半叶蛋白3f和视网膜前代的胚胎后调节
Amira Kalifa1, Carrie L Hehr1, Katelyn L Shewchuk1
1Department of Cell Biology and Anatomy, Hotchkiss Brain Institute, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada.
PLoS genetics
|July 14, 2025
概括
在斑马鱼中,semaphorin3fa (Sema3fa) 对视网膜原生细胞组织至关重要. 失去Sema3fa会破坏原始细胞的排列,影响眼睛的发育和新的视网膜电路的产生.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
背景情况:
- 神经原始体为神经系统电路产生各种各样的细胞类型.
- 一个利基内的原始细胞位置会影响暴露于外部信号和随后的细胞命运.
- 调节内的祖先位置的信号在很大程度上是未知的.
研究的目的:
- 调查Sema3fa (Sema3fa) 在斑马鱼视网膜纤维边缘区域 (CMZ) 内调节原生物排列中的作用.
- 了解Sema3fa如何影响祖先行为和视网膜细胞生成.
主要方法:
- 使用一个CRISPR/Cas9生成的sema3fa突变斑马鱼模型 (sema3faca304).
- 在CMZ原始体中分析了Sema3受体 (nrp2a,nrp2b,plxna1) 的基因表达.
- 在野生类型和突变鱼中评估了眼睛大小,祖先细胞周期,空间组织和视网膜细胞类型的比例.
主要成果:
- 失去Sema3fa导致幼斑马鱼的眼睛大小减少.
- 塞马3fa 缺乏破坏了幼虫原生细胞周期参数和空间组织.
- 截然不同的视网膜细胞类型的产生在比例和数量上发生了变化.
结论:
- 在CMZ中,semaphorin3fa对于视网膜祖先的有序排列至关重要.
- 塞马3fa 可能通过调节原生粘合相互作用来起作用,从而促进利基的进展.
- 由Sema3fa调节的正确的祖先定位确保了对视网膜电路发育的正确外部信号接收.
更多相关视频
09:04Analysis of Retinoic Acid-induced Neural Differentiation of Mouse Embryonic Stem Cells in Two and Three-dimensional Embryoid Bodies
Published on: April 22, 2017
9.1K
07:46Author Spotlight: Advancing Vision Restoration - Stem Cell-Based Therapy for Retinal Diseases
Published on: October 6, 2023
1.1K
相关概念视频
01:24Regulation of Angiogenesis and Blood Supply
2.7K
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...
2.7K
01:22Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.3K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.3K