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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">jofin</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал инфектологии</journal-title><trans-title-group xml:lang="en"><trans-title>Journal Infectology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-6732</issn><publisher><publisher-name>IPO “АIDSSPbR"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22625/2072-6732-2020-12-1-48-55</article-id><article-id custom-type="elpub" pub-id-type="custom">jofin-1012</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 исследования</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Original Research</subject></subj-group></article-categories><title-group><article-title>Молекулярно-генетическая характеристика патогенности вируса клещевого энцефалита дальневосточного субтипа</article-title><trans-title-group xml:lang="en"><trans-title>Molecular-genetic characteristics of the tick-borne encephalitis virus pathogenicity of far eastern subtype</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>Леонова</surname><given-names>Г. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Leonova</surname><given-names>G. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Леонова Галина Николаевна  – главный научный сотрудник лаборатории природно-очаговых трансмиссивных инфекций, д.м.н., профессор.</p><p>Владивосток, тeл.: +7-966-280-28-45</p></bio><bio xml:lang="en"><p>Vladivostok</p></bio><email xlink:type="simple">galinaleon41@gmail.com</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>Сомова</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Somova</surname><given-names>L. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сомова Лариса Михайловна – д.м.н, профессор, главный научный сотрудник лаборатории молекулярной микробиологии, д.м.н., профессор.</p><p>Владивосток, тел.: +7-914-791-22-18</p></bio><bio xml:lang="en"><p>Vladivostok</p></bio><email xlink:type="simple">l_somova@mail.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>Беликов</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Belikov</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Беликов Сергей Иванович – главный научный сотрудник лаборатории аналитической и биоорганической химии, д.б.н., профессор.</p><p>Иркутск, тел.:  +7-914-891-99-98 </p></bio><bio xml:lang="en"><p>Irkutsk</p></bio><email xlink:type="simple">sergeibelikov47@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт эпидемиологии и микробиологии имени Г.П. Сомова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Science Research Institute of Epidemiology and Microbiology named after G.P. Somov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Лимнологический институт</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Limnological Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>19</day><month>03</month><year>2020</year></pub-date><volume>12</volume><issue>1</issue><fpage>48</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Леонова Г.Н., Сомова Л.М., Беликов С.И., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Леонова Г.Н., Сомова Л.М., Беликов С.И.</copyright-holder><copyright-holder xml:lang="en">Leonova G.N., Somova L.M., Belikov S.I.</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.niidi.ru/jofin/article/view/1012">https://journal.niidi.ru/jofin/article/view/1012</self-uri><abstract><p>Цель работы: используя данные полногеномного секвенирования штаммов дальневосточной популяции вируса клещевого энцефалита, выявить особенности молекулярно-генетической характеристики и их связь с патогенностью возбудителя. Материалы и методы. Дана полногеномная характеристика 63 штаммов вирусного клещевого энцефалита, выделенных на территории Дальнего Востока и зарегистрированных в GeneBank. Проведено патоморфологическое исследование центральной нервной системы обезьян, зараженных высоковирулентными штаммами Sofjin и Хабаровский-17 вирусного клещевого энцефалита. Результаты. Все штаммы отнесены к дальневосточному субтипу вирусного клещевого энцефалита и расположились в 3 кластерах, отмечена территориальная привязанность отдельных групп штаммов. В кластере Sofjin-подобных штаммов определились самостоятельные группы, изолированные на территориях только Приморского края, и отдельные группы – только на северных очаговых территориях (Хабаровский край). Кластер Senzhang-подобных штаммов представлен штаммами разных кластеров, изолированными в Китае и на всей территории Дальнего Востока. Кластер Oshimaподобных изолятов, кроме штаммов из Японии, состоит из штаммов, изолированных только на юге Дальнего Востока (в Приморском крае). Инкубационный период заболевания у экспериментальных животных был короче при заражении штаммом Sofjin (3–5 дней), чем при заражении штаммом Хабаровский-17 (7 и более дней). Выявлены штаммоспецифические различия по степени выраженности морфологических изменений в центральной нервной системе. Для приморских штаммов вирусного клещевого энцефалита характерна более высокая степень нейроинвазивности с более быстрым развитием тяжелых проявлений нейроинфекции, по сравнению с хабаровскими штаммами. Выводы: 1) на основе полногеномного секвенирования и филогенетического анализа 63 штаммов вирусного клещевого энцефалита выделены три основные кластера: Sofjin-, Senzhang- и Oshima-подобный; 2) в этих кластерах установлена территориальная привязанность групп штаммов вирусного клещевого энцефалита, имеющих определенную молекулярно-генетическую характеристику; 3) у приморских штаммов вирусного клещевого энцефалита выявлены генетически детерминированные преимущества в степени нейроинвазивности, обеспечивающие им способность более быстрого преодоления гематоэнцефалического барьера по сравнению с хабаровскими штаммами.</p></abstract><trans-abstract xml:lang="en"><sec><title>The aim of the work</title><p>The aim of the work: Using the data of genome-wide sequencing of tick-borne encephalitis virus strains of the Far Eastern population, reveal the peculiarities of the moleculargenetic characteristics and their relationship with the pathogenicity of the agent.</p></sec><sec><title>Materials and methods</title><p> Materials and methods. A full-genomic characteristic of 63 TBEV strains isolated in the Far East and registered in GeneBank wos given. A pathohistological study of the central nervous system of monkeys infected with the highly virulent strains Sofjin and Khabarovsk-17 TBEV was conducted.</p></sec><sec><title>Results</title><p> Results. All strains are assigned to the Far Eastern subtype of TBEV and are located in three clusters, the territorial attachment of individual strains groups is noted. In the cluster of Sofjin-like strains, independent groups were identified, isolated in the territories of Primorsky Krai only, and separate groups – only in northern focal territories (Khabarovsk Krai). The cluster Senzhang-like strains are represented by strains of different clusters, isolated in China and throughout the Far East. The Oshima-like cluster of strains, except for strains from Japan, consists of strains isolated only in the south of the Far East (in Primorsky Krai). The incubation period of the disease in experimental animals was shorter when infected with the Sofjin strain (3–5 days) than when infected with the Khabarovsk-17 strain (7 days or more). The strain-specific differences in the severity of morphological changes in the central nervous system were revealed. For primorsky TBEV strains, a higher degree of neuroinvasiveness was characteristed with a more rapid development of severe manifestations of neuroinfection, compared to khabarovsky strains.</p></sec><sec><title>Findings</title><p>Findings: 1) based on full-genome sequencing and phylogenetic analysis of 63 TBEV strains, three main clusters were distinguished: Sofjin-, Senzhang- and Oshima-like; 2) in these clusters, territorial attachment of TBEV strains groups with a certain molecular genetic characteristic was established; 3) in primorsky TBEV strains, genetically determined advantages in the degree of neuroinvasiveness have been revealed, which provide them with the ability to more quickly overcome the blood-brain barrier compared to khabarovsky strains.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>вирус клещевого энцефалита</kwd><kwd>молекулярно-генетическая характеристика штаммов</kwd><kwd>кластеры</kwd><kwd>патогенность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>tick-borne encephalitis virus (TBEV)</kwd><kwd>molecular genetic characteristics of strains</kwd><kwd>clusters</kwd><kwd>pathogenicity</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">Зильбер, Л.А. 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