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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">toxreview</journal-id><journal-title-group><journal-title xml:lang="ru">Токсикологический вестник</journal-title><trans-title-group xml:lang="en"><trans-title>Toxicological Review</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-7922</issn><issn pub-type="epub">3034-4611</issn><publisher><publisher-name>Federal Scientific Center of Hygiene named after F.F. Erisman</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36946/0869-7922-2020-4-12-20</article-id><article-id custom-type="elpub" pub-id-type="custom">toxreview-318</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>ОСОБЕННОСТИ ИММОБИЛИЗАЦИИ ФОСФОРОРГАНИЧЕСКИХ СОЕДИНЕНИЙ ЧЕРЕЗ СТРЕПТАВИДИН-БИОТИНОВУЮ СИСТЕМУ ДЛЯ ЭКСПЕРИМЕНТОВ ПО СЕЛЕКЦИИ АПТАМЕРОВ</article-title><trans-title-group xml:lang="en"><trans-title>FEATURES OF ORGANOPHOSPHATES IMMOBILIZATION VIA STREPTAVIDIN-BIOTIN SYSTEM FOR EXPERIMENTS ON SELECTION OF APTAMERS</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>Белинская</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Belinskaya</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белинская Дарья Александровна</p><p>кандидат биологических наук, научный сотрудник лаборатории сравнительной физиологии сенсорных систем</p><p>194223, г. Санкт-Петербург</p></bio><bio xml:lang="en"><p>Belinskaya Daria Alexandrovna</p><p>194223, Saint Petersburg</p></bio><email xlink:type="simple">d_belinskaya@mail.ru</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>Челуснова</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chelusnova</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Челуснова Юлия Викторовна</p><p>научный сотрудник лаборатории химического моделирования</p><p>188663, г.п. Кузьмоловский, Ленинградская область</p></bio><bio xml:lang="en"><p>Chelusnova Yulia Victorovna</p><p>188663, p.o. Kuz’molovsky, Leningrad Region</p></bio><email xlink:type="simple">chelusnovayulia@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абзианидзе</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Abzianidze</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абзианидзе Виктория Вадимовна</p><p>кандидат химических наук, старший научный сотрудник лаборатории химического моделирования</p><p>188663, г.п. Кузьмоловский, Ленинградская область</p></bio><bio xml:lang="en"><p>Abzianidze Victoria Vadimovna</p><p>188663, p.o. Kuz’molovsky, Leningrad Region</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гончаров</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Goncharov</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гончаров Николай Васильевич</p><p>доктор биологических наук, ведущий научный сотрудник; заведующий лабораторией сравнительной биохимии ферментов Федерального государственного бюджетного учреждения науки</p><p>194223, г. Санкт-Петербург</p><p>188663, г.п. Кузьмоловский, Ленинградская область</p></bio><bio xml:lang="en"><p>Goncharov Nikolay Vasil’evich</p><p>194223, Saint Petersburg</p><p>188663, p.o. Kuz’molovsky, Leningrad Region</p></bio><email xlink:type="simple">ngoncharov@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение науки Институт эволюционной физиологии и биохимии им. И.М. Сеченова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное государственное унитарное предприятие «НИИ гигиены, профпатологии и экологии человека» Федерального медико-биологического агентства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Hygiene, Occupational Pathology and Human Ecology, Federal Medical Biological Agency</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение науки Институт эволюционной физиологии и биохимии им. И.М. Сеченова РАН; Федеральное государственное унитарное предприятие «НИИ гигиены, профпатологии и экологии человека» Федерального медико-биологического агентства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences; Research Institute of Hygiene, Occupational Pathology and Human Ecology, Federal Medical Biological Agency</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>31</day><month>07</month><year>2020</year></pub-date><volume>0</volume><issue>4</issue><fpage>12</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Белинская Д.А., Челуснова Ю.В., Абзианидзе В.В., Гончаров Н.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Белинская Д.А., Челуснова Ю.В., Абзианидзе В.В., Гончаров Н.В.</copyright-holder><copyright-holder xml:lang="en">Belinskaya D.A., Chelusnova Y.V., Abzianidze V.V., Goncharov N.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://www.toxreview.ru/jour/article/view/318">https://www.toxreview.ru/jour/article/view/318</self-uri><abstract><p>/</p><p>Отравления фосфорорганическими соединениями (ФОС) занимают в общем числе экзотоксикозов одно из ведущих мест. Детоксикацию ФОС на первом этапе попадания в организм можно обеспечить с помощью ДНК- или РНК-аптамеров, связывающих яд в кровеносном русле. В настоящее время основным способом поиска аптамеров является экспериментальный метод систематической эволюции лигандов экспоненциальным обогащением (SELEX). В процессе селекции аптамеров необходима иммобилизация молекулы-мишени через стрептавидин-биотиновый комплекс. Поскольку молекула отравляющего вещества имеет небольшие размеры, для увеличения ее доступности для связывания с аптамером необходимо использование спейсера между ФОС и биотином. Цель данной работы – на примере параоксона оптимизировать процедуру селекции аптамеров к ФОС путем увеличения доступности иммобилизованной через стрептавидин-биотиновый комплекс молекулы отравляющего вещества. Для этого методами молекулярного моделирования были протестированы три спейсера между ФОС и биотином: три звена полиэтиленгликоля (3-ПЭГ), четыре звена полиэтиленгликоля (4-ПЭГ) и аминогексил. Конформация комплекса биотинилированного параоксона со стрептавидином и процесс взаимодействия параоксона со связывающим фрагментом аптамера были смоделированы методами молекулярного докинга и молекулярной динамики. Оценка возможности биотини- лированного параоксона связаться с аптамером была проведена путем анализа площади поверх- ности параоксона, доступной растворителю, а также с помощью расчета свободных энергий связывания. Было показано, что только в случае использования аминогексила иммобилизован- ный параоксон может связаться с аптамером. На заключительном этапе был проведен синтез параоксона, связанного с биотином через аминогексил.</p></abstract><trans-abstract xml:lang="en"><p>Poisoning with organophosphorus compounds occupy one of the leading places in exotoxicosis. At the first stage, the detoxification of organophosphates can be provided with the help of DNA or RNA aptamers that bind the poison in the bloodstream. Currently, the main method of searching for aptamers is the experimental method of systematic evolution of ligands by exponential enrichment (SELEX). In the process of aptamer selection, the target molecule must be immobilized via the streptavidin-biotin complex. Since the poison molecule is small in size, to increase its availability for binding to aptamer, it is necessary to use a spacer between organophosphorus compounds and biotin. The aim of this work was to optimize the selection of aptamers for organophosphorus compounds by increasing the availability of a poison molecule immobilized via the streptavidin-biotin complex on the example of paraoxon. For this purpose, three spacers between organophosphorus compounds and biotin were tested using molecular modeling methods: three links of polyethylene glycol (3-PEG), four links of polyethylene glycol (4-PEG) and aminohexyl. The conformation of the biotinylated paraoxon complex with streptavidin and the interaction of paraoxon with the binding fragment of the aptamer were modeled using molecular docking and molecular dynamics methods. The ability of biotinylated paraoxon to bind to the aptamer has been evaluated by analyzing the surface area of the paraoxon available to the solvent, as well as by calculating the free binding energies. It has been shown that only in the case of aminohexyl immobilized paraoxon can contact the aptamer. At the final stage, the synthesis of paraoxon bound to biotin via aminohexyl was carried out.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фосфорорганические соединения</kwd><kwd>селекция аптамеров</kwd><kwd>иммобилизация</kwd><kwd>молекулярное моделирование</kwd><kwd>синтез</kwd></kwd-group><kwd-group xml:lang="en"><kwd>organophosphorus compounds</kwd><kwd>selection of aptamers</kwd><kwd>immobilization</kwd><kwd>molecular modeling</kwd><kwd>synthesis</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">King A.M., Aaron C.K. Organophosphate and carbamate poisoning. Emerg. Med. Clin. North Am. 2015; 33: 133-51.</mixed-citation><mixed-citation xml:lang="en">King A.M., Aaron C.K. Organophosphate and carbamate poisoning. Emerg. Med. Clin. 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