Synthesis of Novel Hydrophobic Media and Purification of Recombinant HBsAg

A novel hydrophobic medium with propyl as functional group and Sepharose 6B as matrix was designed and synthesized. The comparison of the hydrophobic medium synthesized with the commercial products was made by hydrophobic interaction chromatography(HIC) in isolating recombinant hepatitis B surface antigen(r HBsAg). r HBsAg was further purified to the final products by following a downstream procedure . The results indicate that the synthesized hydrophobic medium possesses a stable structure and desired physical and chemical properties. They were used to purify r HBsAg with a high yield and purity. Both the immunity and stability of hepatitis vaccine made by the r HBsAg products have reached the same level as other similar kinds of products.

带有约束条件的四参数Logistic曲线分析在干扰素生物学活性检定中的应用

目的改进目前干扰素(interferon,IFN)生物学活性检定中的数据处理方法。方法在四参数Logistic曲线回归中加入约束条件,使之成斜度比例或平行曲线。结果用改进的方法对已有的实验数据进行分析,生物学活性计算结果与当前检定方法近似。此方法可对实验的可靠性进行初步估计,并可估计检测结果的置信区间。结论带约束条件的四参数Logistic曲线分析法可用于IFN生物学活性检定,模型在统计学方面较目前的数据处理方法更完整、可靠。