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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">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">10383</article-id><article-id pub-id-type="doi">10.32607/20758251-2017-9-3-94-102</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Research Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные статьи</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">The Minor Variant of the SingleNucleotide Polymorphism rs3753381 Affects the Activity of a SLAMF1 Enhancer</article-title><trans-title-group xml:lang="ru"><trans-title>Минорный вариант однонуклеотидного полиморфизма rs3753381 увеличивает активность энхансера гена SLAMF1</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Putlyaeva</surname><given-names>L. V.</given-names></name><name xml:lang="ru"><surname>Путляева</surname><given-names>Л. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lidia.mikhailova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Schwartz</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Шварц</surname><given-names>A. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lidia.mikhailova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Klepikova</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Клепикова</surname><given-names>A. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lidia.mikhailova@mail.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vorontsov</surname><given-names>I. E.</given-names></name><name xml:lang="ru"><surname>Воронцов</surname><given-names>И. E.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lidia.mikhailova@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kulakovskiy</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Кулаковский</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lidia.mikhailova@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuprash</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Купраш</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lidia.mikhailova@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Engelhardt Institute of Molecular Biology, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт молекулярной биологии им. В.А. Энгельгардта РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute for Information Transmission Problems (Kharkevich Institute) of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт проблем передачи информации им. А.А. Харкевича РАН</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Vavilov Institute of General Genetics, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт общей генетики им. Н.И. Вавилова РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2017</year></pub-date><volume>9</volume><issue>3</issue><issue-title xml:lang="en">VOL 9, NO3 (2017)</issue-title><issue-title xml:lang="ru">ТОМ 9, №3 (2017)</issue-title><fpage>94</fpage><lpage>102</lpage><history><date date-type="received" iso-8601-date="2020-01-17"><day>17</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, Putlyaeva L.V., Schwartz A.M., Klepikova A.V., Vorontsov I.E., Kulakovskiy I.V., Kuprash D.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, Путляева Л.В., Шварц A.M., Клепикова A.В., Воронцов И.E., Кулаковский И.В., Купраш Д.В.</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">Putlyaeva L.V., Schwartz A.M., Klepikova A.V., Vorontsov I.E., Kulakovskiy I.V., Kuprash D.V.</copyright-holder><copyright-holder xml:lang="ru">Путляева Л.В., Шварц A.M., Клепикова A.В., Воронцов И.E., Кулаковский И.В., Купраш Д.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://actanaturae.ru/2075-8251/article/view/10383">https://actanaturae.ru/2075-8251/article/view/10383</self-uri><abstract xml:lang="en"><p>The SLAMF1 gene encodes CD150, a transmembrane glycoprotein expressed on the surface of T and B-lymphocytes, NK-cells, dendritic cells, and subpopulations of macrophages and basophils. We investigated the functional regulatory polymorphisms of the SLAMF1 locus associated with autoimmune processes, using bioinformatics and a mutational analysis of the regulatory elements overlapping with polymorphic positions. In the reporter gene assay in MP-1 and Raji B-cell lines, the enhancer activity of the regulatory region of the locus containing the rs3753381 polymorphism demonstrated a twofold increase upon the introduction of the rs3753381 minor variant (G → A) associated with myasthenia gravis. An analysis of the nucleotide context in the vicinity of rs3753381 revealed that the minor version of this polymorphism improves several binding sites for the transcription factors of FOX and NFAT, and RXR nuclear receptors. All mutations that disrupt any of these sites lead to a decrease in the enhancer activity both in МР-1 and in Raji cells, and each of the two B-cell lines expresses a specific set of these factors. Thus, the minor variant of the rs3753381 polymorphism may contribute to the development of myasthenia gravis by modulating SLAMF1 expression, presumably in pathogenic B-lymphocytes.</p></abstract><trans-abstract xml:lang="ru"><p>Ген SLAMF1 кодирует трансмембранный гликопротеин CD150, экспрессируемый на поверхности T- и B-лимфоцитов, NK-клеток, дендритных клеток, субпопуляций базофилов и макрофагов. При помощи биоинформатического и мутационного анализа регуляторных элементов, перекрывающихся с полиморфными позициями, мы провели поиск функциональных регуляторных полиморфизмов локуса SLAMF1, ассоциированных с аутоиммунными процессами. Анализ активности гена-репортера в B-клеточных линиях МР-1 и Raji показал, что введение минорного варианта полиморфизма rs3753381 (G &gt; A), ассоциированного с миастенией гравис, более чем вдвое увеличивает энхансерную активность регуляторного участка локуса, содержащего rs3753381. При анализе нуклеотидного контекста в окрестности rs3753381 установлено, что минорный вариант этого полиморфизма улучшает сайты связывания факторов транскрипции семейств FOX и NFAT и ядерных рецепторов семейства RXR. Внесение мутаций, нарушающих какие-либо из этих сайтов, приводит к снижению энхансерной активности как в клетках МР-1, так и в Raji, причем каждая из двух использованных В-клеточных линий экспрессирует специфический набор таких факторов. Таким образом, минорный вариант полиморфизма rs3753381 может быть ассоциирован с миастенией гравис за счет модуляции экспрессии SLAMF1, предположительно, в В-лимфоцитах, участвующих в патологических аутоиммунных реакциях.</p></trans-abstract><kwd-group xml:lang="en"><kwd>autoimmunity</kwd><kwd>B cells</kwd><kwd>noncoding polymorphism</kwd><kwd>transcriptional regulation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>аутоиммунитет</kwd><kwd>некодирующий полиморфизм</kwd><kwd>регуляция транскрипции</kwd><kwd>В-клетки</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by a grant from the Russian Science Foundation (No. 14-14-01140).</funding-statement><funding-statement xml:lang="ru">Работа поддержана грантом РНФ (№ 14-14-01140).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Cannons J.L., Tangye S.G., Schwartzberg P.L. // Annu. Rev. 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