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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">ssmu</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень сибирской медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Siberian Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1682-0363</issn><issn pub-type="epub">1819-3684</issn><publisher><publisher-name>Siberian State Medical University, the Ministry of Healthcare of the Russian Federation</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20538/1682-0363-2026-3-50-59</article-id><article-id custom-type="elpub" pub-id-type="custom">ssmu-6601</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL PAPERS</subject></subj-group></article-categories><title-group><article-title>Фенотипическая характеристика молекулярно-биологических вариантов отдельных Her2-положительных циркулирующих опухолевых клеток при люминальных молекулярно-биологических подтипах рака молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>Phenotypic Characterization of Molecular Biological Variants of Individual Her2-positive Circulating Tumor Cells in Luminal Molecular Subtypes of 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/0000-0002-7633-9620</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Перельмутер</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Perelmuter</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Перельмутер Владимир Михайлович – д-р мед. наук, профессор, гл. науч. сотрудник, отделение общей и молекулярной патологии, НИИ онкологии, Томский НИМЦ</p><p>634009, г. Томск, пер. Кооперативный, 5,</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>5 Kooperativny St., 634009 Tomsk</p><p>2 Moskovsky trakt, 634050 Tomsk</p></bio><email xlink:type="simple">pvmngs@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/0009-0009-0266-6707</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Завьялов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zavyalov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Завьялов Александр Васильевич – студент, лечебный факультет</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>2 Moskovsky trakt, 634050 Tomsk</p></bio><email xlink:type="simple">zavyalov.av@ssmu.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/0000-0003-4671-6306</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Григорьева</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigoryeva</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Григорьева Евгения Сергеевна – канд. мед. наук, ст. науч. сотрудник, лаборатория молекулярной терапии рака</p><p>634009, г. Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>5 Kooperativny St., 634009 Tomsk</p></bio><email xlink:type="simple">grigoryeva.es@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0301-8455</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савельева</surname><given-names>О. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Savelieva</surname><given-names>O. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Савельева Ольга Евгеньевна – д-р мед. наук, профессор, кафедра биологической химии, зав. лабораторией «Экспериментальной медицины» Научно-исследовательского центра</p><p>194100, г. Санкт-Петербург, ул. Литовская, 2</p><p> </p></bio><bio xml:lang="en"><p>2 Litovskaya St., 194100, Saint Petersburg</p></bio><email xlink:type="simple">olga_chechina@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2917-8158</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гарбуков</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Garbukov</surname><given-names>E. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гарбуков Евгений Юрьевич – канд. мед. наук, ст. науч. сотрудник, отделение общей онкологии, НИИ онкологии</p><p>634009, г. Томск, пер. Кооперативный, 5</p></bio><bio xml:lang="en"><p>5 Kooperativny St., 634009 Tomsk</p></bio><email xlink:type="simple">maximum9@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8973-8439</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Письменный</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Pismenny</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Письменный Дмитрий Сергеевич – канд. мед. наук, врач клинической лабораторной диагностики, отделение общей и молекулярной патологии, НИИ онкологии, Томский НИМЦ; доцент, кафедра патологической анатомии, СибГМУ</p><p>634009, г. Томск, пер. Кооперативный, 5,</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>5 Kooperativny St., 634009 Tomsk</p><p>2 Moskovsky trakt, 634050 Tomsk</p></bio><email xlink:type="simple">pismenniy.dmitry@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/0000-0001-9429-9813</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Завьялова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zavyalova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Завьялова Марина Викторовна – д-р мед. наук, профессор, вед. науч. сотрудник, НИИ онкологии, Томский НИМЦ; зав. кафедрой патологической анатомии, СибГМУ</p><p>634009, г. Томск, пер. Кооперативный, 5,</p><p>634050, г. Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>5 Kooperativny St., 634009 Tomsk</p><p>2 Moskovsky trakt, 634050 Tomsk</p></bio><email xlink:type="simple">zavyalovamv@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт (НИИ) онкологии, Томский национальный исследовательский медицинский центр (НИМЦ) Российской академии наук;&#13;
Сибирский государственный медицинский университет (СибГМУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Sciences; Siberian State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Сибирский государственный медицинский университет (СибГМУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Научно-исследовательский институт (НИИ) онкологии, Томский национальный исследовательский медицинский центр (НИМЦ) Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cancer Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный педиатрический медицинский университет (СПбГПМУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg State Pediatric Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>01</day><month>10</month><year>2026</year></pub-date><volume>25</volume><issue>3</issue><fpage>50</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Перельмутер В.М., Завьялов А.В., Григорьева Е.С., Савельева О.Е., Гарбуков Е.Ю., Письменный Д.С., Завьялова М.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Перельмутер В.М., Завьялов А.В., Григорьева Е.С., Савельева О.Е., Гарбуков Е.Ю., Письменный Д.С., Завьялова М.В.</copyright-holder><copyright-holder xml:lang="en">Perelmuter V.M., Zavyalov A.V., Grigoryeva E.S., Savelieva O.E., Garbukov E.Y., Pismenny D.S., Zavyalova M.V.</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://bulletin.ssmu.ru/jour/article/view/6601">https://bulletin.ssmu.ru/jour/article/view/6601</self-uri><abstract><sec><title>Цель</title><p>Цель: изучить варианты коэкспрессии маркеров молекулярно-биологического подтипа (МБП) на отдельных циркулирующих опухолевых клетках (ЦОК) при люминальных подтипах рака молочной железы (РМЖ) и их связь с экспрессией маркеров стволовости и эпителиально-мезенхимального перехода.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Исследовалась венозная кровь и биоптаты первичной опухоли от 51 больной РМЖ N1-4N0-3M0 (21 случай с люминальным А, 19 – с люминальным B HER2– и 11 – с люминальным B HER2+ МБП). Методом проточной цитометрии в ЦОК до начала терапии определяли экспрессию CD45, EpCAM, N-/E-кадгерина, CD44, CD24, CD133, Her2neu, ER, PR и Ki67. Статистический анализ выполнен в Statistica 10.0 (p &lt; 0,05).</p></sec><sec><title>Результаты</title><p>Результаты. При люминальных А и B HER2– МБП первичной опухоли выявлена конверсия фенотипа ЦОК с появлением HER2+, чаще ER-отрицательных с различными вариантами коэкспрессии маркеров стволовости. Ключевым практическим результатом является идентификация при люминальных HER2– МБП метастаз-ассоциированного фенотипа ЦОК: CD45–EpCAM+ER–PR–Her2neu+Ki67–, который соответствует классическому HER2+ подтипу на уровне отдельной клетки.</p></sec><sec><title>Заключение</title><p>Заключение. Результаты исследования свидетельствуют о целесообразности определения экспрессии маркеров МБП на одной ЦОК с целью прогнозирования риска гематогенного метастазирования при люминальных А и В HER2– МБП первичной опухоли и оптимизации лечения.</p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Aim</title><p>Aim. To study the co-expression patterns of molecular biological subtype (MBS) markers on individual circulating tumor cells (CTCs) in luminal subtypes of breast cancer (BC) and their association with the expression of stemness and epithelial – mesenchymal transition (EMT) markers.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study analyzed venous blood and primary tumor biopsies from 51 BC patients (N1– 4N0–3M0), including 21 cases with luminal A, 19 cases with luminal B (HER2–), and 11 cases with luminal B (HER2+) MBS. Flow cytometry was used to assess the expression of CD45, EpCAM, N-/E-cadherin, CD44, CD24, CD133, Her2neu, ER, PR, and Ki67 in CTCs before therapy initiation. Statistical analysis was performed using Statistica 10.0 (p &lt; 0.05).</p></sec><sec><title>Results</title><p>Results. In luminal A and B (HER2–) primary tumor MBS, phenotypic conversion of CTCs was observed, characterized by the emergence of HER2+ CTCs, which were often ER-negative and exhibited various coexpression patterns of stemness markers. The key practical finding was the identification of a metastasis-associated CTC phenotype in luminal HER2– MBS: CD45–EpCAM+ER–PR–Her2neu+Ki67–. This phenotype corresponds to the classical HER2+ subtype at the level of a single cell.</p></sec><sec><title>Conclusion</title><p>Conclusion. The study results support the feasibility of determining MBS marker expression on a single CTC for predicting the risk of hematogenous metastasis in luminal A and B (HER2–) primary tumor MBS and for optimizing treatment strategies.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>люминальный молекулярно-биологический подтип</kwd><kwd>циркулирующие опухолевые клетки</kwd><kwd>Her2</kwd></kwd-group><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>luminal molecular biological subtype</kwd><kwd>circulating tumor cells</kwd><kwd>HER2</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Mazzitelli C., Santini D., Corradini A.G., Zamagni C., Trerè D., Montanaro L. et al. Liquid biopsy in the management of breast cancer patients: where are we now and where are we going. Diagnostics (Basel). 2023;13(7):1241. 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