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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="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Infection and Immunity</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Infection and Immunity</journal-title><trans-title-group xml:lang="ru"><trans-title>Инфекция и иммунитет</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2220-7619</issn><issn publication-format="electronic">2313-7398</issn><publisher><publisher-name xml:lang="en">SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1991</article-id><article-id pub-id-type="doi">10.15789/2220-7619-PPO-1991</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>REVIEWS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОБЗОРЫ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Phylogenetic structure of the global population of <italic>Helicobacter Pylori</italic></article-title><trans-title-group xml:lang="ru"><trans-title>Филогенетическая структура глобальной популяции <italic>Helicobacter Pylori</italic></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3199-8689</contrib-id><name-alternatives><name xml:lang="en"><surname>Starkova</surname><given-names>Daria A.</given-names></name><name xml:lang="ru"><surname>Старкова</surname><given-names>Дарья Андреевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Biology), Senior Researcher of the Pathogens Identification Laboratory, Senior Researcher of the Laboratory of Molecular Epidemiology and Evolutionary Genetics</p></bio><bio xml:lang="ru"><p>к.б.н., старший научный сотрудник лаборатории идентификации патогенов, старший научный сотрудник лаборатории молекулярной эпидемиологии и эволюционной генетики</p></bio><email>dariastarkova13@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9340-4132</contrib-id><name-alternatives><name xml:lang="en"><surname>Svarval</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Сварваль</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Senior Researcher, Head of the Pathogens Identification Laboratory</p></bio><bio xml:lang="ru"><p>к.м.н., старший научный сотрудник, зав. лабораторией идентификации патогенов</p></bio><email>alena.svarval@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">St. Petersburg Pasteur Institute</institution></aff><aff><institution xml:lang="ru">ФБУН НИИ эпидемиологии и микробиологии имени Пастера</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2022-11-17" publication-format="electronic"><day>17</day><month>11</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2022-12-30" publication-format="electronic"><day>30</day><month>12</month><year>2022</year></pub-date><volume>12</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>1009</fpage><lpage>1018</lpage><history><date date-type="received" iso-8601-date="2022-06-24"><day>24</day><month>06</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-11-02"><day>02</day><month>11</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Starkova D.A., Svarval A.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Старкова Д.А., Сварваль А.В.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Starkova D.A., Svarval A.V.</copyright-holder><copyright-holder xml:lang="ru">Старкова Д.А., Сварваль А.В.</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://iimmun.ru/iimm/article/view/1991">https://iimmun.ru/iimm/article/view/1991</self-uri><abstract xml:lang="en"><p><italic>Helicobacter pylori</italic> <italic>(H. pylori)</italic> is widely considered to be one of the oldest bacteria in the human microbiome. During the co-evolutionary relationships between humans and <italic>H. pylori</italic> bacterium, spanning at least 100 000 years, a high rate of mutation and recombination events led to extremely high genomic polymorphism of the <italic>H. pylori</italic> species. Despite this, the large diversity of <italic>H. pylori</italic> genomes is very well structured, allowing to divide it into different populations associated with the geographic location of <italic>H. pylori</italic> strains. To date, seven modern <italic>H. pylori</italic> populations have been determined globally: hpAfrica1, hpAfrica2, hpEastAsia, hpEurope, hpAsia2, hpNEAfrica and hspSahul originated from at least six ancestral populations (ancestral European 1, ancestral European 2, ancestral EastAsia, ancestral Africa1, ancestral Africa2, ancestral Sahul). The global phylogenetic analysis showed that <italic>H. pylori</italic> is organized into two superlineages: one containing hpAfrica2 and the other containing all other populations in a single monophyletic clade. This indicates that, hpAfrica2 is the most ancient of all <italic>H. pylori</italic> populations, while the others continued evolutionary development along as mankind spread beyond the African continent. Thus, the <italic>H. pylori</italic> species populational diversification, which occurred in parallel with paired hosts, allowed us to use <italic>H. pylori</italic> genetic variants as biological markers, reflecting ethnogeographic migration processes in human history. Moreover, the rapid and dynamic evolution of <italic>H. pylori</italic> informs about ongoing recombination events enabling use <italic>H. pylori</italic> as a model both for the co-evolution of pathogenic bacteria and humans as well as for within-individual host pathogen microevolution. This review summarized developments from numerous studies on coevolution process and phylogenetic pattern of the global <italic>H. pylori</italic> population. The relationships between currently known bacterial populations and subpopulations, related geographical distribution, reconstruction of evolutionary pathway for ancestral and recent populations are detailed. New data on the <italic>H. pylori</italic> strain populational pattern in Russia, as well as strains circulating in the Northern, Central and South America, are presented. Phylogenetic analysis of the <italic>H. pylori</italic> population pattern permitted to reconstruct both prehistoric and recent human migrations, demographic processes as well as multilayered evolutionary pathways of <italic>H. pylori</italic> population.</p></abstract><trans-abstract xml:lang="ru"><p>По мнению большинства исследователей <italic>Helicobacter pylori</italic> <italic>(H. pylori)</italic> является одной из самых древних бактерий в микробиоме человека. В ходе коэволюционных отношений человека и <italic>H. pylori</italic>, насчитывающих не менее 100 тыс. лет, высокая скорость адаптивных мутаций и рекомбинационных событий привели к необычайно высокому уровню геномного полиморфизма вида <italic>H. pylori</italic>. Несмотря на это, штаммы <italic>H. pylori</italic> были структурированы и разделены на различные популяции и субпопуляции в зависимости от их географического происхождения. На сегодняшний день определены семь современных популяций <italic>H. pylori</italic>: hpAfrica1, hpAfrica2, hpEastAsia, hpEurope, hpAsia2, hpNEAfrica и hspSahul, которые происходят по крайней мере от шести предковых популяций (ancestral European 1, ancestral European 2, ancestral EastAsia, ancestral Africa1, ancestral Africa2, ancestral Sahul). Многочисленные исследования позволили установить, что «прародиной» вида <italic>H. pylori</italic> является африканский континент. Глобальный филогенетический анализ последовательностей <italic>H. pylori</italic> выявил две суперлинии, одна из которых включала популяцию hpAfrica2, вторая — остальные популяции в единой монофилетической кладе. Это свидетельствует о том, что из всех популяций <italic>H. pylori</italic>, hpAfrica2 является самой древней, тогда как остальные продолжили свое эволюционное развитие по мере расселения человечества за пределы Африканского континента. Таким образом, популяционная диверсификация вида <italic>H. pylori</italic>, которая происходила параллельно с их хозяевами, позволила использовать генетические варианты <italic>H. pylori</italic> в качестве биологических маркеров, отражающих этнические и географические миграционные процессы в истории человека. Кроме того, быстрая и динамичная эволюция <italic>H. pylori</italic> информирует нас о продолжающихся до настоящего времени рекомбинационных событиях, что позволяет использовать <italic>H. pylori</italic> в качестве модели как для совместной эволюции патогенных бактерий и человека, так и для микроэволюции патогена в пределах одного индивидуума. В настоящем обзоре приводятся данные многочисленных исследований, касающихся эволюции и филогенетической структуры глобальной популяции <italic>H. pylori</italic>. Подробно описаны взаимоотношения между известными на сегодняшний день бактериальными популяциями и субпопуляциями, их географическое распределение, эволюционные траектории предковых популяций и пути появления новых субпопуляций патогена. Представлены новые данные о популяционной структуре российских штаммов <italic>H. pylori</italic>, а также штаммов, циркулирующих на территориях Северной, Центральной и Южной Америки. В ходе филогенетического анализа структуры популяции <italic>H. pylori</italic> представлена реконструкция тысячелетних миграционных и демографических процессов человека, а также сложного эволюционного пути бактериального вида <italic>H. pylori</italic>.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Helicobacter pylori</kwd><kwd>population structure</kwd><kwd>hpAfrica2</kwd><kwd>hpAfrica1</kwd><kwd>hpNEAfrica</kwd><kwd>hpEurope</kwd><kwd>hpEastAsia</kwd><kwd>hpAsia2</kwd><kwd>hpSahul</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Helicobacter pylori</kwd><kwd>структура популяции</kwd><kwd>hpAfrica2</kwd><kwd>hpAfrica1</kwd><kwd>hpNEAfrica</kwd><kwd>hpEurope</kwd><kwd>hpEastAsia</kwd><kwd>hpAsia2</kwd><kwd>hpSahul</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Борисова Т.В., Готовцев Н.Н., Барашков Н.А., Пак М.В., Алексеева М.П., Иннокентьева Н.Н., Морозов И.В., Бондарь А.А., Лоскутова К.С., Соловьев А.В., Пшенникова В.Г., Рафаилов А.М., Леханова С.Н., Федорова С.А. 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