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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">antibiotics</journal-id><journal-title-group><journal-title xml:lang="ru">Антибиотики и Химиотерапия</journal-title><trans-title-group xml:lang="en"><trans-title>Antibiot Khimioter = Antibiotics and Chemotherapy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0235-2990</issn><publisher><publisher-name>ООО «Издательство ОКИ»</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">antibiotics-475</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Микробная тест-система для поиска ингибиторов биосинтеза стеролов</article-title><trans-title-group xml:lang="en"><trans-title>Microbial Test-System for Screening of Inhibitors of Sterol Biosynthesis</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>Тренин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Trenin</surname><given-names>A. S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «НИИ по изысканию новых антибиотиков им. Г.Ф. Гаузе» РАМН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>G.F. Gause Institute of New Antibiotics, Russian Academy of Medical Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2013</year></pub-date><pub-date pub-type="epub"><day>13</day><month>05</month><year>2020</year></pub-date><volume>58</volume><issue>3-4</issue><fpage>3</fpage><lpage>9</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ООО «Издательство ОКИ», 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">ООО «Издательство ОКИ»</copyright-holder><copyright-holder xml:lang="en">ООО «Издательство ОКИ»</copyright-holder><license xlink:href="https://www.antibiotics-chemotherapy.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.antibiotics-chemotherapy.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.antibiotics-chemotherapy.ru/jour/article/view/475">https://www.antibiotics-chemotherapy.ru/jour/article/view/475</self-uri><abstract><p>Предлагается новая экономичная высокоэффективная микробная тест-система, позволяющая осуществлять поиск ингибиторов биосинтеза стеролов. Система основана на культивировании гриба Acremonium fusidioides (по прежней классификации Fusidium coccineum), образующего фузидиевую кислоту (фузидин) - антибиотик стероидной структуры. Значительное сходство в биосинтезе фузидиевой кислоты в организме гриба-продуцента и холестерина в организме человека, совпадение их начальных этапов вплоть до стадии формирования сквалена позволяет с успехом применять A.fusidioides для оценки микробных вторичных метаболитов - потенциальных ингибиторов биосинтеза холестерина. Ингибиторы биосинтеза стеролов в тесте с культурой A.fusidioides выявляются как соединения, резко снижающие продукцию фузидина при отсутствии заметного влияния на рост продуцента. Мевалоновая кислота - один из ключевых интермедиатов биосинтеза стеролов - может с успехом применяться для снятия ингибирующего действия ряда микробных метаболитов. Тест с A.fusidioides легко поддается механизации благодаря миниатюризации микробиологических процессов, выращиванию культуры в стерильных 6-, 24- и 96-луночных планшетах и использованию автоматических микропипеток, его результаты хорошо согласуются с оценкой ингибирующего действия метаболитов в тестах с клетками человека (культура клеток гепатобластомы G2). Указанная тест-ситема пригодна для работы с грубо очищенными экстрактами культуральной жидкости микроорганизмов-продуцентов и может быть применена на начальных этапах поиска.</p></abstract><trans-abstract xml:lang="en"><p>New effective economic microbial test-system for screening of microbial metabolites, that are inhibitors of sterol biosynthesis, is proposed. It is based on cultivation of fungal strain Acremonium fusidioides (former Fusidium coccineum), that produces fusidic acid (fusidin) that is antibiotic of steroid structure. Great similarity of fusidic acid biosynthesis in fungous strain and cholesterol biosynthesis in human organism, coincidence of their initial steps till squalene formation, allows use A. fusidioides as a model for estimation of microbial secondary metabolites that are potential inhibitors of sterol biosynthesis. Such inhibitors in A.fusidioides model are revealed as compounds that strongly reduce fusidin production without any visible influence on fungus growth. Mevalonate that is one of the crucial intermediates of sterol biosynthesis could be successfully applied for removal of inhibition induced by some microbial metabolites. A.fusidioides test-system can be easily mechanized because of miniaturization of microbiological procedures, cultivation in 6-, 24-, or 96-well plates and usage of automatic micropipettes and dispensers. The results of this model are well correlated with the ones obtained with human cells (Hep G2 test-system, offered earlier). A.fusidioides test-system can be applied at rather early stages of screening procedures and is quite effective for testing of crude extracts of producers' culture liquid.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ингибиторы биосинтеза стеролов</kwd><kwd>вторичный микробный метаболизм</kwd><kwd>микробные модели поиска</kwd><kwd>холестерин</kwd><kwd>мевалоновая кислота</kwd><kwd>фузидиевая кислота</kwd><kwd>ГМГ-КоА редуктаза</kwd><kwd>миниатюризация</kwd><kwd>механизация микробиологических процессов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>inhibitors of sterol biosynthesis</kwd><kwd>microbial secondary metabolites</kwd><kwd>microbial models for screening of new antibiotics</kwd><kwd>cholesterol</kwd><kwd>mevalonate</kwd><kwd>fusidin</kwd><kwd>HMG-CoA reductase</kwd><kwd>crude extracts of culture liquid</kwd><kwd>miniaturization</kwd><kwd>mechanization of microbial processes</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">Тренин А.С., Катруха Г.С. 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