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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2018-62-1-66-72</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-490</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>ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>АНТИКАНЦЕРОГЕННАЯ АКТИВНОСТЬ БРАССИНОСТЕРОИДОВ В ОПУХОЛЕВЫХ КЛЕТКАХ КАРЦИНОМЫ ПЕЧЕНИ</article-title><trans-title-group xml:lang="en"><trans-title>ANTICANCEROGENIC ACTIVITY OF BRASSINOSTEROIDS IN LIVER TUMOR CELLS</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>Панибрат</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Panibrat</surname><given-names>Olesya V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>научный сотрудник</p><p>ул. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Researcher</p><p>5/2, Kuprevich Str., 220141, Minsk</p></bio><email xlink:type="simple">panibrat@iboch.bas-net.by</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>Шабуня</surname><given-names>П. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Shabunya</surname><given-names>Polina S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. биол. наук, вед. науч. сотрудник</p><p>ул. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Ph. D. (Biology), Leading researcher</p><p>5/2, Kuprevich Str., 220141, Minsk</p></bio><email xlink:type="simple">iboh_lfhi@rambler.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>Фатыхова</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fatykhava</surname><given-names>Sviatlana A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ст. науч. сотрудник</p><p>ул. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Senior researcher</p><p>5/2, Kuprevich Str., 220141, Minsk</p></bio><email xlink:type="simple">iboh_lfhi@rambler.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>Жабинский</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhabinskii</surname><given-names>Vladimir N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>член-корреспондент, д-р хим. наук, доцент, гл. науч. сотрудник, заместитель заведующего лабораторией</p><p>ул. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Corresponding Member, D. Sc. (Chemistry), Assistant professor, Chief researcher, Deputy Head of the Laboratory</p></bio><email xlink:type="simple">vz@iboch.bas-net.by</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>Киселев</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kiselev</surname><given-names>Peter A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт биоорганической химии Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>04</day><month>03</month><year>2018</year></pub-date><volume>62</volume><issue>1</issue><fpage>66</fpage><lpage>72</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Панибрат О.В., Шабуня П.С., Фатыхова С.А., Жабинский В.Н., Киселев П.А., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Панибрат О.В., Шабуня П.С., Фатыхова С.А., Жабинский В.Н., Киселев П.А.</copyright-holder><copyright-holder xml:lang="en">Panibrat O.V., Shabunya P.S., Fatykhava S.A., Zhabinskii V.N., Kiselev P.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://doklady.belnauka.by/jour/article/view/490">https://doklady.belnauka.by/jour/article/view/490</self-uri><abstract><p>Впервые охарактеризовано влияние природных брассиностероидов 24-эпибрассинолида (24-ЭБ) и 28-гомокастастерона (28-ГКС), а также синтетических аналогов (22S,23S)-24-эпибрассинолида и (22S,23S)-28-гомокастастерона на пролиферацию активности в раковой клеточной линии Hep G2 (карцинома печени), а также на каталитическую активность цитохрома P450, который участвует в метаболизме большинства проканцерогенов. Все четыре соединения при высоких концентрациях были активными в подавлении клеточной пролиферации исследуемой линии. Интересным является и тот факт, что при низких концентрациях 24-ЭБ, (22S,23S)-24-ЭБ и (22S,23S)-28-ГКС достоверно активировали рост клеток Hep G2. Все исследуемые брассиностероиды ингибировали активность CYP1A1 и CYP1B1, за исключением 28-ГКС. Оказываемый эффект зависел от структуры боковой цепи и был более выражен в случае SSориентации гидроксильных групп в положении C22 и С23 ((22S,23S)-28-гомокастастерон). Полученные результаты указывают на возможность использования исследуемых брассиностероидов (в наибольшей степени (22S,23S)-28-ГКС) для создания более эффективных препаратов для профилактики и лечения опухолевых заболеваний. </p></abstract><trans-abstract xml:lang="en"><p>In this study, we first characterized the effect of natural brassinosteroids, 24-epibrassinolide (EBl) and 28-homocastasterone (HCS), and synthetic analogs, (22S,23S)-24-epibrassinolide and (22S,23S)-28-homocastastone, on the growth of the cancer cell line Hep G2 (hepatocellular carcinoma), as well as on the catalytic activity of cytochrome P450, which participates in the metabolism of most procarcinogens. All four compounds at high concentrations suppressed the proliferation of the test cell line. It is also interesting that at low concentrations, 24-EBl, (22S,23S)-24-EBl and (22S,23S)28-HCS activated significantly the Hep G2 cell growth. All studied brassinosteroids, except for 28-HCS, inhibited the activity of CYP1A1 and CYP1B1. The effect depended on the structure of the side chain and was more pronounced in the case of the SS orientation of the hydroxyl groups at the positions C22 and C23 ((22S,23S)-28-homocastasterone). The results of this work suggest that the studied brassinosteroids (especially (22S,23S)-28-homocastasterone) can be used to create effective drugs for tumor prevention and treatment.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>брассиностероиды</kwd><kwd>Hep G2</kwd><kwd>антипролиферативная активность</kwd><kwd>Б[а]П-7</kwd><kwd>8-диол</kwd><kwd>индукция цитохрома Р450</kwd><kwd>монооксигеназная активность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>brassinosteroids</kwd><kwd>Hep G2</kwd><kwd>antiproliferative activity</kwd><kwd>B[a]P-7</kwd><kwd>8-diol</kwd><kwd>induction of cytochrome P450</kwd><kwd>monooxygenase activity</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">Khripach, V. A. Brassinosteroids. A new class of plant hormones / V. A. Khripach, V. N. 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