Journal: Frontiers in Cell and Developmental Biology
Article Title: Diabetes Medication Metformin Inhibits Osteoclast Formation and Activity in In Vitro Models for Periodontitis
doi: 10.3389/fcell.2021.777450
Figure Lengend Snippet: Graphical abstract. Diabetes and periodontitis are clinically associated.Mouse experimental periodontitis modelas and preliminary clinical studies show that diabetes drug metformin has beneficial effects on the periodontium, the tooth associated tissues including bone. This study has analyzed the effect of metformin on clinically relevant cell models: periodontal ligament derived fibroblasts (PDLF) that were either steered into osteogenesis pathways or into osteoclastogenesis pathways, together with peripheral blood monocnuclear cells (PBMCs) under continual exposure to metformin. The effect of metformin on osteoclast formation was further assessed with CD14 + monocytes that were subjected to osteoclast differentiation with osteoclastogenesis driving cytokines M-CSF and RANKL. Our results all indicate an inhibitory effect on osteoclast formation, which could, in a broader sense, be the mechanism that explains clinically observed bone improvement in metformin users.
Article Snippet: For osteoclastogenesis assays, peripheral blood mononuclear cells (PBMCs) derived from a buffy coat (Sanquin, Amsterdam) were added as source containing osteoclast precursors.
Techniques: Derivative Assay