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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">Colloid Journal</journal-id><journal-title-group><journal-title xml:lang="en">Colloid Journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Коллоидный журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0023-2912</issn><issn publication-format="electronic">3034-543X</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">697456</article-id><article-id pub-id-type="doi">10.7868/S3034543X25050077</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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">LUMINESCENT NANOPARTICLES OF POLYELECTROLYTE COMPLEX OF CHITOSAN WITH CARRAGEENAN AS PERSPECTIVE MULTIFUNCTIONAL VANCOMYCIN DELIVERY SYSTEMS</article-title><trans-title-group xml:lang="ru"><trans-title>ЛЮМИНЕСЦЕНТНЫЕ НАНОЧАСТИЦЫ ПОЛИЭЛЕКТРОЛИТНОГО КОМПЛЕКСА ХИТОЗАНА С КАРРАГИНАНОМ КАК ПЕРСПЕКТИВНЫЕ МНОГОФУНКЦИОНАЛЬНЫЕ СИСТЕМЫ ДОСТАВКИ ВАНКОМИЦИНА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shilova</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Шилова</surname><given-names>С. В.</given-names></name></name-alternatives><email>s_shilova74@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mirgaleev</surname><given-names>G. M.</given-names></name><name xml:lang="ru"><surname>Миргалеев</surname><given-names>Г. М.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sagdeev</surname><given-names>D. O.</given-names></name><name xml:lang="ru"><surname>Сагдеев</surname><given-names>Д. О.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Galyametdinov</surname><given-names>Y. G.</given-names></name><name xml:lang="ru"><surname>Галяметдинов</surname><given-names>Ю. Г.</given-names></name></name-alternatives><email>email@example.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Kazan National Research Technological University</institution></aff><aff><institution xml:lang="ru">Казанский национальный исследовательский технологический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2025</year></pub-date><volume>87</volume><issue>5</issue><issue-title xml:lang="en">VOL 87, NO5 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 87, №5 (2025)</issue-title><fpage>575</fpage><lpage>590</lpage><history><date date-type="received" iso-8601-date="2025-12-02"><day>02</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-09-15"/></permissions><self-uri xlink:href="https://jdigitaldiagnostics.com/0023-2912/article/view/697456">https://jdigitaldiagnostics.com/0023-2912/article/view/697456</self-uri><abstract xml:lang="en"><p>Nanoparticles of a polyelectrolyte complex of chitosan and κ-carrageenan containing core–shell quantum dots of CdS/ZnS were obtained and characterized as potential biocompatible luminescent delivery systems for the antibiotic vancomycin with an encapsulation efficiency of 95–97%. Quantum dots were obtained by a colloidal synthesis method and hydrophilized with mercaptopropionic acid. The effect of vancomycin encapsulated in particles of the polyelectrolyte complex on the luminescent properties of CdS/ZnS quantum dots was studied. The capabilities of the synthesized quantum dots as analytical nanosensors for determine the incorporation and release of vancomycin from the developed carriers based on their luminescence quenching were demonstrated. The binding of vancomycin to albumin as a model of blood protein was studied, the composition of the complex ([vancomycin]: [albumin] = 1.0 : 2.0) and its stability constant (β<sub>κ</sub> = 6.0 ⋅ 10<sup>4</sup> M<sup>−1</sup>) were determined. Analysis of kinetic data on the release of vancomycin from polymer carriers under in vitro conditions into albumin and tris-buffer solutions within the framework of the Korsmeyer–Peppas mathematical model showed that the release of the antibiotic is controlled by both diffusion and relaxation of the polymer matrix.</p></abstract><trans-abstract xml:lang="ru"><p>Получены и охарактеризованы наночастицы полиэлектролитного комплекса хитозана с κ-каррагинаном, содержащие квантовые точки «ядро–оболочка» CdS/ZnS, как модели биосовместимых люминесцентных систем доставки антибиотика ванкомицина с эффективностью инкапсулирования 95–97%. Квантовые точки получены коллоидным методом синтеза и гидрофилизированы меркаптопропионовой кислотой. Изучено влияние ванкомицина, инкапсулированного в частицы полиэлектролитного комплекса, на люминесцентные свойства квантовых точек CdS/ZnS. Продемонстрированы возможности синтезированных квантовых точек в качестве модельных наносенсоров для определения включения и высвобождения ванкомицина из разработанных носителей на основе тушения люминесценции квантовых точек. Исследовано связывание ванкомицина с альбумином как моделью белка крови, определен состав комплекса ([ванкомицин] : [альбумин] = 1.0 : 2.0) и константа его устойчивости (β<sub>κ</sub>= 6.0·10<sup>-4</sup> M<sup>−1</sup>). Анализ кинетических данных высвобождения ванкомицина из полимерных носителей в условиях in vitro в растворы альбумина и трис-буфера в рамках математической модели Корсмейера–Пеппаса, показал, что высвобождение антибиотика контролируется как диффузией, так и релаксацией полимерной матрицы.</p></trans-abstract><kwd-group xml:lang="en"><kwd>chitosan</kwd><kwd>carrageenan</kwd><kwd>polyelectrolyte complex</kwd><kwd>vancomycin</kwd><kwd>quantum dots</kwd><kwd>luminescence quenching</kwd><kwd>drug delivery systems</kwd><kwd>release</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>хитозан</kwd><kwd>каррагинан</kwd><kwd>полиэлектролитный комплекс</kwd><kwd>ванкомицин</kwd><kwd>квантовые точки</kwd><kwd>тушение люминесценции</kwd><kwd>системы доставки лекарственных веществ</kwd><kwd>высвобождение</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. FZSG-2023-0008).</funding-statement><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Минобрнауки РФ (грант № FZSG-2023-0008).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation> Kalia M. Personalized oncology: recent advances and future challenges // Metabolism. 2013. V. 62. S11–S14. https://doi.org/10.1016/j.metabol.2012.08.016</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation> Jain T., Kumar S., Dutta P.K. Teranostics: A way of modern diagnostics and the role of chitosan // J. Mol. Genet. Med. 2015. V. 9. № 1. P. e1000159. https://doi.org/10.4172/1747-0862.1000159</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation> Muthu M.S., Leong D.T., Mei L., Feng S.S. Nanotheranostics application and further development of nanomedicine strategies for advanced theranostics // Theranostics. 2014. V. 4. № 6. 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