Age-related changes in the oligodendrocyte progenitor pool influence brain remodeling after injury.
Age-related changes in the oligodendrocyte progenitor pool influence brain remodeling after injury.
复制标题
少突胶质细胞祖细胞库中与年龄相关的变化影响损伤后的大脑重塑。
DOI：
10.1159/000322081
复制
发表时间：
2010
影响因子：
2.9
通讯作者：
Kernie,StevenG
中科院分区：
文献类型：
--
作者：
Wright,Jamie;Zhang,Gui;Yu,Tzong-Shiue;Kernie,StevenG
Brain remodeling occurs after all forms of brain injury, though the mechanisms underlying this phenomenon are mostly unknown. Neural stem and progenitor cells are one source of endogenous cells that may contribute to brain remodeling and subsequent recovery. In addition, certain populations of progenitors are particularly susceptible to injury, and their depletion may lead to the impairment of developmental processes that vary with age. We particularly focus on glial progenitors, which are more abundant postnatally and particularly susceptible to acquired brain injuries such as traumatic brain injury. We have recently characterized a novel transgenic mouse that expresses herpes thymidine kinase under the control of the neural-progenitor-specific nestin promoter and allows for temporally induced ablation of dividing progenitors. By genetically depleting dividing cortical progenitors at various times, we identify postnatal day 7 (P7) to P14 as a critical period for oligodendrogenesis. Targeted ablation of dividing progenitors during this window leads to cell-specific depletion of oligodendrocyte precursors expressing platelet-derived growth factor receptor-α and corresponding myelination and motor deficits. This modeling provides insight into how the age at which white matter injury occurs influences both injury severity and subsequent recovery.
