期刊
STEM CELL REPORTS
卷 11, 期 2, 页码 440-453出版社
CELL PRESS
DOI: 10.1016/j.stemcr.2018.06.021
关键词
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资金
- Brown Foundation Institute of Molecular Medicine start-up fund
- Annie and Bob Graham Distinguished Chair in Stem Cell Biology
- Cancer Prevention and Research Institute of Texas [RR140053]
- John S. Dunn Foundation Collaborative Research Award
- NIH [R01HL134780]
- Texas A&M University start-up funds
Cartilage pellets generated from ectomesenchymal progeny of human pluripotent stem cells (hPSCs) in vitro eventually show signs of commitment of chondrocytes to hypertrophic differentiation. When transplanted subcutaneously, most of the surviving pellets were fully mineralized by 8 weeks. In contrast, treatment with the adenylyl cyclase activator, forskolin, in vitro resulted in slightly enlarged cartilage pellets containing an increased proportion of proliferating immature chondrocytes that expressed very low levels of hypertrophic/terminally matured chondrocyte-specific genes. Forskolin treatment also enhanced hyaline cartilage formation by reducing type I collagen gene expression and increasing sulfated glycosaminoglycan accumulation in the developed cartilage. Chondrogenic mesoderm from hPSCs and dedifferentiated nasal chondrocytes responded similarly to forskolin. Furthermore, forskolin treatment in vitro increased the frequency at which the cartilage pellets maintained unmineralized chondrocytes after subcutaneous transplantation. Thus, the post-transplantational fate of chondrocytes originating from hPSC-derived chondroprogenitors can be controlled during their genesis in vitro.
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