Methods and results—We validated inflammatory and adipogenic properties of α-MG using a
Nfkb-RE/GFP biosensor assay. Next, we identified unique properties of γ-MG, a minor
mangosteen xanthone. γ-MG suppressed adipogenesis and adiponectin, but inhibited the Nfkb-RE/
GFP reporter and secretion of inflammatory MCP-1 as compared to the control adipocytes. We
found that the inhibition of adipogenesis and Nfkb-mediated inflammation depends on a dosedependent
reduction of Nrf2 promoter activity by α-MG. The Nrf2 inhibition resulted in the
reduced Pparg expression. α-MG did not directly influence Pparg activity in Fabp4-P/CFP
adipocytes.