Methyl Carnosate, a Carnosic Acid Derivative, Attenuates Osteoclastogenesis via Modulation of RANKL-Induced NF-κB Activity
Zhang, L.; Xie, C.; Bao, X.; Tabandeh, M.; Deepak, V.
Show abstract
Excessive osteoclast activity underlies bone-destructive diseases including osteoporosis and rheumatoid arthritis. RANKL-induced NF-{kappa}B signaling represents a critical pathway driving osteoclastogenesis. Here, we report that methyl carnosate, a naturally occurring diterpene from rosemary, inhibits RANKL-induced osteoclastogenesis with an IC50 of 1.2 M and displays greater potency than its parent compound, carnosic acid. Promoter-reporter analysis further indicates attenuation of RANKL-induced NF-{kappa}B activity. These findings identify methyl carnosate as a potential lead compound for the development of bone-protective therapeutics.
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