叉转录因子Foxj1控制脊椎动物的嗅觉乳毛生物发生和感觉神经元分化
Dheeraj Rayamajhi1, Mert Ege2, Kirill Ukhanov3
1Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore.
PLoS biology
|January 25, 2024
概括
转录因子Foxj1对于嗅觉感官神经元 (OSN) 的发育和不运动的嗅觉的形成至关重要. 这项研究揭示了Foxj1的存在.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 遗传学 遗传学 是一个
背景情况:
- 嗅觉受体位于嗅觉感官神经元 (OSN) 的眼上.
- 这些毛的功能障碍可能导致厌氧症,但对嗅觉毛分化的转录调节的理解不足.
- 嗅觉乳毛是不动的,与身体其他部位的运动乳毛不同.
研究的目的:
- 研究脊椎动物嗅觉分化的转录编程.
- 确定转录因子Foxj1在嗅觉感官神经元和嗅觉乳毛发育中的作用.
- 了解法典的Foxj1-介导的转录程序是如何适应嗅觉的.
主要方法:
- 斑马鱼,小鼠和人类嗅觉感官神经元中的基因表达分析.
- 使用foxj1突变斑马鱼的功能研究.
- 嗅觉感官神经元分化和嗅觉乳毛生物发生的评估.
主要成果:
- Foxj1在嗅觉感官神经元中表达,对斑马鱼和小鼠的嗅觉上皮形成至关重要.
- 与纤毛运动相关的基因在嗅觉感官神经元中被抑制.
- Foxj1不仅调节纤维生成,还调节嗅觉感官神经元的分化,包括嗅觉标记蛋白 (omp) 的表达.
- 斑马鱼的Foxj1缺乏导致对胆汁酸的反应减弱,臭味被OMP阳性OSNs检测到.
结论:
- 转录因子Foxj1在嗅觉感官神经元发育中起着双重作用,控制着毛生物发生和神经元分化.
- 这项研究证明了Foxj1介导的转录程序的重新利用,用于不运动的嗅觉的发展.
- 这些发现提供了关于嗅觉感官神经元发育和功能背后的分子机制的关键见解.
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