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在基于质谱的蛋白质定量测量中验证等等质释放的策略,以阿波利波蛋白为例 (a)

Yuri E M van der Burgt¹, Fred P H T M Romijn¹, Maxim M Treep¹

¹Department of Clinical Chemistry and Laboratory Medicine, 4501 Leiden University Medical Center , Leiden, The Netherlands.

Clinical chemistry and laboratory medicine

|October 25, 2024

概括

定量质谱 (MS) 通过识别和排除错误的来确保精确的蛋白质量测量. 这种验证的参考测量程序 (RMP) 对于阿波利波蛋白 (apo) 提高了诊断精度和标准化.

科学领域:

临床化学临床化学
蛋白质组学是指蛋白质组学.
质谱测量质量谱测量

背景情况:

定量蛋白质质谱 (MS) 对于精确诊断和参考标准化至关重要.
了解蛋白质到的转化对于确保准确的量化至关重要,特别是对阿波利波蛋白 (apo) 的量化.

研究的目的:

为了验证在MS分析期间,量化不是隐藏在错误的蛋白质骨干中.
为了建立一个可靠的参考测量程序 (RMP) 量化.

主要方法:

脂蛋白 (a) 被故意消化得不理想,以识别使用高分辨率液体染色学协同识别错误的.MS.
将蛋白质转化为的转化进行了映射,重点关注含有apo (a) 量化的错误化.
每个apo(a) 量化的四个同位素被用于评估内部标准的线性.

主要成果:

在错误分离的中发现了两个隐藏的apo (a) 量化,并添加到多重反应监测列表中.
候选RMP成功排除了在apo(a) 量化中误解的存在.
这种方法提高了针对国家/地区的量化数据的可靠性.

结论:

候选RMP被验证为商业脂蛋白测试的更高阶方法.
基于MS的apo(a) 蛋白质形式的量化使得准确的摩尔apo(a) 水平成为可能,超越了混的质量测量.
这一进步支持国际临床化学和实验室医学联合会对诊断准确性的认可.

关键词:

这是一种Apolipoprotein蛋白.同等分子蛋白解.脂蛋白 (a) 是一种蛋白质类量化的量化.定量蛋白质质谱质谱学量化蛋白质质谱学

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