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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">10.21055/0370-1069-2011-1(107)-70-73</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-592</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>ИММУНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>IMMUNOLOGY</subject></subj-group></article-categories><title-group><article-title>Конструирование кандидата в вакцинные штаммы Yersinia pestis с пониженной реактогенностью</article-title><trans-title-group xml:lang="en"><trans-title>Construction of Candidate Yersinia pestis Vaccine Strains with Reduced Reactogenicity</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Агеев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ageev</surname><given-names>S. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шайхутдинова</surname><given-names>Р. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaikhutdinova</surname><given-names>R. Z.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бахтеева</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakhteeva</surname><given-names>I. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Титарева</surname><given-names>Г. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Titareva</surname><given-names>G. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Комбарова</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kombarova</surname><given-names>T. I.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дентовская</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dentovskaya</surname><given-names>S. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Анисимов</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Anisimov</surname><given-names>A. P.</given-names></name></name-alternatives><email xlink:type="simple">anisimov@obolensk.org</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственный научный центр прикладной микробиологии и биотехнологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Research Center for Applied Microbiology and Biotechnology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2011</year></pub-date><pub-date pub-type="epub"><day>20</day><month>02</month><year>2011</year></pub-date><volume>0</volume><issue>1(107)</issue><fpage>70</fpage><lpage>73</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Агеев С.А., Шайхутдинова Р.З., Бахтеева И.В., Титарева Г.М., Комбарова Т.И., Дентовская С.В., Анисимов А.П., 2011</copyright-statement><copyright-year>2011</copyright-year><copyright-holder xml:lang="ru">Агеев С.А., Шайхутдинова Р.З., Бахтеева И.В., Титарева Г.М., Комбарова Т.И., Дентовская С.В., Анисимов А.П.</copyright-holder><copyright-holder xml:lang="en">Ageev S.A., Shaikhutdinova R.Z., Bakhteeva I.V., Titareva G.M., Kombarova T.I., Dentovskaya S.V., Anisimov A.P.</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/592">https://journal.microbe.ru/jour/article/view/592</self-uri><abstract><p>Разработана методология направленного конструирования лишенных маркеров антибиотикоустойчивости неревертирующих ΔlpxM мутантов Y. pestis, сочетающая прямой сайт-направленный мутагенез, клонирование мутантной аллели ΔlpxM::cat в суицидном векторе pCVD442, гомологичную рекомбинацию in vivo и удаление кассеты устойчивости к антибиотику. Созданный на основе вакцинного штамма Y. pestis EV линии НИИЭГ нокаутный мутант по гену lpxM, лишенный маркеров антибиотикоустойчивости, синтезировал липополисахарид (ЛПС) со сниженной способностью стимулировать продукцию TNF-α. Степень снижения провоспалительной активности ЛПС, синтезируемого мутантным штаммом Y. pestis EVΔlpxM, была значительно выше в тестах на клетках-мишенях человека по сравнению с мышиной моделью.</p></abstract><trans-abstract xml:lang="en"><p>The technology of directed constructing of non-reverting Y. pestis ∆lpxM mutants, lacking antibiotic resistance markers was developed. It included direct site-specific mutagenesis, cloning of mutant ∆lpxM::cat allele in pCVD442 suicide vector, homologous recombination in vivo and deletion of the antibiotic resistance cassette. lpxM gene knockout mutant created on the basis of vaccine Y. pestis EV NIIEG strain lacking antibiotic resistance markers synthesized a lipopolysaccharide (LPS) with reduced ability to stimulate TNF-α production. The level of reduction of anti-inflammatory activity of the LPS synthesized by the mutant Y. pestis EV∆ lpxM strain was significantly higher in the test with human target cells in comparison with mouse model.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>lpxM</kwd><kwd>сайт-направленный мутагенез</kwd><kwd>липополисахарид</kwd><kwd>эндотоксическая активность</kwd><kwd>Yersinia pestis</kwd></kwd-group><kwd-group xml:lang="en"><kwd>lpxM</kwd><kwd>site-specific mutagenesis</kwd><kwd>lipopolysaccharide</kwd><kwd>endotoxic activity</kwd><kwd>Yersinia pestis</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">Ашмарин И.П., Воробьев А.А. Статистические методы в микробиологических исследованиях. Л.: Государственное издательство медицинской литературы; 1962, 104 c.</mixed-citation><mixed-citation xml:lang="en">Ashmarin I.P., Vorob’ev A.A. 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