无离子纳米塑料污染物促进与帕金森病相关的α-synuclein聚合
Zhiyong Liu1, Arpine Sokratian1, Addison M Duda2
1Duke Center for Neurodegeneration and Neurotheraputics, Duke University, Durham, NC, USA.
Science advances
|November 17, 2023
概括
阴性纳米塑料加速了α-synuclein蛋白质聚合物的形成和传播. 这种纳米塑料诱导的小鼠病理与帕金森病等神经退行性疾病中的环境污染有关.
科学领域:
- 环境科学 环境科学
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
背景情况:
- 环境中纳米塑料污染水平的上升是一个越来越令人担忧的问题.
- α-synuclein (α-synuclein) 蛋白质聚合是帕金森病和相关痴呆症的标志.
研究的目的:
- 为了研究纳米塑料和α-synuclein之间的相互作用.
- 确定纳米塑料对α-synuclein聚合和扩散在神经元细胞和体内生物中的影响.
主要方法:
- 纳米塑料-α-synuclein相互作用的体外研究,专注于两性病和非粉样成分 (NAC) 领域.
- 使用克拉特林依赖性内细胞酶的细胞研究来评估纳米塑料内部化和溶解体功能.
- 在体内小鼠模型评估由纳米塑料诱导的α-synuclein病理的传播.
主要成果:
- 阳离子纳米塑料强烈促进α-synuclein纤维的形成和传播通过高亲和力结合NAC域.
- 纳米塑料被神经元内化,导致轻微的溶酶体损伤和减少聚合α-synuclein的降解.
- 在小鼠中,纳米塑料加剧α-synuclein病理的传播,特别是诱导黑色物质中多巴胺基神经元的入.
结论:
- 纳米塑料污染物可以直接诱导和恶化α-synuclein聚合和病理.
- 纳米塑料污染和以α-synucleinopathies为特征的神经退行性疾病之间存在潜在的环境联系.
- 需要进一步的研究来探索这种联系及其对公共健康的影响.
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