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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Advances in Molecular Oncology</journal-id><journal-title-group><journal-title xml:lang="en">Advances in Molecular Oncology</journal-title><trans-title-group xml:lang="ru"><trans-title>Успехи молекулярной онкологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-805X</issn><issn publication-format="electronic">2413-3787</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">711</article-id><article-id pub-id-type="doi">10.17650/2313-805X-2024-11-3-92-102</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>RESEARCH ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ЭКСПЕРИМЕНТАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Molecular mechanisms of novel selective glucocorticoid receptor agonist action in breast cancer cells</article-title><trans-title-group xml:lang="ru"><trans-title>Молекулярные механизмы действия нового селективного агониста глюкокортикоидного рецептора в клетках рака молочной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3318-9391</contrib-id><name-alternatives><name xml:lang="en"><surname>Zhidkova</surname><given-names>E. M.</given-names></name><name xml:lang="ru"><surname>Жидкова</surname><given-names>Е. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ekaterina Mikhailovna Zhidkova</p><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>Екатерина Михайловна Жидкова</p><p>115522 Москва, Каширское шоссе, 24</p></bio><email>e.zhidkova@ronc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0896-2952</contrib-id><name-alternatives><name xml:lang="en"><surname>Maksimova</surname><given-names>V. P.</given-names></name><name xml:lang="ru"><surname>Максимова</surname><given-names>В. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2675-089X</contrib-id><name-alternatives><name xml:lang="en"><surname>Grigoreva</surname><given-names>D. D.</given-names></name><name xml:lang="ru"><surname>Григорьева</surname><given-names>Д. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9480-3565</contrib-id><name-alternatives><name xml:lang="en"><surname>Shirinian</surname><given-names>V. Z.</given-names></name><name xml:lang="ru"><surname>Ширинян</surname><given-names>В. З.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>47 Leninsky Prospekt, Moscow 119991</p></bio><bio xml:lang="ru"><p>119991 Москва, Ленинский пр-кт, 47</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9710-8178</contrib-id><name-alternatives><name xml:lang="en"><surname>Yakubovskaya</surname><given-names>M. G.</given-names></name><name xml:lang="ru"><surname>Якубовская</surname><given-names>М. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115522</p><p>6 Miklukho-Maklaya St., Moscow 117198</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p><p>117198 Москва, ул. Миклухо-Маклая, 6</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1967-9637</contrib-id><name-alternatives><name xml:lang="en"><surname>Lesovaya</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Лесовая</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>24 Kashirskoe Shosse, Moscow 115</p><p>6 Miklukho-Maklaya St., Moscow 117198</p><p>9 Vysokovoltnaya St., Ryazan 390026</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p><p>119991 Москва, Ленинский пр-кт, 47</p><p>390026 Рязань, ул. Высоковольтная, 9</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУН «Институт органической химии им. Н.Д. Зелинского Российской академии наук»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Российский университет дружбы народов»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">I.P. Pavlov Ryazan State Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Рязанский государственный медицинский университет им. акад. И.П. Павлова» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2024</year></pub-date><volume>11</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>92</fpage><lpage>102</lpage><history><date date-type="received" iso-8601-date="2024-10-11"><day>11</day><month>10</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-10-11"><day>11</day><month>10</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Zhidkova E.M., Maksimova V.P., Grigoreva D.D., Shirinian V.Z., Yakubovskaya M.G., Lesovaya E.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Жидкова Е.М., Максимова В.П., Григорьева Д.Д., Ширинян В.З., Якубовская М.Г., Лесовая Е.А.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Zhidkova E.M., Maksimova V.P., Grigoreva D.D., Shirinian V.Z., Yakubovskaya M.G., Lesovaya E.A.</copyright-holder><copyright-holder xml:lang="ru">Жидкова Е.М., Максимова В.П., Григорьева Д.Д., Ширинян В.З., Якубовская М.Г., Лесовая Е.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://umo.abvpress.ru/jour/article/view/711">https://umo.abvpress.ru/jour/article/view/711</self-uri><abstract xml:lang="en"><p><bold>Introduction</bold>. Glucocorticoids (GC) are widely used in breast cancer (BC) therapy to reduce the side effects of cytostatic drugs and may exhibit antiproliferative effects on luminal BC cells. The biological action of GC is mediated by glucocorticoid receptor (GR) by two mechanisms: transrepression, which determines the therapeutic effect of GC, and transactivation (associated with the development of side effects, resistance to cytotoxic drugs, cancer progression and metastasis). Selective GR agonists (SEGRA) which may selective activate transrepression are a promising alternative to GC to use in combination cancer therapy. One of the most studied SEGRA is Compound A (CpdA). The instability of CpdA limits its use in clinical practice. So recently we performed synthesis and evaluation of biological activities of the CpdA analogue, CpdA-03.<bold>Aim</bold>. To compare the effects of SEGRA CpdA-03 and CpdA and dexamethasone on proliferative activity of breast cancer cells, as well as receptor nuclear translocation and activation of GR-dependent genes in breast cancer cells.<bold>Materials and methods</bold>. Luminal (MCF-7) and triple negative (MDA-MB-231) BC cell lines were used. The effect of CpdA-03 on proliferation was evaluated by direct counting of viable cells with trypan blue staining. The effect of the compound on cell distribution by cell cycle phases was assessed by flow cytofluorimetry with propidium iodide staining. Changes in the expression of GR-dependent genes after incubation with CpdA-03 were evaluated by quantitative polymerase chain reaction. Additionally, the ability of the new SEGRA to induce transactivation-associated translocation of the receptor to the nucleus was evaluated by Western blotting.<bold>Results</bold>. CpdA-03 was shown to suppress proliferation of luminal and triple negative BC cells. This compound causes changes in the expression of a number of GC-inducible genes, but does not stimulate GR phosphorylation and translocation to the nucleus in BC cells.<bold>Conclusion</bold>. The observed suppression of cell proliferation, as well as the ability of CpdA-03 to reduce gene expression of proteins regulating intercellular adhesion and cell migration, intracellular signaling, stress response, and transcription in BC cells makes it relevant for further development of the drug for use in the combination therapy of cancers including breast cancer.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение</bold>. Глюкокортикоиды (GC) широко применяются в терапии рака молочной железы (РМЖ) в качестве средства сопроводительной терапии для снижения побочных действий цитостатических препаратов. При этом они могут проявлять антипролиферативное действие на клетки люминального РМЖ. Биологическое действие GC опосредовано активацией глюкокортикоидного рецептора (GR) по двум механизмам: трансрепрессии, обусловливающей терапевтический эффект GC, и трансактивации, ассоциированной с развитием побочных эффектов, резистентности к цитотоксическим препаратам, а также с прогрессией и метастазированием РМЖ. В настоящее время ведется активный поиск безопасной альтернативы GC-терапии. Селективные агонисты GC (SEGRA), особенностью механизма действия которых является избирательный запуск трансрепрессии, можно рассматривать как перспективную альтернативу GC. Одним из наиболее полно охарактеризованных препаратов группы SEGRA является соединение Compound A (CpdA). Нестабильность CpdA ограничивает возможность его применения в клинической практике. Ранее наш коллектив синтезировал и охарактеризовал новый SEGRA – производное CpdA CpdA-03.<bold>Цель исследования</bold> – сравнение влияния SEGRA CpdA-03, CpdA и дексаметазона на пролиферативную активность клеток РМЖ, а также на ядерную транслокацию рецептора и активацию GR-зависимых генов в клетках РМЖ.<bold>Материалы и методы</bold>. В работе использовали клеточные линии РМЖ люминального (MCF-7) и трижды негативного (ТН, MDA-MB-231) подтипов. Влияние CpdA-03 на пролиферацию оценивали прямым подсчетом живых клеток.Распределение клеток по фазам клеточного цикла анализировали с помощью проточной цитофлуориметрии с окрашиванием йодистым пропидием. Для оценки изменения экспрессии GR-зависимых генов под действием CpdA-03 использовали количественную полимеразную цепную реакцию. Способность нового SEGRA индуцировать трансактивацию GR оценивали методом вестерн-блоттинга.Результаты. Выявлено, что CpdA-03 подавляет пролиферацию клеток люминального и трижды негативного РМЖ и при этом не стимулирует ассоциированное с трансактивацией фосфорилирование и транслокацию GR в ядро, а также подавляет экспрессию генов белков, регулирующих межклеточную адгезию и миграцию в клетках трижды негативного подтипа РМЖ.<bold>Заключение</bold>. Наблюдаемое подавление пролиферации клеток, а также способность CpdA-03 регулировать экспрессию ряда GC-индуцируемых генов в клетках трижды негативного РМЖ указывают на актуальность разработки лекарственного препарата на основе молекулы CpdA-03 для применения в комплексной терапии злокачественных новообразований, в том числе РМЖ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>glucocorticoid</kwd><kwd>glucocorticoid receptor</kwd><kwd>metastasis</kwd><kwd>selective glucocorticoid receptor agonist</kwd><kwd>chemotherapy</kwd><kwd>side effect</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>глюкокортикоид</kwd><kwd>глюкокортикоидный рецептор</kwd><kwd>метастазирование</kwd><kwd>селективный агонист глюкокортикоидного рецептора</kwd><kwd>химиотерапия</kwd><kwd>побочный эффект</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bray F., Laversanne M., Sung H. et al. 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