在成长中的老鼠嗅觉和鼻上皮表达中,普罗萨波辛/若素的表达
Kai Kitamura1, Kyoko Saito2, Takeshi Homma1
1Laboratory of Veterinary Anatomy, Joint Graduate School of Veterinary Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
Journal of developmental biology
|November 25, 2024
概括
普罗萨波辛在成长中的老鼠嗅觉器官中得到表达. 它从出生时就存在于成熟的嗅觉受体神经元和不成熟的口腔鼻受体神经元中,这表明它在嗅觉和口腔鼻发育中发挥着不同的作用.
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
- 分子生物学分子生物学
背景情况:
- 普罗萨素是一种甘氨酸蛋白质,可以作为沙素的前体或作为神经营养因子.
- 嗅觉神经上皮质 (OE和VNE) 呈现终身神经发生,成熟的神经元表达prosaposin.
- 在嗅觉系统的发展过程中,普罗萨波辛的作用尚未完全被理解.
研究的目的:
- 为了研究大鼠在产后发育期间的嗅觉器官中的普罗萨波辛的表达模式.
- 为了确定在发育过程中,嗅觉上皮质 (OE) 和口鼻上皮质 (VNE) 之间是否存在普罗萨素表达的差异.
- 探索普罗萨波辛在嗅觉和鼻受体神经元发育中的潜在作用.
主要方法:
- 免疫组织化学被用来检测大鼠嗅觉器官中的普罗萨素表达.
- 嗅觉标记蛋白 (OMP) 用于识别成熟的嗅觉受体神经元 (ORN) 和口鼻受体神经元 (VRN).
- 从出生后的0天 (P0) 到出生后的20天 (P20) 检查了普罗萨波辛和OMP的表达.
主要成果:
- 在OE中,从P0.0开始的成熟ORN (OMP阳性) 中检测到prosaposin免疫反应.
- 在OE中未成熟的ORN在研究期间没有表现出prosaposin免疫反活性.
- 在VNE中,从P0的VRNs中观察到prosaposin免疫反活性,包括不成熟的VRNs,而成熟的VRNs显示了从P20的成年人样分布.
结论:
- 普罗萨波辛在老鼠发育的嗅觉系统的成熟和不成熟神经元中表达,但在OE和VNE中具有不同的模式.
- 这些发现表明,普罗萨波辛在OE和VNE的发展中可能起着不同的作用.
- 需要进一步的研究来阐明前素在嗅觉和鼻器官发育中的特定功能.
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