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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">10.32362/2410-6593-2022-17-2-140-151</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-1822</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>BIOCHEMISTRY AND BIOTECHNOLOGY</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>БИОХИМИЯ И БИОТЕХНОЛОГИЯ</subject></subj-group></article-categories><title-group><article-title>Investigation of the anti-influenza activity of siRNA complexes against the cellular genes FLT4, Nup98, and Nup205 in vitro</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование противогриппозной активности комплексов миРНК против клеточных генов FLT4, Nup98 и Nup205 на модели in vitro</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5682-4581</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пашков</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pashkov</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пашков Евгений Алексеевич, аспирант, кафедра микробиологии, вирусологии и иммунологии; младший научный сотрудник, лаборатория молекулярной иммунологии</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2; 105064, Москва, Малый Казенный переулок, д. 5А</p></bio><bio xml:lang="en"><p>Evgeny A. Pashkov, Postgraduate Student, Department of Microbiology, Virology and Immunology; Junior Researcher, Laboratory of Molecular Immunology</p><p>8, Trubetskaya ul., Moscow, 119991; 5А, Malyi Kazennyi pereulok, Moscow, 105064</p></bio><email xlink:type="simple">pashckov.j@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/0000-0001-7216-1266</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коротышева</surname><given-names>М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Korotysheva</surname><given-names>M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коротышева Мария Олеговна, студент, Международная школа «Медицина Будущего»</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2</p></bio><bio xml:lang="en"><p>Maria O. Korotysheva, Student, International School «Medicine of the Future»</p><p>8, Trubetskaya ul., Moscow</p></bio><email xlink:type="simple">trans.mutation@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4295-7858</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пак</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pak</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пак Анастасия Витальевна, студент, Институт клинической медицины им. Н.В. Склифосовского</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2</p></bio><bio xml:lang="en"><p>Anastasia V. Pak, Student, Institute of Clinical Medicine</p><p>8, Trubetskaya ul., Moscow</p></bio><email xlink:type="simple">dcnnpk@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7385-5083</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Файзулоев</surname><given-names>Е. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Faizuloev</surname><given-names>E. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Файзулоев Евгений Бахтиёрович, к.б.н., заведующий лабораторией молекулярной вирусологии</p><p>105064, Москва, Малый Казенный переулок, д. 5А</p></bio><bio xml:lang="en"><p>Evgeny B. Faizuloev, Cand. Sci. (Biol.), Head of the Laboratory of Molecular Virology</p><p>5А, Malyi Kazennyi pereulok, Moscow, 105064</p></bio><email xlink:type="simple">faizuloev@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3561-8295</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сидоров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sidorov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сидоров Александр Викторович, к.б.н., заведующий лабораторией ДНК-содержащих вирусов</p><p>105064, Москва, Малый Казенный переулок, д. 5А</p></bio><bio xml:lang="en"><p>Alexander V. Sidorov, Cand. Sci. (Biol.), Head of the Laboratory of DNA viruses</p><p>5А, Malyi Kazennyi pereulok, Moscow, 105064</p></bio><email xlink:type="simple">sashasidorov@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8962-4765</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поддубиков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Poddubikov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Поддубиков Александр Владимирович, к.б.н., заведующий лабораторией микробиологии условно-патогенных бактерий</p><p>105064, Москва, Малый Казенный переулок, д. 5А</p></bio><bio xml:lang="en"><p>Alexander A. Poddubikov, Cand. Sci. (Biol.), Head of the Laboratory of Microbiology of Opportunistic Pathogenic Bacteria</p><p>5А, Malyi Kazennyi pereulok, Moscow, 105064</p></bio><email xlink:type="simple">poddubikov@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8430-1975</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Быстрицкая</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Bystritskaya</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Быстрицкая Елизавета Петровна, младший научный сотрудник, лаборатория молекулярной вирусологии</p><p>105064, Москва, Малый Казенный переулок, д. 5А</p></bio><bio xml:lang="en"><p>Elizaveta P. Bystritskaya, Junior Researcher, Laboratory of Molecular Immunology</p><p>5А, Malyi Kazennyi pereulok, Moscow, 105064</p></bio><email xlink:type="simple">lisabystritskaya@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6269-2108</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дронина</surname><given-names>Ю. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Dronina</surname><given-names>Yu. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дронина Юлия Евгеньевна, к.м.н., доцент кафедры микробиологии, вирусологии и иммунологии; старший научный сотрудник, лаборатория легионеллеза</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2; 123098, Москва, ул. Гамалеи, д. 18</p></bio><bio xml:lang="en"><p>Yuliya E. Dronina, Cand. Sci. (Med.), Associate Professor, Department of Microbiology, Virology and Immunology; Senior Researcher, Laboratory of Legionellosis</p><p>8, Trubetskaya ul., Moscow, 119991; 18, Gamaleya ul., Moscow, 123098</p></bio><email xlink:type="simple">droninayu@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3783-9232</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Солнцева</surname><given-names>В. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Solntseva</surname><given-names>V. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Солнцева Виктория Константиновна, к.м.н., старший преподаватель кафедры микробиологии, вирусологии и иммунологии им. академика А.А. Воробьева</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2</p></bio><bio xml:lang="en"><p>Viktoriia K. Solntseva, Cand. Sci. (Med.), Senior Lecturer, A.A. Vorobiev Department of Microbiology, Virology and Immunology</p><p>8, Trubetskaya ul., Moscow, 119991</p></bio><email xlink:type="simple">speak_to_vika@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9205-322X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайцева</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaiceva</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зайцева Татьяна Александровна, к.м.н., старший преподаватель кафедры микробиологии, вирусологии и иммунологии им. академика А.А. Воробьева</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2</p></bio><bio xml:lang="en"><p>Tatyana A. Zaiceva, Cand. Sci. (Med.), Senior Lecturer, A.A. Vorobiev Department of Microbiology, Virology and Immunology</p><p>8, Trubetskaya ul., Moscow, 119991</p></bio><email xlink:type="simple">zat25@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4963-5053</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пашков</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Pashkov</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пашков Евгений Петрович, д.м.н., профессор кафедры микробиологии, вирусологии и иммунологии им. академика А.А. Воробьева</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2</p></bio><bio xml:lang="en"><p>Evgeny P. Pashkov, Dr. Sci. (Med.), Professor, A.A. Vorobiev Department of Microbiology, Virology and Immunology</p><p>8, Trubetskaya ul., Moscow, 119991</p></bio><email xlink:type="simple">9153183256@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8099-6201</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Быков</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Bykov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Быков Анатолий Сергеевич, д.м.н., профессор кафедры микробиологии, вирусологии и иммунологии</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2</p></bio><bio xml:lang="en"><p>Anatoly S. Bykov, Dr. Sci. (Med.), Professor, Department of Virology and Immunology</p><p>8, Trubetskaya ul., Moscow, 119991</p></bio><email xlink:type="simple">bykov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1757-8389</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Свитич</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Svitich</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Свитич Оксана Анатольевна, чл.-корр. РАН, д.м.н., директор, заведующий лабораторией молекулярной иммунологии; профессор кафедры микробиологии, вирусологии и иммунологии</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2; 105064, Москва, Малый Казенный переулок, д. 5А</p></bio><bio xml:lang="en"><p>Oxana A. Svitich, Corresponding Member of the Russian Academy of Sciences, Dr. Sci. (Med.), Head of the Federal State Budgetary Scientific Institution «I. Mechnikov Research Institute of Vaccines and Sera», Head of the Laboratory of Molecular Immunology; Professor, Department of Microbiolody, Virology and Immunology</p><p>8, Trubetskaya ul., Moscow, 119991; 5А, Malyi Kazennyi pereulok, Moscow, 105064</p></bio><email xlink:type="simple">svitichoa@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/0000-0002-0017-1892</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зверев</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zverev</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зверев Виталий Васильевич, академик РАН, д.б.н., научный руководитель Научно-исследовательского института вакцин и сывороток им. И.И. Мечникова; заведующий кафедрой микробиологии, вирусологии и иммунологии</p><p>119991, Москва, ул. Трубецкая, д. 8, с. 2; 105064, Москва, Малый Казенный переулок, д. 5А</p></bio><bio xml:lang="en"><p>Vitaliy V. Zverev, Full Member of the Russian Academy of Sciences, Dr. Sci. (Biol.), Scientific Director; Head of the Department of Microbiolody, Virology and Immunology</p><p>8, Trubetskaya ul., Moscow, 119991; 5А, Malyi Kazennyi pereulok, Moscow, 105064</p></bio><email xlink:type="simple">vitalyzverev@outlook.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России (Сеченовский Университет); Научно-исследовательский институт вакцин и сывороток им. И.И. Мечникова Минздрава&#13;
России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov First Moscow State Medical University (Sechenov University); I. Mechnikov Research Institute of Vaccines and Sera</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России (Сеченовский Университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Научно-исследовательский институт вакцин и сывороток им. И.И. Мечникова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I. Mechnikov Research Institute of Vaccines and Sera</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Первый Московский государственный медицинский университет им. И.М. Сеченова Минздрава России (Сеченовский Университет); Национальный исследовательский центр эпидемиологии и микробиологии им. почетного академика Н.Ф. Гамалеи Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.M. Sechenov First Moscow State Medical University (Sechenov University); N.F. Gamaleya National Research Center for Epidemiology and Microbiology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>31</day><month>05</month><year>2022</year></pub-date><volume>17</volume><issue>2</issue><fpage>140</fpage><lpage>151</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Pashkov E.A., Korotysheva M.O., Pak A.V., Faizuloev E.B., Sidorov A.V., Poddubikov A.V., Bystritskaya E.P., Dronina Y.E., Solntseva V.K., Zaiceva T.A., Pashkov E.P., Bykov A.S., Svitich O.A., Zverev V.V., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Пашков Е.А., Коротышева М.О., Пак А.В., Файзулоев Е.Б., Сидоров А.В., Поддубиков А.В., Быстрицкая Е.П., Дронина Ю.Е., Солнцева В.К., Зайцева Т.А., Пашков Е.П., Быков А.С., Свитич О.А., Зверев В.В.</copyright-holder><copyright-holder xml:lang="en">Pashkov E.A., Korotysheva M.O., Pak A.V., Faizuloev E.B., Sidorov A.V., Poddubikov A.V., Bystritskaya E.P., Dronina Y.E., Solntseva V.K., Zaiceva T.A., Pashkov E.P., Bykov A.S., Svitich O.A., Zverev 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://www.finechem-mirea.ru/jour/article/view/1822">https://www.finechem-mirea.ru/jour/article/view/1822</self-uri><abstract><sec><title>Objectives</title><p>Objectives. Evaluation of changes in the viral activity of influenza A/WSN/33 after complex knockdown of combinations of cellular genes FLT4, Nup98 and Nup205 in human lung cell culture A549. </p></sec><sec><title>Methods</title><p>Methods. The work was carried out using the equipment of the Center for Collective Use of the I. Mechnikov Research Institute of Vaccines and Sera, Russia. The authors performed transfection of combinations of small interfering ribonucleic acid (siRNA) complexes that cause simultaneous disruption of the expression of cellular genes FLT4, Nup98, and Nup205. Within three days from the moment of transfection and infection, the supernatant fluid and cell lysate were taken for subsequent viral reproduction intensity determination using the titration method for cytopathic action. The dynamics of changes in the concentration of viral ribonucleic acid (vRNA) was determined by real-time reverse transcription polymerase chain reaction (real-time RT-PCR). The nonparametric Mann–Whitney test was used to calculate statistically significant differences between groups.</p></sec><sec><title>Results</title><p>Results. Using all of the combinations of siRNA complexes, cell viability did not decrease below the threshold level of 70%. In cells treated with complex FLT4.2 + Nup98.1 + Nup205 at the multiplicity of infection (MOI) equal to 0.1, a significant decrease in viral reproduction by 1.5 lg was noted on the first day in relation to nonspecific and viral controls. The use of siRNA complexes at MOI 0.01 resulted in a more pronounced antiviral effect. The viral titer in cells treated with siRNA complexes FLT4.2 + Nup98.1 and Nup98.1 + Nup205 decreased by 1.5 lg on the first day. In cells treated with complexes FLT4.2 + Nup205 and FLT4.2 + Nup98.1 + Nup205, it decreased by 1.8 and 2.0 lg on the first day and by 1.8 and 2.5 lg on the second day, respectively, in relation to nonspecific and viral controls. When conducting real-time RT-PCR, a significant decrease in the concentration of vRNA was noted. At MOI 0.1, a 295, 55, and 63-fold decrease in the viral load was observed with the use of siRNA complexes FLT4.2 + Nup98.1, Nup98.1 + Nup205, and FLT4.2 + Nup98.1 + Nup205, respectively. On the second day, a decrease in vRNA was also observed in cells treated with complex A. A 415-fold decrease in vRNA on the third day was noted in cells treated with complex FLT4.2 + Nup205. At MOI 0.01, the concentration of vRNA decreased 9.5 times when using complex B relative to nonspecific and viral control.</p></sec><sec><title>Conclusions</title><p>Conclusions. The study showed a pronounced antiviral effect of siRNA combinations while simultaneously suppressing the activity of cellular genes (FLT4, Nup98, and Nup205), whose expression products are playing important role in the viral reproduction process, and obtained original designs of siRNA complexes. The results obtained are of great importance for the creation of emergence prophylactic and therapeutic drugs, whose action is based on the mechanism of RNA interference.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. Оценка изменения вирусной активности гриппа A/WSN/33 после комплексного нокдауна комбинаций клеточных генов FLT4, Nup98 и Nup205 в культуре легочных кле­ток человека А549.</p></sec><sec><title>Методы</title><p>Методы. Работа выполнена с использованием оборудования центра коллективного поль­зования Научно-исследовательского института вакцин и сывороток им И.И. Мечникова (Россия). Авторами выполнялась трансфекция комбинаций комплексов миРНК, вызыва­ющих одновременное нарушение экспрессии клеточных генов FLT4, Nup98 и Nup205. В течение трех дней с момента трансфекции и заражения проводился отбор надосадоч­ной жидкости и клеточного лизата для последующего определения интенсивности ви­русной репродукции по методу титрования по цитопатическому действию. Динамику изменения концентрации вирусной рибонуклеиновой кислоты (вРНК) определяли мето­дом обратной транскрипции и полимеразной цепной реакции в режиме реального вре­мени (ОТ-ПЦР-РВ). Для вычисления статистически значимых различий между группами использовали непараметрический критерий Манна-Уитни.</p></sec><sec><title>Результаты</title><p>Результаты. При использовании всех комбинаций комплексов малых интерферирую­щих РНК (миРНК) жизнеспособность клеток не снижалась ниже порогового уровня в 70%. В клетках, обработанных комплексом FLT4.2 + Nup98.1 + Nup205 при множественности заражения (Multiplicity of infection, MOI) 0.1 достоверное снижение вирусной репродукции на 1.5 lg отмечалось на первые сутки по отношению к неспецифическому и вирусному контролям. Использование комплексов миРНК при MOI 0.01 приводило к более выражен­ному противовирусному эффекту. Вирусный титр в клетках, обработанных комплек­сами миРНК FLT4.2 + Nup98.1 и Nup98.1 + Nup205 снижался на первые сутки на 1.5 lg. В клетках, обработанных комплексами FLT4.2 + Nup205 и FLT4.2 + Nup98.1 + Nup205 снижался на 1.8 и 2 lg на первые сутки и на 1.8 и 2.5 lg на вторые сутки соответствен­но по отношению к неспецифическому и вирусному контролям. При проведении ОТ-ПЦР-РВ отмечено достоверное снижение концентрации вирусной РНК. При MOI 0.1 снижение ви­русной в 295, 55 и 63 раза отмечался при использовании комплексов миРНК FLT4.2 + Nup98.1, Nup98.1 + Nup205 и FLT4.2 + Nup98.1 + Nup205 соответственно. На вторые сутки сниже­ние вирусной РНК также отмечалось в клетках, обработанных комплексом FLT4.2 + Nup98.1. Снижение вРНК на третьи сутки в 415 раз отмечалось в клетках, обработанных ком­плексом FLT4.2 + Nup205. При MOI 0.01 концентрация вРНК снизилась в 9.5 раз при ис­пользовании комплекса Nup98.1 + Nup205 относительно неспецифического и вирусного контроля.</p></sec><sec><title>Выводы</title><p>Выводы. В ходе исследования был показан выраженный противовирусный эффект ком­бинаций миРНК при одновременном подавлении активности клеточных генов (FLT4, Nup98 и Nup205), чьи продукты экспрессии играют важное участие в процессе вирусной репродукции, а также получены оригинальные конструкции комплексов миРНК. Полу­ченные результаты имеют важное значение для создания препаратов для экстренной профилактики и терапии, чье действие основано на механизме РНК-интерференции.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>РНК-интерференция</kwd><kwd>вирус гриппа А</kwd><kwd>экспрессия генов</kwd><kwd>матричная РНК</kwd><kwd>малые интерферирующие РНК</kwd><kwd>вирусная РНК</kwd></kwd-group><kwd-group xml:lang="en"><kwd>RNA interference</kwd><kwd>influenza A virus</kwd><kwd>gene expression</kwd><kwd>mRNA</kwd><kwd>small interfering RNA</kwd><kwd>viral RNA</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность центру коллективного пользования НИИВС им И.И. Мечникова.</funding-statement><funding-statement xml:lang="en">The authors are grateful to the Center for Collective Use of the I.I. 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