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Updated: Jun 25, 2025

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在嗅觉网络中SARS-CoV-2-诱导的I型干扰素信号失调对阿尔茨海默氏病的影响
George D Vavougios1, Theodoros Mavridis2, Triantafyllos Doskas3
1Department of Neurology, Medical School, University of Cyprus, Nicosia 1678, Cyprus.
Current issues in molecular biology
|May 24, 2024
概括
I型干扰素 (IFN-I) 在嗅觉通路中的信号失调将COVID-19与阿尔茨海默病风险联系起来. 发现的关键基因可能为神经退行性疾病提供治疗点.
科学领域:
- 神经免疫学 神经免疫学
- 传染病病理学 传染病病理学
- 遗传学和基因组学 在
背景情况:
- I型干扰素 (IFN-I) 信号干扰是COVID-19病变的核心.
- 大脑中的IFN-I失调与认知衰退和阿尔茨海默病 (AD) 有关.
- 外周IFN-I诱导可能会影响中枢神经系统 (CNS),即使没有严重的感染.
研究的目的:
- 在COVID-19患者中,沿过硫系路线识别丰富的IFN-I特征和基因.
- 研究这些IFN-I基因网络与阿尔茨海默氏症病理学和风险的关联.
主要方法:
- 从COVID-19患者的鼻腔粘膜,嗅觉球和杏仁体发表的转录数据集的分析.
- 对阿尔茨海默病患者的转录基因数据进行审查,以检测I型干扰素路径的丰富性.
- 基因组丰富分析,基因-Venn方法,以及用于基因识别和风险关联的Agora网络资源.
主要成果:
- 在所有测试样本中,I型干扰素信号通路显著丰富.
- 确定了与COVID-19中枢神经系统和AD病理学相关的14个基因特征,包括IFITM和OAS家族基因.
- 包括HLA-C,HLA-B,HLA-A,PSMB8,IFITM3,HLA-E,IFITM1,OAS2和MX1在内的9个基因与阿尔茨海默病风险增加有关.
结论:
- 这项研究支持I型干扰素信号在从鼻上皮层到杏仁核的扩展嗅觉网络的失调.
- 这个途径中的特定基因与阿尔茨海默病的病理学有关,并增加了风险.
- 需要进一步研究这种途径的可药性,可能是使用IFN-β疗法.
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