鉴定与神经退行性疾病相关的非特异性影响蛋白质的蛋白质毒性和蛋白质保护性细菌
Alyssa C Walker1, Rohan Bhargava1, Michael J Bucher1
1Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA.
iScience
|September 23, 2024
概括
肠道细菌影响神经退行性疾病如阿尔茨海默氏症和帕金森症中的蛋白质聚合. 一种特定的细菌Prevotella corporis激活了宿主细胞中的保护性热冲击反应.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 胃肠病学 胃肠病学
背景情况:
- 神经退行性蛋白质构造性疾病 (PCD) 缺乏治疗方法.
- 肠道微生物群在PCD病原体中的作用正在出现,但人们对其了解甚少.
- 细菌对疾病相关蛋白质的具体影响在很大程度上是未知的.
研究的目的:
- 研究各种人类细菌分离物对蛋白质聚合和毒性的影响.
- 为了确定细菌影响是否特定于与疾病相关的蛋白质或向一般蛋白质稳定.
- 为了识别可能调节宿主蛋白质稳定性的特定细菌.
主要方法:
- 在*C. elegans*模型中选了229个人类细菌分离物对Aβ1-42,α-synuclein和多聚胺聚合物的影响.
- 评估了细菌对不同疾病相关蛋白质的蛋白质聚合和毒性的影响.
- 研究了包括Prevotella corporis在内的蛋白保护性细菌对宿主细胞反应的机制.
主要成果:
- 细菌对蛋白质聚合的影响在Aβ1-42,α-synuclein和多重谷氨酸中一致,表明宿主蛋白质稳定性的调节.
- 普雷沃特拉体通过激活"C. elegans"的热冲击反应来表现出蛋白质保护作用.
- 微生物对宿主蛋白质稳定的调节为PCD病变发生提供了新的角度.
结论:
- 肠道细菌可以通过影响宿主蛋白质稳定,持续影响各种与疾病相关的蛋白质的聚合.
- 普雷沃特拉体 (Prevotella corporis) 是一种细菌的具体例子,它通过热冲击反应对宿主蛋白质稳定产生有益影响.
- 了解个体细菌对PCD蛋白质的影响,可能会导致针对肠道微生物群的新治疗策略.
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