期刊
CELL DEATH & DISEASE
卷 10, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41419-019-1636-8
关键词
-
类别
资金
- Basque Government
- University of the Basque Country (UPV/EHU)
- CIBERNED
- MINECO [FPU17/04891, SAF2013-45084-R, SAF2016-75292-R]
Alzheimer's disease (AD) is characterized by a progressive cognitive decline that correlates with the levels of amyloid beta-peptide (A beta) oligomers. Strong evidences connect changes of oligodendrocyte function with the onset of neurodegeneration in AD. However, the mechanisms controlling oligodendrocyte responses to A beta are still elusive. Here, we tested the role of A beta in oligodendrocyte differentiation, maturation, and survival in isolated oligodendrocytes and in organotypic cerebellar slices. We found that A beta peptides specifically induced local translation of 18.5-kDa myelin basic protein (MBP) isoform in distal cell processes concomitant with an increase of process complexity of MBPexpressing oligodendrocytes. A beta oligomers required integrin beta 1 receptor, Src-family kinase Fyn and Ca2+/CaMKII as effectors to modulate MBP protein expression. The pharmacological inhibition of Fyn kinase also attenuated oligodendrocyte differentiation and survival induced by A beta oligomers. Similarly, using ex vivo organotypic cerebellar slices A beta promoted MBP upregulation through Fyn kinase, and modulated oligodendrocyte population dynamics by inducing cell proliferation and differentiation. Importantly, application of A beta to cerebellar organotypic slices enhanced remyelination and oligodendrocyte lineage recovery in lysolecithin (LPC)-induced demyelination. These data reveal an important role of A beta in oligodendrocyte lineage function and maturation, which may be relevant to AD pathogenesis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据