How High Sugar Affects Bone Growth in Diabetes
Author Information
Author(s): Chen Xiao-jing, Yang Yu-ying, Pan Zheng-can, Xu Jing-zun, Jiang Tao, Zhang Lin-lin, Zhu Ke-cheng, Zhang Deng, Song Jia-xi, Sheng Chun-xiang, Sun Li-hao, Tao Bei, Liu Jian-min, Zhao Hong-yan
Primary Institution: Shanghai Jiao Tong University School of Medicine
Hypothesis
The study investigates whether high glucose levels impair osteoblastogenesis through the inhibition of the PINK1/Drp1-mediated mitophagy pathway.
Conclusion
High glucose levels inhibit osteoblast differentiation by suppressing the PINK1/Drp1-mediated mitophagy pathway, but BMP9 can reverse this effect.
Supporting Evidence
- High glucose levels led to increased reactive oxygen species and decreased mitochondrial membrane potential in osteoblasts.
- BMP9 treatment improved osteogenic differentiation and mitochondrial function in high glucose conditions.
- RNA sequencing revealed downregulation of PINK1 and Drp1 in osteoblasts exposed to high glucose.
Takeaway
When there's too much sugar, it can hurt the cells that help make bones, but a special protein called BMP9 can help fix that.
Methodology
The study used in vitro experiments with MC3T3-E1 cells and in vivo experiments with STZ-induced diabetic mice to assess the effects of high glucose on osteoblast differentiation and mitochondrial function.
Limitations
The precise mechanism of BMP9 activation of the PINK1/Drp1 pathway needs further investigation, and the study did not use osteoblast conditional gene knockout models.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website