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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">surgumed</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник СурГУ. Медицина</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik SurGU. Meditsina</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2949-3447</issn><publisher><publisher-name>Сургутский государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35266/2949-3447-2025-1-9</article-id><article-id custom-type="elpub" pub-id-type="custom">surgumed-834</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>МЕДИКО-БИОЛОГИЧЕСКИЕ НАУКИ. ОРИГИНАЛЬНОЕ ИССЛЕДОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LIFE SCIENCES. ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>МЕТОД СЕКВЕНИРОВАНИЯ И АЛГОРИТМ АНАЛИЗА ПРОФИЛЕЙ МЕТИЛИРОВАНИЯ НА ОСНОВАНИИ ДАННЫХ NGS-СЕКВЕНИРОВАНИЯ ДЛЯ ВЫЯВЛЕНИЯ ОДНОРОДИТЕЛЬСКИХ ДИСОМИЙ</article-title><trans-title-group xml:lang="en"><trans-title>SEQUENCING METHOD AND ALGORITHM FOR ANALYZING METHYLATION PROFILES BASED ON NGS DATA TO IDENTIFY UNIPARENTAL DISOMY</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-7015-1208</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сучко</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Suchko</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>магистрант</p><p> </p></bio><bio xml:lang="en"><p>Master`s Degree Student</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/0000-0002-0028-9727</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Некрасова</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nekrasova</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> биоинформатик</p></bio><bio xml:lang="en"><p>Bioinformatician</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0120-4163</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Донников</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Donnikov</surname><given-names>M. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>врач – лабораторный генетик, кандидат медицинских наук, ведущий научный сотрудник</p></bio><bio xml:lang="en"><p>Laboratory Geneticist, Candidate of Sciences (Medicine), Leading Researcher</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0091-2224</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Глотов</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Glotov</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор биологических наук, заведующий отделом экспериментальной медицинской вирусологии, молекулярной генетики и биобанкинга</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Biology), Head of the Department of Experimental Medical Virology, Molecular Genetics and Biobanking</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4479-3095</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Данилов</surname><given-names>Л. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Danilov</surname><given-names>L. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник</p></bio><bio xml:lang="en"><p>Junior Researcher</p></bio><email xlink:type="simple">ldanilov@spbu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный университет, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Peterburg State University, Saint Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «Сербалаб», Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>LLC “Serbalab”, Saint Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Сургутский государственный университет, Сургут</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Surgut State University, Surgut</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Детский научно-клинический центр инфекционных болезней Федерального медико-биологического агентства, Санкт-Петербург;&#13;
Научно-исследовательский институт акушерства, гинекологии и репродуктологии им. Д. О. Отта, Санкт-Петербург</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pediatric Research and Clinical Center for Infectious Diseases under the Federal Medical Biological Agency;&#13;
The Research Institute of Obstetrics, Gynecology and Reproductology named after D. O. Ott, Saint Petersburg</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>04</day><month>04</month><year>2025</year></pub-date><volume>18</volume><issue>1</issue><fpage>73</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сучко П.А., Некрасова Д.А., Донников М.Ю., Глотов О.С., Данилов Л.Г., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Сучко П.А., Некрасова Д.А., Донников М.Ю., Глотов О.С., Данилов Л.Г.</copyright-holder><copyright-holder xml:lang="en">Suchko P.A., Nekrasova D.A., Donnikov M.Y., Glotov O.S., Danilov L.G.</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.surgumed.ru/jour/article/view/834">https://www.surgumed.ru/jour/article/view/834</self-uri><abstract><p>Однородительская дисомия – аномалия, при которой обе гомологичные хромосомы наследуются от одного родителя. Патологические эффекты рассматриваемой аномалии связаны с нарушениями импринтинга и потерей гетерозиготности. Классические методы диагностики, такие как микросателлитный анализ и хромосомный матричный анализ, имеют ограничения при диагностике аномалии в неполных семьях и мозаичных случаях. Цель данного исследования – оценка потенциальной эффективности метода диагностики однородительских дисомий хромосом и нарушений импринтинга на основании профилирования метилирования ДНК по данным секвенирования нового поколения. В частности, был модифицирован метод пробоподготовки библиотек геномной ДНК с использованием метилзависимой эндонуклеазы GlaI в сочетании с эндонуклеазой рестрикции Bst2UI для увеличения информативности анализа, а также разработан биоин-форматический алгоритм обработки данных. Метод был протестирован на клиническом случае реципрокной транслокации (3;19)(q12;q13.3) по материнской линии с подозрением на сегментарную однородительскую дисомию у пробанда. Модификация протокола пробоподготовки позволила достичь охвата около 5 млн сайтов метилирования. Биоинформатический анализ включал определение статуса метилирования клинически значимых областей контроля импринтинга и поиск областей гомозиготности. Метод позволил охватить 2/3 потенциальных   областей контроля импринтинга. Признаков однородительской дисомии у пробанда обнаружено не было, что согласуется с результатами хромосомного матричного анализа. Несмотря на то что подход представляет собой экономически эффективную альтернативу полногеномному бисульфитному секвенированию, остаются нерешенными проблемы с нормализацией получаемых относительных уровней метилирования. В дальнейшем планируется провести валидацию разработанного на биологических образцах с подтвержденными случаями однородительской дисомии, чтобы сделать однозначный вывод о его пригодности для идентификации рассматриваемых аномалий.</p></abstract><trans-abstract xml:lang="en"><p>Uniparental disomy is an anomaly where both homologous chromosomes are inherited from the same parent. The pathological effects of this anomaly are associated with imprinting disorders and loss of heterozygosity. Traditional diagnostic methods, such as simple sequence repeats analysis and chromosomal microarray analysis, have limitations in diagnosing the anomaly in single-parent households and mosaic cases. The aim of this study is to evaluate the potential effectiveness of a diagnostic method for uniparental disomy and imprinting disorders based on DNA methylation profiling using next-generation sequencing data. In particular, a genomic DNA bank sample preparation was modified using the methyl-dependent endonuclease GlaI in combination with the restriction endonuclease Bst2UI to improve its informativeness. In addition, bioinformatic analysis algorithm was developed. The method was tested on a clinical case of maternal reciprocal translocation (3;19)(q12;q13.3) with suspected segmental uniparental disomy in the proband. Modification of the bank sample preparation protocol provided the coverage of approximately 5 million methylation sites. Bioinformatic analysis included definition of methylation status in clinically significant imprinting control regions and the search for regions of homozygosity. The method enabled the coverage of 2/3 of potential imprinting control regions. No signs of uniparental disomy were found in the proband, which is consistent with the results of chromosomal microarray analysis. Although the approach represents a cost-effective alternative to genomewide bisulfite sequencing, problems with normalizing the relative methylation levels remain. Further validation of biologically developed method on confirmed uniparental disomy cases is planned to definitively assess itssuitability for identifying anomalies.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>однородительская дисомия</kwd><kwd>метилирование ДНК</kwd><kwd>NGS</kwd><kwd>геномный импринтинг</kwd></kwd-group><kwd-group xml:lang="en"><kwd>uniparental disomy</kwd><kwd>DNA methylation</kwd><kwd>NGS</kwd><kwd>genomic imprinting</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">работа выполнена при поддержке гранта №2023-569-05 Ханты-Мансийского автоном- ного округа – Югры</funding-statement><funding-statement xml:lang="en">the work was supported by the grant No. 2023-569-05 of Khanty-Mansi Autonomous Okrug – Yugra</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">Del Gaudio D., Shinawi M., Astbury C. et al. 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