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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">medgen</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская генетика</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Genetics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-7998</issn><publisher><publisher-name>Publishing House «Genius Media» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25557/2073-7998.2025.04.74-78</article-id><article-id custom-type="elpub" pub-id-type="custom">medgen-2964</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>КРАТКОЕ СООБЩЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BRIEF REPORT</subject></subj-group></article-categories><title-group><article-title>Аспекты молекулярного патогенеза гипертрофической кардиомиопатии, связанной с вариантами в гене TRIM63</article-title><trans-title-group xml:lang="en"><trans-title>Points of the molecular pathogenesis of hypertrophic cardiomyopathy associated with TRIM63 mutations</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>Клименко</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Klimenko</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197341, г. Санкт-Петербург, ул. Аккуратова, д. 2 </p></bio><bio xml:lang="en"><p>2, Akkuratova st., St. Petersburg, 2197341</p></bio><email xlink:type="simple">bymalvina@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>Андреева</surname><given-names>С. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Andreeva</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197341, г. Санкт-Петербург, ул. Аккуратова, д. 2 </p></bio><bio xml:lang="en"><p>2, Akkuratova st., St. Petersburg, 2197341</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никитина</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitina</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197341, г. Санкт-Петербург, ул. Аккуратова, д. 2 </p></bio><bio xml:lang="en"><p>2, Akkuratova st., St. Petersburg, 2197341</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Костарева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostareva</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197341, г. Санкт-Петербург, ул. Аккуратова, д. 2 </p></bio><bio xml:lang="en"><p>2, Akkuratova st., St. Petersburg, 2197341</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ Национальный медицинский исследовательский центр имени В.А. Алмазова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Almazov National Medical Research Center» of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>07</month><year>2025</year></pub-date><volume>24</volume><issue>4</issue><fpage>74</fpage><lpage>78</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Клименко Е.С., Андреева С.Е., Никитина Е.Г., Костарева А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Клименко Е.С., Андреева С.Е., Никитина Е.Г., Костарева А.А.</copyright-holder><copyright-holder xml:lang="en">Klimenko E.S., Andreeva S.E., Nikitina E.G., Kostareva A.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://www.medgen-journal.ru/jour/article/view/2964">https://www.medgen-journal.ru/jour/article/view/2964</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Белок MuRF1 кодируется геном TRIM63 и является компонентом системы убиквитин-протеасомной деградации белка в кардиомиоцитах. Недавно была открыта аутосомно-рецессивная форма гипертрофический кардиомиопатии (ГКМП), ассоциированная с мутациями в TRIM63, и к настоящему моменту все еще отсутствуют исследования с применением кардиогенно-дифференцированных индуцированных плюрипотентных стволовых клеток (кардиомиоцитов-иПСК) с вариантами в гене TRIM63.</p></sec><sec><title>Цель работы</title><p>Цель работы. Поиск потенциальных звеньев молекулярного патогенеза ГКМП, ассоциированной c вариантами TRIM63, с использованием модели иПСК.</p></sec><sec><title>Пациенты и методы</title><p>Пациенты и методы. Эксперименты проводились на кардиомиоцитах-иПСК, полученных от пациента 19 лет с ГКМП и компаундгетерозиготными вариантами в гене TRIM63 (C39G и S161CfsTer8). Исследование кальциевой динамики проводилось на фоне электрической и химической стимуляций с использованием флуоресцентных зондов Fura-2AM и Fluo-4AM.</p></sec><sec><title>Результаты</title><p>Результаты. При электрической стимуляции кардиомиоцитов-иПСК обнаруживается увеличение длительности кальциевого транзиента на 57% за счет уменьшения скорости высвобождения кальция на 27% по сравнению с донорскими кардиомиоцитами. Достижение максимальной скорости высвобождения наступает достоверно позже в сравнении со здоровым донором. Кроме этого, обнаружено достоверное увеличение амплитуды потока кальция (на 67%) за счет депо-опосредованного входа.</p></sec><sec><title>Выводы</title><p>Выводы. Увеличение времени достижения максимальной скорости высвобождения кальция при TRIM63-ассоциированной ГКМП может свидетельствовать о задержке выхода кальция из саркоплазматического ретикулума, что может быть обусловлено нерегулируемым захватом кальция и его перегрузкой.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. The protein MuRF1 is encoded by the TRIM63 gene and is a component of the ubiquitin-proteasome protein degradation system in cardiomyocytes. Recently, an autosomal recessive form of hypertrophic cardiomyopathy (HCM) has been identified in the context of mutations in TRIM63 [<xref ref-type="bibr" rid="cit1">1</xref>]. Currently, there are no studies utilizing cardiogenically differentiated induced pluripotent stem cellderived cardiomyocytes (iPSC-CMs) that focus on TRIM63 mutations.</p></sec><sec><title>Objective</title><p>Objective. To identify potential nexus in the molecular pathogenesis of cardiomyopathy associated with the TRIM63 mutation.</p></sec><sec><title> Patients and methods</title><p> Patients and methods. Experiments were conducted on cardiomyocytes differentiated from induced pluripotent stem cells (iPSCs) obtained from a 19-year-old patient with HCM due to compound-heterozygous TRIM63 variants (C39G и S161CfsTer8) [<xref ref-type="bibr" rid="cit2">2</xref>]. The study of calcium dynamics was conducted under conditions of electrical and chemical stimulation using the fluorescent probes Fura-2AM and Fluo-4AM.</p></sec><sec><title>Results</title><p>Results. During electrical stimulation of iPSC-derived cardiomyocytes with the TRIM63 mutation, a 57% increase in the calcium transient duration was observed, accompanied by a 27% reduction in calcium release rate compared to donor cardiomyocytes. The peak release rate was reached significantly later than in healthy cells. Additionally, a significant increase in calcium influx amplitude due to storeoperated entry was noted, showing a 67% enhancement.</p></sec><sec><title>Conclusion</title><p>Conclusion. In the context of TRIM63-associated hypertrophic cardiomyopathy, alterations in physiologically important cellular processes were observed. The increase in the time to reach peak calcium release rate may indicate a delay in calcium release from the sarcoplasmic reticulum, as evidenced by the parameter measuring the time to 10% of the peak. It is suggested that the sarcoplasmic reticulum exhibits unregulated calcium uptake, its retention, and consequently, calcium overload.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>MuRF1</kwd><kwd>TRIM63</kwd><kwd>гипертрофическая кардиомиопатия</kwd><kwd>иПСК</kwd><kwd>кальциевая визуализация</kwd><kwd>митохондриальное дыхание</kwd></kwd-group><kwd-group xml:lang="en"><kwd>MuRF1</kwd><kwd>TRIM63</kwd><kwd>hypertrophic cardiomyopathy</kwd><kwd>iPSC</kwd><kwd>calcium imaging</kwd><kwd>electrical stimulation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке РНФ, грант №25-15-00552</funding-statement><funding-statement xml:lang="en">The study was supported by the Russian Science Foundation, grant No. 25-15-00552</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">Salazar-Mendiguchiá J., Ochoa J.P., Palomino-Doza J., et al. 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