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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">Genes &amp; Cells</journal-id><journal-title-group><journal-title xml:lang="en">Genes &amp; Cells</journal-title><trans-title-group xml:lang="ru"><trans-title>Гены и Клетки</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>Genes and Cells</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-1829</issn><issn publication-format="electronic">2500-2562</issn><publisher><publisher-name xml:lang="en">Human Stem Cells Institute</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">122541</article-id><article-id pub-id-type="doi">10.23868/gc122541</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Immunoregulative properties of human fetal hepatic stem cells</article-title><trans-title-group xml:lang="ru"><trans-title>Иммунорегуляторные свойства клеток фетальной печени человека</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Petrenko</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Петренко</surname><given-names>Ю. А.</given-names></name></name-alternatives><address><country country="UA">Ukraine</country></address><email>info@eco-vector.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute for problems of Cryobiology and Cryomedicine, NAS of Ukraine</institution></aff><aff><institution xml:lang="ru">Институт проблем криобиологии и криомедицины НАН Украины</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2007-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2007</year></pub-date><volume>2</volume><issue>3</issue><issue-title xml:lang="ru"/><fpage>57</fpage><lpage>61</lpage><history><date date-type="received" iso-8601-date="2023-01-16"><day>16</day><month>01</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-01-16"><day>16</day><month>01</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2007, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2007, Эко-Вектор</copyright-statement><copyright-year>2007</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://genescells.ru/2313-1829/article/view/122541">https://genescells.ru/2313-1829/article/view/122541</self-uri><abstract xml:lang="en"><p>Human fetal liver is unique as it contains stem hematopoietic cells and their committed derivatives of different maturation. The present study was aimed to assess the amount of immunocompetent human fetal hepatic cells of 9-10 week gestation by phenotypic properties and their reaction to mitogens as well as to evaluate influence of human fetal hepatic cells to proliferation of peripheral blood lymphocytes of adult donors in a mixed culture.</p> <p>The suspension of human fetal hepatic cells was obtained by a mechanical method using vibration. Cells were cryoconserved under the protection of 5% DMSO at the speed of 1 °С per min. Fluorescent microscopy was used for immune marker analysis. The proliferation activity of fetal hepatic cells and adult peripheral blood lymphocytes was assessed according to <sup>3</sup>H-thymidine inclusion. In the mixed culture human fetal hepatic cells were co-cultured with peripheral blood lymphocytes in the presence or absence of mitogens.</p> <p>Immune marker analysis of the fetal hepatic cells suspension did not reveal the statistically relevant number of matured B- and T- lymphocytes. Unlike adult peripheral blood lymphocytes human hepatic cells demonstrated high levels of spontaneous proliferation when cultured in vitro. Mitogens, phytohemagglutinine (PHA) or concanavalin А (Con-А) suppressed the proliferation of human fetal hepatic cells. In the mixed culture the fetal hepatic cells suppressed both spontaneous and mitogen-stimulated proliferation of adult peripheral blood lymphocytes as well as peripheral lymphocyte proliferation in a twoforked mixed culture. Possible mechanisms of fetal hepatic cells activity have been discussed in the article.</p></abstract><trans-abstract xml:lang="ru"><p>Фетальная печень человека (ФПЧ] является уникальным органом, в котором содержатся стволовые кроветворные клетки и их коммитированные потомки различной степени зрелости. В настоящей работе проведено определение содержания иммунокомпетентных клеток в ФПЧ 9-10 недель гестации по фенотипическим свойствам и реакции на митогены, а также исследовано влияние клеток ФПЧ на пролиферацию лимфоцитов периферической крови взрослых доноров при совместном культивировании.</p> <p>Суспензию клеток ФПЧ получали неферментативным методом с использованием вибрации. Клетки криоконсервировали под защитой 5% ДМСО со скоростью 1 °С/мин. Фенотипический анализ проводили с использованием флуоресцентной микроскопии. Пролиферативную активность клеточных культур ФПЧ и лимфоцитов периферической крови (ЛПК) взрослых доноров определяли по включению 3Н-тимидина. В смешанной культуре клетки ФПЧ совместно культивировались с ЛПК в присутствии или отсутствие митогенов.</p> <p>Иммунофенотипический анализ суспензии клеток ФПЧ не выявил зрелых B- и T-лимфоцитов. Клетки ФПЧ, в отличие от ЛПК взрослых доноров обладали высоким уровнем спонтанной пролиферации в условиях культивирования in vitro. Митогены - фитогемагглютинин (ФГА) и конканавалин А (Кон-А) подавляли пролиферацию клеток ФПЧ. При совместном культивировании, клетки ФПЧ подавляли как спонтанную, так и митоген-стимулированную пролиферацию ЛПК взрослых доноров, а также пролиферацию ЛПК в двунаправленной смешанной культуре. В работе обсуждаются возможные механизмы действия клеток ФПЧ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>fetal liver</kwd><kwd>immunology</kwd><kwd>response of mixed lymphocyte culture</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>фетальная печень</kwd><kwd>иммунология</kwd><kwd>реакция смешанной культуры лимфоцитов</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Ek S., Ringden O., Markling L., Westgren M. Immunological capacity of human fetal liver cells. Bone Marrow Transpl. 1994;14: 9-14.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Lindton B., Markling L., Ringden O. Mixed lymphocyte culture of human fetal liver cells. Fetal Diagnosis and Therapy. 2000; 15: 71-8.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Petrenko A.Yu., Sukach A.N. Isolation of intact mitochondria and hepatocytes using vibration. 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