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Tohidkia MR, Sepehri M, Khajeh S, Barar J, Omidi Y. Improved Soluble ScFv ELISA Screening Approach for Antibody Discovery Using Phage Display Technology. SLAS DISCOVERY 2017; 22:1026-1034. [PMID: 28346811 DOI: 10.1177/2472555217701059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Phage display technology (PDT) is a powerful tool for the isolation of recombinant antibody (Ab) fragments. Using PDT, target molecule-specific phage-Ab clones are enriched through the "biopanning" process. The individual specific binders are screened by the monoclonal scFv enzyme-linked immunosorbent assay (ELISA) that may associate with inevitable false-negative results. Thus, in this study, three strategies were investigated for optimization of the scFvs screening using Tomlinson I and J libraries, including (1) optimizing the expression of functional scFvs, (2) improving the sensitivity of ELISA, and (3) preparing different samples containing scFvs. The expression of all scFv Abs was significantly enhanced when scFv clones were cultivated in the terrific broth (TB) medium at the optimum temperature of 30 °C. The protein A-conjugated with horseradish peroxidase (HRP) was found to be a well-suited reagent for the detection of Ag-bound scFvs in comparison with either anti-c-myc Ab or the mixing procedure. Based on our findings, it seems there is no universal media supplement for an improved expression of all scFvs derived from both Tomlinson I and J libraries. We thus propose that expression of scFv fragments in a microplate scale is largely dependent on a variety of parameters, in particular the scFv clones and relevant sequences.
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Affiliation(s)
- Mohammad R Tohidkia
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Sepehri
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.,2 Department of Biochemistry, Higher Education Institute of Rab-Rashid, Tabriz, Iran
| | - Shirin Khajeh
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jaleh Barar
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.,3 Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yadollah Omidi
- 1 Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran.,3 Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Faridi S, Satyanarayana T. Characteristics of recombinant α-carbonic anhydrase of polyextremophilic bacterium Bacillus halodurans TSLV1. Int J Biol Macromol 2016; 89:659-68. [DOI: 10.1016/j.ijbiomac.2016.05.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 05/06/2016] [Accepted: 05/07/2016] [Indexed: 11/25/2022]
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Secretion of recombinant thermo-alkali-stable endoxylanase of polyextremophilic Bacillus halodurans TSEV1 and its utility in generating xylooligosaccharides from renewable agro-residues. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.08.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rigi G, Mohammadi SG, Arjomand MR, Ahmadian G, Noghabi KA. Optimization of extracellular truncated staphylococcal protein A expression inEscherichia coliBL21 (DE3). Biotechnol Appl Biochem 2014; 61:217-25. [DOI: 10.1002/bab.1157] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 09/07/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Garshasb Rigi
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Samira Ghaed Mohammadi
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Maryam Rezaei Arjomand
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Gholamreza Ahmadian
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
| | - Kambiz Akbari Noghabi
- Department of Molecular Genetics; National Institute of Genetic Engineering and Biotechnology (NIGEB); Tehran Iran
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Liu SL, Du K, Chen WZ, Liu G, Xing M. Effective approach to greatly enhancing selective secretion and expression of three cytoplasmic enzymes in Escherichia coli through synergistic effect of EDTA and lysozyme. J Ind Microbiol Biotechnol 2012; 39:1301-7. [PMID: 22569922 DOI: 10.1007/s10295-012-1136-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 04/18/2012] [Indexed: 10/28/2022]
Abstract
An effective approach to greatly enhancing the selective secretion and expression of recombinant cytoplasmic enzymes in Escherichia coli was successfully developed through the synergistic effect of ethylenediaminetetraacetate (EDTA) and lysozyme. The method was applied to two endoglucanases (EGs) and an amylase. The optimal culture conditions of temperature and concentration of isopropyl-β-D: -1-thiogalactopyranoside (IPTG) were 23-30 °C and 0.2 mM, respectively, under which the three enzymes could be expressed in active form. Among all the chemicals tested, EDTA was found to be most suitable for enhancing the secretion of EG-I-1A into the medium. Addition of lysozyme alone had little influence on the secretion and expression. In contrast, on the basis of the addition of 5 g EDTA/L at the induction time of 12 h, the simultaneous addition of 0.15 g lysozyme/L further significantly increased the secretion and expression of the three enzymes, demonstrating the synergistic effect of EDTA and lysozyme. The production of EG-I-1A in the culture medium by adding 5 g EDTA/L and 0.15 g lysozyme/L under the optimal culture conditions of 23 °C and 0.2 mM IPTG was over 260-fold higher than that without EDTA and lysozyme under the standard conditions of 37 °C and 1 mM IPTG. In summary, the advantage of this novel cultivation approach for secretion was that not only did it selectively enhance the secretion of the proteins of interest, but also greatly increased the expression of the three enzymes by over 80 %.
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Affiliation(s)
- Sen-Lin Liu
- Shenzhen Key Laboratory for Microbial Gene Engineering, College of Life Science, Shenzhen University, Shenzhen 518060, People's Republic of China.
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Wargacki AJ, Leonard E, Win MN, Regitsky DD, Santos CNS, Kim PB, Cooper SR, Raisner RM, Herman A, Sivitz AB, Lakshmanaswamy A, Kashiyama Y, Baker D, Yoshikuni Y. An engineered microbial platform for direct biofuel production from brown macroalgae. Science 2012; 335:308-13. [PMID: 22267807 DOI: 10.1126/science.1214547] [Citation(s) in RCA: 389] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Prospecting macroalgae (seaweeds) as feedstocks for bioconversion into biofuels and commodity chemical compounds is limited primarily by the availability of tractable microorganisms that can metabolize alginate polysaccharides. Here, we present the discovery of a 36-kilo-base pair DNA fragment from Vibrio splendidus encoding enzymes for alginate transport and metabolism. The genomic integration of this ensemble, together with an engineered system for extracellular alginate depolymerization, generated a microbial platform that can simultaneously degrade, uptake, and metabolize alginate. When further engineered for ethanol synthesis, this platform enables bioethanol production directly from macroalgae via a consolidated process, achieving a titer of 4.7% volume/volume and a yield of 0.281 weight ethanol/weight dry macroalgae (equivalent to ~80% of the maximum theoretical yield from the sugar composition in macroalgae).
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Affiliation(s)
- Adam J Wargacki
- Bio Architecture Lab, 604 Bancroft Way, Suite A, Berkeley, CA 94710, USA
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Hamza A, Piao YL, Kim MS, Choi CH, Zhan CG, Cho H. Insight into the binding of the wild type and mutated alginate lyase (AlyVI) with its substrate: a computational and experimental study. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1814:1739-47. [PMID: 21945375 DOI: 10.1016/j.bbapap.2011.08.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 08/10/2011] [Accepted: 08/30/2011] [Indexed: 10/17/2022]
Abstract
The homology model of the wild type alginate lyase (AlyVI) marine bacterium Vibrio sp. protein, was built using the crystal structure of the Family 7 alginate lyase from Sphingomonas sp. A1. To rationalize the observed structure-affinity relationships of aliginate lyase alyVI with its (GGG) substrate, molecular docking, MD imulations and binding free energy calculations followed by site-directed mutagenesis and alyVI activity assays were carried out. Per-residue decomposition of the (GGG) binding energy revealed that the most important contributions were from polar and charged residues, such as Asn138, Arg143, Asn217, and Lys308, while van der Waals interactions were responsible for binding with the catalytic His200 and Tyr312 residues. The mutants H200A, K308A, Y312A, Y312F, and W165A were found to be inactive or almost inactive. However, the catalytic efficiency (k(cat)/K(m)) of the double mutant L224V/D226G increased by two-fold compared to the wild type enzyme. This first structural model with its substrate binding mode and the agreement with experimental results provide a suitable base for the future rational design of new mutated alyVI structures with improved catalytic activity.
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Affiliation(s)
- Adel Hamza
- Research Centre for Resistant Cells, Chosun University Medical School, Gwangju, South Korea
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Liu G, Yue L, Chi Z, Yu W, Chi Z, Madzak C. The surface display of the alginate lyase on the cells of Yarrowia lipolytica for hydrolysis of alginate. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2009; 11:619-626. [PMID: 19165542 DOI: 10.1007/s10126-009-9178-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2008] [Accepted: 12/24/2008] [Indexed: 05/27/2023]
Abstract
The alginate lyase structural gene (AlyVI gene) was amplified from plasmid pET24-ALYVI carrying the alginate lyase gene from the marine bacterium Vibrio sp. QY101 which is a pathogen of Laminaria sp. When the gene was cloned into the multiple cloning site of the surface display vector pINA1317-YlCWP110 and expressed in cells of Yarrowia lipolytica, the cells displaying the alginate lyase could form clear zone on the plate containing sodium alginate, indicating that they had high alginate lyase activity. The cells displaying alginate lyase can be used to hydrolyze poly-beta-D: -mannuronate (M) and poly-alpha-L: -guluronate (G) and sodium alginate to produce different lengths of oligosaccharides (more than pentasaccharides). This is the first report that the yeast cells displaying alginate lyase were used to produce different lengths of oligosaccharides from alginate.
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Affiliation(s)
- Guanglei Liu
- Unesco Chinese Center of Marine Biotechnology, Ocean University of China, Yushan Road, No. 5, Qingdao, China
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Ma LY, Chi ZM, Li J, Wu LF. Overexpression of alginate lyase of Pseudoalteromonas elyakovii in Escherichia coli, purification, and characterization of the recombinant alginate lyase. World J Microbiol Biotechnol 2007. [DOI: 10.1007/s11274-007-9443-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dincq S, Bosman F, Buyse MA, Degrieck R, Celis L, de Boer M, Van Doorsselaere V, Sablon E. Expression and purification of monospecific and bispecific recombinant antibody fragments derived from antibodies that block the CD80/CD86-CD28 costimulatory pathway. Protein Expr Purif 2001; 22:11-24. [PMID: 11388794 DOI: 10.1006/prep.2001.1417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The development of recombinant techniques for rapid cloning, expression, and characterization of cDNAs encoding antibody (Ab) subunits has revolutionized the field of antibody engineering. By fusion to heterologous protein domains, chain shuffling, or inclusion of self-assembly motifs, novel molecules such as bispecific Abs can be generated that possess the subset of functional properties designed to fit the intended application. We describe the engineering of Ab fragments produced in bacteria for blocking the CD28-CD80/CD86 costimulatory interaction in order to induce tolerance against transplanted organs. We designed single-chain Fv antibodies, monospecific and bispecific diabodies, and a bispecific tetravalent antibody (BiTAb) molecule directed against the CD80 and/or CD86 costimulatory molecules. These recombinant Ab molecules were expressed in Escherichia coli, followed by purification and evaluation for specific interaction with their respective antigen in an enzyme-linked immunosorbent assay (ELISA). A specific sandwich ELISA confirmed the bispecificity of the bispecific diabodies and the BiTAb.
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MESH Headings
- Animals
- Antibodies, Bispecific/chemistry
- Antibodies, Bispecific/immunology
- Antibodies, Bispecific/isolation & purification
- Antibodies, Bispecific/pharmacology
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/isolation & purification
- Antibodies, Monoclonal/pharmacology
- Antibody Specificity
- Antigens, CD/immunology
- Antigens, CD/metabolism
- B-Lymphocytes/drug effects
- B-Lymphocytes/immunology
- B-Lymphocytes/metabolism
- B7-1 Antigen/immunology
- B7-1 Antigen/metabolism
- B7-2 Antigen
- Binding Sites, Antibody
- Blotting, Western
- CD28 Antigens/immunology
- CD28 Antigens/metabolism
- Cell Line
- Enzyme-Linked Immunosorbent Assay
- Flow Cytometry
- Immune Tolerance/drug effects
- Immune Tolerance/immunology
- Immunoglobulin Fragments/chemistry
- Immunoglobulin Fragments/immunology
- Immunoglobulin Fragments/isolation & purification
- Immunoglobulin Fragments/pharmacology
- Immunoglobulin Variable Region/chemistry
- Immunoglobulin Variable Region/immunology
- Immunoglobulin Variable Region/isolation & purification
- Immunoglobulin Variable Region/pharmacology
- Membrane Glycoproteins/immunology
- Membrane Glycoproteins/metabolism
- Mice
- Models, Molecular
- Protein Engineering
- Recombinant Proteins/chemistry
- Recombinant Proteins/immunology
- Recombinant Proteins/isolation & purification
- Recombinant Proteins/pharmacology
- Signal Transduction/drug effects
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Affiliation(s)
- S Dincq
- Department of Microbiology, Innogenetics NV, Industriepark Zwijnaarde 7, Box 4, B-9052 Gent, Belgium.
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Yang J, Moyana T, MacKenzie S, Xia Q, Xiang J. One hundred seventy-fold increase in excretion of an FV fragment-tumor necrosis factor alpha fusion protein (sFV/TNF-alpha) from Escherichia coli caused by the synergistic effects of glycine and triton X-100. Appl Environ Microbiol 1998; 64:2869-74. [PMID: 9687443 PMCID: PMC106785 DOI: 10.1128/aem.64.8.2869-2874.1998] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
To target tumor necrosis factor alpha (TNF-alpha) to tumor cells, recombinant DNA techniques were used to construct and express the fused gene VKLVH-TNF-alpha, which encodes the secreted form of single-chain fusion protein sFV/TNF-alpha in Escherichia coli. sFV/TNF-alpha was secreted into the culture medium and purified by affinity chromatography. The production of the fusion protein in the culture medium under the optimal conditions of 30 degrees C and 37 micromol of isopropyl-beta-D-thiogalactopyranoside (IPTG) per liter was 16- and 5-fold higher than that under the standard conditions of 37 degrees C and 1 mmol of IPTG per liter. Fusion protein excretion into culture medium with 2% glycine, 1% Triton X-100, or both of these two chemicals was either 14-, 38-, or 170-fold higher, respectively than that without the two chemicals. The final yield of sFV/TNF-alpha was estimated to be 50 mg/liter. The loss of integrity of the cellular membrane may be a potential mechanism for enhancement of fusion protein production and excretion by treatment with glycine and Triton X-100. This study thus provides a practical, large-scale method for more efficient production of the heterologous fusion protein sFV/TNF-alpha in E. coli by using glycine and Triton X-100.
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Affiliation(s)
- J Yang
- Departments of Microbiology, Saskatoon Cancer Center, College of Medicine, University of Saskatchewan, Canada
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