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由BMDM衍生出的ORP8通过缓解MASH小鼠内 плазма网膜应激减轻脂毒性和炎症,从而抑制脂毒性和炎症

Yi Chen^1,2, Kangjie Xie³, Caiyang Chen^1,2

¹Department of Anesthesiology, Renji Hospital, Jiaotong University School of Medicine, No. 160, Pujian Road, Pudong New District, Shanghai, 200217, China.

Molecular medicine (Cambridge, Mass.)

|May 30, 2025

概括

抗炎性巨细胞衍生的细胞外囊泡 (EVs) 显示了对代谢功能障碍相关的脂肪肝炎 (MASH) 的治疗潜力. 这些含有Osbpl8的EV通过调节ER压力来降低肝炎和脂毒性,为MASH提供了一种新的治疗策略.

科学领域:

肝病学和免疫学肝病学和免疫学
细胞和分子生物学细胞和分子生物学

背景情况:

代谢功能障碍相关的脂肪肝炎 (MASH) 是一种普遍存在的肝脏疾病,治疗选择有限.
肝炎炎症是MASH进展的关键驱动因素.
抗炎性巨细胞在维持免疫平衡中发挥着重要作用.

研究的目的:

为了阐明抗炎性巨细胞在MASH中的作用.
研究这些巨细胞影响MASH进展的潜在分子机制.

主要方法:

从抗炎性骨髓衍生巨细胞 (BMDMs) 中分离和表征细胞外囊泡 (EVs).
在体外研究中,使用EVs或Osbpl8shRNA治疗的棕酸刺激肝细胞.
在C57BL/6小鼠的体内MASH模型中,接受了EV或shRNA编码的AAV治疗.

主要成果:

来自抗炎性BMDM的EV抑制了MASH模型中的炎症反应并减轻了脂毒性.
Osbpl8被确定为这些EV的关键组成部分,通过减少ER压力来重塑脂质代谢.
富含Osbpl8的EV显示出抗炎和抗脂毒作用,表明其具有治疗潜力.

结论:

抗炎性BMDMs分泌的EVs中的Osbpl8对于MASH的细胞间通信至关重要.
这项研究揭示了MASH.中巨细胞平衡调节的新机制.
富含Osbpl8的EV为MASH治疗提供了一个有前途的治疗点.

关键词:

来自骨髓的巨细胞.细胞内膜网膜应激压力细胞外囊泡中的细胞外囊泡.脂肪毒性脂肪毒性与代谢功能障碍相关的脂肪肝炎.

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