Ginkgetin, a biflavone from Ginkgo biloba leaves, prevents adipogenesis through STAT5-mediated PPARγ and C/EBPα regulation

Publication date: Available online 22 November 2018Source: Pharmacological ResearchAuthor(s): Young-Lai Cho, Jong-Gil Park, Hyo Jin Kang, Wooil Kim, Min Ji Cho, Ju-Hong Jang, Min-Gi Kwon, Sungsik Kim, Sang-Hyun Lee, Jangwook Lee, Yeon-Gu Kim, Young-Jun Park, Won Kon Kim, Kwang-Hee Bae, Byoung-Mog Kwon, Sang J. Chung, Jeong-Ki MinAbstractAdipogenesis involved in hypertrophy and hyperplasia of adipocytes is responsible for expanding the mass of adipose tissues in obese individuals. Peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT/enhancer-binding protein α (C/EBPα) are two principal transcription factors induced by delicate signaling pathways, including signal transducer and activator of transcription 5 (STAT5), in adipogenesis. Here, we demonstrated a novel role of ginkgetin, a biflavone from Ginkgo biloba leaves, as a STAT5 inhibitor that blocks the differentiation of preadipocytes into adipocytes. During the differentiation of 3T3-L1 cells, ginkgetin treatment during the first 2 days markedly inhibited the formation of lipid-bearing adipocytes. PPARγ and C/EBPα expression was decreased in 3T3-L1 cells during adipogenesis following ginkgetin treatment, whereas no change was observed in C/EBPβ or C/EBPδ expression. Inhibition of PPARγ and C/EBPα expression by ginkgetin occurred through the prevention of STAT5 activation during the initiation phase of adipogenesis. In addition, ginkgetin-mediated the inhibition of adipogenesis was recapitulated in the di...
Source: Pharmacological Research - Category: Drugs & Pharmacology Source Type: research