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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Vestnik dermatologii i venerologii</journal-id><journal-title-group><journal-title xml:lang="en">Vestnik dermatologii i venerologii</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник дерматологии и венерологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0042-4609</issn><issn publication-format="electronic">2313-6294</issn><publisher><publisher-name xml:lang="en">Rossijskoe Obschestvo Dermatovenerologov i Kosmetologov</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1204</article-id><article-id pub-id-type="doi">10.25208/vdv1204</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL STUDIES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>НАУЧНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Treponema pallidum tprII subfamily genes internal fragments sequencing</article-title><trans-title-group xml:lang="ru"><trans-title>Секвенирование фрагментов генов подсемейства tprII Treponema pallidum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4169-4128</contrib-id><contrib-id contrib-id-type="spin">7634-5521</contrib-id><name-alternatives><name xml:lang="en"><surname>Plakhova</surname><given-names>Xenia I.</given-names></name><name xml:lang="ru"><surname>Плахова</surname><given-names>Ксения Ильинична</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biol.)</p></bio><bio xml:lang="ru"><p>д.б.н.</p></bio><email>plahova_xenia@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0589-1263</contrib-id><contrib-id contrib-id-type="spin">6359-2366</contrib-id><name-alternatives><name xml:lang="en"><surname>Chestkov</surname><given-names>Alexander V.</given-names></name><name xml:lang="ru"><surname>Честков</surname><given-names>Александр Викторович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Biol.)</p></bio><bio xml:lang="ru"><p>к.б.н.</p></bio><email>chestkov@cnikvi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6550-9348</contrib-id><name-alternatives><name xml:lang="en"><surname>Abuduev</surname><given-names>Nazerbek K.</given-names></name><name xml:lang="ru"><surname>Абудуев</surname><given-names>Назербек Карримулаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biol.)</p></bio><bio xml:lang="ru"><p>д.б.н.</p></bio><email>ankor@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vasiliev</surname><given-names>Michael M.</given-names></name><name xml:lang="ru"><surname>Васильев</surname><given-names>Михаил Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biol.), Professor</p></bio><bio xml:lang="ru"><p>д.б.н.</p></bio><email>ainfo@omxcourson.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">State Research Center of Dermatovenereology and Cosmetology, Ministry of Health of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Государственный научный центр дерматовенерологии и косметологии» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2020</year></pub-date><volume>96</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>20</fpage><lpage>28</lpage><history><date date-type="received" iso-8601-date="2020-12-28"><day>28</day><month>12</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2021-01-21"><day>21</day><month>01</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Plakhova X.I., Chestkov A.V., Abuduev N.K., Vasiliev M.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Плахова К.И., Честков А.В., Абудуев Н.К., Васильев М.М.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Plakhova X.I., Chestkov A.V., Abuduev N.K., Vasiliev M.M.</copyright-holder><copyright-holder xml:lang="ru">Плахова К.И., Честков А.В., Абудуев Н.К., Васильев М.М.</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://vestnikdv.ru/jour/article/view/1204">https://vestnikdv.ru/jour/article/view/1204</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> The modern system of molecular typing of the Russian population of <italic>T. pallidum</italic> makes it possible to obtain results with a significant dominance of the 14<italic>d/f</italic> type, which determines the need to increase the differentiating ability of the applied methods of molecular typing of <italic>T. pallidum.</italic></p> <p><bold>Aim.</bold> Identification and analysis of nucleotide sequence variability of internal gene fragments of the <italic>tprII</italic> family of Russian <italic>T. pallidum subsp. pallidum </italic>strains.</p> <p><bold>Material and methods.</bold> The study of internal variable fragments of genes of the tprII family was carried out among 240 clinical isolates of <italic>T. pallidum</italic> obtained from the Central (Kaluga Region, Moscow), North Caucasian (Stavropol Territory), Far East (Republic of Sakha), Volga (Chuvash Republic), Southern (Astrakhan Region) and Siberian (Novosibirsk and Omsk Regions, Republic of Tyva) federal districts in 2014–2020. The sequence of internal variable fragments of genes of the tprII family was determined using capillary sequencialng technology.</p> <p><bold>Results.</bold> The primers allowing both direct amplification of the internal variable region of the tprII genes subfamily and correct sequencing of their internal regions have been proposed. It was found one SNP at positions 1340 of <italic>tprG</italic> gene. The polymorphism differs the reference Nichols strain from globally distributed Street 14 genogroup variants.</p> <p><bold>Conclusion.</bold> The variability of <italic>tprII</italic> subfamily genes nucleotide sequences in modern Russian strains of <italic>T. pallidum subsp. pallidum</italic> is an additional fund to increase the efficiency of the modern <italic>T. pallidum</italic> molecular typing system.</p> <p> </p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Современная система молекулярного типирования российской популяции <italic>T. pallidum</italic> позволяет получать результаты с существенным доминированием типа 14<italic>d/f</italic>, что определяет необходимость повышения дифференцирующей способности применяемых методов молекулярного типирования <italic>T. pallidum</italic>.</p> <p><bold>Цель.</bold> Идентификация с использованием технологии капиллярного секвенирования и анализ вариабельности нуклеотидных последовательностей внутренних фрагментов генов подсемейства <italic>tprII</italic> современных российских штаммов <italic>T. pallidum subsp. pallidum</italic>.</p> <p><bold>Материал и методы.</bold> Исследование внутренних вариабельных фрагментов генов подсемейства <italic>tprII</italic> проведено среди 240 клинических изолятов <italic>T. pallidum</italic>, полученных из специализированных медицинских учреждений дерматовенерологического профиля Центрального (Калужская область, г. Москва), Северо-Кавказского (Ставропольский край), Дальневосточного (Республика Саха), Приволжского (Чувашская Республика), Южного (Астраханская область) и Сибирского (Новосибирская и Омская области, Республика Тыва) федеральных округов в 2014–2020 гг.</p> <p>Последовательность внутренних вариабельных фрагментов генов подсемейства <italic>tprII</italic> определена с использованием технологии капиллярного секвенирования.</p> <p><bold>Результаты.</bold> Предложены олигонуклеотиды, позволяющие проводить амплификацию внутренних участков генов непосредственно из ДНК изолята и обеспечивать корректное прочтение его нуклеотидной последовательности при секвенировании. Описаны 2 варианта последовательностей внутренних вариабельных участков, отличающихся по составу, в нуклеотидной позиции 1340 гена <italic>tprG</italic> штамма Nichols <italic>T. pallidum</italic>.</p> <p><bold>Заключение.</bold> Вариабельность нуклеотидных последовательностей генов подсемейства <italic>tprII</italic> современных российских штаммов <italic>T. pallidum subsp. pallidum</italic> является одним из резервов для повышения эффективности современной системы молекулярного типирования <italic>T. pallidum</italic>.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Treponema pallidum subsp. pallidum</kwd><kwd>molecular typing</kwd><kwd>tprII genes</kwd><kwd>sequencing</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Treponema pallidum subsp. pallidum</kwd><kwd>молекулярное типирование</kwd><kwd>гены tprII</kwd><kwd>секвенирование</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Akhtar A, Fuchs E, Mitchison T, et al. 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