NG2+ CNS glial progenitors remain committed to the oligodendrocyte lineage in postnatal life and following neurodegeneration.
NG2+ CNS glial progenitors remain committed to the oligodendrocyte lineage in postnatal life and following neurodegeneration.
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DOI:
10.1016/j.neuron.2010.09.009
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发表时间:
2010-11-18
期刊:
影响因子:
16.2
通讯作者:
Bergles, Dwight E.
中科院分区:
文献类型:
--
作者:
Kang, Shin H.;Fukaya, Masahiro;Yang, Jason K.;Rothstein, Jeffrey D.;Bergles, Dwight E.
The mammalian CNS contains a ubiquitous population of glial progenitors known as NG2+ cells that have the ability to develop into oligodendrocytes and undergo dramatic changes in response to injury and demyelination. Although it has been reported that NG2+ cells are multipotent, their fate in health and disease remains controversial. Here, we generated PDGFαR-CreER transgenic mice and followed their fate in vivo in the developing and adult CNS. These studies revealed that NG2+ cells in the postnatal CNS generate myelinating oligodendrocytes, but not astrocytes or neurons. In regions of neurodegeneration in the spinal cord of ALS mice, NG2+ cells exhibited enhanced proliferation and accelerated differentiation into oligodendrocytes, but remained committed to the oligodendrocyte lineage. These results indicate that NG2+ cells in the normal CNS are oligodendrocyte precursors with restricted lineage potential, and that cell loss and gliosis are not sufficient to alter the lineage potential of these progenitors in ALS mice.
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