Title |
Ulk4 Regulates Neural Stem Cell Pool
|
---|---|
Published in |
Stem Cells, June 2016
|
DOI | 10.1002/stem.2423 |
Pubmed ID | |
Authors |
Min Liu, Zhenlong Guan, Qin Shen, Frances Flinter, Laura Domínguez, Joo Wook Ahn, David A. Collier, Timothy O'Brien, Sanbing Shen |
Abstract |
The size of neural stem cell (NSC) pool at birth determines the starting point of adult neurogenesis. Aberrant neurogenesis is associated with major mental illness, in which ULK4 is proposed as a rare risk factor. Little is known about factors regulating the NSC pool, or function of the ULK4. Here we showed that Ulk4(tm1a/tm1a) mice displayed a dramatically reduced NSC pool at birth. Ulk4 was expressed in a cell cycle-dependent manner and peaked in G2/M phases. Targeted disruption of the Ulk4 perturbed mid-neurogenesis and significantly reduced cerebral cortex in postnatal mice. Pathway analyses of dysregulated genes in Ulk4(tm1a/tm1a) mice revealed Ulk4 as a key regulator of cell cycle and NSC proliferation, partially through regulation of the Wnt signaling. In addition we identified hemizygous deletion of ULK4 gene in 1.2/1000 patients with pleiotropic symptoms including severe language delay and learning difficulties. ULK4, therefore, may significantly contribute to neurodevelopmental, neuropsychiatric and neurodegenerative disorders. This article is protected by copyright. All rights reserved. |
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