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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-2023-23-2-203-218</article-id><article-id custom-type="elpub" pub-id-type="custom">biopreparat-461</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Разработка и валидация методики пептидного картирования инновационного препарата ингибитора С1 эстеразы</article-title><trans-title-group xml:lang="en"><trans-title>Development and validation of a peptide-mapping procedure for a novel C1 esterase inhibitor</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6178-0050</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зубарева</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zubareva</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зубарева Екатерина Валерьевна</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Ekaterina V. Zubareva</p><p>14 Vladimirskaya St., Volginsky, Petushinskiy District, Vladimir Region 601125</p></bio><email xlink:type="simple">zubareva@ibcgenerium.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/0000-0002-5541-5575</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дегтерев</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Degterev</surname><given-names>M. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дегтерев Максим Борисович</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Maksim B. Degterev</p><p>14 Vladimirskaya St., Volginsky, Petushinskiy District, Vladimir Region 601125</p></bio><email xlink:type="simple">degterev@ibcgenerium.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/0000-0001-6029-4563</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Неронова</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Neronova</surname><given-names>M. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Неронова Мария Юрьевна</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Maria Yu. Neronova</p><p>14 Vladimirskaya St., Volginsky, Petushinskiy District, Vladimir Region 601125</p></bio><email xlink:type="simple">myneronova@ibcgenerium.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/0000-0003-2935-7655</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смолов</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Smolov</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смолов Максим Александрович, канд. хим. наук</p><p>ул. Владимирская, д. 14, пос. Вольгинский, Петушинский район, Владимирская область, 601125</p></bio><bio xml:lang="en"><p>Maksim A. Smolov, Cand. Sci (Chem.) </p><p>14 Vladimirskaya St., Volginsky, Petushinskiy District, Vladimir Region 601125</p></bio><email xlink:type="simple">smolov@ibcgenerium.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/0000-0002-6532-7835</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, Petushinskiy District, Vladimir Region 601125</p></bio><email xlink:type="simple">shukurov@ibcgenerium.ru</email><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><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>05</day><month>06</month><year>2023</year></pub-date><volume>23</volume><issue>2</issue><issue-title>От традиционных биологических к высокотехнологичным лекарственным препаратам: вопросы разработки и применения</issue-title><fpage>203</fpage><lpage>218</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Зубарева Е.В., Дегтерев М.Б., Неронова М.Ю., Смолов М.А., Шукуров Р.Р., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Зубарева Е.В., Дегтерев М.Б., Неронова М.Ю., Смолов М.А., Шукуров Р.Р.</copyright-holder><copyright-holder xml:lang="en">Zubareva E.V., Degterev M.D., Neronova M.Y., Smolov M.A., 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/461">https://www.biopreparations.ru/jour/article/view/461</self-uri><abstract><p>Пептидное картирование является одним из ключевых методов изучения первичной структуры белка. Метод чувствителен даже к малейшим изменениям в ковалентной структуре белка, что позволяет использовать его для проверки подлинности препарата на стадии контроля и мониторинга стабильности производственного процесса.</p><sec><title>Цель работы</title><p>Цель работы: разработка и валидация методики пептидного картирования для подтверждения подлинности инновационного высокогликозилированного рекомбинантного белка — ингибитора С1 эстеразы.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы: рекомбинантный ингибитор С1 эстеразы человека, трипсин. Исследование проводили методом пептидного картирования с использованием обращенно-фазовой высокоэффективной жидкостной хроматографии (ОФ ВЭЖХ) и метода масс-спектрометрии высокого разрешения. Результаты оценивали с применением статистических методов расчета среднего арифметического, стандартного отклонения, коэффициента вариации. Методику валидировали по показателям: специфичность, прецизионность и устойчивость.</p></sec><sec><title>Результаты</title><p>Результаты: апробированы разные варианты пробоподготовки трипсинолизатов, включая дополнительную обработку белка N-гликаназой и полное дегликозилирование. Подобраны условия пробоподготовки и хроматографического разделения пептидов ингибитора С1 эстеразы с получением стабильного профиля пептидной карты. Разработаны и определены реперные пики, а также диапазоны их относительных времен удерживания и относительной площади. Абсолютное время удерживания второго (референтного) пика составило 16,5–16,9 мин. Относительное время удерживания пика 9 — 2,14–2,21, пика 12 — 2,55–2,64, пика 14 — 2,97–3,14, пика 15 — 3,11–3,29 и пика 28 — 6,20–6,63.</p></sec><sec><title>Выводы</title><p>Выводы: разработана методика пептидного картирования ингибитора С1 эстеразы. Оптимизация условий методики позволила сократить время пробоподготовки более чем на 18 ч. Разработанная методика по валидационным характеристикам специфичности, прецизионности и устойчивости соответствовала установленным критериям приемлемости.</p></sec></abstract><trans-abstract xml:lang="en"><p>Peptide mapping is a key method for studying the primary structure of proteins. With its sensitivity to the slightest changes in the covalent structure of a protein, this method is applicable both to medicinal product identification at the control stage and to production process stability monitoring.</p><p>The aim of the study was to develop and validate a peptide-mapping procedure for the identification of a novel highly glycosylated recombinant C1 esterase inhibitor.</p><sec><title>Materials and methods</title><p>Materials and methods. The authors studied recombinant human C1 esterase inhibitor products and trypsin. The study involved peptide mapping using reverse-phase high-performance liquid chromatography and high-resolution mass spectrometry. The following statistics were calculated to evaluate the results: mean, standard deviation, and coefficient of variation. The validation parameters included specificity, precision, and robustness.</p></sec><sec><title>Results</title><p>Results. The authors tested several variants of sample preparation for tryptic digests, including additional N-glycanase treatment and complete deglycosylation, and established the optimal conditions for sample preparation and chromatographic separation of C1 esterase inhibitor peptides to obtain consistent chromatographic profiles (peptide maps). The authors identified characteristic peaks and the corresponding relative retention time and area ranges. The absolute retention time of the second (characteristic) peak was approximately 16.5–16.9 minutes. The relative retention times were 2.14–2.21 for peak 9, 2.55–2.64 for peak 12, 2.97–3.14 for peak 14, 3.11–3.29 for peak 15, and 6.20–6.63 for peak 28.</p></sec><sec><title>Conclusions</title><p>Conclusions. The authors developed a peptide-mapping procedure for C1 esterase inhibitors and optimised the conditions to achieve an over 18-hour reduction in sample preparation time. This procedure met the established acceptance criteria for specificity, precision, and robustness.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>ингибитор С1 эстеразы</kwd><kwd>рекомбинантный белок</kwd><kwd>валидация аналитической методики</kwd><kwd>пептидное картирование</kwd><kwd>ОФ ВЭЖХ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>C1 esterase inhibitor</kwd><kwd>recombinant protein</kwd><kwd>analytical method validation</kwd><kwd>peptide mapping</kwd><kwd>RP-HPLC</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">АО «Генериум» является спонсором разработок инновационного терапевтического белка С1 ингибитора. Работа выполнена на базе лаборатории физико-химических методов Департамента фармацевтического анализа АО «Генериум». Авторы выражают благодарность сотрудникам лаборатории, принимавшим участие в работе.</funding-statement><funding-statement xml:lang="en">Generium JSC sponsored the development of the novel C1 inhibitor therapeutic protein. This study was conducted in the laboratory of physicochemical methods of the Pharmaceutical Analysis Department of Generium JSC. The authors express their gratitude to the colleagues in the laboratory who took part in the study.</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">Lalonde ME, Durocher Y. Therapeutic glycoprotein production in mammalian cells. J Biotechnol. 2017;251:128–40. https://doi.org/10.1016/j.jbiotec.2017.04.028</mixed-citation><mixed-citation xml:lang="en">Lalonde ME, Durocher Y. Therapeutic glycoprotein production in mammalian cells. J Biotechnol. 2017;251:128–40. https://doi.org/10.1016/j.jbiotec.2017.04.028</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Qian C, Niu B, Jimenez R, Wang J, Albarghouthi M. Fully automated peptide mapping multi-attribute method by liquid chromatography-mass spectrometry with robotic liquid handling system. J Pharm Biomed Anal. 2021;198:113988. https://doi.org/10.1016/j.jpba.2021.113988</mixed-citation><mixed-citation xml:lang="en">Qian C, Niu B, Jimenez R, Wang J, Albarghouthi M. Fully automated peptide mapping multi-attribute method by liquid chromatography-mass spectrometry with robotic liquid handling system. J Pharm Biomed Anal. 2021;198:113988. https://doi.org/10.1016/j.jpba.2021.113988</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Bongers J, Cummings JJ, Ebert MB, Federici MM, Gledhill L, Gulati D, et al. Validation of a peptide mapping method for a therapeutic monoclonal antibody: what could we possibly learn about a method we have run 100 times J Pharm Biomed Anal. 2000;21(6):1099–128. https://doi.org/10.1016/s0731-7085(99)00181-8</mixed-citation><mixed-citation xml:lang="en">Bongers J, Cummings JJ, Ebert MB, Federici MM, Gledhill L, Gulati D, et al. Validation of a peptide mapping method for a therapeutic monoclonal antibody: what could we possibly learn about a method we have run 100 times J Pharm Biomed Anal. 2000;21(6):1099–128. https://doi.org/10.1016/s0731-7085(99)00181-8</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Mouchahoir T, Schiel JE. Development of an LC-MS/MS peptide mapping protocol for the NISTmAb. Anal Bioanal Chem. 2018;410(8):2111–26. https://doi.org/10.1007/s00216-018-0848-6</mixed-citation><mixed-citation xml:lang="en">Mouchahoir T, Schiel JE. Development of an LC-MS/MS peptide mapping protocol for the NISTmAb. Anal Bioanal Chem. 2018;410(8):2111–26. https://doi.org/10.1007/s00216-018-0848-6</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Allen D, Baffi R, Bausch J, Bongers J, Costello M, Dougherty J Jr, et al. Validation of peptide mapping for protein identity and genetic stability. Biologics and Biotechnology Section, Pharmaceutical Research and Manufacturers of America. Biologicals. 1996;24(3):255–74. https://doi.org/10.1006/biol.1996.0034</mixed-citation><mixed-citation xml:lang="en">Allen D, Baffi R, Bausch J, Bongers J, Costello M, Dougherty J Jr, et al. Validation of peptide mapping for protein identity and genetic stability. Biologics and Biotechnology Section, Pharmaceutical Research and Manufacturers of America. Biologicals. 1996;24(3):255–74. https://doi.org/10.1006/biol.1996.0034</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Andersen N, Vampola L, Jain R, Alvarez M, Chamberlain S, Hilderbrand A, et al. Rapid UHPLC-HRMS peptide mapping for monoclonal antibodies. American Pharmaceutical review. 2014.</mixed-citation><mixed-citation xml:lang="en">Andersen N, Vampola L, Jain R, Alvarez M, Chamberlain S, Hilderbrand A, et al. Rapid UHPLC-HRMS peptide mapping for monoclonal antibodies. American Pharmaceutical review. 2014.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Xu CF, Wang Y, Bryngelson P, Sosic Z, Zang L. Sequence variant and posttranslational modification analysis during cell line selection via high-throughput peptide mapping. Adv Exp Med Biol. 2019;1140:225–36. https://doi.org/10.1007/978-3-030-15950-4_12</mixed-citation><mixed-citation xml:lang="en">Xu CF, Wang Y, Bryngelson P, Sosic Z, Zang L. Sequence variant and posttranslational modification analysis during cell line selection via high-throughput peptide mapping. Adv Exp Med Biol. 2019;1140:225–36. https://doi.org/10.1007/978-3-030-15950-4_12</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Beinrohr L, Harmat V, Dobó J, Loörincz Z, Gál P, Závodszky P. C1 inhibitor serpin domain structure reveals the likely mechanism of heparin potentiation and conformational disease. J Biol Chem. 2007;282(29):21100–9. https://doi.org/10.1074/jbc.M700841200</mixed-citation><mixed-citation xml:lang="en">Beinrohr L, Harmat V, Dobó J, Loörincz Z, Gál P, Závodszky P. C1 inhibitor serpin domain structure reveals the likely mechanism of heparin potentiation and conformational disease. J Biol Chem. 2007;282(29):21100–9. https://doi.org/10.1074/jbc.M700841200</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Keating GM. Human C1-esterase inhibitor concentrate (Berinert). BioDrugs. 2009;23(6):399–406. https://doi.org/10.2165/11201100-000000000-00000</mixed-citation><mixed-citation xml:lang="en">Keating GM. Human C1-esterase inhibitor concentrate (Berinert). BioDrugs. 2009;23(6):399–406. https://doi.org/10.2165/11201100-000000000-00000</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Ruddy S, Manning MC, Holcomb RE. C1-INH compositions and methods for the prevention and treatment of disorders associated with C1 esterase inhibitor deficiency. Patent of the USA US9616111B2; 2015.</mixed-citation><mixed-citation xml:lang="en">Ruddy S, Manning MC, Holcomb RE. C1-INH compositions and methods for the prevention and treatment of disorders associated with C1 esterase inhibitor deficiency. Patent of the USA US9616111B2; 2015.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Stavenhagen K, Kayili HM, Holst S, Koeleman CAM, Engel R, Wouters D, et al. N- and O-glycosylation analysis of human C1-inhibitor reveals extensive mucin-type O-glycosylation. Mol Cell Proteomics. 2018;17(6):1225–38. https://doi.org/10.1074/mcp.RA117.000240</mixed-citation><mixed-citation xml:lang="en">Stavenhagen K, Kayili HM, Holst S, Koeleman CAM, Engel R, Wouters D, et al. N- and O-glycosylation analysis of human C1-inhibitor reveals extensive mucin-type O-glycosylation. Mol Cell Proteomics. 2018;17(6):1225–38. https://doi.org/10.1074/mcp.RA117.000240</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Устинникова ОБ, Волкова РА, Мовсесянц АА, Меркулов ВА, Бондарев ВП. Рекомендации по аттестации стандартных образцов для подтверждения подлинности структуры рекомбинантных терапевтических белков. БИОпрепараты. Профилактика, диагностика, лечение. 2022;22(2):218–25. https://doi.org/10.30895/2221-996X-2022-22-2-218-225</mixed-citation><mixed-citation xml:lang="en">Ustinnikova OB, Volkova RA, Movsesyants AA, Merkulov VA, Bondarev VP. Recommendations on the certification of reference standards for structure identification of recombinant therapeutic proteins. Biological Products. Prevention, Diagnosis, Treatment. 2022;22(2):218–25 (In Russ.). https://doi.org/10.30895/2221-996X-2022-22-2-218-225</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Ellman GL. Tissue sulfhydryl groups. Arch Biochem Biophys. 1959;82(1):70–7. https://doi.org/10.1016/0003-9861(59)90090-6</mixed-citation><mixed-citation xml:lang="en">Ellman GL. Tissue sulfhydryl groups. Arch Biochem Biophys. 1959;82(1):70–7. https://doi.org/10.1016/0003-9861(59)90090-6</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Riener CK, Kada G, Gruber HJ. Quick measurement of protein sulfhydryls with Ellman’s reagent and with 4,4’-dithiodipyridine. Anal Bioanal Chem. 2002;373(4–5):266–76. https://doi.org/10.1007/s00216-002-1347-2</mixed-citation><mixed-citation xml:lang="en">Riener CK, Kada G, Gruber HJ. Quick measurement of protein sulfhydryls with Ellman’s reagent and with 4,4’-dithiodipyridine. Anal Bioanal Chem. 2002;373(4–5):266–76. https://doi.org/10.1007/s00216-002-1347-2</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Winther JR, Thorpe C. Quantification of thiols and disulfides. Biochim Biophys Acta. 2014;1840(2):838–46. https://doi.org/10.1016/j.bbagen.2013.03.031</mixed-citation><mixed-citation xml:lang="en">Winther JR, Thorpe C. Quantification of thiols and disulfides. Biochim Biophys Acta. 2014;1840(2):838–46. https://doi.org/10.1016/j.bbagen.2013.03.031</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Zubareva E, Degterev M, Kazarov A, Zhiliaeva M, Ulyanova K, Simonov V, et al. Physicochemical and biological characterization of rhC1INH expressed in CHO cells. Pharmaceuticals (Basel). 2021;14(11):1180. https://doi.org/10.3390/ph14111180</mixed-citation><mixed-citation xml:lang="en">Zubareva E, Degterev M, Kazarov A, Zhiliaeva M, Ulyanova K, Simonov V, et al. Physicochemical and biological characterization of rhC1INH expressed in CHO cells. Pharmaceuticals (Basel). 2021;14(11):1180. https://doi.org/10.3390/ph14111180</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Голощапова ЕО, Минеро АС, Рунова ОБ, Устинникова ОБ. Разработка методики пептидного картирования для оценки подлинности рекомбинантного интерферона бета-1b. Биофармацевтический журнал. 2021;13(1):21–6. https://doi.org/10.30906/2073-8099-2021-13-1-21-26</mixed-citation><mixed-citation xml:lang="en">Goloshchapova EO, Minero AS, Rounova OB, Ustinnikova OB. Development of a peptide mapping technique to evaluate the authenticity of recombinant interferon beta-1b. Russian Journal of Biopharmaceuticals. 2021;13(1):21–6 (In Russ.). https://doi.org/10.30906/2073-8099-2021-13-1-21-26</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Устинникова ОБ, Голощапова ЕО, Рунова ОБ, Коротков МГ, Волкова РА. Разработка порядка аттестации стандартного образца метиониновой формы интерферона альфа-2b для подтверждения подлинности методом пептидного картирования. Медицинская иммунология. 2018;20(4):543–50. https://doi.org/10.15789/1563-0625-2018-4-543-550</mixed-citation><mixed-citation xml:lang="en">Ustinnikova OB, Goloshchapova EO, Runova OB, Korotkov MG, Volkova RA. Development of a qualification procedure for methionine form of interferon alfa-2b standard to confirm its authenticity by means of a peptide mapping method. Medical Immunology (Russia). 2018;20(4):543–50 (In Russ.). https://doi.org/10.15789/1563-0625-2018-4-543-550</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
