消除药物向干扰特定抗体或其F(ab') 2片段在桥接免疫性测定中的干扰
Xiaojie Deng1, Yingying Hou1,2, Wenyi Yuan1
1Center for Drug Safety Evaluation and Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
Bioanalysis
|February 22, 2024
概括
研究人员开发了一种新的检测方法来检测抗DB-1003抗体,克服由子IgE引起的错误阳性. 这种方法使用针对性抗体来提高药物开发的准确性.
科学领域:
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
- 测试开发 测试开发
背景情况:
- DB-1003是一种人性化的抗IgE单克隆抗体,与奥马利祖马布相比,它具有更高的亲和力.
- 针对抗DB-1003抗体的现有的基于亲和度捕获化 (ACE) 的桥接电化学发光免疫测试 (ECLIA) 易受子血清IgE错误阳性的影响.
- 药物向干扰是免疫性测定中的一个重大挑战.
研究的目的:
- 开发一种基于ACE的强大的桥梁ECLIA,用于检测抗-DB-1003抗体.
- 为了减轻药物向干扰,特别是来自子血清IgE,在抗-DB-1003抗体测定中.
- 建立在临床前研究中检测抗药抗体 (ADA) 的敏感和特定测定方法.
主要方法:
- 使用特定标抗体或其F(ab') 2片段来捕获DB-1003.
- 采用基于ACE的桥梁ECLIA格式用于抗-DB-1003抗体检测.
- 评估测试灵敏度和耐受性对药物标干扰使用尖样本.
主要成果:
- 开发的试验表明,对抗DB-1003抗体的敏感度至少为100ng/ml.
- 该试验成功地耐受了高度的子IgE (至少20.0μg/ml),当抗药抗体水平为250 ng/ml时.
- 纳入针对性抗体片段有效消除了来自子IgE的错误阳性信号.
结论:
- 使用针对性抗体或其F(ab') 2片段的策略在克服子血清IgE干扰方面是有效的.
- 这种方法提高了基于ACE的桥接ECLIA对抗DB-1003抗体检测的可靠性.
- 在药物开发过程中,改进的试验对准确的免疫原性评估至关重要.
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