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血氧酶1通过抑制肝脏铁亡来缓解非酒精性脂肪肝炎

Xiwei Yuan¹, Lu Li¹, Ying Zhang¹

¹Department of Traditional and Western Medical Hepatology, Hebei Provincial Key Laboratory of liver fibrosis in chronic liver diseases, Third Hospital of Hebei Medical University, Shijiazhuang, 050051, Hebei, China.

Lipids in health and disease

|July 8, 2023

概括

血氧酶1 (HO-1) 通过调节铁亡来缓解非酒精性脂肪肝炎 (NASH). 这项研究研究了HO-1在NASH铁亡中的机制,发现它可以防止疾病的进展.

科学领域:

细胞生物学细胞生物学
生物化学生物化学
病理学病理学病理学

背景情况:

血液氧化酶1 (HO-1) 在铁亡中发挥作用,这是一种涉及非酒精性脂肪肝炎 (NASH) 的细胞死亡形式.
连接HO-1和NASH铁亡的精确机制在很大程度上仍未被探索.
这项研究研究了HO-1在NASH铁亡中的作用和机制.

研究的目的:

阐明血红素氧酶1 (HO-1) 影响非酒精性脂肪肝炎 (NASH) 中铁亡的机制.
确定HO-1在NASH进展中的作用.
为了验证动物模型和人类NASH肝脏样本中的发现.

主要方法:

肝细胞特异性HO-1淘汰赛小鼠 (HO-1^HEPKO) 和野生型小鼠被食高脂肪饮食 (HFD).
在体外研究中使用AML12和HepG2细胞来研究HO-1对铁亡标记物的影响.
从NASH患者的肝脏部分进行了分析,以进行组织病理学验证.

主要成果:

高脂肪饮食 (HFD) 在HO-1HEPKO小鼠中加剧了肝硬化,炎症,纤维化和脂质过氧化.
在实验室中,HO-1 knockdown增加了活性氧物种,脂质过氧化和铁过载,同时降低了GSH和SOD水平.
NF-κB信号通路被确定为NASH铁亡的关键调解者,与人类患者数据一致.

结论:

血氧酶1 (HO-1) 通过减轻铁亡,在非酒精性脂肪肝炎 (NASH) 中发挥了保护作用.
通过调节铁亡途径,HO-1可以缓解NASH的进展.
这些发现突出了HO-1作为NASH的潜在治疗点.

关键词:

铁性化 (ferroptosis) 是一种血红蛋白氧化酶-1的使用.脂质过氧化过氧化非酒精性脂肪肝炎的原因铁的代谢铁的代谢

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