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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">actabiomedica</journal-id><journal-title-group><journal-title xml:lang="ru">Acta Biomedica Scientifica</journal-title><trans-title-group xml:lang="en"><trans-title>Acta Biomedica Scientifica</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9420</issn><issn pub-type="epub">2587-9596</issn><publisher><publisher-name>Scientific Centre for Family Health and Human Reproduction Problems</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29413/ABS.2024-9.5.13</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-5041</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>МИКРОБИОЛОГИЯ И ВИРУСОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MICROBIOLOGY AND VIRUSOLOGY</subject></subj-group></article-categories><title-group><article-title>Сравнительный анализ штаммов вируса клещевого энцефалита европейского субтипа, изолированных от больных людей из Восточной Сибири и из Восточной и Северной Европы</article-title><trans-title-group xml:lang="en"><trans-title>Comparative analysis of European subtype tick-borne encephalitis virus strains isolated from patients from Eastern Siberia and Eastern and Northern Europe</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6324-8746</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козлова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козлова Ирина Валерьевна – доктор медицинских наук, руководитель лаборатории молекулярной эпидемиологии и генетической диагностики</p><p>664003, г. Иркутск, ул. Тимирязева, 16</p></bio><bio xml:lang="en"><p>Irina V. Kozlova – Dr. Sc. (Med.), Head at the Laboratory of Molecular Epidemiology and Genetic Diagnostics</p><p>Timiryazeva str., 16, Irkutsk 664003</p></bio><email xlink:type="simple">diwerhoz@rambler.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/0000-0003-4057-2890</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сунцова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Suntsova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сунцова Ольга Владимировна – кандидат биологических наук, научный сотрудник лаборатории молекулярной эпидемиологии и генетической диагностики</p><p>664003, г. Иркутск, ул. Тимирязева, 16</p></bio><bio xml:lang="en"><p>Olga V. Suntsova – Cand. Sc. (Biol.), Research Officer at the Laboratory of Molecular Epidemiology and Genetic Diagnostics</p><p>Timiryazeva str., 16, Irkutsk 664003</p></bio><email xlink:type="simple">olga_syntsova@list.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/0000-0001-7767-380X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ткачёв</surname><given-names>С. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Tkachev</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ткачёв Сергей Евгеньевич – кандидат биологических наук, доцент, ведущий научный сотрудник, руководитель научно-исследовательской лаборатории «Молекулярная вирусология», Институт фундаментальной медицины и биологии</p><p>420012, г. Казань, ул. К. Маркса, 74</p></bio><bio xml:lang="en"><p>Sergey E. Tkachev – Senior Research Officer, Head of Research Laboratory “Molecular Virology”, Associate Professor of the Department of Genetics</p><p>Karla Marksa str., 74, Kazan 420012</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7156-4036</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Парамонов</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Paramonov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Парамонов Алексей Игоревич – младший научный сотрудник лаборатории молекулярной эпидемиологии и генетической диагностики</p><p>664003, г. Иркутск, ул. Тимирязева, 16</p></bio><bio xml:lang="en"><p>Aleksei I. Paramonov – Junior Research Officer at the Laboratory of Molecular Epidemiology and Genetic Diagnostics</p><p>Timiryazeva str., 16, Irkutsk 664003</p></bio><email xlink:type="simple">Paramonov_a.i@mail.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/0000-0002-8209-616X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дорощенко</surname><given-names>Е. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Doroschenko</surname><given-names>E. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дорощенко Елена Константиновна – кандидат биологических наук, научный сотрудник лаборатории молекулярной эпидемиологии и генетической диагностики</p><p>664003, г. Иркутск, ул. Тимирязева, 16</p></bio><bio xml:lang="en"><p>Elena K. Doroshchenko – Cand. Sc. (Biol.), Research Officer at the Laboratory of Molecular Epidemiology and Genetic Diagnostics</p><p>Timiryazeva str., 16, Irkutsk 664003</p></bio><email xlink:type="simple">doroshchenko-virus@mail.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/0000-0003-3909-7551</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лисак</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lisak</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лисак Оксана Васильевна – младший научный сотрудник лаборатории молекулярной эпидемиологии и генетической диагностики</p><p>664003, г. Иркутск, ул. Тимирязева, 16</p></bio><bio xml:lang="en"><p>Oksana V. Lisak – Junior Research Officer at the Laboratory of Molecular Epidemiology and Genetic Diagnostics</p><p>Timiryazeva str., 16, Irkutsk 664003</p></bio><email xlink:type="simple">lisak.liza@rambler.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/0000-0001-8183-1233</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Охотина</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Okhotina</surname><given-names>Yu. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Охотина Юлия Сергеевна – младший научный сотрудник лаборатории молекулярной эпидемиологии и генетической диагностики</p><p>664003, г. Иркутск, ул. Тимирязева, 16</p></bio><bio xml:lang="en"><p>Julia S. Okhotina – Junior Research Officer at the Laboratory of Molecular Epidemiology and Genetic Diagnostics</p><p>Timiryazeva str., 16, Irkutsk 664003</p></bio><email xlink:type="simple">vippersona2389@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Научный центр проблем здоровья семьи и репродукции человека»</institution></aff><aff xml:lang="en"><institution>Scientific Сentre for Family Health and Human Reproduction Problems</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт фундаментальной медицины и биологии, ФГАОУ ВО «Казанский (Приволжский) федеральный университет»</institution></aff><aff xml:lang="en"><institution>Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>22</day><month>11</month><year>2024</year></pub-date><volume>9</volume><issue>5</issue><fpage>122</fpage><lpage>134</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Козлова И.В., Сунцова О.В., Ткачёв С.Е., Парамонов А.И., Дорощенко Е.К., Лисак О.В., Охотина Ю.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Козлова И.В., Сунцова О.В., Ткачёв С.Е., Парамонов А.И., Дорощенко Е.К., Лисак О.В., Охотина Ю.С.</copyright-holder><copyright-holder xml:lang="en">Kozlova I.V., Suntsova O.V., Tkachev S.E., Paramonov A.I., Doroschenko E.K., Lisak O.V., Okhotina Y.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.actabiomedica.ru/jour/article/view/5041">https://www.actabiomedica.ru/jour/article/view/5041</self-uri><abstract><p>Обоснование. Изоляцией штаммов вируса клещевого энцефалита европейского субтипа (ВКЭ-Евр) от больных людей было доказано, что в Сибири он участвует в региональной инфекционной патологии и вызывает клиническую картину, сходную с западным КЭ. Однако сравнительный анализ геномов штаммов ВКЭ-Евр, выделенных от людей больных КЭ в Восточной Сибири и в Европе, не проводился.Цель исследования. Сравнительное исследование генома и поиск детерминант вирулентности у штаммов ВКЭ-Евр, изолированных от больных людей из Восточной Сибири и Европы.Материалы и методы. В работе использован штамм 1G-98 ВКЭ-Евр из коллекции ФГБНУ НЦ ПЗСРЧ (GenBank № KY069119). В анализ также включены все полногеномные последовательности штаммов ВКЭ-Евр от людей, депонированные в GenBank на момент начала исследований. Секвенирование генома штамма 1G-98 проведено по методу Сэнгера. Получена характеристика вирулентности штамма при внутримозговом и подкожном заражении лабораторных мышей.Результаты. Показано, что по кодирующей области генома уровень различий штаммов ВКЭ-Евр из Сибири не превышает установленный ранее максимальный для данного субтипа показатель в 3,1 %. Установлено, что штамм 1G-98, выделенный из крови больного КЭ из Иркутской области, характеризуется высокими показателями церебральной и периферической активности. У него выявлена мутация D67G в домене DII белка Е, которая потенциально может быть ассоциирована с вирулентностью, обнаружена протяжённая делеция в вариабельной части 3’-некодирующей области генома, сопоставимая по длине с высоковирулентным штаммом Hypr из Европы.Заключение. Впервые осуществлён сравнительный анализ геномов штаммов ВКЭ-Евр от больных людей из азиатской части России и Европы, показавший их генетическое сходство, выявлены потенциальные детерминанты вирулентности.</p></abstract><trans-abstract xml:lang="en"><p>Background. Isolation of strains from tick-borne encephalitis (TBE) patients proved that the European subtype tick-borne encephalitis virus (TBEV-Eur) in Siberia is involved in regional human infectious pathology and causes a clinical picture similar to Western TBE. However, a comparative analysis of the genomes of TBEV-Eur strains isolated from TBE patients in Eastern Siberia and Europe has not been carried out.The aim. Genome comparative analysis and search for virulence determinants in TBEV-Eur strains isolated from patients in Eastern Siberia and Northern and Eastern Europe.Materials and methods. In current work, TBEV-Eur strain 1G-98 from the collection of Scientific Сentre for Family Health and Human Reproduction Problems (GenBank Acc. No. KY069119) was used. The analysis also included all complete genome sequences of TBEV-Eur strains from patients submitted in GenBank database at the time the study began. Complete genome sequencing of strain 1G-98 was performed using the Sanger method. The virulence of the strain was assessed by intracerebral and subcutaneous infection of laboratory mice.Results. It has been shown that, according to the coding region of the genomes, the level of differences between TBEV-Eur strains from Siberia does not exceed the previously established maximum for this subtype of 3.1 %. The strain 1G-98, isolated from the blood of TBE patient from the Irkutsk region demonstrated high cerebral and peripheral activity. In this strain, D67G mutation in E protein DII domain was revealed, which could potentially be associated with virulence, and a long deletion in the variable part of the 3’-noncoding genome region, comparable in length to the highly virulent strain Hypr from Europe was found.Conclusions. For the first time, a comparative analysis of the genomes of TBEV-Eur strains from TBE patients from the Asian part of Russia and Europe was carried out showing their genetic similarity, and potential virulence determinants were identified. Key words: tick-borne encephalitis virus, European subtype, genome, amino acid sequence, virulence determinants</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вирус клещевого энцефалита</kwd><kwd>европейский субтип</kwd><kwd>геном</kwd><kwd>аминокислотная последовательность</kwd><kwd>детерминанты вирулентности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>tick-borne encephalitis virus</kwd><kwd>European subtype</kwd><kwd>genome</kwd><kwd>amino acid sequence</kwd><kwd>virulence determinants</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках гос. задания № 1021060107125-0 и Программы стратегического академического лидерства «Приоритет-2030».</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">Current ICTV Taxonomy Release. 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