The cellular energy sensor AMPK is a highly
conserved Ser/Thr protein kinase complex that plays a
crucial role in the regulation of cellular energy metabolism
[29]. Previous study has established AMPK as an
upstream regulator of both lipid and glucose metabolism
[30]. The phosphorylation of AMPK resulted in reduced
lipid biosynthesis via inhibiting the expression of SREBP-
1c and its target genes, ACC and FASN [31]. Consistent
with this, our study showed that GA significantly
downregulated the expression of genes related to lipid
metabolism accompanied with AMPK activation. And
knockdown AMPK rescued these effects induced by GA.