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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">antibiotics</journal-id><journal-title-group><journal-title xml:lang="ru">Антибиотики и Химиотерапия</journal-title><trans-title-group xml:lang="en"><trans-title>Antibiot Khimioter = Antibiotics and Chemotherapy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0235-2990</issn><publisher><publisher-name>ООО «Издательство ОКИ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37489/0235-2990-202570-7-8-19-27</article-id><article-id custom-type="edn" pub-id-type="custom">XNQQIZ</article-id><article-id custom-type="elpub" pub-id-type="custom">antibiotics-1267</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>ЭКСПЕРИМЕНТАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Experimental Research</subject></subj-group></article-categories><title-group><article-title>Исследование противоопухолевой активности четырёх новых производных фенилпиразолотриазина in vitro при изучении цитотоксичности и цитостатичности на культурах клеток рака молочной железы</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of the Antitumor Activity of Four New Phenylpyrazolotriazine Derivatives In Vitro in a Cytotoxicity and Cytostatic Study on Breast Cancer Cell Cultures</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7545-8567</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хумаири</surname><given-names>А. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Al-Humairi</surname><given-names>Ah. H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ахмед Хамид Хумаири — Phd по специальностям «Фармакология, клиническая фармакология», «Онкология, лучевая терапия», ст. преподаватель кафедры медицины катастроф Института общественного здоровья.</p><p>Волгоград</p></bio><bio xml:lang="en"><p>Ahmed H. Al-Humairi — Lecturer at the Department of Disaster Medicine, Institute of Public Health, VSMU; National Research Tomsk State University of the Ministry of Science and Higher Education of the RF.</p><p>Volgograd</p></bio><email xlink:type="simple">ahmed.h.mneahil@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/0000-0001-6317-7418</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новочадов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Novochadov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерий Валерьевич Новочадов — д. м. н., профессор кафедры биологии и биоинженерии Института естественных наук.</p><p>Волгоград</p></bio><bio xml:lang="en"><p>Valeriy V. Novochadov — D. Sc. in Medicine, Professor at the Department of Biology and Bioengineering, Institute of Natural Sciences.</p><p>Volgograd</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФБУ ВО «Волгоградский государственный медицинский университет»; ФГАОУ ВО «Национальный исследовательский Томский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State Medical University; National Research Tomsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАУ ВО «Волгоградский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>25</day><month>07</month><year>2025</year></pub-date><volume>70</volume><issue>7-8</issue><fpage>19</fpage><lpage>27</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хумаири А.Х., Новочадов В.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Хумаири А.Х., Новочадов В.В.</copyright-holder><copyright-holder xml:lang="en">Al-Humairi A.H., Novochadov V.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://www.antibiotics-chemotherapy.ru/jour/article/view/1267">https://www.antibiotics-chemotherapy.ru/jour/article/view/1267</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. В работе представлены результаты изучения новых производных фенилпиразолотриазина с целью установления возможности их использования в качестве противоопухолевых средств, в том числе для химиотерапии рака молочной железы (РМЖ). Актуальность работы обусловлена широким распространением онкологических заболеваний и высокой смертностью от РМЖ, что диктует необходимость постоянной разработки новых противоопухолевых препаратов.</p></sec><sec><title>Цель исследования</title><p>Цель исследования. Скрининг противоопухолевого потенциала четырёх новых производных фенилпиразолотриазина путём тестирования их цитотоксической (ЦТА) и цитостатической (ЦСА) активности на культурах клеток РМЖ. Материал и методы. Культивирование клеток MCF-7, MDAMB231, BT474 и MCF-10a и определение ЦТА и ЦСА производных фенилпиразолотриазина в концентрациях от 0,25 до 10,0 ммоль/л.</p></sec><sec><title>Результаты</title><p>Результаты. Для культуры MCF-7 максимальное подавление выживаемости клеток (МПВ) препарата сравнения темозоломида было равно 2,44, а концентрация, вызывающая 50% гибель клеток (IC₅₀) — 6,81 мм/л, для других культур показатели ЦТА были несколько ниже. Фенилпиразолотриазин 3 продемонстрировал активность ниже темозоломида, IC₅₀ в большинстве достигнут не был. Это производное было классифицировано как соединение с низкой ЦТА и умеренной ЦСА. Фенилпиразолотриазины 1 и 4 проявили более высокую активность, чем у препарата сравнения, и были классифицированы как соединения с низкой или умеренной ЦТА и умеренной ЦСА. Наконец, фенилпиразолотриазин 2 с МПВ 3,70 и IC₅₀ 1,66 ммоль/л показал максимально высокие значения ЦТА и ЦСА.</p></sec><sec><title>Заключение</title><p>Заключение. По результатам исследования in vitro четыре новых производных фенилпиразолотриазина могут быть расположены по возрастанию совокупности ЦТА и ЦСА в порядке: фенилпиразолотриазин 3 ˂ темозоломид ˂ фенилпиразолотриазин 1, фенилпиразолотриазин 4 ˂ фенилпиразолотриазин 2. Таким образом, 3-(3'-Фенил-4'-метоксикарбонил-изоксазолил)-7-(п-толил)пиразоло[5,1-c][1,2,4]-триазин (фенилпиразолотриазин 2) является безусловным лидером в протестированной серии новых производных имидазотриазина и рекомендуется для дальнейших доклинических исследований.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. The work presents the results of a study of new phenylpyrazolotriazine derivatives in order to establish their potential use as anticancer agents, including for chemotherapy of metastatic breast cancer. The relevance of the work is due to the widespread prevalence of oncological diseases and high breast cancer mortality, which dictate the need for the continuous development of new antitumor drugs.</p></sec><sec><title>The aim of the study</title><p>The aim of the study. Screening of the antitumor potential of four new phenylpyrazolotriazine derivatives by testing their cytotoxic (CTA) and cytostatic (CSA) activity on breast cancer cell cultures.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The base methods used in this study are the culturing of MCF-7, MDAMB231, BT474, and MCF-10a cells, as well as determining the CTA and CSA activity of four new phenylpyrazolotriazine derivatives at concentrations from 0.25 to 10.0 mM/L.</p></sec><sec><title>Results</title><p>Results. For the MCF-7 culture, the maximum cell viability inhibition of the comparison drug temozolomide was equal to 2.44 and the concentration causing 50% cell death (IC₅₀) was 6.81 mM/L; for other cultures, CTA indicators were lower. Phenylpyrazolotriazine 3 demonstrated lower activity compared to temozolomide, IC₅₀ was not achieved in most cases. This derivative has been classified as a compound with low CTA and moderate CSA. Phenylpyrazolotriazines 1 and 4 showed higher activity than the comparison drug and were classified as compounds with low or moderate CTA and moderate CSA. Finally, phenylpyrazolotriazine 2 with a maximum cell viability inhibition of 3.70 and IC₅₀ of 1.66 mM/L showed the highest values of CTA and CSA.</p></sec><sec><title>Conclusion</title><p>Conclusion. According to the results of the in vitro study, four new phenylpyrazolotriazine derivatives can be evaluated in ascending order of the CTA and CSA combination: phenylpyrazolotriazine 3 ˂ temozolomide ˂ phenylpyrazolotriazines 1 and 4 ˂ phenylpyrazolotriazine 2. Thus, 3-(3'-Phenyl-4'methoxycarbonyl-isoxazolyl)-7-(p-tolyl)-pyrazolo[5,1-c][1,2,4]triazine (phenylpyrazolotriazine 2) is the undisputed leader in the tested series of new imidazotriazine derivatives and is recommended for further preclinical trials.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>фенилпиразолотриазин</kwd><kwd>цитотоксическая активность</kwd><kwd>цитостатическая активность</kwd><kwd>рак молочной железы</kwd><kwd>клеточная линия MCF-7</kwd><kwd>клеточная линия MDAMB231</kwd><kwd>клеточная линия BT474</kwd><kwd>клеточная линия MCF-10a</kwd></kwd-group><kwd-group xml:lang="en"><kwd>phenylpyrazolotriazine</kwd><kwd>cytotoxic activity</kwd><kwd>cytostatic activity</kwd><kwd>breast cancer</kwd><kwd>MCF-7 cell line</kwd><kwd>MDAMB231 cell line</kwd><kwd>BT474 cell line</kwd><kwd>MCF-10a cell line</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Благодарности. Aвторы выражают признательность чл.-корр. РАН, проф. В. В. Удуту (заведующему лабораторией физиологии, молекулярной и клинической фармакологии, заместителю директора по научной и лечебной работе НИИ фармакологии и регенеративной медицины им. Е. Д. Гольдберга Томского национального исследовательского медицинского центра Российской академии наук) за полезные обсуждения; также авторы признательны чл.-корр. РАН, проф. Н. В. Чердынцевой (заведующей лаборатории молекулярной онкологии и иммунологии рака, заместителю директора по научной работе НИИ онкологии Томского национального исследовательского медицинского центра Российской академии наук) за предоставленные клеточные линии и материалы и их структурирование для последующего анализа</funding-statement><funding-statement xml:lang="en">The authors express their gratitude to Corresponding Member of the Russian Academy of Sciences, Prof. V. V. Udut (Head of the Laboratory of Physiology, Molecular and Clinical Pharmacology, Deputy Director for Scientific and Therapeutic Work of the E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine of the Tomsk National Research Medical Center of the Russian Academy of Sciences) for useful discussions; the authors are also grateful to Corresponding Member of the Russian Academy of Sciences, Prof. N. V. Cherdyntseva (Head of the Laboratory of Molecular Oncology and Cancer Immunology, Deputy Director for Scientific Work of the Research Institute of Oncology of the Tomsk National Research Medical Center of the Russian Academy of Sciences) for provided cell lines and materials and their structuring for subsequent analysis. The authors declare a lack of funding</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">Caswell-Jin J. L., Sun L. P., Munoz D. et al. Analysis of Breast Cancer Mortality in the US-1975 to 2019. 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