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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">oncotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский онкологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian journal of oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-4861</issn><issn pub-type="epub">2312-3168</issn><publisher><publisher-name>Tomsk National Research Medical Сепtеr of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21294/1814-4861-2020-19-4-79-87</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-1532</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>ЛАБОРАТОРНЫЕ И ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LABORATORY AND EXPERIMENTAL STUDIES</subject></subj-group></article-categories><title-group><article-title>ЭКСПРЕССИЯ МАРКЕРОВ CD44 И CD24 В БИОПСИЙНОМ МАТЕРИАЛЕ БОЛЬНЫХ ТРОЙНЫМ НЕГАТИВНЫМ РАКОМ МОЛОЧНОЙ ЖЕЛЕЗЫ ДО ЛЕЧЕНИЯ</article-title><trans-title-group xml:lang="en"><trans-title>EXPRESSION OF CD44 AND CD24 MARKERS IN BIOPSY SAMPLES OF TRIPLE NEGATIVE BREAST CANCER PATIENTS BEFORE TREATMENT</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4754-9784</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнова</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnova</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смирнова Светлана Гурьевна, кандидат биологических наук, старший научный сотрудник отдела радиационной биохимии SPIN-код: 6082-2438. Researcher ID (WOS): T-3533-2017. Author ID (Scopus): 7006472458. </p><p>249031, г. Обнинск, ул. Маршала Жукова, 10</p></bio><bio xml:lang="en"><p>Svetlana G. Smirnova, PhD, Senior Researcher, Department of Radiation BiochemistryResearcher ID (WOS): T-3533-2017. Author ID (Scopus): 7006472458.</p></bio><email xlink:type="simple">sgsmirn@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/0000-0003-3739-9193</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Орлова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Orlova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Орлова Нина Владимировна, кандидат биологических наук, старший научный сотрудник отдела радиационной биохимии. SPIN-код: 7579-9150. Researcher ID (WOS): T-1036-2017. Author ID (Scopus): 7102251319.  </p><p>249031, г. Обнинск, ул. Маршала Жукова, 10</p></bio><bio xml:lang="en"><p>Nina V. Orlova, PhD, Senior Researcher, Department of Radiation BiochemistryResearcher ID (WOS): T-1036-2017. Author ID (Scopus): 7102251319.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9172-9598</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смирнова Ия Алексеевна, доктор медицинских наук, ведущий научный сотрудник отделения новых медицинских технологий с группой лечения заболеваний молочной железы </p><p>SPIN-код: 2727-5334. Researcher ID (WOS): U4570-2018. Author ID (Scopus): 13405418300.</p><p>249031, г. Обнинск, ул. Маршала Жукова, 10</p></bio><bio xml:lang="en"><p>Iya A. Smirnova, MD, DSc, Leading Researcher, Department of New Medical TechnologiesResearcher ID (WOS): U4570-2018. Author ID (Scopus): 13405418300</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Двинских</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Dvinskikh</surname><given-names>N. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Двинских Нина Юрьевна, кандидат медицинских наук, заведующая патолого-анатомическим отделением Author ID (РИНЦ): 149539.</p><p>249031, г. Обнинск, ул. Маршала Жукова, 10</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9893-5143</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Харитонова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Charitonova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Харитонова Алена Андреевна, научный сотрудник отделения новых медицинских технологий с группой лечения заболеваний молочной железы.</p><p>249031, г. Обнинск, ул. Маршала Жукова, 10</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киселева</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kiseleva</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Киселева Марина Викторовна, доктор медицинских наук, заведующая отделением новых медицинских технологий с группой лечения заболеваний молочной железы SPIN-код: 3283-5745. Author ID (Scopus): 56358076600.</p><p>249031, г. Обнинск, ул. Маршала Жукова, 10</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6136-8445</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Замулаева</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zamulaeva</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Замулаева Ирина Александровна, доктор биологических наук, заведующая отделом радиационной биохимии SPIN-код (РИНЦ): 9542-6211. Researcher ID (WOS): R-4906-2016. Author ID (Scopus): 6603693422.</p><p>249031, г. Обнинск, ул. Маршала Жукова, 10</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МРНЦ им. А.Ф. Цыба – филиал ФГБУ «НМИЦ радиологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.F. Tsyb MRRC – branch of the NMRRC of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>31</day><month>08</month><year>2020</year></pub-date><volume>19</volume><issue>4</issue><fpage>79</fpage><lpage>87</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Смирнова С.Г., Орлова Н.В., Смирнова И.А., Двинских Н.Ю., Харитонова А.А., Киселева М.В., Замулаева И.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Смирнова С.Г., Орлова Н.В., Смирнова И.А., Двинских Н.Ю., Харитонова А.А., Киселева М.В., Замулаева И.А.</copyright-holder><copyright-holder xml:lang="en">Smirnova S.G., Orlova N.V., Smirnova I.A., Dvinskikh N.Y., Charitonova A.A., Kiseleva M.V., Zamulaeva I.A.</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://www.siboncoj.ru/jour/article/view/1532">https://www.siboncoj.ru/jour/article/view/1532</self-uri><abstract><p>Индивидуальные особенности экспрессии CD44 и CD24 при раке молочной железы (РМЖ) изучаются во многих лабораториях мира в рамках поиска прогностических маркеров агрессивности опухолевого процесса и эффективности противоопухолевой терапии, что во многом обусловлено участием этих белков в процессах опухолевого роста, метастазирования и формирования популяции опухолевых стволовых клеток (ОСК), которые составляют наиболее резистентную часть злокачественных новообразований к радиационным и многим химиотерапевтическим воздействиям. Особый интерес представляет исследование экспрессии CD44 и CD24 в случае тройного негативного (ТН) РМЖ – наиболее агрессивного среди различных молекулярных подтипов злокачественных новообразований данной локализации. Цель исследования – выяснение возможной взаимосвязи экспрессии маркеров CD44 и CD24 в биопсийном материале больных ТН РМЖ до лечения с клинико-морфологическими характеристиками опухоли. Материал и методы. В исследование включено 67 больных ТН РМЖ I–IV стадии. С помощью проточной цитометрии в биоптатах из первичного опухолевого очага 65 больных и лимфоузлов 6 больных определяли долю клеток с иммунофенотипом ОСК, которые характеризуются наличием на клеточной мембране CD44 при низкой экспрессии CD24 или отсутствии таковой (CD44+/ CD24-/low). Кроме того, оценивали долю клеток со всеми возможными комбинациями экспрессии этих поверхностных белков. Результаты. Клетки с иммунофенотипом ОСК выявлены в первичном очаге всех больных при широкой индивидуальной вариабельности их доли – от 0,4 до 77,0 % (медиана – 10,9 %). Не обнаружено различий доли ОСК в первичном очаге и в лимфоузлах. Ни при одно-, ни при многофакторном анализе не установлено значимой корреляции доли ОСК ни с одним из клинико-морфологических показателей, включая размер и степень дифференцировки опухоли, наличие регионарных и отдаленных метастазов, размер фракции пролиферирующих клеток, оцениваемый по экспрессии Ki67. Также не установлено ассоциации указанных показателей (кроме Ki67) ни с одним из преобладающих в исследованном материале иммунофенотипов. В первичном опухолевом очаге высокая доля Ki67-позитивных клеток была ассоциирована с фенотипом CD44-CD24-. Заключение. Экспрессия маркеров CD44 и CD24 в клетках биопсийного материала больных ТН РМЖ до лечения не коррелирует с клинико-морфологическими характеристиками опухоли, кроме экспрессии Ki67.</p></abstract><trans-abstract xml:lang="en"><p>The role of the expression of CD44 and CD24 in breast cancer (BC) has been explored in many laboratories around the world to identify predictive markers of tumor aggressiveness and patient’s response to anticancer therapy. These proteins participate in the process of tumor growth, metastasis and formation of cancer stem cells (CSCs). The study of CD44 and CD24 expression in triple negative (TN) BC, which is the most aggressive breast cancer subtype, is of particular interest. The aim of this study was to determine the relationship between the expression of CD44 and CD24 markers in biopsy samples of TNBC patients before treatment and clinical/ morphological characteristics of the tumors. Material and Methods. The study group included 67 patients with stage I–IV TNBC. Flow cytometry was used to determine the proportion of cells with CSC immunophenotype (CD44+/CD24-/low) in biopsy samples from the primary tumor of 65 patients and lymph nodes of 6 patients. In addition, the proportion of cells with all possible combinations of expression of these surface proteins was estimated. Results. Cells with CSC immunophenotype were detected in all patients with a wide individual variability of CSC proportion from 0.4 % to 77.0 % (median – 10.9 %). There were no differences in the proportion of CSCs in the primary tumor and lymph nodes. No statistically significant correlation between the proportion of CSCs in the primary tumor and the clinical/morphological parameters, including tumor size and differentiation grade, evidence of regional or distant metastases, tumor, size of the fraction of proliferating cells estimated by Ki67 expression, was found in either single or multivariate analysis. There was also no association of the above parameters (except Ki67) with immunophenotypes. A high proportion of Ki67-positive cells in the primary tumor was associated with the CD44-CD24-phenotype. Conclusion. The expression of CD44 and CD24 in biopsy samples of TNBC before treatment did not correlate with the clinical and morphological characteristics of the tumors, excepting Ki67 expression.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>тройной негативный рак молочной железы</kwd><kwd>опухолевые стволовые клетки</kwd><kwd>CD44</kwd><kwd>CD24</kwd><kwd>проточная цитометрия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>triple negative breast cancer</kwd><kwd>cancer stem cells</kwd><kwd>CD44</kwd><kwd>CD24</kwd><kwd>flow cytometry</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">Honeth G., Bendahl P.O., Ringnér M., Saal L.H., Gruvberger-Saal S.K., Lövgren K., Grabau D., Fernö M., Borg A., Hegardt C. The CD44+/ CD24- phenotype is enriched in basal-like breast tumors. Breast Cancer Res. 2008; 10(3): R53. doi: 10.1186/bcr2108.</mixed-citation><mixed-citation xml:lang="en">Honeth G., Bendahl P.O., Ringnér M., Saal L.H., Gruvberger-Saal S.K., Lövgren K., Grabau D., Fernö M., Borg A., Hegardt C. The CD44+/ CD24- phenotype is enriched in basal-like breast tumors. Breast Cancer Res. 2008; 10(3): R53. doi: 10.1186/bcr2108.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Ma F., Li H., Wang H., Shi X., Fan Y., Ding X., Lin C., Zhan Q., Qian H., Xu B. Enriched CD44(+)/CD24(-) population drives the aggressive phenotypes presented in triple-negative breast cancer (TNBC). Cancer Lett. 2014 Oct 28; 353(2): 153–9. doi: 10.1016/j.canlet.2014.06.022.</mixed-citation><mixed-citation xml:lang="en">Ma F., Li H., Wang H., Shi X., Fan Y., Ding X., Lin C., Zhan Q., Qian H., Xu B. Enriched CD44(+)/CD24(-) population drives the aggressive phenotypes presented in triple-negative breast cancer (TNBC). Cancer Lett. 2014 Oct 28; 353(2): 153–9. doi: 10.1016/j.canlet.2014.06.022.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Shima H., Yamada A., Ishikawa T., Endo I. Are breast cancer stem cells the key to resolving clinical issues in breast cancer therapy? Gland Surg. 2017 Feb; 6(1): 82–88. doi: 10.21037/gs.2016.08.03.</mixed-citation><mixed-citation xml:lang="en">Shima H., Yamada A., Ishikawa T., Endo I. Are breast cancer stem cells the key to resolving clinical issues in breast cancer therapy? Gland Surg. 2017 Feb; 6(1): 82–88. doi: 10.21037/gs.2016.08.03.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Wang H., Wang L., Song Y., Wang S., Huang X., Xuan Q., Kang X., Zhang Q. CD44+/CD24- phenotype predicts a poor prognosis in triplenegative breast cancer. Oncol Lett. 2017 Nov; 14(5): 5890–5898. doi: 10.3892/ol.2017.6959.</mixed-citation><mixed-citation xml:lang="en">Wang H., Wang L., Song Y., Wang S., Huang X., Xuan Q., Kang X., Zhang Q. CD44+/CD24- phenotype predicts a poor prognosis in triplenegative breast cancer. Oncol Lett. 2017 Nov; 14(5): 5890–5898. doi: 10.3892/ol.2017.6959.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Idowu M.O., Kmieciak M., Dumur C., Burton R.S., Grimes M.M., Powers C.N., Manjili M.H. CD44(+)/CD24(-/low) cancer stem/progenitor cells are more abundant in triple-negative invasive breast carcinoma phenotype and are associated with poor outcome. Hum Pathol. 2012 Mar; 43(3): 364–73. doi: 10.1016/j.humpath.2011.05.005.</mixed-citation><mixed-citation xml:lang="en">Idowu M.O., Kmieciak M., Dumur C., Burton R.S., Grimes M.M., Powers C.N., Manjili M.H. CD44(+)/CD24(-/low) cancer stem/progenitor cells are more abundant in triple-negative invasive breast carcinoma phenotype and are associated with poor outcome. Hum Pathol. 2012 Mar; 43(3): 364–73. doi: 10.1016/j.humpath.2011.05.005.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Perrone G., Gaeta L.M., Zagami M., Nasorri F., Coppola R., Borzomati D., Bartolozzi F., Altomare V., Trodella L., Tonini G., Santini D., Cavani A., Muda A.O. In situ identification of CD44+/CD24- cancer cells in primary human breast carcinomas. PLoS One. 2012; 7(9): e43110. doi: 10.1371/journal.pone.0043110.</mixed-citation><mixed-citation xml:lang="en">Perrone G., Gaeta L.M., Zagami M., Nasorri F., Coppola R., Borzomati D., Bartolozzi F., Altomare V., Trodella L., Tonini G., Santini D., Cavani A., Muda A.O. In situ identification of CD44+/CD24- cancer cells in primary human breast carcinomas. PLoS One. 2012; 7(9): e43110. doi: 10.1371/journal.pone.0043110.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Camerlingo R., Ferraro G.A., De Francesco F., Romano M., Nicoletti G., Di Bonito M., Rinaldo M., D'Andrea F., Pirozzi G. The role of CD44+/CD24-/low biomarker for screening, diagnosis and monitoring of breast cancer. Oncol Rep. 2014 Mar; 31(3): 1127–32. doi: 10.3892/or.2013.2943.</mixed-citation><mixed-citation xml:lang="en">Camerlingo R., Ferraro G.A., De Francesco F., Romano M., Nicoletti G., Di Bonito M., Rinaldo M., D'Andrea F., Pirozzi G. The role of CD44+/CD24-/low biomarker for screening, diagnosis and monitoring of breast cancer. Oncol Rep. 2014 Mar; 31(3): 1127–32. doi: 10.3892/or.2013.2943.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Makki J., Myint O., Wynn A.A., Samsudin A.T., John D.V. Expression distribution of cancer stem cells, epithelial to mesenchymal transition, and telomerase activity in breast cancer and their association with clinicopathologic characteristics. Clin Med Insights Pathol. 2015; 8: 1–16. doi: 10.4137/CPath.S19615.</mixed-citation><mixed-citation xml:lang="en">Makki J., Myint O., Wynn A.A., Samsudin A.T., John D.V. Expression distribution of cancer stem cells, epithelial to mesenchymal transition, and telomerase activity in breast cancer and their association with clinicopathologic characteristics. Clin Med Insights Pathol. 2015; 8: 1–16. doi: 10.4137/CPath.S19615.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Abraham B.K., Fritz P., McClellan M., Hauptvogel P., Athelogou M., Brauch H. Prevalence of CD44+/CD24-/low cells in breast cancer may not be associated with clinical outcome but may favor distant metastasis. Clin Cancer Res. 2005 Feb 1; 11(3): 1154–9.</mixed-citation><mixed-citation xml:lang="en">Abraham B.K., Fritz P., McClellan M., Hauptvogel P., Athelogou M., Brauch H. Prevalence of CD44+/CD24-/low cells in breast cancer may not be associated with clinical outcome but may favor distant metastasis. Clin Cancer Res. 2005 Feb 1; 11(3): 1154–9.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Tiezzi D.G., Valejo F.A., Marana H.R., Carrara H.H., Benevides L., Antonio H.M., Sicchieri R.D., Milanezi C.M., Silva J.S., de Andrade J.M. CD44+/CD24- cells and lymph node metastasis in stage I and II invasive ductal carcinoma of the breast. Med Oncol. 2012; 29(3): 1479–85. doi: 10.1007/s12032-011-0014-x.</mixed-citation><mixed-citation xml:lang="en">Tiezzi D.G., Valejo F.A., Marana H.R., Carrara H.H., Benevides L., Antonio H.M., Sicchieri R.D., Milanezi C.M., Silva J.S., de Andrade J.M. CD44+/CD24- cells and lymph node metastasis in stage I and II invasive ductal carcinoma of the breast. Med Oncol. 2012; 29(3): 1479–85. doi: 10.1007/s12032-011-0014-x.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Kai M., Onishi H., Souzaki M., Tanaka H., Kubo M., Tanaka M., Katano M. Semi-quantitative evaluation of CD44(+) /CD24(-) tumor cell distribution in breast cancer tissue using a newly developed fluorescence immunohistochemical staining method. Cancer Sci. 2011; 102(12): 2132–8. doi: 10.1111/j.1349-7006.2011.02063.x.</mixed-citation><mixed-citation xml:lang="en">Kai M., Onishi H., Souzaki M., Tanaka H., Kubo M., Tanaka M., Katano M. Semi-quantitative evaluation of CD44(+) /CD24(-) tumor cell distribution in breast cancer tissue using a newly developed fluorescence immunohistochemical staining method. Cancer Sci. 2011; 102(12): 2132–8. doi: 10.1111/j.1349-7006.2011.02063.x.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Guler G., Balci S., Costinean S., Ussakli C.H., Irkkan C., Suren D., Sari E., Altundag K., Ozisik Y., Jones S., Bacher J., Shapiro C.L., Huebner K. Stem cell-related markers in primary breast cancers and associated metastatic lesions. Mod Pathol. 2012 Jul; 25(7): 949–55. doi: 10.1038/modpathol.2012.37.</mixed-citation><mixed-citation xml:lang="en">Guler G., Balci S., Costinean S., Ussakli C.H., Irkkan C., Suren D., Sari E., Altundag K., Ozisik Y., Jones S., Bacher J., Shapiro C.L., Huebner K. Stem cell-related markers in primary breast cancers and associated metastatic lesions. Mod Pathol. 2012 Jul; 25(7): 949–55. doi: 10.1038/modpathol.2012.37.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Zhong Y., Shen S., Zhou Y., Mao F., Guan J., Lin Y., Xu Y., Sun Q. ALDH1 is a better clinical indicator for relapse of invasive ductal breast cancer than the CD44+/CD24- phenotype. Med Oncol. 2014 Mar; 31(3): 864. doi: 10.1007/s12032-014-0864-0.</mixed-citation><mixed-citation xml:lang="en">Zhong Y., Shen S., Zhou Y., Mao F., Guan J., Lin Y., Xu Y., Sun Q. ALDH1 is a better clinical indicator for relapse of invasive ductal breast cancer than the CD44+/CD24- phenotype. Med Oncol. 2014 Mar; 31(3): 864. doi: 10.1007/s12032-014-0864-0.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Liu C., Luo Y., Liu X., Lu P., Zhao Z. Clinical implications of CD44+/CD24- tumor cell ratio in breast cancer. Cancer Biother Radiopharm. 2012 Jun; 27(5): 324–8. doi: 10.1089/cbr.2011.1155.</mixed-citation><mixed-citation xml:lang="en">Liu C., Luo Y., Liu X., Lu P., Zhao Z. Clinical implications of CD44+/CD24- tumor cell ratio in breast cancer. Cancer Biother Radiopharm. 2012 Jun; 27(5): 324–8. doi: 10.1089/cbr.2011.1155.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Mylona E., Giannopoulou I., Fasomytakis E., Nomikos A., Magkou C., Bakarakos P., Nakopoulou L. The clinicopathologic and prognostic significance of CD44+/CD24(-/low) and CD44-/CD24+ tumor cells in invasive breast carcinomas. Hum Pathol. 2008 Jul; 39(7): 1096–102. doi: 10.1016/j.humpath.2007.12.003.</mixed-citation><mixed-citation xml:lang="en">Mylona E., Giannopoulou I., Fasomytakis E., Nomikos A., Magkou C., Bakarakos P., Nakopoulou L. The clinicopathologic and prognostic significance of CD44+/CD24(-/low) and CD44-/CD24+ tumor cells in invasive breast carcinomas. Hum Pathol. 2008 Jul; 39(7): 1096–102. doi: 10.1016/j.humpath.2007.12.003.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Lü X., Xu K., Lü H., Yin Y., Ma C., Liu Y., Li H., Suo Z. CD44(+)/ CD24(-) cells are transit progenitors and do not determine the molecular subtypes and clinical parameters in breast carcinomas. Ultrastruct Pathol. 2011 Apr; 35(2): 72–8. doi: 10.3109/01913123.2010.544843.</mixed-citation><mixed-citation xml:lang="en">Lü X., Xu K., Lü H., Yin Y., Ma C., Liu Y., Li H., Suo Z. CD44(+)/ CD24(-) cells are transit progenitors and do not determine the molecular subtypes and clinical parameters in breast carcinomas. Ultrastruct Pathol. 2011 Apr; 35(2): 72–8. doi: 10.3109/01913123.2010.544843.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Uchôa Dde M., Graudenz M.S., Callegari-Jacques S.M., Hartmann C.R., Ferreira B.P., Fitarelli-Kiehl M., Edelweiss M.I. Expression of cancer stem cell markers in basal and penta-negative breast carcinomas--a study of a series of triple-negative tumors. Pathol Res Pract. 2014 Jul; 210(7): 432–9. doi: 10.1016/j.prp.2014.03.005.</mixed-citation><mixed-citation xml:lang="en">Uchôa Dde M., Graudenz M.S., Callegari-Jacques S.M., Hartmann C.R., Ferreira B.P., Fitarelli-Kiehl M., Edelweiss M.I. Expression of cancer stem cell markers in basal and penta-negative breast carcinomas--a study of a series of triple-negative tumors. Pathol Res Pract. 2014 Jul; 210(7): 432–9. doi: 10.1016/j.prp.2014.03.005.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Yang F., Cao L., Sun Z., Jin J., Fang H., Zhang W., Guan X. Evaluation of Breast Cancer Stem Cells and Intratumor Stemness Heterogeneity in Triple-negative Breast Cancer as Prognostic Factors. Int J Biol Sci. 2016 Dec 7; 12(12): 1568–1577. doi: 10.7150/ijbs.16874.</mixed-citation><mixed-citation xml:lang="en">Yang F., Cao L., Sun Z., Jin J., Fang H., Zhang W., Guan X. Evaluation of Breast Cancer Stem Cells and Intratumor Stemness Heterogeneity in Triple-negative Breast Cancer as Prognostic Factors. Int J Biol Sci. 2016 Dec 7; 12(12): 1568–1577. doi: 10.7150/ijbs.16874.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Матчук О.Н., Замулаева И.А., Ковалев О.А., Саенко А.С. Механизмы радиорезистентности клеток sp культуры мышиной меланомы В16. Цитология. 2013; 55(8): 553–9.</mixed-citation><mixed-citation xml:lang="en">Matchuk O.N., Zamulaeva I.A., Kovalev O.A., Saenko A.S. Radioresistance mechanisms of side population cells in mouse melanoma cell line B16. Tsitologiia. 2013; 55(8): 553–9. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Chen Y., Song J., Jiang Y., Yu C., Ma Z. Predictive value of CD44 and CD24 for prognosis and chemotherapy response in invasive breast ductal carcinoma. Int J Clin Exp Pathol. 2015; 8(9): 11287–11295.</mixed-citation><mixed-citation xml:lang="en">Chen Y., Song J., Jiang Y., Yu C., Ma Z. Predictive value of CD44 and CD24 for prognosis and chemotherapy response in invasive breast ductal carcinoma. Int J Clin Exp Pathol. 2015; 8(9): 11287–11295.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Kapucuoğlu N., Bozkurt K.K., Başpınar Ş., Koçer M., Eroğlu H.E., Akdeniz R., Akçil M. The clinicopathological and prognostic significance of CD24, CD44, CD133, ALDH1 expressions in invasive ductal carcinoma of the breast: CD44/CD24 expression in breast cancer. Pathol Res Pract. 2015 Oct; 211(10): 740–7. doi: 10.1016/j.prp.2015.05.011.</mixed-citation><mixed-citation xml:lang="en">Kapucuoğlu N., Bozkurt K.K., Başpınar Ş., Koçer M., Eroğlu H.E., Akdeniz R., Akçil M. The clinicopathological and prognostic significance of CD24, CD44, CD133, ALDH1 expressions in invasive ductal carcinoma of the breast: CD44/CD24 expression in breast cancer. Pathol Res Pract. 2015 Oct; 211(10): 740–7. doi: 10.1016/j.prp.2015.05.011.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Collina F., Di Bonito M., Li Bergolis V., De Laurentiis M., Vitagliano C., Cerrone M., Nuzzo F., Cantile M., Botti G. Prognostic Value of Cancer Stem Cells Markers in Triple-Negative Breast Cancer. Biomed Res Int. 2015; 2015: 158682. doi: 10.1155/2015/158682.</mixed-citation><mixed-citation xml:lang="en">Collina F., Di Bonito M., Li Bergolis V., De Laurentiis M., Vitagliano C., Cerrone M., Nuzzo F., Cantile M., Botti G. Prognostic Value of Cancer Stem Cells Markers in Triple-Negative Breast Cancer. Biomed Res Int. 2015; 2015: 158682. doi: 10.1155/2015/158682.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
