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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">10.32362/2410-6593-2021-16-2-148-155</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-1698</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>CHEMISTRY AND TECHNOLOGY OF MEDICINAL COMPOUNDS AND BIOLOGICALLY ACTIVE SUBSTANCES</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЯ И ТЕХНОЛОГИЯ ЛЕКАРСТВЕННЫХ ПРЕПАРАТОВ И БИОЛОГИЧЕСКИ АКТИВНЫХ СОЕДИНЕНИЙ</subject></subj-group></article-categories><title-group><article-title>Study of the multiple incorporation of modified nucleotides into the growing DNA strand</article-title><trans-title-group xml:lang="ru"><trans-title>Изучение множественного встраивания модифицированных нуклеотидов в растущую цепь ДНК</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1328-771X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волкова</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkova</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>лаборант, </p><p>119991, Москва, ул. Вавилова, д. 32</p></bio><email xlink:type="simple">olechka.volckowa@yandex.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/0000-0001-5468-4119</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чудинов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chudinov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., заведующий лабораторией, </p><p>119991, Москва, ул. Вавилова, д. 32</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/0000-0002-9011-134X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лапа</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lapa</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.б.н., научный сотрудник.,</p><p>119991, Москва, ул. Вавилова, д. 32</p></bio><email xlink:type="simple">lapa@biochip.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт молекулярной биологии им. В.А. Энгельгардта Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Engelhardt Institute of Molecular Biology, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>24</day><month>05</month><year>2021</year></pub-date><volume>16</volume><issue>2</issue><fpage>148</fpage><lpage>155</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Volkova O.S., Chudinov A.V., Lapa S.A., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Волкова О.С., Чудинов А.В., Лапа С.А.</copyright-holder><copyright-holder xml:lang="en">Volkova O.S., Chudinov A.V., Lapa S.A.</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/1698">https://www.finechem-mirea.ru/jour/article/view/1698</self-uri><abstract><sec><title>Objectives</title><p>Objectives. This study investigated the substrate properties of the modified derivatives of triphosphates of purine and pyrimidine deoxynucleosides (5-propynyl-2’-deoxyuridine-5’-triphosphate, 5-propynyl2’-deoxycytidine-5’-triphosphate, 5-methyl-2’-deoxycytidine-5’-triphosphate, and N6-methyl-2’-deoxyadenosine-5’-triphosphate) during their simultaneous incorporation in enzymatic reactions (polymerase chain and primer extension reactions).</p></sec><sec><title>Methods</title><p>Methods. The real-time polymerase chain and primer extension reactions were used to study the substrate efficiency of modified deoxynucleotide triphosphates. Various pairwise combinations of modified derivatives were used; specially designed synthetic DNA fragments and libraries for the Systematic Evolution of Ligands by Exponential Enrichment technology were used as templates. Reactions were conducted using DNA polymerases: Taq, Vent (exo-), DeepVent (exo-), and KOD XL.</p></sec><sec><title>Results</title><p>Results. In each case, a pair of compounds (modified dUTP + dCTP, dUTP + dATP, and dCTP + dATP) was selected to study the simultaneous incorporation into the growing DNA strand. The most effective combinations of nucleotides for simultaneous insertion were dU and dC, having 5-propynyl substitution. The Vent (exo-) DNA polymerase was found as the most effective for the modified substrates.</p></sec><sec><title>Conclusions</title><p>Conclusions. The selected compounds can be used for the enzymatic preparation of modified DNA, including aptamers with extended physicochemical properties. </p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. Целью данной работы является изучение субстратных свойств модифицированных производных трифосфатов дезоксинуклеозидов пуриновой и пиримидиновой природы (5-пропинил-2’-дезоксиуридин-5’-трифосфат, 5-пропинил-2’-дезоксицитидин-5’-трифосфат, 5-метил-2’-дезоксицитидин-5’-трифосфат, N6-метил-2’-дезоксиаденозин-5’-трифосфат) при их одновременном встраивании в процессе ферментативных реакций (полимеразной цепной реакции и реакции удлинения праймера).</p></sec><sec><title>Методы</title><p>Методы. В работе для изучения субстратной эффективности модифицированных трифосфатов дезоксинуклеозидов использовали методы полимеразной цепной реакции в режиме реального времени и реакции удлинения праймера. Использовали различные попарные сочетания модифицированных производных, в качестве матриц применяли специальным образом сконструированные синтетические фрагменты ДНК и библиотеки для SELEX. Реакции проводили с применением ДНК-полимераз: Taq, Vent (exo-), DeepVent (exo-) и KOD XL.</p></sec><sec><title>Результаты</title><p>Результаты. В каждом случае из исследуемых соединений выбирали пару соединений (модифицированные dUTP + dCTP, dUTP + dATP, dCTP + dATP) для изучения одновременного встраивания в растущую цепь ДНК. Найдены наиболее эффективные сочетания нуклеотидов для одновременного встраивания, а именно: dU и dC, имеющие 5-пропинильный заместитель. Также найдена наиболее эффективная (из протестированных) ДНК-полимераза: Vent (exo-).</p></sec><sec><title>Выводы</title><p>Выводы. Выбранные соединения можно использовать для ферментативного получения модифицированных ДНК, в частности аптамеров с расширенными физико-химическими свойствами. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>модифицированные нуклеотиды</kwd><kwd>модифицированные аптамеры</kwd><kwd>полимеразная цепная реакция в режиме реального времени</kwd><kwd>реакция удлинения праймера</kwd></kwd-group><kwd-group xml:lang="en"><kwd>modified aptamers</kwd><kwd>modified nucleotides</kwd><kwd>primer extension reaction</kwd><kwd>real-time polymerase chain reaction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта № 19-04-01217.</funding-statement><funding-statement xml:lang="en">The study was supported by the Russian Foundation for Basic Research, grant No. 19-04-01217.</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">Lee K., Rafi M., Wang X., Aran K., Feng X., Lo Sterzo C., et al. 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