Brown adipose tissue thermogenic capacity is regulated by Elovl6
Tan, Chong Yew
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Tan, C. Y., Virtue, S., Bidault, G., Dale, M., Hagen, R., Griffin, J., & Vidal-Puig, A. (2015). Brown adipose tissue thermogenic capacity is regulated by Elovl6. Cell Reports, 13 2039-2047. https://doi.org/10.1016/j.celrep.2015.11.004
Although many transcriptional pathways regulating BAT have been identified, the role of lipid biosynthetic enzymes in thermogenesis has been less investigated. Whereas cold exposure causes changes in the fatty acid composition of BAT, the functional consequences of this remains relatively unexplored. In this study, we demonstrate that the enzyme Elongation of Very Long Chain fatty acids 6 (Elovl6) is necessary for the thermogenic action of BAT. Elovl6 is responsible for converting C16 non-essential fatty acids into C18 species. Loss of Elovl6 does not modulate traditional BAT markers; instead, it causes reduced expression of mitochondrial electron transport chain components and lower BAT thermogenic capacity. The reduction in BAT activity appears to be counteracted by increased beiging of scWAT. When beige fat is disabled by thermoneutrality or aging, Elovl6 KO mice gain weight and have increased scWAT mass and impaired carbohydrate metabolism. Overall, our study suggests fatty acid chain length is important for BAT function.
Elongase, Elovl6, Brown adipose tissue, Adaptive thermogenesis, Fatty acid acyl chain length, Energy expenditure
We thank the BBSRC, MRC, EU FP7 5 BetaBAT and Wellcome Trust for funding this work.
British Heart Foundation (PG/12/53/29714)
Wellcome Trust (090662/Z/09/Z)
Medical Research Council (MC_UU_12012/5/B)
EC FP7 CP (277713)
Medical Research Council (MC_PC_13030)
External DOI: https://doi.org/10.1016/j.celrep.2015.11.004
This record's URL: https://www.repository.cam.ac.uk/handle/1810/251442
Creative Commons Attribution 4.0 International License
Licence URL: http://creativecommons.org/licenses/by/4.0/