相关实验视频

Updated: Sep 12, 2025

Author Spotlight: Unraveling the Molecular Mechanisms in PCO and Fibrosis Following Cataract Surgery

Author Spotlight: Unraveling the Molecular Mechanisms in PCO and Fibrosis Following Cataract Surgery

Published on: December 1, 2023

C1q通过维持基底β-catenin依赖信号和血视网膜屏障功能来限制囊 edem

Lingling Zhang^1,2, Jacklyn Levey^1,3, Md Abedin¹

¹Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, MN, USA.

bioRxiv : the preprint server for biology

|August 8, 2025

概括

这项研究表明,C1QA有助于维持血视网膜屏障,而其缺失会使视力问题恶化. 增强诺林/Frizzled4信号传递有效地解决囊泡胀,突出其对黄斑胀的治疗潜力.

科学领域:

眼科医生眼科眼科
神经科学是一个神经科学.
免疫学免疫学免疫学

背景情况:

黄斑 (ME) 导致视力丧失,并与血液视网膜屏障 (BRB) 功能障碍有关.
经典补充通路在BRB功能障碍中的作用仍然不清楚.

研究的目的:

研究C1QA在BRB维持中的作用及其对ME的影响.
描述一种新的小鼠模型 (Tspan12 KO^DBM) 用于研究囊 edem.
探索诺林/Frizzled4信号在ME中的治疗潜力.

主要方法:

使用Tspan12 KO^DBM小鼠,C1qa KO小鼠和复合突变物进行衰老研究.
评估了BRB功能,囊 edem,电网膜学 (ERG) 和微质激活.
采用基于细胞的实验和FZD4/LRP5激素抗体.

主要成果:

在Tspan12 KO^DBM小鼠中,C1QA缺失加剧了BRB功能障碍,和神经炎症.
通过FZD4 / LRP5主动剂激活β-catenin依赖的信号传递解决了囊性胀.
诺林/Frizzled4信号调制会影响囊腺 edem 的水平.

结论:

C1QA对于基底BRB维护至关重要.
诺林/Frizzled4信号传输是ME的一种有前途的治疗标.
这项研究为C1QA在BRB完整性中的作用提供了新的见解.

更多相关视频

Endothelial Cell Transcytosis Assay as an In Vitro Model to Evaluate Inner Blood-Retinal Barrier Permeability

Endothelial Cell Transcytosis Assay as an In Vitro Model to Evaluate Inner Blood-Retinal Barrier Permeability

Published on: June 7, 2022

An Acute Retinal Model for Evaluating Blood Retinal Barrier Breach and Potential Drugs for Treatment

An Acute Retinal Model for Evaluating Blood Retinal Barrier Breach and Potential Drugs for Treatment

Published on: September 13, 2016

相关概念视频

Catenins

Catenins

Catenins are characterized by multiple binding domains and dynamic structures that allow them to function as linker proteins in cell junction complexes. All catenins, except α-catenin, contain a characteristic protein sequence called the armadillo repeat and are therefore also called armadillo proteins.
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the...

Microtubules in Signaling

Microtubules in Signaling

The primary cilium, made up of microtubules, acts as antennae on the cell surfaces for relaying external stimuli into the cells. These fine hair-like structures are present, generally one per cell. These are non-motile cilia in a 9+0 microtubules arrangement, where the central pair of microtubules are absent. The primary cilia arise from the basal body embedded in the cell membrane. Intraflagellar transport (IFT) carries requisite proteins from the cytoplasm to the cilium because the primary...

Regulation of Angiogenesis and Blood Supply

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...