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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">biopreparat</journal-id><journal-title-group><journal-title xml:lang="ru">БИОпрепараты. Профилактика, диагностика, лечение</journal-title><trans-title-group xml:lang="en"><trans-title>Biological Products. Prevention, Diagnosis, Treatment</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2221-996X</issn><issn pub-type="epub">2619-1156</issn><publisher><publisher-name>Scientific Centre for Expert Evaluation of Medicinal Products</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30895/2221-996X-2025-639</article-id><article-id custom-type="elpub" pub-id-type="custom">biopreparat-639</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>ТЕМА НОМЕРА: РЕКОМБИНАНТНЫЕ ТЕРАПЕВТИЧЕСКИЕ БЕЛКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ISSUE TOPIC RECOMBINANT THERAPEUTIC PROTEINS</subject></subj-group></article-categories><title-group><article-title>Валидация методики на основе биослойной интерферометрии для определения связывающих (общих) антител к ромиплостиму в сыворотке крови человека</article-title><trans-title-group xml:lang="en"><trans-title>Validation of a biolayer interferometry-based method for the determination of binding (total) antibodies to romiplostim in human serum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-9163-7991</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Агафонова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Agafonova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Агафонова Алена Алексеевна</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Alena A. Agafonova</p><p>14 Vladimirskaya St., Volginsky, Petushinsky District, Vladimir region 601125</p></bio><email xlink:type="simple">aaagafonova@generium.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/0000-0002-9880-1724</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жиляева</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhilyaeva</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жиляева Мария Владимировна</p><p>ул. Маршала Рыбалко, д. 2, корпус 6, вн. тер. г. муниципальный округ Щукино, Москва, 123060</p></bio><bio xml:lang="en"><p>Maria V. Zhilyaeva</p><p>2/6 Marshal Rybalko St., Municipal District Shchukino, Moscow 123060</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9058-1106</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лягоскин</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lyagoskin</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лягоскин Иван Владимирович, канд. биол. наук</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Ivan V. Lyagoskin, Cand. Sci. (Biol.)</p><p>14 Vladimirskaya St., Volginsky, Petushinsky District, Vladimir region 601125</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0682-6113</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казаров</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazarov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Казаров Александр Александрович</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Alexander A. Kazarov</p><p>14 Vladimirskaya St., Volginsky, Petushinsky District, Vladimir region 601125</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-1232-5660</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лисова</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Lisova</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лисова Алена Евгеньевна</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Alena E. Lisova</p><p>14 Vladimirskaya St., Volginsky, Petushinsky District, Vladimir region 601125</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6532-7835</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шукуров</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Shukurov</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шукуров Рахим Рахманкулыевич, канд. биол. наук</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Rakhim R. Shukurov, Cand. Sci. (Biol.)</p><p>14 Vladimirskaya St., Volginsky, Petushinsky District, Vladimir region 601125 </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Акционерное общество «ГЕНЕРИУМ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>GENERIUM JSC</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Общество с ограниченной ответственностью «ГЕНОТЕРА»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>GENOTERA LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>09</month><year>2025</year></pub-date><volume>25</volume><issue>3</issue><fpage>271</fpage><lpage>283</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Агафонова А.А., Жиляева М.В., Лягоскин И.В., Казаров А.А., Лисова А.Е., Шукуров Р.Р., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Агафонова А.А., Жиляева М.В., Лягоскин И.В., Казаров А.А., Лисова А.Е., Шукуров Р.Р.</copyright-holder><copyright-holder xml:lang="en">Agafonova A.A., Zhilyaeva M.V., Lyagoskin I.V., Kazarov A.A., Lisova A.E., Shukurov R.R.</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.biopreparations.ru/jour/article/view/639">https://www.biopreparations.ru/jour/article/view/639</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ. В ряде случаев лечение ромиплостимом пациентов с идиопатической тромбоцитопенической пурпурой сопряжено с образованием антилекарственных антител (АЛА), что часто приводит к развитию серьезных неблагоприятных явлений. Для определения связывающих (общих) АЛА (оАЛА) к ромиплостиму в сыворотке крови человека предлагается методика, основанная на биослойной интерферометрии. С технической точки зрения использующие данный принцип приборы имеют некоторые преимущества (высокая пропускная способность, увеличенные межсервисные интервалы, низкий уровень контаминации оборудования при анализе биообразцов) перед приборами на основе поверхностного плазмонного резонанса, которые применяются для мониторинга оАЛА при проведении клинических исследований оригинального препарата. Для обеспечения воспроизводимости измерений и стандартизации лабораторного этапа клинических исследований иммуногенности биоаналогичного препарата необходима валидация методики.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ.   Установить    ключевые    валидационные    характеристики    методики,    основанной на биослойной   интерферометрии,   для   определения   общих   антилекарственных   антител к ромиплостиму в сыворотке крови человека.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ. Принцип метода заключается в детектировании специфического   взаимодействия   связывающих   антител,   содержащихся   в   исследуемых   образцах, с иммобилизованным на поверхности стрептавидиновых биосенсоров биотинилированным ромиплостимом. Методика состоит из этапа скрининг-теста, в котором определяется наличие или отсутствие оАЛА в образцах; подтверждающего теста для проверки специфичности связывания оАЛА с ромиплостимом; этапа определения титра антител, то есть предельного разведения, при котором оАЛА могут быть обнаружены в образцах. В работе использовались положительные контрольные образцы, содержащие различные концентрации поликлональных кроличьих антител к ромиплостиму. Детектирование белкового комплексообразования проводилось в режиме реального времени с использованием интерферометра Octet® QKe.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ. Значения фактора   биологической   вариабельности   и   предельного   значения незначимого ингибирования составили 1,481 и   34,2%   соответственно.   Подтверждены прецизионность и специфичность методики. Нижний предел детекции оАЛА в отсутствие ромиплостима составил 622 нг/мл. При оценке эффекта матрицы в скрининг-тесте аналитический сигнал 8 из 10 образцов сыворотки крови после добавления оАЛА увеличился более чем в 1,481 раза; в подтверждающем тесте значение показателя «процент ингибирования» превышало 34,2% при анализе 8 из 10 образцов с добавлением оАЛА. Эффект высокой дозы оАЛА в концентрации от 0,8 до 50 мкг/мл отсутствовал. Результаты определения оАЛА в скрининг-тесте были устойчивы к присутствию 1 нг/мл ромиплостима в образцах. Стрептавидиновые биосенсоры с иммобилизованным ромиплостимом  сохраняли  стабильность  после  14  сут  хранения  при  температуре  5±3  °С и не менее 20 циклов регенерации.</p></sec><sec><title>ВЫВОДЫ</title><p>ВЫВОДЫ. Анализ полученных результатов валидации подтвердил пригодность методики на основе биослойной интерферометрии для достоверного и воспроизводимого определения связывающих (общих) антител к ромиплостиму в сыворотке крови человека.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION. Romiplostim treatment of patients with idiopathic thrombocytopenic purpura is associated with formation of anti-drug antibodies (ADA), which often leads to the serious adverse events. A method based on biolayer interferometry is proposed for determination of binding (total) ADA (bADA) to romiplostim in human serum. From a technological point of view, instruments using this principle have some advantages (higher throughput, prolonged service intervals, low level of equipment contamination during analysis of biosamples) over those based on surface plasmon resonance, which are used to monitor bADA levels during clinical trials of the original drug. The method should be validated to ensure reproducibility of measurements and standardise clinical laboratory trials of the immunogenicity of a biosimilar drug.</p></sec><sec><title>AIM</title><p>AIM. To establish the key validation characteristics of a biolayer interferometry-based method for the determination of total anti-drug antibodies to romiplostim in human serum.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS. The method is used to detect the specific interaction of binding antibodies with biotinylated romiplostim immobilised on the streptavidin-coated biosensors. The method includes a screening test to determine bADA presence or absence in the samples; a confirmatory test to check the specificity of bADA binding to romiplostim; determination of antibody titer and maximal dilution, that allows to detect bADA in the samples. Positive control samples containing different concentrations of polyclonal rabbit antibodies to romiplostim were used in the work. Detection of protein complex formation was performed in real time mode using an Octet® QKe interferometer.</p></sec><sec><title>RESULTS</title><p>RESULTS.  The  biological  variability  factor  and  the  limit  of  not  significant  inhibition  were 1.481 and 34.2%, respectively. The precision and specificity of the method were confirmed. The lower limit of bADA detection in the absence of romiplostim was 622 ng/mL. The analytical signal of 8 out of 10 blood serum samples after the addition of bADA increased by more than 1.481 times when assessing the matrix effect in the screening test; the percentage inhibition value exceeded 34.2% when analysing 8 out of 10 samples with the addition of bADA in the confirmatory test. There was no high-dose effect at bADA concentrations from 0.8 to 50 μg/mL. The results of bADA determination in the screening test were robust to the presence of 1 ng/mL romiplostim in the samples. Streptavidin-coated biosensors with immobilised romiplostim maintained stability after 14 days of storage at a temperature of (5±3) °С and at least 20 regeneration cycles.</p></sec><sec><title>CONCLUSIONS</title><p>CONCLUSIONS. Analysis of the validation results obtained confirms the suitability  of  the method for reliable and reproducible determination of binding (total) antibodies to romiplostim in human serum.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>биослойная интерферометрия</kwd><kwd>связывающие антитела к ромиплостиму</kwd><kwd>валидация аналитической методики</kwd><kwd>клиническая разработка</kwd><kwd>биоаналогичный лекарственный препарат</kwd></kwd-group><kwd-group xml:lang="en"><kwd>biolayer interferometry</kwd><kwd>romiplostim binding antibodies</kwd><kwd>assay validation</kwd><kwd>clinical development</kwd><kwd>biosimilar drug</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена за счет финансовой поддержки АО «ГЕНЕРИУМ».</funding-statement><funding-statement xml:lang="en">This study was funded by GENERIUM JSC</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">Меликян АЛ, Егорова ЕК, Пустовая ЕИ, Колошейнова ТИ, Володичева ЕМ, Капорская ТС и др. 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