Journal
CELL METABOLISM
Volume 28, Issue 6, Pages 907-+Publisher
CELL PRESS
DOI: 10.1016/j.cmet.2018.08.005
Keywords
-
Categories
Funding
- Peter und Traudl Engelhorn Stiftung
- European Research Council under the European Union's Seventh Framework Program (FP/2007-2013)/ERC [336607]
- Clayton Foundation
- Louis-Jeantet Foundation
- Swiss National Science Foundation
Ask authors/readers for more resources
Caloric restriction (CR) stimulates development of functional beige fat and extends healthy lifespan. Here we show that compositional and functional changes in the gut microbiota contribute to a number of CR-induced metabolic improvements and promote fat browning. Mechanistically, these effects are linked to a lower expression of the key bacterial enzymes necessary for the lipid A biosynthesis, a critical lipopolysaccharide (LPS) building component. The decreased LPS dictates the tone of the innate immune response during CR, leading to increased eosinophil infiltration and anti-inflammatory macrophage polarization in fat of the CR animals. Genetic and pharmacological suppression of the LPS-TLR4 pathway or transplantation with Tlr4(-/-) bone-marrow-derived hematopoietic cells increases beige fat development and ameliorates diet-induced fatty liver, while Tlr4(-/- )or microbiota-depleted mice are resistant to further CR-stimulated metabolic alterations. These data reveal signals critical for our understanding of the microbiota-fat signaling axis during CR and provide potential new anti-obesity therapeutics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available