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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">10485</article-id><article-id pub-id-type="doi">10.32607/20758251-2015-7-3-74-80</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 Use of Transcription Terminators to Generate Transgenic Lines of Chinese Hamster Ovary Cells (CHO) with Stable and High Level of Reporter Gene Expression</article-title><trans-title-group xml:lang="ru"><trans-title>Использование терминаторов транскрипции для создания трансгенных линий клеток яичников китайского хомячка (СНО) со стабильным и высоким уровнем экспрессии репортерного гена</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gasanov</surname><given-names>N. B.</given-names></name><name xml:lang="ru"><surname>Гасанов</surname><given-names>Н. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mog@genebiology.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Toshchakov</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Тощаков</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mog@genebiology.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Georgiev</surname><given-names>P. G.</given-names></name><name xml:lang="ru"><surname>Георгиев</surname><given-names>П. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mog@genebiology.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Maksimenko</surname><given-names>O. G.</given-names></name><name xml:lang="ru"><surname>Максименко</surname><given-names>O. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>mog@genebiology.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Gene Biology, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биологии гена РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2015-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2015</year></pub-date><volume>7</volume><issue>3</issue><issue-title xml:lang="en">VOL 7, NO3 (2015)</issue-title><issue-title xml:lang="ru">ТОМ 7, №3 (2015)</issue-title><fpage>74</fpage><lpage>80</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 ©; 2015, Gasanov N.B., Toshchakov S.V., Georgiev P.G., Maksimenko O.G.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2015, Гасанов Н.Б., Тощаков С.В., Георгиев П.Г., Максименко O.Г.</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="en">Gasanov N.B., Toshchakov S.V., Georgiev P.G., Maksimenko O.G.</copyright-holder><copyright-holder xml:lang="ru">Гасанов Н.Б., Тощаков С.В., Георгиев П.Г., Максименко O.Г.</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/10485">https://actanaturae.ru/2075-8251/article/view/10485</self-uri><abstract xml:lang="en"><p>Mammalian cell lines are widely used to produce recombinant proteins. Stable transgenic cell lines usually contain many insertions of the expression vector in one genomic region. Transcription through transgene can be one of the reasons for target gene repression after prolonged cultivation of cell lines. In the present work, we used the known transcription terminators from the SV40 virus, as well as the human β- and γ-globin genes, to prevent transcription through transgene. The transcription terminators were shown to increase and stabilize the expression of the EGFP reporter gene in transgenic lines of Chinese hamster ovary (CHO) cells. Hence, transcription terminators can be used to create stable mammalian cells with a high and stable level of recombinant protein production.</p></abstract><trans-abstract xml:lang="ru"><p>Клеточные линии млекопитающих широко используются для получения клеток-продуцентов рекомбинантных белков. Обычно стабильные трансгенные клеточные линии содержат много встроек экспрессионного вектора в одном месте генома. Транскрипция через трансген может быть одной из причин репрессии целевого гена при длительном культивировании таких клеточных линий. В настоящей работе с целью предотвращения транскрипции через трансген использовали известные терминаторы транскрипции вируса SV40, β- и γ-глобиновых генов человека. Показано, что терминаторы транскрипции увеличивают и стабилизируют экспрессию репортерного гена EGFP в трансгенных линиях клеток яичников китайского хомячка (СНО). Таким образом, терминаторы транскрипции могут использоваться для получения культур клеток млекопитающих с высоким и стабильным уровнем наработки целевого белка.</p></trans-abstract><kwd-group xml:lang="en"><kwd>recombinant proteins</kwd><kwd>production of proteins in cell lines</kwd><kwd>transcription termination</kwd><kwd>insulators</kwd><kwd>CHO</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рекомбинантные белки</kwd><kwd>продукция белков в клеточных линиях</kwd><kwd>терминация транскрипции</kwd><kwd>инсуляторы</kwd><kwd>CHO</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation (project No. 14-24-00166).</funding-statement><funding-statement xml:lang="ru">Работа выполнена при поддержке Российского научного фонда (проект № 14-24-00166).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Kim J.Y., Kim Y.G., Lee G.M. // Appl. 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