维生素D受体信号的早期干扰会导致斑马鱼幼虫持续的发育行为缺陷
bioRxiv : the preprint server for biology
|April 16, 2025
概括
在斑马鱼早期发育中破坏维生素D受体 (VDR) 信号传递会损害感官处理和神经行为. 这些VDR中断导致持久的视觉和声学感官运动缺陷,影响神经行为健康.
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
- 内分泌学 在内分泌学.
背景情况:
- 感官处理和行为对于神经系统的功能至关重要.
- 这些区域的缺陷与自闭症和精神分裂症等神经精神疾病有关.
- 环境因素可能在感官处理障碍中起作用.
研究的目的:
- 研究维生素D受体 (VDR) 在早期发育过程中对感官处理和神经行为结果的信号传递的作用.
- 检查维生素D的非血性神经发育作用.
主要方法:
- 使用了一种转基因斑马鱼系,具有条件主导负VDR (dnVDR).
- 在受精后24-72小时 (hpf) 间的VDR信号中断.
- 在受精后6天和28天评估感觉运动行为 (视觉运动反应,声响应,脉冲前抑制).
主要成果:
- dnVDR斑马鱼在视觉运动反应中表现出缺陷,包括活动减少和低运动.
- 声学惊慌响应在6dpf时显示了长延迟C曲线 (LLC) 的显著减弱.
- 脉冲前抑制 (PPI) 在28dpf下受损,表明VDR对震惊响应调制的持续信号效应.
结论:
- 在关键发育窗口期间对VDR信号的调制不可逆转地破坏了传感处理神经电路.
- 这些干扰对神经行为健康结果有潜在的影响.
- 维生素D信号传递对于正常的神经发育和感官处理至关重要.
相关概念视频
Notch Signaling Pathway
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Hedgehog Signaling Pathway
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...


