Title:VK2 Promotes Osteogenic Differentiation of BMSCs against High Glucose
Exposure via Modulation of Intracellular Oxidative Stress
Volume: 29
Issue: 9
Author(s): Wenlai Fang, Yiyun Lv, Shuqing Jin, Zheng Zhu and Yunzhen Chen*
Affiliation:
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
Keywords:
Diabetic osteoporosis (DOP), high glucose (HG), vitamin K2 (VK2), reactive oxygen species (ROS), mitochondrial dysfunction, bone mesenchymal stem cells (BMSCs).
Abstract:
Introduction: Diabetic osteoporosis (DOP) has gradually gained public attention. The clinical manifestations
of DOP include bone mass loss, bone microstructural damage, and increased bone fragility.
Methods: Intracellular reactive oxygen species (ROS) production was significantly increased under high glucose
(HG) conditions, with deleterious effects on bone mesenchymal stem cells (BMSCs) proliferation and osteogenic
differentiation. Vitamin K2 (VK2) has been demonstrated to promote bone formation both in vitro and
in vivo.
Results: However, its potential role in diabetes-induced osteoporosis remains unelucidated. This study aims to
verify whether VK2 treatment could relieve the deleterious effects of high glucose on BMSCs and delay the progression
of osteoporosis. The results revealed that the HG environment downregulated the expression of osteogenesis-
related proteins.
Conclusion: Correspondingly, VK2 treatment reversed the osteogenic phenotype of BMSCs under HG conditions.
In addition, using an established diabetes-induced osteoporosis rat model, we found that VK2 administration
could restore bone mass and microstructure. In conclusion, our results provide a promising therapeutic option
in the clinical treatment of DOP.