开发一种潜在的初级方法,通过电子喷雾差分流动性分析量化蛋白质.
Wei Mi1, Xinyi Zhang1, Xiangrong Tian2
1National Institute of Metrology, No.18 Beisanhuan Donglu, Beijing, 100029, China.
Talanta
|August 4, 2023
概括
一种使用电喷差分流动性分析与凝结粒子计数器 (ES-DMA-CPC) 的新蛋白质量化方法提供了准确的测量结果. 这种ES-DMA-CPC方法显示出作为一种主要量化技术的前景,它补充了现有的同位素稀释质谱法 (IDMS) 方法.
科学领域:
- 计量学 计量学 计量学
- 分析化学 分析化学
- 生物物理学的生物物理.
背景情况:
- 精确的蛋白质定量对于体外诊断和药物开发至关重要.
- 建立计量可追溯性可以确保生物测量的可靠性.
- 现有的方法可能有局限性,特别是对于不同分子重量的蛋白质.
研究的目的:
- 建立和验证一种新的蛋白质量定量的初级方法.
- 评估拟议方法的分析性能和测量不确定性.
- 将新方法与已知技术比较,例如同位素稀释质谱法 (IDMS).
主要方法:
- 开发一种蛋白质量化方法,该方法基于电子喷雾差分流动性分析,并配合凝结颗粒计数器 (ES-DMA-CPC).
- 使用经认证的参考材料 (NIMCmAb) 进行验证,并评估测量不确定性.
- 适用于各种蛋白质,包括肌球蛋白,牛血清白蛋白,IgG单克隆抗体和纤维素原 (17340 kDa).
主要成果:
- 通过ES-DMA-CPC方法,可以在广泛的分子量范围内准确量化蛋白质.
- 该方法与黄金标准同位素稀释质谱法 (IDMS) 方法有很好的一致性.
- 评估了测量不确定性,证实了量化的可靠性.
结论:
- ES-DMA-CPC 方法是蛋白质定量化的一个可行的潜在初级方法.
- 这种技术提供了准确的测量,特别是对于大分子量蛋白质.
- 在蛋白质分析中,ES-DMA-CPC方法可以作为IDMS的宝贵补充.
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