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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">sibsutis</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник СибГУТИ</journal-title><trans-title-group xml:lang="en"><trans-title>The Herald of the Siberian State University of Telecommunications and Information Science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6920</issn><publisher><publisher-name>СибГУТИ</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">sibsutis-88</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Использование графических ускорителей для выявления функциональных сигналов в регуляторных районах дифференциально экспрессирующихся генов AGRP нейронов гипоталамуса мыши в ответ на голодание</article-title><trans-title-group xml:lang="en"><trans-title>GPU-based algorithm for context analysis of the core promoter region of mouse genes  differently expressed in hypothalamic energy-sensing neurons in response to weight-loss</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бочарников</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bocharnikov</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бочарников Андрей Васильевич, аспирант</p><p>630090, Новосибирск, пр. Академика Лаврентьева, 6</p></bio><email xlink:type="simple">andrey.bocharnikov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Игнатьева</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ignatieva</surname><given-names>E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игнатьева Елена Васильевна, к.б.н, старший научный сотрудник, Институт цитологии и генетики СО РАН; доцент, Новосибирский государственный университет</p><p>630090, Новосибирск, пр. Академика Лаврентьева, 10</p></bio><email xlink:type="simple">eignat@bionet.nsc.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вишневский</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vishenvskiy</surname><given-names>O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вишневский Олег Владимирович, к.б.н, научный сотрудник, Институт цитологии и генетики СО РАН; ст. преподаватель, Новосибирский государственный университет</p><p>630090, Новосибирск, пр. Академика Лаврентьева, 10</p></bio><email xlink:type="simple">oleg@bionet.nsc.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Институт систем информатики им. А. П. Ершова СО РАН</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>Институт цитологии и генетики СО РАН; Новосибирский  государственный  университет</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-3"><institution>Институт цитологии и генетики СО РАН; Новосибирский государственный университет</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>19</day><month>04</month><year>2022</year></pub-date><volume>0</volume><issue>3</issue><fpage>36</fpage><lpage>44</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бочарников А.В., Игнатьева Е.В., Вишневский О.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Бочарников А.В., Игнатьева Е.В., Вишневский О.В.</copyright-holder><copyright-holder xml:lang="en">Bocharnikov A., Ignatieva E., Vishenvskiy O.</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://vestnik.sibsutis.ru/jour/article/view/88">https://vestnik.sibsutis.ru/jour/article/view/88</self-uri><abstract><p>Выявление de novo контекстных сигналов в регуляторных районах генов эукариот существенно затрудняется как огромными объемами анализируемых выборок последовательностей, так и гигантским разнообразием контекстных сигналов. Нами предложен новый алгоритм оценки представленности вырожденных олигонуклеотидных мотивов, записанных в 15-буквенном IUPAC коде, в выборке нуклеотидных последовательностей и показана его высокая производительность по сравнению с ранее предложенным подходом. Данный метод основан, во-первых, на использовании деревьев префиксов, во-вторых, на соответствии префиксов мотивов диапазонам хешей в хешированных нуклеотидных последовательностях анализируемой выборки и, в-третьих, на технологии CUDA, позволяющей использовать для массового параллельного счета графические ускорители, широкодоступные для исследователей.</p><p>Предложенный подход был использован для проведения контекстного анализа промоторных областей генов мыши с достоверно изменившейся после лишения пищи экспрессией в AGRP (Agouti Related Peptide) нейронах гипоталамуса. Когда животное лишено пищи, так называемые AGRP нейроны гипоталамуса вырабатывают молекулы, которые повышают аппетит и облегчают набор веса. Понимание клеточных механизмов, лежащих в основе функционирования нейронов AGRP в ответ на потерю веса, необходимо для разработки методов борьбы с ожирением, которое является наследственным заболеванием, имеющим лишь несколько безопасных и долгосрочных эффективных методов лечения и стратегий вмешательства. Проведенный нами анализ выявил значимые олигонуклеотидные мотивы, ассоциированные с голоданием.</p></abstract><trans-abstract xml:lang="en"><p>De novo motif discovery in the regulatory regions of eukaryotic genes poses a complex computational problem due to the large size of datasets and huge diversity of motifs. This article suggests a new algorithm for measuring the presence of degenerate oligonucleotide motifs written as a 15-letter IUPAC code in a DNA dataset. Its performance has increased 10 times compared with the previous one. There are three key ingredients of this method. The first one is the prefix trees. The second is the relation between motif prefixes and hash ranges in the analyzed nucleotide sequences. The third consists of applying CUDA framework to the massive parallelization allowing to use affordable graphic accelerators.</p><p>The context analysis of promoter regions of mouse genes differently expressed (DEG) in hypothalamic AGRP neurons after food deprivation was performed with the proposed method. When an animal is deprived of food, AGRP neurons produce molecules that increase appetite and stimulate weight gain. The understanding of how AGRP neurons respond to weight loss is important to confront the obesity. Nowadays, this hereditary disease lacks methods of treatment and intervention strategies which would be both safe and efficient in the long term. The performed analysis revealed relevant oligonucleotide motifs that were associated with starvation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>олигонуклеотидный мотив</kwd><kwd>GPGPU</kwd><kwd>ожирение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>oligonucleotide motif</kwd><kwd>GPGPU</kwd><kwd>obesity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа поддержана бюджетным проектом № 0324-2019-0040.</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">Pesole G, Liuni S, Dsouza M. PatSearch: A pattern matcher sontware that finds functional elements in nucleotide and protein sequences and assesses their statistical significance // Bioinformatics. 2000. V. 16, № 5. P. 439–450.</mixed-citation><mixed-citation xml:lang="en">Pesole G, Liuni S, Dsouza M. 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