USF1 deficiency activates brown adipose tissue and improves cardiometabolic health

Pirkka-Pekka Laurila*, Jarkko Soronen, Sander Kooijman, Saara Forsström, Mariëtte R Boon, Ida Surakka, Essi Kaiharju, Claudia P Coomans, Sjoerd A A Van Den Berg, Anu Autio, Antti-Pekka Sarin, Johannes Kettunen, Emmi Tikkanen, Tuula Manninen, Jari Metso, Reija Silvennoinen, Krista Merikanto, Maija Ruuth, Julia Perttilä, Anne MäkeläAyaka Isomi, Anita M Tuomainen, Anna Tikka, Usama Abo Ramadan, Ilkka Seppälä, Terho Lehtimäki, Johan Eriksson, Aki Havulinna, Antti Jula, Pekka J Karhunen, Veikko Salomaa, Markus Perola, Christian Ehnholm, Miriam Lee-Rueckert, Miranda Van Eck, Anne Roivainen, Marja-Riitta Taskinen, Leena Peltonen, Eero Mervaala, Anu Jalanko, Esa Hohtola, Vesa M Olkkonen, Samuli Ripatti, Petri T Kovanen, Patrick C N Rensen, Anu Suomalainen, Matti Jauhiainen*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

59 Citations (Scopus)

Abstract

USF1 (upstream stimulatory factor 1) is a transcription factor associated with familial combined hyperlipidemia and coronary artery disease in humans. However, whether USF1 is beneficial or detrimental to cardiometabolic health has not been addressed. By inactivating USF1 in mice, we demonstrate protection against diet-induced dyslipidemia, obesity, insulin resistance, hepatic steatosis, and atherosclerosis. The favorable plasma lipid profile, including increased high-density lipoprotein cholesterol and decreased triglycerides, was coupled with increased energy expenditure due to activation of brown adipose tissue (BAT). Usf1 inactivation directs triglycerides from the circulation to BAT for combustion via a lipoprotein lipase-dependent mechanism, thus enhancing plasma triglyceride clearance. Mice lacking Usf1 displayed increased BAT-facilitated, diet-induced thermogenesis with up-regulation of mitochondrial respiratory chain complexes, as well as increased BAT activity even at thermoneutrality and after BAT sympathectomy. A direct effect of USF1 on BAT activation was demonstrated by an amplified adrenergic response in brown adipocytes after Usf1 silencing, and by augmented norepinephrine-induced thermogenesis in mice lacking Usf1. In humans, individuals carrying SNP (single-nucleotide polymorphism) alleles that reduced USF1 mRNA expression also displayed a beneficial cardiometabolic profile, featuring improved insulin sensitivity, a favorable lipid profile, and reduced atherosclerosis. Our findings identify a new molecular link between lipid metabolism and energy expenditure, and point to the potential of USF1 as a therapeutic target for cardiometabolic disease.

Original languageEnglish
Pages (from-to)323ra13
JournalScience Translational Medicine
Volume8
Issue number323
DOIs
Publication statusPublished - 27 Jan 2016
Externally publishedYes

Bibliographical note

Copyright © 2016, American Association for the Advancement of Science.

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