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Efficient expression of recombinant human pro-urokinase in CHO cells and its purification

重组人尿激酶原在CHO细胞中的高效表达及其纯化



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ChineseJournalofBioprocessEngineering
Vol.10No.5
Sep.2012
doi:10.3969/j.issn.1672-3678.2012.05.010
NOPH
:2012-04-11
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:1672-3678(2012)05-0050-05
Efficientexpressionofrecombinanthumanprourokinasein
CHOcelsanditspurification
LIShichong,YELingling,LIUHong,ZHANGZhengguang,
GAOLihua,HUXianwen,CHENZhaolie
(InstituteofBiotechnology,AcademyofMilitaryMedicalSciences,Beijing100071,China)
Abstract:Theeficientexpressionvectorforrecombinanthumanprourokinase(rhProUK)wasconstruc
tedwiththecombinationofchickenβglobinMARsequences,humanelongationfactoralpha1(hEF1α)
housekeepinggeneregulatorysequences,andRNAstabilityandtheoutputsequence.TherhProUKex
pressionlevelreached1299IU/cels6/dinCHO(Chinesehamsterovary)cellines.TherhProUK
containingsupernatantpurifiedwithcationexchangechromatography,hydrophobicinteractionchromatog
raphy,gelexclusionchromatographyprocessresultedinrhProUKpurityover95% withrecoveryrateof
60%-70%
Keywords:CHOcels;rhuproUK;expression;purification
  
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