在干血中的RSV中和抗体
Jonne Terstappen1,2, Eveline M Delemarre2, Anouk Versnel2
1Department of Pediatric Infectious Diseases and Immunology, Wilhelmina Children's Hospital, University Medical Center Utrecht, the Netherlands.
The Journal of infectious diseases
|July 25, 2024
概括
干血点检测准确地测量了呼吸道同胞病毒 (RSV) 中和,为疫苗和抗体试验提供了传统血液抽取的更简单的替代方案. 这种以患者为中心的方法简化了样本采集和处理.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 临床试验 临床试验
背景情况:
- 呼吸道同胞性病毒 (RSV) 中和是疫苗和单克隆抗体 (mAb) 疗效的关键.
- 传统的血清学需要静脉穿刺,使得临床试验中的样本采集,处理,储存和运输变得复杂.
- 干血点 (DBS) 采样提供了一种简化,具有成本效益的替代方案.
研究的目的:
- 用干燥的毛细血管血液验证测量RSV中和的试验.
- 评估DBS采样作为临床试验中以患者为中心的解决方案的可行性.
主要方法:
- 功能性抗体在匹配的血清和DBS样本中的功能性抗体比较,该样本来自对抗RSV预注射F mAb (RSM01) 的第一阶段试验.
- 使用RSV-A2-mKate和Hep-2细胞量化半最大抑制度 (IC50).
- 评估DBS样品在时间和温度压力下的稳定性.
主要成果:
- 在DBS和血清中的功能性抗体之间存在高相关性 (R2 = 0.98,P < .0001).
- 对DBS的测定精度与血清可比.
- 在室温和冷时,mAb功能在DBS中保持稳定9个月.
结论:
- 通过DBS证明了通过测量RSV中和的可行性.
- DBS测试为RSV和潜在的其他病毒感染 (流感,SARS-CoV-2) 的血清学提供了一个以患者为中心的替代方案.
- 这种方法可以简化临床试验并降低相关成本.
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