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Cell. 2011 Jun 24;145(7):1142-55. doi: 10.1016/j.cell.2011.05.024. Epub 2011 Jun 16.

In vivo clonal analysis reveals self-renewing and multipotent adult neural stem cell characteristics.

Author information

1
Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.

Abstract

Neurogenesis and gliogenesis continue in discrete regions of the adult mammalian brain. A fundamental question remains whether cell genesis occurs from distinct lineage-restricted progenitors or from self-renewing and multipotent neural stem cells in the adult brain. Here, we developed a genetic marking strategy for lineage tracing of individual, quiescent, and nestin-expressing radial glia-like (RGL) precursors in the adult mouse dentate gyrus. Clonal analysis identified multiple modes of RGL activation, including asymmetric and symmetric self-renewal. Long-term lineage tracing in vivo revealed a significant percentage of clones that contained RGL(s), neurons, and astrocytes, indicating capacity of individual RGLs for both self-renewal and multilineage differentiation. Furthermore, conditional Pten deletion in RGLs initially promotes their activation and symmetric self-renewal but ultimately leads to terminal astrocytic differentiation and RGL depletion in the adult hippocampus. Our study identifies RGLs as self-renewing and multipotent neural stem cells and provides novel insights into in vivo properties of adult neural stem cells.

PMID:
21664664
PMCID:
PMC3124562
DOI:
10.1016/j.cell.2011.05.024
[Indexed for MEDLINE]
Free PMC Article

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