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Abstract
Acinetobacter baumannii is one of the most problematic pathogens in clinical settings. Emerging of its antibiotic-resistant strains persuade researchers to find alternative treatment options such as immunization against the notorious nosocomial pathogen. Oma87 has been introduced as an immunogenic outer membrane protein via reverse vaccinology. However, protectivity of A. baumannii Oma87 is not well known. The current research undertakes a study on the immunogenicity of recombinant Oma87 in a murine model. Some physico-chemical properties were assessed via in silico analyses. The corresponding gene was amplified and cloned into pET28a plasmid. The recombinant protein was purified and then was administered to immunize mice. Sera obtained from the immunized mice were assessed with respect to the triggered antibodies. Challenges were performed on actively or passively immunized mice. In silico analyses revealed that this protein is the same as BamA. A high titer of specific antibody was raised against rOma87 even after the first injection. The specific antibody recognized the whole cell of A. baumannii. Both active and passive immunizations confer 100 and 50% protection, respectively against ~ 2 × lethal dose (LD) of A. baumannii in the murine sepsis model. Although none of mice received ~ 5 × LD of A. baumannii survived in passive immunization, 25% of mice challenged with ~ 7 × LD of the bacteria survived and the dead mice exhibited a delayed death. Based on these results, Oma87 is the same as BamA which could be considered as a promising vaccine candidate against A. baumannii in the sepsis model.
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Mohammadi E, Mahnam K, Jahanian-Najafabadi A, Sadeghi HMM. Design and production of new chimeric reteplase with enhanced fibrin affinity: a theoretical and experimental study. J Biomol Struct Dyn 2020; 39:1321-1333. [PMID: 32098615 DOI: 10.1080/07391102.2020.1729865] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Plasminogen activators (PAs) are widely used for treatment of disorders caused by clot formation. Fibrin specific PAs are safe drugs from this group because of reducing the incidence of hemorrhage. The newer generation of PAs like tenecteplase, reteplase and desmoteplase were designed with the aim of achieving desirable properties such as improving specificity and affinity to fibrin and increasing half-life. Protein engineering and using of theoretical methods can help to rational and reliable design of new PAs with a set of favorable properties. In the present study, two new chimeric reteplase named M1-chr and M2-chr were designed with the aim of enhancing fibrin affinity also some potential properties include of increasing resistance to plasminogen activator inhibitor-1 and decreasing neurotoxicity. So, finger domain of desmoteplase was added to reteplase as a high fibrin specific domain. Some other point mutations were considering to achieve other mentioned properties. Three dimensional structure of wild-type reteplase and mutants were created by homology modeling and were evaluated by molecular dynamic simulation. Then, mutants docked to fibrin by HADDOCK web tools. Result of theoretical section verified the stability of mutants' structures. Also showed better interaction between M1-chr with fibrin than M2-chr. Wild-type and mutants were produced in bacterial expression system. Experimental assessment showed both mutants have appropriate enzymatic activity also 1.9-fold fibrin binding ability compared to wild-type. Therefore, this study offers new thrombolytic drugs with desirable properties specially enhanced fibrin affinity so they can represent a promising future in cost-effective production of favorable thrombolytic drugs.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Elmira Mohammadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, The Islamic Republic of Iran
| | - Karim Mahnam
- Faculty of Science, Department of Biology, Shahrekord University, Shahrekord, The Islamic Republic of Iran
| | - Ali Jahanian-Najafabadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, The Islamic Republic of Iran
| | - Hamid Mir Mohammad Sadeghi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, The Islamic Republic of Iran
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A novel approach for production of an active N-terminally truncated Ulp1 (SUMO protease 1) catalytic domain from Escherichia coli inclusion bodies. Protein Expr Purif 2020; 166:105507. [DOI: 10.1016/j.pep.2019.105507] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 09/23/2019] [Accepted: 10/02/2019] [Indexed: 01/21/2023]
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Yusakul G, Sakamoto S, Tanaka H, Morimoto S. Improvement of heavy and light chain assembly by modification of heavy chain constant region 1 (CH1): Application for the construction of an anti-paclitaxel fragment antigen-binding (Fab) antibody. J Biotechnol 2018; 288:41-47. [DOI: 10.1016/j.jbiotec.2018.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 10/09/2018] [Accepted: 10/29/2018] [Indexed: 11/15/2022]
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6
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Qin HM, Wang JW, Guo Q, Li S, Xu P, Zhu Z, Sun D, Lu F. Refolding of a novel cholesterol oxidase from Pimelobacter simplex reveals dehydrogenation activity. Protein Expr Purif 2017; 139:1-7. [DOI: 10.1016/j.pep.2017.07.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/11/2017] [Accepted: 07/12/2017] [Indexed: 11/26/2022]
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7
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Mukherjee J, Gupta MN. Protein aggregates: Forms, functions and applications. Int J Biol Macromol 2017; 97:778-789. [DOI: 10.1016/j.ijbiomac.2016.11.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 11/02/2016] [Accepted: 11/05/2016] [Indexed: 11/15/2022]
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Loke JJ, Kumar A, Hoon S, Verma C, Miserez A. Hierarchical Assembly of Tough Bioelastomeric Egg Capsules is Mediated by a Bundling Protein. Biomacromolecules 2017; 18:931-942. [PMID: 28196415 DOI: 10.1021/acs.biomac.6b01810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Marine snail egg capsules are shock-absorbing bioelastomers made from precursor "egg case proteins" (ECPs) that initially lack long-range order. During capsule formation, these proteins self-assemble into coiled-coil filaments that subsequently align into microscopic layers, a multiscale process which is crucial to the capsules' shock-absorbing properties. In this study, we show that the self-assembly of ECPs into their functional capsule material is mediated by a bundling protein that facilitates the aggregation of coiled-coil building blocks and their gelation into a prefinal capsule prior to final stabilization. This low molecular weight bundling protein, termed Pugilina cochlidium Bundling Protein (PcBP), led to gelation of native extracts from gravid snails, whereas crude extracts lacking PcBP did not gelate and remained as a protein solution. Refolding and reconcentration of recombinant PcBP induced bundling and aggregation of ECPs, as evidenced by ECPs oligomerization. We propose that the secretion of PcBP in vivo is a time-specific event during the embryo encapsulation process prior to cross-linking in the ventral pedal gland (VPG). Using molecular dynamics (MD) simulations, we further propose plausible disulfide binding sites stabilizing two PcBP monomers, as well as a polarized surface charge distribution, which we suggest plays an important role in the bundling mechanism. Overall, this study shows that controlled bundling is a key step during the extra-cellular self-assembly of egg capsules, which has previously been overlooked.
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Affiliation(s)
- Jun Jie Loke
- School of Materials Science and Engineering, Nanyang Technological University (NTU) , Singapore 639798, Singapore.,Centre for Biomimetic Sensor Science (CBSS), NTU , Singapore 637553, Singapore
| | - Akshita Kumar
- Centre for Biomimetic Sensor Science (CBSS), NTU , Singapore 637553, Singapore.,School of Biological Sciences, NTU , Singapore 637551, Singapore
| | - Shawn Hoon
- Molecular Engineering Lab, Biomedical Sciences Institute, Agency for Science Technology and Research (A*STAR) , Singapore 138673, Singapore
| | - Chandra Verma
- School of Biological Sciences, NTU , Singapore 637551, Singapore.,Bioinformatics Institute, A*STAR , 30 Biopolis Street, Singapore 138671, Singapore
| | - Ali Miserez
- School of Materials Science and Engineering, Nanyang Technological University (NTU) , Singapore 639798, Singapore.,Centre for Biomimetic Sensor Science (CBSS), NTU , Singapore 637553, Singapore.,School of Biological Sciences, NTU , Singapore 637551, Singapore
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Mousavi SB, Fazeli A, Shojaosadati SA, Fazeli MR, Hashemi-Najafabadi S. Purification and efficient refolding process for recombinant tissue-type plasminogen activator derivative (reteplase) using glycerol and Tranexamic acid. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.11.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Conformations of a Metastable SH3 Domain Characterized by smFRET and an Excluded-Volume Polymer Model. Biophys J 2016; 110:1510-1522. [PMID: 27074677 DOI: 10.1016/j.bpj.2016.02.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 02/19/2016] [Accepted: 02/23/2016] [Indexed: 11/20/2022] Open
Abstract
Conformational states of the metastable drkN SH3 domain were characterized using single-molecule fluorescence techniques. Under nondenaturing conditions, two Förster resonance energy transfer (FRET) populations were observed that corresponded to a folded and an unfolded state. FRET-estimated radii of gyration and hydrodynamic radii estimated by fluorescence correlation spectroscopy of the two coexisting conformations are in agreement with previous ensemble x-ray scattering and NMR measurements. Surprisingly, when exposed to high concentrations of urea and GdmCl denaturants, the protein still exhibits two distinct FRET populations. The dominant conformation is expanded, showing a low FRET efficiency, consistent with the expected behavior of a random chain with excluded volume. However, approximately one-third of the drkN SH3 conformations showed high, nearly 100%, FRET efficiency, which is shown to correspond to denaturation-induced looped conformations that remain stable on a timescale of at least 100 μs. These loops may contain interconverting conformations that are more globally collapsed, hairpin-like, or circular, giving rise to the observed heterogeneous broadening of this population. Although the underlying mechanism of chain looping remains elusive, FRET experiments in formamide and dimethyl sulfoxide suggest that interactions between hydrophobic groups in the distal regions may play a significant role in the formation of the looped state.
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Chen Y, Wang Q, Zhang C, Li X, Gao Q, Dong C, Liu Y, Su Z. Improving the refolding efficiency for proinsulin aspart inclusion body with optimized buffer compositions. Protein Expr Purif 2016; 122:1-7. [PMID: 26826314 DOI: 10.1016/j.pep.2016.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 01/23/2016] [Accepted: 01/25/2016] [Indexed: 01/22/2023]
Abstract
Successfully recovering proinsulin's native conformation from inclusion body is the crucial step to guarantee high efficiency for insulin's manufacture. Here, two by-products of disulfide-linked oligomers and disulfide-isomerized monomers were clearly identified during proinsulin aspart's refolding through multiple analytic methods. Arginine and urea are both used to assist in proinsulin refolding, however the efficacy and possible mechanism was found to be different. The oligomers formed with urea were of larger size than with arginine. With the urea concentrations increasing from 2 M to 4 M, the content of oligomers decreased greatly, but simultaneously the refolding yield at the protein concentration of 0.5 mg/mL decreased from 40% to 30% due to the increase of disulfide-isomerized monomers. In contrast, with arginine concentrations increasing up to 1 M, the refolding yield gradually increased to 50% although the content for oligomers also decreased. Moreover, it was demonstrated that not redox pairs but only oxidant was necessary to facilitate the native disulfide bonds formation for the reduced denatured proinsulin. An oxidative agent of selenocystamine could increase the yield up to 80% in the presence of 0.5 M arginine. Further study demonstrated that refolding with 2 M urea instead of 0.5 M arginine could achieve similar yield as protein concentration is slightly reduced to 0.3 mg/mL. In this case, refolded proinsulin was directly purified through one-step of anionic exchange chromatography, with a recovery of 32% and purity up to 95%. All the results could be easily adopted in insulin's industrial manufacture for improving the production efficiency.
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Affiliation(s)
- Ying Chen
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Qi Wang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Chun Zhang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Xiunan Li
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Qiang Gao
- Novo Nordisk Research Center China, Beijing 102206, PR China
| | - Changqing Dong
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yongdong Liu
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Zhiguo Su
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
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Pavan ME, Pavan EE, Cairó FM, Pettinari MJ. Expression and refolding of the protective antigen of Bacillus anthracis: A model for high-throughput screening of antigenic recombinant protein refolding. Rev Argent Microbiol 2016; 48:5-14. [PMID: 26777581 DOI: 10.1016/j.ram.2015.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 09/17/2015] [Accepted: 10/21/2015] [Indexed: 10/22/2022] Open
Abstract
Bacillus anthracis protective antigen (PA) is a well known and relevant immunogenic protein that is the basis for both anthrax vaccines and diagnostic methods. Properly folded antigenic PA is necessary for these applications. In this study a high level of PA was obtained in recombinant Escherichia coli. The protein was initially accumulated in inclusion bodies, which facilitated its efficient purification by simple washing steps; however, it could not be recognized by specific antibodies. Refolding conditions were subsequently analyzed in a high-throughput manner that enabled nearly a hundred different conditions to be tested simultaneously. The recovery of the ability of PA to be recognized by antibodies was screened by dot blot using a coefficient that provided a measure of properly refolded protein levels with a high degree of discrimination. The best refolding conditions resulted in a tenfold increase in the intensity of the dot blot compared to the control. The only refolding additive that consistently yielded good results was L-arginine. The statistical analysis identified both cooperative and negative interactions between the different refolding additives. The high-throughput approach described in this study that enabled overproduction, purification and refolding of PA in a simple and straightforward manner, can be potentially useful for the rapid screening of adequate refolding conditions for other overexpressed antigenic proteins.
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Affiliation(s)
- María Elisa Pavan
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina; Biochemiq S.A., Laboratorio de Biología Molecular, Buenos Aires, Argentina
| | - Esteban Enrique Pavan
- Laboratorio di Tecnologie Biomediche, Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy
| | - Fabián Martín Cairó
- Biochemiq S.A., Laboratorio de Biología Molecular, Buenos Aires, Argentina; Facultad de Ciencias Veterinarias, UBA, Argentina
| | - María Julia Pettinari
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina; IQUIBICEN, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
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Fan J, Wang Z, Huang L, Shen Y. Efficient refolding of the bifunctional therapeutic fusion protein VAS-TRAIL by a triple agent solution. Protein Expr Purif 2015; 125:68-73. [PMID: 26358405 DOI: 10.1016/j.pep.2015.09.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/04/2015] [Accepted: 09/05/2015] [Indexed: 11/15/2022]
Abstract
VAS-TRAIL is a bifunctional fusion protein that combines anti-angiogenic activity with tumor-selective apoptotic activity for enhanced anti-tumor efficacy. VAS-TRAIL is expressed as inclusion body in Escherichia coli, but protein refolding is difficult to achieve and results in low yields of bioactive protein. In this study, we describe an efficient method for VAS-TRAIL refolding. The solubilization of aggregated VAS-TRAIL was achieved by a triple agent solution, which consists of an alkaline solution (pH 11.5) containing 0.4M l-arginine and 2M urea. The solubilized protein showed high purity and preserved secondary structure according to fluorescence properties. VAS-TRAIL refolding was performed through stepwise dialysis and resulted in more than 50% recovery of the soluble protein. The function of l-arginine was additive with alkaline pH, as shown by the significant improvement in refolding yield (≈30%) by l-arginine-containing solubilization solutions compared with alkaline solubilization solutions without l-arginine. The refolded VAS-TRAIL also showed β-sheet structures and the propensity for oligomerization. Bioassays showed that the refolded fusion protein exhibited the expected activities, including its apoptotic activities toward tumor and endothelial cells, which proposed its promising therapeutic potential.
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Affiliation(s)
- Jiying Fan
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai 200237, China
| | - Zhanqing Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai 200237, China
| | - Liying Huang
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai 200237, China
| | - Yaling Shen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai 200237, China.
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Zhao D, Liu Y, Zhang G, Zhang C, Li X, Wang Q, Shi H, Su Z. Interaction of arginine with protein during refolding process probed by amide H/D exchange mass spectrometry and isothermal titration calorimetry. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1854:39-45. [DOI: 10.1016/j.bbapap.2014.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 10/08/2014] [Accepted: 10/09/2014] [Indexed: 11/15/2022]
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15
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Vemula S, Dedaniya A, Thunuguntla R, Mallu MR, Parupudi P, Ronda SR. Simplified in vitro refolding and purification of recombinant human granulocyte colony stimulating factor using protein folding cation exchange chromatography. J Chromatogr A 2014; 1379:74-82. [PMID: 25576039 DOI: 10.1016/j.chroma.2014.12.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/09/2014] [Accepted: 12/18/2014] [Indexed: 02/05/2023]
Abstract
Protein folding-strong cation exchange chromatography (PF-SCX) has been employed for efficient refolding with simultaneous purification of recombinant human granulocyte colony stimulating factor (rhG-CSF). To acquire a soluble form of renatured and purified rhG-CSF, various chromatographic conditions, including the mobile phase composition and pH was evaluated. Additionally, the effects of additives such as urea, amino acids, polyols, sugars, oxidizing agents and their amalgamations were also investigated. Under the optimal conditions, rhG-CSF was efficaciously solubilized, refolded and simultaneously purified by SCX in a single step. The experimental results using ribose (2.0M) and arginine (0.6M) combination were found to be satisfactory with mass yield, purity and specific activity of 71%, ≥99% and 2.6×10(8)IU/mg respectively. Through this investigation, we concluded that the SCX refolding method was more efficient than conventional methods which has immense potential for the large-scale production of purified rhG-CSF.
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Affiliation(s)
- Sandeep Vemula
- K L E F University, Centre for Bioprocess Technology, Department of Biotechnology, Guntur 522 502, Andhra Pradesh, India
| | - Akshay Dedaniya
- K L E F University, Centre for Bioprocess Technology, Department of Biotechnology, Guntur 522 502, Andhra Pradesh, India
| | - Rahul Thunuguntla
- K L E F University, Centre for Bioprocess Technology, Department of Biotechnology, Guntur 522 502, Andhra Pradesh, India
| | - Maheswara Reddy Mallu
- K L E F University, Centre for Bioprocess Technology, Department of Biotechnology, Guntur 522 502, Andhra Pradesh, India
| | - Pavani Parupudi
- Andhra University, College of Engineering, Visakhapatnam 530 003, Andhra Pradesh, India
| | - Srinivasa Reddy Ronda
- K L E F University, Centre for Bioprocess Technology, Department of Biotechnology, Guntur 522 502, Andhra Pradesh, India.
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Cielens I, Jackevica L, Strods A, Kazaks A, Ose V, Bogans J, Pumpens P, Renhofa R. Mosaic RNA phage VLPs carrying domain III of the West Nile virus E protein. Mol Biotechnol 2014; 56:459-69. [PMID: 24570176 DOI: 10.1007/s12033-014-9743-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The virus-neutralising domain III (DIII) of the West Nile virus glycoprotein E was exposed on the surface of RNA phage AP205 virus-like particles (VLPs) in mosaic form. For this purpose, a 111 amino acid sequence of DIII was added via amber or opal termination codons to the C-terminus of the AP205 coat protein, and mosaic AP205-DIII VLPs were generated by cultivation in amber- or opal-suppressing Escherichia coli strains. After extensive purification to 95 % homogeneity, mosaic AP205-DIII VLPs retained up to 11-16 % monomers carrying DIII domains. The DIII domains appeared on the VLP surface because they were fully accessible to anti-DIII antibodies. Immunisation of BALB/c mice with AP205-DIII VLPs resulted in the induction of specific anti-DIII antibodies, of which the level was comparable to that of the anti-AP205 antibodies generated against the VLP carrier. The AP205-DIII-induced anti-DIII response was represented by a significant fraction of IgG2 isotype antibodies, in contrast to parallel immunisation with the DIII oligopeptide, which failed to induce IgG2 isotype antibodies. Formulation of AP-205-DIII VLPs in alum adjuvant stimulated the level of the anti-DIII response, but did not alter the fraction of IgG2 isotype antibodies. Mosaic AP205-DIII VLPs could be regarded as a promising prototype of a putative West Nile vaccine.
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Affiliation(s)
- Indulis Cielens
- Latvian Biomedical Research and Study Centre, Ratsupites Street 1, Riga, 1067, Latvia
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Saremirad P, Wood JA, Zhang Y, Ray AK. Oxidative protein refolding on size exclusion chromatography at high loading concentrations: Fundamental studies and mathematical modeling. J Chromatogr A 2014; 1370:147-55. [DOI: 10.1016/j.chroma.2014.10.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/12/2014] [Accepted: 10/14/2014] [Indexed: 10/24/2022]
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Saremirad P, Wood JA, Zhang Y, Ray AK. Multi-variable operational characteristic studies of on-column oxidative protein refolding at high loading concentrations. J Chromatogr A 2014; 1359:70-5. [DOI: 10.1016/j.chroma.2014.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/08/2014] [Accepted: 07/08/2014] [Indexed: 10/25/2022]
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Facile purification of Escherichia coli expressed tag-free recombinant human tumor necrosis factor alpha from supernatant. Protein Expr Purif 2014; 95:195-203. [DOI: 10.1016/j.pep.2013.12.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Revised: 12/24/2013] [Accepted: 12/26/2013] [Indexed: 01/09/2023]
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Qi W, Zeng Y, Orgel S, Francon A, Kim JH, Randolph TW, Carpenter JF, Russell Middaugh C. Preformulation Study of Highly Purified Inactivated Polio Vaccine, Serotype 3. J Pharm Sci 2014; 103:140-51. [DOI: 10.1002/jps.23801] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Revised: 10/23/2013] [Accepted: 11/06/2013] [Indexed: 01/13/2023]
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A novel aqueous two phase assisted platform for efficient removal of process related impurities associated with E. coli based biotherapeutic protein products. J Chromatogr A 2013; 1307:49-57. [DOI: 10.1016/j.chroma.2013.07.085] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 07/19/2013] [Accepted: 07/20/2013] [Indexed: 11/22/2022]
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Zheng H, Miyakawa T, Sawano Y, Yamagoe S, Tanokura M. Expression, high-pressure refolding and purification of human leukocyte cell-derived chemotaxin 2 (LECT2). Protein Expr Purif 2013; 88:221-9. [DOI: 10.1016/j.pep.2013.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 12/18/2012] [Accepted: 01/08/2013] [Indexed: 11/17/2022]
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Bade PD, Kotu SP, Rathore AS. Optimization of a refolding step for a therapeutic fusion protein in the quality by design (QbD) paradigm. J Sep Sci 2012; 35:3160-9. [DOI: 10.1002/jssc.201200476] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 07/09/2012] [Accepted: 07/11/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Pratap D. Bade
- Department of Chemical Engineering; Indian Institute of Technology Delhi; Hauz Khas New Delhi India
| | - Susmitha P. Kotu
- Department of Chemical Engineering; Indian Institute of Technology Delhi; Hauz Khas New Delhi India
| | - Anurag S. Rathore
- Department of Chemical Engineering; Indian Institute of Technology Delhi; Hauz Khas New Delhi India
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Wang L, Wang C, Geng X. Fast preparation of recombinant human stem cell factor from inclusion bodies using different hydrophobic interaction chromatographic columns. Se Pu 2012; 29:36-41. [PMID: 21568213 DOI: 10.3724/sp.j.1123.2011.00036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A method was developed to increase the recovery of recombinant human stem cell factor (rhSCF) from inclusion bodies using high performance hydrophobic interaction chromatography (HPHIC). The target protein was first solubilized in 8.0 mol/L urea solution, and was purified and refolded simultaneously by HPHIC with different chromatographic cakes. Experimental conditions, such as the ligand structures of stationary phase and the composition of mobile phase, were optimized. Under the optimal conditions, high mass recoveries and specific activities of rhSCF were acquired, the purities of rhSCF were above 95.5%, and the mass recoveries of rhSCF were above 49.6%. The final product was also verified as monomer by size exclusion chromatography and matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF-MS). These results provided further evidence that HPHIC is an effective tool in the refolding and purification of recombinant proteins.
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Affiliation(s)
- Lili Wang
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education, Institute of Modern Separation Science, Northwest University, Shaanxi Key Laboratory of Modern Separation Science, Xi'an 710069, China.
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Okumura M, Shimamoto S, Hidaka Y. A chemical method for investigating disulfide-coupled peptide and protein folding. FEBS J 2012; 279:2283-95. [PMID: 22487262 DOI: 10.1111/j.1742-4658.2012.08596.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Investigations of protein folding have largely involved studies using disulfide-containing proteins, as disulfide-coupled folding of proteins permits the folding intermediates to be trapped and their conformations determined. Over the last decade, a combination of new biotechnical and chemical methodology has resulted in a remarkable acceleration in our understanding of the mechanism of disulfide-coupled protein folding. In particular, expressed protein ligation, a combination of native chemical ligation and an intein-based approach, permits specifically labeled proteins to be easily produced for studies of protein folding using biophysical methods, such as NMR spectroscopy and X-ray crystallography. A method for regio-selective formation of disulfide bonds using chemical procedures has also been established. This strategy is particularly relevant for the study of disulfide-coupled protein folding, and provides us not only with the native conformation, but also the kinetically trapped topological isomer with native disulfide bonds. Here we review recent developments and applications of biotechnical and chemical methods to investigations of disulfide-coupled peptide and protein folding. Chemical additives designed to accelerate correct protein folding and to avoid non-specific aggregation are also discussed.
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Affiliation(s)
- Masaki Okumura
- Faculty of Science and Engineering, Kinki University, Higashi-osaka, Osaka, Japan
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26
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Gilmartin AA, Lamp B, Rümenapf T, Persson MA, Rey FA, Krey T. High-level secretion of recombinant monomeric murine and human single-chain Fv antibodies from Drosophila S2 cells. Protein Eng Des Sel 2012; 25:59-66. [PMID: 22160929 PMCID: PMC3258843 DOI: 10.1093/protein/gzr058] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 11/11/2011] [Accepted: 11/14/2011] [Indexed: 02/05/2023] Open
Abstract
Single-chain variable fragment (scFvs) antibodies are small polypeptides (∼26 kD) containing the heavy (V(H)) and light (V(L)) immunoglobulin domains of a parent antibody connected by a flexible linker. In addition to being frequently used in diagnostics and therapy for an increasing number of human diseases, scFvs are important tools for structural biology as crystallization chaperones. Although scFvs can be expressed in many different organisms, the expression level of an scFv strongly depends on its particular amino acid sequence. We report here a system allowing for easy and efficient cloning of (i) scFvs selected by phage display and (ii) individual heavy and light chain sequences from hybridoma cDNA into expression plasmids engineered for secretion of the recombinant fragment produced in Drosophila S2 cells. We validated the method by producing five scFvs derived from human and murine parent antibodies directed against various antigens. The production yields varied between 5 and 12 mg monomeric scFv per liter of supernatant, indicating a relative independence on the individual sequences. The recombinant scFvs bound their cognate antigen with high affinity, comparable with the parent antibodies. The suitability of the produced recombinant fragments for structural studies was demonstrated by crystallization and structure determination of one of the produced scFvs, derived from a broadly neutralizing antibody against the major glycoprotein E2 of the hepatitis C virus. Structural comparison with the Protein Data Bank revealed the typical spatial organization of V(H) and V(L) domains, further validating the here-reported expression system.
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Affiliation(s)
- Allissia A. Gilmartin
- Départment de Virologie, Institut Pasteur, Unité de Virologie Structurale, CNRS URA 3015, Paris, France
| | - Benjamin Lamp
- Faculty of Veterinary Medicine, Institute of Virology, Justus-Liebig-University, Giessen, Germany
| | - Till Rümenapf
- Faculty of Veterinary Medicine, Institute of Virology, Justus-Liebig-University, Giessen, Germany
| | - Mats A.A. Persson
- Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Félix A. Rey
- Départment de Virologie, Institut Pasteur, Unité de Virologie Structurale, CNRS URA 3015, Paris, France
| | - Thomas Krey
- Départment de Virologie, Institut Pasteur, Unité de Virologie Structurale, CNRS URA 3015, Paris, France
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27
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Su Z, Lu D, Liu Z. Refolding of inclusion body proteins from E. coli. METHODS OF BIOCHEMICAL ANALYSIS 2011; 54:319-38. [PMID: 21954784 DOI: 10.1002/9780470939932.ch13] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhiguo Su
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
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28
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Synergistic effects of detergents and organic solvents on protein refolding: Control of aggregation and folding rates. J Biosci Bioeng 2011; 111:10-5. [DOI: 10.1016/j.jbiosc.2010.08.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Revised: 08/20/2010] [Accepted: 08/23/2010] [Indexed: 11/17/2022]
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29
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Sun W, Dai X, Zheng Y, Wang J, Hou L, Du J, Hu HG. On-column refolding purification of DT389-hIL13 recombinant protein expressed in Escherichia coli. Protein Expr Purif 2011; 75:83-8. [DOI: 10.1016/j.pep.2010.09.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Revised: 09/09/2010] [Accepted: 09/12/2010] [Indexed: 12/01/2022]
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30
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High-yield expression of human vascular endothelial growth factor VEGF165 in Escherichia coli and purification for therapeutic applications. Protein Expr Purif 2010; 72:184-93. [DOI: 10.1016/j.pep.2010.03.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 03/11/2010] [Accepted: 03/15/2010] [Indexed: 11/18/2022]
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31
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Fraga TR, Chura-Chambi RM, Gonçales AP, Morais ZM, Vasconcellos SA, Morganti L, Martins EA. Refolding of the recombinant protein OmpA70 from Leptospira interrogans from inclusion bodies using high hydrostatic pressure and partial characterization of its immunological properties. J Biotechnol 2010; 148:156-62. [DOI: 10.1016/j.jbiotec.2010.04.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Revised: 02/04/2010] [Accepted: 04/21/2010] [Indexed: 10/19/2022]
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32
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Expression and purification of an anti-clenbuterol single chain Fv antibody in Escherichia coli. Protein Expr Purif 2010; 72:26-31. [DOI: 10.1016/j.pep.2010.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 02/23/2010] [Accepted: 03/01/2010] [Indexed: 11/23/2022]
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33
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Annathur GV, Buckley JJ, Muthurania K, Ramasubramanyan N. Application of arginine as an efficient eluent in cation exchange chromatographic purification of a PEGylated peptide. J Chromatogr A 2010; 1217:3783-93. [DOI: 10.1016/j.chroma.2010.04.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 04/01/2010] [Accepted: 04/09/2010] [Indexed: 11/27/2022]
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34
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Development of a rapid, high-efficiency, scalable refold for neurotrophin-4. Biotechnol Appl Biochem 2010; 56:27-34. [PMID: 20408815 DOI: 10.1042/ba20090306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A scalable refold for human neurotrophin-4 was developed as part of a manufacturing process required for the production of supplies for preclinical and clinical studies. The process redox system, chaotrope, solubilization additives, pH, temperature and protein concentration were optimized. The limited availability of suitable material for experimentation during concurrent downstream process development led to the approach described in the present paper: a combination of OFAT (one factor at a time) and multivariate DOE (design of experiments) to identify appropriate conditions. The optimized refold conditions included the use of sulfonated protein, raw materials utilized in other process operations and an inexpensive redox system. The conditions were found to be robust and were demonstrated from the millilitre scale to the 300 litre pilot scale. A process control procedure that utilized an RPC (reversed-phase chromatography) quantitative assay to monitor the percentage conversion into oxidized protein was developed. Refold conversions of 80-90% were obtained under ambient temperature and atmospheric conditions, with reaction times of approx. 18 h.
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