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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Genetics</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0016-6758</issn><issn publication-format="electronic">3034-5103</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">667195</article-id><article-id pub-id-type="doi">10.31857/S0016675824090033</article-id><article-id pub-id-type="edn">aezrho</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>МОЛЕКУЛЯРНАЯ ГЕНЕТИКА</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Combination of histological and transcriptomic approaches for cell types annotation in non-model organisms by example of spiny mice <italic>Acomys cahirinus</italic></article-title><trans-title-group xml:lang="ru"><trans-title>Комбинирование гистологического и транскриптомного подходов для аннотации клеточных типов немодельных организмов на примере иглистых мышей <italic>Acomys cahirinus</italic></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Filatov</surname><given-names>N. S.</given-names></name><name xml:lang="ru"><surname>Филатов</surname><given-names>Н. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bilyalov</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Билялов</surname><given-names>А. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gazizova</surname><given-names>G. R.</given-names></name><name xml:lang="ru"><surname>Газизова</surname><given-names>Г. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bilyalova</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Билялова</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shagimardanova</surname><given-names>E. I.</given-names></name><name xml:lang="ru"><surname>Шагимарданова</surname><given-names>Е. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vorontsova</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Воронцова</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kiyasov</surname><given-names>A. P.</given-names></name><name xml:lang="ru"><surname>Киясов</surname><given-names>А. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff9"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gusev</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Гусев</surname><given-names>О. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff6"/><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kozlova</surname><given-names>O. S.</given-names></name><name xml:lang="ru"><surname>Козлова</surname><given-names>О. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olga-sphinx@yandex.ru</email><xref ref-type="aff" rid="aff9"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Kazan (Volgaregion) Federal University</institution></aff><aff><institution xml:lang="ru">Казанский (Приволжский) федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Loginov Moscow Clinical Scientific Center</institution></aff><aff><institution xml:lang="ru">Московский клинический научный центр им. А.С. Логинова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Kazan (Volgaregion) Federal University,  Russia 2Loginov Moscow Clinical Scientific Center,</institution></aff><aff><institution xml:lang="ru">Казанский (Приволжский) федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="ru">Московский клинический научный центр им. А.С. Логинова</institution></aff><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution></aff><aff><institution xml:lang="en">Kazan (Volgaregion) Federal University</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Juntendo University School of Medicine</institution></aff><aff><institution xml:lang="ru">Казанский (Приволжский) федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff7"><aff><institution xml:lang="en">LIFT Center LLC</institution></aff><aff><institution xml:lang="ru">Медицинский факультет университета Джунтендо</institution></aff></aff-alternatives><aff-alternatives id="aff8"><aff><institution xml:lang="ru">ООО “ЛИФТ центр”</institution></aff><aff><institution xml:lang="en">Kazan (Volgaregion) Federal University</institution></aff></aff-alternatives><aff id="aff9"><institution>Казанский (Приволжский) федеральный университет</institution></aff><pub-date date-type="pub" iso-8601-date="2024-09-10" publication-format="electronic"><day>10</day><month>09</month><year>2024</year></pub-date><volume>60</volume><issue>9</issue><fpage>16</fpage><lpage>24</lpage><history><date date-type="received" iso-8601-date="2025-02-26"><day>26</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0016-6758/article/view/667195">https://transsyst.ru/0016-6758/article/view/667195</self-uri><abstract xml:lang="en"><p>In mammals, cartilage tissue has a low potential for regeneration. Typically, the defect site is replaced by connective tissue. The <italic>Acomys cahirinus</italic> mouse is a relatively new model for studying tissue regeneration processes, specifically the elastic cartilage of the auricle. To investigate the molecular genetic mechanisms responsible for these processes and gain insight into the cellular and tissue composition of the intact auricle, we utilized the method of single-cell RNA sequencing (scRNA-seq). This method enables quantification of gene expression in the sample and modeling of cell clustering based on expression profiles. This allows for assessment of sample heterogeneity in terms of specific cell populations. Annotation of cell types, particularly in non-model organisms, should be supported by classical morphological studies to allow for more detailed identification of cell populations. This is necessary to separate clusters of cells that are grouped statistically based on similar expression profiles of a group of genes into smaller subpopulations. The objective of this study was to annotate all cell types present in the intact <italic>Acomys cahirinus</italic> auricle using a combination of transcriptomic approaches and classical histology methods. The study resulted in the annotation of 24 cell clusters based on known marker genes and by comparing genetic and morphological data.</p></abstract><trans-abstract xml:lang="ru"><p>Хрящевая ткань у млекопитающих обладает низким потенциалом к восстановлению, как правило, место дефекта замещается соединительной тканью. Мышь <italic>Acomys cahirinus</italic> является одной из сравнительно новых моделей для изучения процессов регенерации тканей, в том числе эластического хряща ушной раковины. Для изучения молекулярно-генетических механизмов, ответственных за эти процессы, и получения базового представления о клеточном и тканевом составе интактной ушной раковины нами был выбран метод секвенирования РНК единичных клеток (scRNA-seq). Данный метод позволяет не просто количественно определить уровень экспрессии генов в образце в целом, но и смоделировать кластеризацию клеток в зависимости от профилей экспрессии, оценив тем самым гетерогенность образца с точки зрения присутствия в нем конкретных клеточных популяций. Подобная аннотация клеточных типов, особенно в случае немодельных организмов, нуждается в поддержке со стороны классических морфологических исследований, позволяющих более детально идентифицировать клеточные популяции, например разделять кластеры клеток, сгруппированные по статистическому принципу (на основании схожих профилей экспрессии группы генов), на более мелкие субпопуляции. Цель работы – проведение аннотации всех клеточных типов интактной ушной раковины <italic>Acomys cahirinus</italic>, используя комбинацию транскриптомного подхода и классических методов гистологии. В результате исследования, основываясь на известных маркерных генах, а также сопоставляя генетические и морфологические данные, были проаннотированы 24 клеточных кластера.</p></trans-abstract><kwd-group xml:lang="en"><kwd>single cell sequencing</kwd><kwd>Acomys cahirinus</kwd><kwd>cell types annotation</kwd><kwd>regeneration</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>секвенирование единичных клеток</kwd><kwd>Acomys cahirinus</kwd><kwd>аннотация клеточных типов</kwd><kwd>регенерация</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science and Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>075-15-2021-1344</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Maden M., Varholick J.A. 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