【摘 要】
:
目的建立一套新的同时纯化和复性工艺,用于基因重组人肿瘤坏死因子-α(rhTNF-α)的纯化.方法采用高效疏水作用色谱,直接从表达rhTNF-α的大肠杆菌裂解液中纯化rhTNF-α,并采
【机 构】
:
第四军医大学化学教研室,,西北大学现代分离科学研究所,
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目的建立一套新的同时纯化和复性工艺,用于基因重组人肿瘤坏死因子-α(rhTNF-α)的纯化.方法采用高效疏水作用色谱,直接从表达rhTNF-α的大肠杆菌裂解液中纯化rhTNF-α,并采用稀释法和透析法对上述样品进行复性研究.结果高效疏水作用色谱在纯化rhTNF-α的同时,可获得高复性效率.同时,也使原来需要几步才能完成的操作,在疏水作用色谱上一次完成,大大简化了操作步骤.用SDS-PAGE和考马斯亮兰染色,对纯化的rhT-NF-α进行分析和鉴定,其一步纯化的纯度达到95%以上,活性回收率分别较稀释法和透析法高2倍和3.5倍.结论建立的纯化及同时复性的新工艺,具有简单、快速和纯度高的优点.
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