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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">26879</article-id><article-id pub-id-type="doi">10.32607/actanaturae.26879</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">BODIPY Dye Derivative for Irreversible Fluorescent Labeling of Eukaryotic Cells and Their Simultaneous Cytometric Analysis</article-title><trans-title-group xml:lang="ru"><trans-title>Производное красителя BODIPY для необратимого флуоресцентного маркирования эукариотических клеток и их одновременного цитометрического анализа</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Frolova</surname><given-names>A. Yu.</given-names></name><name xml:lang="ru"><surname>Фролова</surname><given-names>А. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>anastasiya_frolova_box@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kutyakov</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Кутяков</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>seregiks-2108@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Martynov</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Мартынов</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vinart@list.ru</email><xref ref-type="aff" rid="aff1"/></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>deyev@ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pakhomov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Пахомов</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>alpah@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry of the 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><pub-date date-type="pub" iso-8601-date="2023-12-18" publication-format="electronic"><day>18</day><month>12</month><year>2023</year></pub-date><volume>15</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>92</fpage><lpage>99</lpage><history><date date-type="received" iso-8601-date="2023-10-19"><day>19</day><month>10</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-11-03"><day>03</day><month>11</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Frolova A.Y., Kutyakov S.V., Martynov V.I., Deyev S.M., Pakhomov A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Фролова А.Ю., Кутяков С.В., Мартынов В.И., Деев С.М., Пахомов А.А.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Frolova A.Y., Kutyakov S.V., Martynov V.I., Deyev S.M., Pakhomov A.A.</copyright-holder><copyright-holder xml:lang="ru">Фролова А.Ю., Кутяков С.В., Мартынов В.И., Деев С.М., Пахомов А.А.</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/26879">https://actanaturae.ru/2075-8251/article/view/26879</self-uri><abstract xml:lang="en"><p>In this work, we synthesized a green fluorescent dye derivative, 1,3,5,7-tetramethyl-BODIPY, with a heptyl substituent at the 8-position. The obtained highly hydrophobic compound was able to rapidly and irreversibly bind to eukaryotic cells. Incubation of cells with the dye over different periods of time or at different concentrations allowed us to control the degree of cell labeling and the level of fluorescence. This made it possible to modulate the fluorescence level of different eukaryotic cell cultures and then distinguish them by their level of fluorescence signal in the green channel in cytometric experiments. The labeled cells can be combined and further analyzed in the same test tube under identical conditions using the channels in which the dye does not fluoresce. This approach has been tested on a number of tumor cell cultures containing the HER2 receptor on their surface. The representation of the receptor in these cells was analyzed in one test tube in one run using a HER2-specific ligand based on the hybrid protein DARPin9_29-mCherry, which fluoresces in the red region of the spectrum.</p></abstract><trans-abstract xml:lang="ru"><p>В настоящей работе мы синтезировали производное зеленого флуоресцентного красителя 1,3,5,7-тетраметил-BODIPY с гептильным заместителем в 8-положении. Полученное высокогидрофобное соединение было способным быстро и необратимо связываться с эукариотическими клетками. Инкубация клеток с красителем в течение различного времени либо при различных концентрациях позволила контролировать степень их мечения и уровень флуоресценции. Это позволило нам модулировать уровень флуоресценции различных культур эукариотических клеток и потом различать их по уровню флуоресцентного сигнала в зеленом канале в цитометрических экспериментах. Помеченные клетки можно объединить и далее тестировать в одной пробирке в идентичных условиях с использованием каналов, в которых краситель не флуоресцирует. Этот подход протестирован на ряде культур опухолевых клеток, содержащих рецептор HER2 на своей поверхности. Представленность рецептора в этих клетках была проанализирована в одной пробирке за один прием с использованием лиганда к HER2 на основе гибридного белка DARPin9_29-mCherry, флуоресцирующего в красной области спектра.</p></trans-abstract><kwd-group xml:lang="en"><kwd>fluorescence</kwd><kwd>chromophore</kwd><kwd>cytometry</kwd><kwd>flow cytofluorimetry</kwd><kwd>BODIPY</kwd><kwd>cell labeling</kwd><kwd>cell analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>флуоресценция</kwd><kwd>хромофор</kwd><kwd>цитометрия</kwd><kwd>проточная цитофлуориметрия</kwd><kwd>BODIPY</kwd><kwd>мечение клеток</kwd><kwd>клеточный анализ</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>075-15-2021-1049</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Manohar S.M., Shah P., Nair A. // Bioanalysis. 2021. 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