ACSS2通过调节肝素表达来防止酒精诱导的肝细胞铁
Mengyao Wang1,2, Xiao Wen3, Zian Feng1
1Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
Nature communications
|July 2, 2025
概括
酒精代谢通过降低ACSS2的调节来破坏肝脏健康,导致乙酸的积累. 这会触发铁失调和铁,通过表观遗传变化推动酒精性肝病 (ALD) 的进展.
科学领域:
- 生物化学 生物化学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 肝病学 肝病学是一种肝病学.
背景情况:
- 酒精的新陈代谢产生乙酸盐,乙-CoA合成酶短链家族成员2 (ACSS2) 的基质.
- ACSS2将新陈代谢和表观遗传调节联系在一起,但其在酒精性肝病 (ALD) 中的作用尚不清楚.
研究的目的:
- 为了研究ACSS2介导的表观遗传控制在酒精性肝病中的功能.
- 阐明ACSS2影响ALD肝损伤和炎症的机制.
主要方法:
- 研究了酒精对小鼠肝脏ACSS2表达和酸盐水平的影响.
- 研究了ACSS2,CREB结合蛋白 (CBP) 和基因素乙化之间的相互作用.
- 评估了ACSS2缺乏对铁代谢,铁亡和肝损伤的影响.
- 利用铁化剂和铁灭抑制剂来评估治疗潜力.
主要成果:
- 酒精消费降低了肝脏ACSS2的调节,增加了酸盐的积累,并破坏了铁的新陈代谢.
- ACSS2 缺乏导致肝素抗微生物1/2 (HAMP1/2) 转录的降低,导致系统性铁体平衡和铁.
- 在ACSS2缺乏的小鼠中,恢复HAMP1/2或使用铁合剂/铁灭抑制剂减弱了酒精诱导的肝损伤.
结论:
- 通过肝脏的表观遗传机制,ACSS2在调节铁代谢和铁中发挥着至关重要的作用.
- 降低ACSS2的调节有助于ALD的发病因子,通过促进铁的消化和铁.
- 针对ACSS2介导的表观遗传通路为ALD提供了潜在的治疗策略.
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