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Emamipour N, Vossoughi M, Mahboudi F, Golkar M, Fard-Esfahani P. Soluble expression of IGF1 fused to DsbA in SHuffle™ T7 strain: optimization of expression and purification by Box-Behnken design. Appl Microbiol Biotechnol 2019; 103:3393-3406. [PMID: 30868206 DOI: 10.1007/s00253-019-09719-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/17/2019] [Accepted: 02/23/2019] [Indexed: 02/06/2023]
Abstract
Production of insulin-like growth factor 1 (IGF1) in Escherichia coli mostly results in the formation of inclusion bodies. In the present study, IGF1 was fused to disulfide bond oxidoreductase A (DsbA) and expressed in SHuffle™ T7 strain, in order to obtain correctly folded protein. Soluble expression and IMAC purification of DsbA-IGF1 were optimized by applying the Box-Behnken design of response surface methodology. The optimization greatly increased concentration of soluble protein from 317 to 2600 mg/L, and IMAC yield from 400 to 1900 mg/L. Results of ANOVA showed induction OD600 and temperature had significant effects on the soluble protein expression while isopropyl-β-d thiogalactoside, in the concentrations tested, displayed no significant effect. Moreover, the three parameters of the binding buffer including, pH, concentration of NaCl, and imidazole displayed significant effects on the IMAC yield. Then, purified DsbA-IGF1 was cleaved by human rhinovirus 3C protease, and authentic IGF1 was obtained in flow through of a subtractive IMAC. Final polishing of the protein by reversed-phase HPLC yielded IGF1 with purity of 96%. The quality attributes of purified IGF1 such as purity, identity, molecular size, molecular weight, secondary structure, and biological activity were assessed and showed to be comparable to the standard IGF1. The final yield of purified IGF1 was estimated to be 120 ± 18 mg from 1 L of the culture. Our results demonstrated a simple and easily scalable strategy for production of large amounts of bioactive IGF1 by rational designing soluble protein expression, and further optimization of expression and purification methods.
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Affiliation(s)
- Nabbi Emamipour
- Molecular Parasitology Laboratory, Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | - Manouchehr Vossoughi
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Fereidoun Mahboudi
- Biotechnology Research Center, Pasteur Institute of Iran, Pasteur Avenue, Tehran, Iran
| | - Majid Golkar
- Molecular Parasitology Laboratory, Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran.
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Dangi AK, Rishi P, Tewari R. Enhancing the Yield of Active Recombinant Chitobiase by Physico-Chemical and In Vitro Refolding Studies. Protein J 2016; 35:72-9. [PMID: 26831864 DOI: 10.1007/s10930-016-9648-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Chitobiase (CHB) is an important enzyme for the production of N-acetyl-D-glucosamine from the chitin biopolymer in the series of chitinolytic enzymes. Majority of over-expressed CHB (58%) in E. coli expression system led to formation of inclusion bodies. The production and soluble yield of active CHB was enhanced by co-expression with GroEL/ES chaperonin, optimizing culture conditions and solubilization followed by refolding of remaining inactive chitobiase present in the form of inclusion bodies. The growth of recombinant E. coli produced 42% CHB in soluble form and the rest (~58%) as inclusion bodies. The percentage of active CHB was enhanced to 71% by co-expression with GroEL/ES chaperonin system and optimizing culture conditions (37 °C, 200 rpm, IPTG--0.5 mM, L-arabinose--13.2 mM). Of the remaining inactive CHB present in inclusion bodies, 37% could be recovered in active form using pulsatile dilution method involving denaturants (2 M urea, pH 12.5) and protein refolding studies (1.0 M L-arginine, 5% glycerol). Using combinatorial approach, 80% of the total CHB expressed, could be recovered from cells grown in one litre of LB medium is a step forward in replacing hazardous chemical technology by biotechnological process for the production of NAG from chitinous waste.
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Affiliation(s)
- Arun Kumar Dangi
- Department of Microbial Biotechnology, Panjab University, Sector 14, Chandigarh, 160014, India.
| | - Praveen Rishi
- Department of Microbiology, Panjab University, Chandigarh, India.
| | - Rupinder Tewari
- Department of Microbial Biotechnology, Panjab University, Sector 14, Chandigarh, 160014, India.
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Lixa C, Marques AF, Cortines JR, Neves BC, Oliveira DM, Anobom CD, Lima LMT, Pinheiro AS. Refolding, purification, and preliminary structural characterization of the DNA-binding domain of the quorum sensing receptor RhlR from Pseudomonas aeruginosa. Protein Expr Purif 2016; 121:31-40. [DOI: 10.1016/j.pep.2016.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/18/2015] [Accepted: 01/08/2016] [Indexed: 12/22/2022]
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Liu S, Li Y, Deng B, Xu Z. Recombinant Lactococcus lactis expressing porcine insulin-like growth factor I ameliorates DSS-induced colitis in mice. BMC Biotechnol 2016; 16:25. [PMID: 26932768 PMCID: PMC4774141 DOI: 10.1186/s12896-016-0255-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 02/22/2016] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Insulin-like growth factor I (IGF-I) is one important family of growth factors, which plays key role in intestinal growth, regeneration, and damage repair. However, the low natural abundance of IGF-I limits its research opportunities and practical application in the fields of medicine and animal husbandry. In this study, a tandem repeat strategy was used to express three copies of the same pIGF-I3 protein in L. lactis. The activity of recombinant pIGF-I3 (rpIGF-I3) was further examined by a mouse model of dextran sulfate sodium (DSS)-induced colitis. In addition, the potential of recombinant L. lactis expressing pIGF-I3 to reduce inflammatory disease was evaluated. RESULTS pIGF-I3 could be expressed in L. lactis by the detection of SDS-PAGE and Western blot. Experimental colitis was induced in BALB/c mice by administration of 5 % DSS in drinking water, and the clinical symptoms were observed in DSS-treated mice. Oral administration of recombinant L. lactis expressing pIGF-I3 improved the colonic architecture, and significantly reduced the increase of colonic damage score (P < 0.05). Furthermore, recombinant L. lactis expressing pIGF-I3 treatment significantly reduced serum DAO activity and colonic MPO level, and elevated colonic occludin level compared to the DSS group (P < 0.05). CONCLUSIONS The pIGF-I3 expressed in L. lactis has good biological activity, and oral administration of recombinant L. lactis expressing pIGF-I3 attenuated the symptoms and development of DSS-induced colitis in mice. These suggested that L. lactis could be a potential host bacterium for production and delivery of IGF-I against intestinal diseases.
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Affiliation(s)
- Shujie Liu
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, 145 Shiqiao Road, Hangzhou, 310021, Zhejiang, China.
| | - Yongming Li
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, 145 Shiqiao Road, Hangzhou, 310021, Zhejiang, China.
| | - Bo Deng
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, 145 Shiqiao Road, Hangzhou, 310021, Zhejiang, China.
| | - Ziwei Xu
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, 145 Shiqiao Road, Hangzhou, 310021, Zhejiang, China.
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Song HN, Jang JH, Kim YW, Kim DH, Park SG, Lee MK, Paek SH, Woo EJ. Refolded scFv antibody fragment against myoglobin shows rapid reaction kinetics. Int J Mol Sci 2014; 15:23658-71. [PMID: 25530617 PMCID: PMC4284786 DOI: 10.3390/ijms151223658] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/01/2014] [Accepted: 12/12/2014] [Indexed: 02/06/2023] Open
Abstract
Myoglobin is one of the early biomarkers for acute myocardial infarction. Recently, we have screened an antibody with unique rapid reaction kinetics toward human myoglobin antigen. Antibodies with rapid reaction kinetics are thought to be an early IgG form produced during early stage of in vivo immunization. We produced a recombinant scFv fragment for the premature antibody from Escherichia coli using refolding technology. The scFv gene was constructed by connection of the V(H)-V(L) sequence with a (Gly4Ser)3 linker. The scFv fragment without the pelB leader sequence was expressed at a high level, but the solubility was extremely low. A high concentration of 8 M urea was used for denaturation. The dilution refolding process in the presence of arginine and the redox reagents GSH and GSSH successfully produced a soluble scFv protein. The resultant refolded scFv protein showed association and dissociation values of 9.32 × 10⁻⁴ M⁻¹·s⁻¹ and 6.29 × 10⁻³ s⁻¹, respectively, with an affinity value exceeding 10⁷ M⁻¹ (k(on)/k(off)), maintaining the original rapid reaction kinetics of the premature antibody. The refolded scFv could provide a platform for protein engineering for the clinical application for diagnosis of heart disease and the development of a continuous biosensor.
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Affiliation(s)
- Hyung-Nam Song
- Medical Proteomics Research Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon 305-806, Korea.
| | - Jun-Hyuck Jang
- Department of Food and Biotechnology, Korea University, Sejong 339-700, Korea.
| | - Young-Wan Kim
- Department of Food and Biotechnology, Korea University, Sejong 339-700, Korea.
| | - Dong-Hyung Kim
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 339-700, Korea.
| | - Sung-Goo Park
- Medical Proteomics Research Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon 305-806, Korea.
| | - Myung Kyu Lee
- Medical Proteomics Research Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon 305-806, Korea.
| | - Se-Hwan Paek
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 339-700, Korea.
| | - Eui-Jeon Woo
- Medical Proteomics Research Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon 305-806, Korea.
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Kong HJ, Lee YJ, Park IS, Lee WW, Kim YO, Nam BH, Kim WJ, Jung H, Jeon YJ, An CM, Lee SJ. Molecular and functional characterizations of a Kunitz-type serine protease inhibitor FcKuSPI of the shrimp Fenneropenaeus chinensis. FISH & SHELLFISH IMMUNOLOGY 2013; 35:1025-1029. [PMID: 23811353 DOI: 10.1016/j.fsi.2013.06.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/16/2013] [Accepted: 06/17/2013] [Indexed: 06/02/2023]
Abstract
Serine proteinase inhibitors play important and diverse roles in biological processes such as coagulation, defense mechanisms, and immune responses. Here, we identified and characterized a Kunitz-type proteinase inhibitor, designated FcKuSPI, of the BPTI/Kunitz family of serine proteinase inhibitors from the hemocyte cDNA library of the shrimp Fenneropenaeus chinensis. The deduced amino acid sequence of FcKuSPI comprises 80 residues with a putative signal peptide of 15 amino acids. The predicted molecular weight of the mature peptide is 7.66 kDa and its predicted isoelectric point is 8.84. FcKuSPI includes a Kunitz domain containing six conserved cysteine residues that are predicted to form three disulfide bonds. FcKuSPI shares 44-53% homology with BPTI/Kunitz family members from other species. FcKuSPI mRNA was expressed highly in the hemocytes and moderately in muscle in healthy shrimp. Recombinant FcKuSPI protein demonstrated anti-protease activity against trypsin and anticoagulant activity against citrated human plasma in a dose-dependent manner in in vitro assays.
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Affiliation(s)
- Hee Jeong Kong
- Biotechnology Research Division, National Fisheries Research and Development Institute, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea.
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A simplified method for the efficient refolding and purification of recombinant human GM-CSF. PLoS One 2012; 7:e49891. [PMID: 23166789 PMCID: PMC3498172 DOI: 10.1371/journal.pone.0049891] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 10/17/2012] [Indexed: 01/09/2023] Open
Abstract
Human granulocyte macrophage colony-stimulating factor (hGM-CSF) is a haematopoietic growth factor and proinflammatory cytokine. Recombinant hGM-CSF is important not only as a research tool but also as a biotherapeutic. However, rhGM-CSF expressed in E. coli is known to form inclusion bodies of misfolded, aggregated protein. Refolding and subsequent purification of rhGM-CSF from inclusion bodies is difficult with low yields of bioactive protein being produced. Here we describe a method for the isolation, refolding and purification of bioactive rhGM-CSF from inclusion bodies. The method is straightforward, not requiring extensive experience in protein refolding nor purification and using standard laboratory equipment.
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