A new sandwich ELISA method for quantitative analysis of fusion protein IL-2-HSA
- VernacularTitle:双抗体夹心ELISA定量检测IL-2-HSA融合蛋白
- Author:
Hongmei ZHANG
;
Bo LI
;
Zuoying DUAN
;
Jianyong LEI
;
Jian JIN
;
Huazhong LI
- Publication Type:Journal Article
- Keywords:
double antibody sandwich ELISA;
quantitative analysis;
fusion protein;
IL-2-HSA
- From:
Journal of China Pharmaceutical University
2010;41(2):175-179
- CountryChina
- Language:Chinese
-
Abstract:
A double antibody sandwich ELISA for quantitative analysis of recombinant fusion protein IL-2-HSA was constructed using a polyclonal antibody to human IL-2 for capture and a monoclonal antibody to HSA with HRP-labeled conjugate for detection.The optimal concentration of the first coating antibody and detection antibody were 2 μg/mL and 0.5 μg/mL,respectively.Regression equation of the linear calibration curve was:y = 0.442 9 x-1.143 3 with a correlation coefficient of 0.996 6,and the linear detection ranged from 39.06 ng/mL to 1 250 ng/mL.Recovery from the supernatant of fermentation broth was 98.13% to 102.94%.The specificity assay indicated that it had little cross-reactions with IL-2 and HSA.The soundness analysis suggested that fermentation broth,mouse serum and dilution had no influence on the method.The present method can be used in the studies on fermentation,purification and clinical diagnosis.
