scholarly journals Application of induced pluripotent stem cells for cartilage regeneration in CLAWN miniature pig osteochondral replacement model

2018 ◽  
Vol 9 ◽  
pp. 58-70 ◽  
Author(s):  
Sakura Uto ◽  
Satoru Nishizawa ◽  
Atsuhiko Hikita ◽  
Tsuyoshi Takato ◽  
Kazuto Hoshi
2018 ◽  
Vol 28 (5) ◽  
pp. 529-537 ◽  
Author(s):  
Yeri Alice Rim ◽  
Yoojun Nam ◽  
Ji Hyeon Ju

Regeneration of articular cartilage is of great interest in cartilage tissue engineering since articular cartilage has a low regenerative capacity. Due to the difficulty in obtaining healthy cartilage for transplantation, there is a need to develop an alternative and effective regeneration therapy to treat degenerative or damaged joint diseases. Stem cells including various adult stem cells and pluripotent stem cells are now actively used in tissue engineering. Here, we provide an overview of the current status of cord blood cells and induced pluripotent stem cells derived from these cells in cartilage regeneration. The abilities of these cells to undergo chondrogenic differentiation are also described. Finally, the technical challenges of articular cartilage regeneration and future directions are discussed.


2019 ◽  
Vol 37 (3) ◽  
pp. 27
Author(s):  
Wan-Ju Li

Stem cell therapies hold promise for the treatment of musculoskeletal disorders. Mesenchymal stem cells (MSCs) derived from adult tissues are the most common type of stem cells being investigated for biomedical applications among all stem cell types. However, studies have shown that MSC properties and functions are largely affected by age and health condition of the donor, which often causes inconsistency in therapeutic outcomes. This is a critical challenge that needs to be addressed before the promise of stem cells for therapies can be fulfilled. Our group has worked on tackling the challenge for more than a decade by developing strategies such as priming the cell with regulatory molecules or hypoxia culture. Recently, we successfully reprogramed human and pig somatic cells into induced pluripotent stem cells (iPSCs) using the integration-free episomal method and subsequently derived MSCs from iPSCs for evaluation of potential orthopedic applications. Our study results showed that through cellular reprogramming the capacity of cell propagation and multilineage differentiation of MSCs was greatly enhanced and the expression of aging-associated markers in the cell was significantly downregulated, suggesting that cellular reprogramming can rejuvenate MSCs to increase the regenerative capability, and our approach converting MSCs into iPSCs is promising for addressing the challenge of reduced therapeutic potential associated with MSC aging. In addition, we found that during chondrogenic induction reprogramed MSCs increasingly differentiated into hyaline chondrocytes expressing cartilage-specific markers, compared to control parental cells, suggesting that iPSC-derived MSCs are promising therapeutic agents for articular cartilage regeneration. In general, our findings highlight the potential of iPSCs in better understanding aging-associated musculoskeletal disorders and providing biological options for the treatment.


2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Dae-Jin Kwon ◽  
Hyelena Jeon ◽  
Keon Bong Oh ◽  
Sun-A Ock ◽  
Gi-Sun Im ◽  
...  

The generation and application of porcine induced pluripotent stem cells (iPSCs) may enable the testing for safety and efficacy of therapy in the field of human regenerative medicine. Here, the generation of iPSCs from the Massachusetts General Hospital miniature pig (MGH minipig) established for organ transplantation studies is reported. Fibroblasts were isolated from the skin of the ear of a 10-day-old MGH minipig and transduced with a cocktail of six human factors:POU5F1, NANOG, SOX2, C-MYC, KLF4,andLIN28. Two distinct types of iPSCs were generated that were positive for alkaline phosphatase activity, as well as the classical pluripotency markers:Oct4, Nanog, Sox2, and the surface marker Ssea-1. Only one of two porcine iPSC lines differentiated into three germ layers bothin vitroandin vivo. Western blot analysis showed that the porcine iPSCs were dependent on LIF or BMP-4 to sustain self-renewal and pluripotency. In conclusion, the results showed that human pluripotent factors could reprogram porcine ear fibroblasts into the pluripotent state. These cells may provide a useful source of cells that could be used for the treatment of degenerative and genetic diseases and agricultural research and application.


2010 ◽  
Vol 34 (8) ◽  
pp. S36-S36
Author(s):  
Ping Duan ◽  
Xuelin Ren ◽  
Wenhai Yan ◽  
Xuefei Han ◽  
Xu Yan ◽  
...  

Acta Naturae ◽  
2009 ◽  
Vol 1 (2) ◽  
pp. 91-92 ◽  
Author(s):  
M V Shutova ◽  
A N Bogomazova ◽  
M A Lagarkova ◽  
S L Kiselev

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