一种与自闭症谱系障碍相关的分子Lingo2的可溶性形式,在神经元中起到激发性突触组织者的作用
Fumiaki Yoshida1, Ryota Nagatomo1, Shun Utsunomiya2
1Laboratory of Neuropathology and Neuroscience, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan.
Translational psychiatry
|October 23, 2024
概括
富含白的重复和免疫球蛋白域含有蛋白2 (Lingo2) 在自闭症谱系障碍 (ASD) 的小鼠模型中被上调. 这种被分泌为sLingo2的蛋白质促进激发性突触的形成,为ASD的发病过程提供了洞察力.
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
- 遗传学 遗传学 是一个
背景情况:
- 自闭症谱系障碍 (ASD) 是一种神经发育状况,其特征是社会沟通缺陷和重复性行为.
- 对于ASD的一个常见的小鼠模型涉及母亲的酸 (VPA) 暴露,导致神经元刺激/抑制 (E/I) 平衡的改变和类似ASD的行为.
- 这种VPA模型背后的精确分子机制及其与人类ASD病原发生的相关性尚未完全理解.
研究的目的:
- 研究VPA诱导的ASD小鼠模型的分子基础.
- 为了确定关键的分子参与者参与观察到的E / I不平衡和ASD类行为.
- 探索特定蛋白质在激发性突触形成中的作用及其与ASD的潜在联系.
主要方法:
- 来自暴露于VPA的小鼠的神经元的定量分泌组分析.
- 提升调节蛋白的识别和表征.
- 在神经元培养物 (老鼠和人类) 中研究已识别的蛋白质的功能.
- 测试用于测量突触活动和形成.
主要成果:
- 在VPA模型神经元的条件介质中,含有白蛋白丰富的重复和免疫球蛋白域含有蛋白2 (Lingo2) 水平显著上调.
- 分泌的形式,sLingo2,被确定为ADAM10介导加工的产物.
- sLingo2 证明了在老鼠和人类神经元中诱导激发性突触形成的能力.
- 用sLingo2治疗增加了人类神经元中微型刺激后突触电流的频率.
结论:
- 升级Lingo2及其分泌形式,sLingo2,是ASD的VPA小鼠模型中的一个关键分子发现.
- sLingo2充当激发性突触组织者,可能有助于ASD中出现的E/I失衡.
- 对sLingo2介导激发性突触发生的进一步研究可以阐明ASD病原体并确定治疗点.
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