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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Advances in Molecular Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Advances in Molecular Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Успехи молекулярной онкологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-805X</issn><issn publication-format="electronic">2413-3787</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">613</article-id><article-id pub-id-type="doi">10.17650/2313-805X-2023-10-4-116-123</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>EXPERIMENTAL REPORT</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ЭКСПЕРИМЕНТАЛЬНАЯ СТАТЬЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Molecular profile of Epstein–Barr virus in representatives of four ethnic groups of Russia: virus types, <italic>LMP1</italic> gene variability and malignancies</article-title><trans-title-group xml:lang="ru"><trans-title>Молекулярный профиль вируса Эпштейна–Барр у представителей четырех этносов России: типы вируса, вариабельность гена <italic>LMP1</italic> и злокачественные опухоли</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6209-977X</contrib-id><name-alternatives><name xml:lang="en"><surname>Smirnova</surname><given-names>K.  V.</given-names></name><name xml:lang="ru"><surname>Смирнова</surname><given-names>К. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522; 6 Miklukho-Maklaya St., Moscow 117998</p></bio><bio xml:lang="ru"><p>1154522 Москва, Каширское шоссе, 24; 117998 Москва, ул. Миклухо-Маклая, 6</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3953-7449</contrib-id><name-alternatives><name xml:lang="en"><surname>Lubenskaya</surname><given-names>A. K.</given-names></name><name xml:lang="ru"><surname>Лубенская</surname><given-names>А. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>1154522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8915-8274</contrib-id><name-alternatives><name xml:lang="en"><surname>Senyuta</surname><given-names>N. B.</given-names></name><name xml:lang="ru"><surname>Сенюта</surname><given-names>Н. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>1154522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8279-514X</contrib-id><name-alternatives><name xml:lang="en"><surname>Dushenkina</surname><given-names>T. E.</given-names></name><name xml:lang="ru"><surname>Душенькина</surname><given-names>Т. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>1154522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1840-4364</contrib-id><name-alternatives><name xml:lang="en"><surname>Gurtsevitch</surname><given-names>V. E. </given-names></name><name xml:lang="ru"><surname>Гурцевич</surname><given-names>В. Э.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Vladimir E. Gurtsevitch.</p><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>Гурцевич Владимир Эдуардович.</p><p>1154522 Москва, Каширское шоссе, 24</p></bio><email>gurtsevitch-vlad-88@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Institute of Carcinogenesis of the N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт канцерогенеза ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">The Peoples’ Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Российский университет дружбы народов»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2023</year></pub-date><volume>10</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>116</fpage><lpage>123</lpage><history><date date-type="received" iso-8601-date="2023-06-19"><day>19</day><month>06</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-12-15"><day>15</day><month>12</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Smirnova K.V., Lubenskaya A.K., Senyuta N.B., Dushenkina T.E., Gurtsevitch V.E.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Смирнова К.В., Лубенская А.К., Сенюта Н.Б., Душенькина Т.Е., Гурцевич В.Э.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Smirnova K.V., Lubenskaya A.K., Senyuta N.B., Dushenkina T.E., Gurtsevitch V.E.</copyright-holder><copyright-holder xml:lang="ru">Смирнова К.В., Лубенская А.К., Сенюта Н.Б., Душенькина Т.Е., Гурцевич В.Э.</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://umo.abvpress.ru/jour/article/view/613">https://umo.abvpress.ru/jour/article/view/613</self-uri><abstract xml:lang="en"><p><bold>Rationale</bold>. The discovery of two Epstein–Barr virus (EBV) types, EBV-1 and EBV-2, which differ in their transforming abilities stimulated their study in various populations in order to elucidate the relationship with malignant neoplasms.</p><p><bold>Aim</bold>. To study EBV-1 and EBV-2 in representatives of four ethnic groups of Russia, sequence analysis of the <italic>LMP1</italic> oncogene in virus isolates, and search for a correlation between the types of EBV and the incidence of certain types of malignant tumors in four ethnic groups.</p><p><bold>Materials and methods</bold>. From total DNA obtained from oral washings of Adygeans, Kalmyks, Tatars and Slavs, representatives of 3 Russian republics and the Moscow region, EBV DNA was amplified; its presence and concentration were analyzed by nested PCR, and each product was examined for the virus type and LMP1 variant. Types of EBV found in representatives of In four ethnic  groups were compared with the incidence rates of malignant tumors, among which EBV-associated cases may occur, in population of three republics and the Moscow region.</p><p><bold>Results</bold>. It was observed that  higher gastric cancer and lymphomas morbidity among Tatarstan and Moscow region populations (compared to populations of Adygea and Kalmykia) correlated with predominance in these ethnic groups – Tatars and Slavs – EBV-1 type having transforming potential <italic>in vitro</italic>. In Adygeis, non-transforming EBV-2 type was prevalent, and Kalmyks were infected with both types in approximately equal proportion. however, differences between tumor morbidities between the compared groups were statistically insignificant (<italic>p</italic> &gt;0.05). The identified spectrum of LMP1 variants, as well as the results of their sequencing, show genetic relations between EBV strains circulating in the studied ethnic groups.</p><p><bold>Conclusion</bold>. Study of EBV isolates for the first time performed in 4 ethnic groups of this country showed differences in distribution of the types of this virus but there was no correlation with tumor morbidity.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение</bold>. Обнаружение 2 типов вируса Эпштейна–Барр (ВЭБ) – ВЭБ 1-го (ВЭБ-1) и 2-го (ВЭБ-2) типов, – различающихся по трансформирующим способностям, стимулировало их изучение в различных популяциях с целью выяснения связи со злокачественными новообразованиями.</p><p><bold>Цель исследования</bold> – изучение ВЭБ-1 и ВЭБ-2 у представителей четырех этносов России, сиквенсный анализ онкогена <italic>LMP1 </italic>в изолятах вируса и поиск корреляции между типами ВЭБ и заболеваемостью определенными типами злокачественных опухолей.</p><p><bold>Материалы и методы</bold>. Из тотальной ДНК, полученной из смывов полости рта адыгейцев, калмыков, татар и славян, жителей республик Адыгея, Калмыкия и Татарстан и Московской области, амплифицировали  ДНК ВЭБ; ее наличие и концентрацию анализировали методом гнездной полимеразной цепной реакции и каждый продукт исследовали на тип вируса и вариант LMP1. Типы ВЭБ, обнаруженные у представителей этих 4 этносов, сопоставляли с показателями заболеваемости населения названных республик и Московской области злокачественными опухолями, среди которых могут встречаются ВЭБ-ассоциированные случаи.</p><p><bold>Результаты</bold>. Обнаружено, что более высокая заболеваемость раком желудка и лимфомами у населения Татарстана и Московской области (по сравнению с населением  Адыгеи и Калмыкии) коррелировала с доминированием у представителей этих этносов – татар и славян – ВЭБ 1-го типа, обладающего трансформирующим потенциалом <italic>in vitro</italic>. У адыгейцев преобладал нетрансформирующий  тип ВЭБ-2, а калмыки были инфицированы обоими типами вирусов примерно в равном соотношении. Однако различия между показателями заболеваемости опухолями в сравниваемых группах оказались статистически недостоверными (<italic>p</italic> &gt;0,05). Обнаруженный спектр вариантов LMP1, а также результаты их сиквенсного анализа свидетельствуют о генетическом родстве штаммов ВЭБ, циркулирующих в изучаемых этносах.</p><p><bold>Заключение</bold>. Изучение  изолятов ВЭБ, впервые проведенное у представителей 4 этносов одной страны, показало различие в распределении в них типов этого вируса, но связи с заболеваемостью опухолями не выявило.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Epstein–Barr virus</kwd><kwd>Epstein–Barr virus types</kwd><kwd>latent membrane protein 1</kwd><kwd>sequence analysis</kwd><kwd>Adyghe</kwd><kwd>Kalmyks</kwd><kwd>Tatars</kwd><kwd>Slavs</kwd><kwd>real-time polymerase chain reaction</kwd><kwd>malignant tumors</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>вирус Эпштейна–Барр</kwd><kwd>типы вируса Эпштейна–Барр</kwd><kwd>латентный мембранный белок 1</kwd><kwd>сиквенсный анализ</kwd><kwd>адыгейцы</kwd><kwd>калмыки</kwd><kwd>татары</kwd><kwd>славяне</kwd><kwd>полимеразная цепная реакция в реальном времени</kwd><kwd>злокачественные опухоли</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Sample J., Young L., Martin B. et al. 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