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蓝光通过ITGB4促进结膜上皮质-介质细胞过渡和原沉积

Qianjie Yang¹, Kuangqi Chen², Siyi Chen³

¹Ningbo Eye Institute, Ningbo Eye Hospital, Wenzhou Medical University, Ningbo, Zhejiang Province, China.

Ecotoxicology and environmental safety

|December 28, 2024

概括

来自LED的蓝光 (BL) 暴露可能会损害眼睛的健康. 这项研究发现,BL在结膜上升调节ITGB4,促进细胞迁移和上皮-介质细胞过渡 (EMT),表明眼睛损伤的生物标志物.

科学领域:

眼睛表面科学眼睛表面科学
分子生物学分子生物学
细胞毒理学细胞毒理学

背景情况:

越来越多的LED技术导致蓝光 (BL) 暴露的增加.
人们担心BL对眼睛健康的长期影响,特别是结膜组织.

研究的目的:

调查结膜对BL暴露的转录组反应.
确定BL诱导的结膜损伤的潜在生物标志物.
阐明BL对结节细胞的影响背后的分子机制.

主要方法:

建立了BL暴露的体外 (人结膜上皮细胞) 和体内 (C57BL/6小鼠) 模型.
利用RNA测序进行转录组分析,以识别小鼠结膜中的响应基因.
采用西式涂抹,伤口愈合试验,穿孔试验和化丁染色来评估表皮-介质细胞转变 (EMT) 现型.

主要成果:

BL暴露破坏了结膜细胞的细胞连接,并调节了结膜细胞中的EMT相关蛋白质.
RNA测序揭示了整合蛋白β4 (ITGB4) 的显著上调以及细胞迁移和粘附通路的丰富.
由BL上调的ITGB4诱导的反应性氧物种 (ROS) 介导的损伤,通过细胞外信号调节激酶 (ERK) /Snail通路促进细胞迁移和EMT.

结论:

蓝光暴露会诱导结膜的转录基因变化,ITGB4被确定为一个关键的上调基因.
BL诱导的ITGB4上调促进结膜细胞迁移和EMT,可能导致眼睛表面损伤.
ITGB4可以作为一个有价值的生物标志物来评估BL诱导的结膜损伤和相关的分子通路.

关键词:

在EMT中,EMT是EMT.在ITGB4中使用.蓝光是蓝光中的一种.结膜上皮的结膜上皮.移民移民迁移迁移

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