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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">11890</article-id><article-id pub-id-type="doi">10.32607/actanaturae.11890</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">B Cell Profiling in Patients with Pemphigus Vulgaris</article-title><trans-title-group xml:lang="ru"><trans-title>Профилирование B-лимфоцитов пациентов с аутоиммунной пузырчаткой</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Abrikosova</surname><given-names>Viktoria A.</given-names></name><name xml:lang="ru"><surname>Абрикосова</surname><given-names>Виктория Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mokrushina</surname><given-names>Yuliana A.</given-names></name><name xml:lang="ru"><surname>Мокрушина</surname><given-names>Юлиана Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Faculty of Chemistry</p></bio><bio xml:lang="ru"><p>химический факультет</p></bio><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ovchinnikova</surname><given-names>Leyla A.</given-names></name><name xml:lang="ru"><surname>Овчинникова</surname><given-names>Лейла Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Larina</surname><given-names>Ekaterina N.</given-names></name><name xml:lang="ru"><surname>Ларина</surname><given-names>Екатерина Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Terekhov</surname><given-names>Stanislav S.</given-names></name><name xml:lang="ru"><surname>Терехов</surname><given-names>Станислав Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Baranova</surname><given-names>Margarita N.</given-names></name><name xml:lang="ru"><surname>Баранова</surname><given-names>Маргарита Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lomakin</surname><given-names>Yakov A.</given-names></name><name xml:lang="ru"><surname>Ломакин</surname><given-names>Яков Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Balabashin</surname><given-names>Dmitriy S.</given-names></name><name xml:lang="ru"><surname>Балабашин</surname><given-names>Дмитрий Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bobik</surname><given-names>Tatyana V.</given-names></name><name xml:lang="ru"><surname>Бобик</surname><given-names>Татьяна Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kaliberda</surname><given-names>Elena N.</given-names></name><name xml:lang="ru"><surname>Калиберда</surname><given-names>Елена Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Knorre</surname><given-names>Vera D.</given-names></name><name xml:lang="ru"><surname>Кнорре</surname><given-names>Вера Дмитриевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shpilevaya</surname><given-names>Marina V.</given-names></name><name xml:lang="ru"><surname>Шпилевая</surname><given-names>Марина Валентиновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Aliev</surname><given-names>Teimur T.</given-names></name><name xml:lang="ru"><surname>Алиев</surname><given-names>Теймур Кантамирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Faculty of Chemistry</p></bio><bio xml:lang="ru"><p>химический факультет</p></bio><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Deryabin</surname><given-names>Dmitry G.</given-names></name><name xml:lang="ru"><surname>Дерябин</surname><given-names>Дмитрий Геннадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karamova</surname><given-names>Arfenya E.</given-names></name><name xml:lang="ru"><surname>Карамова</surname><given-names>Арфеня Эдуардовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kubanov</surname><given-names>Alexey A.</given-names></name><name xml:lang="ru"><surname>Кубанов</surname><given-names>Алексей Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kirpichnikov</surname><given-names>Mikhail P.</given-names></name><name xml:lang="ru"><surname>Кирпичников</surname><given-names>Михаил Петрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Faculty of Biology</p></bio><bio xml:lang="ru"><p>биологический факультет</p></bio><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Smirnov</surname><given-names>Ivan V.</given-names></name><name xml:lang="ru"><surname>Смирнов</surname><given-names>Иван Витальевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>smirnov.mx.ibch@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">State Research Center of Dermatovenereology and Cosmetology</institution></aff><aff><institution xml:lang="ru">Государственный научный центр дерматовенерологии и косметологии Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Endocrinology Research Center</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр эндокринологии Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-05-03" publication-format="electronic"><day>03</day><month>05</month><year>2023</year></pub-date><volume>15</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>13</fpage><lpage>18</lpage><history><date date-type="received" iso-8601-date="2022-12-20"><day>20</day><month>12</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2023-03-10"><day>10</day><month>03</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Abrikosova V.A., Mokrushina Y.A., Ovchinnikova L.A., Larina E.N., Terekhov S.S., Baranova M.N., Lomakin Y.A., Balabashin D.S., Bobik T.V., Kaliberda E.N., Knorre V.D., Shpilevaya M.V., Aliev T.T., Deryabin D.G., Karamova A.E., Kubanov A.A., Kirpichnikov M.P., Smirnov I.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Абрикосова В.А., Мокрушина Ю.А., Овчинникова Л.А., Ларина Е.Н., Терехов С.С., Баранова М.Н., Ломакин Я.А., Балабашин Д.С., Бобик Т.В., Калиберда Е.Н., Кнорре В.Д., Шпилевая М.В., Алиев Т.К., Дерябин Д.Г., Карамова А.Э., Кубанов А.А., Кирпичников М.П., Смирнов И.В.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Abrikosova V.A., Mokrushina Y.A., Ovchinnikova L.A., Larina E.N., Terekhov S.S., Baranova M.N., Lomakin Y.A., Balabashin D.S., Bobik T.V., Kaliberda E.N., Knorre V.D., Shpilevaya M.V., Aliev T.T., Deryabin D.G., Karamova A.E., Kubanov A.A., Kirpichnikov M.P., Smirnov I.V.</copyright-holder><copyright-holder xml:lang="ru">Абрикосова В.А., Мокрушина Ю.А., Овчинникова Л.А., Ларина Е.Н., Терехов С.С., Баранова М.Н., Ломакин Я.А., Балабашин Д.С., Бобик Т.В., Калиберда Е.Н., Кнорре В.Д., Шпилевая М.В., Алиев Т.К., Дерябин Д.Г., Карамова А.Э., Кубанов А.А., Кирпичников М.П., Смирнов И.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/11890">https://actanaturae.ru/2075-8251/article/view/11890</self-uri><abstract xml:lang="en"><p>Pemphigus vulgaris is a severe, socially significant autoimmune disease associated with autoantibodies to the desmoglein 3 antigen. The disease affects all age groups, beginning at 18 years of age; the mortality rate of pemphigus can reach as high as 50%, depending on a patient’s age and a number of other factors. There is no highly selective or personalized therapy for pemphigus vulgaris at the moment. One of the well-known therapeutic approaches to the disease is to use rituximab, an anti-CD20 antibody that can help achieve B cell depletion in peripheral blood. To solve the problem of nonspecific elimination of B cells in patients with pemphigus vulgaris, it is reasonable to use specific immunoligands, their choice being based on an assessment of the level of autoantibodies specific to each of the fragments of desmoglein. In this work, the proportion of autoreactive B cells in patients diagnosed with pemphigus vulgaris is found to be 0.09–0.16%; a positive correlation was revealed between the antibody level and the number of autoreactive B cells to various fragments of desmoglein.</p></abstract><trans-abstract xml:lang="ru"><p>Аутоиммунная пузырчатка – тяжелое социально значимое заболевание, обусловленное появлением антител к десмоглеину 3-го типа. Пузырчатка встречается преимущественно у пациентов старше 18 лет, а летальность при этом заболевании может достигать 50% в зависимости от возраста пациента и ряда других факторов. На сегодняшний день отсутствует высокоселективная или персонализированная терапия пузырчатки. Одним из известных средств терапии пузырчатки является ритуксимаб – анти-CD20-антитело, которое приводит к истощению В-лимфоцитов в периферической крови. Для селективной элиминации B-лимфоцитов у пациентов с пузырчаткой целесообразно использовать специфические иммунолиганды, выбор которых основан на определении уровня аутоантител к различным фрагментам десмоглеина. В представленной работе установлено, что доля аутореактивных B-клеток у пациентов с диагностированной пузырчаткой составляет 0.09–0.16%, обнаружена положительная корреляция между уровнем антител к различным фрагментам десмоглеина и количеством аутореактивных B-клеток.</p></trans-abstract><kwd-group xml:lang="en"><kwd>desmoglein 3</kwd><kwd>pemphigus vulgaris</kwd><kwd>targeted therapy</kwd><kwd>immunoligands</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>десмоглеин</kwd><kwd>пузырчатка</kwd><kwd>таргетная терапия</kwd><kwd>иммунолиганды</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования РФ</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>05.607.21.0325 (уникальный идентификатор проекта RFMEFI60719X0325)</award-id></award-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">РФФИ</institution></institution-wrap><institution-wrap><institution xml:lang="en">RFBR</institution></institution-wrap></funding-source><award-id>20-04-60468</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Aleksandrova G.A., Kubanov A.A., Melekhina L.E., Bogdanova E.V., Polikarpov A.V., Ohryzko E.V., Golubev N.A., Pronina T.V., Gladkikh T.E., Grincheva A.V. 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