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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 Biotherapy</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Biotherapy</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский биотерапевтический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-9784</issn><issn publication-format="electronic">1726-9792</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1518</article-id><article-id pub-id-type="doi">10.17650/1726-9784-2025-24-1-57-64</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL REPORTS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Correlation of CD71 transferrin receptor expression with ICAM-1 adhesion molecule expression by breast cancer cells</article-title><trans-title-group xml:lang="ru"><trans-title>Корреляция экспрессии рецепторов трансферрина CD71 с экспрессией молекул адгезии ICAM-1 клетками рака молочной железы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4412-5019</contrib-id><name-alternatives><name xml:lang="en"><surname>Chulkova</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Чулкова</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Svetlana Vasilievna Chulkova</p><p>24 Kashirskoye Shosse, Moscow115522; 1a Ostrovityanova St., Moscow 117997</p></bio><bio xml:lang="ru"><p>Светлана Васильевна Чулкова</p><p>115522 Москва, Каширское шоссе, 24; 117997 Москва, ул. Островитянова, 1а</p></bio><email>chulkova@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1456-1904</contrib-id><name-alternatives><name xml:lang="en"><surname>Sholokhova</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Шолохова</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Elena N. Sholokhova</p><p>24 Kashirskoye Shosse, Moscow115522</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0995-1801</contrib-id><name-alternatives><name xml:lang="en"><surname>Poddubnaya</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Поддубная</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Irina V. Poddubnaya</p><p>Bld. 1, 2/1 Barrikadnaya St., 125993 Moscow</p></bio><bio xml:lang="ru"><p>125993 Москва, ул. Баррикадная, 2 / 1, стр. 1</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0493-1166</contrib-id><name-alternatives><name xml:lang="en"><surname>Stylidi</surname><given-names>I. S.</given-names></name><name xml:lang="ru"><surname>Стилиди</surname><given-names>И. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Ivan S. Stylidi</p><p>24 Kashirskoye Shosse, Moscow115522; 1a Ostrovityanova St., Moscow 117997</p></bio><bio xml:lang="ru"><p>115522 Москва, Каширское шоссе, 24; 117997 Москва, ул. Островитянова, 1а</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Pirogov Russian National Research Medical University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГAOУ ВО «Российский национальный медицинский университет им. Н.И. Пирогова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Russian Medical Academy of Continuous Professional Education, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">ФГБОУ ДПО «Российская медицинская академия непрерывного профессионального образования» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-04-16" publication-format="electronic"><day>16</day><month>04</month><year>2025</year></pub-date><volume>24</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>57</fpage><lpage>64</lpage><history><date date-type="received" iso-8601-date="2025-04-16"><day>16</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-04-16"><day>16</day><month>04</month><year>2025</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://bioterapevt.abvpress.ru/jour/article/view/1518">https://bioterapevt.abvpress.ru/jour/article/view/1518</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> Transferrin receptor 1 (CD71) plays a vital role in regulating cellular iron import. Cancer cells aberrantly express transferrin receptor 1 (CD71). Expression of CD71 receptors influences many aspects of tumorigenesis. Studying the expression of CD71 in breast cancer cells may reveal the peculiarities of tumor biology in order to select a priority type of drug treatment.</p><p><bold>Aim.</bold> Study the CD71 phenotype of breast cancer cells and evaluate its relationship with adhesion molecules.</p><p><bold>Materials and methods</bold>. We studied tumor samples obtained from breast cancer patients who were treated at the N.N. Blokhin National Medical Research Center of Oncology. On cryostat sections of the tumor, the CD71 phenotype (transfecrrin receptors), CD54 phenotype (intercellular adhesion molecule ICAM-1), and CD29 phenotype (common β-subunit of VLA antigens) were assessed using immunofluorescence. A ZEISS luminescent microscope (AXIOSKOP, Germany) was used. The assessment was performed using a semi-quantitative method: two types of positive reaction were identified according to Hammerling (mosaic and monomomorphic). Using contingency tables (Fisher’s exact test or Pearson’s χ2 test), the correlation between the expression of transferrin receptor molecules and adhesion molecules was studied.</p><p><bold>Results.</bold> The phenotype of breast cancer corresponded to CD71 monomorphic, which was noted in 64.4 % of samples (n = 61). Adhesion molecules were expressed in the majority of samples. β-1 CD29 integrins are presented monomorphically in 51.6 %. Expressing tumor adhesion molecules ICAM-1 in 37 cases showed a monomorphic type of receptor expression, and in 17 cases – mosaic. The expression of CD71 molecules was significantly associated with the expression of CD54 adhesion receptors. This was that CD71 positive tumors more often demonstrated expression of the CD54 receptor and this was expressed in a monomorphic type of reaction, which was 33 % versus 10.5 % (0.293, p = 0.008). With the mosaic CD71 phenotype, the proportion of tumors mosaically expressing CD29 β1-integrin molecules was 80.0 %, while with the CD71 monomorphic phenotype it was 33.3 %, in most cases (52.4 %) tumors with monomorphic expression of CD29 were observed (versus 20.0 % for mosaic phenotype).</p><p><bold>Conclusion. </bold>Breast cancer cells are characterized by an overexpression phenotype of CD71, which is correlated with the expression of CD54 adhesion molecule (ICAM-1). The monomorphic expression of β1-integrin molecules, which occurs in CD71 positive tumors (with a monomorphic type of reaction), indicates that these cells have a higher metastatic potential.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение.</bold> Рецептор трансферрина 1 (CD71) играет жизненно важную роль в регулировании импорта клеточного железа. Клетки рака абберантно экспрессируют рецепторы трансферрина 1 (CD71). Экспрессия рецепторов CD71 влияет на многие аспекты онкогенеза. Изучение экспрессии CD71 клетками рака молочной железы (РМЖ) может помочь раскрыть особенности биологии опухоли с целью выбора приоритетного вида лекарственного лечения.</p><p><bold>Цель исследования</bold> – изучить CD71-фенотип клеток РМЖ и оценить его взаимосвязь с молекулами адгезии. Материалы и методы. Изучены образцы опухоли, полученные от больных РМЖ, которые получили лечение в ФГБУ «НМИЦ онкологии им. Н.Н. Блохина». На криостатных срезах опухоли методом иммунофлюоресценции оценивали CD71-фенотип (рецепторы трансферрина), CD54-фенотип (молекула межклеточной адгезии ICAM-1), CD29-фенотип (общая β-субъединица антигенов VLA). Использовали люминесцентный микроскоп ZEISS (AXIOSKOP, Германия). Оценка выполнена полуколичественным методом: выделяли 2 типа позитивной реакции по Hammerling (мозаичную и мономоморфную). С помощью таблиц сопряженности признаков (точный критерий Фишера или тест χ2 по Пирсону) изучена корреляция экспрессии молекул трансферриновых рецепторов и молекул адгезии.</p><p><bold>Результаты.</bold> Фенотип РМЖ соответствовал CD71 мономорфному, что отмечено в 64,4 % образцов (n = 61). Молекулы адгезии экспрессированы в большинстве образцов. β1-интегрины СD29 представлены мономорфно в 51,6 %. Экспрессирующие молекулы адгезии опухоли ICAM-1 в 37 случаях демонстрировали мономорфный тип экспрессии рецептора, а в 17 случаях – мозаичный. Экспрессия молекул CD71 была достоверно связана с экспрессией рецепторов адгезии CD54. Это заключалось в том, что CD71-позитивные опухоли чаще демонстрировали экспрессию рецептора CD54, и это выражалось в мономорфном типе реакции, что составляло 33 % против 10,5 % (0,293, р = 0,008). При мозаичном CD71-фенотипе доля опухолей, мозаично экспрессирующих молекулы β1-интегринов CD29, составила 80,0 %, тогда как при мономорфном CD71-фенотипе – 33,3 %, в большинстве случаев (52,4 %) наблюдались опухоли с мономорфной экспрессией CD29 (против 20,0 % при мозаичном фенотипе).</p><p><bold>Заключение.</bold> Клетки РМЖ характеризуются гиперэкспрессирующим фенотипом CD71, который находится во взаимосвязи с экспрессией молекул адгезии CD54 (ICAM-1). Мономорфная экспрессия молекул β1-интегринов, которая имеется в CD71-позитивных опухолях (с мономорфным типом реакции), указывает на то, что эти клетки обладают более высоким метастатическим потенциалом.</p></trans-abstract><kwd-group xml:lang="en"><kwd>breast cancer</kwd><kwd>transferrin receptor 1 (CD71)</kwd><kwd>adhesion molecules</kwd><kwd>immunofluorescence</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рак молочной железы</kwd><kwd>трансферриновый рецептор 1 (СD71)</kwd><kwd>молекулы адгезии</kwd><kwd>иммунофлюоресценция</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was performed without external funding</funding-statement><funding-statement xml:lang="ru">Исследование проведено без спонсорской поддержки</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bray F., Ferlay J., Soerjomataram I. et al. 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