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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">bioph</journal-id><journal-title-group><journal-title xml:lang="ru">Biomedical Photonics</journal-title><trans-title-group xml:lang="en"><trans-title>Biomedical Photonics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2413-9432</issn><publisher><publisher-name>Non-profit partnership for development of domestic photodynamic therapy and photodiagnosis</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24931/2413-9432-2025-14-3-14-23</article-id><article-id custom-type="elpub" pub-id-type="custom">bioph-730</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Рентген-индуцированная цитотоксичность водных растворов УФ-С рентгенолюминесцентных наночастиц La1−x Prx PO4</article-title><trans-title-group xml:lang="en"><trans-title>Experimental studies X-ray induced cytotoxicity of aqueous colloidal solutions of UV-C luminescent  La1−x Prx PO4 nanoparticles</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шайдулин</surname><given-names>А. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaidulin</surname><given-names>A. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">shatarte@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Орловская</surname><given-names>Е. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Orlovskaya</surname><given-names>E. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Уваров</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Uvarov</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Силаев</surname><given-names>Г. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Silaev</surname><given-names>G. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Скопин</surname><given-names>П. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Skopin</surname><given-names>P. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саранск</p></bio><bio xml:lang="en"><p>Saransk</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гололобова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gololobova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саранск</p></bio><bio xml:lang="en"><p>Saransk</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аль-хадж Аюб</surname><given-names>А.М.М.</given-names></name><name name-style="western" xml:lang="en"><surname>Al-khadj Aioub</surname><given-names>A.M.M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саранск</p></bio><bio xml:lang="en"><p> Saransk</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якобсон</surname><given-names>Д. Э.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakobson</surname><given-names>D. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саранск</p></bio><bio xml:lang="en"><p>Saransk</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернобай</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernobay</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саранск</p></bio><bio xml:lang="en"><p>Saransk</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вайнер</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Vainer</surname><given-names>Y. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Орловский</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Orlovskii</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Махов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Makhov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-7"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт общей физики им. А.М. Прохорова Российской академии наук; Национальный исследовательский университет «Высшая школа экономики»<country>Россия</country></aff><aff xml:lang="en">Prokhorov General Physics Institute of the Russian Academy of Sciences;  Higher School of Economics National Research University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Институт общей физики им. А.М. Прохорова Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Prokhorov General Physics Institute of the Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Национальный исследовательский университет «Высшая школа экономики»; Институт спектроскопии Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Higher School of Economics National Research University;  Institute of Spectroscopy of the Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru">Национальный исследовательский Мордовский государственный университет  им. Н.П. Огарёва<country>Россия</country></aff><aff xml:lang="en">National Research Ogarev Mordovia State University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="en">National Research Ogarev Mordovia State University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru">Институт спектроскопии Российской академии наук<country>Россия</country></aff><aff xml:lang="en">Institute of Spectroscopy of the Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-7"><aff xml:lang="ru">Физический институт им. П.Н. Лебедева Российской академии наук<country>Россия</country></aff><aff xml:lang="en">P.N. Lebedev Physical Institute of the Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>17</day><month>10</month><year>2025</year></pub-date><volume>14</volume><issue>3</issue><fpage>14</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шайдулин А.Т., Орловская Е.О., Уваров О.В., Силаев Г.О., Скопин П.И., Гололобова И.А., Аль-хадж Аюб А., Якобсон Д.Э., Чернобай Р.А., Вайнер Ю.Г., Орловский Ю.В., Махов В.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шайдулин А.Т., Орловская Е.О., Уваров О.В., Силаев Г.О., Скопин П.И., Гололобова И.А., Аль-хадж Аюб А., Якобсон Д.Э., Чернобай Р.А., Вайнер Ю.Г., Орловский Ю.В., Махов В.Н.</copyright-holder><copyright-holder xml:lang="en">Shaidulin A.T., Orlovskaya E.O., Uvarov O.V., Silaev G.O., Skopin P.I., Gololobova I.A., Al-khadj Aioub A., Yakobson D.E., Chernobay R.A., Vainer Y.G., Orlovskii Y.V., Makhov V.N.</copyright-holder><license 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.pdt-journal.com/jour/article/view/730">https://www.pdt-journal.com/jour/article/view/730</self-uri><abstract><p>Использование УФ-С излучения является отдельно стоящим терапевтическим воздействием на раковые опухоли, которое способно вызывать клеточный апоптоз и не зависит от фотосенсибилизатора или концентрации кислорода в опухоли. Для исследования потенциала использования наночастиц, способных к рентгенолюминесценции в УФ-С области, в качестве основы для создания препарата, направленного на улучшение лучевой терапии, гидротермально-микроволновым методом были приготовлены два коллоидных раствора наночастиц моноклинного La1–x Prx PO4 с морфологиями крупных нановолокон (х = 0,02) или мелких наностержней (х = 0,05). Сравнение рентгенолюминесценции в УФ-С области коллоиных растворов показало в 6,3 раз превосходящую яркость для более крупных наночастиц. Собственная и рентген-индуцированная цитотоксичность коллоидных растворов на культуре опухолевых клеток Mh22a и культуре клеток L929 были исследованы при помощи МТТ анализа и флуоресцентной микроскопии. Флуоресцентная микроскопия выявила различия в форме клеточной смерти (апоптоз или некроз) после инкубации клеток с образцами нановолокон или наностержней. Облучение рентгеном проводили в двух режимах с различным напряжением на рентгеновской трубке (50 или 80 кВ) и с одинаковой дозой облучения (8 Гр). Группы клеток, инкубированные с крупными наночастицами и облученные в режиме 50 кВ, показали более высокие показатели гибели. Согласно МТТ анализу, облучение клеток, инкубированных с нановолокнами La0.98 Pr0.02 PO4 с концентрацией 2 мг/мл, снизило выживаемость на 20-30%, и одновременно по данным флуоресцентной микроскопии, количество клеток, находящихся в апоптозе, превысило число клеток погибших путем некроза и достигло 50-70%. Количественный анализ относительного числа погибших клеток, исследованных на влияние рентген-индуцированной цитотоксичности наностержей La0.95 Pr0.05 PO4 , не выявил достоверных результатов по снижению жизнеспособности клеток.</p></abstract><trans-abstract xml:lang="en"><p>The use of UV-C radiation for the treatment of tumors is a stand-alone therapeutic intervention that can induce cellular apoptosis and is independent of photosensitizer or oxygen concentration in tumor. To explore the potential of using X-ray excited UV-C luminescent nanoparticles as a basis for creating drugs to improve radiation therapy, two colloidal solutions of monoclinic La1–x Prx PO4 nanoparticles with different morphologies of large nanofibers (x = 0.02) or small nanorods (x = 0.05) were prepared using a microwave-assisted hydrothermal method. Comparison of X-ray excited UV-C luminescence of colloidal solutions showed approximately 6.3 times higher brightness for larger nanoparticles. The intrinsic and X-ray-induced cytotoxicity of the prepared colloidal solutions on the viability of cancerous Mh22a and healthy L929 cell cultures were studied using MTT assay and fluorescence microscopy. Fluorescence microscopy showed differences in the types of cell death (apoptosis or necrosis) after incubation with nanofiber or nanorod samples. X-ray irradiation was performed in two modes with different voltage on the X-ray tube (50 and 80 kV) and the same radiation dose (8 Gy). Groups of cells incubated with nanoparticles and irradiated with 50 kV mode showed greater death rate. According to MTT analysis, irradiation of cells incubated with La0.98 Pr0.02 PO4 nanofibers at a concentration of 2 mg/mL reduced survival by 20-30%, and at the same time, according to fluorescence microscopy data, the number of cells undergoing apoptosis exceeded the number of cells that died through necrosis and reached 50-70%. Quantitative analysis of the relative number of dead cells caused by X-ray-induced cytotoxicity of La0.95 Pr0.05 PO4 nanorods did not reveal statistically significant results in reducing cell viability.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>УФ-С люминесценция</kwd><kwd>рентгенолюминесценция</kwd><kwd>водный коллоидный раствор нанокристаллов</kwd><kwd>рентген-индуциро ванная цитотоксичность</kwd><kwd>in vitro</kwd><kwd>флуоресцентная микроскопия</kwd><kwd>апоптоз</kwd></kwd-group><kwd-group xml:lang="en"><kwd>UV-C luminescence</kwd><kwd>X-ray excited optical luminescence</kwd><kwd>aqueous colloidal solution of nanocrystals</kwd><kwd>X-ray induced cytotoxicity</kwd><kwd>in vitro</kwd><kwd>fluorescence microscopy</kwd><kwd>apoptosis</kwd></kwd-group><funding-group xml:lang="en"><funding-statement>V.Y.G., S.G.O., O.E.O. and S.A.T. are grateful for a support  of the Russian Science Foundation (grant number 22-22- 00998 for small scientific groups). Authors are grateful to  Nikolay Pyatayev for organizing the in vitro studies. G.I.A.,  A.-k.A.A.M., C.R.A. and Y.D.E. are grateful to Nikolay A.  Pyatayev and Mikhail N. Zharkov for their help in writing  the text of the in vitro results analysis and formulating the  conclusions to them.</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">Miwa S., Yano S., Hiroshima Y., Tome Y., Uehara F., Mii S., Efimova E.V., Kimura H., Hayashi K., Tsuchiya H., Hoffman R.M. Imaging UVC-induced DNA damage response in models of minimal cancer // J. Cell. Biochem. – 2013. – Vol. 114(11). – P. 2493-2499.</mixed-citation><mixed-citation xml:lang="en">Miwa S., Yano S., Hiroshima Y., Tome Y., Uehara F., Mii S., Efimova E.V., Kimura H., Hayashi K., Tsuchiya H., Hoffman R.M. Imaging UVC-induced DNA damage response in models of minimal cancer // J. Cell. 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