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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">10525</article-id><article-id pub-id-type="doi">10.32607/20758251-2014-6-4-54-59</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Research Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Excessive Labeling Technique Provides a Highly Sensitive Fluorescent Probe for Real-time Monitoring of Biodegradation of Biopolymer Pharmaceuticals in vivo</article-title><trans-title-group xml:lang="ru"><trans-title>Создание высокоэффективного флуоресцентного зонда для изучения биодеградации фармакологических белковых препаратов in vivo</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Terekhov</surname><given-names>S. S.</given-names></name><name xml:lang="ru"><surname>Терехов</surname><given-names>С. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Smirnov</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Смирнов</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shamborant</surname><given-names>O. G.</given-names></name><name xml:lang="ru"><surname>Шамборант</surname><given-names>О. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zenkova</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Зенкова</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chernolovskaya</surname><given-names>E. L</given-names></name><name xml:lang="ru"><surname>Черноловская</surname><given-names>Е. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gladkikh</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Гладких</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Murashev</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Мурашев</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dyachenko</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Дьяченко</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Knorre</surname><given-names>V. D.</given-names></name><name xml:lang="ru"><surname>Кнорре</surname><given-names>В. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Belogurov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Белогуров</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ponomarenko</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Пономаренко</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Deyev</surname><given-names>S. M.</given-names></name><name xml:lang="ru"><surname>Деев</surname><given-names>С. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vlasov</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Власов</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gabibov</surname><given-names>A. G.</given-names></name><name xml:lang="ru"><surname>Габибов</surname><given-names>А. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sterekhoff@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff6"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Kazan Federal University</institution></aff><aff><institution xml:lang="ru">Казанский федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт химической биологии и фундаментальной медицины СО РАН</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Branch of the Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Филиал института биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Branch of the Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino</institution></aff><aff><institution xml:lang="ru">Филиал института биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Institute of Gene Biology, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биологии гена РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2014-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2014</year></pub-date><volume>6</volume><issue>4</issue><issue-title xml:lang="en">VOL 6, NO4 (2014)</issue-title><issue-title xml:lang="ru">ТОМ 6, №4 (2014)</issue-title><fpage>54</fpage><lpage>59</lpage><history><date date-type="received" iso-8601-date="2020-01-17"><day>17</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2014, Terekhov S.S., Smirnov I.V., Shamborant O.G., Zenkova M.A., Chernolovskaya E.L., Gladkikh D.V., Murashev A.N., Dyachenko I.A., Knorre V.D., Belogurov A.A., Ponomarenko N.A., Deyev S.M., Vlasov V.V., Gabibov A.G.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2014, Терехов С.С., Смирнов И.В., Шамборант О.Г., Зенкова М.А., Черноловская Е.Л., Гладких Д.В., Мурашев А.Н., Дьяченко И.А., Кнорре В.Д., Белогуров А.А., Пономаренко Н.А., Деев С.М., Власов В.В., Габибов А.Г.</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="en">Terekhov S.S., Smirnov I.V., Shamborant O.G., Zenkova M.A., Chernolovskaya E.L., Gladkikh D.V., Murashev A.N., Dyachenko I.A., Knorre V.D., Belogurov A.A., Ponomarenko N.A., Deyev S.M., Vlasov V.V., Gabibov A.G.</copyright-holder><copyright-holder xml:lang="ru">Терехов С.С., Смирнов И.В., Шамборант О.Г., Зенкова М.А., Черноловская Е.Л., Гладких Д.В., Мурашев А.Н., Дьяченко И.А., Кнорре В.Д., Белогуров А.А., Пономаренко Н.А., Деев С.М., Власов В.В., Габибов А.Г.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://actanaturae.ru/2075-8251/article/view/10525">https://actanaturae.ru/2075-8251/article/view/10525</self-uri><abstract xml:lang="en"><p>Recombinant proteins represent a large sector of the biopharma market. Determination of the main elimination pathways raises the opportunities to significantly increase their half-lives in vivo. However, evaluation of biodegradation of pharmaceutical biopolymers performed in the course of pre-clinical studies is frequently complicated. Noninvasive pharmacokinetic and biodistribution studies in living organism are possible using proteins conjugated with near-infrared dyes. In the present study we designed a highly efficient probe based on fluorescent dye self-quenching for monitoring of in vivo biodegradation of recombinant human butyrylcholinesterase. The maximum enhancement of integral fluorescence in response to degradation of an intravenously administered enzyme was observed 6 h after injection. Importantly, excessive butyrylcholinesterase labeling with fluorescent dye results in significant changes in the pharmacokinetic properties of the obtained conjugate. This fact must be taken into consideration during future pharmacokinetic studies using in vivo bioimaging.</p></abstract><trans-abstract xml:lang="ru"><p>Рекомбинантные белки стали одними из лидирующих среди современных фармакологических препаратов. Вместе с тем существующие методы анализа фармакокинетики в большинстве своем не учитывают процесс биодеградации белкового препарата. Закономерности биодеградации белкового фармпрепарата позволяют определить основные пути его выведения из организма при проведении доклинических испытаний. Использование флуоресцентных агентов высокой яркости красного и дальне-красного диапазона дает возможность проводить неинвазивные исследования выведения и распределения белковых препаратов в живом организме. Мы предложили использовать метод избыточной конъюгации белков флуорофорами для создания зонда, позволяющего наблюдать биодеградацию рекомбинантной бутирилхолинэстеразы в организме живой мыши. Установлено, что максимум разгорания флуоресценции, отражающей деградацию фермента, наблюдается через 6 ч после внутривенного введения препарата. Показано, что избыточная конъюгация флуорофора приводит к существенному изменению фармакокинетических параметров препарата. Этот факт необходимо учитывать при выборе метода флуоресцентного «биоимиджинга» при проведении фармакокинетических исследований.</p></trans-abstract><kwd-group xml:lang="en"><kwd>fluorescent probe</kwd><kwd>biodegradation</kwd><kwd>pharmacokinetics</kwd><kwd>in vivo bioimaging</kwd><kwd>self-quenching</kwd><kwd>butyrylcholinesterase</kwd><kwd>proteolysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>биодеградация</kwd><kwd>бутирилхолинэстераза</kwd><kwd>фармакокинетика</kwd><kwd>флуоресцентный зонд</kwd><kwd>протеолиз</kwd><kwd>самотушение</kwd><kwd>in vivo-визуализация</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Ministry of Education and Science of the Russian Federation (project ID RFMEFI57614X0184), the Presidium of the Russian Academy of Sciences (program “Molecular and Cellular Biology”), State Contract with the Ministry of Industry and Trade of the Russian Federation (№ 13411.1008799.13.128, ID “2.1 Antidot 2013”), Presidential Scholarship SP-2477.2013.4 (I.S.), Presidential Grant for the support of leading scientific schools NSh-2064.2014.14 “Chemical Foundations of Biocatalysis”, and program of basic research of the Presidium of the Russian Academy of Sciences № 24 “Foundations of Basic Research in Nanotechnologies and Nanomaterials” (project “Nanopharmaceuticals based on myelin basic protein fragments compartmentalized into lyposome containers for treating neurodegenerative diseases”). RFBR grants (14-04-00647 А, 14-04-31207 mol_a), Russian Science Foundation project 14-24-00106. The work was carried out under the state program to improve competitiveness of the Kazan (Volga) Federal University among the world's leading research and educational Centers.</funding-statement><funding-statement xml:lang="ru">Исследования проведены при финансовой поддержке государства в лице Минобрнауки России (уникальный идентификатор проекта RFMEFI57614X0184), Президиума Российской академии наук «Молекулярная и клеточная биология», ГК Минпромторга России (№ 13411.1008799.13.128 шифр «2.1 Антидот 2013») и персональной стипендии Президента России СП-2477.2013.4 (И.С.), гранта Президента РФ по поддержке ведущих научных школ НШ-2064.2014.14 «Химические основы биокатализа», программы фундаментальных исследований Президиума РАН № 24 «Основы фундаментальных исследований нанотехнологий и наноматериалов», проект «Нанолекарства для лечения нейродегенеративных заболеваний, сконструированные на основе фрагментов основного белка миелина, компартментализованных в липосомные контейнеры», РФФИ (14-04-00647 А, 14-04-31207 мол_а), РНФ (14-24-00106). Работа выполнена в рамках государственной программы повышения конкурентоспособности Казанского (Приволжского) федерального университета среди ведущих мировых научно-образовательных центров.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Hoppin J., Orcutt K.D., Hesterman J.Y., Silva M.D., Cheng D., Lackas C., Rusckowski M. // JPET . 2011, V.337, №2, P.350-358</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>[2] Yuskevich V., Khodarovich Y., Kagarliskiy G., Stremovskiy O., Maksimenko O., Lukash S., Polanovsky O., Deyev S. // Biochimie. 2011, V.93, №3, P.628-630</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>[3] Sreenivasan V.K., Stremovskiy O.A., Kelf T.A., Heblinski M., Goodchild A.K., Connor M., Deyev S.M., Zvyagin A.V. // Bioconjugate Chem. 2011, V.22, №9, P.1768-1775</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>[4] Stepanov A.V., Belogurov A.A. 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