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Pham DN, Linova MY, Smith WK, Brown H, Elhanafi D, Fan J, Lavoie J, Woodley JM, Carbonell RG. Novel multimodal cation-exchange membrane for the purification of a single-chain variable fragment from Pichia pastoris supernatant. J Chromatogr A 2024; 1718:464682. [PMID: 38341900 DOI: 10.1016/j.chroma.2024.464682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/13/2024]
Abstract
A novel salt-tolerant cation-exchange membrane, prepared with a multimodal ligand, 2-mercaptopyridine-3-carboxylic acid (MMC-MPCA), was examined for its purification properties in a bind-and-elute mode from the high conductivity supernatant of a Pichia pastoris fermentation producing and secreting a single-chain variable fragment (scFv). If successful, this approach would eliminate the need for a buffer exchange prior to product capture by ion-exchange. Two fed-batch fermentations of Pichia pastoris resulted in fermentation supernatants reaching an scFv titer of 395.0 mg/L and 555.7 mg/L, both with a purity of approximately 83 %. The MMC-MPCA membrane performance was characterized in terms of pH, residence time (RT), scFv load, and scFv concentration to identify the resulting dynamic binding capacity (DBC), yield, and purity achieved under optimal conditions. The MMC-MPCA membrane exhibited the highest DBC of 39.06 mg/mL at pH 5.5, with a residence time of 1 min, while reducing the pH below 5.0 resulted in a significant decrease of the DBC to around 2.5 mg/mL. With almost no diffusional limitations, reducing the RT from 2 to 0.2 min did not negatively impact the DBC of the MMC-MPCA membrane, resulting in a significant improvement in productivity of up to 180 mg/mL/min at 0.2 min RT. Membrane fouling was observed when reusing the membranes at 0.2 and 0.5 min RT, likely due to the enhanced adsorption of impurities on the membrane. Changing the amount of scFv loaded onto the membrane column did not show any changes in yield, instead a 10-20 % loss of scFv was observed, which suggested that some of the produced scFv were fragmented or had aggregated. When performing the purification under the optimized conditions, the resulting purity of the product improved from 83 % to approximately 92-95 %.
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Affiliation(s)
- Dan N Pham
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Marina Y Linova
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - William K Smith
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Hunter Brown
- Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Driss Elhanafi
- Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Jinxin Fan
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA.
| | - Joseph Lavoie
- Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7905, USA
| | - John M Woodley
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
| | - Ruben G Carbonell
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA; Biomanufacturing Training and Education Center (BTEC), North Carolina State University, Raleigh, NC 27695-7905, USA.
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Antibody glycosylation: impact on antibody drug characteristics and quality control. Appl Microbiol Biotechnol 2020; 104:1905-1914. [DOI: 10.1007/s00253-020-10368-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/02/2020] [Accepted: 01/09/2020] [Indexed: 12/21/2022]
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Diaz Arias CA, Molino JVD, de Araújo Viana Marques D, Queiroz Maranhão A, Abdalla Saes Parra D, Pessoa Junior A, Converti A. Influence of carbon source on cell size and production of anti LDL (-) single-chain variable fragment by a recombinant Pichia pastoris strain. Mol Biol Rep 2019; 46:3257-3264. [PMID: 31073913 DOI: 10.1007/s11033-019-04785-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/22/2019] [Indexed: 10/26/2022]
Abstract
The aim of this work was to study the effect of the carbon source (glycerol, sucrose, glucose or a sucrose/glucose mixture) on the production of the anti LDL (-) single-chain variable fragment (scFv) by the recombinant Pichia pastoris SMD 1168 strain as well as on the cell size. The use of glucose as a carbon source in the growth phase led to a remarkable increase in cell size compared with glycerol, while the smallest cells were obtained with sucrose likely due to the occurrence of an energetic stress. The scFv concentration seemed to be related to cell number rather than to cell concentration, which in its turn showed no significant dependence on the carbon source. Yeast cells grown on sucrose had a mean diameter (0.736 ± 0.097 μm) about 35% shorter than those grown on glucose and allowed for the highest final concentration of the scFv antibody fragment (93.7 ± 0.2 mg/L). These results demonstrate that sucrose is the best carbon source for the expression of such an antibody fragment by the recombinant P. pastoris strain, which may be very useful for the diagnostic analysis of the so-called "bad cholesterol".
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Affiliation(s)
- Cesar Andres Diaz Arias
- Department of Biochemical and Pharmaceutical Technology, University of São Paulo, Prof. Lineu Prestes 580, Bloco 16, São Paulo, SP, 05508-000, Brazil
| | - João Vitor Dutra Molino
- Department of Biochemical and Pharmaceutical Technology, University of São Paulo, Prof. Lineu Prestes 580, Bloco 16, São Paulo, SP, 05508-000, Brazil
| | | | - Andrea Queiroz Maranhão
- Department of Cell Biology, Brasilia University, Campus Universitario Darcy RibeiroBloco K, 2 pavimento, Asa Norte, Brasília, DF, 70910-900, Brazil
| | - Dulcineia Abdalla Saes Parra
- Department of Clinical and Toxicological Analyses, University of São Paulo, Prof. Lineu Prestes, 580, Bloco 18, São Paulo, SP, 05508-000, Brazil
| | - Adalberto Pessoa Junior
- Department of Biochemical and Pharmaceutical Technology, University of São Paulo, Prof. Lineu Prestes 580, Bloco 16, São Paulo, SP, 05508-000, Brazil
| | - Attilio Converti
- Department of Civil, Chemical and Environmental Engineering, Pole of Chemical Engineering, University of Genoa, Via Opera Pia 15, 16145, Genoa, Italy.
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Shibui T, Hara H. A new type of gene-disruption cassette with a rescue gene for Pichia pastoris. Biotechnol Prog 2017; 33:1201-1208. [DOI: 10.1002/btpr.2541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 07/07/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Tatsuro Shibui
- Food Biotechnology Laboratory, School of Food Sciences; Nippon Veterinary and Life Science University, 1-7-1 Kyounamcho; Musashinoshi Tokyo 180-8602 Japan
| | - Hiroyoshi Hara
- Food Biotechnology Laboratory, School of Food Sciences; Nippon Veterinary and Life Science University, 1-7-1 Kyounamcho; Musashinoshi Tokyo 180-8602 Japan
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Production of a soluble single-chain variable fragment antibody against okadaic acid and exploration of its specific binding. Anal Biochem 2016; 503:21-7. [PMID: 26772159 DOI: 10.1016/j.ab.2015.12.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 12/09/2015] [Accepted: 12/29/2015] [Indexed: 11/21/2022]
Abstract
Okadaic acid is a lipophilic marine algal toxin commonly responsible for diarrhetic shellfish poisoning (DSP). Outbreaks of DSP have been increasing and are of worldwide public health concern; therefore, there is a growing demand for more rapid, reliable, and economical analytical methods for the detection of this toxin. In this study, anti-okadaic acid single-chain variable fragment (scFv) genes were prepared by cloning heavy and light chain genes from hybridoma cells, followed by fusion of the chains via a linker peptide. An scFv-pLIP6/GN recombinant plasmid was constructed and transformed into Escherichia coli for expression, and the target scFv was identified with IC-CLEIA (chemiluminescent enzyme immunoassay). The IC15 was 0.012 ± 0.02 μg/L, and the IC50 was 0.25 ± 0.03 μg/L. The three-dimensional structure of the scFv was simulated with computer modeling, and okadaic acid was docked to the scFv model to obtain a putative structure of the binding complex. Two predicted critical amino acids, Ser32 and Thr187, were then mutated to verify this theoretical model. Both mutants exhibited significant loss of binding activity. These results help us to understand this specific scFv-antigen binding mechanism and provide guidance for affinity maturation of the antibody in vitro. The high-affinity scFv developed here also has potential for okadaic acid toxin detection.
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Dong JX, Xie X, Hu DW, Chen SC, He YS, Beier RC, Shen YD, Sun YM, Xu ZL, Wang H, Yang JY. Codon modification for the DNA sequence of a single-chain Fv antibody against clenbuterol and expression in Pichia pastoris. Appl Microbiol Biotechnol 2013; 98:3679-89. [PMID: 24190495 DOI: 10.1007/s00253-013-5324-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/08/2013] [Accepted: 10/09/2013] [Indexed: 10/26/2022]
Abstract
The expression efficiency was improved for the recombinant single-chain variable fragment (scFv) against clenbuterol (CBL) obtained from mouse and expressed in the methylotrophic yeast Pichia pastoris GS115, by redesigning and synthesizing the DNA sequence encoding for CBL-scFv based on the codon bias of P. pastoris. The codons encoding 124 amino acids were optimized, in which a total of 156 nucleotides were changed, and the G+C ratio was simultaneously decreased from 53 to 47.2 %. Under the optimized expression conditions, the yield of the recombinant CBL-scFv (41 kDa) antibodies was 0.223 g L⁻¹ in shake culture. Compared to the non-optimized control, the expression level of the optimized recombinant CBL-scFv based on preferred codons in P. pastoris demonstrated a 2.35-fold higher yield. Furthermore, the recombinant CBL-scFv was purified by Ni-NTA column chromatography, and the purity was 95 %. The purified CBL-scFv showed good CBL recognition by a competitive indirect enzyme-linked immunoassay. The average concentration required for 50 % inhibition of binding and the limit of detection for the assay were 5.82 and 0.77 ng mL⁻¹, respectively.
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Affiliation(s)
- Jie-Xian Dong
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, Guangdong Province, 510642, People's Republic of China
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Maeng BH, Choi J, Sa YS, Shin JH, Kim YH. Functional expression of recombinant anti-BNP scFv in methylotrophic yeast Pichia pastoris and application as a recognition molecule in electrochemical sensors. World J Microbiol Biotechnol 2011; 28:1027-34. [PMID: 22805824 DOI: 10.1007/s11274-011-0901-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Accepted: 09/16/2011] [Indexed: 12/24/2022]
Abstract
Recent studies have revealed the potential of B-type natriuretic peptide (BNP) as a good prognostic marker for patients with heart failure. Antibodies against BNP are expected to be usefully employed in the diagnosis of heart failures. We established a more efficient method to produce functional anti-BNP, single chain variable fragment (scFv) using a eukaryotic expression system of Pichia pastoris. Although analysis of the N-terminal (NT) sequence of the expressed anti-BNP scFv indicated that the two Ste13 sites of the secreted anti-BNP scFv were not cleaved, the specificity of anti-BNP scFv was not affected significantly. The binding activity of anti-BNP scFv against other antigens, against four other antigens, NT probrain peptide (NT-pro BNP), atrial natriuretic peptide (ANP), carcinoembryonic antigen (CEA) and human serum albumin (HSA), was only one thousandth that of the original BNP antigen, which clearly demonstrated the specific binding of recombinant scFv toward BNP. The anti-BNP, scFv-based, electrochemical immunoassay exhibited excellent analytical performance with a detection limit of 1 fg/ml and a wide linear detection range from 1 to 10,000 fg/ml. The optimum culture conditions to obtain the maximum concentration of recombinant scFv were a pH range of 5.0-7.0 and an incubation temperature of 20°C. This anti-BNP scFv expressed in P. pastoris has the potential for promising applications in the diagnosis of heart failure.
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Affiliation(s)
- Bo Hee Maeng
- Department of Chemical Engineering, Kwangwoon University, 447-1 Wolgye-dong, Nowon-gu, Seoul 139-701, Republic of Korea
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Maeng BH, Nam DH, Kim YH. Coexpression of molecular chaperones to enhance functional expression of anti-BNP scFv in the cytoplasm of Escherichia coli for the detection of B-type natriuretic peptide. World J Microbiol Biotechnol 2010; 27:1391-8. [PMID: 25187138 DOI: 10.1007/s11274-010-0590-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 10/05/2010] [Indexed: 11/29/2022]
Abstract
Molecular chaperones are a ubiquitous family of cellular proteins that mediate the correct folding of other target polypeptides. In our previous study, the recombinant anti-BNP scFv, which has promising applications for diagnostic, prognostic, and therapeutic monitoring of heart failure, was expressed in the cytoplasm of Escherichia coli. However, when the anti-BNP scFv was expressed, 73.4% of expressed antibodies formed insoluble inclusion bodies. In this study, molecular chaperones were coexpressed with anti-BNP scFv with the goal of improving the production of functional anti-BNP in the cytoplasm of E. coli. Five sets of molecular chaperones were assessed for their effects on the production of active anti-BNP scFv. These sets included the following: trigger factor (TF); groES/groEL; groES/groEL/TF; dnaK/dnaJ/grpE; groES/groEL/dnaK/dnaJ/grpE. Of these chaperones, the coexpression of anti-BNP scFv with the groES/groEL chaperones encoded in plasmid pGro7 exhibited the most efficient functional expression of anti-BNP scFv as an active form. Coexpressed with the groES/groEL chaperones, 64.9% of the total anti-BNP scFv was produced in soluble form, which is 2.4 times higher scFv than that of anti-BNP scFv expressed without molecular chaperones, and the relative binding activity was 1.5-fold higher. The optimal concentration of L-arabinose required for induction of the groES/groEL chaperone set was determined to be 1.0 mM and relative binding activity was 3.5 times higher compared with that of no induction with L-arabinose. In addition, soluble anti-BNP scFv was increased from 11.5 to 31.4 μg/ml with optimized inducer concentration (1.0 mM L-arabinose) for the coexpression of the groES/groEL chaperones. These results demonstrate that the functional expression of anti-BNP scFv can be improved by coexpression of molecular chaperones, as molecular chaperones can identify and help to refold improperly folded anti-BNP scFv.
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Affiliation(s)
- Bo Hee Maeng
- Department of Chemical Engineering, Kwangwoon University, 447-1 Wolgye-dong, Nowon-gu, Seoul, 139-701, Republic of Korea
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