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    • 4. 发明申请
    • ANTIGEN-PRESENTING CELL POPULATIONS AND THEIR USE AS REAGENTS FOR ENHANCING OR REDUCING IMMUNE TOLERANCE
    • 抗原细胞群体及其用作增强或减少免疫耐受性的试剂
    • WO2003087347A1
    • 2003-10-23
    • PCT/US2002/011319
    • 2002-04-12
    • MEDICAL COLLEGE OF GEORGIA RESEARCH INSTITUTE, INC.MELLOR, AndrewMUNN, David
    • MELLOR, AndrewMUNN, David
    • C12N5/00
    • C12N5/064A61K2035/122C12N2501/22C12N2501/23C12N2501/70
    • The present invention is based on the discovery antigen-presenting cells (APCs) may be generated to have predetermined levels of expression of the intracellular enzyme, indoleamine 2,3-dioxygenase (IDO). Because expression of high levels of IDO is correlated with a reduced ability to stimulate T cell responses and an enhanced ability to induce immunologic tolerance, APCs having high levels of IDO may be used to increase tolerance in the immune system, as for example in transplant therapy or treatment of autoimmune disorders. For example, APCs having high levels of IDO, and expressing or loaded with at least one antigen from a donor tissue may be used to increase tolerance of the recipient to the donor's tissue. Alternatively, APCs having reduced levels of IDO expression and expressing or loaded with at least one antigen from a cancer or infectious pathogen may be used as vaccines to promote T cell responses and increase immunity.
    • 本发明基于发现抗原呈递细胞(APC)可以被产生以具有细胞内酶,吲哚胺2,3-双加氧酶(IDO)的预定水平的表达。 因为高水平的IDO的表达与刺激T细胞应答的能力降低以及增强的诱导免疫耐受能力相关联,所以具有高水平IDO的APC可用于增加免疫系统的耐受性,例如在移植治疗 或治疗自身免疫性疾病。 例如,可以使用具有高水平的IDO并且表达或加载来自供体组织的至少一种抗原的APC来增加受体与供体组织的耐受性。 或者,具有降低的IDO表达水平并且表达或加载至少一种来自癌症或感染性病原体的抗原的APC可以用作促进T细胞应答并增加免疫力的疫苗。