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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">epidemiology</journal-id><journal-title-group><journal-title xml:lang="ru">Эпидемиология и Вакцинопрофилактика</journal-title><trans-title-group xml:lang="en"><trans-title>Epidemiology and Vaccinal Prevention</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-3046</issn><issn pub-type="epub">2619-0494</issn><publisher><publisher-name>«Numicom» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31631/2073-3046-2024-23-6-114-128</article-id><article-id custom-type="elpub" pub-id-type="custom">epidemiology-2127</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>ПРАКТИЧЕСКИЕ АСПЕКТЫ ЭПИДЕМИОЛОГИИ И ВАКЦИНОПРОФИЛАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PRACTICAL ASPECTS OF EPIDEMIOLOGY AND VACCINE PREVENTION</subject></subj-group></article-categories><title-group><article-title>Оптимизация метода выявления единичных копий ДНК вируса гепатита B с помощью систем CRISPR/Cas</article-title><trans-title-group xml:lang="en"><trans-title>Optimization of a Method for Detecting Single copies of Hepatitis B Virus DNA using CRISPR/Cas systems</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3145-3702</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюменцева</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyumentseva</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Марина Алексеевна Тюменцева – к. б. н., заведующая лабораторией геномного редактирования</p><p>+7 (495) 974-96-46 (доб. 2627)</p></bio><bio xml:lang="en"><p>Marina A. Tyumentseva – Cand. Sci. (Biol.), Head of the Laboratory of Genome Editing of the OMD&amp;E,</p><p>Moscow</p><p>+7 (495) 974-96-46 (ext. 2627)</p></bio><email xlink:type="simple">tyumentseva@cmd.su</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0537-2586</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюменцев</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyumentsev</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Игоревич Тюменцев – к. б. н., заведующий лабораторией экспериментальной фармакологии ОМДиЭ</p><p>Москва</p><p>+7 (495) 974-96-46 (доб. 2627)</p></bio><bio xml:lang="en"><p>Aleksandr I. Tyumentsev – Cand. Sci. (Biol.), Head of the Laboratory of Experimental Pharmacology of the OMD&amp;E</p><p>Moscow</p><p>+7 (495) 974-96-46 (ext. 2627)</p></bio><email xlink:type="simple">tymencev@cmd.su</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2471-3844</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Преловская</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Prelovskaya</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Николаевна Преловская – научный сотрудник лаборатории геномного редактирования ОМДиЭ</p><p>Москва</p><p>+7 (495) 974-96-46 (доб. 2627)</p></bio><bio xml:lang="en"><p>Anna N. Prelovskaya – researcher at the Laboratory of Genome Editing of the OMD&amp;E</p><p>Moscow</p><p>+7 (495) 974-96-46 (ext. 2627)</p></bio><email xlink:type="simple">prelovskaya@cmd.su</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4228-9044</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акимкин</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Akimkin</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Василий Геннадьевич Акимкин – академик РАН, д. м. н., профессор, директор</p><p>Москва</p><p>+7 (495) 974-96-46 (доб. 2627)</p></bio><bio xml:lang="en"><p>Vasily G. Akimkin – Academician of the Russian Academy of Sciences, Dr. Sci. (Med.), Professor, Director</p><p>Moscow</p><p>+7 (495) 974-96-46 (ext. 2627)</p></bio><email xlink:type="simple">akimkin@pcr.ms</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФБУН «ЦНИИ Эпидемиологии» Роспотребнадзора</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Central Research Institute of Epidemiology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>15</day><month>01</month><year>2025</year></pub-date><volume>23</volume><issue>6</issue><fpage>114</fpage><lpage>128</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тюменцева М.А., Тюменцев А.И., Преловская А.Н., Акимкин В.Г., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Тюменцева М.А., Тюменцев А.И., Преловская А.Н., Акимкин В.Г.</copyright-holder><copyright-holder xml:lang="en">Tyumentseva M.A., Tyumentsev A.I., Prelovskaya A.N., Akimkin V.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.epidemvac.ru/jour/article/view/2127">https://www.epidemvac.ru/jour/article/view/2127</self-uri><abstract><p>Актуальность. Вирус гепатита B (ВГВ) является этиологическим агентом острого и хронического течения гепатита B у людей. ВОЗ рекомендует использовать чувствительные лабораторные анализы на основе методов амплификации нуклеиновых кислот для определения ДНК ВГВ. Для ультрачувствительного определения ДНК ВГВ ранее был разработан метод выявления единичных копий ДНК вируса гепатита B с помощью систем CRISPR/Cas.Цель. Оптимизировать метод выявления единичных копий ДНК вируса гепатита B с помощью систем CRISPR/Cas.Материалы и методы. Для получения амплифицированных фрагментов генома ВГВ было разработано 22 олигонуклеотида. Этап предварительной амплификации проводили методом рекомбиназной полимеразной амплификации с использованием разработанных олигонуклеотидов. Получение рибонуклеопротеиновых комплексов CRISPR/Cas, специфических к фрагментам генома ВГВ, проводили с использованием синтетических направляющих РНК (олигорибонуклеотиды). Этап детекции осуществляли в HOLMES 1.Результаты. При проведении работ по оптимизации метода выявления ДНК ВГВ нам удалось сохранить чувствительность оптимизированного метода на уровне исходного (выявление единичных копий ДНК ВГВ). Кроме того, при проведении оптимизации у нас получилось сократить время, необходимое для проведения анализа. Так, для выявления единичных копий (6 копий в реакции) ДНК ВГВ с помощью исходного метода необходимо 83 минуты, тогда как для оптимизированного – 32 минуты.Заключение. Описанный в статье оптимизированный метод выявления единичных копий ДНК ВГВ с помощью систем CRISPR/Cas в перспективе может быть использован для разработки новых диагностических наборов для выявления ДНК вируса гепатита B, в том числе применимых у постели больного и/или в полевых условиях.</p></abstract><trans-abstract xml:lang="en"><p>Relevance. Hepatitis B virus (HBV) is the etiologic agent of acute and chronic hepatitis B in humans. WHO recommends the use of sensitive laboratory assays based on nucleic acid amplification methods to detect HBV DNA. A method for detecting single copies of hepatitis B virus DNA using CRISPR/Cas systems was previously developed for ultrasensitive detection of HBV DNA.Aims. The aim of present study was to optimize the method for detecting single copies of hepatitis B virus DNA using CRISPR/Cas systems.Materials and methods. To obtain amplified fragments of the hepatitis B virus genome, 22 oligonucleotides were developed. The preliminary amplification stage was performed by the RPA method using the developed oligonucleotides. The assembly of CRISPR/ Cas ribonucleoprotein complexes specific for fragments of the hepatitis B virus genome was carried out using synthetic guide RNA (oligoribonucleotides). The detection stage was performed in HOLMES 1.Results and discussion. We maintained the sensitivity of the optimized method at the level of the original one (detection of single copies of hepatitis B virus DNA), when optimizing the method for detecting hepatitis B virus DNA. In addition, we reduced the time required for the analysis. Thus, the time required to detect single copies (6 copies per reaction) of hepatitis B virus DNA using the original method is 83 minutes, while for the optimized method it is 32 minutes.Conclusions. The optimized method for detecting single copies of hepatitis B virus DNA using CRISPR/Cas systems described in the article can be used in the future to develop new diagnostic kits, including point-of-care kits and/or kits to use in the field.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вирус гепатита B (ВГВ)</kwd><kwd>ДНК</kwd><kwd>ПЦР</kwd><kwd>рекомбиназная полимеразная амплификация (RPA)</kwd><kwd>CRISPR/Cas</kwd><kwd>детекция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hepatitis B virus</kwd><kwd>DNA</kwd><kwd>PCR</kwd><kwd>recombinase polymerase amplification</kwd><kwd>CRISPR/Cas</kwd><kwd>detection</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">Yuen MF, Chen DS, Dusheiko GM, et al. Hepatitis B virus infection. 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