尖端蛋白碎片促进阿尔茨海默氏症的氨基代
Sujian Cao1, Zhiyuan Song2, Jinyu Rong3
1Nanomedicine Center, The Great Bay Area National Institute for Nanotechnology Innovation, 136 Kaiyuan Avenue, Guangzhou, 510700, China.
ACS applied materials & interfaces
|August 16, 2023
概括
在SARS-CoV-2尖端蛋白片段促进阿尔茨海默病 (AD) 病理通过增强粉样β聚合. 这一发现表明病毒感染可能导致神经退行和长期Covid并发症.
科学领域:
- 神经科学是一个神经科学.
- 传染性疾病 传染性疾病
- 生物化学 生化学
背景情况:
- 阿尔茨海默病 (AD) 是导致痴呆的主要原因,主要与粉样β (Aβ) 聚合有关.
- 包括SARS-CoV-2在内的病毒感染在AD病变发生中的作用尚不清楚.
- COVID-19的长期神经效应,如长期Covid,需要进一步调查.
研究的目的:
- 为了研究SARS-CoV-2尖端蛋白碎片的氨基基原性潜力.
- 要确定这种病毒片段是否与Aβ聚合相互作用并促进Aβ聚合.
- 探索SARS-CoV-2感染与阿尔茨海默氏病之间的潜在联系.
主要方法:
- 实验室和体方法被用于评估SARS-CoV-2片段的amyloidogenic特性.
- 分析了病毒和Aβ部分之间的结合亲和力.
- 使用斑马鱼胚胎来评估片的毒性.
主要成果:
- 一个SARS-CoV-2尖端蛋白的短片段 (HGVVFLHVTYV) 被确定为amyloidogenic.
- 病毒片段表现出对Aβ的高度结合倾向,促进其聚合和毒性在体外和在体内.
- 暴露于片段延迟了斑马鱼胚胎化和生存.
结论:
- 感染SARS-CoV-2可能会导致阿尔茨海默氏症的发病.
- 病毒蛋白和Aβ聚合之间的相互作用为神经退行提供了一个新的神经退行机制.
- 了解这些相互作用对于应对长期Covid和开发治疗策略至关重要.
相关概念视频
Amyloid Fibrils
9.6K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.6K
Alzheimer's Disease: Overview
521
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
521


