P300促进RUNX1转录以调节自和驱动角膜新血管化
Yangyang Peng1, Qing Wang1, Jingjing Xu1
1Ophthalmic Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
Investigative ophthalmology & visual science
|August 27, 2025
概括
通过抑制自,与相关的转录因子1 (RUNX1) 和P300促进角膜新血管化 (CoNV). 沉默RUNX1激活了自,减少了CoNV的进展和内皮细胞的活动.
科学领域:
- 眼科 眼科
- 分子生物学
- 细胞生物学
背景情况:
- 角膜新血管化 (CoNV) 是一种涉及角膜新血管生长的病理过程.
- 了解 CoNV 的分子调节剂对于开发有效治疗至关重要.
- 有关Runt的转录因子1 (RUNX1) 已成为血管生成的潜在关键因素.
研究的目的:
- 研究RUNX1在角膜新血管化 (CoNV) 中的调节作用.
- 阐明潜在的分子机制,包括P300和自的参与.
主要方法:
- 在实验室中使用VEGF诱导的人类静脉内皮细胞 (HUVEC) 进行RUNX1/ P300操纵.
- 细胞增殖 (EdU),迁移 (Transwell) 和管道形成的测试.
- 染色体免疫沉 (ChIP) 和共免疫沉 (Co-IP) 来评估蛋白质相互作用.
- 使用RFP-GFP-LC3报告器进行自流量监测.
- 使用烧诱导的CoNV的老鼠模型进行体内验证.
主要成果:
- 在CoNV和VEGF诱导的HUVEC中,RUNX1和P300水平升高,与自抑制相关.
- P300直接与RUNX1促进体结合,增强RUNX1转录.
- RUNX1的过度表达抵消了P300沉默的抗血管效应.
- 通过激活自细胞,减弱了RUNX1的VEGF诱导的HUVEC增殖,迁移和管形成.
结论:
- 通过与其促进体结合,P300增强了RUNX1的转录.
- 通过调节与自相关的基因,RUNX1在 CoNV 的进展中起着至关重要的作用.
- 针对RUNX1-P300-自轴是一个潜在的治疗策略.
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