Heterogeneity of meningeal B cells reveals a lymphopoietic niche at the CNS borders.

Heterogeneity of meningeal B cells reveals a lymphopoietic niche at the CNS borders.
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DOI:
10.1126/science.abf9277
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发表时间:
2021-07-23
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Colonna M
Colonna M
中科院分区:
其他
文献类型:
--
作者:
Brioschi S;Wang WL;Peng V;Wang M;Shchukina I;Greenberg ZJ;Bando JK;Jaeger N;Czepielewski RS;Swain A;Mogilenko DA;Beatty WL;Bayguinov P;Fitzpatrick JAJ;Schuettpelz LG;Fronick CC;Smirnov I;Kipnis J;Shapiro VS;Wu GF;Gilfillan S;Cella M;Artyomov MN;Kleinstein SH;Colonna M

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The meninges contain adaptive immune cells that provide immunosurveillance of the CNS. These cells are thought to derive from the systemic circulation. Through single cell analyses, confocal imaging, bone marrow chimeras and parabiosis experiments, we show that meningeal B cells derive locally from the calvaria, which harbors a bone marrow niche for hematopoiesis. B cells reach the meninges from the calvaria through specialized vascular connections. This calvaria-meningeal path of B cell development may provide the CNS with a constant supply of B cells educated by CNS antigens. Conversely, we show that a subset of antigen-experienced B cells that populate the meninges in aging mice are blood-borne. These results identify a private source for meningeal B cells which may help maintain immune privilege within the CNS. Meningeal B cells originate from the skull bone marrow, but blood-derived antigen-experienced B cells infiltrate the meninges during aging.
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