从人类脑脊液中发现了用于肌缩侧面硬化症的生物标志物,使用基于质谱的蛋白质组学
Sungtaek Oh1,2, Yura Jang1, Chan Hyun Na1
1Department of Neurology, Institute for Cell Engineering, Johns Hopkins University School of Medicine, 733 N. Broadway, Baltimore, MD 21205, USA.
Biomedicines
|May 27, 2023
概括
研究人员在脑脊液 (CSF) 中发现了新型蛋白质,这些蛋白质在肌缩侧面硬化症 (ALS) 中发生变化. 这些发现支持开发这种进展性神经退行性疾病的新诊断和预后生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 蛋白质组学是指蛋白质组学
背景情况:
- 肌缩侧面硬化症 (ALS) 是一种致命的神经退行性疾病.
- 有效的疗法需要强大的生物标志物用于诊断,预后和了解疾病机制.
- 大脑脊髓液 (CSF) 是识别这些生物标志物的关键生物流体.
研究的目的:
- 为了确定CSF中的新型蛋白质,与健康对照人群相比,在ALS患者中表达的差异.
- 使用定量蛋白质组技术验证潜在的ALS生物标志物.
主要方法:
- 使用质谱法 (MS) 进行蛋白质组学分析,并对分离的脊髓样本进行质量标记 (TMT) 量化.
- 使用并行反应监测 (PRM) 在未分离的CSF样本上进行有针对性的验证.
- 对20名ALS患者和20名健康对照者的比较分析 (发现),以及30名ALS患者和31名健康对照者的比较分析 (验证).
主要成果:
- 在发现阶段,分离的脑脊髓液中发现了53种不同表达的蛋白质.
- 验证阶段证实了15种蛋白质的显著差异,包括APOB,APP,CHI3L1,L1CAM和SERPINA1,在未分离的CSF中.
- 该研究确定了在ALS中改变的已知和新型蛋白质.
结论:
- 这项研究提供了ALS患者中改变的蛋白质的全面列表.
- 这些已识别的蛋白质为开发ALS的新型诊断,预后和药理动力学生物标志物提供了基础.
- 进一步的研究可以探索这些蛋白质在ALS病变发生中的功能作用.
关键词:
骨髓缩侧面硬化症 (ALS) 是一种生物标志物生物标志物大脑脊髓液中的脑脊液.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蛋白质组学 蛋白质组学更多相关视频
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