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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">cancersp</journal-id><journal-title-group><journal-title xml:lang="ru">Южно-Российский онкологический журнал/ South Russian Journal of Cancer</journal-title><trans-title-group xml:lang="en"><trans-title>South Russian Journal of Cancer</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2686-9039</issn><publisher><publisher-name>АНО "Перспективы онкологии"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37748/2686-9039-2024-5-2-2</article-id><article-id custom-type="edn" pub-id-type="custom">incomr</article-id><article-id custom-type="elpub" pub-id-type="custom">cancersp-261</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Звенья фибринолитической системы у мышей с нокаутом по гену урокиназы на фоне роста меланомы В16/F10</article-title><trans-title-group xml:lang="en"><trans-title>Units of fibrinolytic system in mice with urokinase gene knockout in presence of growing B16/F10 melanoma</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3618-6890</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Франциянц</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Frantsiyants</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Франциянц Елена Михайловна – д.б.н., профессор, заместитель генерального директора по научной работе, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0003-3618-6890, SPIN: 9427-9928, AuthorID: 462868, ResearcherID: Y-1491-2018, Scopus Author ID: 55890047700</p></bio><bio xml:lang="en"><p>Elena M. Frantsiyants – Dr. Sci. (Biol.), professor, deputy CEO for science, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0003-3618-6890, SPIN: 9427-9928, AuthorID: 462868, ResearcherID: Y-1491-2018, Scopus Author ID: 55890047700</p></bio><email xlink:type="simple">super.gormon@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/0000-0002-2302-8271</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бандовкина</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bandovkina</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бандовкина Валерия Ахтямовна – д.б.н., старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-2302-8271, SPIN: 8806-2641, AuthorID: 696989, ResearcherID: AAG-8708-2019, Scopus Author ID: 57194276288</p></bio><bio xml:lang="en"><p>Valeriya A. Bandovkina – Dr. Sci. (Biol.), senior researcher at the Laboratory for the Study of Pathogenesis of Malignant Tumors, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-2302-8271, SPIN: 8806-2641, AuthorID: 696989, ResearcherID: AAG-8708-2019, Scopus Author ID: 57194276288</p></bio><email xlink:type="simple">valerryana@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/0000-0002-4318-7587</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сурикова</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Surikova</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сурикова Екатерина Игоревна – к.б.н., старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-4318-7587, SPIN: 2401-4115, AuthorID: 301537, ResearcherID: AAG-8748-2019, Scopus Author ID: 6507092816</p></bio><bio xml:lang="en"><p>Ekaterina I. Surikova – Cand. Sci. (Biol.), senior researcher at the Laboratory for the Study of Pathogenesis of Malignant Tumors, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-4318-7587, SPIN: 2401-4115, AuthorID: 301537, ResearcherID: AAG-8748-2019, Scopus Author ID: 6507092816</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3972-2452</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каплиева</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaplieva</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каплиева Ирина Викторовна – д.м.н., руководитель лабораторией изучения патогенеза злокачественных опухолей, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-3972-2452, SPIN: 5047-1541, AuthorID: 734116, ResearcherID: ААЕ-3540-2019, Scopus Author ID: 23994000800</p></bio><bio xml:lang="en"><p>Irina V. Kaplieva – Dr. Sci. (Med.), head of the Laboratory for the Study of the Pathogenesis of Malignant Tumors, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-3972-2452, SPIN: 5047-1541, AuthorID: 734116, ResearcherID: ААЕ-3540-2019, Scopus Author ID: 23994000800</p></bio><email xlink:type="simple">kaplirina@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/0000-0002-2674-9832</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Погорелова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pogorelova</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Погорелова Юлия Александровна – к.б.н., старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-2674-9832, SPIN: 2168-8737, AuthorID: 558241, ResearcherID: AAE-4168-2022, Scopus Author ID: 37026863400</p></bio><bio xml:lang="en"><p>Yuliya A. Pogorelova – Cand. Sci. (Biol.), senior researcher at the Laboratory of Malignant Tumor Pathogenesis Study, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-2674-9832, SPIN: 2168-8737, AuthorID: 558241, ResearcherID: AAE-4168-2022, Scopus Author ID: 37026863400</p></bio><email xlink:type="simple">flora-73@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/0000-0002-7395-3086</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нескубина</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Neskubina</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нескубина Ирина Валерьевна – к.б.н., старший научный сотрудник лаборатории изучения патогенеза злокачественных опухолей, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-7395-3086, SPIN: 3581-8531, AuthorID: 794688, ResearcherID: AAG-8731-2019, Scopus Author ID: 6507509066</p></bio><bio xml:lang="en"><p>Irina V. Neskubina – Cand. Sci. (Biol.), senior researcher at the Laboratory for the Study of the Pathogenesis of Malignant Tumors, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-7395-3086, SPIN: 3581-8531, AuthorID: 794688, ResearcherID: AAG-8731-2019, Scopus Author ID: 6507509066</p></bio><email xlink:type="simple">neskubina.irina@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/0000-0002-9749-2747</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трепитаки</surname><given-names>Л. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Trepitaki</surname><given-names>L. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Трепитаки Лидия Константиновна – к.б.н., научный сотрудник лаборатории изучения патогенеза злокачественных опухолей, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: http://orcid.org/0000-0002-9749-2747, SPIN: 2052-1248, AuthorID: 734359, ResearcherID: AAG-9218-2019, Scopus Author ID: 55357624700</p></bio><bio xml:lang="en"><p>Lidiya K. Trepitaki – Cand. Sci. (Biol.), researcher at the Laboratory for the Study of Pathogenesis of Malignant Tumors, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-9749-2747, SPIN: 2052-1248, AuthorID: 734359, ResearcherID: AAG-9218-2019, Scopus Author ID: 55357624700</p></bio><email xlink:type="simple">legolab69@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/0000-0002-3711-8155</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черярина</surname><given-names>Н. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Cheryarina</surname><given-names>N. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Черярина Наталья Дмитриевна – врач-лаборант лаборатории изучения патогенеза злокачественных опухолей, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-3711-8155, SPIN: 2189-3404, AuthorID: 558243, Scopus Author ID: 56204439400</p></bio><bio xml:lang="en"><p>Natalya D. Cheryarina – MD, laboratory assistant at the Laboratory for the Study of the Pathogenesis of Malignant Tumors, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-3711-8155, SPIN: 2189-3404, AuthorID: 558243, Scopus Author ID: 56204439400</p></bio><email xlink:type="simple">scalolas.92@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/0000-0002-0068-0881</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ушакова</surname><given-names>Н. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Ushakova</surname><given-names>N. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ушакова Наталья Дмитриевна – д.м.н., профессор, врач анестезиолог-реаниматолог отделения анестезиологии и реанимации, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-0068-0881, SPIN: 9715-2250, AuthorID: 571594, Scopus Author ID: 8210961900</p></bio><bio xml:lang="en"><p>Natalia D. Ushakova – Dr. Sci. (Med.), professor, MD, anesthesiologist-resuscitator of the Department of Anesthesiology and Resuscitation, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-0068-0881, SPIN: 9715-2250, AuthorID: 571594, Scopus Author ID: 8210961900</p></bio><email xlink:type="simple">ndu2000@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/0000-0002-5300-1213</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ишонина</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Ishonina</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ишонина Оксана Георгиевна – к.б.н., заведующий отделом подготовки и переподготовки специалистов, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация; доцент кафедры медицинской биологии и генетики ФГБОУ ВО «Ростовский государственный медицинский университет» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-5300-1213, SPIN: 4051-5165, AuthorID: 612417, Scopus Author ID: 37115461900</p></bio><bio xml:lang="en"><p>Oksana G. Ishonina – Cand. Sci. (Biol.), head at the Department of Training and Retraining of Specialists, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation; associate professor of the Department of Medical Biology and Genetics, Rostov State Medical University, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-5300-1213, SPIN: 4051-5165, AuthorID: 612417, Scopus Author ID: 37115461900</p></bio><email xlink:type="simple">oks-ishonina@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/0000-0002-9426-9662</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гусарева</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gusareva</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гусарева Марина Александровна – к.м.н., заведующий отдела радиотерапии, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0002-9426-9662, SPIN: 9040-5476, AuthorID: 705242</p></bio><bio xml:lang="en"><p>Marina A. Gusareva – Cand. Sci. (Med.), head of the Radiotherapy Department, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0002-9426-9662, SPIN: 9040-5476, AuthorID: 705242</p></bio><email xlink:type="simple">oncorad@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/0000-0003-0075-6935</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Удаленкова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Udalenkova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Удаленкова Ирина Александровна – к.м.н., врач-онколог отделения противоопухолевой лекарственной терапии, ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации, г. Ростов-на-Дону, Российская Федерация</p><p>ORCID: https://orcid.org/0000-0003-0075-6935, SPIN: 2175-4570, AuthorID: 974753</p></bio><bio xml:lang="en"><p>Irina A. Udalenkova – Cand. Sci. (Med.), MD, oncologist, Department of Tumor Medical Therapy, National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation</p><p>ORCID: https://orcid.org/0000-0003-0075-6935, SPIN: 2175-4570, AuthorID: 974753</p></bio><email xlink:type="simple">fortum10@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУ «Национальный медицинский исследовательский центр онкологии» Министерства здравоохранения Российской Федерации; ФГБОУ ВО «Ростовский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Centre for Oncology; Rostov State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>28</day><month>05</month><year>2024</year></pub-date><volume>5</volume><issue>2</issue><fpage>14</fpage><lpage>24</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Франциянц Е.М., Бандовкина В.А., Сурикова Е.И., Каплиева И.В., Погорелова Ю.А., Нескубина И.В., Трепитаки Л.К., Черярина Н.Д., Ушакова Н.Д., Ишонина О.Г., Гусарева М.А., Удаленкова И.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Франциянц Е.М., Бандовкина В.А., Сурикова Е.И., Каплиева И.В., Погорелова Ю.А., Нескубина И.В., Трепитаки Л.К., Черярина Н.Д., Ушакова Н.Д., Ишонина О.Г., Гусарева М.А., Удаленкова И.А.</copyright-holder><copyright-holder xml:lang="en">Frantsiyants E.M., Bandovkina V.A., Surikova E.I., Kaplieva I.V., Pogorelova Y.A., Neskubina I.V., Trepitaki L.K., Cheryarina N.D., Ushakova N.D., Ishonina O.G., Gusareva M.A., Udalenkova I.A.</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.cancersp.com/jour/article/view/261">https://www.cancersp.com/jour/article/view/261</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Изучение влияния нокаута по гену урокиназы у мышей обоего пола с перевитой меланомой В16/F10 на функционирование звеньев фибринолитической системы.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Были использованы мыши обоего пола: основная группа генмодифицированная линия C57BL/6-Plautm1.1Bug – ThisPlauGFDhu/GFDhu (uPA-/-); группа контроля – линия С57Bl/6 (uPA+/+). Животным по стандартной методике перевивали меланому В16/F10 и через 3 недели роста в 10% гомогенатах опухоли и ее перифокальной зоне ИФА методом определяли уровень: плазминогена (ПГ), плазмина (РАР), рецептора урокиназы uPAR, содержание (АГ) и активность (акт) uPA, t-PA и PAI-I (Cussabio, Китай).</p></sec><sec><title>Результаты</title><p>Результаты. У интактных животных uPA-/- в коже оказалась существенно подавлена, по сравнению с uPA+/+ активность и содержание урокиназы (в 100–860 раз), однако у самок не изменился уровень uPAR, тогда как у самцов снизился в 1,9 раза. Уровень плазмина у uPA-/- мышей был выше в 2,1–4,2 раза, по сравнению с uPA+/+ животными. Рост меланомы В16/F10 у uPA-/- мышей был замедлен, тормозилось метастазирование, однако не увеличивалась продолжительность жизни. Динамика изменений компонентов фибринолитической системы при росте меланомы у uPA-/- мышей отличалась от uPA+/+: в образцах опухоли снижался уровень РАР более чем в 2 раза, не повышался уровень и активность uPA, практически не реагировала PAI, однако, как и у uPA+/+ возрастала активность t-PA в 3,8–8,2 раза.</p></sec><sec><title>Заключение</title><p>Заключение. Несмотря на подавление роста первичного узла опухоли и процессов метастазирования у мышей uPA-/-, средняя продолжительность жизни не увеличивалась, что свидетельствует о сложных механизмах опухолевой болезни и наличии альтернативных биологических путей, позволяющих меланоме прогрессировать в условиях нокаута гена урокиназы.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose of the study</title><p>Purpose of the study. Was to reveal the effect of urokinase gene knockout in male and female mice with transplanted  B16/F10 melanoma on the functions of the fibrinolytic system units.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Male and female mice were used: main group with genetically modified mice C57BL/6-Plautm1. 1Bug – ThisPlauGFDhu/GFDhu (uPA-/-); control group with С57Bl/6 (uPA+/+) mice. B16/F10 melanoma was transplanted by the standard methods to the animals, and levels of plasminogen (PG), plasmin (PAP), urokinase receptor uPAR, content (AG) and activity (act) of uPA, t-P A and PAI-I were measured with ELISA (Cussabio, China) in 10 % tumor homogenates and peritumoral area after 3 weeks of tumor growth.</p></sec><sec><title>Results</title><p>Results. The activity and levels of urokinase in intact uPA-/- animals were significantly (by 100–860 times) inhibited, compared to uPA+/+, but uPAR levels were unchanged in females and were 1.9 times lower in males. PAP levels in uPA-/- mice were 2.1–4.2 times higher than in uPA+/+ animals. The growth of B16/F10 melanoma in uPA-/- mice was slower and metastasizing was suppressed, but their survival was not improved. The dynamics of changes in components of the fibrinolytic system in presence of melanoma growth differed in uPA-/- mice, compared to uPA+/+ animals: PAP levels in tumor samples decreased by over 2 times, uPA levels and activity were not increased, PAI was practically unchanged, but activity of t-P A elevated by 3.8–8.2 times, as well as in uPA+/+ mice.</p></sec><sec><title>Conclusion</title><p>Conclusion. Despite the suppression of the growth and metastasis of the primary tumor nodes in uPA-/- mice, their average survival was not improved, which indicates that the mechanisms of tumor are complex and there are alternative biological pathways supporting melanoma to survive in conditions of the urokinase gene knockout.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>нокаут по гену урокиназы</kwd><kwd>мыши</kwd><kwd>меланома В16/F10</kwd><kwd>фибринолитическая система</kwd></kwd-group><kwd-group xml:lang="en"><kwd>urokinase gene knockout</kwd><kwd>mice</kwd><kwd>melanoma B16/F10</kwd><kwd>fibrinolytic system</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ismail AA, Shaker BT, Bajou K. The Plasminogen-Activator Plasmin System in Physiological and Pathophysiological Angiogenesis. 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