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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">scbmt</journal-id><journal-title-group><journal-title xml:lang="ru">БИОМЕДИЦИНА</journal-title><trans-title-group xml:lang="en"><trans-title>Journal Biomed</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-5982</issn><issn pub-type="epub">2713-0428</issn><publisher><publisher-name>Scientific center of biomedical technologies of Federal Medical and Biological Agency</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33647/2074-5982-21-1-18-25</article-id><article-id custom-type="elpub" pub-id-type="custom">scbmt-1696</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>БИОТЕХНОЛОГИИ В БИОМЕДИЦИНЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOTECHNOLOGIES IN BIOMEDICINE</subject></subj-group></article-categories><title-group><article-title>Оптимизация очистки антигенных комплексов Klebsiella pneumoniae методом диафильтрации от гидроксиламина</article-title><trans-title-group xml:lang="en"><trans-title>Effect of Washing Solutions on Diafiltration Efficiency and Properties of Klebsiella pneumoniae Antigenic Complexes</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>Мартынова</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Martynova</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мартынова Дарья Сергеевна</p><p>105064, Москва, Малый Казенный пер., 5а</p></bio><bio xml:lang="en"><p>Daria S. Martynova</p><p>105064, Moscow, Maliy Kazenniy Alleyway, 5а</p></bio><email xlink:type="simple">martynova_d_s@mail.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>Солдатенкова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Soldatenkova</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Солдатенкова Алена Владимировна, к.б.н.</p><p>105064, Москва, Малый Казенный пер., 5а</p></bio><bio xml:lang="en"><p>Alena V. Soldatenkova, Cand. Sci. (Biol.)</p><p>105064, Moscow, Maliy Kazenniy Alleyway, 5а</p></bio><email xlink:type="simple">sol.alena.v@yandex.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>Калошин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaloshin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Калошин Алексей Алексеевич, к.б.н.</p><p>105064, Москва, Малый Казенный пер., 5а</p></bio><bio xml:lang="en"><p>Alexei A. Kaloshin, Cand. Sci. (Biol.)</p><p>105064, Moscow, Maliy Kazenniy Alleyway, 5а</p></bio><email xlink:type="simple">alex-k-1973@yandex.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>Лазарев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lazarev</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лазарев Сергей Александрович</p><p>105064, Москва, Малый Казенный пер., 5а</p></bio><bio xml:lang="en"><p>Sergey A. Lazarev</p><p>105064, Moscow, Maliy Kazenniy Alleyway, 5а</p></bio><email xlink:type="simple">lazarevsr1@gmail.com</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>Афанасьева</surname><given-names>О. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Afanasyeva</surname><given-names>O. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Афанасьева Ольга Юрьевна</p><p>105064, Москва, Малый Казенный пер., 5а</p></bio><bio xml:lang="en"><p>Olga M. Afanasyeva</p><p>105064, Moscow, Maliy Kazenniy Alleyway, 5а</p></bio><email xlink:type="simple">kukina1994@mail.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>Михайлова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhailova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михайлова Наталья Александровна, д.м.н., проф.</p><p>105064, Москва, Малый Казенный пер., 5а</p></bio><bio xml:lang="en"><p>Natalia A. Mikhailova, Dr. Sci. (Med.), Prof.</p><p>105064, Moscow, Maliy Kazenniy Alleyway, 5а</p></bio><email xlink:type="simple">n_michailova@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Научно-исследовательский институт вакцин и сывороток им. И.И. Мечникова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Mechnikov Research Institute of Vaccines and Sera</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>21</day><month>04</month><year>2025</year></pub-date><volume>21</volume><issue>1</issue><fpage>18</fpage><lpage>25</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мартынова Д.С., Солдатенкова А.В., Калошин А.А., Лазарев С.А., Афанасьева О.М., Михайлова Н.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Мартынова Д.С., Солдатенкова А.В., Калошин А.А., Лазарев С.А., Афанасьева О.М., Михайлова Н.А.</copyright-holder><copyright-holder xml:lang="en">Martynova D.S., Soldatenkova A.V., Kaloshin A.A., Lazarev S.A., Afanasyeva O.M., Mikhailova N.A.</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.scbmt.ru/jour/article/view/1696">https://journal.scbmt.ru/jour/article/view/1696</self-uri><abstract><p>Распространенность и антибиотикорезистентность бактерий группы ESKAPE вызывает трудности в их профилактике и лечении. В лаборатории протективных антигенов ФГБНУ «НИИВС им. И.И. Мечникова» ведется разработка иммуностимулирующих препаратов для профилактики заболеваний, вызываемых некоторыми представителями этой группы, в т. ч. Klebsiella pneumoniae. При выделении протективного антигена в качестве инактивирующего агента в процессе производства препарата используется гидроксиламин, обладающий токсичными для организма человека свойствами. Очистку конечного продукта от него затрудняет полисахаридная капсула, выделяемая K. pneumoniae. Цель работы состояла в оценке эффективности используемых для диафильтрации различных отмывающих растворов и их влияния на специфическую активность и химический состав получаемых антигенных комплексов K. pneumoniae. В исследовании использовали штамм K. pneumoniae 204, выращенный глубинным культивированием. Клетки полученной культуры выделяли методом центрифугирования и инактивировали гидроксиламином. Удаление инактивирующего агента проводили методом ультрафильтрации в режиме диафильтрации с использованием воды или буферов Tris-HCl pH=9,0 различных концентраций. Полученные антигены оценивали по содержанию остаточного гидроксиламина, полисахаридов, белка методом Лоури, нуклеиновых кислот методом Спирина и специфической активности методом РТПГА. Получены образцы антигенсодержащей жидкости K. pneumoniae 204. При использовании в процессе удаления гидроксиламина буферов Tris-HCl pH=9,0 содержание гидроксиламина снижалось до допустимых значений (менее 1 мкг/мл) при использовании 25-кратного объема раствора в любой из исследованных концентраций. Тогда как при использовании дистиллированной воды в качестве очищающего раствора в тех же объемах добиться аналогичного результата не получалось. Проведен анализ химического состава полученных антигенных комплексов. Применение буферного раствора Tris-HCl pH=9,0 10 мМ для удаления гидроксиламина из антигенсодержащей жидкости K. pneumoniae оптимально и не влияет на химический состав и активность ее антигенных комплексов.</p></abstract><trans-abstract xml:lang="en"><p>The prevalence and antibiotic resistance of ESKAPE bacteria cause difficulties in the prevention and treatment of their infections. Specialists of the Protective Antigen Laboratory of I.I. Mechnikov Scientific Research Institute of Vaccines and Serums continue work on  developing immunostimulating drugs for the prevention of diseases caused by some representatives of this group, including Klebsiella pneumoniae. When producing a drug and isolating a protective antigen, hydroxylamine is used as an inactivating agent. Purification of the final product from this toxic substance is complicated by a polysaccharide capsule secreted by K. pneumoniae. In this work, we evaluate the diafiltration efficiency of various washing solutions and their effect on the specific activity and chemical composition of the resulting antigen complexes of K. pneumoniae. To that end, a submerged cultured strain of K. pneumoniae 204 was used. The cells of the resulting culture were isolated by centrifugation and inactivated with hydroxylamine. The inactivating agent was removed by ultrafiltration in diafiltration mode using water or Tris-HCl buffers (pH=9.0) of  various concentrations. The as-obtained antigens were assessed in terms of the content of residual hydroxylamine, polysaccharides, protein by the Lowry method, nucleic acids by the Spirin method, and specific activity by hemagglutination inhibition assay. Samples of antigen-containing fluid of K. pneumoniae 204 were obtained. The use of Tris-HCl buffers (pH=9.0) for hydroxylamine removal led to a reduction in the hydroxylamine content to acceptable values (less than 1 μg/mL) when using a 25-fold volume of  the solution in any of the studied concentrations. At the same time, the use of distilled water as a purifying solution in  similar volumes did not produce a comparable result. The chemical composition of the resulting antigenic complexes was analyzed. The use of a Tris-HCl buffer solution (pH=9.0) at a concentration of 10 mM proves optimal for removing hydroxylamine from an antigen-containing fluid of K. pneumoniae, having no effect on the chemical composition and activity of its antigen complexes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>K. pneumoniae</kwd><kwd>культивирование</kwd><kwd>гидроксиламин</kwd><kwd>ультрафильтрация</kwd><kwd>диафильтрация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>K. pneumoniae</kwd><kwd>cultivation</kwd><kwd>hydroxylamine</kwd><kwd>ultrafiltration</kwd><kwd>diafiltration</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">настоящая работа выполнена в рамках соглашения с Министерством промышленности и торговли РФ о предоставлении грантов в форме субсидий из федерального бюджета  бюджетным учреждениям на реализацию проектов по разработке лекарственных препаратов и медицинских изделий № 020-15-2021-005 от 07.10.2021.</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the agreement with the Ministry of Industry  and Trade of the Russian Federation on the provision of grants in the form of subsidies from the Federal  budget to budgetary institutions for the implementation of projects on the development of drugs and medi cal devices No. 020-15-2021-005 dated 10/07/2021.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">МУК 4.1/4.2.588-96 «Методы контроля медицинских иммунобиологических препаратов, вводимых людям».</mixed-citation><mixed-citation xml:lang="en">MUK 4.1/4.2.588-96 «Metody kontrolya medicinskih immunobiologicheskih preparatov, vvod imyh lyudyam» [Guidelines 4.1/4.2.588-96 “Methods for control of medical immunobiological preparations administered to humans”. 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