外神经感染路径限制了子构造变异性,并减弱了四级结构对感染性的影响
Sheng Chun Chang1, Maria Immaculata Arifin1, Waqas Tahir2
1Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada.
PLoS pathogens
|July 8, 2024
概括
外神经感染路径,就像腹腔内感染路径一样,减少慢性衰竭疾病 (CWD) 的变性和结构的影响. 这影响了CWD菌株的进化和传染.
科学领域:
- 神经科学是一个神经科学.
- 兽医医学 兽医医学 兽医医学
- 生物化学 生化学
背景情况:
- 子,错误折叠的蛋白质异型,导致可传播的海绵状脑病变.
- 慢性衰竭疾病 (CWD) 是一种传染性病,影响鹿,通过各种传播途径传播.
- 慢性病变菌株是由蛋白 (PrPSc) 的独特生物和生物化学特性定义的.
研究的目的:
- 研究感染途径如何影响CWD子的形状选择和传播.
- 了解子四元结构对感染和菌株进化的影响.
主要方法:
- 使用基因向表达鹿PrP的小鼠模型.
- 小鼠被用含有CWD菌株Wisc-1或116AG的白尾鹿的分离或未分离的大脑同质物注射了脑内或腹腔内.
- 分析了PrPSc和PrPSc沉积物的形态稳定性,在注射小鼠的大脑和脊髓中进行分析.
主要成果:
- 脑内注射导致CWD菌株之间PrPSc形状稳定性的差异.
- 与脑内注射相比,内注射导致PrPSc具有相同的形状稳定性和较少的沉积物.
- 外神经感染减轻了PrPSc四分体结构的影响,并减少了大脑的结构变化.
结论:
- 慢性病变感染的途径显著影响PrPSc的构造和传播.
- 外神经传染途径可能导致较不多样化的CWD子种群.
- 这些发现提供了关于自然,外神经传播期间稳定的CWD菌株的发展的见解.
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