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酒精性肝病中循环的细胞外囊泡会影响骨肌肉的平衡和差异化

Laura Barberi¹, Cristiana Porcu¹, Caterina Boccia¹

¹DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy.

Journal of cachexia, sarcopenia and muscle

|February 8, 2025

概括

来自酒精性肝病 (ALD) 的循环细胞外囊泡 (EVs) 通过改变肌源性程序来促进肌肉缩. 这些携带特定微RNA的EV代表了减轻ALD患者肌肉损失的潜在治疗标.

科学领域:

肌肉生物学肌肉生物学
肝病学肝病学是一种肝病学.
细胞外囊泡细胞外囊泡

背景情况:

酒精性肝病 (ALD) 肌肉变化的机制尚不清楚.
循环细胞外囊泡 (EVs) 在ALD中介于肝肌相互作用的作用仍然难以捉摸.

研究的目的:

研究循环和肝脏EVs在ALD相关的肌肉缩中的作用.
在涉及ALD肉症的EV中识别潜在的miRNA媒介.

主要方法:

建立了ALD诱导的肉症的小鼠模型.
从ALD小鼠和肝硬化患者中分离出肝脏和循环的EV.
评估了EVs对肌肉细胞培养 (C2C12和初级人体细胞) 的影响.
分析了EVs的miRNA配置文件.

主要成果:

来自ALD的EVs (肝脏和循环) 被肌肉细胞内化,损害了肌原计划.
电动汽车减少了蛋白质合成,增加了肌肉缩标志物 (Atrogin-1,MuRF1) 和自.
在ALD小鼠和肝硬化患者的EV中发现了特定miRNAs (miR-21,miR-155,miR-223,miR-122) 的升高水平.
从肝硬化患者获得的EV治疗的人类肌肉细胞显示蛋白质合成减少和缩标志物增加.

结论:

来自ALD的循环EV在肌肉恒温和肌肉生成程序中发挥着关键作用.
这些EV代表了ALD肌肉损失的潜在治疗点.

关键词:

酒精性肝病 (ALD) 是一种肝病.细胞外囊泡 (EVs) 的产生.肝脏与肌肉的相互作用微RNA (miRNA) 是一种微型RNA.肌肉缩肌肉缩肌肉缩这种类型的麻症是sarcopenia.

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