| First Author | Kwon IS | Year | 2009 |
| Journal | Mol Cell Neurosci | Volume | 40 |
| Issue | 1 | Pages | 50-61 |
| PubMed ID | 18848628 | Mgi Jnum | J:146992 |
| Mgi Id | MGI:3839063 | Doi | 10.1016/j.mcn.2008.08.012 |
| Citation | Kwon IS, et al. (2009) Expression of Disabled 1 suppresses astroglial differentiation in neural stem cells. Mol Cell Neurosci 40(1):50-61 |
| abstractText | Disabled 1 (Dab1), a cytoplasmic adaptor protein expressed predominantly in the CNS, transduces a Reelin-initiated signaling that controls neuronal migration and positioning during brain development. To determine the role of Dab1 in neural stem cell (NSC) differentiation, we established a culture of neurospheres derived from the embryonic forebrain of the Dab1(-/-) mice, yotari. Differentiating Dab1(-/-) neurospheres exhibited a higher expression of GFAP, an astrocytic marker, at the expense of neuronal markers. Under Dab1-deficient condition, the expression of NeuroD, a transcription factor for neuronal differentiation, was decreased and the JAK-STAT pathway was evidently increased during differentiation of NSC, suggesting the possible involvement of Dab1 in astrocyte differentiation via JAK-STAT pathway. Notably, expression of neural and glial markers and the level of JAK-STAT signaling molecules were not changed in differentiating NSC by Reelin treatment, indicating that differentiation of NSC is Reelin-independent. Immunohistochemical analyses showed a decrease in the number of neurons and an increase in the number of GFAP-positive cells in developing yotari brains. Our results suggest that Dab1 participates in the differentiation of NSCs into a specific cell lineage, thereby maintaining a balance between neurogenesis and gliogenesis. |
