在低氧条件下,TGF-β/LAMB3轴驱动ROS依赖性纤维化
Zhibin Wu1, Zheng Kuang1, Lixia Liang2
1Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, 510515, China.
Free radical biology & medicine
|December 18, 2025
概括
低氧驱动纤维化通过过度反应性氧物种 (ROS). 抗氧化剂N-乙半氨酸 (NAC) 和向LAMB3蛋白在治疗纤维脏疾病方面表现有前途.
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
- 病理学 病理学 病理学
背景情况:
- 缺氧是已知的纤维化的原因,但其机制尚未完全理解.
- 反应性氧物种 (ROS) 与病进展有关.
- 在缺氧纤维化中LAMB3的作用需要进一步阐明.
研究的目的:
- 研究ROS在缺氧诱导的纤维化中的作用.
- 在纤维化背景下探索TGF-β/LAMB3信号轴.
- 评估ROS清除和LAMB3抑制的治疗潜力.
主要方法:
- 使用集成的ATAC-seq和RNA-seq分析.
- 采用了低氧纤维化病的小鼠模型.
- 研究了N-乙半氨酸 (NAC) 和脏向的LAMB3中断的影响.
主要成果:
- 在管状上皮细胞中,缺氧诱导的ROS促进了部分上皮-介质细胞过渡 (pEMT) 和TGF-β分泌.
- 在纤维细胞中,TGF-β通过增强的染色质可访问性来提高LAMB3的调节.
- 抑制LAMB3可以缓解缺氧引起的纤维化,而NAC治疗会破坏TGF-β/LAMB3轴.
结论:
- 在低氧条件下,TGF-β/LAMB3轴驱动ROS依赖性纤维化.
- 确定LAMB3和ROS是纤维脏疾病的潜在治疗标.
- 向ROS和LAMB3为纤维化提供了一个有前途的治疗策略.
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