CD11c depletion severely disrupts Th2 induction and development in vivo.

CD11c depletion severely disrupts Th2 induction and development in vivo.
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DOI:
10.1084/jem.20100734
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发表时间:
2010-09-27
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
MacDonald AS
MacDonald AS
中科院分区:
其他
文献类型:
--
作者:
Phythian-Adams AT;Cook PC;Lundie RJ;Jones LH;Smith KA;Barr TA;Hochweller K;Anderton SM;Hämmerling GJ;Maizels RM;MacDonald AS

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尽管树突状细胞(dc)是CD4+ T细胞反应的熟练启动者,但它们在Th2环境中在这方面的基本重要性仍有待证实。我们使用CD11c -白喉毒素(DTx)受体小鼠在CD4+ Th2反应的启动阶段消耗CD11c+细胞,以对抗寄生蠕虫曼氏血吸虫。DTx治疗显著减少了所有测试组织中的CD11c+ dc,有效率为70-80%。即使这种不完全消耗也会导致CD4+ T细胞产生Th2细胞因子的显著受损,改变免疫反应的平衡并导致向IFN-γ产生的转变。相比之下,在该系统中,使用Mar-1抗体去除嗜碱性细胞对Th2诱导没有可测量的影响。这些数据强调了CD11c+抗原呈递细胞在协调Th2在体内对抗蠕虫感染中发挥的重要作用,这种反应通常是平衡的,以防止潜在的破坏性炎症细胞因子的产生。
Although dendritic cells (DCs) are adept initiators of CD4+ T cell responses, their fundamental importance in this regard in Th2 settings remains to be demonstrated. We have used CD11c–diphtheria toxin (DTx) receptor mice to deplete CD11c+ cells during the priming stage of the CD4+ Th2 response against the parasitic helminth Schistosoma mansoni. DTx treatment significantly depleted CD11c+ DCs from all tissues tested, with 70–80% efficacy. Even this incomplete depletion resulted in dramatically impaired CD4+ T cell production of Th2 cytokines, altering the balance of the immune response and causing a shift toward IFN-γ production. In contrast, basophil depletion using Mar-1 antibody had no measurable effect on Th2 induction in this system. These data underline the vital role that CD11c+ antigen-presenting cells can play in orchestrating Th2 development against helminth infection in vivo, a response that is ordinarily balanced so as to prevent the potentially damaging production of inflammatory cytokines.
树突状细胞的组成型消融会破坏CD4 T细胞的自耐力,并导致自发性致命自身免疫性。
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