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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">Russian Journal of Genetics</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0016-6758</issn><issn publication-format="electronic">3034-5103</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">666844</article-id><article-id pub-id-type="doi">10.31857/S0016675823060036</article-id><article-id pub-id-type="edn">SRUZYX</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>МАТЕМАТИЧЕСКИЕ МОДЕЛИ И МЕТОДЫ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Impact of Chromatin 3D-Organization on Promoter–Superenhancer Interactions in Embryonic Stem vs Cancer Cells</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние 3Д-организации хроматина на суперэнхансер–промоторные взаимодействия в эмбриональных стволовых и злокачественных клетках</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Eidelman</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Эйдельман</surname><given-names>Ю. А.</given-names></name></name-alternatives><email>eidel@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Andreev</surname><given-names>S. G.</given-names></name><name xml:lang="ru"><surname>Андреев</surname><given-names>С. Г.</given-names></name></name-alternatives><email>andreev_sg@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Emanuel Institute of Biochemical Physics, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биохимической физики им. Н.М. Эмануэля Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Research Nuclear University “MEPHI”</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский ядерный университет “МИФИ”</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-06-01" publication-format="electronic"><day>01</day><month>06</month><year>2023</year></pub-date><volume>59</volume><issue>6</issue><fpage>676</fpage><lpage>686</lpage><history><date date-type="received" iso-8601-date="2025-02-26"><day>26</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Ю.А. Эйдельман, С.Г. Андреев</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Ю.А. Эйдельман, С.Г. Андреев</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Ю.А. Эйдельман, С.Г. Андреев</copyright-holder><copyright-holder xml:lang="ru">Ю.А. Эйдельман, С.Г. Андреев</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0016-6758/article/view/666844">https://transsyst.ru/0016-6758/article/view/666844</self-uri><abstract xml:lang="en"><p id="idm45181323840656">The interaction of enhancers and superenhancers (SE) with promoters is functionally significant for the regulation of gene expression. Pattern of these interactions plays a key role in various processes, such as differentiation, malignant transformation, etc. In order to quantify the relationship between 3D chromatin organization and promoter–SE contacts, a computational analysis of chromatin conformations near the murine <italic>Nanog</italic> pluripotency gene was performed for normal embryonic stem (mESC) and lymphoma (CH12LX) cells. Using biophysical modeling approach, the following parameters of the promoter–SE interactions were identified: the distribution of distances between the <italic>Nanog</italic> promoter and the SEs, the frequency of contacts with one and several SEs simultaneously. In normal mESC expressing <italic>Nanog</italic>, the frequency of contacts of promoters with SEs is higher than in cancer cells, and complex contacts with two or more SEs are more frequent. The modelling reveals a small subpopulation of cancer cells, where the promoter contacts simultaneously three SEs. The predicted subpopulation of cancer cells with multiple promoter–SE contacts may be predisposed to increased stemness and hypothetically be considered as a reservoir for generation of cancer stem cells.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181323840288">Взаимодействие энхансеров и суперэнхансеров (СЭ) с промотором функционально значимо для регуляции экспрессии генов. Паттерны этих взаимодействий играют ключевую роль в регуляции таких процессов, как дифференцировка, злокачественная трансформация и др. Чтобы получить количественную информацию о взаимосвязи структуры хроматина и экспрессии генов, в настоящей работе был проведен компьютерный анализ конформаций хроматина вблизи гена плюрипотентности <italic>Nanog</italic> мыши, включая контакты СЭ c промотором, в нормальных эмбриональных стволовых (mESC) и в клетках лимфомы (CH12LX). С помощью биофизических методов моделирования идентифицированы параметры суперэнхансер-промоторных взаимодействий – распределения расстояний между промотором <italic>Nanog</italic> и СЭ, частоты контактов с одним и несколькими СЭ одновременно. В нормальных mESC частота контактов промоторов с СЭ выше, чем в злокачественных, и чаще образуются сложные контакты, с двумя и более СЭ. В злокачественных клетках обнаружена малая субпопуляция клеток, где промотор контактирует одновременно с тремя СЭ. Субпопуляции злокачественных клеток с множественными контактами промотор–СЭ могут предрасполагать к проявлению свойств стволовых клеток и гипотетически быть кандидатом на опухолевые стволовые клетки.</p></trans-abstract><kwd-group xml:lang="en"><kwd><italic>Nanog</italic></kwd><kwd>promoter–enhancer interactions</kwd><kwd>Hi-C</kwd><kwd>polymer modeling</kwd><kwd>molecular dynamics</kwd><kwd>chromatin structure.</kwd></kwd-group><kwd-group xml:lang="ru"><kwd><italic>Nanog</italic></kwd><kwd>промотор-энхансерные взаимодействия</kwd><kwd>Hi-C</kwd><kwd>полимерное моделирование</kwd><kwd>молекулярная динамика</kwd><kwd>структура хроматина.</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Hnisz D., Abraham B.J., Lee T.I. et al. Super-enhancers in the control of cell identity and disease // Cell. 2013. V. 155. № 4. 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