MicroRNA-145 and Chondrogenic Differentiation of Stem Cells
Author Information
Author(s): Yang Bo, Guo Hongfeng, Zhang Yulan, Chen Lei, Ying Dajun, Dong Shiwu
Primary Institution: Laboratory of Biomechanics, Department of Anatomy, The Third Military Medical University, Chongqing, People's Republic of China
Hypothesis
MiR-145 inhibits chondrogenic differentiation of mesenchymal stem cells by targeting Sox9.
Conclusion
MiR-145 acts as a key negative regulator of chondrogenic differentiation by directly targeting Sox9.
Supporting Evidence
- MiR-145 expression decreases during TGF-β3-induced chondrogenic differentiation.
- Over-expression of miR-145 inhibits Sox9 protein levels.
- Inhibition of miR-145 enhances the expression of chondrogenic marker genes.
Takeaway
This study found that a tiny molecule called miR-145 can stop stem cells from turning into cartilage cells by blocking a protein called Sox9.
Methodology
The study used qRT-PCR, dual-luciferase reporter assays, and Western blot analysis to investigate the role of miR-145 in chondrogenic differentiation.
Limitations
The effects of miR-145 on terminal differentiation of chondrogenesis were not fully explored beyond 14 days.
Participant Demographics
Murine mesenchymal stem cells were used in the study.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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