1
|
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 %.
Collapse
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.
| |
Collapse
|
2
|
Alonso Villela SM, Kraïem-Ghezal H, Bouhaouala-Zahar B, Bideaux C, Aceves Lara CA, Fillaudeau L. Production of recombinant scorpion antivenoms in E. coli: current state and perspectives. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12578-1. [PMID: 37199752 DOI: 10.1007/s00253-023-12578-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/19/2023]
Abstract
Scorpion envenomation is a serious health problem in tropical and subtropical zones. The access to scorpion antivenom is sometimes limited in availability and specificity. The classical production process is cumbersome, from the hyper-immunization of the horses to the IgG digestion and purification of the F(ab)'2 antibody fragments. The production of recombinant antibody fragments in Escherichia coli is a popular trend due to the ability of this microbial host to produce correctly folded proteins. Small recombinant antibody fragments, such as single-chain variable fragments (scFv) and nanobodies (VHH), have been constructed to recognize and neutralize the neurotoxins responsible for the envenomation symptoms in humans. They are the focus of interest of the most recent studies and are proposed as potentially new generation of pharmaceuticals for their use in immunotherapy against scorpion stings of the Buthidae family. This literature review comprises the current status on the scorpion antivenom market and the analyses of cross-reactivity of commercial scorpion anti-serum against non-specific scorpion venoms. Recent studies on the production of new recombinant scFv and nanobodies will be presented, with a focus on the Androctonus and Centruroides scorpion species. Protein engineering-based technology could be the key to obtaining the next generation of therapeutics capable of neutralizing and cross-reacting against several types of scorpion venoms. KEY POINTS: • Commercial antivenoms consist of predominantly purified equine F(ab)'2fragments. • Nanobody-based antivenom can neutralize Androctonus venoms and have a low immunogenicity. • Affinity maturation and directed evolution are used to obtain potent scFv families against Centruroides scorpions.
Collapse
Affiliation(s)
| | - Hazar Kraïem-Ghezal
- Laboratoire Des Venins Et Molécules Thérapeutiques, Institut Pasteur de Tunis, Université de Tunis El Manar, 13 Place Pasteur BP74, 1002, Tunis, Tunisia
| | - Balkiss Bouhaouala-Zahar
- Laboratoire Des Venins Et Molécules Thérapeutiques, Institut Pasteur de Tunis, Université de Tunis El Manar, 13 Place Pasteur BP74, 1002, Tunis, Tunisia.
- Faculté de Médecine de Tunis, Université de Tunis El Manar, Tunis, Tunisia.
| | - Carine Bideaux
- TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France
| | | | - Luc Fillaudeau
- TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France
| |
Collapse
|
3
|
Production of a Soluble Recombinant Antibody Fragment against MMP9 Using Escherichia coli. ACTA ACUST UNITED AC 2021; 57:medicina57090981. [PMID: 34577904 PMCID: PMC8468072 DOI: 10.3390/medicina57090981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/13/2021] [Accepted: 09/16/2021] [Indexed: 11/22/2022]
Abstract
Matrix metalloproteinase 9 (MMP9) is involved in several aspects of the pathology of cancer, including invasion, metastasis, and angiogenesis. In this study, we expressed a recombinant scFv-type anti-MMP9 antibody in soluble form using Escherichia coli, purified it, and confirmed its antigen-binding ability. The convenient, rapid, inexpressive system used in this study for producing recombinant antibody fragments needs only five days, and thus can be used for the efficient production of scFv against MMP9, which can be used in a range of applications and industrial fields, including diagnosis and treatment of inflammatory and cancer-related diseases.
Collapse
|
4
|
Koçer İ, Cox EC, DeLisa MP, Çelik E. Effects of variable domain orientation on anti-HER2 single-chain variable fragment antibody expressed in the Escherichia coli cytoplasm. Biotechnol Prog 2020; 37:e3102. [PMID: 33190426 DOI: 10.1002/btpr.3102] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/04/2020] [Accepted: 11/09/2020] [Indexed: 02/06/2023]
Abstract
Single-chain variable fragment (scFv) antibodies have great potential for a range of applications including as diagnostic and therapeutic agents. However, production of scFvs is challenging because proper folding and activity depend on the formation of two intrachain disulfide bonds that do not readily form in the cytoplasm of living cells. Functional expression in bacteria therefore involves targeting to the more oxidizing periplasm, but yields in this compartment can be limiting due to secretion bottlenecks and the relatively small volume compared to the cytoplasm. In the present study, we evaluated an anti-HER2 scFv, which is specific for human epidermal growth receptor 2 (HER2) overexpressed in breast cancer, for functional expression in the cytoplasm of Escherichia coli strains BL21(DE3) and SHuffle T7 Express, the latter of which is genetically engineered for cytoplasmic disulfide bond formation. Specifically, we observed much greater solubility and binding activity with SHuffle T7 Express cells, which likely resulted from the more oxidative cytoplasm in this strain background. We also found that SHuffle T7 Express cells were capable of supporting high-level soluble production of anti-HER2 scFvs with intact disulfide bonds independent of variable domain orientation, providing further evidence that SHuffle T7 Express is a promising host for laboratory and preparative expression of functional scFv antibodies.
Collapse
Affiliation(s)
- İlkay Koçer
- Department of Chemical Engineering, Hacettepe University, Ankara, Turkey.,Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, USA
| | - Emily C Cox
- Biological and Biomedical Sciences, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - Matthew P DeLisa
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York, USA.,Biological and Biomedical Sciences, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - Eda Çelik
- Department of Chemical Engineering, Hacettepe University, Ankara, Turkey.,Institute of Science, Division of Bioengineering, Hacettepe University, Ankara, Turkey
| |
Collapse
|
5
|
Farshdari F, Ahmadzadeh M, Nematollahi L, Mohit E. The improvement of anti-HER2 scFv soluble expression in Escherichia coli. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000317861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Farzaneh Farshdari
- Islamic Azad University, Iran; Shahid Beheshti University of Medical Sciences, Iran
| | | | | | - Elham Mohit
- Shahid Beheshti University of Medical Sciences, Iran; Shahid Beheshti University of Medical Sciences, Iran
| |
Collapse
|
6
|
Evaluation of a Pretargeting Strategy for Molecular Imaging of the Prostate Stem Cell Antigen with a Single Chain Antibody. Sci Rep 2018; 8:3755. [PMID: 29491468 PMCID: PMC5830539 DOI: 10.1038/s41598-018-22179-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 02/19/2018] [Indexed: 01/09/2023] Open
Abstract
In pretargeted radio-immunotherapy, the gradual administration of a non-radioactive tumor antigen-addressing antibody-construct and the subsequent application of a radioactive labeled, low molecular weight substance enable a highly effective and selective targeting of tumor tissue. We evaluated this concept in prostate stem cell antigen (PSCA)-positive cancers using the antigen-specific, biotinylated single chain antibody scFv(AM1)-P-BAP conjugated with tetrameric neutravidin. To visualize the systemic biodistribution, a radiolabeled biotin was injected to interact with scFv(AM1)-P-BAP/neutravidin conjugate. Biotin derivatives conjugated with different chelators for complexation of radioactive metal ions and a polyethylene glycol linker (n = 45) were successfully synthesized and evaluated in vitro and in a mouse xenograft model. In vivo, the scFv(AM1)-P-BAP showed highly PSCA-specific tumor retention with a PSCA+ tumor/PSCA- tumor accumulation ratio of ten. PEGylation of radiolabeled biotin resulted in lower liver uptake improving the tumor to background ratio.
Collapse
|
7
|
Ikonomova SP, He Z, Karlsson AJ. A simple and robust approach to immobilization of antibody fragments. J Immunol Methods 2016; 435:7-16. [PMID: 27142477 DOI: 10.1016/j.jim.2016.04.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 04/06/2016] [Accepted: 04/29/2016] [Indexed: 11/18/2022]
Abstract
Antibody fragments, such as the single-chain variable fragment (scFv), have much potential in research and diagnostics because of their antigen-binding ability similar to a full-sized antibody and their ease of production in microorganisms. Some applications of antibody fragments require immobilization on a surface, and we have established a simple immobilization method that is based on the biotin-streptavidin interaction and does not require a separate purification step. We genetically fused two biotinylation tags-the biotin carboxyl carrier protein (BCCP) or the AviTag minimal sequence-to six different scFvs (scFv13R4, scFvD10, scFv26-10, scFv3, scFv5, and scFv12) for site-specific biotinylation in vivo by endogenous biotin ligases produced by Escherichia coli. The biotinylated scFvs were immobilized onto streptavidin-coated plates directly from cell lysates, and immobilization was detected through enzyme-linked immunosorbent assays. All scFvs fusions were successfully immobilized, and scFvs biotinylated via the BCCP tag tended to immobilize better than those biotinylated via the AviTag, even when biotinylation efficiency was improved with the biotin ligase BirA. The ability of immobilized scFvs to bind antigens was confirmed using scFv13R4 and scFvD10 with their respective targets β-galactosidase and bacteriophage lambda head protein D (gpD). The immobilized scFv13R4 bound to β-galactosidase at the same level for both biotinylation tags when the surface was saturated with the scFv, and immobilized scFvs retained their functionality for at least 100days after immobilization. The simplicity and robustness of our method make it a promising approach for future applications that require antibody fragment immobilization.
Collapse
Affiliation(s)
- Svetlana P Ikonomova
- Department of Chemical and Biomolecular Engineering, University of Maryland, 2113 Chemical and Nuclear Engineering Building (#090), College Park, MD 20742, USA
| | - Ziming He
- Department of Chemical and Biomolecular Engineering, University of Maryland, 2113 Chemical and Nuclear Engineering Building (#090), College Park, MD 20742, USA
| | - Amy J Karlsson
- Department of Chemical and Biomolecular Engineering, University of Maryland, 2113 Chemical and Nuclear Engineering Building (#090), College Park, MD 20742, USA.
| |
Collapse
|
8
|
Development and application of recombinant antibody-based immunoassays to tetraconazole residue analysis in fruit juices. Food Chem 2014; 143:205-13. [DOI: 10.1016/j.foodchem.2013.07.121] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 01/11/2013] [Accepted: 07/25/2013] [Indexed: 11/19/2022]
|
9
|
Antiproliferative and apoptotic effects of a specific antiprostate stem cell single chain antibody on human prostate cancer cells. JOURNAL OF ONCOLOGY 2013; 2013:839831. [PMID: 24391668 PMCID: PMC3872421 DOI: 10.1155/2013/839831] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 11/14/2013] [Indexed: 02/04/2023]
Abstract
Prostate stem cell antigen (PSCA) is a highly glycosylated cell surface protein which is overexpressed in several malignancies including prostate, pancreas, and urinary bladder cancers. Tumor suppression has been reported by anti-PSCA antibody. Small and high affinity single chain antibodies (scFv) have been introduced as effective agents for cancer immunotargeting approaches. In the present study, we used a phage antibody display library of scFv and selected two antibodies against two immunodominant epitopes of PSCA by panning process. The reactivity of the scFvs for the corresponding epitopes was determined by phage ELISA. The binding specificity of antibodies to PSCA-expressing prostate cancer cell line, DU-145, was analyzed by flow cytometry. The antiproliferative and apoptotic induction effects were evaluated by MTT and Annexin-V assays, respectively. Results represented functional scFv C5-II which could bind specifically to DU-145 cells and significantly inhibited the proliferation of these cells (61%) with no effect on PSCA-negative cells. The antibody also induced apoptosis in the PSCA expressing cells. The percentage of the apoptotic cells after 24 hrs of exposure to 500 scFv/cell was 33.80%. These results demonstrate that the functional anti-PSCA scFv C5-II has the potential to be considered as a new agent for targeted therapy of prostate cancer.
Collapse
|
10
|
|
11
|
|
12
|
Comparative Study of Monoclonal and Recombinant Antibody-Based Immunoassays for Fungicide Analysis in Fruit Juices. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9655-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
13
|
Hou J, Tyo KE, Liu Z, Petranovic D, Nielsen J. Metabolic engineering of recombinant protein secretion by Saccharomyces cerevisiae. FEMS Yeast Res 2012; 12:491-510. [DOI: 10.1111/j.1567-1364.2012.00810.x] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 04/19/2012] [Accepted: 04/22/2012] [Indexed: 01/02/2023] Open
Affiliation(s)
| | | | - Zihe Liu
- Department of Chemical and Biological Engineering; Chalmers University of Technology; Göteborg; Sweden
| | - Dina Petranovic
- Department of Chemical and Biological Engineering; Chalmers University of Technology; Göteborg; Sweden
| | - Jens Nielsen
- Department of Chemical and Biological Engineering; Chalmers University of Technology; Göteborg; Sweden
| |
Collapse
|
14
|
Kang A, Chang MW. Identification and reconstitution of genetic regulatory networks for improved microbial tolerance to isooctane. MOLECULAR BIOSYSTEMS 2012; 8:1350-8. [PMID: 22328008 DOI: 10.1039/c2mb05441h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microbial tolerance to hydrocarbons has been studied in an effort to improve the productivity of biochemical processes and to enhance the efficiency of hydrocarbon bioremediation. Despite these studies, few attempts have been made to design rational strategies to improve microbial tolerance to hydrocarbons. Herein, we present an engineering framework that enables us to harness our understanding of genetic regulatory networks to improve hydrocarbon tolerance. In this study, isooctane was used as a representative hydrocarbon due to its use in petroleum refining and in biochemical processes. To increase isooctane tolerance, we first identified essential transcriptional determinants and genetic regulatory networks underlying cellular responses to isooctane in Escherichia coli using genome-wide microarray analysis. Based on functional transcriptome and bioinformatics analysis, a range of combinations of transcription factors whose activity was predictably perturbed by isooctane were knocked out and overexpressed to reconstitute the regulatory networks. We demonstrated that the reconstitution of the regulatory networks led to a significant improvement in isooctane tolerance, and especially, engineered E. coli strains lacking and overexpressing some of the perturbed transcription factors showed 3- to 5-fold improvement. This microbe with high tolerance to isooctane can be harnessed for biochemical processes, fuel oil bioremediation and metabolic engineering for biofuel production. Furthermore, we envision that the engineering framework employed to improve the tolerance in this study can be exploited for developing other microbes with desired phenotypes.
Collapse
Affiliation(s)
- Aram Kang
- Division of Chemical and Biomolecular Engineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore
| | | |
Collapse
|
15
|
High productivity chromatography refolding process for Hepatitis B Virus X (HBx) protein guided by statistical design of experiment studies. J Chromatogr A 2012; 1223:64-71. [DOI: 10.1016/j.chroma.2011.12.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 12/08/2011] [Accepted: 12/08/2011] [Indexed: 12/17/2022]
|
16
|
Recombinant antibodies and their use in biosensors. Anal Bioanal Chem 2011; 402:3027-38. [PMID: 22159424 DOI: 10.1007/s00216-011-5569-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 11/04/2011] [Accepted: 11/09/2011] [Indexed: 12/24/2022]
Abstract
Inexpensive, noninvasive immunoassays can be used to quickly detect disease in humans. Immunoassay sensitivity and specificity are decidedly dependent upon high-affinity, antigen-specific antibodies. Antibodies are produced biologically. As such, antibody quality and suitability for use in immunoassays cannot be readily determined or controlled by human intervention. However, the process through which high-quality antibodies can be obtained has been shortened and streamlined by use of genetic engineering and recombinant antibody techniques. Antibodies that traditionally take several months or more to produce when animals are used can now be developed in a few weeks as recombinant antibodies produced in bacteria, yeast, or other cell types. Typically most immunoassays use two or more antibodies or antibody fragments to detect antigens that are indicators of disease. However, a label-free biosensor, for example, a quartz-crystal microbalance (QCM) needs one antibody only. As such, the cost and time needed to design and develop an immunoassay can be substantially reduced if recombinant antibodies and biosensors are used rather than traditional antibody and assay (e.g. enzyme-linked immunosorbant assay, ELISA) methods. Unlike traditional antibodies, recombinant antibodies can be genetically engineered to self-assemble on biosensor surfaces, at high density, and correctly oriented to enhance antigen-binding activity and to increase assay sensitivity, specificity, and stability. Additionally, biosensor surface chemistry and physical and electronic properties can be modified to further increase immunoassay performance above and beyond that obtained by use of traditional methods. This review describes some of the techniques investigators have used to develop highly specific and sensitive, recombinant antibody-based biosensors for detection of antigens in simple or complex biological samples.
Collapse
|
17
|
Dispersive mixing and intraparticle partitioning of protein in size-exclusion chromatographic refolding. J Chromatogr A 2011; 1218:8503-10. [DOI: 10.1016/j.chroma.2011.09.076] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 09/20/2011] [Indexed: 11/21/2022]
|
18
|
Refolding of proteins from inclusion bodies: rational design and recipes. Appl Microbiol Biotechnol 2011; 92:241-51. [DOI: 10.1007/s00253-011-3513-y] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Revised: 07/18/2011] [Accepted: 07/24/2011] [Indexed: 01/31/2023]
|
19
|
Grohs BM, Niu Y, Veldhuis LJ, Trabelsi S, Garabagi F, Hassell JA, McLean MD, Hall JC. Plant-produced trastuzumab inhibits the growth of HER2 positive cancer cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:10056-63. [PMID: 20799692 DOI: 10.1021/jf102284f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
To study the agricultural production of biosimilar antibodies, trastuzumab (Herceptin) was expressed in Nicotiana benthamiana using the magnICON viral-based transient expression system. Immunoblot analyses of crude plant extracts revealed that trastuzumab accumulates within plants mostly in the fully assembled tetrameric form. Purification of trastuzumab from N. benthamiana was achieved using a scheme that combined ammonium sulfate precipitation with affinity chromatography. Following purification, the specificity of the plant-produced trastuzumab for the HER2 receptor was compared with Herceptin and confirmed by western immunoblot. Functional assays revealed that plant-produced trastuzumab and Herceptin have similar in vitro antiproliferative effects on breast cancer cells that overexpress HER2. Results confirm that plants may be developed as an alternative to traditional antibody expression systems for the production of therapeutic mAbs.
Collapse
Affiliation(s)
- Brittany M Grohs
- School of Environmental Sciences, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Ding Y, Chuan YP, He L, Middelberg AP. Modeling the competition between aggregation and self-assembly during virus-like particle processing. Biotechnol Bioeng 2010; 107:550-60. [DOI: 10.1002/bit.22821] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|