放射性核素标记单克隆抗体(McAb)免疫反应活性分数的测定

  • 摘要: 用直线外推法通过对放射性核素标记的单克隆抗体(McAb)与靶细胞的结合试验,测定标记McAb的免疫反应活性分数。叙述了方法的基本原理和免疫结合反应平衡曲线图的关系式(T/B=1+1/(Ka·C)+T/C)。试验表明,T/B与T的函数关系近似直线。用线性回归方法计算出标记McAb免疫反应的活性分数。推荐该法作为放射性标记McAb的质量控制方法。

     

    Abstract: DETERMINATIONOFIMMUNOREACTIVEFRACTIONOFRADIONUCLIDELABELLEDMONOCLONALANTIBODIES(McAb)MiaoJishengShenYiWuJiyong(ShanghaiFirstPneumologyHospital,200433)ABSTRACTUsingbindingasayforradionuclidelabeledMcAbwithtargetcelantigen,immunore-activefractionoflabeledMcAbisdeterminedbylinearextrapolation.Thebasicprincipleofmethodandrelationformulaofequilibriumplotofimmunobindingreaction(T/B=1+1/(Ka·C)+T/C)aredescribed.ThetestdatademonstrateaverycloselylinearrelationshipofT/BasafunctionofT.TheimmunoreactivefractionoflabeledMcAbiscomputedbymeansoflinearregressionanalysis.Themethodasaqualitycontrolprocedureforradiola-beledMcAbisrecommended.Keywordsimmunoreactivefractionradiolabelmonoclonalantibody

     

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