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[211231 저널발표] Microglia contribute to the propagation of Aβ into unaffected brain tissue

최하영 │ 2021-12-30

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2021 Nov 22.
 doi: 10.1038/s41593-021-00951-0. Online ahead of print.

Microglia contribute to the propagation of Aβ into unaffected brain tissue

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Abstract
Microglia appear activated in the vicinity of amyloid beta (Aβ) plaques, but whether microglia contribute to Aβ propagation into unaffected brain regions remains unknown. Using transplantation of wild-type (WT) neurons, we show that Aβ enters WT grafts, and that this is accompanied by microglia infiltration. Manipulation of microglia function reduced Aβ deposition within grafts. Furthermore, in vivo imaging identified microglia as carriers of Aβ pathology in previously unaffected tissue. Our data thus argue for a hitherto unexplored mechanism of Aβ propagation.



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