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Phytanic acid activates PPAR alpha to promote beige adipogenic differentiation of preadipocytes

机译:植物酸激活PPARα促进米色脂肪发生的普通脂肪细胞分化

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A better understanding of the mechanisms of beige and brown adipogenesis is needed for developing strategies to prevent and treat obesity and associated metabolic disorders. Phytanic acid (PA) exists in a wide range of foods, especially in milk fat and marine foods, but its effects on obesity and beige adipogenesis remain poorly defined. The objective is to investigate the effects and regulatory mechanisms of PA in the beige adipogenesis. In 3T3-L1 preadipocytes, PA elevated the expression of brown adipogenic markers, suggesting that PA promotes beige adipogenic differentiation in committed adipogenic cells. In uncommitted C3H10T1/2 cells, while PA increased PGC1 alpha expression, it did not increase brown adipogenic regulators PRDM16 or UCP1 expression, suggesting that PA had no significant effects on brown adipocyte commitment. PA also enhanced mitochondrial biogenesis and oxygen consumption. Promotion of both mitochondriogenesis and beige adipogenic differentiation were blocked by using PPAR alpha antagonist or with Ppar alpha knockdown, showing that PA-mediated beige/ brown adipogenic differentiation is dependent on PPAR alpha. Additionally, the PA-regulated effect is independent on beta 3-adrenergic receptor. Taken together, PA promotes beige adipogenic differentiation, but not the commitment of progenitor cells to the brown adipocyte lineage. PPAR alpha is a key mediator during PA-induced beige/brown adipogenic differentiation. (C) 2019 Elsevier Inc. All rights reserved.
机译:对于制定抗肥胖和治疗肥胖和相关代谢障碍的策略,需要更好地了解米色和棕色脂肪发生的机制。植物酸(PA)存在于各种食物中,特别是在牛奶脂肪和海洋食品中,但其对肥胖和米色脂肪发生的影响仍然定义不足。目的是探讨PA在米色脂肪生成中的效果和调节机制。在3T3-L1前脂肪细胞中,PA升高了棕色脂肪原标记的表达,表明PA促进了造成的脂肪组细胞中的米色脂肪切分化。在未提交的C3H10T1 / 2细胞中,虽然PA增加了PGC1α表达,但它没有增加棕色脂肪稳压剂PRDM16或UCP1表达,表明PA对棕色脂肪细胞承诺没有显着影响。 PA还增强了线粒体生物发生和氧气消耗。通过使用PPARα拮抗剂或PPARα敲低阻止促进线粒体生成和米色脂肪生成分化,表明PA介导的米色/棕色脂肪生成分化取决于PPARα。另外,PA调节的效果是β3-肾上腺素能受体的独立性。携带PA促进米色脂肪生成分化,但不是祖细胞对棕色脂肪细胞谱系的承诺。 PPARα是PA诱导米色/棕色脂肪化分化期间的关键介体。 (c)2019 Elsevier Inc.保留所有权利。

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