不同的α-synuclein菌株在神经元中差异地促进tau的包容性
Jing L Guo1, Dustin J Covell, Joshua P Daniels
1Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.
Cell
|July 6, 2013
概括
独特的α-synuclein (α-synuclein) 纤维的菌株可以交叉种子tau聚合,影响神经退行性疾病,如帕金森氏症. 这些发现揭示了蛋白质菌株多样性是疾病异质性的基础.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 病理学 病理学 病理学
背景情况:
- 神经退行性疾病的特征是蛋白质聚合物的积累,例如阿尔茨海默氏症中的陶,以及帕金森氏症中的α-synuclein (α-synuclein).
- 病理性蛋白质通常在受疾病影响的大脑中共同沉积.
研究的目的:
- 调查聚合α-synuclein是否可以直接启动纤维化 (交叉播种).
主要方法:
- 向初级神经元和转基因小鼠注射预制的α-synuclein纤维.
- 蛋白酶K的消化,以分析α-synuclein菌株的形状差异.
主要成果:
- 两种不同的合成α-synuclein纤维素菌株在体外和体内交叉种植tau聚合中表现出不同的效率.
- 在合成α-synuclein菌株之间以及来自帕金森病患者的α-synuclein之间确定了构造上的差异.
结论:
- 在神经退行性疾病的大脑中可能存在明显的α-synuclein菌株.
- 蛋白质菌株的多样性可能解释了同核蛋白病变中观察到的异质性.
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