A Hypothalamic Phosphatase Switch Coordinates Energy Expenditure with Feeding

作者：Dodd Garron T; Andrews Zane B; Simonds Stephanie E; Michael Natalie J; DeVeer Michael; Bruening Jens C; Spanswick David; Cowley Michael A; Tiganis Tony

来源：Cell Metabolism, 2017, 26(2): 375-+.

DOI：10.1016/j.cmet.2017.07.013

Beige adipocytes can interconvert between white and brown-like states and switch between energy storage versus expenditure. Here we report that beige adipocyte plasticity is important for feeding-associated changes in energy expenditure and is coordinated by the hypothalamus and the phosphatase TCPTP. A fasting-induced and glucocorticoid-mediated induction of TCPTP, inhibited insulin signaling in AgRP/NPY neurons, repressed the browning of white fat and decreased energy expenditure. Conversely feeding reduced hypothalamic TCPTP, to increase AgRP/NPY neuronal insulin signaling, white adipose tissue browning and energy expenditure. The feeding-induced repression of hypothalamic TCPTP was defective in obesity. Mice lacking TCPTP in AgRP/NPY neurons were resistant to diet-induced obesity and had increased beige fat activity and energy expenditure. The deletion of hypothalamic TCPTP in obesity restored feeding-induced browning and increased energy expenditure to promote weight loss. Our studies define a hypothalamic switch that coordinates energy expenditure with feeding for the maintenance of energy balance.

• 出版日期2017-8-1