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首页> 外文期刊>Nature immunology >Multiple layers of B cell memory with different effector functions.
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Multiple layers of B cell memory with different effector functions.

机译:具有不同效应器功能的多层B细胞存储器。

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Memory B cells are at the center of longstanding controversies regarding the presence of antigen for their survival and their re-engagement in germinal centers after secondary challenge. Using a new mouse model of memory B cell labeling dependent on the cytidine deaminase AID, we show that after immunization with a particulate antigen, B cell memory appeared in several subsets, comprising clusters of immunoglobulin M-positive (IgM(+)) and IgG1(+) B cells in germinal center-like structures that persisted up to 8 months after immunization, as well as IgM(+) and IgG1(+) B cells with a memory phenotype outside of B cell follicles. After challenge, the IgG subset differentiated into plasmocytes, whereas the IgM subset reinitiated a germinal center reaction. This model, in which B cell memory appears in several layers with different functions, reconciles previous conflicting propositions.
机译:关于抗原的生存及其在二次攻击后在生发中心的重新结合,记忆B细胞一直是争论的中心。使用依赖于胞苷脱氨酶AID的记忆B细胞标记的新小鼠模型,我们显示了用微粒抗原免疫后,B细胞记忆出现在几个子集中,包括免疫球蛋白M阳性(IgM(+))和IgG1簇(+)生发中心样结构中的B细胞在免疫后可持续长达8个月,还有IgM(+)和IgG1(+)B细胞在B细胞滤泡之外具有记忆表型。攻击后,IgG亚群分化为浆细胞,而IgM亚群重新引发生发中心反应。这个模型中B细胞内存以不同的功能出现在多层中,它调和了先前相互矛盾的主张。

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