由YBX1驱动的TUBB6上调,通过WNT3A-FZD8通路促进眼球血管生成
Ye-Ran Zhang1, Wei-Qi Li1, Zhong-Hong Zhang2
1Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China.
Theranostics
|March 14, 2025
概括
图布林β-6链 (TUBB6) 在病态眼神新血管化中被上调. 向TUBB6可能通过抑制发芽血管生成,为视力损害疾病提供新的治疗方法.
科学领域:
- 眼科医生 眼科 眼科
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 病理性眼球新血管化显著导致视力障碍.
- 图布林动力学对于眼睛的平衡,细胞增殖和血管生成至关重要.
- 了解眼球新血管化的分子驱动因素对于开发有效疗法至关重要.
研究的目的:
- 研究图林β-6链 (Tubb6) 在眼睛新血管化中的作用.
- 阐明Tubb6在血管生成中的功能背后的分子机制.
- 确定多发性眼病的潜在治疗点.
主要方法:
- 转录组分析 (scRNA-Seq,大量RNA-Seq) 在氧气诱导视网膜病变 (OIR) 和胆道新血管化 (CNV) 的小鼠模型中.
- 在体外测试 (Transwell迁移,伤口愈合,管形成) 和 TUBB6淘汰细胞的流动细胞计.
- 在体内评估Tubb6对视网膜血管生成和CNV的沉默效应.
- 使用RNA结合蛋白分析和WNT通路评估识别上游调节器和下游通路.
主要成果:
- 在OIR小鼠的视网膜和来自患有增殖性糖尿病视网膜病变 (PDR) 和神经血管年龄相关黄斑变性 (nAMD) 的患者的内皮细胞中,Tubb6表达被上调.
- 在体外,TUBB6 knockdown 降低了增殖和尖端细胞标记物,并在体内降低了血管发芽和 CNV 进展.
- 鉴定出YBX1是稳定TUBB6mRNA的上游调节器,YBX1-TUBB6-WNT3A/FZD8通路与生长血管生成有关.
结论:
- TUBB6在维持眼睛平衡和促进生长血管生成方面发挥着关键作用.
- YBX1-TUBB6-WNT3A/FZD8通路是眼睛新血管化的关键机制.
- 用特定的抑制剂向TUBB6为眼部微血管疾病提供了一个有前途的治疗策略.
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