Accelerated Dystrophy and Decay of Oligodendrocyte Precursor Cells in the APP/PS1 Model of Alzheimer's-Like Pathology.

Accelerated Dystrophy and Decay of Oligodendrocyte Precursor Cells in the APP/PS1 Model of Alzheimer's-Like Pathology.
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阿尔茨海默氏病病理学的APP/PS1模型中的少突胶质细胞前体细胞的加速营养不良和衰减。

DOI:
10.3389/fncel.2020.575082
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发表时间:
2020
影响因子:
5.3
通讯作者:
Butt AM
Butt AM
中科院分区:
医学2区
文献类型:
--
作者:
Chacon-De-La-Rocha I;Fryatt G;Rivera AD;Verkhratsky A;Raineteau O;Gomez-Nicola D;Butt AM

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髓磷脂破坏是自然衰老和阿尔茨海默病(AD)的一个特征。在中枢神经系统中,髓磷脂由少突胶质细胞产生,而少突胶质细胞在整个生命过程中由少突胶质细胞祖细胞(OPCs)产生。在这里,我们检测了APP/PS1小鼠(ad样病理模型)中OPCs与非转基因(Tg)年龄匹配对照的年龄相关变化。用核染料Hoescht对NG2进行免疫标记后,在海马CA1区进行分析,以鉴定OPC和OPC姐妹细胞,这是OPC复制的一种测量。结果显示,APP/PS1小鼠的OPCs数量在9个月时显著减少,与年龄匹配的对照组相比,在14个月时没有进一步下降。此外,APP/PS1小鼠的OPC姐妹细胞数量在14个月时显著下降,而在年龄匹配的对照组中没有观察到这种情况。值得注意的是,APP/PS1小鼠的OPC在14个月时也表现出明显的形态学变化,其特征是OPC过程域的整体萎缩和过程分支的增加。结果表明,OPC破坏是APP/PS1 AD小鼠模型的病理征象。
Myelin disruption is a feature of natural aging and Alzheimer’s disease (AD). In the CNS, myelin is produced by oligodendrocytes, which are generated throughout life by oligodendrocyte progenitor cells (OPCs). Here, we examined age-related changes in OPCs in APP/PS1 mice, a model for AD-like pathology, compared with non-transgenic (Tg) age-matched controls. The analysis was performed in the CA1 area of the hippocampus following immunolabeling for NG2 with the nuclear dye Hoescht, to identify OPC and OPC sister cells, a measure of OPC replication. The results indicate a significant decrease in the number of OPCs at 9 months in APP/PS1 mice, compared to age-matched controls, without further decline at 14 months. Also, the number of OPC sister cells declined significantly at 14 months in APP/PS1 mice, which was not observed in age-matched controls. Notably, OPCs also displayed marked morphological changes at 14 months in APP/PS1 mice, characterized by an overall shrinkage of OPC process domains and increased process branching. The results indicate that OPC disruption is a pathological sign in the APP/PS1 mouse model of AD.
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发表时间: 2013-08-10
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