Evolving features of human cortical development and the emerging roles of non-coding RNAs in neural progenitor cell diversity and function

Author(s):  
Kanella Prodromidou ◽  
Rebecca Matsas
2017 ◽  
Vol 216 (7) ◽  
pp. 1975-1992 ◽  
Author(s):  
Yanxin Li ◽  
Jianwei Jiao

Histone cell cycle regulator (HIRA) is a histone chaperone and has been identified as an epigenetic regulator. Subsequent studies have provided evidence that HIRA plays key roles in embryonic development, but its function during early neurogenesis remains unknown. Here, we demonstrate that HIRA is enriched in neural progenitor cells, and HIRA knockdown reduces neural progenitor cell proliferation, increases terminal mitosis and cell cycle exit, and ultimately results in premature neuronal differentiation. Additionally, we demonstrate that HIRA enhances β-catenin expression by recruiting H3K4 trimethyltransferase Setd1A, which increases H3K4me3 levels and heightens the promoter activity of β-catenin. Significantly, overexpression of HIRA, HIRA N-terminal domain, or β-catenin can override neurogenesis abnormities caused by HIRA defects. Collectively, these data implicate that HIRA, cooperating with Setd1A, modulates β-catenin expression and then regulates neurogenesis. This finding represents a novel epigenetic mechanism underlying the histone code and has profound and lasting implications for diseases and neurobiology.


RSC Advances ◽  
2017 ◽  
Vol 7 (72) ◽  
pp. 45587-45594 ◽  
Author(s):  
Lingyan Yang ◽  
Ziyun Jiang ◽  
Linhong Zhou ◽  
Keli Zhao ◽  
Xun Ma ◽  
...  

Cell-derived extracellular matrix exhibits excellent adhesion performance for neural progenitor cell anchoring and residency, resulting in promoted proliferation of the stem cells to basal forebrain cholinergic neurons.


2017 ◽  
Vol 18 (9) ◽  
pp. 2723-2731 ◽  
Author(s):  
Tianyu Zhao ◽  
Drew L. Sellers ◽  
Yilong Cheng ◽  
Philip J. Horner ◽  
Suzie H. Pun

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