在玻璃眼病理学中,FOXC2在椎网格和施莱姆通道中的不同作用
Naoto Ujiie1, Pieter R Norden1, Raymond Fang2
1Feinberg Cardiovascular and Renal Research Institute, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Life science alliance
|July 6, 2023
概括
叉头盒C2 (Foxc2) 对施莱姆的运河发展和身份至关重要. 它在神经细胞中被删除会损害眼睛的发育,导致眼内压力升高和变化的状网状生物力学.
科学领域:
- 眼科医生 眼科 眼科
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 施莱姆运河 (SC) 的发展和维护对于调节眼内压力 (IOP) 至关重要.
- 血管新生素 (ANGPT) /TIE2信号通路与SC调节有关.
- 在SC和神经 (NC) 由神经 (TM) 衍生出的状网 (TM) 之间的分子交叉是不清楚的.
研究的目的:
- 研究分叉箱C2 (Foxc2) 在SC发育和TM-SC交叉声中的作用.
- 阐明与TM生物力学相关的SC功能障碍背后的分子机制.
主要方法:
- 使用NC特异性和内皮特异性Foxc2删除小鼠模型.
- 使用可见光光学连贯性断层扫描 (OCT) 进行功能性SC评估.
- 进行单细胞RNA测序 (scRNA-seq) 来分析TM细胞的转录变化.
- 研究了VE-PTP删除对SC形态发生的影响.
主要成果:
- 特定于NC的Foxc2删除导致SC形态发生障碍,SC认同丧失和IOP升高.
- 对OCT的分析显示了功能性SC损伤,并建议在NC-Foxc2突变小鼠中改变TM生物力学.
- scRNA-seq在TM细胞中发现了与细胞外基质组织和度相关的显著的转录性变化,包括基质金属蛋白酶表达的增加.
- 内皮特异性Foxc2删除因TIE2表达减少而导致SC形态变异受损,VE-PTP删除可以改善这种情况.
结论:
- Foxc2对于维持SC的身份和适当的形态发生是必不可少的.
- Foxc2通过TM-SC交叉声调节SC发育和功能,影响TM生物力学.
- 在TM中,ANGPT/TIE2通路和细胞外矩阵重塑是Foxc2在SC维护中的关键下游影响者.
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