基于ITRAQ的胆管新血管化的蛋白质组学和TAB1在CNV中的保护作用
Yong Du1,2, Shaoqiu Jiang3, Lujia Feng1
1Shenzhen Eye Hospital, Shenzhen Eye Center, Southern Medical University, Futian District, 18 Zetian Road, Shenzhen, 518040, People's Republic of China.
Scientific reports
|August 23, 2025
概括
这项研究表明,TAB1蛋白在胆管新血管化 (CNV) 中起着保护作用,这是与年龄相关的黄斑变性 (AMD) 中的主要失明原因. 过度表达TAB1减少了中枢神经瘤病变并影响了炎症途径,这表明它是潜在的治疗点.
科学领域:
- 眼科 眼科
- 分子生物学
- 生物化学
背景情况:
- 状新血管化 (CNV) 是与年龄相关的黄斑变性 (AMD) 的严重并发症,通常导致视力丧失.
- 了解CNV背后的分子机制对于开发有效治疗至关重要.
研究的目的:
- 使用 iTRAQ 调查 CNV 中的蛋白质表达特征.
- 通过分析差异表达的蛋白质来确定CNV的潜在治疗点.
- 阐明TAB1在CNV的发病过程中的功能作用.
主要方法:
- 使用iTRAQ进行蛋白质组分析,以比较CNV和正常大鼠胆膜中的蛋白质表达.
- 差异表达蛋白质的生物信息分析 (KEGG和GO注释).
- 通过Western Blotting验证蛋白质表达.
- 使用AAV介导的TAB1过度表达来评估其对中枢神经瘤病变的影响的体内研究.
- 用ELISA测量IL-6和IL-18水平.
- 分析NF-kB通路的激活.
主要成果:
- 在CNV大鼠中,共发现了4 380种蛋白质,其中49种是上调的,241种是下调的.
- 在体内,TAB1的过度表达显著降低了中枢神经瘤病变的区域.
- 过度表达TAB1增加了RPE细胞增殖,增加了IL-6水平,降低了IL-18水平.
- NF- kB途径与TAB1的观察效应有关.
结论:
- TAB1 显示出对 CNV 进展的保护作用.
- TAB1影响关键的炎症细胞因子 (IL-6,IL-18) 和NF- kB通路.
- 在AMD治疗中,TAB1及其相关信号通路是有前途的治疗点.
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