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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Cell and Tissue Biology</journal-id><journal-title-group><journal-title xml:lang="en">Cell and Tissue Biology</journal-title><trans-title-group xml:lang="ru"><trans-title>Цитология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0041-3771</issn><issn publication-format="electronic">3034-6061</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">669663</article-id><article-id pub-id-type="doi">10.31857/S0041377123010066</article-id><article-id pub-id-type="edn">GPCARC</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Osteogenic Differentiation <italic>in vitro</italic> off Human Osteoblasts is Associated with Only Slight Shift in Their Proteomics Profile</article-title><trans-title-group xml:lang="ru"><trans-title>Остеогенная дифференцировка остеобластов человека <italic>in vitro</italic> ассоциирована со слабым изменением их протеомного профиля</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khvorova</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Хворова</surname><given-names>И. А.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Malashicheva</surname><given-names>A. B.</given-names></name><name xml:lang="ru"><surname>Малашичева</surname><given-names>А. Б.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karelkin</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Карелкин</surname><given-names>В. В.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sereda</surname><given-names>A. P.</given-names></name><name xml:lang="ru"><surname>Середа</surname><given-names>А. П.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bozhkova</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Божкова</surname><given-names>С. А.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tikhilov</surname><given-names>R. M.</given-names></name><name xml:lang="ru"><surname>Тихилов</surname><given-names>Р. М.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gromova</surname><given-names>E. S.</given-names></name><name xml:lang="ru"><surname>Громова</surname><given-names>Е. С.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fefilova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Фефилова</surname><given-names>Е. А.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zainullina</surname><given-names>B. R.</given-names></name><name xml:lang="ru"><surname>Зайнуллина</surname><given-names>Б. Р.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kostina</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Костина</surname><given-names>Д. А.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lobov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Лобов</surname><given-names>А. А.</given-names></name></name-alternatives><email>lobov@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Laboratory of Regenerative Biology, Institute of Cytology of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Лаборатория регенеративной биомедицины, Институт цитологии Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Vreden National Medical Research Center of Traumatology and Orthopedics</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр травматологии и ортопедии им. Р.Р. Вредена</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Resource Centre for Molecular and Cell Technologies, St. Petersburg State University</institution></aff><aff><institution xml:lang="ru">Ресурсный центр “Развитие молекулярных и клеточных технологий” Научного парка СПбГУ</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-01-01" publication-format="electronic"><day>01</day><month>01</month><year>2023</year></pub-date><volume>65</volume><issue>1</issue><fpage>20</fpage><lpage>27</lpage><history><date date-type="received" iso-8601-date="2025-02-27"><day>27</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, И.А. Хворова, Д.А. Костина, Б.Р. Зайнуллина, Е.А. Фефилова, Е.С. Громова, Р.М. Тихилов, С.А. Божкова, А.П. Середа, В.В. Карелкин, А.Б. Малашичева, А.А. Лобов</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, И.А. Хворова, Д.А. Костина, Б.Р. Зайнуллина, Е.А. Фефилова, Е.С. Громова, Р.М. Тихилов, С.А. Божкова, А.П. Середа, В.В. Карелкин, А.Б. Малашичева, А.А. Лобов</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">И.А. Хворова, Д.А. Костина, Б.Р. Зайнуллина, Е.А. Фефилова, Е.С. Громова, Р.М. Тихилов, С.А. Божкова, А.П. Середа, В.В. Карелкин, А.Б. Малашичева, А.А. Лобов</copyright-holder><copyright-holder xml:lang="ru">И.А. Хворова, Д.А. Костина, Б.Р. Зайнуллина, Е.А. Фефилова, Е.С. Громова, Р.М. Тихилов, С.А. Божкова, А.П. Середа, В.В. Карелкин, А.Б. Малашичева, А.А. Лобов</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0041-3771/article/view/669663">https://journals.eco-vector.com/0041-3771/article/view/669663</self-uri><abstract xml:lang="en"><p id="idm45181325537232">Fracture healing is a complex process in which the periosteum and endosteum become the main sources of osteoblast progenitor cells. However, cellular mechanisms and signaling cascades underlying the early stages of osteoblast progenitors differentiation in adult bone are still not well understood. Therefore, we performed shotgun proteomics analysis of primary culture of isolated human osteoblasts from femur of adult donors in undifferentiated conditions and on the sixth day of osteogenic differentiation in vitro. This is an early timepoint in which we have observed no extracellular matrix mineralization yet. 1612 proteins identified with at least two unique peptides were included in proteomics analysis. Data are available via ProteomeXchange with identifier PXD033697. Despite the fact, that matrix mineralization starts only after induction of osteogenic differentiation, we revealed unexpectedly weak physiological shift associated with a decrease of cells proliferative activity and changes in proteins inVved in extracellular matrix secretion and organization. We demonstrated that osteoblasts were positive for markers of later osteogenic differentiation stages during standard cultivation: osteopontin, osteocalcin, BMP-2/4 and RUNX2. Therefore, further differentiation required for matrix mineralization needs minimal physiological changes.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181325534864">Заживление переломов представляет собой сложный процесс, при котором основными источниками клеток-предшественников остеобластов становятся надкостница и эндост. Однако клеточные механизмы и сигнальные каскады, лежащие в основе начальных стадий дифференцировки предшественников остеобластов во взрослой кости, до сих пор недостаточно изучены. Поэтому мы провели протеомный анализ первичной культуры изолированных остеобластов человека из бедренной кости взрослых доноров в недифференцированных условиях и на пятый день остеогенной дифференцировки <italic>in vitro</italic>. Это ранняя временная точка, при которой ещe не наблюдается минерализация внеклеточного матрикса. В протеомный анализ были включены 1612 белков, идентифицированных как минимум по двум пептидами. Данные доступны через ProteomeXchange с идентификатором PXD033697. Несмотря на то, что минерализация матрикса начинается только после индукции остеогенной дифференцировки, мы выявили неожиданно слабый физиологический сдвиг, связанный со снижением пролиферативной активности клеток и изменением белков, участвующих в секреции и организации внеклеточного матрикса. Мы показали, что при культивировании в стандартных условиях в остеобластах выявляются маркеры поздних стадий остеогенной дифференцировки, в том числе BMP-2/4, остеокальцин, остеопонтин и RUNX2. Следовательно, дальнейшая дифференцировка, необходимая для минерализации матрикса, требует минимальных физиологических изменений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>osteoblasts</kwd><kwd>osteogenic differentiation</kwd><kwd>shotgun proteomics</kwd><kwd>bone</kwd><kwd>mass spectrometry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>остеобласты</kwd><kwd>остеогенная дифференцировка</kwd><kwd>протеомика дробовика</kwd><kwd>кость</kwd><kwd>масс-спектрометрия</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Протеомику дробовика выполнили в Ресурсном центре “Развитие молекулярных и клеточных технологий” Научного парка СПбГУ.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Bahney C., Zondervan R., Allison P., Theologis A., Ashley J., Ahn J., Miclau T., Marcucio R., Hankenson K. 2019. Cellular biology of fracture healing. J. Orthop. Res. V. 37. 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