Clear input
Advanced
Help
NCBI will begin redirecting all HTTP traffic to HTTPS on Thursday, November 10 at 9 AM EST (2 PM UTC). Read more.
Result Filters
Format: Abstract
Send to
Nat Commun. 2016 Jul 27;7:12205. doi: 10.1038/ncomms12205.
Lkb1 controls brown adipose tissue growth and thermogenesis by regulating the intracellular localization of CRTC3.
Shan T1,2, Xiong Y1,3, Zhang P1, Li Z4, Jiang Q1, Bi P1, Yue F1, Yang G3, Wang Y2, Liu X4,5, Kuang S1,5.
Author information
Abstract
Brown adipose tissue (BAT) dissipates energy through Ucp1-mediated uncoupled respiration and its activation may represent a therapeutic strategy to combat obesity. Here we show that Lkb1 controls BAT expansion and UCP1 expression in mice. We generate adipocyte-specific Lkb1 knockout mice and show that, compared with wild-type littermates, these mice exhibit elevated UCP1 expression in BAT and subcutaneous white adipose tissue, have increased BAT mass and higher energy expenditure. Consequently, KO mice have improved glucose tolerance and insulin sensitivity, and are more resistant to high-fat diet (HFD)-induced obesity. Deletion of Lkb1 results in a cytoplasm to nuclear translocation of CRTC3 in brown adipocytes, where it recruits C/EBPβ to enhance Ucp1 transcription. In parallel, the absence of Lkb1 also suppresses AMPK activity, leading to activation of the mTOR signalling pathway and subsequent BAT expansion. These data suggest that inhibition of Lkb1 or its downstream signalling in adipocytes could be a novel strategy to increase energy expenditure in the context of obesity, diabetes and other metabolic diseases.
PMID:
27461402
PMCID:
PMC4974456
DOI:
10.1038/ncomms12205
[PubMed - in process]
Free PMC Article
Images from this publication.See