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在结构质谱的透镜下的神经纤维光链

Salomé Coppens^1,2, Dea Gogishvili^3,4, Valentina Faustinelli^1,5

¹National Measurement Laboratory, LGC, Queens Road, TW11 0LY Teddington, U.K.

ACS chemical neuroscience

|January 2, 2025

概括

神经纤维光链 (NfL) 是轴突损伤的一个关键生物标志物. 这项研究描述了NfL结构,揭示了它的结构灵活性以及它如何在不同的生物流体中发生变化,这对于准确的NfL测量开发至关重要.

科学领域:

生物化学生物化学
结构生物学结构生物学
生物标志物发现发现

背景情况:

神经纤维光链 (NfL) 作为神经退行性疾病和创伤性脑损伤的非特异性生物标志物,表明轴突损伤.
准确量化NfL对于可靠的临床诊断和研究至关重要.

研究的目的:

执行神经纤维光链 (NfL) 的初级校准器的详细结构特征.
评估不同溶剂条件对NfL结构和形状灵活性的影响.
为了确定NfL校准器开发的关键质量属性.

主要方法:

使用-交换质谱法 (HDX-MS) 来分析NfL结构.
结构性特征包括测量序列,高阶结构,溶剂可访问性和结合特征.
在KPBS,人工脑脊液 (aCSF) 和aCSF与人血清白蛋白进行了实验.

主要成果:

神经纤维光链 (NfL) 具有显著的结构异质性和形状灵活性.
NfL的结构组合对不同矩阵的稀释敏感,包括水性缓冲器,aCSF和aCSF与人血清白蛋白.
特定的NfL区域,包括头部,螺旋和尾部域,显示出基于溶剂条件的溶剂可访问性和形状的改变.
HDX-MS确定了可能参与NfL-人血清白蛋白相互作用的界面残留物.

结论:

该研究为潜在的初级NfL校准器提供了关键的质量属性.
了解NfL在各种条件下的结构性行为对于准确的量化和测试开发至关重要.
结果将指导生物化学和临床测定开发,样品处理和NfL测量的制造实践.

关键词:

人类血清白蛋白的人类血清白蛋白.-交换的交换方式质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量神经纤维光链的光链.主要校准器的主要校准器结构性特征的结构性特征.

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