Naringenin Promotes Thermogenic Gene Expression in Human White Adipose Tissue.

Naringenin Promotes Thermogenic Gene Expression in Human White Adipose Tissue.
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柚皮素促进人白色脂肪组织中的产热基因表达。

DOI:
10.1002/oby.22352
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发表时间:
2019-01
期刊:
Obesity (Silver Spring, Md.)
影响因子:
--
通讯作者:
Coulter AA
Coulter AA
中科院分区:
其他
文献类型:
--
作者:
Rebello CJ;Greenway FL;Lau FH;Lin Y;Stephens JM;Johnson WD;Coulter AA

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柚皮素是一种柑橘类黄酮,可防止饮食诱导的体重增加,并改善啮齿动物的葡萄糖和脂质代谢。有证据表明,柚皮素激活棕色脂肪,增加小鼠的能量消耗,但对人类的影响知之甚少。我们的目标是研究柚皮素对脂肪组织能量消耗的影响。用柚皮素处理人白色脂肪细胞培养物(hADSC)和皮下腹部脂肪组织(pWAT)7-14天。测量参与产热和葡萄糖代谢的候选基因的表达(qRT-PCR,免疫印迹)。使用Seahorse Flux分析仪测量hADSC中的耗氧速率(OCR)。在hADSC中,柚皮素增加了与产热和脂肪氧化相关的基因的表达,包括解偶联蛋白1、脂肪甘油三酯脂肪酶,以及与胰岛素敏感性相关的关键因子,包括葡萄糖转运蛋白4、脂联素和碳水化合物反应元件结合蛋白(p<0.01)。在pWAT中观察到类似的反应。基础OCR、ATP连锁OCR、最大OCR和储备OCR在柚苷素处理的hADSC中增加(p<0.01)。柚皮素增加hADSC中的能量消耗,并刺激hADSC和pWAT中参与产热和胰岛素敏感性的关键酶的表达。柚皮素可促进人白色脂肪组织转化为棕色/米色表型。
Naringenin, a citrus flavonoid, prevents diet-induced weight gain and improves glucose and lipid metabolism in rodents. There is evidence that naringenin activates brown fat and increases energy expenditure in mice, but little is known about its effects in humans. Our goal was to examine the effects of naringenin on energy expenditure in adipose tissue. Human white adipocyte cultures (hADSC), and subcutaneous abdominal adipose tissue (pWAT) were treated with naringenin for 7–14 days. Expression (qRT-PCR, immunoblotting) of candidate genes involved in thermogenesis and glucose metabolism was measured. Oxygen consumption rate (OCR) was measured in hADSC using a Seahorse Flux analyzer. In hADSC, naringenin increased expression of the genes associated with thermogenesis and fat oxidation including uncoupling protein 1, adipose triglyceride lipase, and key factors associated with insulin sensitivity including glucose transporter 4, adiponectin, and carbohydrate response element binding protein (p<0.01). Similar responses were observed in pWAT. Basal, ATP-linked, maximal, and reserve OCR increased in the naringenin-treated hADSC (p<0.01). Naringenin increases energy expenditure in hADSC and stimulates expression of key enzymes involved in thermogenesis and insulin sensitivity in hADSC and pWAT. Naringenin may promote conversion of human white adipose tissue to a brown/beige phenotype.
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