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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">cardiotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский журнал клинической и экспериментальной медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian Journal of Clinical and Experimental Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2713-2927</issn><issn pub-type="epub">2713-265X</issn><publisher><publisher-name>TSU publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29001/2073-8552-2022-37-3-121-127</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-1513</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="ru"><subject>ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EXPERIMENTAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Уровень оксидативного стресса в эндотелиальных клетках, культивируемых в присутствии митомицина С</article-title><trans-title-group xml:lang="en"><trans-title>Oxidative stress in the endothelial cell culture exposed to mitomycin C</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4824-2418</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Синицкий</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Sinitsky</surname><given-names>M. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Синицкий Максим Юрьевич, канд. биол. наук, старший научный сотрудник, лаборатория геномной медицины, отдел экспериментальной медицины</p><p>650002, Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Maxim Yu. Sinitsky, Cand. Sci. (Biol.), Senior Research Scientist, Laboratory of Genomic Medicine, Department of Experimental Medicine</p><p>6, Sosnovy blvd, Kemerovo, 650002</p></bio><email xlink:type="simple">max-sinitsky@rambler.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/0000-0002-4467-8732</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Синицкая</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sinitskaya</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Синицкая Анна Викторовна, канд. биол. наук, научный сотрудник, лаборатория геномной медицины, отдел экспериментальной медицины</p><p>650002, Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Anna V. Sinitskaya, Cand. Sci. (Biol.), Research Scientist, Laboratory of Genomic Medicine</p><p>6, Sosnovy blvd, Kemerovo, 650002</p></bio><email xlink:type="simple">cepoav1991@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1518-3888</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шишкова</surname><given-names>Д. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Shishkova</surname><given-names>D. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шишкова Дарья Кирилловна, канд. биол. наук, научный сотрудник, лаборатория молекулярной, трансляционной и цифровой медицины, отдел экспериментальной медицины,</p><p>650002, Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Daria K. Shishkova, Cand. Sci. (Biol.), Research Scientist, Laboratory of Molecular, Translational, and Digital Medicine, Department of Experimental Medicine</p><p>6, Sosnovy blvd, Kemerovo, 650002</p></bio><email xlink:type="simple">shishkovadk@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0747-2495</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Асанов</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Asanov</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Асанов Максим Айдарович, младший научный сотрудник, лаборатория геномной медицины, отдел экспериментальной медицины</p><p>650002, Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Maxim A. Asanov, Junior Research Scientist, Laboratory of Genomic Medicine, Department of Experimental Medicine</p><p>6, Sosnovy blvd, Kemerovo, 650002</p></bio><email xlink:type="simple">asmaks988@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9714-4080</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хуторная</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khutornaya</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хуторная Мария Владимировна, младший научный сотрудник, лаборатория геномной медицины, отдел экспериментальной медицины</p><p>650002, Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Maria V. Khutornaya, Junior Research Scientist, Laboratory of Genomic Medicine, Department of Experimental Medicine</p><p>6, Sosnovy blvd, Kemerovo, 650002</p></bio><email xlink:type="simple">masha_hut@mail.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/0000-0002-3002-2863</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Понасенко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponasenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Понасенко Анастасия Валериевна, канд. мед. наук, заведующий лабораторией геномной медицины, отдел экспериментальной медицины</p><p>650002, Кемерово, Сосновый б-р, 6</p></bio><bio xml:lang="en"><p>Anastasia V. Ponasenko, Cand. Sci. (Med.), Head of the Laboratory of Genomic Medicine, Department of Experimental Medicine</p><p>6, Sosnovy blvd, Kemerovo, 650002</p></bio><email xlink:type="simple">ponaav@kemcardio.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт комплексных проблем сердечно-сосудистых заболеваний</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute for Complex Issues of Cardiovascular Diseases</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>20</day><month>10</month><year>2022</year></pub-date><volume>37</volume><issue>3</issue><fpage>121</fpage><lpage>127</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Синицкий М.Ю., Синицкая А.В., Шишкова Д.К., Асанов М.А., Хуторная М.В., Понасенко А.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Синицкий М.Ю., Синицкая А.В., Шишкова Д.К., Асанов М.А., Хуторная М.В., Понасенко А.В.</copyright-holder><copyright-holder xml:lang="en">Sinitsky M.Y., Sinitskaya A.V., Shishkova D.K., Asanov M.A., Khutornaya M.V., Ponasenko A.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.sibjcem.ru/jour/article/view/1513">https://www.sibjcem.ru/jour/article/view/1513</self-uri><abstract><p>Обоснование. Атеросклероз – одна из ведущих патологий сердечно-сосудистой системы. Показано, что одним из факторов риска данного заболевания является повреждение ДНК эндотелиальных клеток, приводящее к эндотелиальной дисфункции и вызванное воздействием на клетки мутагена митомицина С (ММС). ММС оказывает алкилирующее действие на ДНК и вовлечен в процесс формирования оксидативного стресса, также являющегося фактором риска развития атеросклероза.Цель исследования: оценить уровень маркеров оксидативного стресса в культурах первичных эндотелиальных клеток человека, экспонированных мутагеном алкилирующего механизма действия ММС.Материал и методы. Материалом исследования послужили коммерческие культуры первичных эндотелиальных клеток коронарной (HCAEC) и внутренней грудной (HITAEC) артерий человека, культивируемые в присутствии 500 нг/мл ММС (экспериментальная группа) и без мутагенной нагрузки (контрольная группа). Уровень активных форм кислорода, азота и 8-OH-дезоксигуанозина (8-OHdG) определяли в культуральной среде методом иммуноферментного анализа (ИФА). Относительную длину теломерных участков ДНК эндотелиальных клеток, а также экспрессию генов TERT и POT1 оценивали с помощью метода количественной полимеразной цепной реакции (кПЦР) с детекцией продуктов амплификации в режиме реального времени. Статистическую обработку результатов исследования проводили в программе GraphPad Prism 9.Результаты. В результате проведенной работы установлено, что концентрация активных форм кислорода, реактивных форм азота (NO2 –, NO3 –, NO2 –/NO3 –) и 8-OHdG статистически значимо не различалась в экспериментальной и контрольной группах клеток HCAEC и HITAEC. При этом в экспонированных ММС клетках HCAEC и HITAEC отмечено уменьшение относительной длины теломерных участков ДНК по сравнению с неэкспонированным контролем (10,97 против 27,03 в клетках HCAEC, p = 0,002 и 9,12 против 25,64 в клетках HITAEC, p = 0,001). Кроме того, в экспонированных ММС клетках HCAEC установлено 1,75-кратное повышение экспрессии гена POT1 относительно контроля (p = 0,019). Ген TERT не экспрессировался ни в одной из изученных групп.Заключение. Мутаген алкилирующего механизма действия ММС в эксперименте in vitro не вызывает выраженный оксидативный стресс в культурах первичных эндотелиальных клеток человека. Формирование эндотелиальной дисфункции, ассоциированной с экспозицией клеток ММС, обусловлено, главным образом, генотоксическим стрессом, связанным с алкилированием ДНК эндотелиальных клеток.</p></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Atherosclerosis is one of the leading cardiovascular pathologies. Evidence suggests that DNA damage caused by endothelial cell exposure to mitomycin C (MMC) leads to endothelial dysfunction and is the risk factor for this disease. MMC is an alkylating mutagen involved in the development of oxidative stress, which is also a risk factor for atherosclerosis. Aim. To access the levels of oxidative stress markers in the primary human endothelial cell culture exposed to alkylating mutagen MMC.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. Commercially available primary cultures of endothelial cells obtained from human coronary artery (HCAEC) and human internal thoracic artery (HITAEC) were used in the study. The cells were cultivated in the presence of 500 ng/mL MMC (experimental group) and without mutagenic load (control group). The levels of reactive oxygen species, reactive nitrogen species, and 8-OH-deoxyguanosine (8-OHdG) in cell growth media were assessed by enzyme-linked immunosorbent assay. The relative telomere length and expression of TERT and POT1 genes were accessed in endothelial cells by quantitative polymerase chain reaction. Statistical analysis of data was performed using GraphPad Prism 9 software.</p></sec><sec><title>Results</title><p>Results. There were no differences in the concentrations of reactive oxygen species, reactive nitrogen species (NO2 -, NO3 -, NO2 -/NO3 -), and 8-OHdG in HCAEC and HITAEC cultures exposed to MMC compared to the corresponding parameters in the non-exposed controls. At the same time, HCAEC and HITAEC exposed to MMC were characterized by a decrease in the relative telomere length compared to control (10.97 vs. 27.03 in HCAEC, p = 0.002 and 9.12 vs. 25.64 in HITAEC, p = 0.001). Moreover, we discovered 1.75-fold increase in the expression of POT1 gene in the experimental HCAEC compared to control (p = 0.019). No expression of TERT gene was observed in study groups.</p></sec><sec><title>Conclusions</title><p>Conclusions. Alkylating mutagen MMC did not induce any pronounced oxidative stress in the primary human endothelial cells in vitro. The development of endothelial dysfunction caused by MMC exposure was triggered mainly by DNA alkylation resulting in the genotoxic stress in the endothelial cells.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>эндотелиальная дисфункция</kwd><kwd>оксидативный стресс</kwd><kwd>мутагенез</kwd><kwd>атерогенез</kwd><kwd>теломеры</kwd><kwd>теломераза</kwd></kwd-group><kwd-group xml:lang="en"><kwd>endothelial dysfunction</kwd><kwd>oxidative stress</kwd><kwd>mutagenesis</kwd><kwd>atherogenesis</kwd><kwd>telomere</kwd><kwd>telomerase</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 21-75-10052 «Молекулярные механизмы развития эндотелиальной дисфункции в ответ на генотоксический стресс», https://rscf.ru/project/21-75-10052/.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Global, regional, and national age-sex-specifi c mortality for 282 causes of death in 195 countries and territories, 1980–2017: A systematic analysis for the Global Burden of Disease Study 2017. 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