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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">10384</article-id><article-id pub-id-type="doi">10.32607/20758251-2017-9-3-103-107</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">The Effect of the Targeted Recombinant Toxin DARPin-PE40 on the Dynamics of HER2-Positive Tumor Growth</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние рекомбинантного адресного токсина DARPin-PE40 на динамику роста HER2-положительных опухолей</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sokolova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Соколова</surname><given-names>E. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>malehanova@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>Proshkina</surname><given-names>G. M.</given-names></name><name xml:lang="ru"><surname>Прошкина</surname><given-names>Г. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gmb@ibch.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kutova</surname><given-names>O. M.</given-names></name><name xml:lang="ru"><surname>Кутова</surname><given-names>O. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>malehanova@mail.ru</email><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Balalaeva</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Балалаева</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>malehanova@mail.ru</email><xref ref-type="aff" rid="aff4"/><xref ref-type="aff" rid="aff6"/><xref ref-type="aff" rid="aff6"/></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. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>malehanova@mail.ru</email><xref ref-type="aff" rid="aff5"/><xref ref-type="aff" rid="aff6"/><xref ref-type="aff" rid="aff6"/><xref ref-type="aff" rid="aff7"/></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. академиков М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lobachevsky State University of Nizhny Novgorod</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Нижегородский государственный университет им. Н.И. Лобачевского</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Lobachevsky State University of Nizhny Novgorod</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Нижегородский государственный университет им. Н.И. Лобачевского</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution></aff></aff-alternatives><aff id="aff6"><institution>Lobachevsky State University of Nizhny Novgorod</institution></aff><aff id="aff7"><institution>Lomonosov Moscow State University</institution></aff><pub-date date-type="pub" iso-8601-date="2017-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2017</year></pub-date><volume>9</volume><issue>3</issue><issue-title xml:lang="en">VOL 9, NO3 (2017)</issue-title><issue-title xml:lang="ru">ТОМ 9, №3 (2017)</issue-title><fpage>103</fpage><lpage>107</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 ©; 2017, Sokolova E.A., Proshkina G.M., Kutova O.M., Balalaeva I.V., Deyev S.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, Соколова E.A., Прошкина Г.M., Кутова O.M., Балалаева И.В., Деев С.M.</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">Sokolova E.A., Proshkina G.M., Kutova O.M., Balalaeva I.V., Deyev S.M.</copyright-holder><copyright-holder xml:lang="ru">Соколова E.A., Прошкина Г.M., Кутова O.M., Балалаева И.В., Деев С.M.</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/10384">https://actanaturae.ru/2075-8251/article/view/10384</self-uri><abstract xml:lang="en"><p>The development of targeted toxins based on non-immunoglobulin targeting molecules appears to be one of the most advanced approaches in the targeted therapy of malignant tumors with a high expression of the HER2 receptor. Earlier, we showed that the targeted toxin DARPin-PE40 consisting of the HER2-specific non-immunoglobulin polypeptide (the targeting module) and a fragment of Pseudomonas exotoxin A (the toxic module) exhibits an antitumor effect in vivo against the HER2-positive adenocarcinoma xenograft. In this work, an in-depth analysis of the effect of DARPin-PE40 on the growth dynamics of experimental xenograft tumors was carried out. DARPin-PE40 was shown to inhibit tumor growth at a dose of 25 and 50 µg/animal and to cause tumor node reduction at a dose of 80 µg/animal, followed by growth resumption at the end of therapy. An evaluation of the tumor growth dynamics revealed statistically significant differences in tumor volume in mice in the experimental groups compared to the control group. The results testify to the potential of using the created targeted toxin as an agent for the targeted therapy of HER2-overexpressing tumors.</p></abstract><trans-abstract xml:lang="ru"><p>Разработка адресных токсинов на основе направляющих молекул неиммуноглобулиновой природы представляется актуальной для развития таргетной терапии злокачественных новообразований с высокой экспрессией рецептора-онкомаркера HER2. Ранее на ксенографтной модели HER2-положительной аденокарциномы нами было показано, что адресный токсин DARPin-PE40, содержащий HER2-специфичный полипептид неиммуноглобулиновой природы в качестве направляющего модуля и фрагмент псевдомонадного экзотоксина А в качестве токсического модуля, проявляет противоопухолевый эффект in vivo. В данной работе проведен углубленный анализ влияния DARPin-PE40 на динамику роста ксенографтных опухолей у мышей. Показано, что воздействие DARPin-PE40 в дозе 25 и 50 мкг/животное приводит к замедлению роста опухоли, а в дозе 80 мкг/животное вызывает сокращение опухолевого узла с последующим возобновлением роста по окончании терапии. Оценка динамики роста опухолей выявила статистически значимые различия в объеме опухолей у мышей опытных групп по сравнению с контрольной. Полученные результаты свидетельствуют о перспективности использования адресного токсина в качестве агента для таргетной терапии опухолей, сверхэкспрессирующих HER2.</p></trans-abstract><kwd-group xml:lang="en"><kwd>non-immunoglobulin module DARPin</kwd><kwd>Pseudomonas aeruginosa exotoxin A</kwd><kwd>HER2 receptor</kwd><kwd>targeted therapy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>неиммуноглобулиновый модуль DARPin</kwd><kwd>псевдомонадный экзотоксин А</kwd><kwd>рецептор HER2</kwd><kwd>таргетная терапия</kwd></kwd-group><funding-group><funding-statement xml:lang="en">Recombinant targeted toxin purification was supported by the Russian Science Foundation (project No. 14-24-00106P); animal studies were supported by the Ministry of Education and Science of the Russian Federation (project No. 6.7109.2017/9.10).</funding-statement><funding-statement xml:lang="ru">Работа по получению рекомбинантного адресного токсина поддержана грантом РНФ (проект № 14-24-00106П); анализ противоопухолевого эффекта адресного токсина на животных выполнен при поддержке Министерства образования и науки РФ (проект № 6.7109.2017/9.10). Работа выполнена с использованием оборудования ЦКП ИБХ, поддержанного Минобрнауки России, идентификатор соглашения RFMEFI62117X0018.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Kaprin A.D., Starinsky V.V., Petrova G.V. // Malignant neoplasms in Russia in 2015 (morbidity and mortality). 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