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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">phkinetica</journal-id><journal-title-group><journal-title xml:lang="ru">Фармакокинетика и Фармакодинамика</journal-title><trans-title-group xml:lang="en"><trans-title>Pharmacokinetics and Pharmacodynamics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2587-7836</issn><issn pub-type="epub">2686-8830</issn><publisher><publisher-name>ООО «Издательство ОКИ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37489/2587-7836-2023-2-60-68</article-id><article-id custom-type="elpub" pub-id-type="custom">phkinetica-373</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>МЕТОДЫ ФАРМАКОКИНЕТИЧЕСКИХ ИССЛЕДОВАНИЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METHODS OF PHARMACOKINETIC STUDIES</subject></subj-group></article-categories><title-group><article-title>Методика количественного анализа маркерного субстрата ABCB1-белка фексофенадина в лизате клеток Caco-2</article-title><trans-title-group xml:lang="en"><trans-title>Method for quantitative analysis of the marker substrate ABCB1-protein fexofenadine in Caco-2 cell lysate</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7476-4538</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Копаница</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kopanitsa</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Копаница Мария Андреевна - ассистент кафедры фармацевтической химии</p><p>Рязань</p></bio><bio xml:lang="en"><p>Maria A. Kopanitsa - Assistant of the Department of Pharmaceutical chemistry</p><p>Ryazan</p></bio><email xlink:type="simple">kopanitsa412@yandex.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/0000-0001-5068-1201</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Транова</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Tranova</surname><given-names>Yu. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Транова Юлия Сергеевна - ассистент кафедры фармацевтической химии</p><p>Рязань</p></bio><bio xml:lang="en"><p>Yulia S. Tranova - Assistant of the Department of Pharmaceutical chemistry</p><p>Ryazan</p></bio><email xlink:type="simple">yulyatran@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/0000-0002-5618-7607</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черных</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernykh</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Черных Иван Владимирович - заведующий кафедрой фармацевтической химии, д.б.н., доц.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Ivan V. Chernykh - Head of the Department of Pharmaceutical Chemistry, Dr. Sci. (Biol.), Associate Professor</p><p>Ryazan</p></bio><email xlink:type="simple">ivchernykh88@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/0000-0003-1688-0017</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щулькин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchulkin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щулькин Алексей Владимирович - профессор кафедры фармакологии, д.м.н., доц.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Alexey V. Shchulkin - Professor of the Department of Pharmacology, Dr. Sci. (Med), Associate Professor</p><p>Ryazan</p></bio><email xlink:type="simple">alekseyshulkin@rambler.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/0000-0001-7829-2494</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мыльников</surname><given-names>П. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Mylnikov</surname><given-names>P. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мыльников Павел Юрьевич - ассистент кафедры фармакологии, к.б.н.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Pavel Yu. Mylnikov - Assistant of the Department of Pharmacology, Cand. Sci. (Biol.)</p><p>Ryazan</p></bio><email xlink:type="simple">pavelmylnikov@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/0000-0002-4005-4076</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калинкина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalinkina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Калинкина Оксана Владимировна - старший преподаватель кафедры фармацевтической химии</p><p>Рязань</p></bio><bio xml:lang="en"><p>Oksana V. Kalinkina - Senior Lecturer, Department of Pharmaceutical Chemistry</p><p>Ryazan</p></bio><email xlink:type="simple">kalinkina.oksanka@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/0000-0001-6887-4888</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якушева</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakusheva</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Якушева Елена Николаевна - заведующий кафедрой фармакологии, д.м.н., проф.</p><p>Рязань</p></bio><bio xml:lang="en"><p>Elena N. Yakusheva - Head of the Department of Pharmacology, Dr. Sci. (Med), Professor</p><p>Ryazan</p></bio><email xlink:type="simple">enya.rzn@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Рязанский государственный медицинский университет имени академика И.П. Павлова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ryazan State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>07</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>60</fpage><lpage>68</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Копаница М.А., Транова Ю.С., Черных И.В., Щулькин А.В., Мыльников П.Ю., Калинкина О.В., Якушева Е.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Копаница М.А., Транова Ю.С., Черных И.В., Щулькин А.В., Мыльников П.Ю., Калинкина О.В., Якушева Е.Н.</copyright-holder><copyright-holder xml:lang="en">Kopanitsa M.A., Tranova Y.S., Chernykh I.V., Shchulkin A.V., Mylnikov P.Y., Kalinkina O.V., Yakusheva E.N.</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.pharmacokinetica.ru/jour/article/view/373">https://www.pharmacokinetica.ru/jour/article/view/373</self-uri><abstract><p>Один из способов анализа активности ABCB1-белка — это оценка накопления его субстрата фексофенадина (Ф.) внутри тест-клеток. Цель — разработка и валидация методики количественного анализа Ф. в лизате клеток Caco-2 с помощью ВЭЖХ-МС/МС. Материалы и методы. В качестве матрицы использовался лизат клеток Caco-2. Анализ выполняли на хроматографе «Ultimate 3000» с тройным квадрупольным масс-детектором TSQ Fortis, колонкой UCT Selectra C18 4,6 мм×100 мм 5 мкм в градиентном режиме элюирования. Скорость подвижной фазы — 0,3 мл/мин, объём пробы — 20 мкл, режим ионизации — положительный, внутренний стандарт — амантадин (нг/мл). Пробоподготовка — осаждение белка лизата клеток ацетонитрилом. Методику валидировали по параметрам: селективность, линейность, нижний предел количественного определения (НПКО), правильность, прецизионность, перенос пробы и стабильность образцов. Результаты. На хроматограммах холостого лизата клеток Caco-2 не было пиков со временем удерживания, характерным для Ф. (5,70 мин) и амантадина (3,58 мин). НПКО Ф. составил 0,5 нг/мл. Перенос Ф. не превышал 20 % НПКО, а амантадина — 5 %. По результатам анализа трёх серий градуировочных стандартов (0,5; 1; 1,5; 5; 10; 25; 40; 50 нг/мл) получены уравнения линейной регрессии, коэффициенты корреляции превышали 0,99. Правильность и прецизионность оценивали внутри и между циклами, выполняя анализ растворов Ф. в матрице (0,5; 1,5; 25 и 40 нг/мл) в рамках трёх циклов. Параметры не превышали 20 % для НПКО и 15 % — для остальных точек. Стабильность растворов Ф. (1,5 и 40 нг/мл) в лизате анализировали при хранении при комнатной температуре, после 3-кратной заморозки–разморозки, хранении при -80 °С 60 сут., после пробоподготовки и нахождения в автосемплере 24 ч. Правильность находилась в пределах 15 % от номинальных значений. Выводы. Разработана и валидирована методика количественного определения Ф. в лизате клеток Caco-2 с помощью ВЭЖХ-МС/МС.</p></abstract><trans-abstract xml:lang="en"><p>One way to analyze the activity of the ABCB1 protein is to assess the accumulation of its substrate fexofenadine (F.) inside the test cells. The goal is to develop and validate a method for the quantitative analysis of F. in Caco-2 cell lysate using HPLC-MS/MS. Materials and methods. Caco-2 cell lysate was used as a matrix. The analysis was performed on an "Ultimate 3000" chromatograph with a TSQ Fortis triple quadrupole mass detector, a UCT Selectra C18 4.6 mm*100 mm 5 µm column in a gradient elution mode. The mobile phase rate was 0.3 ml/min, the sample volume was 20 µl, the ionization mode was positive, and the internal standard was amantadine (ng/ml). Sample preparation — precipitation of cell lysate protein with acetonitrile. The method was validated for the following parameters: selectivity, linearity, lower limit of quantitation (LLOQ), correctness, precision, sample transfer and sample stability. Results. Chromatograms of the blank lysate of Caco-2 cells showed no peaks with retention times characteristic of F. (5.70 min) and amantadine (3.58 min). NPKO F. was 0.5 ng/ml. F.'s transfer did not exceed 20% of NPKO, and amantadine — 5%. Based on the results of the analysis of three series of calibration standards (0.5; 1; 1.5; 5; 10; 25; 40; 50 ng/ml), linear regression equations were obtained, the correlation coefficients exceeded 0.99. Accuracy and precision were assessed within and between cycles by analyzing F. solutions in the matrix (0.5; 1.5; 25 and 40 ng/ml) within three cycles. The parameters did not exceed 20% for LLPO and 15% for other points. The stability of F. solutions (1.5 and 40 ng/ml) in the lysate was analyzed during storage at room temperature, after 3-fold freezing-thawing, storage at -80 °C for 60 days, after sample preparation and being in the autosampler for 24 hours. The accuracy was within 15% of the nominal values. Conclusions. A method for the quantitative determination of F. in Caco-2 cell lysate using HPLC-MS/MS has been developed and validated.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ВЭЖХ-МС/МС</kwd><kwd>фексофенадин</kwd><kwd>ABCB1-белок</kwd><kwd>лизат клеток Caco-2</kwd></kwd-group><kwd-group xml:lang="en"><kwd>HPLC-MS/MS</kwd><kwd>fexofenadine</kwd><kwd>ABCB1 protein</kwd><kwd>Caco-2 cell lysate</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа поддержана стипендией Президента Российской Федерации молодым учёным и аспирантам (Конкурс СП-2022) (приказ Минобрнауки России от 20.01.2022 №38).</funding-statement><funding-statement xml:lang="en">The work was supported by the scholarship of the President of the Russian Federation for young scientists and postgraduates (SP-2022 Competition) (Order of the Ministry of Education and Science of the Russian Federation No. 38 dated 20.01.2022).</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">Spudich A, Kilic E, Xing H, et al. 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