Plasma cell homeostasis: the effects of chronic antigen stimulation and inflammation.

Plasma cell homeostasis: the effects of chronic antigen stimulation and inflammation.
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DOI:
10.4049/jimmunol.1301163
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发表时间:
2013-09-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Gray D
Gray D
中科院分区:
其他
文献类型:
--
作者:
Slocombe T;Brown S;Miles K;Gray M;Barr TA;Gray D

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维持对先前所见抗原的体液免疫的长寿浆细胞(LLPC)在骨髓中占有一席之地。细胞进入(和离开)这个隔间的规则和机制还知之甚少。我们观察了在抗原刺激和/或炎症持续存在的情况下,LLPC隔室和浆细胞(PC)寿命通常会发生什么。我们发现,慢性抗原供应导致局部淋巴器官产生短暂的PC,代价是任何LLPC的产生。此外,我们发现感染引起的炎症(通过肿瘤坏死因子α介导)导致骨髓中LLPC的戏剧性动员,伴随而来的是针对先前免疫抗原的循环抗体水平的降低。这些数据是在BM LLPC舱室的容量和进入该舱室的竞争的背景下讨论的。
Long-lived plasma cells (LLPC) that maintain humoral immunity to previously encountered antigens occupy a compartment in the BM. The rules and mechanisms by which cells enter (and leave) this compartment are poorly understood. We have looked at what happens to the LLPC compartment and to plasma cell (PC) lifespan in general, in situations where antigen stimulation and/or inflammation persist. We find that chronic antigen supply causes the generation of short-lived PC in the local lymphoid organ, at the expense of any LLPC production. Furthermore, we find that inflammation caused by infection (mediated via TNFα) causes a dramatic mobilization of LLPC from the BM, with a concomitant reduction in circulating antibody levels against previously immunized antigens. These data are discussed in the context of the capacity of the BM LLPC compartment and competition for entry to it.
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