在Septin5缺乏的小鼠中,新性依赖海马体行为标记的损伤
Natsumi Ageta-Ishihara1,2, Naoto Fukumasu3, Kazuki Fujii4,5
1Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan. natsumi.ageta-ishihara@sci.toho-u.ac.jp.
Septin-5蛋白对基本的空间和物体识别记忆不必. 然而,它通过新奇的暴露在稳定记忆方面发挥着至关重要的作用,这表明它在突触标记中发挥了作用.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 一种与GTP结合的蛋白质septin-5与突触囊泡外细胞和与22q11.2删除相关的神经精神疾病有关.
- 之前的研究表明,septin-5缺乏会影响情境恐惧记忆,但不会影响恐惧记忆或海马脊柱结构.
研究的目的:
- 研究septin-5在海马体依赖的空间和物体识别记忆中的作用.
- 为了确定 Septin-5 是否需要用于基线记忆形成或用于新奇性依赖的记忆稳定.
主要方法:
- 在一系列行为测试中使用了先天性septin5-缺乏 (septin5-/-) 的小鼠.
- 测试包括T迷宫,巴恩斯迷宫和新的对象识别任务.
- 通过检查新奇探索对记忆巩固的影响来评估行为标记.
主要成果:
- 9月5日/-小鼠在空间任务 (T迷宫,巴恩斯迷宫) 和对象位置记忆中表现正常.
- 在September5-/-小鼠中,短期和长期的物体识别记忆是完整的.
- 9月5日/-小鼠在新奇感应的记忆稳定中表现出选择性缺陷,未能巩固不稳定的记忆痕迹.
结论:
- 对于基线海马体依赖的空间和物体识别记忆,septin-5是不可或缺的.
- 七月素-5涉及到依赖于新奇性的弱海马体记忆的稳定.
- 这些发现表明,septin-5有助于突触标记的类似过程,这些过程对记忆巩固至关重要.
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