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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">10518</article-id><article-id pub-id-type="doi">10.32607/20758251-2015-7-1-102-108</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">Selective Protective Potency of Yersinia pestis ΔnlpD Mutants</article-title><trans-title-group xml:lang="ru"><trans-title>Избирательная протективность ΔnlpD-мутантов Yersinia pestis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dentovskaya</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Дентовская</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivanov</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Иванов</surname><given-names>С. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kopylov</surname><given-names>P. Kh.</given-names></name><name xml:lang="ru"><surname>Копылов</surname><given-names>П. Х.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shaikhutdinova</surname><given-names>R. Z.</given-names></name><name xml:lang="ru"><surname>Шайхутдинова</surname><given-names>Р. З.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Platonov</surname><given-names>М. E.</given-names></name><name xml:lang="ru"><surname>Платонов</surname><given-names>М. E.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kombarova</surname><given-names>T. I.</given-names></name><name xml:lang="ru"><surname>Комбарова</surname><given-names>T. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gapel’chenkova</surname><given-names>T. V.</given-names></name><name xml:lang="ru"><surname>Гапельченкова</surname><given-names>T. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Balakhonov</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Балахонов</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Anisimov</surname><given-names>A. P.</given-names></name><name xml:lang="ru"><surname>Анисимов</surname><given-names>A. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anisimov@obolensk.org</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">State Research Center for Applied Microbiology</institution></aff><aff><institution xml:lang="ru">Государственный научный центр прикладной микробиологии и биотехнологии Роспотребнадзора</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Irkutsk Antiplague Research Institute of Siberia and Far East</institution></aff><aff><institution xml:lang="ru">Иркутский научно-исследовательский противочумный институт Сибири и Дальнего Востока Роспотребнадзора</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2015</year></pub-date><volume>7</volume><issue>1</issue><issue-title xml:lang="en">VOL 7, NO1 (2015)</issue-title><issue-title xml:lang="ru">ТОМ 7, №1 (2015)</issue-title><fpage>102</fpage><lpage>108</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 ©; 2015, Dentovskaya S.V., Ivanov S.A., Kopylov P.K., Shaikhutdinova R.Z., Platonov М.E., Kombarova T.I., Gapel’chenkova T.V., Balakhonov S.V., Anisimov A.P.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2015, Дентовская С.В., Иванов С.A., Копылов П.Х., Шайхутдинова Р.З., Платонов М.E., Комбарова T.И., Гапельченкова T.В., Балахонов С.В., Анисимов A.П.</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="en">Dentovskaya S.V., Ivanov S.A., Kopylov P.K., Shaikhutdinova R.Z., Platonov М.E., Kombarova T.I., Gapel’chenkova T.V., Balakhonov S.V., Anisimov A.P.</copyright-holder><copyright-holder xml:lang="ru">Дентовская С.В., Иванов С.A., Копылов П.Х., Шайхутдинова Р.З., Платонов М.E., Комбарова T.И., Гапельченкова T.В., Балахонов С.В., Анисимов A.П.</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/10518">https://actanaturae.ru/2075-8251/article/view/10518</self-uri><abstract xml:lang="en"><p>It has recently been shown that the NlpD lipoprotein is essential to Yersinia pestis virulence and that subcutaneous administration of the nlpD mutant could protect mice against bubonic and pneumonic plague better than the EV vaccine strain [PLoS One 2009. V. 4. № 9. e7023]. In this study, similar ΔnlpD mutants were generated on the basis of other Y. pestis parent strains, including strains from the subspecies microtus, which is avirulent to guinea pigs and humans. Comparative testing confirmed that immunization of mice with ΔnlpD mutants induces immunity 105 times more potent than the one induced by the administration of the EV vaccine strain. At the same time, NlpD- bacteria failed to protect guinea pigs in the case of a subcutaneous challenge with Y. pestis, inducing a 106 times less potent protection compared with that conferred by immunization with the EV vaccine strain. The possible causes of the observed phenomena are discussed.</p></abstract><trans-abstract xml:lang="ru"><p>Мутация по гену nlpD приводит, как показано недавно, к полной аттенуации Yersinia pestis, а nlpD-мутант превосходит вакцинный штамм EV76 по способности защищать мышей от гибели при заражении бубонной или легочной формой чумы [PLoS One. 2009. V. 4. № 9. e7023]. В представленной работе аналогичные ΔnlpD-мутанты сконструированы на основе других родительских штаммов Y. pestis, включая непатогенные для морских свинок и человека штаммы подвида microtus. Проведение сравнительной оценки подтвердило, что при подкожной иммунизации мышей ΔnlpD-мутанты индуцировали иммунный ответ, в 105 раз превосходящий по напряженности ответ на введение вакцинного штамма EV. В то же время варианты NlpD--бактерий практически не защищали морских свинок от подкожного заражения возбудителем чумы, уступая штамму EV по напряженности формируемого иммунитета в 10 раз. Обсуждаются возможные причины выявленного феномена.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Yersinia pestis</kwd><kwd>ΔnlpD mutant</kwd><kwd>selectivity of protective potency</kwd><kwd>live plague vaccine</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Yersinia pestis</kwd><kwd>ΔnlpD-мутант</kwd><kwd>избирательная протективность</kwd><kwd>чумная живая вакцина</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This research was conducted in the Laboratory for Plague Microbiology of the State Research Center for Applied Microbiology and Biotechnology as a part of government contracts No. 40-D of 30.05.2012, No. 34-D of 08.08.2013 within the framework of FTP “National System of Chemical and Biological Safety of the Russian Federation (2009-2014).”</funding-statement><funding-statement xml:lang="ru">Работа выполнена в лаборатории микробиологии чумы Государственного научного центра прикладной микробиологии и биотехнологии по государственным контрактам № 40-Д от 30.05.2012 г. и № 34-Д от 08.08.2013 г. в рамках ФЦП «Национальная система химической и биологической безопасности Российской Федерации (2009–2014 гг.)».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Naumov A.V., Ledvanov M.Yu., Drozdov I.G. // Immunologiya chumy (Plague immunology). 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