Effect of Magnolol on the Function of Osteoblastic MC3T3-E1 Cells

Abstract EN

|Objectives.

In the present study, the ability of magnolol, a hydroxylated biphenyl compound isolated from Magnolia officinalis, to stimulate osteoblast function and inhibit the release of bone-resorbing mediators was investigated in osteoblastic MC3T3-E1 cells.

Methods.

Osteoblast function was measured by cell growth, alkaline phosphatase activity, collagen synthesis, and mineralization.

Glutathione content was also measured in the cells.

Bone-resorbing cytokines, receptor activator of nuclear factor-κB ligand (RANKL), TNF-α, and IL-6 were measured with an enzyme immunoassay system.

Results.

Magnolol caused a significant elevation of cell growth, alkaline phosphatase activity, collagen synthesis, mineralization, and glutathione content in the cells (P<0.05).

Skeletal turnover is orchestrated by a complex network of regulatory factors.

Among cytokines, RANKL, TNF-α, and IL-6 were found to be key osteoclastogenetic molecules produced by osteoblasts.

Magnolol significantly (P<0.05) decreased the production of osteoclast differentiation inducing factors such as RANKL, TNF-α, and IL-6 in the presence of antimycin A, which inhibits mitochondrial electron transport and has been used as an ROS generator.

Conclusion.

Magnolol might be a candidate as an agent for the prevention of bone disorders such as osteoporosis.