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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">actabiomedica</journal-id><journal-title-group><journal-title xml:lang="ru">Acta Biomedica Scientifica</journal-title><trans-title-group xml:lang="en"><trans-title>Acta Biomedica Scientifica</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2541-9420</issn><issn pub-type="epub">2587-9596</issn><publisher><publisher-name>Scientific Centre for Family Health and Human Reproduction Problems</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29413/ABS.2022-7.5-1.11</article-id><article-id custom-type="elpub" pub-id-type="custom">actabiomedica-3808</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>МИКРОБИОЛОГИЯ И ВИРУСОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MICROBIOLOGY AND VIRUSOLOGY</subject></subj-group></article-categories><title-group><article-title>Устойчивость биоплёнок Rhodococcus ruber к наночастицам CuO в зависимости от состава экзополимерного матрикса</article-title><trans-title-group xml:lang="en"><trans-title>Resistance of Rhodococcus ruber biofilms to CuO nanoparticles depending on exopolymer matrix composition</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9266-3877</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баяндина</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bayandina</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баяндина Елена Александровна – студентка</p><p>614068, г. Пермь, ул. Букирева, 15</p></bio><bio xml:lang="en"><p>Elena A. Bayandina – Student at the Department of Microbiology and Immunology</p><p>Bukireva str. 15, Perm 614068</p></bio><email xlink:type="simple">elenabaiandinapsu@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7220-4553</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Глебов</surname><given-names>Г. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Glebov</surname><given-names>G. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Глебов Григорий Геннадьевич – инженер кафедры микробиологии и иммунологии, ФГАОУ ВО «Пермский государственный национальный исследовательский университет»; аспирант, младший научный сотрудник, Институт экологии и генетики микроорганизмов УрО РАН – филиал ФГБУН «Пермский федеральный исследовательский центр» УрО РАН</p><p>614068, г. Пермь, ул. Букирева, 15614081, г. Пермь, ул. Голева, 13</p></bio><bio xml:lang="en"><p>Grigorii G. Glebov – Engineer at the Department of Microbiology and Immunology, Perm State University; Postgraduate, Junior Research Officer, Institute of Ecology and Genetics of Microorganisms, Perm Federal Research Center of the Ural Branch of the Russian Academy of Sciences</p><p>Bukireva str. 15, Perm 614068Goleva str. 13, Perm 614081</p></bio><email xlink:type="simple">grisha899@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9165-8363</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Куюкина</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuyukina</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Куюкина Мария Станиславовна – доктор биологических наук, профессор кафедры микробиологии и иммунологии, ФГАОУ ВО «Пермский государственный национальный исследовательский университет»; ведущий научный сотрудник, Институт экологии и генетики микроорганизмов УрО РАН – филиал ФГБУН «Пермский федеральный исследовательский центр» УрО РАН</p><p>614068, г. Пермь, ул. Букирева, 15614081, г. Пермь, ул. Голева, 13</p></bio><bio xml:lang="en"><p>Maria S. Kuyukina – Dr. Sc. (Biol.), Professor at the Department of Microbiology and Immunology, Perm State University; Leading Research Officer, Institute of Ecology and Genetics of Microorganisms, Perm Federal Research Center of the Ural Branch of the Russian Academy of Sciences</p><p>Bukireva str. 15, Perm 614068Goleva str. 13, Perm 614081</p></bio><email xlink:type="simple">kuyukina@iegm.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2558-4789</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ившина</surname><given-names>И. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivshina</surname><given-names>I. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ившина Ирина Борисовна – доктор биологических наук, профессор, академик РАН, профессор кафедры микробиологии и иммунологии, ФГАОУ ВО «Пермский государственный национальный исследовательский университет»; заведующая лабораторией, Институт экологии и генетики микроорганизмов УрО РАН – филиал ФГБУН «Пермский федеральный исследовательский центр» УрО РАН</p><p>614068, г. Пермь, ул. Букирева, 15614081, г. Пермь, ул. Голева, 13</p></bio><bio xml:lang="en"><p>Irina B. Ivshina – Dr. Sc. (Biol.), Professor, Academician of RAS, Professor at the Department of Microbiology and Immunology, Perm State University; Head of the Laboratory, Institute of Ecology and Genetics of Microorganisms, Perm Federal Research Center of the Ural Branch of the Russian Academy of Sciences</p><p>Bukireva str. 15, Perm 614068Goleva str. 13, Perm 614081</p></bio><email xlink:type="simple">Ivshina@iegm.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАОУ ВО «Пермский государственный национальный исследовательский университет»</institution></aff><aff xml:lang="en"><institution>Perm State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО «Пермский государственный национальный исследовательский университет»; Институт экологии и генетики микроорганизмов УрО РАН – филиал ФГБУН «Пермский федеральный исследовательский центр» УрО РАН</institution></aff><aff xml:lang="en"><institution>Perm State University; Institute of Ecology and Genetics of Microorganisms, Perm Federal Research Center of the Ural Branch of the Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>07</day><month>12</month><year>2022</year></pub-date><volume>7</volume><issue>5-1</issue><fpage>100</fpage><lpage>109</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Баяндина Е.А., Глебов Г.Г., Куюкина М.С., Ившина И.Б., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Баяндина Е.А., Глебов Г.Г., Куюкина М.С., Ившина И.Б.</copyright-holder><copyright-holder xml:lang="en">Bayandina E.A., Glebov G.G., Kuyukina M.S., Ivshina I.B.</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://www.actabiomedica.ru/jour/article/view/3808">https://www.actabiomedica.ru/jour/article/view/3808</self-uri><abstract><p>   Введение. Широкое использование наночастиц оксида меди (НЧ CuO) увеличивает их выброс в окружающую среду, что приводит к накоплению в трофических цепях. Бактериальные биоплёнки более устойчивы к физико-химическим факторам по сравнению с планктонными клетками благодаря экзополимерному матриксу (ЭПМ), состоящему из полисахаридов, белков, липидов и нуклеиновых кислот. Актинобактерии рода Rhodococcus перспективны для экобиотехнологии благодаря способности к биодеградации нефтепродуктов, пестицидов и других органических загрязнителей, а также биоаккумуляции тяжёлых металлов.   Цель исследования. Изучить влияние НЧ CuO на жизнеспособность клеток Rhodococcus ruber ИЭГМ 231 в биоплёнках и динамику основных компонентов ЭПМ.   Материалы и методы. Биоплёнки R. ruber выращивали на покровных стёклах в присутствии НЧ CuO, компоненты ЭПМ изучали с помощью конфокальной лазерной сканирующей микроскопии (КЛСМ) путём дифференцирующего окрашивания флурофорами: LIVE/DEAD – для живых и мёртвых клеток; Nile Red – для липидов; FITC – для белков; Calcofluor White – для бета-полисахаридов.   Результаты. Биоплёнки R. ruber, выращенные в минеральной среде с 1,0 об. % н-гексадекана, были более устойчивы к НЧ CuO по сравнению с биоплёнками, растущими в полноценной питательной среде (МПБ). Это обусловлено более интенсивным формированием ЭПМ, играющего основную роль в защите клеток от бактерицидного действия нанометалла. Показан слабый стимулирующий эффект низкой (0,001 г/л) концентрации НЧ CuO на биоплёнкообразование родококков. Изучены динамика и локализация основных компонентов ЭПМ биоплёнок при длительном (24–72 ч) культивировании с НЧ CuO. Выявлено повышенное содержание липидного компонента ЭПМ, увеличение относительного содержания полисахаридов и белков при воздействии высоких (0,01–0,1 г/л) концентраций НЧ CuO.   Заключение. Понимание механизмов взаимодействия нанометаллов и биоплёнок родококков будет способствовать созданию эффективных биокатализаторов на их основе и способов очистки окружающей среды. Полученные данные могут также использоваться для борьбы с нежелательными биоплёнками с помощью наночастиц металлов.</p></abstract><trans-abstract xml:lang="en"><p>   Background. The widespread use of copper oxide nanoparticles (CuO NPs) increases their release into the environment, which leads to accumulation in trophic chains. Bacterial biofilms are more resistant to physico-chemical factors compared to planktonic cells due to an exopolymer matrix (EPM) consisting of polysaccharides, proteins, lipids and nucleic acids. Rhodococcus actinobacteria are promising for environmental biotechnology due to biodegradation of petroleum products, pesticides and other organic pollutants, as well as bioaccumulation of heavy metals.   The aim. To investigate effects of CuO NPs on the viability of Rhodococcus ruber IEGM 231 cells in biofilms and the dynamics of EPM components.   Methods. R. ruber biofilms were grown on microscopy cover glass with CuO NPs and EPM components were studied using confocal laser scanning microscopy (CLSM) by differentiating staining with LIVE/DEAD to determine the number of living and dead cells, Nile Red for lipids, FITC for proteins and Calcofluor White for betapolysaccharides.   Results. It was found that R. ruber biofilms grown in a mineral medium with1.0 vol.% n-hexadecane are more resistant to CuO NPs compared to biofilms growing in a rich culture medium (meat-peptone broth). This was due to more intensive EPM formation, which plays a major role in protecting cells from the bactericidal action of nanometals. A weak stimulating effect of a low (0.001 g/l) concentration of CuO NPs on biofilm formation was registered. Dynamics and localization of main EPM components were monitored during prolonged (24–72 h) biofilm cultivation with CuO NPs. When exposed to high (0.01–0.1 g/l) concentrations of CuO NPs, a consistently high lipid content and an increase in concentrations of polysaccharides and proteins were revealed.   Conclusion. Understanding the complex interaction mechanisms of nanometals and biofilms will contribute to the development of effective biocatalysts based on immobilized bacterial cells. Also, the obtained data can be used to combat unwanted biofilms with the help of metal nanoparticles.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>биоплёнки</kwd><kwd>Rhodococcus</kwd><kwd>наночастицы металлов</kwd><kwd>конфокальная лазерная сканирующая микроскопия</kwd><kwd>экзополимерный матрикс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>biofilms</kwd><kwd>Rhodococcus</kwd><kwd>metal nanoparticles</kwd><kwd>confocal laser scanning microscopy</kwd><kwd>exopolymer matrix</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Это исследование было профинансировано Министерством науки и высшего образования Российской Федерации (АААА-А20-120081990069-3, АААА-А19-119112290008-4) и Российским научным фондом (18-14-00140). Статья опубликована в рамках V Всероссийской научно-практической конференции молодых учёных с международным участием «Фундаментальные и прикладные аспекты в медицине и биологии»</funding-statement><funding-statement xml:lang="en">This study was funded by the Ministry of Science and Higher Education of the Russian Federation (АААА-А20-120081990069-3, АААА-А19-119112290008-4) and Russian Science Foundation (18-14-00140).</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">Grigore M. E., Biscu E. R., Holban A. M., Gestal M. C., Grumezescu A. M. Methods of synthesis, properties and biomedical applications of CuO nanoparticles. Pharmaceuticals (Basel). 2016; 9 (4): 75. doi: 10.3390/ph9040075</mixed-citation><mixed-citation xml:lang="en">Grigore M. E., Biscu E. R., Holban A. M., Gestal M. C., Grumezescu A. M. 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