS-6469 fully protected the animals from a lethal infection and significantly decreased the viral titers in the lungs of the infected animals. Thus, the novel sulfonated β-cyclodextrin derivative KS-6469 is a promising candidate for the development of antiviral drugs for preventing and treating the influenza infection.</p></abstract><trans-abstract xml:lang="ru"><p>Разработка противогриппозных препаратов представляет актуальную и важную задачу. Ранее проведенные исследования показали, что соединения на основе сульфопроизводных олиго- и полисахаридов обладают высокой противовирусной активностью. Нами изучены перспективы использования нового бисульфитного производного окисленного β-циклодекстрина (соединение KS-6469) для подавления репликации вируса гриппа A/WSN/33 (H1N1) in vitro и in vivo. Противовирусный потенциал KS-6469 <italic>in vitro</italic> оценивали в культуре клеток МДСК, инфицированных вирусом. Показано, что инкубация инфицированных клеток в присутствии соединения KS-6469 в течение 48 ч приводит к полному подавлению репродукции вируса. Терапевтическая эффективность KS-6469 проверена на модели гриппозной пневмонии у мышей линии BALB/c. Двукратное интраназальное введение KS-6469 обеспечивало полную защиту животных от заражения вирусом, что сопровождалось значительным снижением титров вируса гриппа в легких инфицированных животных. Таким образом, новое бисульфитное производное β-циклодекстрина KS-6469 обладает выраженной противовирусной активностью и эффективно подавляет развитие гриппозной инфекции.</p></trans-abstract><kwd-group xml:lang="en"><kwd>influenza virus</kwd><kwd>antiviral activity</kwd><kwd>sulfonated derivative of β-cyclodextrin</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>вирус гриппа</kwd><kwd>противовирусная активность</kwd><kwd>сульфированное производное β-циклодекстрина</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This research was supported in part by the Russian state-funded budget project under the Program of Fundamental Research for State Academies of Sciences for 2013-2020 No. AAAA-A17-117020210024-8.</funding-statement><funding-statement xml:lang="ru">Работа выполнена при частичной поддержке проекта базового бюджетного финансирования ПФНИ ГАН 2013-2020 № АААА-А17-117020210024-8.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. 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