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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">microbe</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы особо опасных инфекций</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Particularly Dangerous Infections</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0370-1069</issn><issn pub-type="epub">2658-719X</issn><publisher><publisher-name>Russian Research Anti-Plague Institute “Microbe”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21055/0370-1069-2020-3-83-88</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-1367</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Качественные показатели экспериментальных бруцеллезных антигенных препаратов, предназначенных для клеточных тестов in vitro</article-title><trans-title-group xml:lang="en"><trans-title>Qualitative Indicators of Experimental Brucellosis Antigen Preparations Designed for Cellular Tests in vitro</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3564-0791</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курчева</surname><given-names>C. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurcheva</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><email xlink:type="simple">stavnipchi@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9366-5647</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковалев</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalev</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0422-6755</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пономаренко</surname><given-names>Д. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponomarenko</surname><given-names>D. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9442-6966</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сирица</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Siritsa</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6068-6655</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костюченко</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostyuchenko</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6617-9504</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кошкидько</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Koshkid’ko</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8443-4089</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жарникова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zharnikova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6073-6544</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ракитина</surname><given-names>Е. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Rakitina</surname><given-names>E. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1054-8937</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Логвиненко</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Logvinenko</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7698-7361</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жиров</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhirov</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Российская Федерация, 355035, Ставрополь, ул. Советская, 13–15</p></bio><bio xml:lang="en"><p>13–15, Sovetskaya St., Stavropol, 355035, Russian Federation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФКУЗ «Ставропольский противочумный институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Stavropol Research Anti-Plague Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>19</day><month>10</month><year>2020</year></pub-date><volume>0</volume><issue>3</issue><fpage>83</fpage><lpage>88</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Курчева C.А., Ковалев Д.А., Пономаренко Д.Г., Сирица Ю.В., Костюченко М.В., Кошкидько А.Г., Жарникова И.В., Ракитина Е.Л., Логвиненко О.В., Жиров А.М., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Курчева C.А., Ковалев Д.А., Пономаренко Д.Г., Сирица Ю.В., Костюченко М.В., Кошкидько А.Г., Жарникова И.В., Ракитина Е.Л., Логвиненко О.В., Жиров А.М.</copyright-holder><copyright-holder xml:lang="en">Kurcheva S.A., Kovalev D.A., Ponomarenko D.G., Siritsa Y.V., Kostyuchenko M.V., Koshkid’ko A.G., Zharnikova I.V., Rakitina E.L., Logvinenko O.V., Zhirov A.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.microbe.ru/jour/article/view/1367">https://journal.microbe.ru/jour/article/view/1367</self-uri><abstract><p>Для разработки наиболее диагностически информативных методик постановки антиген-стимулированных клеточных тестов in vitro необходим тщательный подбор стимулирующего агента (антигена), обладающего достаточным активирующим потенциалом и обеспечивающим специфичность реакции.</p><p>Цель работы – определение качественных показателей экспериментальных серий бруцеллезных антигенных препаратов, предназначенных для клеточных тестов in vitro.</p><sec><title>Материалы и методы</title><p>Материалы и методы. Для проведения исследований получали антигенные комплексы бруцеллезного микроба – на основе вакцинных штаммов трех эпидемически значимых видов Brucella spp. (B. abortus, B. melitensis, B. suis). Количественное определение белков экспериментальных серий полученных препаратов WsAg и PPBC проводили методом специфической флуориметрии. Исследование белкового состава препаратов проводили методом капиллярного электрофореза. Качественный состав определяли методом ионообменной жидкостной хроматографии с рефрактометрической детекцией.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. В результате исследований определены физико-химические характеристики, изучены хроматографические профили и состав белковых фракций, а также проведена апробация изготовленных экспериментальных серий бруцеллезных антигенных препаратов. Анализируя охарактеризованный белковый и полисахаридный состав полученных образцов WsAg, можно сделать заключение о невозможности использования препарата WsAg для клеточных тестов, так как экспериментально доказана вероятность проявления неспецифических реакций лимфоцитов in vitro. В свою очередь, комплексный бруцеллезный антигенный препарат PPBC обладает выраженной специфической активностью и специфичностью в условиях in vitro и имеет перспективы использования при разработке методических подходов для лабораторной диагностики бруцеллеза и оценке фактической привитости контингентов риска после вакцинации. Полученные характеристики позволят обеспечить надлежащее качество при производстве разработанного экспериментального препарата PPBC,  предназначенного для клеточных тестов in vitro, с учетом современных правил валидации и стандартизации. </p></sec></abstract><trans-abstract xml:lang="en"><p>In order to develop the most diagnostically informative methods for carrying out antigen-stimulated cellular tests in vitro a careful selection of stimulating agent (antigen) is required, possessing an adequate activating potential and providing specificity of the reaction.</p><p>Objective of the study was to identify the qualitative indicators of experimental batches of brucellosis antigen preparations designed for cellular tests in vitro.</p><sec><title>Materials and methods</title><p>Materials and methods. Initially we produced antigen complexes of brucellosis microbe on the basis of the vaccine strains of three epidemically significant Brucella species (B. abortus, B. melitensis, B. suis). Quantitative determination of WsAg and PPBC proteins of experimental preparation series was performed applying capillary electrophoresis. Qualitative composition was assessed through ion exchange liquid chromatography with refractometric detection.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. We have specified physical-chemical features, investigated chromatographic profiles and composition of protein fractions, as well as tried the produced experimental batches of brucellosis antigen preparations. After analyzing the defined protein and polysaccharide composition of the obtained WsAg samples, one can conclude that WsAg preparation cannot be used for cellular tests as the probability of non-specific lymphocyte reaction manifestation in vitro was experimentally proven. By contrast, complex brucellosis antigen preparation PPBC has an expressed specific activity and specificity under in vitro conditions and the prospects to be used when developing methodological approaches for laboratory diagnosis of brucellosis and assessment of de facto immunity rate in risk contingents after vaccination. The obtained parameters will allow for proper quality provision when manufacturing the developed experimental PPBC preparation designed for cellular tests in vitro, taking into account modern validation and standardization regulations. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>бруцеллез</kwd><kwd>Brucella spp.</kwd><kwd>антигенспецифические клеточные тесты in vitro</kwd><kwd>антигенный комплекс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>brucellosis</kwd><kwd>Brucella spp.</kwd><kwd>antigen-specific cellular tests in vitro</kwd><kwd>antigen complex</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Byndloss M.X., Tsolis R.M. Brucella spp. virulence factors and immunity. Annual Review of Animal Biosciences. 2016; 4:111– 27. DOI: 10.1146/annurev-animal-021815-111326.</mixed-citation><mixed-citation xml:lang="en">Byndloss M.X., Tsolis R.M. 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