Neuropotent self-renewing neural stem (NS) cells derived from mouse induced pluripotent stem (iPS) cells

Neural stem (NS) cells are a homogenous population of stem cells that expands in monolayer under serum-free conditions while remaining highly neuropotent. Here, we generated NS cells from induced pluripotent stem (iPS) cells that were previously derived from mouse fibroblasts (NS-(f)iPS). We showed that NS-(f)iPS cells exhibit long-term expansion and express markers of neurogenic radial glia. Analyses of the regional markers expressed in NS-(f)iPS cells suggested a ventral-rhombencephalic identity. Upon exposure to differentiation protocols, NS-(f)iPS cells produce neurons, astrocytes, and oligodendrocytes with an efficiency similar to ES-derived NS cells. NS-(f)iPS cells represent a new toot for studying neural cell fate determination and terminal differentiation, providing an interesting resource for experimental transplantation. Comparative studies between NS cells derived from iPS cells, reprogrammed from different somatic sources, and from authentic ES cells are necessary to identify critical elements for multipotency acquisition. (C) 2009 Elsevier Inc. All rights reserved.