黑色素缓解由阿特拉诱导的肺纤维化,向肺毛细血管微环境
Wei-Hong Lu1, Xin Yao1, Wen-Ting Qiao1
1College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China.
Journal of agricultural and food chemistry
|August 6, 2025
概括
亚特拉辛除草剂通过改变内皮细胞并促进纤维化而导致肺损伤. 黑色素 (MLT) 通过恢复自和抑制驱动炎症和细胞死亡的途径来保护肺部.
科学领域:
- 环境毒理学环境毒理学
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
背景情况:
- 广泛使用的除草剂阿特拉 (ATZ) 污染了水源,造成潜在的肺部健康风险.
- 肺毛细血管内皮细胞 (PCECs) 对饮用水中发现的毒素敏感.
- 一种天然的荷尔蒙 - - 黑激素 (MLT) 已显示出缓解肺部疾病的潜力.
研究的目的:
- 建立一个小鼠模型来研究通过饮用水接触ATZ对肺部的影响.
- 评估MLT对ATZ诱导的肺损伤的保护作用.
- 阐明ATZ毒性和MLT治疗作用背后的分子机制.
主要方法:
- 开发一种用于ATZ暴露和MLT治疗的小鼠模型.
- 分析PCECs的变化,Notch配体Jag1的表达,以及β-catenin通路的激活.
- 通过Notch1信号来评估M2巨的招募和激活.
- 在肺组织中评估纤维化标志物,自水平和亡.
主要成果:
- 暴露于ATZ诱导肺损伤,主要影响PCEC和通过β-catenin通路调节Jag1.
- 治疗ATZ导致招募Notch1-表达M2巨细胞,促进肺纤维化.
- 给予MLT减轻了肺损伤,减少了原沉积,并恢复了自.
- MLT抑制了Wnt1/β-catenin通路,降低了Jag1表达和M2巨细胞激活,并减轻了和亡.
结论:
- 由ATZ诱导的肺损伤是由PCECs的改变,Jag1上调和M2巨细胞两极分化介导的.
- 通过恢复自和抑制Wnt1/β-catenin/Jag1轴,MLT证明了ATZ诱导的肺损伤的治疗潜力.
- MLT有效地阻断了Jag1介导的巨细胞表型切换,为除草剂诱导的肺损伤提供了一种新的治疗策略.
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