通过抑制NOX4诱导的铁化,HOXD10减弱纤维化
Xin Li1, Tian-Kui Ma2, Pu Wang3
1Nephrology Department, Fourth Hospital of China Medical University, Shenyang, China.
Cell death & disease
|June 6, 2024
概括
在慢性病 (CKD) 纤维化中,Homeobox D10 (HOXD10) 的下调. 在小鼠和细胞中恢复HOXD10水平,通过抑制氧化应激和铁,减少纤维化,这表明了新的治疗点.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 纤维化是慢性病 (CKD) 的常见并发症,但其潜在机制仍然不完全理解.
- 主页obox D10 (HOXD10) 已成为纤维性疾病的潜在因素.
- 在已建立的CKD相关纤维化模型中,HOXD10表达减少.
研究的目的:
- 为了研究Homeobox D10 (HOXD10) 在慢性病 (CKD) 相关纤维化病的发病过程中的作用.
- 探索HOXD10作为缓解CKD纤维化的治疗标的潜力.
主要方法:
- 利用单边尿道阻塞 (UUO) 的小鼠模型和TGF-β1诱导的人类近接管状上皮细胞 (HK-2).
- 过度表达的HOXD10在体内使用腺相关病毒 (AAV) 和体内使用等离子体转染.
- 评估了氧化应激的标志物 (ROS,脂质ROS,GSSG/GSH比,MDA,SOD),铁和纤维化.
- 采用双硫酸盐测序PCR,染色体免疫沉 (ChIP) 和双露西法酶记者测试来确认分子相互作用.
主要成果:
- 在CKD纤维化实验室和体内实验室模型中,HOXD10表达显著下调.
- 在UUO小鼠中,HOXD10过度表达减弱了纤维化,改善了功能,减少了氧化应激和铁灭激活.
- 在HK-2细胞中,HOXD10取消了TGF-β1/erastin诱导的NOX4转录,ferroptosis和profibrotic基因表达.
- 在TGF-β1处理的细胞中,HOXD10被发现过甲基化,并直接与NOX4促进体结合.
结论:
- 在CKD中,HOXD10通过抑制NOX4转录,铁和氧化应激,对纤维化起着保护作用.
- HOXD10作为纤维化抑制剂,可能通过表观遗传调节和与NOX4.4直接促进体相互作用.
- 向HOXD10代表了治疗慢性病中的纤维化的一种有前途的新疗法策略.
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