解码干扰:治疗单克隆抗体如何挑战血清蛋白电泳和免疫固定
Julie Milandri1, Marine Jaillard1, Mariette Laffineur1
1Immunology Laboratory, Dpt Humoral Immunity, Hospices Civils de Lyon, Hopital Lyon Sud, 165 chemin du Grand Revoyet F-69495, Pierre Bénite, France.
Clinical biochemistry
|November 7, 2025
概括
治疗性单克隆抗体可能会干扰单克隆胃病症检测. 这项研究描述了它们的电泳特征,有助于在接受治疗的患者中准确诊断.
科学领域:
- 临床化学 临床化学
- 免疫学 免疫学 免疫学
- 蛋白质电泳是蛋白质的电泳.
背景情况:
- 血清蛋白电泳 (SPEP) 和免疫固定电泳 (IFE) 对于诊断单克隆性阴茎病变至关重要.
- 治疗性单克隆抗体 (mAbs) 通过模仿SPEP和IFE上的病理性单克隆蛋白质,可以引起诊断混乱.
- 了解mAb干扰对于准确的患者管理至关重要.
研究的目的:
- 评估SPEP和IFE中治疗mAbs的潜在干扰.
- 描述各种治疗 mAbs. 的电泳迁移模式.
- 为了确定这些干扰物质的检测值.
主要方法:
- 分析了七种治疗性mAbs (达拉图穆马布,伊萨图克西马布,里图克西马布,埃拉拉纳塔马布,特克利斯塔马布,埃库利祖马布,拉武利祖马布).
- 一个低二球蛋白血清模型被使用,mAbs从1.5g/L稀释到0.1g/L.
- 毛细管电泳 (CE) 和IFE用于分析.
主要成果:
- 里图西马布和埃拉拉纳塔马布显示了缓慢的马区域峰值 (IgG kappa).
- 德克利斯塔马布在玛区域 (IgG lambda) 中部迁移,可检测到0.15g/L (SPEP) 和0.02g/L (IFE).
- 拉武利祖马布 (IgG kappa) 在β2区域迁移,可检测到0.5g/L (SPEP) 和0.1g/L (IFE).
结论:
- 这项研究定义了几个mAb疗法的电泳行为.
- 区分与治疗相关的峰值与真正的单克隆性阴茎病变是必不可少的.
- 在接受mAb治疗的患者中,推Reflex IFE进行准确的解释.
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