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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">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">27494</article-id><article-id pub-id-type="doi">10.32607/actanaturae.27494</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Research Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные статьи</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">Peptide Mimicking Loop II of the Human Epithelial Protein SLURP-2 Enhances the Viability and Migration of Skin Keratinocytes</article-title><trans-title-group xml:lang="ru"><trans-title>Пептид, имитирующий петлю II эпителиального белка человека SLURP-2, повышает жизнеспособность и стимулирует миграцию кератиноцитов кожи</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shlepova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Шлепова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lyukmanova_ekaterina@smbu.edu.cn</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gornostaeva</surname><given-names>T. Y.</given-names></name><name xml:lang="ru"><surname>Горностаева</surname><given-names>Т. Я.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lyukmanova_ekaterina@smbu.edu.cn</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>Kukushkin</surname><given-names>I. D.</given-names></name><name xml:lang="ru"><surname>Кукушкин</surname><given-names>И. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lyukmanova_ekaterina@smbu.edu.cn</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>Azev</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Азев</surname><given-names>В. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lyukmanova_ekaterina@smbu.edu.cn</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bychkov</surname><given-names>M. L.</given-names></name><name xml:lang="ru"><surname>Бычков</surname><given-names>М. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lyukmanova_ekaterina@smbu.edu.cn</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shenkarev</surname><given-names>Z. O.</given-names></name><name xml:lang="ru"><surname>Шенкарев</surname><given-names>З. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lyukmanova_ekaterina@smbu.edu.cn</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>Kirpichnikov</surname><given-names>M. P.</given-names></name><name xml:lang="ru"><surname>Кирпичников</surname><given-names>М. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Interdisciplinary Scientific and Educational School of Moscow University “Molecular Technologies of the Living Systems and Synthetic Biology”, Department of Biology</p></bio><bio xml:lang="ru"><p>Междисциплинарная научно-образовательная школа «Молекулярные технологии живых систем и синтетическая биология», биологический факультет</p></bio><email>lyukmanova_ekaterina@smbu.edu.cn</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lyukmanova</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Люкманова</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Interdisciplinary Scientific and Educational School of Moscow University “Molecular Technologies of the Living Systems and Synthetic Biology”, Department of Biology</p></bio><bio xml:lang="ru"><p>Междисциплинарная научно-образовательная школа «Молекулярные технологии живых систем и синтетическая биология», биологический факультет</p></bio><email>lyukmanova_ekaterina@smbu.edu.cn</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff5"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry</institution></aff><aff><institution xml:lang="ru">Государственный научный центр Российской Федерации Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Moscow Center for Advanced Studies</institution></aff><aff><institution xml:lang="ru">Московский центр перспективных исследований</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Branch of the Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry</institution></aff><aff><institution xml:lang="ru">Филиал Института биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Shenzhen MSU–BIT University</institution></aff><aff><institution xml:lang="ru">Шеньчжэньский МГУ-ППИ университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-09" publication-format="electronic"><day>09</day><month>12</month><year>2024</year></pub-date><volume>16</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>86</fpage><lpage>94</lpage><history><date date-type="received" iso-8601-date="2024-08-16"><day>16</day><month>08</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-11-07"><day>07</day><month>11</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Викторовна O.V., Gornostaeva T.Y., Kukushkin I.D., Chulina I., Azev V.N., Bychkov M.L., Shenkarev Z.O., Kirpichnikov M.P., Lyukmanova E.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Шлепова О.В., Горностаева Т.Я., Кукушкин И.Д., Чулина И.А., Азев В.Н., Бычков М.Л., Шенкарев З.О., Кирпичников М.П., Люкманова Е.Н.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Викторовна O.V., Gornostaeva T.Y., Kukushkin I.D., Chulina I., Azev V.N., Bychkov M.L., Shenkarev Z.O., Kirpichnikov M.P., Lyukmanova E.N.</copyright-holder><copyright-holder xml:lang="ru">Шлепова О.В., Горностаева Т.Я., Кукушкин И.Д., Чулина И.А., Азев В.Н., Бычков М.Л., Шенкарев З.О., Кирпичников М.П., Люкманова Е.Н.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://actanaturae.ru/2075-8251/article/view/27494">https://actanaturae.ru/2075-8251/article/view/27494</self-uri><abstract xml:lang="en"><p>The secreted human protein SLURP-2 is a regulator of epithelial homeostasis, which enhances the viability and migration of keratinocytes. The targets of SLURP-2 in keratinocytes are nicotinic and muscarinic acetylcholine receptors. This work is devoted to the search for the SLURP-2 functional regions responsible for enhancing keratinocyte viability and migration. We produced synthetic peptides corresponding to the SLURP-2 loop regions and studied their effect on the viability and migration of HaCaT skin keratinocytes using the WST-8 test and scratch-test, respectively. The highest activity was exhibited by a loop II-mimicking peptide that enhanced the viability of keratinocytes and stimulated their migration. The peptide activity was mediated by interactions with α7- and α3β2-nAChRs and suppression of the p38 MAPK intracellular signaling pathway. Thus, we obtained new data that explain the mechanisms underlying SLURP-2 regulatory activity and indicate the promise of further research into loop II-mimicking peptides as prototypes of wound healing drugs.</p></abstract><trans-abstract xml:lang="ru"><p>Секретируемый белок человека SLURP-2 является регулятором гомеостаза эпителия, повышает жизнеспособность и стимулирует миграцию кератиноцитов. Мишенями SLURP-2 в кератиноцитах служат никотиновые и мускариновые ацетилхолиновые рецепторы. Данная работа посвящена поиску функциональных участков молекулы SLURP-2, отвечающих за повышение жизнеспособности и стимуляцию миграции кератиноцитов. Получены синтетические пептиды, соответствующие петлевым участкам белка SLURP-2, изучено их влияние на жизнеспособность кератиноцитов кожи HaCaT с помощью теста WST-8 и их миграцию с помощью scratch-теста. Наиболее активным оказался пептид, соответствующий петле II, стимулирующий жизнеспособность и миграцию кератиноцитов. Активность этого пептида обусловлена взаимодействием с α7- и α3β2-nAChR, а также подавлением сигнальных внутриклеточных путей p38 МАР-киназы. Таким образом, получены новые данные, объясняющие механизмы, лежащие в основе регуляторной активности SLURP-2 и указывающие на перспективность дальнейших исследований пептидов, соответствующих петле II, в качестве прототипов препаратов для ранозаживления.</p></trans-abstract><kwd-group xml:lang="en"><kwd>SLURP-1</kwd><kwd>SLURP-2</kwd><kwd>Ly6/uPAR</kwd><kwd>nicotinic acetylcholine receptor</kwd><kwd>keratinocytes</kwd><kwd>migration</kwd><kwd>wound healing</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>SLURP-1</kwd><kwd>SLURP-2</kwd><kwd>Ly6/uPAR</kwd><kwd>никотиновый ацетилхолиновый рецептор</kwd><kwd>кератиноциты</kwd><kwd>ранозаживление</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap></funding-source><award-id>23-24-00636</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Loughner C.L., Bruford E.A., McAndrews M.S., Delp E.E., Swamynathan S., Swamynathan S.K. // Hum. 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