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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">sibmed</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский научный медицинский журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Сибирский научный медицинский журнал</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-2512</issn><issn pub-type="epub">2410-2520</issn><publisher><publisher-name>ИЦиГ СО РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/SSMJ20250310</article-id><article-id custom-type="elpub" pub-id-type="custom">sibmed-2239</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>МЕДИКО-БИОЛОГИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOMEDICINE</subject></subj-group></article-categories><title-group><article-title>Влияние ацетил-амидной формы синтетического пептида HLDF-6 на экспрессию CDH2 и CD24 в опухолевых клетках при раке молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>The effect of the acetyl-amide form of the synthetic peptide HLDF-6 on the CDH2 and CD24 expression in breast cancer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1390-4426</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Архипов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhipov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Алексеевич Архипов, д. б. н.</p><p>630091; Красный пр., 52; 630117;  ул. Тимакова, 2; Новосибирск</p></bio><bio xml:lang="en"><p>Sergey A. Arkhipov, doctor of biological sciences</p><p>630091; Krasny ave., 52; 630117; Timakova st., 2; Novosibirsk</p></bio><email xlink:type="simple">arhipowsergei@yandex.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/0009-0005-3916-0233</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мангазеева</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Mangazeeva</surname><given-names>E. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Екатерина Дмитриевна Мангазеева, </p><p>630091; Красный пр., 52; 630117;  ул. Тимакова, 2; Новосибирск</p></bio><bio xml:lang="en"><p>Ekaterina D. Mangazeeva</p><p>630091; Krasny ave., 52; 630117; Timakova st., 2; Novosibirsk</p></bio><email xlink:type="simple">kate.mogilnaya95@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-0172-0905</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Архипова</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhipova</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валентина Валериевна Архипова</p><p>630091; Красный пр., 52; Новосибирск</p></bio><bio xml:lang="en"><p>Valentina V. Arkhipova</p><p>630091; Krasny ave., 52; Novosibirsk</p></bio><email xlink:type="simple">valia.arkhipova@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3362-8286</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богачук</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogachuk</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Пайзеновна Богачук, к. х. н.</p><p>117997; ул. Миклухо-Маклая, 16/10; Москва</p></bio><bio xml:lang="en"><p>Anna P. Bogachuk, candidate of chemical sciences</p><p>117997; Miklukho-Maklaya sr., 16/10; Moscow</p></bio><email xlink:type="simple">abog2007@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6400-6714</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Липкин</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Lipkin</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерий Михайлович Липкин, д. х. н., чл.-корр. РАН</p><p>117997; ул. Миклухо-Маклая, 16/10; Москва</p></bio><bio xml:lang="en"><p>Valery M. Lipkin, doctor of chemical sciences, corresponding member of RAS</p><p>117997; Miklukho-Maklaya sr., 16/10; Moscow</p></bio><email xlink:type="simple">vmlipkin@ibch.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7180-010X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аутеншлюс</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Autenshlyus</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Исаевич Аутеншлюс, д. б. н., проф.</p><p>630091; Красный пр., 52; 630117;  ул. Тимакова, 2; Новосибирск</p></bio><bio xml:lang="en"><p>Alexander I. Autenshlyus, doctor of biological sciences, professor</p><p>630091; Krasny ave., 52; 630117; Timakova st., 2; Novosibirsk</p></bio><email xlink:type="simple">lpciip@211.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Новосибирский государственный медицинский университет Минздрава России; ФИЦ фундаментальной и трансляционной медицины</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Novosibirsk State Medical University of Minzdrav of Russia; Federal Research Center of Fundamental and Translational Medicine</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Новосибирский государственный медицинский университет Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Novosibirsk State Medical University of Minzdrav of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГНЦ РФ «Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова» РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>13</day><month>07</month><year>2025</year></pub-date><volume>45</volume><issue>3</issue><fpage>97</fpage><lpage>103</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Архипов С.А., Мангазеева Е.Д., Архипова В.В., Богачук А.П., Липкин В.М., Аутеншлюс А.И., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Архипов С.А., Мангазеева Е.Д., Архипова В.В., Богачук А.П., Липкин В.М., Аутеншлюс А.И.</copyright-holder><copyright-holder xml:lang="en">Arkhipov S.A., Mangazeeva E.D., Arkhipova V.V., Bogachuk A.P., Lipkin V.M., Autenshlyus A.I.</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://sibmed.elpub.ru/jour/article/view/2239">https://sibmed.elpub.ru/jour/article/view/2239</self-uri><abstract><p>   Разработка и исследование средств, способных снижать злокачественность опухолей, представляет собой одно из наиболее перспективных направлений в дифференцировочной терапии рака молочной железы (РМЖ). Поскольку полноразмерный фактор дифференцировки HLDF повышает степень дифференцировки клеток инвазивной карциномы молочной железы неспецифического типа, его можно рассматривать в качестве перспективного средства для дифференцировочной терапии РМЖ. Недостатком полноразмерного HLDF является его быстрая биодеградация в организме. Для защиты от гидролиза синтезирована ацетил-амидная форма пептида – HLDF-6. Однако влияние HLDF-6 на дифференцировку клеток РМЖ остается еще не ясным.</p><p>   Цель исследования – изучение влияния ацетил-амидной формы синтетического пептида HLDF-6 на экспрессию кластеров дифференцировки CD24 и CDH2 в клетках РМЖ с учетом различий молекулярно-генетических подтипов опухоли.</p><sec><title>   Материал и методы</title><p>   Материал и методы. Исследование проводили на биоптатах РМЖ 33 пациенток с использованием методов культур тканей и иммуногистохимии.</p></sec><sec><title>   Результаты</title><p>   Результаты. Установлено, что внесение HLDF-6 в культуру приводит к уменьшению доли клеток, экспрессирующих CD24 и CDH2, в образцах РМЖ при люминальных подтипах РМЖ: люминальном А (LA) и люминальном В HER2-негативном (LB). В меньшей степени этот эффект проявлялся при изучении образцов с тройным негативным подтипом РМЖ (TN). Результаты ROC-анализа показали, что молекулы CDH2 и CD24 являются значимыми предикторами для оценки эффекта стимуляции дифференцировки клеток РМЖ различных подтипов.</p></sec><sec><title>   Заключение</title><p>   Заключение. Исследование указывает на перспективность использования ацетил-амидной формы синтетического пептида HLDF-6 для дифференцирующей терапии у пациенток с LA и LB HER2-негативным подтипами РМЖ.</p></sec></abstract><trans-abstract xml:lang="en"><p>   The development and research of drugs capable of reducing the malignancy of tumors is one of the most promising areas in the differentiation therapy of breast cancer (BC). As the full-size differentiation factor (HLDF) significantly contributes to enhancing the differentiation level of invasive breast carcinoma cells of a non-specific type, it can be considered as a promising tool for differentiating therapy of BC. The disadvantage of full-size HLDF is its rapid biodegradation in the body. In this regard, the acetyl-amide form of the peptide (HLDF-6) was synthesized to protect against hydrolysis. However, the effect of this HLDF-6 on breast cancer cell differentiation remains unclear.</p><p>   Aim of the study was to investigate the effect of the acetyl-amide form of the synthetic peptide HLDF-6 on the expression of CD24 and CDH2 clusters of differentiation in BC cells, taking into account differences in molecular genetic subtypes of the tumor.</p><sec><title>   Material and methods</title><p>   Material and methods. The study was conducted on BC biopsies of 33 patients using the methods of tissue cultures and immunohistochemistry.</p></sec><sec><title>   Results</title><p>   Results. It was found that the use of the acetyl-amide form of the synthetic peptide HLDF-6 leads to a decrease in the proportion of cells expressing CD24 and CDH2 in BC samples with luminal subtypes of breast cancer: luminal A (LA) and luminal B HER2-negative (LB). To a lesser extent, this effect was manifested in the study of samples of patients with triple negative subtype of breast cancer (TN). The results of the ROC analysis showed that CDH2 and CD24 molecules are significant predictors for evaluating the effect of stimulating the differentiation of low-grade breast cancer cells within various subtypes of BC.</p></sec><sec><title>   Conclusions</title><p>   Conclusions. The study indicates the prospects of using the acetyl-amide form of the synthetic peptide HLDF-6 for differentiating therapy in patients with LA and LB HER2-negative subtypes of BC.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>молекулярно-генетические подтипы рака молочной железы</kwd><kwd>экспрессия CD24 и CDH2</kwd><kwd>ацетил-амидная форма синтетического пептида HLDF-6</kwd></kwd-group><kwd-group xml:lang="en"><kwd>molecular genetic subtypes of breast cancer</kwd><kwd>expression of CD24 and CDH2</kwd><kwd>acetyl-amide form of synthetic peptide HLDF-6</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания (№ 125031203556-7) с использованием оборудования ЦКП «Протеомный анализ» ФИЦ ФТМ</funding-statement><funding-statement xml:lang="en">The work was carried out within the framework of the state assignment (No. 125031203556-7) using the equipment of the Proteomic Analysis Collective Use Center of FTM</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">Kawamata H., Tachibana M., Fujimori T., Imai Y. 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