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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">vetpress</journal-id><journal-title-group><journal-title xml:lang="ru">Аграрная наука</journal-title><trans-title-group xml:lang="en"><trans-title>Agrarian science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-8155</issn><issn pub-type="epub">2686-701X</issn><publisher><publisher-name>Редакция журнала "Аграрная наука"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32634/0869-8155-2025-394-05-89-94</article-id><article-id custom-type="elpub" pub-id-type="custom">vetpress-3625</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>ЗООТЕХНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ZOOTECHNICS</subject></subj-group></article-categories><title-group><article-title>ДНК-технологии идентификации аллелей и генотипов полиморфных маркеров анализируемого локуса гена iNOS Bos taurus</article-title><trans-title-group xml:lang="en"><trans-title>DNA technologies for identification of alleles and genotypes of polymorphic markers of the analyzed locus of the Bos taurus iNOS gene</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0914-0053</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вафин</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Vafin</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рамиль Ришадович Вафин, доктор биологических наук, профессор РАН, научный консультант</p><p>Рязанский пр-т, 24, Москва, 109428</p></bio><bio xml:lang="en"><p>Ramil Rishadovich Vafin, Doctor of Biological Sciences, Professor of RAS, Scientific Consultant</p><p>24 Ryazan Ave., Moscow, 109428</p></bio><email xlink:type="simple">vafin-ramil@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/0000-0001-7053-6925</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гильманов</surname><given-names>Х. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Gilmanov</surname><given-names>Kh. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хамид Халимович Гильманов, кандидат биологических наук, старший научный сотрудник</p><p>Рязанский пр-т, 24, Москва, 109428</p></bio><bio xml:lang="en"><p>Khamid Khalimovich Gilmanov, Candidate of Biological Sciences, Senior Researcher</p><p>24 Ryazan Ave., Moscow, 109428</p></bio><email xlink:type="simple">gilmanov.xx@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный научный центр — Всероссийский научно-исследовательский институт экспериментальной ветеринарии им. К.И. Скрябина и Я.Р. Коваленко РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Scientific Centre VIEV</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>16</day><month>05</month><year>2025</year></pub-date><volume>0</volume><issue>5</issue><fpage>89</fpage><lpage>94</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вафин Р.Р., Гильманов Х.Х., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Вафин Р.Р., Гильманов Х.Х.</copyright-holder><copyright-holder xml:lang="en">Vafin R.R., Gilmanov K.K.</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.vetpress.ru/jour/article/view/3625">https://www.vetpress.ru/jour/article/view/3625</self-uri><abstract><p>Актуальной областью исследования генетико-селекционной направленности, в долгосрочной перспективе необходимой для воспроизводства высокопродуктивного стада крупного рогатого скота с генетической устойчивостью к лейкозу, является изучение полиморфизма гена iNOS Bos taurus в ассоциативной связи с племенной ценностью животных и их резистентностью к указанному хроническому инфекционному заболеванию.</p><p>Цель  настоящего  исследования заключалась в разработке ДНК-технологий идентификации аллелей и генотипов SNP-маркеров гена iNOS  Bos  taurus детекцией и интерпретацией диагностически значимых однонуклеотидных полиморфизмов на основе смоделированных способов проведения вложенной ПЦР с dCAPS-праймерами и SNP-генотипирования анализом данных прямого секвенирования ПЦР-продукта. Конструирование dCAPS праймеров iNOS-F1 и iNOS-R1 выполнено с использованием программного обеспечения dCAPS Finder 2.0 и OligoAnalyzer 1.2. Картирование полиморфных сайтов рестрикции и расчет ПЦР-ПДРФ-профилей возможных генотипов SNP-маркеров осуществлены с применением онлайн-программы NEBcutter V2.0. Сконструированные dCAPS-праймеры успешно протестированы при постановке вложенной ПЦР в статусе внутренних пар олигонуклеотидов с последующей процедурой эндонуклеазного расщепления амплификата 2-го раунда ПЦР длиной 123 bp подобранными рестриктазами, идентификационно значимыми для определенного полиморфного маркера. Амплификат 1-го раунда ПЦР длиной 258 bp был подвергнут капиллярному секвенированию ДНК по Сэнгеру для детекции и интерпретации диагностически значимых однонуклеотидных полиморфизмов в контексте идентификации аллелей и генотипов SNP-маркеров. ДНК-технологии, использованные в данной работе, оказались действенными подходами к корректному генотипированию крупного рогатого скота по SNP-маркерам гена iNOS.</p></abstract><trans-abstract xml:lang="en"><p>The current area of research in genetic and selection focus, which is necessary in the long term for the reproduction of a highly productive herd of cattle with genetic resistance to leukemia, is the study of the polymorphism of the Bos taurus iNOS gene of in association with the breeding value of animals and their resistance to this chronic infectious disease. The aim of.this study was to develop DNA technologies for identification of alleles and genotypes of SNP markers of the Bos taurus iNOS gene by detection and interpretation of diagnostically significant single nucleotide polymorphisms based on simulated methods of nested PCR with dCAPS primers and SNP genotyping by analysis of direct sequencing data of the PCR product. Construction of dCAPS primers iNOS-F1 and iNOS-R1 was performed using dCAPS Finder 2.0 and OligoAnalyzer 1.2 software. Mapping of polymorphic restriction sites and calculation of PCR-RFLP profiles of possible genotypes of SNP markers were performed using the NEBcutter V2.0 online program. The constructed dCAPS primers were successfully tested in nested PCR as internal oligonucleotide pairs followed by endonuclease digestion of the 123 bp PCR amplification product of the second round with selected restriction enzymes that were significant for identification of a particular polymorphic marker. The 258 bp PCR amplification product of the first round was subjected to capillary DNA sequencing according to Sanger for detection and interpretation of diagnostically significant single nucleotide polymorphisms in the context of identification of alleles and genotypes of SNP markers. The DNA technologies used in this work turned out to be effective approaches to correct genotyping of cattle by SNP markers of the iNOS gene.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>iNOS</kwd><kwd>Bos taurus</kwd><kwd>SNP-маркеры</kwd><kwd>ПЦР</kwd><kwd>ПДРФ</kwd><kwd>секвенирование</kwd><kwd>генотипирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>iNOS</kwd><kwd>Bos taurus</kwd><kwd>SNP markers</kwd><kwd>PCR</kwd><kwd>RFLP</kwd><kwd>sequencing</kwd><kwd>genotyping</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 22-76-10011. https://rscf.ru/project/22-76-10011/</funding-statement><funding-statement xml:lang="en">This research was funded by Russian Science Foundation No. 22-76-10011. https://rscf.ru/project/22-76-10011/</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">Zhang W. et al. 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