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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">biopreparat</journal-id><journal-title-group><journal-title xml:lang="ru">БИОпрепараты. Профилактика, диагностика, лечение</journal-title><trans-title-group xml:lang="en"><trans-title>Biological Products. Prevention, Diagnosis, Treatment</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2221-996X</issn><issn pub-type="epub">2619-1156</issn><publisher><publisher-name>Scientific Centre for Expert Evaluation of Medicinal Products</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30895/2221-996X-2024-24-4-403-414</article-id><article-id custom-type="elpub" pub-id-type="custom">biopreparat-585</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>ТЕМА НОМЕРА: ИННОВАЦИОННЫЕ ИММУНОБИОЛОГИЧЕСКИЕ ПРЕПАРАТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ISSUE TOPIC: INNOVATIVE IMMUNOBIOLOGICALS</subject></subj-group></article-categories><title-group><article-title>Анализ иммуногенной активности композиции инактивированных штаммов ротавируса вида A при иммунизации мышей</article-title><trans-title-group xml:lang="en"><trans-title>Immunogenicity analysis of a composition of inactivated human rotavirus A strains in mice following immunisation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6571-7895</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коврижко</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovrizhko</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коврижко Марина Владимировна</p><p>Газетный пер., д. 119, г. Ростов-на-Дону, 344000</p></bio><bio xml:lang="en"><p>Marina V. Kovrizhko</p><p>119 Gazetny Ln., Rostov-on-Don 344000</p></bio><email xlink:type="simple">npo-kovrizhko@yandex.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/0000-0001-8090-2845</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колпакова</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolpakova</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Колпакова Елена Павловна</p><p>Газетный пер., д. 119, г. Ростов-на-Дону, 344000</p></bio><bio xml:lang="en"><p>Elena P. Kolpakova</p><p>119 Gazetny Ln., Rostov-on-Don 344000</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/0009-0007-7604-4631</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колпаков</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolpakov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Колпаков Дмитрий Сергеевич</p><p>Газетный пер., д. 119, г. Ростов-на-Дону, 344000</p></bio><bio xml:lang="en"><p>Dmitry S. Kolpakov</p><p>119 Gazetny Ln., Rostov-on-Don 344000</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/0000-0002-3912-0291</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Твердохлебова</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tverdokhlebova</surname><given-names>T. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Твердохлебова Татьяна Ивановна, д-р мед. наук, доц.</p><p>Газетный пер., д. 119, г. Ростов-на-Дону, 344000</p></bio><bio xml:lang="en"><p>Tatiana I. Tverdokhlebova, Dr. Sci. (Med.), Assoc. Prof.</p><p>119 Gazetny Ln., Rostov-on-Don 344000</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/0009-0004-2017-2974</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курбатов</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurbatov</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курбатов Егор Сергеевич</p><p>Газетный пер., д. 119, г. Ростов-на-Дону, 344000</p></bio><bio xml:lang="en"><p>Egor S. Kurbatov</p><p>119 Gazetny Ln., Rostov-on-Don 344000</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное бюджетное учреждение науки «Ростовский научно-исследовательский институт микробиологии и паразитологии» Федеральной службы по надзору в сфере защиты прав потребителей и благополучия человека</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Rostov Research Institute of Microbiology and Parasitology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>22</day><month>12</month><year>2024</year></pub-date><volume>24</volume><issue>4</issue><fpage>403</fpage><lpage>414</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Коврижко М.В., Колпакова Е.П., Колпаков Д.С., Твердохлебова Т.И., Курбатов Е.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Коврижко М.В., Колпакова Е.П., Колпаков Д.С., Твердохлебова Т.И., Курбатов Е.С.</copyright-holder><copyright-holder xml:lang="en">Kovrizhko M.V., Kolpakova E.P., Kolpakov D.S., Tverdokhlebova T.I., Kurbatov E.S.</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.biopreparations.ru/jour/article/view/585">https://www.biopreparations.ru/jour/article/view/585</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ. Для профилактики ротавирусной инфекции применяются живые аттенуированные вакцины. Однако, учитывая мировую и российскую практику вакцинации, а также особенности физиологии детского организма, актуальным представляется создание инактивированных ротавирусных вакцин. Необходимым условием при разработке таких вакцин является наличие стабильно реплицирующихся штаммов вируса и подбор оптимального режима инактивации для проявления необходимого уровня антигенной активности и иммуногенности.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ. Оценка и сравнительная характеристика специфического противоротавирусного иммунного ответа на введение неинактивированных (нативных) штаммов и композиции инактивированных штаммов ротавируса вида А на модели мышей.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. В работе использовали штаммы ротавируса человека вида А (RRV-4, RRV-5, RRV-6, RRV-7), стандартизированный штамм SA-11 № 2364 ГКВ, клеточные культуры линий Vero и СПЭВ. Инфекционную активность штаммов, выращенных на перевиваемых клетках линии Vero, определяли методом титрования вируса. Учет зараженных клеточных культур вели до наступления цитопатического действия и рассчитывали показатель ТЦД50 (50% тканевая цитопатическая доза) по методу Кербера в модификации Ашмарина и выражали его в lg ТЦД50/мл. Для инактивации штаммов вируса использовали формальдегид. Для оценки иммуногенной активности проводили иммунизацию нелинейных белых мышей с использованием нативных штаммов и композиции инактивированных штаммов (RRV-4, RRV-5, RRV-6, RRV-7). После иммунизации у животных отбирали кровь и в образцах сыворотки определяли титр антител к ротавирусу вида А с помощью метода гетерогенного непрямого иммуноферментного анализа.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Штаммы ротавируса, адаптированные к росту на клеточной культуре линии Vero, проявляли инфекционную активность с уровнем титров от 8,9 до 7,9 lg ТЦД50/мл.</p><p>Показано, что инактивация штаммов наступала при температуре 37 °С и концентрации формальдегида от 0,05 до 0,025% в зависимости от длительности обработки. При оценке антигенной активности выявлено, что титр антигена в композиции инактивированных штаммов (1:16) был ниже, чем в случае нативных штаммов (1:32–1:64). Показано, что нативные штаммы и композиция инактивированных штаммов при иммунизации мышей обладали сравнимой специфической иммуногенной активностью.</p></sec><sec><title>ВЫВОДЫ</title><p>ВЫВОДЫ. Получены штаммы-кандидаты ротавируса вида A, стабильно реплицирующиеся на перевиваемых клетках линии Vero. Подобраны оптимальные условия инактивации штаммов и разработана композиция инактивированных штаммов, обладающая специфической антигенной активностью и иммуногенностью. Представленные данные позволяют рассматривать полученную композицию инактивированных штаммов ротавируса вида A как основу для дальнейшей разработки инактивированной ротавирусной вакцины.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION. Currently, rotavirus infection is prevented with live attenuated vaccines. However, international and Russian vaccination practices, as well as the physiological characteristics of paediatric patients, necessitate the development of inactivated rotavirus vaccines. Prerequisites for the development of such vaccines are the availability of virus strains capable of stable replication and the selection of optimal inactivation conditions providing for the required antigenicity and immunogenicity levels.</p></sec><sec><title>AIM</title><p>AIM. This study aimed to evaluate and compare the characteristics of the rotavirus-specific immune response to native strains and to a composition of inactivated rotavirus A strains in a mouse model.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS. The study used human rotavirus A strains (RRV-4, RRV-5, RRV-6, and RRV-7), a standard rotavirus strain (SA-11 NVC 2364, National Virus Collection of the Russian Federation), and cultures of pig embryo kidney cells treated with Versene solution (SPEV) and Vero cells. Virus titration was used to determine the infectivity of the strains grown in Vero cells maintained in continuous culture. The authors monitored infected cell cultures up to the onset of the cytopathic effect, calculated the 50% tissue culture infectious dose (TCID50) by the Kärber method modified by Ashmarin, and expressed the results as log10 TCID50/mL. Virus strains were inactivated with formaldehyde. To evaluate immuno­genicity, outbred white mice were immunised with native strains and the composition of inactivated strains (RRV-4, RRV-5, RRV-6, and RRV-7). After immunisation, blood was taken from the animals, and the serum titre of rotavirus A antibodies was determined by indirect heterogeneous enzyme immunoassay.</p></sec><sec><title>RESULTS</title><p>RESULTS. The infectivity of the rotavirus strains adapted to Vero cells ranged from 8.9 to 7.9 log10 TCID50/mL. When selecting inactivation conditions, the authors showed that inactiva­tion occurred at a temperature of 37 °C and a formaldehyde concentration of 0.05–0.025% (depending on the duration of treatment). The antigenicity analysis demonstrated that the antigen titre of the inactivated strain composition (1:16) was lower than that of native strains (1:32–1:64). The authors demonstrated comparability of immunogenicity profiles of the inacti­vated strain composition and native strains in mice.</p></sec><sec><title>CONCLUSIONS</title><p>CONCLUSIONS. The study generated candidate rotavirus A strains that exhibited stable replica­tion in continuous cultures of Vero cells. The authors selected optimal inactivation conditions for these rotavirus strains and developed an inactivated strain composition showing antigenicity and immunogenicity. The presented data suggest that the composition of inactivated rotavirus A strains can be considered as a basis for further development of an inactivated rotavirus vaccine.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>ротавирус вида A</kwd><kwd>ротавирусная инфекция</kwd><kwd>вакцинация</kwd><kwd>инактивированные ротавирусные вакцины</kwd><kwd>композиция инактивированных штаммов</kwd><kwd>иммуногенная активность</kwd><kwd>инфекционная активность</kwd><kwd>антигенная активность</kwd><kwd>антитела к ротавирусу вида А</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rotavirus A</kwd><kwd>rotavirus infection</kwd><kwd>vaccination</kwd><kwd>inactivated rotavirus vaccines</kwd><kwd>composition of inactivated strains</kwd><kwd>immunogenicity</kwd><kwd>infectivity</kwd><kwd>antigenicity</kwd><kwd>anti-rotavirus A antibodies</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках НИР № 121032300240-8</funding-statement><funding-statement xml:lang="en">This study was conducted as part of R&amp;D project No. 121032300240-8</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">Бондарев ВП, Шевцов ВА, Индикова ИН, Евреинова ЕЭ, Горенков ДВ. 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