Neurogenic radial glia in the outer subventricular zone of human neocortex. Hansen, D. V, Lui, J. H, Parker, P. R L, & Kriegstein, A. R Nature, 464(7288):554–561, England, March, 2010. abstract bibtex Neurons in the developing rodent cortex are generated from radial glial cells that function as neural stem cells. These epithelial cells line the cerebral ventricles and generate intermediate progenitor cells that migrate into the subventricular zone (SVZ) and proliferate to increase neuronal number. The developing human SVZ has a massively expanded outer region (OSVZ) thought to contribute to cortical size and complexity. However, OSVZ progenitor cell types and their contribution to neurogenesis are not well understood. Here we show that large numbers of radial glia-like cells and intermediate progenitor cells populate the human OSVZ. We find that OSVZ radial glia-like cells have a long basal process but, surprisingly, are non-epithelial as they lack contact with the ventricular surface. Using real-time imaging and clonal analysis, we demonstrate that these cells can undergo proliferative divisions and self-renewing asymmetric divisions to generate neuronal progenitor cells that can proliferate further. We also show that inhibition of Notch signalling in OSVZ progenitor cells induces their neuronal differentiation. The establishment of non-ventricular radial glia-like cells may have been a critical evolutionary advance underlying increased cortical size and complexity in the human brain.
@ARTICLE{Hansen2010-pi,
title = "Neurogenic radial glia in the outer subventricular zone of human
neocortex",
author = "Hansen, David V and Lui, Jan H and Parker, Philip R L and
Kriegstein, Arnold R",
abstract = "Neurons in the developing rodent cortex are generated from radial
glial cells that function as neural stem cells. These epithelial
cells line the cerebral ventricles and generate intermediate
progenitor cells that migrate into the subventricular zone (SVZ)
and proliferate to increase neuronal number. The developing human
SVZ has a massively expanded outer region (OSVZ) thought to
contribute to cortical size and complexity. However, OSVZ
progenitor cell types and their contribution to neurogenesis are
not well understood. Here we show that large numbers of radial
glia-like cells and intermediate progenitor cells populate the
human OSVZ. We find that OSVZ radial glia-like cells have a long
basal process but, surprisingly, are non-epithelial as they lack
contact with the ventricular surface. Using real-time imaging and
clonal analysis, we demonstrate that these cells can undergo
proliferative divisions and self-renewing asymmetric divisions to
generate neuronal progenitor cells that can proliferate further.
We also show that inhibition of Notch signalling in OSVZ
progenitor cells induces their neuronal differentiation. The
establishment of non-ventricular radial glia-like cells may have
been a critical evolutionary advance underlying increased
cortical size and complexity in the human brain.",
journal = "Nature",
volume = 464,
number = 7288,
pages = "554--561",
month = mar,
year = 2010,
address = "England",
language = "en"
}
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