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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">vestim</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия медицинских наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Medical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-6023</issn><issn pub-type="epub">2524-2350</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">10.29235/1814-6023-2024-21-2-168-176</article-id><article-id custom-type="elpub" pub-id-type="custom">vestim-969</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>КЛИНИЧЕСКАЯ И ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL AND EXPERIMENTAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Механические свойства клеток рака молочной железы разных молекулярно-биологических подтипов в реакции с антителами против CD109 антигена</article-title><trans-title-group xml:lang="en"><trans-title>Mechanical properties of breast cancer cells of different molecular biological subtypes in reaction with antibodies against CD109 antigen</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6365-3856</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шклярова</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shkliarava</surname><given-names>N. М.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шклярова Анастасия Николаевна – мл. науч. сотрудник</p><p>ул. Федюнинского, 4, 246007, г. Гомель</p></bio><bio xml:lang="en"><p>Nastassia M. Shkliarava ‒ Junior Researcher</p><p>4, Fedyuninski Str., 246007, Gomel</p></bio><email xlink:type="simple">nastenassa@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6812-753X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Челнокова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chelnokova</surname><given-names>I. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Челнокова Ирина Александровна – науч. сотрудник</p><p>ул. Федюнинского, 4, 246007, г. Гомель</p></bio><bio xml:lang="en"><p>Irina A. Chelnokova – Researcher</p><p>4, Fedyuninski Str., 246007, Gomel</p></bio><email xlink:type="simple">irenachelnokova@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0896-5611</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Надыров</surname><given-names>Э. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nadyrov</surname><given-names>Е. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Надыров Эльдар Аркадьевич – канд. мед. наук, доцент</p><p>ул. Ланге, 5, 246000, г. Гомель</p></bio><bio xml:lang="en"><p>Eldar A. Nadyrov – Ph. D. (Med.), Associate Professor</p><p>5, Lange Str., 246000, Gomel</p></bio><email xlink:type="simple">nadyrov19621@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крылов</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krylov</surname><given-names>А. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Крылов Андрей Юрьевич – канд. мед. наук, доцент, заведующий кафедрой</p><p>пр-т Партизанский, 2/5-3, 220033, г. Минск</p></bio><bio xml:lang="en"><p>Andrey Yu. Krylov – Ph. D. (Med.), Associate Professor, Head of the Department</p><p>2/5-3, Partizanskii Ave., 220033, Minsk</p></bio><email xlink:type="simple">andrei.krilou@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6956-9014</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Стародубцева</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Starodubtseva</surname><given-names>М. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Стародубцева Мария Николаевна – д-р биол. наук, доцент</p><p>ул. Ланге, 5, 246000, г. Гомель</p></bio><bio xml:lang="en"><p>Maria N. Starodubtseva ‒ D. Sc. (Biol.), Associate Professor</p><p>4, Fedyuninski Str., 246007, Gomel</p></bio><email xlink:type="simple">lmaria.n.starodubtseva@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт радиобиологии НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Radiobiology of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт радиобиологии НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Radiobiology of the National Academy of Sciences of Belarus, Gomel, Republic of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Гомельский государственный медицинский университет</institution></aff><aff xml:lang="en"><institution>Gomel State Medical University</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Институт повышения квалификации и переподготовки кадров Государственного комитета судебных экспертиз Республики Беларусь</institution></aff><aff xml:lang="en"><institution>State Forensic Examination Committee of the Republic of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>27</day><month>05</month><year>2024</year></pub-date><volume>21</volume><issue>2</issue><fpage>168</fpage><lpage>176</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шклярова А.Н., Челнокова И.А., Надыров Э.А., Крылов Ю.А., Стародубцева М.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Шклярова А.Н., Челнокова И.А., Надыров Э.А., Крылов Ю.А., Стародубцева М.Н.</copyright-holder><copyright-holder xml:lang="en">Shkliarava N.М., Chelnokova I.А., Nadyrov Е.А., Krylov А.Y., Starodubtseva М.N.</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://vestimed.belnauka.by/jour/article/view/969">https://vestimed.belnauka.by/jour/article/view/969</self-uri><abstract><p>Цитоскелет принимает участие в ключевых событиях в клетках при онкогенезе и реакции раковых клеток на терапевтические факторы. Состояние и структура актинового цитоскелета оказывают существенное влияние на механическое поведение раковых клеток, формируя основные черты их механического фенотипа.</p><p>С помощью методов атомно-силовой и флуоресцентной микроскопии нами изучены структура актинового цитоскелета и механические свойства клеток рака молочной железы разных молекулярно-биологических подтипов (гормон-чувствительного, линия ZR-75, и тройного негативного, линия BT-20) при взаимодействии клеток с антигеном CD109 ‒ ингибитором TGF-β-сигнального пути. Установлено, что использование антител для иммобилизации антигена CD109 вызывает значительные изменения пространственной организации актинового цитоскелета, жесткости и адгезионных свойств поверхности клеток обеих клеточных линий. Из-за различий в структуре актинового цитоскелета изменение параметров механических свойств клеток разных молекулярно-биологических подтипов рака и реализация механизмов TGF-β-сигнального пути в них при связывании с антителами против антигена CD109 происходит по-разному. Полученные данные открывают новые перспективы для разработки и оценки эффективности противораковых средств.</p></abstract><trans-abstract xml:lang="en"><p>The cytoskeleton is a participant in key cell events in oncogenesis and the reaction of cancer cells to therapeutic factors. The state and structure of the actin cytoskeleton contributes significantly to the mechanical behavior of cancer cells, forming the main features of their mechanical phenotype.</p><p>In the work, using atomic-force microscopy and fluorescent microscopy, we studied the changes in the structure of the actin cytoskeleton and parameters of the mechanical properties of breast cancer cells of different molecular biological subtypes (hormone-sensitive, line ZR-75, and triple-negative, BT-20 line, subtypes) when cells interact with the CD109 antigen, a TGF-β signaling pathway inhibitor. The use of antibodies for immobilizing the CD109 antigen has been shown to cause significant changes in the spatial organization of the actin cytoskeleton, stiffness and adhesive properties of the cell surface of both cell lines. Because of differences in the structure of the actin cytoskeleton, changes in the mechanical properties of the cells of different molecular biological breast cancer subtypes and the implementation of the TGF-β signaling pathway in these cells when binding to antibodies against the CD109 antigen occur in different ways. The obtained data open new perspectives for the development and evaluation of the effectiveness of anticancer drugs.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>клетки рака молочной железы</kwd><kwd>клеточная линия BT-20</kwd><kwd>клеточная линия ZR-75</kwd><kwd>CD109</kwd><kwd>механические свойства</kwd><kwd>атомно-силовая микроскопия</kwd><kwd>актиновый цитоскелет</kwd></kwd-group><kwd-group xml:lang="en"><kwd>breast cancer cells</kwd><kwd>BT-20 cell line</kwd><kwd>ZR-75 cell line</kwd><kwd>CD109</kwd><kwd>mechanical properties</kwd><kwd>atomic force microscopy</kwd><kwd>actin cytoskeleton</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке БРФФИ (проект № М22-048 от 04.05.2022 г.).</funding-statement><funding-statement xml:lang="en">The work was sponsored by the BRFFR (project No. M22-048 dated of 05.04.2022).</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">World Health Organization. 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