糖原合成酶激酶3活性增强MASH中的肝炎
Mireille Khoury1, Qianqian Guo1, Kunimaro Furuta1,2
1Division of Gastroenterology & Hepatology, Mayo Clinic, Rochester, MN, USA.
JHEP reports : innovation in hepatology
|June 17, 2024
概括
糖原合成酶激酶3β (GSK3β) 在代谢功能障碍相关的脂肪肝炎 (MASH) 中驱动肝炎. 抑制GSK3β可降低肝损伤和炎症,为MASH患者提供潜在的治疗策略.
科学领域:
- 肝病学和血管生物学
- 肝脏疾病的分子机制
- 开发用于炎症疾病的药物.
背景情况:
- 代谢功能障碍相关的脂肪肝炎 (MASH) 涉及有毒脂质,肝脏脂肪积累和炎症.
- 单细胞的粘附和通过肝脏侧侧内皮细胞 (LSECs) 的迁移是关键的炎症事件.
- 在脂毒性压力下,LSECs会发展出一种促炎性内皮质病,但其介质是未知的.
研究的目的:
- 在MASH中识别LSEC内皮质病变的调解者.
- 调查糖原合成酶激酶3β (GSK3β) 在MASH病变发生中的作用.
- 在MASH模型中评估GSK3抑制剂的治疗潜力.
主要方法:
- 主要小鼠LSEC的多omics (蛋白质组,转录组,蛋白质组) 分析.
- 从食MASH诱导饮食 (FFC,CDHFD) 的小鼠中分析LSEC.
- 用GSK3抑制剂 (LY2090314,elraglusib) 对MASH模型的治疗和肝脏病理和免疫细胞透的评估.
主要成果:
- 综合途径分析揭示了白细胞透内皮移动 (TEM) 和焦点粘附作为MASH.的改变途径.
- 基因组分析确定GSK3β是MASH中的中央酶枢纽,在人类MASH LSEC中活性增加.
- 在MASH模型中,GSK3抑制减少了单细胞粘附和TEM,改善了肝炎,损伤和纤维化,并减少了亲炎性髓状细胞透.
结论:
- 在MASH中,GSK3β是脂毒性诱导的LSEC内皮质病变的关键媒介.
- 在临床前的MASH模型中,对GSK3β的药理抑制有效降低了肝炎和肝损伤.
- 抑制GSK3代表了人类MASH的一个有前途的治疗策略.
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