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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">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8331-2018-54-2-197-203</article-id><article-id custom-type="elpub" pub-id-type="custom">vestich-321</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>БИООРГАНИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOORGANIC CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>КОНТРОЛИРУЕМОЕ ПЕГИЛИРОВАНИЕ БЕЛКОВ АЗИДНЫМИ  РЕАГЕНТАМИ-РАЗВЕТВИТЕЛЯМИ С ПОМОЩЬЮ КЛИК-ХИМИИ</article-title><trans-title-group xml:lang="en"><trans-title>CONTROLLED CuAAC PROTEIN PEGYLATION WITH AZIDE BRANCHING REAGENTS</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>Мартыненко-Макаев</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Martynenko-Makaev</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мартыненко-Макаев Юрий Владимирович – науч. сотрудник.</p><p>ул. Сурганова, 13, 220072, Минск.</p></bio><bio xml:lang="en"><p>Yury V. Martynenko-Makaev – Researcher. </p><p>13, Surganov Str., 220072, Minsk.</p></bio><email xlink:type="simple">yrmart@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Круглик</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kruhlik</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Круглик Александр Сергеевич – мл. науч. сотрудник.</p><p>ул. Сурганова, 13, 220072, Минск.</p></bio><bio xml:lang="en"><p>Aliaksandr S. Kruhlik – Junior researcher.</p><p>13, Surganov Str., 220072, Minsk.</p></bio><email xlink:type="simple">a.kruhlik@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шарко</surname><given-names>О. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharko</surname><given-names>O. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шарко Ольга Леонидовна - канд. хим. наук, ст. науч. сотрудник.</p><p>ул. Сурганова, 13, 220072, Минск.</p></bio><bio xml:lang="en"><p>Olga L. Sharko – Ph. D. (Chemistry), Senior researcher.</p><p>13, Surganov Str., 220072, Minsk.</p></bio><email xlink:type="simple">olsharko@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шманай</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shmanai</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шманай Вадим Владимирович – канд. хим. наук, зав. лаб.</p><p>ул. Сурганова, 13, 220072, Минск.</p></bio><bio xml:lang="en"><p>Vadim V. Shmanai – Ph. D. (Chemistry), Head of the Laboratory.</p><p>13, Surganov Str., 220072, Minsk.</p></bio><email xlink:type="simple">shmanai@ifoch.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физико-органической химии Национальной академии наук Беларуси.</institution></aff><aff xml:lang="en"><institution>Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus .</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>23</day><month>06</month><year>2018</year></pub-date><volume>54</volume><issue>2</issue><fpage>197</fpage><lpage>203</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мартыненко-Макаев Ю.В., Круглик А.С., Шарко О.Л., Шманай В.В., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Мартыненко-Макаев Ю.В., Круглик А.С., Шарко О.Л., Шманай В.В.</copyright-holder><copyright-holder xml:lang="en">Martynenko-Makaev Y.V., Kruhlik A.S., Sharko O.L., Shmanai V.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://vestichem.belnauka.by/jour/article/view/321">https://vestichem.belnauka.by/jour/article/view/321</self-uri><abstract><p>Полиэтиленгликоль (ПЭГ) является нетоксичным, неиммуногенным, гидрофильным, незаряженным и бионеразлагаемым полимером, и его использование в составе терапевтических белковых препаратов вошло в медицинскую практику. Известно, что ПЭГ, соединенный с терапевтическим белком, способствует более длительному нахождению препарата в организме, снижает его иммуногенность и антигенность, повышает растворимость и стабильность в биологических средах, что позволяет оптимизировать фармакокинетические свойства препарата. Одной из целей оптимизации структуры конъюгатов терапевтических белков с ПЭГом является максимальное сохранение биологической активности белка, что может быть достигнуто с помощью контролируемого пегилирования по заданным сайтам белковой молекулы. В настоящей работе представлен метод двухстадийной модификации белков разветвленными полиэтиленгликолями с использованием реакции [3+2] диполярного циклоприсоединения азидов к алкинам. Описан синтез азидного реагента-разветвителя на основе трис(гидроксиметил)аминометана, содержащего три остатка полиэтиленгликоля. Разработана методика двухстадийной модификации модельного белка бычь- его сывороточного альбумина, включающая введение на первой стадии алкиновых групп при помощи N-гидро- ксисукцинимидного эфира алкинокислоты, которые затем вступают в «клик»-реакцию с азидным пегилирующим реагентом-разветвителем. Полученные конъюгаты выделены с помощью гельпроникающей хроматографии. Число введенных модификаций определено при помощи МАЛДИ масс-спектрометрии.</p></abstract><trans-abstract xml:lang="en"><p>Polyethyleneglycol (PEG) is nontoxic, nonimmunogenic, hydrophilic, chargeless and nonbiodegradable poliymer. Its usage as a part of therapeutics protein drugs is common in medicine practice. It is known that covalent attachment of PEG conduces to prolong blood circulation half-lives, improves drug solubility and stability and reduces immunogenicity. It allows optimizing pharmacodynamic and pharmacokinetic drug properties. The goal of structure optimization  of therapeutic proteins conjugates with PEG is to reduce loss of biological activity. It can be reached through controlled site- specific pegylation. We introduce two-step modification of proteins with branched polyethylenglycols via click-chemistry, synthesis of branched PEG azide reagent on the base of tris(hydroxymethyl)aminomethane with three linear PEG polymers. At first, we introduce alkyne groups with NHS-ester of alkyne acid in BSA protein. Then, branched PEG azide reagent reacts with alkyne function via CuAAC. Purification of the conjugates was done via gel-chromotography. Number of modifications was calculated from MALDI mass-spectra.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>полиэтиленгликоль</kwd><kwd>модификация белков</kwd><kwd>клик-химия</kwd><kwd>пегилирование</kwd><kwd>терапевтические белки пролонгированного действия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>polyethyleneglycol</kwd><kwd>protein modification</kwd><kwd>CuAAC</kwd><kwd>pegylation</kwd><kwd>prolonged therapeutic proteins</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">Nucci, M. L. The therapeutic value of poly(ethylene glycol)-modified proteins / M. L. Nucci, R. Shorr, A. Abuchowski // Adv. Drug Deliv. Rev. – 1991. – Vol. 6, № 2. – P. 133–151. DOI:10.1016/0169-409X(91)90037-D</mixed-citation><mixed-citation xml:lang="en">Nucci M. L., Shorr R., Abuchowski A. The therapeutic value of poly(ethylene glycol)-modified proteins. 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