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在维纳综合征中,WRN损失加速了异常脂肪细胞代谢

Yuyao Tian^1,2, Sofie Lautrup³, Patrick Wai Nok Law¹

¹Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR.

Cell & bioscience

|January 6, 2024

概括

维纳蛋白 (WRN) 的损失加速脂肪细胞的发育,并在早期改变基因表达. 尼古丁胺 рибоoside (NR) 补充剂可以恢复维纳综合征模型中的正常脂肪代谢.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
代谢障碍代谢障碍代谢障碍

背景情况:

代谢功能障碍是维纳综合征 (WS) 的关键特征,但其机制尚未完全理解.
沃纳蛋白 (WRN) 的损失在早期加速脂肪生成 (脂肪细胞形成),无论是体外还是体外.
在早期脂肪生成过程中,WRN枯竭暂时上调晚期脂肪细胞特异基因.

研究的目的:

阐明维纳综合征中代谢功能障碍的潜在机制.
研究WRN在脂肪生成和代谢调节中的作用.
确定潜在的治疗干预措施,用于WS的代谢障碍.

主要方法:

生成wrn-/-变异斑马鱼用于体内脂肪代谢评估.
利用RNA-seq和ATAC-seq在WRN贫乏脂肪细胞中进行转录和染色质可访问性分析.
进行了ChIP-seq以调查代谢功能障碍的调节机制.

主要成果:

缺少WRN导致SMARCA5上调,这是染色质重塑和基因调节的关键因素.
恢复WRN表达使SMARCA5水平和脂肪细胞分化正常化.
在干细胞和斑马鱼模型中,尼古丁胺 рибоoside (NR) 补充剂成功地恢复了脂肪细胞代谢.

结论:

发现了一种新的机制,通过它WRN影响早期脂肪生成.
确定了WS中代谢功能障碍的潜在治疗策略 (NR补充).
提供了对抗衰老和与年龄有关的疾病的潜在治疗方法的见解.

关键词:

不正常的新陈代谢.这就是SMARCA5的标志.这是一个WRN.沃尔纳综合征是什么意思沃尔纳综合征是什么意思

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