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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">chemicallytech</journal-id><journal-title-group><journal-title xml:lang="en">Fine Chemical Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Тонкие химические технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-6593</issn><issn pub-type="epub">2686-7575</issn><publisher><publisher-name>MIREA – Russian Technological University (RTU MIREA).</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32362/2410-6593-2020-15-2-77-85</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-1599</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="en"><subject>ANALYTICAL METHODS IN CHEMISTRY AND CHEMICAL TECHNOLOGY</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>АНАЛИТИЧЕСКИЕ МЕТОДЫ В ХИМИИ И ХИМИЧЕСКОЙ ТЕХНОЛОГИИ</subject></subj-group></article-categories><title-group><article-title>Development and validation of a method for the determination of the specific activity of recombinant monoclonal antibody eculizumab</article-title><trans-title-group xml:lang="ru"><trans-title>Разработка и валидация метода определения специфической активности рекомбинантного моноклонального антитела экулизумаб</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5542-982X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зыбин</surname><given-names>Д. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zybin</surname><given-names>D. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зыбин Дмитрий Игоревич, старший химик-аналитик </p><p>117246, Москва, Научный пр-д, д. 8, стр. 1</p></bio><bio xml:lang="en"><p>Dmitry I. Zybin, Chief Chemist-Analyst</p><p>8, b. 1, Nauchnyi proezd, Moscow, 117246</p></bio><email xlink:type="simple">zybin@pharmapark.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/0000-0002-5842-7344</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Серегин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Seregin</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Серегин Александр Сергеевич, аспирант</p><p>117545, Москва, 1-й Дорожный пр-д, д. 1</p></bio><bio xml:lang="en"><p>Aleksandr S. Seregin, Postgraduate Student</p><p>1, 1st Dorozhnyi pr., Moscow, 117545</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/0000-0003-0110-8323</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аскретков</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Askretkov</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аскретков Александр Дмитриевич, старший химик-аналитик </p><p>117246, Москва, Научный пр-д, д. 8, стр. 1</p></bio><bio xml:lang="en"><p>Aleksandr D. Askretkov, Chief Chemist-Analyst</p><p>8, b. 1, Nauchnyi proezd, Moscow, 117246</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/0000-0003-4161-5880</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Орлова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Orlova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Орлова Наталья Владимировна, кандидат биологических наук, заведующий испытательной лаборатории</p><p>117545, Москва, 1-й Дорожный пр-д, д. 1</p></bio><bio xml:lang="en"><p>Natalya V. Orlova, Cand. of Sci., Head of Research Laboratory</p><p>1, 1st Dorozhnyi pr., Moscow, 117545</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>Серегин</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Seregin</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Серегин Юрий Александрович, кандидат биологических наук, заместитель директора </p><p>117545, Москва, 1-й Дорожный пр-д, д. 1</p></bio><bio xml:lang="en"><p>Yuri A. Seregin, Cand. of Sci., Deputy Director</p><p>1, 1st Dorozhnyi pr., Moscow, 117545</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/0000-0001-5922-6600</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Простякова</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Prostyakova</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Простякова Анна Игоревна, кандидат химических наук, научный сотрудник лаборатории полимеров для биологии </p><p>Researcher ID H-5123-2016</p><p>117997,  Москва, ул. Миклухо-Маклая, д.16/10</p></bio><bio xml:lang="en"><p>Anna I. Prostyakova, Cand. of Sci., Researcher, Laboratory of Polymers for Biology</p><p>16/10, Miklukho-Maklaya ul., Moscow, 117997</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5485-9297</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Капустин</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapustin</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Капустин Дмитрий Валерьевич, кандидат химических наук, старший научный сотрудник, руководитель лаборатории полимерных сорбентов </p><p>117997,  Москва, ул. Миклухо-Маклая, д.16/10</p></bio><bio xml:lang="en"><p>Dmitry V. Kapustin, Cand. of Sci., Head of Polymeric Sorbent Laboratory</p><p>16/10, Miklukho-Maklaya ul., Moscow, 117997</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ООО «ФАРМАПАРК»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>PHARMAPARK</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>НИЦ «Курчатовский институт – ГосНИИгенетика»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Scientific Center “Kurchatov Institute,” Research Institute for Genetics and Selection of Industrial Microorganisms</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт биоорганической химии им. Академиков М.М. Шемякина и Ю.А. Овчинникова, Российская академия наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>20</day><month>05</month><year>2020</year></pub-date><volume>15</volume><issue>2</issue><fpage>77</fpage><lpage>85</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Zybin D.I., Seregin A.S., Askretkov A.D., Orlova N.V., Seregin Y.A., Prostyakova A.I., Kapustin D.V., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Зыбин Д.И., Серегин А.С., Аскретков А.Д., Орлова Н.В., Серегин Ю.А., Простякова А.И., Капустин Д.В.</copyright-holder><copyright-holder xml:lang="en">Zybin D.I., Seregin A.S., Askretkov A.D., Orlova N.V., Seregin Y.A., Prostyakova A.I., Kapustin D.V.</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.finechem-mirea.ru/jour/article/view/1599">https://www.finechem-mirea.ru/jour/article/view/1599</self-uri><abstract><sec><title>Objectives</title><p>Objectives. Developing reliable and accurate analytical methods is necessary for comparative pharmaceutical analysis using physicochemical, biological (in vitro), preclinical, and clinical trials. The main objective of this study was to develop and validate an in vitro method for determining the specific activity of the recombinant monoclonal antibody eculizumab.</p></sec><sec><title>Methods</title><p>Methods. The method of indirect enzyme immunoassay was used in the study.</p></sec><sec><title>Results</title><p>Results. A method for determining the specific activity of the humanized recombinant monoclonal antibody eculizumab was described and validated for the first time. A comparative evaluation of the specific activity of Soliris® (Alexion Pharmaceuticals Inc., USA), and its biosimilar PRK-001 (Pharmapark, Russia) was performed using the developed method.</p></sec><sec><title>Conclusions</title><p>Conclusions. The similarity of PRK-001 and the original Soliris® in relation to their specific activity, that is, binding to the human complement system C5 protein, was proved. </p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. При подтверждении биоподобности препаратов необходимо создание надежных и точных аналитических методов сравнительных исследований для доказательства схожести препаратов по результатам физико-химических, биологических (in vitro), доклинических и клинических испытаний. Основной задачей настоящей работы является разработка и валидация метода определения специфической активности рекомбинантного моноклонального антитела экулизумаб. </p></sec><sec><title>Методы</title><p>Методы. В работе использован метод непрямого иммуноферментного анализа. </p></sec><sec><title>Результаты</title><p>Результаты. Впервые разработан метод определения специфической активности гуманизированного рекомбинантного моноклонального антитела экулизумаб и проведена его валидация. С использованием разработанного метода проведена сравнительная оценка специфической активности оригинального препарата Солирис® (Alexion Pharmaceuticals Inc., USA) и его биоаналога PRK-001 (ООО «Фармапарк», Россия). </p></sec><sec><title>Выводы</title><p>Выводы. Доказана биоаналогичность препаратов Солирис® и PRK-001 в отношении их специфической активности. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>валидация</kwd><kwd>воспроизведенный лекарственный препарат</kwd><kwd>пароксизмальная ночная гемоглобинурия</kwd><kwd>специфическая активность in vitro</kwd><kwd>иммуноферментный анализ</kwd><kwd>система комплемента</kwd></kwd-group><kwd-group xml:lang="en"><kwd>validation</kwd><kwd>paroxysmal nocturnal hemoglobinuria</kwd><kwd>reproduced drug</kwd><kwd>specific in vitro activity</kwd><kwd>enzyme-linked immunosorbent assay</kwd><kwd>complement system</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This article has been translated into English by M. 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