Adipose tissue-derived neurotrophic factor 3 regulates sympathetic innervation and thermogenesis in adipose tissue.

Adipose tissue-derived neurotrophic factor 3 regulates sympathetic innervation and thermogenesis in adipose tissue.
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DOI:
10.1038/s41467-021-25766-2
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发表时间:
2021-09-10
影响因子:
16.6
通讯作者:
Shi H
Shi H
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Cui X;Jing J;Wu R;Cao Q;Li F;Li K;Wang S;Yu L;Schwartz G;Shi H;Xue B;Shi H

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Activation of brown fat thermogenesis increases energy expenditure and alleviates obesity. Sympathetic nervous system (SNS) is important in brown/beige adipocyte thermogenesis. Here we discover a fat-derived “adipokine” neurotrophic factor neurotrophin 3 (NT-3) and its receptor Tropomyosin receptor kinase C (TRKC) as key regulators of SNS growth and innervation in adipose tissue. NT-3 is highly expressed in brown/beige adipocytes, and potently stimulates sympathetic neuron neurite growth. NT-3/TRKC regulates a plethora of pathways in neuronal axonal growth and elongation. Adipose tissue sympathetic innervation is significantly increased in mice with adipocyte-specific NT-3 overexpression, but profoundly reduced in mice with TRKC haploinsufficiency (TRKC +/−). Increasing NT-3 via pharmacological or genetic approach promotes beige adipocyte development, enhances cold-induced thermogenesis and protects against diet-induced obesity (DIO); whereas TRKC + /− or SNS TRKC deficient mice are cold intolerant and prone to DIO. Thus, NT-3 is a fat-derived neurotrophic factor that regulates SNS innervation, energy metabolism and obesity. Activation of brown adipose tissue thermogenesis increases energy expenditure and promotes weight loss in mice. Here the authors identify neurotrophic factor neurotrophin 3 (NT-3) as an adipokine that regulates sympathetic nervous system growth and innervation in adipose tissue and increases white adipose beiging.
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