On-column refolding and purification of recombinant human interleukin-1 receptor antagonist (rHuIL-1ra) expressed as inclusion body in Escherichia coli
被引:7
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作者:
Tan, HD
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Tan, HD
Dan, GP
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Dan, GP
Gong, HY
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Gong, HY
Cao, LJ
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机构:Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Cao, LJ
机构:
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
[2] Yushui Biopharmaceut Co Ltd, Chongqing 200400, Peoples R China
human interleukin-1 receptor antagonist;
inclusion body;
on-column refolding;
D O I:
10.1007/s10529-005-8655-5
中图分类号:
Q81 [生物工程学(生物技术)];
Q93 [微生物学];
学科分类号:
071005 ;
0836 ;
090102 ;
100705 ;
摘要:
Recombinant human interleukin-1 receptor antagonist (rHuIL-1ra) was produced in E. coli as an inclusion body. rHuIL-1ra was purified to Over 98% purity by anion exchange chromatography after on-column refolding. The optimized processes produced more than 2 g pure refolded rHuIL-1ra per 1 l culture, corresponding to a 44% recovery, without an intermediate dialysis step. Refolded rHuIL-1ra had full biological activity with the MTT assay. An intramolecular disulfide linkage in the oxidized recombinant protein was suggested by data from HPLC and non-reducing SDS-PAGE.