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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-710</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>СРАВНЕНИЕ СТРУКТУРЫ ВЫСШЕГО ПОРЯДКА ПРЕДЛАГАЕМОГО БИОАНАЛОГА И ИННОВАЦИОННОГО БИОТЕРАПЕВТИЧЕСКОГО ПРЕПАРАТА ТРАСТУЗУМАБА С ИСПОЛЬЗОВАНИЕМ КРУГОВОГО ДИХРОИЗМА В СОЧЕТАНИИ СО СТАТИСТИЧЕСКИМ АНАЛИЗОМ</article-title><trans-title-group xml:lang="en"><trans-title>HIGHER ORDER STRUCTURE COMPARISON OF A PROPOSED BIOSIMILAR AND THE INNOVATOR BIOTHERAPEUTIC TRASTUZUMAB USING CIRCULAR DICHROISM COUPLED WITH STATISTICAL ANALYSIS</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>Fang</surname><given-names>J.</given-names></name><name name-style="western" xml:lang="en"><surname>Fang</surname><given-names>Junjian</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пекин 100039</p></bio><bio xml:lang="en"><p>Beijing 100039</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Li</surname><given-names>H.</given-names></name><name name-style="western" xml:lang="en"><surname>Li</surname><given-names>Hui</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пекин 100039</p></bio><bio xml:lang="en"><p>Beijing 100039</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Wu</surname><given-names>Sh.</given-names></name><name name-style="western" xml:lang="en"><surname>Wu</surname><given-names>Shengming</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пекин 100039</p></bio><bio xml:lang="en"><p>Beijing 100039</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Dong</surname><given-names>F.</given-names></name><name name-style="western" xml:lang="en"><surname>Dong</surname><given-names>Fangting</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пекин 100039</p></bio><bio xml:lang="en"><p>Beijing 100039</p></bio><email xlink:type="simple">dft@proteomics.cn</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный центр биомедицинского анализа</institution></aff><aff xml:lang="en"><institution>National Center of Biomedical Analysis</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>02</day><month>11</month><year>2020</year></pub-date><volume>87</volume><issue>5</issue><elocation-id>850(1)-850(8)</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Fang J., Li H., Wu S., Dong F., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Fang J., Li H., Wu S., Dong F.</copyright-holder><copyright-holder xml:lang="en">Fang J., Li H., Wu S., Dong F.</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://zhps.ejournal.by/jour/article/view/710">https://zhps.ejournal.by/jour/article/view/710</self-uri><abstract><p>Использована технология кругового дихроизма (КД) в сочетании со статистическим анализом для оценки сходства структур более высокого порядка коммерчески доступного трастузумаба и предлагаемого биоаналога. Эта технология демонстрирует хороший потенциал для обеспечения возможности сравнения сходств и различий во вторичной и третичной структуре белков. Множественные спектры КД в дальнем и ближнем УФ-диапазонах воспроизводятся с помощью КД-спектрометра с полностью интегрированным автосамплером и проточной ячейкой для устранения ошибок, обычно связанных с обработкой образцов на ручных КД-спектрометрах. Значимость сходств или различий оценивалась статистически с помощью трех аналитических методов (взвешенной спектральной разности, коэффициента корреляции и площади перекрытия). Сравнение вторичной структуры (спектры КД в дальнем УФ-диапазоне) показало наличие сходства между препаратом-новатором трастузумабом (герцептином®) и биоаналоговыми продуктами. Однако третичная структура (ближние УФ-спектры КД) свидетельствовала о статистически значимых различиях. Эти различия могли быть обусловлены изменениями третичной структуры или модификациями и деградациями в процессе производства или хранения.</p></abstract><trans-abstract xml:lang="en"><p>We employ a novel circular dichroism (CD) technology coupled with statistical analysis to assess the higher order structure (HOS) similarity of commercially available trastuzumab and a proposed biosimilar. This technology shows good potential for enabling the comparison of similarities and differences in secondary and tertiary structure of proteins. Multiple CD spectra in far- and near-UV are obtained reproducibly from a CD spectrometer with fully integrated autosampler and flow cell to eliminate the errors typically associated with sample handling on manual CD spectrometers. The significance of similarities or differences was quantified statistically using three analytical methods (weighted spectral difference, correlation coefficient and area of overlap). HOS comparison of the secondary structure (far-UV CD spectra) suggested similarity between the innovator drug, trastuzumab (Herceptin®), and biosimilar products. However, the tertiary structure (near-UV CD spectra) suggested statistically significant differences. These differences may be due to changes in tertiary structure or to modifications and degradations during the process of production or storage. The results show that the automated circular dichroism technology coupled with statistical analysis is a robust tool for enabling the comparison of similarities and differences in secondary and tertiary structure of protein products.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сопоставимость</kwd><kwd>биоаналог</kwd><kwd>трастузумаб</kwd><kwd>круговой дихроизм</kwd><kwd>статистический анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>comparability</kwd><kwd>biosimilar</kwd><kwd>trastuzumab</kwd><kwd>circular dichroism</kwd><kwd>statistical analysis</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">H. Schellekens, Nature Biotechnol., 22, N 11, 1357–1359 (2004).</mixed-citation><mixed-citation xml:lang="en">H. 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