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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">10524</article-id><article-id pub-id-type="doi">10.32607/20758251-2014-6-4-48-53</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">Specific Visualization of Tumor Cells Using Upconversion Nanophosphors</article-title><trans-title-group xml:lang="ru"><trans-title>Специфическая визуализация опухолевых клеток с помощью антистоксовых нанофосфóров</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Grebenik</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Гребеник</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Generalova</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Генералова</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nechaev</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Нечаев</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khaydukov</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Хайдуков</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mironova</surname><given-names>K. E.</given-names></name><name xml:lang="ru"><surname>Миронова</surname><given-names>К. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stremovskiy</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Стремовский</surname><given-names>О. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lebedenko</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Лебеденко</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zvyagin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Звягин</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/><xref ref-type="aff" rid="aff5"/></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>katya.ivukina@rambler.ru</email><xref ref-type="aff" rid="aff1"/><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">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет тонких химических технологий им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Institute of Laser and Information Technologies, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт лазерных и информационных технологий РАН</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Macquarie University</institution></aff><aff><institution xml:lang="ru">Нижегородский государственный университет им. Н.И. Лобачевского</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Lobachevsky Nizhniy Novgorod State University</institution></aff><aff><institution xml:lang="ru">Macquarie University</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Lobachevsky Nizhniy Novgorod State University</institution></aff><aff><institution xml:lang="ru">Нижегородский государственный университет им. Н.И. Лобачевского</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>48</fpage><lpage>53</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, Grebenik E.A., Generalova A.N., Nechaev A.V., Khaydukov E.V., Mironova K.E., Stremovskiy O.A., Lebedenko E.N., Zvyagin A.V., Deyev S.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2014, Гребеник Е.А., Генералова А.Н., Нечаев А.В., Хайдуков Е.В., Миронова К.Е., Стремовский О.А., Лебеденко Е.Н., Звягин А.В., Деев С.М.</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="en">Grebenik E.A., Generalova A.N., Nechaev A.V., Khaydukov E.V., Mironova K.E., Stremovskiy O.A., Lebedenko E.N., Zvyagin A.V., Deyev S.M.</copyright-holder><copyright-holder xml:lang="ru">Гребеник Е.А., Генералова А.Н., Нечаев А.В., Хайдуков Е.В., Миронова К.Е., Стремовский О.А., Лебеденко Е.Н., Звягин А.В., Деев С.М.</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/10524">https://actanaturae.ru/2075-8251/article/view/10524</self-uri><abstract xml:lang="en"><p>The development of targeted constructs on the basis of photoluminescent nanoparticles with a high photo- and chemical stability and absorption/emission spectra in the “transparency window” of biological tissues is an important focus area of present-day medical diagnostics. In this work, a targeted two-component construct on the basis of upconversion nanophosphors (UCNPs) and anti-tumor 4D5 scFv was developed for selective labeling of tumor cells overexpressing the HER2 tumor marker characteristic of a number of human malignant tumors. A high affinity barnase : barstar (Bn : Bs) protein pair, which exhibits high stability in a wide range of pH and temperatures, was exploited as a molecular adapter providing self-assembly of the two-component construct. High selectivity for the binding of the two-component 4D5 scFv-Bn : UCNP-Bs construct to human breast adenocarcinoma SK-BR-3 cells overexpressing HER2 was demonstrated. This approach provides an opportunity to produce similar constructs for the visualization of different specific markers in pathogenic tissues, including malignant tumors.</p></abstract><trans-abstract xml:lang="ru"><p>Актуальным направлением в современной медицинской диагностике является создание нацеленных на патологические мишени конструкций на основе фотолюминесцентных наночастиц, обладающих высокой фото- и химической стабильностью, а также спектрами поглощения и испускания фотолюминесценции в области «окна прозрачности» биоткани. В работе получена двухкомпонентная конструкция на основе антистоксовых нанофосфóров (НАФ) и противоопухолевых мини-антител 4D5scFv для селективного мечения клеток, гиперэкспрессирующих опухолевый маркер HER2, характерный для целого ряда метастазирующих опухолей человека. Высокоаффинная белковая пара барстар : барназа (Bs : Bn), обладающая чрезвычайной устойчивостью в широком диапазоне pH и температур, использована в качестве молекулярного адаптера, обеспечивающего самосборку двухкомпонентной конструкции. На клетках аденокарциномы молочной железы человека SK-BR-3, гиперэкспрессирующих HER2, показана высокая избирательность связывания полученной двухкомпонентной конструкции 4D5scFv-Bn : Bs-НАФ с опухолевыми клетками. Предложенный подход позволяет получать аналогичные конструкции для визуализации различных специфических маркеров в патогенных тканях, в том числе в злокачественных новообразованиях.</p></trans-abstract><kwd-group xml:lang="en"><kwd>upconversion nanophosphors</kwd><kwd>biomarker imaging</kwd><kwd>anti-tumor antibodies</kwd><kwd>self-assembly</kwd><kwd>HER2</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>антистоксовые нанофосфóры</kwd><kwd>визуализация биомаркеров</kwd><kwd>противоопухолевые антитела</kwd><kwd>самосборка</kwd><kwd>HER2</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by Russian Science Foundation (grant 14-24-00106) - synthesis of bioconjugates with nanoparticles and study of their interaction with cancer cells; the program of the Presidium of the Russian Academy of Sciences “Molecular and Cell Biology” Ministry of Education of the Russian Federation (№14.578.21.0051, 14.Z50.31.0022) – preparation and characterization of recombinant proteins.</funding-statement><funding-statement xml:lang="ru">Работа поддержана РНФ (грант 14-24-00106) – синтез биоконъюгатов с наночастицами и исследование их взаимодействия с раковыми клетками; программой Президиума РАН «Молекулярная и клеточная биология», Минобрнауки РФ (№ 14.578.21.0051, 14.Z50.31.0022) – получение и характеристика рекомбинантных белков.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Nikitin M.P., Shipunova V.O., Deyev S.M., Nikitin P.I. // Nat. 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