生物学杂志

• 技术方法 • 上一篇    下一篇

BLI技术高通量测定抗体浓度的方法学建立

  

  1. 广东东阳光药业有限公司, 东莞 523867
  • 出版日期:2017-10-18 发布日期:2017-10-18
  • 通讯作者: 杨彬,硕士,研究方向为生物制药,E-mail: YangBin@hecpharm.com
  • 作者简介:曾秀引,研究方向为生物制药,E-mail: zengxiuyin@hecpharm.com
  • 基金资助:
    广东省引进创新科研团队计划项目(201101Y0104990178)

Assessment of a high throughout detection method of antibody concentration by bio-layer interference technique

  • Online:2017-10-18 Published:2017-10-18

摘要: 验证了一种采用生物膜干涉技术(Bio-layer interferometry, BLI)快速高效高通量检测抗体浓度的分析方法。主要采用Protein A生物传感器,在温度为30 ℃、样品盘震摇速度为400 r/min、结合时间为2 min的条件下检测,可以达到最佳的测定效果,并对专属性、重复性、线性、准确度进行了验证。结果表明:抗体浓度在0.781~400 μg/mL范围内线性关系良好,精密度(包括分析重复性、中间精密度和日间精密度)相对偏差均小于2.5%,准确度范围在94.46%~114.00%之间,检测限为0.781 μg/mL,定量限为1 μg/mL,检测结果表明该方法可靠。此方法检测速度快、通量高,特别适合用于单克隆抗体细胞株筛选阶段大批量样品的检测与评估。

关键词: 生物膜干涉技术;单克隆抗体, 高通量筛选

Abstract: This research focused on the high throughout method for developing of antibody concentration detection based on the Bio-layer interferometry (BLI). The method gained the optimum efficiency with a 2 minutes binding on protein A sensor at a temperature of 30℃ and a shake speed of 400 r/min. The validation includes specificity, repeatability, accuracy and durability. The results showed that it fit a good linear relationship within an antibody concentration range of 0.781-400 μg/mL; relative deviations of repeatability including precision, intermediate precision and inter-day precision were below 2.5%. The accuracy ranged from 94.46% to 114.00%, the detection limit was 0.781 μg/mL and the limit of quantification was 1 μg/mL. The results certified the reliability of the method. The method can be used for detection of samples with a large scale benefitt from its high speed and throughout.

Key words: bio-film interferometry(BLI), monoclonal antibody, high throughput