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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Doklady Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Doklady Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Российской академии наук. Химия, науки о материалах</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2686-9535</issn><issn publication-format="electronic">3034-5111</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">651913</article-id><article-id pub-id-type="doi">10.31857/S2686953524020044</article-id><article-id pub-id-type="edn">zryssq</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CHEMICAL TECHNOLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Anti-tumor activity of cobalt-containing complexes of potassium and sodium polygalacturonates and pharmacological compositions based on them</article-title><trans-title-group xml:lang="ru"><trans-title>Противоопухолевая активность кобальтсодержащих комплексов полигалактуронатов калия и натрия и фармакологической композиции на их основе</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Minzanova</surname><given-names>S. T.</given-names></name><name xml:lang="ru"><surname>Минзанова</surname><given-names>С. Т.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>minzanova@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chekunkov</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Чекунков</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>minzanova@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Voloshina</surname><given-names>A. D.</given-names></name><name xml:lang="ru"><surname>Волошина</surname><given-names>А. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>minzanova@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mironova</surname><given-names>L. G.</given-names></name><name xml:lang="ru"><surname>Миронова</surname><given-names>Л. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>minzanova@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khabibullina</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Хабибуллина</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>minzanova@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Milyukov</surname><given-names>V. A.</given-names></name><name xml:lang="ru"><surname>Милюков</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>minzanova@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mironov</surname><given-names>V. F.</given-names></name><name xml:lang="ru"><surname>Миронов</surname><given-names>В. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Corresponding Member of the RAS</p></bio><bio xml:lang="ru"><p>член-корреспондент РАН </p></bio><email>minzanova@iopc.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт органической и физической химии им. А.Е. Арбузова ФИЦ Казанский научный центр Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2024</year></pub-date><volume>515</volume><issue>1</issue><issue-title xml:lang="ru"/><fpage>36</fpage><lpage>44</lpage><history><date date-type="received" iso-8601-date="2025-02-02"><day>02</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2686-9535/article/view/651913">https://journals.eco-vector.com/2686-9535/article/view/651913</self-uri><abstract xml:lang="en"><p>Based on the method developed in this study for obtaining water-soluble PGKCo and PGNaCo, which we had previously synthesized, a pharmacological composition (PC) containing simultaneously the macroelements K and Na, as well as the trace element Co, was obtained for the first time. The effect of polygalacturonates and PC on the viability of cells of tumor lines of various origins was studied in vitro. It was shown that the target products have water solubility, low toxicity (LD<sub>50</sub> above 5000 mg kg<sup>–1</sup>) and selective cytotoxic activity against the tumor cell line of human lung carcinoma A549, breast adenocarcinoma MCF-7 and cervical carcinoma M-HeLa. The results obtained confirm the prospects for further research into water-soluble metal complexes and PC based on pectin biopolymers for the treatment of cancer.</p></abstract><trans-abstract xml:lang="ru"><p>На основе разработанного в данном исследовании способа получения водорастворимого комплекса полигалактуроната калия и кобальта (<bold>ПГ</bold><bold>KCo</bold>) и синтезированного нами ранее полигалактуроната натрия и кобальта (<bold>ПГ</bold><bold>NaCo</bold>) впервые получена фармакологическая композиция (<bold>ФК</bold>), содержащая одновременно макроэлементы K и Na и микроэлемент Co. Изучено влияние полигалактуронатов и ФК на жизнеспособность клеток опухолевых линий различного генеза <italic>in vitro</italic>. Показано, что целевые продукты обладают водорастворимостью, малой токсичностью (ЛД<sub>50</sub> выше 5000 мг кг<sup>–1</sup>) и селективной цитотоксической активностью в отношении опухолевой клеточной линии карциномы легкого человека А549, аденокарциномы молочной железы MCF-7 и карциномы шейки матки М-HeLa. Полученные результаты подтверждают перспективность дальнейшего исследования водорастворимых металлокомплексов и ФК на основе пектиновых биополимеров для лечения онкологических заболеваний.</p></trans-abstract><kwd-group xml:lang="en"><kwd>potassium polygalacturonate</kwd><kwd>sodium polygalacturonate</kwd><kwd>complexation</kwd><kwd>cobalt</kwd><kwd>pharmacological composition</kwd><kwd>FTIR spectroscopy</kwd><kwd>antitumor activity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>полигалактуронат калия</kwd><kwd>полигалактуронат натрия</kwd><kwd>комплексообразование</kwd><kwd>кобальт</kwd><kwd>фармакологическая композиция</kwd><kwd>ИК-спектроскопия</kwd><kwd>противоопухолевая активность</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Huang X., Li S., Ding R., Li Y., Li C., Gu R. // Int. J. Biol. Macromol. 2023. V. 252. 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