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. 2021 Dec;1866(12):159033.
doi: 10.1016/j.bbalip.2021.159033. Epub 2021 Sep 3.

N-butylidenephthalide ameliorates high-fat diet-induced obesity in mice and promotes browning through adrenergic response/AMPK activation in mouse beige adipocytes

Kang-Yun Lu  1 , Kingsley Theras Primus Dass  2 , Shinn-Zong Lin  3 , Yu-Hua Tseng  4 , Shih-Ping Liu  5 , Horng-Jyh Harn  6
Affiliations

N-butylidenephthalide ameliorates high-fat diet-induced obesity in mice and promotes browning through adrenergic response/AMPK activation in mouse beige adipocytes

Kang-Yun Lu et al. Biochim Biophys Acta Mol Cell Biol Lipids. 2021 Dec.

Abstract

Thermogenesis (non-exercise activity) in brown adipose tissue (BAT) promotes energy expenditure because of its higher number of mitochondria than white adipose tissue (WAT). The main function of thermogenesis in BAT can counteract obesity through the dissipation of calories as heat. N-butylidenephthalide (BP) is a natural derivative from Angelica sinensis, a Chinese herb that has been used for thousands of years. In this report, we demonstrated that BP improved the metabolic profiles of mice with high fat diet-induced obesity (DIO) by preventing weight gain, improving serum blood parameters, enhancing energy expenditure, stimulating white fat browning, and reversing hepatic steatosis. Further investigations demonstrated that BP administration upregulated the mRNA expression of beige (CD137, TMEM26) and brown fat selected genes (UCP1, PRDM16, PGC-1α, PPARγ) in white adipose tissues. In vitro studies, BP treatment increased multilocular lipid droplet levels, induced β-adrenergic receptor (cAMP/PKA) and AMP-activated protein kinase (AMPK) signaling (AMPK/acetyl-CoA carboxylase/SIRT1), and increased oxygen consumption in murine differentiated beige adipocytes, and the effects of BP were blocked by an AMPK inhibitor. BP promoted the interaction of AMPK with PGC-1α in beige adipocytes. Our findings provide novel insights into the application of BP in regulating energy metabolism and suggest its utility for clinical use in the treatment of obesity and related diseases.

Keywords: AMP-activated protein kinase (AMPK); Angelica sinensis; Metabolism; Obesity; Thermogenesis; Traditional Chinese medicines (TCMs).

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