scholarly journals Substrate stiffness induced mechanotransduction regulates temporal evolution of human fetal neural progenitor cell phenotype, differentiation, and biomechanics

2020 ◽  
Vol 8 (19) ◽  
pp. 5452-5464
Author(s):  
Chandrasekhar Kothapalli ◽  
Gautam Mahajan ◽  
Kurt Farrell

We here report on the substrate stiffness dependent spatiotemporal evolution of mechanical properties of neural stem cells and their progenies.

2017 ◽  
Author(s):  
TCW Julia ◽  
Minghui Wang ◽  
Anna A. Pimenova ◽  
Kathryn R. Bowles ◽  
Brigham J. Hartley ◽  
...  

SUMMARYGrowing evidence implicates the importance of glia, particularly astrocytes, in neurological and psychiatric diseases. Here, we describe a rapid and robust method for the differentiation of highly pure populations of replicative astrocytes from human induced pluripotent stem cells (hiPSCs), via a neural progenitor cell (NPC) intermediate. Using this method, we generated hiPSC-derived astrocyte populations (hiPSC-astrocytes) from 42 NPC lines (derived from 30 individuals) with an average of ∼90% S100β-positive cells. Transcriptomic analysis demonstrated that the hiPSC-astrocytes are highly similar to primary human fetal astrocytes and characteristic of a non-reactive state. hiPSC-astrocytes respond to inflammatory stimulants, display phagocytic capacity and enhance microglial phagocytosis. hiPSC-astrocytes also possess spontaneous calcium transient activity. Our novel protocol is a reproducible, straightforward (single media) and rapid (<30 days) method to generate homogenous populations of hiPSC-astrocytes that can be used for neuron-astrocyte and microglia-astrocyte co-cultures for the study of neuropsychiatric disorders.ABBREVIATIONShiPSChuman induced pluripotent stem cellNPCneural progenitor cell


2018 ◽  
Author(s):  
M Joerger-Messerli ◽  
M Spinelli ◽  
G Thomi ◽  
V Haesler ◽  
M Müller ◽  
...  

Biomaterials ◽  
2010 ◽  
Vol 31 (14) ◽  
pp. 3930-3940 ◽  
Author(s):  
Stephanie K. Seidlits ◽  
Zin Z. Khaing ◽  
Rebecca R. Petersen ◽  
Jonathan D. Nickels ◽  
Jennifer E. Vanscoy ◽  
...  

SpringerPlus ◽  
2014 ◽  
Vol 3 (1) ◽  
pp. 527 ◽  
Author(s):  
Eiichi Ninomiya ◽  
Taeka Hattori ◽  
Masashi Toyoda ◽  
Akihiro Umezawa ◽  
Takashi Hamazaki ◽  
...  

Organogenesis ◽  
2014 ◽  
Vol 10 (4) ◽  
pp. 365-377 ◽  
Author(s):  
Leonardo D’Aiuto ◽  
Yun Zhi ◽  
Dhanjit Kumar Das ◽  
Madeleine R Wilcox ◽  
Jon W Johnson ◽  
...  

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.


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