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Thy1-ApoE4/C/EBPβ双转基因小鼠作为阿尔茨海默病的零星模型

Zhengjiang Qian¹, ZhiHao Wang², Bowei Li³

¹Faculty of Life and Health Sciences, Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, China.

Molecular psychiatry

|April 24, 2024

概括

一个新的小鼠模型,Thy1-ApoE4/C/EBPβ,模仿零星的阿尔茨海默病 (AD) 病理,没有遗传突变. 这种模型显示了年龄相关的认知衰退,大脑缩,以及像粉样质斑块和神经纤维状结等AD病理的标志.

科学领域:

神经科学是一个神经科学.
遗传学是一个遗传学.
病理学病理学病理学

背景情况:

大多数阿尔茨海默氏症 (AD) 病例是晚发症和零星的,但目前的小鼠模型往往通过过度表达突变基因来模仿早期家族性AD (FAD).
现有的AD小鼠模型未能回顾AD病理的全谱,限制了它们的翻译价值.

研究的目的:

开发和描述一种新的双重转基因小鼠模型 (Thy1-ApoE4/C/EBPβ),该模型回顾了散发性阿尔茨海默病的关键病理.
在没有人类APP或PS1/2突变的情况下,在这个新模型中评估AD特征的年龄相关发展.

主要方法:

产生Thy1-ApoE4/C/EBPβ双转基因小鼠.
使用临床AD诊断标准评估认知功能和大脑结构.
通过Aβ PET和Tau PET成像评估粉样蛋白-β (Aβ) 聚合和神经纤维状的形成.
对神经炎症标志物的分析.

主要成果:

Thy1-ApoE4/C/EBPβ小鼠表现出渐进的认知衰退和大脑缩,反映了阿尔茨海默病患者的表型.
观察到Aβ斑块和神经纤维状的年龄相关积累,PET成像证实了这一点.
在这些小鼠的大脑中检测到广泛的神经炎症,与AD病理学一致.

结论:

Thy1-ApoE4/C/EBPβ小鼠模型有效地以年龄依赖的方式复制散发性阿尔茨海默病的主要病理.
这种模型为研究零星AD病原体和测试潜在治疗干预措施提供了宝贵的工具.

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