相关实验视频
Updated: Sep 12, 2025

11:22
Vibratome Sectioning Mouse Retina to Prepare Photoreceptor Cultures
Published on: December 22, 2014
17.9K
在小鼠中,RORα的遗传损失损害了视觉功能与棒双极细胞退化.
Kiran Bora1, Chi-Hsiu Liu1, Neetu Kushwah1
1Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, United States.
Investigative ophthalmology & visual science
|August 8, 2025
概括
与视网酸受体相关的孤儿受体α (RORα) 缺陷通过破坏棒双极细胞损害小鼠视力. 这突显了RORα在维持视网膜结构和功能的关键作用,这表明它是视力丧失的治疗点.
科学领域:
- 眼科和视觉神经科学的眼科和视觉神经科学.
- 分子和细胞生物学分子和细胞生物学
- 遗传学和发育生物学
背景情况:
- 与视网酸受体相关的孤儿受体α (RORα) 是对眼睛发育至关重要的核受体.
- RORα的遗传变异与与年龄相关的黄斑变性有关,但其在视觉功能中的直接作用仍然不清楚.
研究的目的:
- 研究RORα在调节视觉功能的作用.
- 研究RORα缺乏对小鼠视网膜结构和基因表达的影响.
主要方法:
- 视觉功能的评估是使用电网膜学 (ERG) 在RORα缺乏 (Rorasg/sg) 的小鼠和野生类型的对照.
- 分析了RORα的视网膜局部,棒双极细胞形态,视网膜厚度,化和视觉转导基因表达.
主要成果:
- RORα缺乏症显著损害视觉功能,由降低ERG b波幅证明,表明双极细胞功能障碍.
- 罗拉斯格/斯格小鼠表现出棒双极细胞的退化,视网膜结晶症和视网膜稀薄,随着年龄的增长而恶化.
- 光传导和双极细胞脱极化基因的升级表明了补偿信号重塑.
结论:
- RORα对于棒双极细胞的结构和功能完整性至关重要.
- 缺少RORα会导致视网膜逐渐退化和视力受损.
- RORα代表了一种潜在的治疗点,用于双极细胞缺陷的视网膜退行性疾病.
相关概念视频
The Retinoblastoma Gene
4.2K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
4.2K
Photoreceptors and Visual Pathways
6.5K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.5K

