title: [Renaturation with simultaneous purification of the recombinant human Flt3 ligand from inclusion bodies by high performance hydrophobic interaction chromatography].
abstract: Flt3 ligand (FL) is a class of cytokines with the functions of promoting early hematopoiesis. It has important clinical value in promoting growth and development of hematopoietic cells and hematopoietic mobilization. In order to obtain large quantities of recombinant human FL (rhFL) by genetic engineering methods for clinic and research, in this work, rhFL was expressed in E. coli as inclusion bodies. The inclusion bodies were recovered, cleaned and solubilized in 8 mol/L urea, the solubilized rhFL was renatured by high performance hydrophobic interaction chromatography (HPHIC) with simultaneous purification, the retention feature and renaturation regularity were studied. The results showed that when the denatured protein concentration was 8.51 g/L, and the end group of stationary phase was PEG800, under the conditions of mobile phase of pH 7.0 and with the addition of 4 mol/L urea, 1.8 mmol/L glutathione (GSH) and 0.3 mmol/L oxidative glutathione (GSSG), a mass recovery of 36.9% and a purity of 94.5% were obtained after refolding with simultaneous purification. The obtained rhFL was successfully renatured with simultaneous purification in only one step of HPHIC, and it provided a foundation for the manufacturing of high quality rhFL.
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education, Institute of Modern Separation Science, Northwest University, Shaanxi Key Laboratory of Separation Science, Xi' an 710069, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Jia
authors.forename: Lili
authors.initials: L
authors.lastname: Wang
authors.forename: Dong
authors.initials: D
authors.lastname: Gao
authors.forename: Xindu
authors.initials: X
authors.lastname: Geng
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D002479:Inclusion Bodies / Q000737:chemistry*; D008565:Membrane Proteins / Q000096:biosynthesis / Q000235:genetics / Q000302:isolation & purification*; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000235:genetics / Q000302:isolation & purification
chemical_list: D008565:Membrane Proteins; D011994:Recombinant Proteins; C084881:flt3 ligand protein