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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Problems of Virology</journal-id><journal-title-group><journal-title xml:lang="en">Problems of Virology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы вирусологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0507-4088</issn><issn publication-format="electronic">2411-2097</issn><publisher><publisher-name xml:lang="en">Central Research Institute for Epidemiology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">461</article-id><article-id pub-id-type="doi">10.36233/0507-4088-2020-65-6-7</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL RESEARCHES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Phylodynamic characteristics of the Russian population of rotavirus А (Reoviridae: Sedoreovirinae: Rotavirus) based on the VP6 gene</article-title><trans-title-group xml:lang="ru"><trans-title>Филодинамическая характеристика российской популяции ротавируса А (Reoviridae: Sedoreovirinae: Rotavirus) на основе гена VP6</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8058-8187</contrib-id><name-alternatives><name xml:lang="en"><surname>Morozova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Морозова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>researcher of Laboratory of Molecular Epidemiology of Viral Infections</p><p>Nizhny Novgorod, 603950</p></bio><bio xml:lang="ru"><p>научный сотрудник лаборатории молекулярной эпидемиологии вирусных инфекций</p><p>603950, Нижний Новгород</p></bio><email>olga.morozova.bsc@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3203-7863</contrib-id><name-alternatives><name xml:lang="en"><surname>Sashina</surname><given-names>T. F.</given-names></name><name xml:lang="ru"><surname>Сашина</surname><given-names>Т. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>senior Researcher, laboratory of molecular epidemiology of viral infections</p><p>Nizhny Novgorod, 603950</p></bio><bio xml:lang="ru"><p>старший научный сотрудник лаборатории молекулярной эпидемиологии вирусных инфекций</p><p>603950, Нижний Новгород</p></bio><email>tatyana.sashina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3710-6648</contrib-id><name-alternatives><name xml:lang="en"><surname>Novikova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Новикова</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>professor. Head of the laboratory of molecular epidemiology of viral infections</p><p>Nizhny Novgorod, 603950</p></bio><bio xml:lang="ru"><p>старший научный сотрудник лаборатории молекулярной эпидемиологии вирусных инфекций</p><p>603950, Нижний Новгород</p></bio><email>tatyana.sashina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">FSBI «Academician I.N. Blokhina Nizhny Novgorod Scientific Research Institute of Epidemiology and Microbiology» of the Federal Service for Supervision of Consumer Rights Protection and Human Welfare</institution></aff><aff><institution xml:lang="ru">ФБУН «Нижегородский научно-исследовательский институт эпидемиологии и микробиологии им. академика И.Н. Блохиной» Роспотребнадзора</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-12-08" publication-format="electronic"><day>08</day><month>12</month><year>2020</year></pub-date><volume>65</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>364</fpage><lpage>372</lpage><history><date date-type="received" iso-8601-date="2021-01-07"><day>07</day><month>01</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-01-07"><day>07</day><month>01</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Morozova O.V., Sashina T.F., Novikova N.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Морозова О.В., Сашина Т.А., Новикова Н.А.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Morozova O.V., Sashina T.F., Novikova N.A.</copyright-holder><copyright-holder xml:lang="ru">Морозова О.В., Сашина Т.А., Новикова Н.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://virusjour.crie.ru/jour/article/view/461">https://virusjour.crie.ru/jour/article/view/461</self-uri><abstract xml:lang="en"><p><bold>Introduction.</bold> Rotavirus A is one of the leading causes of acute gastroenteritis in children in the first years of life. Rotavirus infection is currently classified as a preventable infection. The most abundant rotavirion protein is VP6.</p><p><bold>Material and methods.</bold> Phylogenetic analysis and calculation of phylodynamic characteristics were carried out for 262 nucleotide sequences of the VP6 gene of rotavirus species A, isolated in Russia, using the BEAST v.1.10.4 software package. The derivation and analysis of amino acid sequences was performed using the MEGAX program.</p><p><bold>Results.</bold> This study provides phylodynamic characteristics of the rotaviruses in Russia based on the sequences coding VP6 protein. Bayesian analysis showed the circulation of rotaviruses of three sublineages of genotype I1 and three sublineages of genotype I2 in Russia. The level of accumulation of mutations was established, which turned out to be similar for genotypes I1 and I2 and amounted to 7.732E-4 and 1.008E-3 nucleotides/site/year, respectively. The effective population sizes based on nucleotide sequences of the VP6 I1 and I2 genotypes are relatively stable while after the 2000s there is a tendency of its decreasing. Comparative analysis of the amino acid sequences in the region of the intracellular neutralization sites A (231–260 aa) and B (265–292 aa) made it possible to reveal a mutation in position V252I in a proportion of Russian strains of genotype I1 some strains of genotypes I1 and I2 had mutation I281V. These substitutions were not associated with any sublineages to which the strains belong. The analysis of three T-cell epitopes revealed four amino acid differences (in aa positions 305, 315, 342, 348) that were associated with the first or second genogroup.</p><p><bold>Conclusion.</bold> Based on the phylodynamic characteristics and amino acid composition of antigenic determinants, it was concluded that the VP6 protein is highly stable and could potentially be a good model for development of a rotavirus vaccine.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Ротавирусы вида А являются одной из лидирующих причин острого гастроэнтерита у детей первых лет жизни. В настоящее время ротавирусная инфекция относится к управляемым инфекционным процессам. Наиболее представленным протеином ротавириона является белок VP6.</p><p><bold>Материал и методы.</bold> В качестве материала для исследования были использованы 262 нуклеотидные последовательности гена VP6 ротавируса вида А, изолированного на территории России. Филогенетический анализ и расчет филодинамических характеристик были осуществлены с использованием пакета про- грамм BEAST v.1.10.4. Выведение и анализ аминокислотных последовательностей проводили в программе MEGAX.</p><p><bold>Результаты.</bold> На территории Российской Федерации показана циркуляция ротавирусов 3 сублиний генотипа I1 и 3 – генотипа I2. Установлен уровень накопления мутаций, который оказался схожим для генотипов I1 и I2 и составил 7,732E-4 и 1,008Е-3 нуклеотидов/сайт/год соответственно. Показано, что эффективные размеры ротавирусной популяции гена VP6 I1 и I2 генотипов стабильны и с начала 2000‑х гг. имеют тенденцию к снижению. Сравнительный анализ аминокислотной последовательности в области сайтов внутриклеточной нейтрализации А (231–260 а.о.) и В (265–292 а.о.) позволил выявить у ряда российских штаммов генотипа I1 мутацию в позиции V252I, а у части из них (I1 и I2 генотипов) – мутацию I281V, не связанные с принадлежностью штаммов к внутритиповым сублиниям. Анализ 3 Т‑клеточных эпитопов выявил 4 ассоциированных с принадлежностью к одной из геногрупп аминокислотных различия (в позициях 305, 315, 342 и 348 а.о.).</p><p><bold>Заключение.</bold> На основе филодинамических характеристик и аминокислотного состава антигенных детерминант сделан вывод о высокой консервативности протеина VP6.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Rotavirus</kwd><kwd>vaccines</kwd><kwd>phylodynamic analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ротавирус</kwd><kwd>вакцинация</kwd><kwd>филодинамический анализ</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. Tate J.E., Burton A.H., Boschi-Pinto C., Steele A.D., Duque J., Parashar U.D. 2008 estimate of worldwide rotavirus-associated mortality in children younger than 5 years before the introduction of universal rotavirus vaccination programmes: a systematic review and meta-analysis. Lancet Infect. 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