病毒和细胞特异性HMGB1分泌和亚皮质入形成在腺病毒角膜炎
bioRxiv : the preprint server for biology
|January 20, 2025
概括
人类腺病毒D (HAdV-D) 通过从受感染的角膜细胞分泌HMGB1引起流行性角膜结膜炎 (EKC). 这种蛋白质驱动白细胞透,解释了EKC中的角膜亚皮质透 (SEI).
科学领域:
- 眼科医生 眼科 眼科
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 流行性角膜结膜炎 (EKC),由人类腺病毒物种D (HAdV-D) 引起,其特点是角膜亚皮质透 (SEI).
- 在EKC中SEI形成的确切机制尚不清楚.
- 高流动性组盒1蛋白 (HMGB1) 是一种与感染和败血症相关的炎症警报蛋白.
研究的目的:
- 阐明HMGB1在HAdV-D感染期间角膜SEI的发病过程中的作用.
- 确定HAdV-D诱导SEI形成的具体机制.
主要方法:
- 研究了HAdV-D感染的人类角膜上皮细胞的HMGB1分泌物.
- 利用细胞特异性感染模型和一种新的3D角膜培养系统.
- 研究了CRM1和LAMP1在HMGB1转移中的作用.
- 评估了HMGB1对初级 stromal 细胞和随后的化学激素表达的影响.
主要成果:
- HAdV-D感染特别诱导人类角膜上皮细胞的HMGB1分泌,而不是其他细胞类型.
- HMGB1的分泌取决于乙化,并受到CRM1和LAMP1.1的严格调节.
- 细胞外HMGB1刺激角膜侧膜细胞释放促炎性化学激素.
- 在3D角膜模型中,释放的HMGB1诱导白细胞透,解释了SEI的形成.
结论:
- HAdV-D采用一种特定的机制,涉及角膜上皮细胞的HMGB1分泌,以驱动EKC中的SEI形成.
- HMGB1作为一个关键的调解者,直接和间接地,在吸引白细胞到角膜.
- 这项研究为分子层面的EKC病变产生提供了新的理解.
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