共 34 条
Full activation of thermogenesis in brown adipocytes requires Basigin action
被引:3
作者:
Rupar, Kaja
[1
]
Isidor, Marie S.
[1
]
Argemi-Muntadas, Lidia
[1
]
Agueda-Oyarzabal, Marina
[1
]
Plucinska, Kaja
[1
]
Brown, Erin L.
[1
]
Mattanovich, Matthias
[1
,2
]
Bossi, Simone
[1
]
Tozzi, Marco
[1
]
Tandio, David
[1
]
Petersen, Patricia S. S.
[1
]
Henriksen, Tora I.
[3
]
Trost, Kajetan
[1
]
Hansen, Jacob B.
[4
]
Gerhart-Hines, Zachary
[1
]
Nielsen, Soren
[3
]
Moritz, Thomas
[1
]
Emanuelli, Brice
[1
,5
]
机构:
[1] Univ Copenhagen, Novo Nord Fdn Ctr Basic Metab Res, Fac Hlth & Med Sci, Copenhagen, Denmark
[2] Tech Univ Denmark, Novo Nord Fdn Ctr Biosustainabil, Lyngby, Denmark
[3] Univ Copenhagen, Rigshospitalet, Fac Hlth & Med Sci, Dept Infect Dis,Ctr Phys Act Res, Copenhagen, Denmark
[4] Univ Copenhagen, Fac Sci, Dept Biol, Sect Cell Biol & Physiol, Copenhagen, Denmark
[5] Univ Copenhagen, Novo Nord Fdn, Fac Hlth & Med Sci, Ctr Basic Metab Res, Blegdamsvej 3B,Maersk Tarnet 7 Sal, DK-2200 Copenhagen N, Denmark
关键词:
Basigin;
brown adipose tissue;
metabolism;
mitochondria;
thermogenesis;
ADIPOSE-TISSUE;
CD147;
FAT;
PROGRESSION;
EXPRESSION;
MCT1;
D O I:
10.1111/febs.16716
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Exploring mechanisms responsible for brown adipose tissue's (BAT) high metabolic activity is crucial to exploit its energy-dissipating ability for therapeutic purposes. Basigin (Bsg), a multifunctional highly glycosylated transmembrane protein, was recently proposed as one of the 98 critical markers allowing to distinguish 'white' and 'brown' adipocytes, yet its function in thermogenic brown adipocytes is unknown. Here, we report that Bsg is negatively associated with obesity in mice. By contrast, Bsg expression increased in the mature adipocyte fraction of BAT upon cold acclimation. Additionally, Bsg levels were highly induced during brown adipocyte maturation in vitro and were further increased upon beta-adrenergic stimulation in a HIF-1 alpha-dependent manner. siRNA-mediated Bsg gene silencing in cultured brown adipocytes did not impact adipogenesis nor mitochondrial function. However, a significant decrease in mitochondrial respiration, lipolysis and Ucp1 transcription was observed in adipocytes lacking Bsg, when activated by norepinephrine. Furthermore, using gas chromatography/mass spectrometry-time-of-flight analysis to assess the composition of cellular metabolites, we demonstrate that brown adipocytes lacking Bsg have lower levels of intracellular lactate and acetoacetate. Bsg was additionally required to regulate intracellular AcAc and tricarboxylic acid cycle intermediate levels in NE-stimulated adipocytes. Our study highlights the critical role of Bsg in active brown adipocytes, possibly by controlling cellular metabolism.
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页码:2673 / 2691
页数:19
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