高效分子排阻色谱法测定抗毒素/抗血清类制品纯度

Determination of Purity of Antitoxin/Antiserum Products by High Performance Size Exclusion Chromatography

关键词:  高效分子排阻色谱法|抗毒素/抗血清类制品|纯度

Key words:  high performance size exclusion chromatography|antitoxin/antiserum products|purity

摘要:

目的 建立高效分子排阻色谱法（high performance size exclusion chromatography，HPSEC）测定抗毒素/抗血清类制品纯度，并应用该方法对52批样品进行测定。方法 采用TOSOH TSKgelG3000SWxl色谱柱，以含1%异丙醇，0.2 mol·L^-1磷酸盐缓冲液（pH 7.0）为流动相，流速0.6 mL·min^-1，检测波长280 nm，进样体积20 μL，柱温室温，按面积归一化法计算各组分相对百分含量。结果 选取抗毒素类和抗血清类制品各1批，在蛋白质浓度为1.2~24 mg·mL^-1时，主峰F（ab'）₂、大分子杂质峰和小分子杂质峰峰面积均与相应蛋白质浓度呈良好线性关系（n=5，r>0.999 0），重复性RSD均在0.4%~0.9%（n=6），主成分F（ab'）₂定量限分别为0.1 μg和0.2 μg，检出限分别为0.02 μg和0.1 μg，制备的供试品溶液在室温条件下12 h内各组分稳定性良好。结论 建立的HPSEC可用于抗毒素/抗血清类制品纯度的测定。

Abstract:

OBJECTIVE To establish a high performance size exclusion chromatography(HPSEC) method for the purity determination of antitoxin/antiserum products and to be applied to determine the purity of 52 samples. METHODS TOSOH TSKgelG3000SWxl column was used, the 0.2 mol·L^-1 phosphate buffer(pH 7.0) containing 1% isopropanol were used as mobile phase. The flow rate was 0.6 mL·min^-1, the detection wavelength was 280 nm, the injection volume was 20 μL, and the column was kept at room temperature. The relative percentage of each component was calculated by peak area normalization. RESULTS One batch of antitoxin and one batch of antiserum were selected, in the protein concentration ranges from 1.2-24 mg·mL^-1, the peak areas of F(ab')₂, high molecular weight impurities and small molecular weight impurities had good linear relationship with the corresponding protein concentration(n=5, r>0.999 0), repeatability RSD was 0.4%-0.9%(n=6). The limits of quantitation of F(ab')₂ were 0.1 μg and 0.2 μg, the limits of detection of F(ab')₂ were 0.02 μg and 0.1 μg, the sample solution was stable at room temperature within 12 h. CONCLUSION The HPSEC can be applied to determine the purity of antitoxin and antiserum products.