生物标志物 生物标志物
Xiao-Jun Ma1, Shweta Iyengar1, Shalaka Deshmukh1
1Alamar Biosciences, Fremont, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
使用核酸链接免疫三明治检测 (NULISA) 技术开发了一种用于脑衍生的Tau (BD-Tau) 的新型检测方法. 这种测试可以同时检测多个tau形式,从而推进阿尔茨海默病 (AD) 生物标志物研究.
科学领域:
- 生物化学 生物化学
- 神经科学是一个神经科学.
- 生物标志物发现发现
背景情况:
- 基于血液的生物标志物对于早期阿尔茨海默病 (AD) 检测至关重要.
- 虽然Aβ42/Aβ40比率和pTau形式显示出希望,但来自大脑的Tau (BD-Tau) 为区分AD和预测神经退行提供了独特的潜力.
- 需要多重测试来同时测量BD-Tau和其他Tau形式以进行全面评估.
研究的目的:
- 开发一种超敏感的BD-Tau测定方法,使用新的核酸链接免疫三明治测定 (NULISA) 技术.
- 将BD-Tau测定集成到多重面板中,同时对Tau蛋白质和其他AD生物标志物进行分析.
- 评估BD-Tau作为血基生物标志物的诊断性能和临床实用性.
主要方法:
- 开发了一种针对MAPT外显子4-5结的NULISA BD-Tau测定.
- 在使用单复数NULISA试验的血样本中评估了BD-Tau的检测能力.
- 评估了BD-Tau的整合到120个复合体的中枢神经系统疾病小组中,用于多重检测,并评估了与其他Tau异型体的潜在干扰.
- 在血和脑脊液 (CSF) 中进行了与总Tau (t-Tau) 试验的相关性分析.
主要成果:
- 努利萨BD-Tau试验证明了高特异性检测,在血和脑液中100%可量化.
- 测量BD-Tau的结果显示,脑脊液中与t-Tau的相关性非常高 (R=0.99),而血中的相关性较低.
- 将BD-Tau集成到120个复数面板中显示,对现有的Tau形式的干扰最小 (总Tau,t-pTau-181,t-pTau-217,t-pTau-231).
结论:
- 努利萨BD-Tau试验为开发基于血液的阿尔茨海默病生物标志物提供了强大的工具.
- 整合到NULISAseq中枢神经系统疾病小组中,可以同时对多个tau蛋白质形式和其他AD生物标志物进行分析.
- 这项技术提供了对AD病原和进展的更深入的了解,促进了更好的诊断和管理.
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