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蓝光通过激活NLRP3炎症体路径诱导角膜上皮损伤
Jiayun Ge1, Qianjie Yang2, Xin Yu1
1Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
Ecotoxicology and environmental safety
|August 24, 2025
概括
来自数字设备的蓝光会通过激活NLRP3炎症酶来损害角膜,从而导致氧化应激和炎症. 抑制NLRP3 (含NACHT,LRR和PYD域3) 保护角膜健康并加速愈合.
科学领域:
- 眼科 眼科
- 细胞生物学
- 免疫学
背景情况:
- 数字设备发出蓝光 (BL),通过氧化应激和炎症对角膜健康构成风险.
- 在BL引起的角膜损伤中,含有NACHT,LRR和PYD域3 (NLRP3) 炎症的作用需要阐明.
研究的目的:
- 研究蓝光诱导的角膜上皮损伤中的NLRP3炎症体的功能.
- 探索NLRP3抑制的治疗潜力,以减轻与蓝光相关的眼睛表面疾病.
主要方法:
- 使用暴露于连续BL的小鼠进行体内研究,评估角膜伤口愈合,膜稳定性和上皮缺陷.
- 在BL暴露下评估人角膜上皮细胞 (HCEC) 的体外研究.
- 生物信息分析以确定关键介质,然后在体外和体内使用MCC950 (NLRP3抑制剂).
主要成果:
- 在小鼠中,持续的BL暴露延迟了角膜伤口愈合,减少了膜分解时间,并恶化了上皮缺陷.
- 在时间和强度上,BL损害了HCEC的迁移和生存能力.
- 在小鼠角膜和HCEC中,BL上调NLRP3炎症组分 (NLRP3,ASC,Caspase-1,IL-1β,IL-18). 在小鼠中,MCC950治疗减轻了BL诱导的细胞死亡,氧化应激,并恢复了HCEC功能,加速了伤口愈合.
结论:
- NLRP3炎症酶是蓝光诱导的角膜上皮损伤的关键媒介.
- 对NLRP3的药理抑制显示出治疗蓝光相关的眼睛表面疾病的潜力.
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