重组人白细胞介素-2/ 粒细胞-巨噬细胞集落刺激因子融合蛋白的纯化及复性研究

摘要

目的研究重组人白细胞介素-2/ 粒细胞-巨噬细胞集落刺激因子(IL-2/GM-CSF)融合蛋白纯化及复性的最佳条件。方法常规方法提取包涵体,用本室专利技术提纯,复性后样品经DEAE-Sepharose FF离子交换层析,获得融合蛋白。结果获得具有生物活性的融合蛋白,其纯度达到95%。结论此工艺操作简便,纯化效果好,获得率高。%Objective To study the purification and renaturation of recombinant human IL-2/GM-CSF fusion protein. Methods After the inclusion bodies were isolated, the optimal conditions of denaturation and renaturation were studied. The renatured recombinant human IL-2/GM-CSF was purified by DEAE-Sepharose FF ion-exchange chromatography. Results The purified product manifested biological activity with purity of up to 95%. Conclusions The procedures employed in this study is simple and reliable.