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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">microbe</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы особо опасных инфекций</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Particularly Dangerous Infections</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0370-1069</issn><issn pub-type="epub">2658-719X</issn><publisher><publisher-name>Russian Research Anti-Plague Institute “Microbe”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21055/0370-1069-2020-1-115-123</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-1288</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>Филогенетическое положение и особенности структуры геномов ctxAB– tcpA+ Vibrio cholerae из поверхностных водоемов на неэндемичной по холере территории</article-title><trans-title-group xml:lang="en"><trans-title>Phylogenetic Affinity and Genome Structure Features of ctxAB– tcpA+ Vibrio cholerae from the Surface Waterbodies in the Territory that is Non-Endemic as Regards Cholera</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>Миронова</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mironova</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Миронова Лилия Валерьевна</p></bio><bio xml:lang="en"><p>Lilia V. Mironova</p></bio><email xlink:type="simple">mironova-lv@yandex.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>Бочалгин</surname><given-names>Н. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Bochalgin</surname><given-names>N. O.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гладких</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Gladkikh</surname><given-names>A. S.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Феранчук</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Feranchuk</surname><given-names>S. I.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пономарева</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponomareva</surname><given-names>A. S.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балахонов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Balakhonov</surname><given-names>S. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФКУЗ «Иркутский научно-исследовательский противочумный институт Сибири и Дальнего Востока»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk Research Anti-Plague Institute of Siberia and Far East</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>21</day><month>04</month><year>2020</year></pub-date><volume>0</volume><issue>1</issue><fpage>115</fpage><lpage>123</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Миронова Л.В., Бочалгин Н.О., Гладких А.С., Феранчук С.И., Пономарева А.С., Балахонов С.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Миронова Л.В., Бочалгин Н.О., Гладких А.С., Феранчук С.И., Пономарева А.С., Балахонов С.В.</copyright-holder><copyright-holder xml:lang="en">Mironova L.V., Bochalgin N.O., Gladkikh A.S., Feranchuk S.I., Ponomareva A.S., Balakhonov S.V.</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://journal.microbe.ru/jour/article/view/1288">https://journal.microbe.ru/jour/article/view/1288</self-uri><abstract><p>Цель – анализ происхождения ctxAB– tcpA+ Vibrio cholerae О1 El Tor из поверхностных водоемов на неэндемичной по холере территории, а также их филогенетического родства с различными по эпидемической значимости группами штаммов на основе исследования структуры генов жизнеобеспечения и полных геномов. Материалы и методы. В исследование включено 25 штаммов V. cholerae, выделенных в Сибири и на Дальнем Востоке, в том числе два ctxAB– tcpA+ штамма из поверхностных водоемов (Алтайский край, 2011 г.; Хабаровский край, 2013 г.). Для филогенетического анализа использованы геномы 36 штаммов V. cholerae из GenBank. MLST проводилось по генам dnaE, cat, lap, pgm, recA, gyrB, chi, MLST in silico – по генам adk, gyrB, metE, mdh, pntA, purM, pyrC. Реконструкция филогении осуществлялась на основании анализа SNP в геномах V. cholerae с использованием программы PhyML 3.0. Результаты и обсуждение. При MLST ctxAB– tcpA+ V. cholerae О1 El Tor из поверхностных водоемов формируют самостоятельный генотип в группе токсигенных штаммов и спонтанных мутантов токсигенных штаммов. В in silico MLST ctxAB– tcpA+ изоляты демонстрируют принадлежность к SТ75, характерному для US Gulf филогенетической линии. При SNP-типировании штаммы ctxAB– tcpA+ из поверхностных водоемов вошли в группу, основание которой представлено US Gulf V. cholerae, а изолят из Хабаровска (2013 г.) демонстрирует высокий уровень гомологии генома с US Gulf-подобным штаммом, выделенным в Китае (2009 г.). Установлена идентичность организации острова патогенности VPI-1 у штаммов из Хабаровска и Китая, а также наличие у них острова пандемичности VSP-I. Результаты свидетельствуют о принадлежности ctxAB– tcpA+ V. cholerae из поверхностных водоемов Сибири и Дальнего Востока к US Gulf филогенетической линии и, в совокупности с данными эпидемиологического анализа, позволяют судить об их завозном происхождении.</p></abstract><trans-abstract xml:lang="en"><p>Objective is analyzing the origin of the ctxAB– tcpA+ Vibrio cholerae О1 El Tor strains isolated from the surface water bodies in the territory that is non-endemic of cholera; as well as investigating their phylogenetic relations to varying by epidemic significance groups of strains, based on the structure of housekeeping genes and whole genome structure. Materials and methods: we examined 25 V. cholerae strains, isolated in Siberia and Far East, including two ctxAB– tcpA+ strains from surface water sources (Altai Territory, 2011; Khabarovsk Territory, 2013). Phylogenetic analysis included genomes of 36 V. cholerae strains from GenBank. Multilocus sequence typing (MLST) was carried out based on dnaE, cat, lap, pgm, recA, gyrB, and chi genes; in silico MLST – adk, gyrB, metE, mdh, pntA, purM and pyrC genes. Reconstruction of phylogeny was performed based on the comparative analysis of core genome SNPs in PhyML 3.0. Results and discussion. MLST of ctxAB– tcpA+ V. cholerae О1 El Tor strains from the surface water bodies revealed that such strains form an individual genotype in the cluster of toxigenic strains and spontaneous mutants of toxigenic strains. According to results of in silico MLST, ctxAB– tcpA+ isolates belong to SТ75, common to US Gulf phylogenetic line. Based on SNP-typing, ctxAB– tcpA+ strains from the surface water sources were assigned to the group, originating from US Gulf V. cholerae, moreover isolate from Khabarovsk (2013) demonstrated high degree of genome homology with US Gulf-like strain from China (2009). For strains from Khabarovsk and China, we also showed the compositional identity of the pathogenicity island VPI-I and the presence of pandemicity island, VSP-1. The results testify to the fact that ctxAB– tcpA+ V. cholerae strains, isolated in Siberia and Far East, originate from the US Gulf phylogenetic line. Furthermore, taking into account the results of epidemiological analysis, we can deduce that these strains are imported ones.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Vibrio cholerae</kwd><kwd>мультилокусное сиквенс-типирование</kwd><kwd>полногеномное секвенирование</kwd><kwd>филогенетический анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Vibrio cholerae</kwd><kwd>multilocus sequence typing</kwd><kwd>whole genome sequencing</kwd><kwd>phylogenetic analysis</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">Бельский В.А., Калуцкий П.В., Киселева В.В., Шаталова Е.В., Закарян Л.М. Гетерогенность микробных популяций. М: ООО «Медицинское информационное агентство»; 2008. 160 с.</mixed-citation><mixed-citation xml:lang="en">Bel’sky V.A., Kalutsky P.V., Kiseleva V.V., Shatalova E.V., Zakaryan L.M. [Heterogeneity of microbial populations]. 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