title: Mitochondrial ROS regulate thermogenic energy expenditure and sulfenylation of UCP1.
abstract: Brown and beige adipose tissues can dissipate chemical energy as heat through thermogenic respiration, which requires uncoupling protein 1 (UCP1). Thermogenesis from these adipocytes can combat obesity and diabetes, encouraging investigation of factors that control UCP1-dependent respiration in vivo. Here we show that acutely activated thermogenesis in brown adipose tissue is defined by a substantial increase in levels of mitochondrial reactive oxygen species (ROS). Remarkably, this process supports in vivo thermogenesis, as pharmacological depletion of mitochondrial ROS results in hypothermia upon cold exposure, and inhibits UCP1-dependent increases in whole-body energy expenditure. We further establish that thermogenic ROS alter the redox status of cysteine thiols in brown adipose tissue to drive increased respiration, and that Cys253 of UCP1 is a key target. UCP1 Cys253 is sulfenylated during thermogenesis, while mutation of this site desensitizes the purine-nucleotide-inhibited state of the carrier to adrenergic activation and uncoupling. These studies identify mitochondrial ROS induction in brown adipose tissue as a mechanism that supports UCP1-dependent thermogenesis and whole-body energy expenditure, which opens the way to improved therapeutic strategies for combating metabolic disorders.
authors.affiliation: Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.|Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Edward T
authors.initials: ET
authors.lastname: Chouchani
authors.affiliation: Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.|Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Lawrence
authors.initials: L
authors.lastname: Kazak
authors.affiliation: Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Mark P
authors.initials: MP
authors.lastname: Jedrychowski
authors.affiliation: Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.|Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Gina Z
authors.initials: GZ
authors.lastname: Lu
authors.affiliation: Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Brian K
authors.initials: BK
authors.lastname: Erickson
authors.affiliation: Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: John
authors.initials: J
authors.lastname: Szpyt
authors.affiliation: Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA.
authors.forename: Kerry A
authors.initials: KA
authors.lastname: Pierce
authors.affiliation: Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Dina
authors.initials: D
authors.lastname: Laznik-Bogoslavski
authors.affiliation: Department of Neurology, Harvard Medical School, Boston, Massachusetts 02215, USA.
authors.forename: Ramalingam
authors.initials: R
authors.lastname: Vetrivelan
authors.affiliation: Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA.
authors.forename: Clary B
authors.initials: CB
authors.lastname: Clish
authors.affiliation: MRC Mitochondrial Biology Unit, Hills Road, Cambridge CB2 0XY, UK.
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Robinson
authors.affiliation: Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Steve P
authors.initials: SP
authors.lastname: Gygi
authors.affiliation: Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.|Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Bruce M
authors.initials: BM
authors.lastname: Spiegelman
mesh_terms: D002001:Adipose Tissue, Brown / Q000737:chemistry / Q000166:cytology / Q000378:metabolism; D000818:Animals; D019069:Cell Respiration; D003545:Cysteine / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D004734:Energy Metabolism / Q000187:drug effects; D005260:Female; D006801:Humans; D007473:Ion Channels / Q000737:chemistry* / Q000172:deficiency / Q000235:genetics / Q000378:metabolism*; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008928:Mitochondria / Q000187:drug effects / Q000378:metabolism*; D024101:Mitochondrial Proteins / Q000737:chemistry* / Q000172:deficiency / Q000235:genetics / Q000378:metabolism*; D050505:Mutant Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D010084:Oxidation-Reduction; D017382:Reactive Oxygen Species / Q000378:metabolism*; D013438:Sulfhydryl Compounds / Q000378:metabolism; D022722:Thermogenesis / Q000187:drug effects; D000071256:Uncoupling Protein 1
chemical_list: D007473:Ion Channels; D024101:Mitochondrial Proteins; D050505:Mutant Proteins; D017382:Reactive Oxygen Species; D013438:Sulfhydryl Compounds; C000604371:UCP1 protein, human; C000604372:Ucp1 protein, mouse; D000071256:Uncoupling Protein 1; D003545:Cysteine