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Achievement of Cellular Immunity and Discordant Xenogeneic Tolerance in Mice by Porcine Thymus Grafts 被引量:1
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作者 YongZhao zuyuesun +1 位作者 YiminSun AlanN.Langnas 《Cellular & Molecular Immunology》 SCIE CAS CSCD 2004年第3期173-179,共7页
Specific cellular immune tolerance may be essential for successful xenotransplantation in humans.Thymecto- mized (ATX),T and NK cell-depleted immunocompetent mice grafted with xenogeneic fetal pig thymic and liver tis... Specific cellular immune tolerance may be essential for successful xenotransplantation in humans.Thymecto- mized (ATX),T and NK cell-depleted immunocompetent mice grafted with xenogeneic fetal pig thymic and liver tissue (FP THY/LIV) result in efficient mouse thymopoiesis and peripheral repopulation of functional mouse CD4^+ T cell.Very importantly,the reconstituted mouse T cells are specifically tolerant to pig donor antigens.Studies demonstrated that porcine MHCs mediated positive and negative selection of mouse thymocytes in FP THY grafts,whereas mouse MHCs were involved in negative selection in grafts.Therefore,T cell tolerance to xenogeneic donor antigens could be induced by grafting donor thymus tissue.Xenogeneic thymic replacement might have a potential role in the reconstitution of cellular immunity in patients with AIDS or other immunodeficiencies caused by thymus dysfunction.Cellular & Molecular Immunology.2004;1(3): 173-179. 展开更多
关键词 XENOTRANSPLANTATION THYMUS TOLERANCE T cells
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