scholarly journals Metabolism of human pluripotent stem cells and differentiated cells for regenerative therapy: a focus on cardiomyocytes

2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Sho Tanosaki ◽  
Shugo Tohyama ◽  
Yoshikazu Kishino ◽  
Jun Fujita ◽  
Keiichi Fukuda

AbstractPluripotent stem cells (PSCs) exhibit promising application in regenerative therapy, drug discovery, and disease modeling. While several protocols for differentiating somatic cells from PSCs exist, their use is limited by contamination of residual undifferentiated PSCs and immaturity of differentiated somatic cells.The metabolism of PSCs differs greatly from that of somatic cells, and a distinct feature is required to sustain the distinct properties of PSCs. To date, several studies have reported on the importance of metabolism in PSCs and their derivative cells. Here, we detail advancements in the field, with a focus on cardiac regenerative therapy.

2016 ◽  
Vol 17 (2) ◽  
pp. 256 ◽  
Author(s):  
Mohammed Kawser Hossain ◽  
Ahmed Abdal Dayem ◽  
Jihae Han ◽  
Subbroto Kumar Saha ◽  
Gwang-Mo Yang ◽  
...  

Cells ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 1078
Author(s):  
Tae Won Ha ◽  
Ji Hun Jeong ◽  
HyeonSeok Shin ◽  
Hyun Kyu Kim ◽  
Jeong Suk Im ◽  
...  

Human pluripotent stem cells (hPSCs), such as embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), have a well-orchestrated program for differentiation and self-renewal. However, the structural features of unique proteostatic-maintaining mechanisms in hPSCs and their features, distinct from those of differentiated cells, in response to cellular stress remain unclear. We evaluated and compared the morphological features and stress response of hPSCs and fibroblasts. Compared to fibroblasts, electron microscopy showed simpler/fewer structures with fewer networks in the endoplasmic reticulum (ER) of hPSCs, as well as lower expression of ER-related genes according to meta-analysis. As hPSCs contain low levels of binding immunoglobulin protein (BiP), an ER chaperone, thapsigargin treatment sharply increased the gene expression of the unfolded protein response. Thus, hPSCs with decreased chaperone function reacted sensitively to ER stress and entered apoptosis faster than fibroblasts. Such ER stress-induced apoptotic processes were abolished by tauroursodeoxycholic acid, an ER-stress reliever. Hence, our results revealed that as PSCs have an underdeveloped structure and express fewer BiP chaperone proteins than somatic cells, they are more susceptible to ER stress-induced apoptosis in response to stress.


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