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Fuselli A, de Los Milagros Bürgi M, Kratje R, Prieto C. Generation and functional evaluation of novel monoclonal antibodies targeting glycosylated human stem cell factor. Appl Microbiol Biotechnol 2022; 106:8121-8137. [PMID: 36401641 DOI: 10.1007/s00253-022-12282-6] [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: 03/16/2022] [Revised: 10/31/2022] [Accepted: 11/05/2022] [Indexed: 11/21/2022]
Abstract
Human stem cell factor (hSCF) is an early-acting growth factor that promotes proliferation, differentiation, migration, and survival in several tissues. It plays a crucial role in hematopoiesis, gametogenesis, melanogenesis, intestinal motility, and in development and recovery of nervous and cardiovascular systems. Potential therapeutic applications comprise anemia treatment, mobilization of hematopoietic stem/progenitor cells to peripheral blood, and increasing gene transduction efficiency for gene therapy. Developing new tools to characterize recombinant hSCF in most native-like form as possible is crucial to understand the complexity of its in vivo functions and for improving its biotechnological applications. The soluble domain of hSCF was expressed in HEK293 cells. Highly purified rhSCF showed great molecular mass variability due to the presence of N- and O-linked carbohydrates, and it presented a 2.5-fold increase on proliferative activity compared to bacteria-derived hSCF. Three hybridoma clones producing monoclonal antibodies (mAbs) with high specificity for the glycoprotein were obtained. 1C4 and 2D3 mAbs were able to detect bacteria-derived and glycosylated rhSCF and demonstrated to be excellent candidates to develop a sandwich ELISA assay for rhSCF quantification, with detection limits of 0.18 and 0.07 ng/ml, respectively. Interestingly, 1A10 mAb only recognized glycosylated rhSCF, suggesting that sugar moieties might be involved in epitope recognition. 1A10 mAb showed the highest binding affinity, and it constituted the best candidate for immunodetection of the entire set rhSCF glycoforms in western blot assays, and for intracellular cytokine staining. Our work shows that combining glycosylated rhSCF expression with hybridoma technology is a powerful strategy to obtain specific suitable immunochemical assays and thus improve glycoprotein-producing bioprocesses. KEY POINTS: • Soluble glycosylated human SCF exerted improved proliferative activity on UT-7 cells. • Three mAbs with high specificity targeting glycosylated human SCF were obtained. • mAbs applications comprise sandwich ELISA, western blot, and immunofluorescence assays.
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Affiliation(s)
- Antonela Fuselli
- UNL, CONICET, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Cell Culture Laboratory, Ciudad Universitaria, Ruta Nacional 168, Km 472.4, C.C. 242 (S3000ZAA), Santa Fe, Argentina
| | - María de Los Milagros Bürgi
- UNL, CONICET, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Cell Culture Laboratory, Ciudad Universitaria, Ruta Nacional 168, Km 472.4, C.C. 242 (S3000ZAA), Santa Fe, Argentina
| | - Ricardo Kratje
- UNL, CONICET, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Cell Culture Laboratory, Ciudad Universitaria, Ruta Nacional 168, Km 472.4, C.C. 242 (S3000ZAA), Santa Fe, Argentina
| | - Claudio Prieto
- UNL, FBCB (School of Biochemistry and Biological Sciences), CBL (Biotechnological Center of Litoral), Biotechnological Development Laboratory, Ciudad Universitaria, Ruta Nacional 168, Km 472.4, C.C. 242 (S3000ZAA), Santa Fe, Argentina.
- Cellargen Biotech S.R.L., Antonia Godoy 6369 (S3000ZAA), Santa Fe, Argentina.
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2
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Bürgi M, Aparicio GI, Dorella A, Kratje R, Scorticati C, Oggero M. Novel erythropoietin-based therapeutic candidates with extra N-glycan sites that block hematopoiesis but preserve neuroplasticity. Biotechnol J 2021; 16:e2000455. [PMID: 33471394 DOI: 10.1002/biot.202000455] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 12/27/2020] [Accepted: 01/15/2021] [Indexed: 12/26/2022]
Abstract
Neurological disorders affect millions of people causing behavior-cognitive disabilities. Nowadays they have no effective treatment. Human erythropoietin (hEPO) has been clinically used because of its neurotrophic and cytoprotective properties. However, the erythropoietic activity (EA) should be considered as a side effect. Some analogs like non-sialylated EPO, carbamylated EPO, or EPO peptides have been developed showing different weaknesses: erythropoiesis preservation, low stability, potential immunogenicity, or fast clearance. Herein, we used a novel strategy that blocks the EA but preserves hEPO neurobiological actions. N-glycoengineering was accomplished to add a new glycosylation site within the hEPO sequence responsible for its EA. hEPO-derivatives were produced by CHO.K1 cells, affinity-purified and functionally analyzed studying their in vitro and in vivo EA, their in vitro neuronal plasticity in hippocampal neurons and their neuroprotective action by rescuing hippocampal neurons from apoptosis. Muteins Mut 45_47 (K45 > N45 + N47 > T47), Mut 104 (S104 > N104), and Mut 151_153 (G151 > N151 + K153 > T153) lost their EA but preserved their neuroprotection activity and enhanced neuroplasticity more efficiently than hEPO. Interestingly, Mut 45_47 resulted in a promising candidate to explore as neurotherapeutic considering not only its biopotency but also its pharmacokinetic potential due to the hyperglycosylation.
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Affiliation(s)
- Milagros Bürgi
- UNL, CONICET, FBCB, Centro Biotecnológico del Litoral, Santa Fe, Pcia. Santa Fe S3000ZAA, Argentina
| | - Gabriela Inés Aparicio
- IIB-UNSAM, IIBio-CONICET, Laboratorio de Neurobiología Molecular y Celular. Campus Miguelete, San Martín, Buenos Aires, Argentina
| | - Aquiles Dorella
- UNL, FBCB, Centro Biotecnológico del Litoral, Santa Fe, Pcia. Santa Fe S3000ZAA, Argentina
| | - Ricardo Kratje
- UNL, CONICET, FBCB, Centro Biotecnológico del Litoral, Santa Fe, Pcia. Santa Fe S3000ZAA, Argentina
| | - Camila Scorticati
- IIB-UNSAM, IIBio-CONICET, Laboratorio de Neurobiología Molecular y Celular. Campus Miguelete, San Martín, Buenos Aires, Argentina
| | - Marcos Oggero
- UNL, CONICET, FBCB, Centro Biotecnológico del Litoral, Santa Fe, Pcia. Santa Fe S3000ZAA, Argentina
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3
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Molnár T, Bartošová M, Antošová M, Škultéty Ľ, Polakovič M. Cost-effective indirect ELISA method for determination of recombinant human erythropoietin in production streams. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00680-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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4
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Kish WS, Roach MK, Sachi H, Naik AD, Menegatti S, Carbonell RG. Purification of human erythropoietin by affinity chromatography using cyclic peptide ligands. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1085:1-12. [DOI: 10.1016/j.jchromb.2018.03.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 03/12/2018] [Accepted: 03/24/2018] [Indexed: 10/17/2022]
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5
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Fitzgerald J, Leonard P, Darcy E, Sharma S, O'Kennedy R. Immunoaffinity Chromatography: Concepts and Applications. Methods Mol Biol 2017; 1485:27-51. [PMID: 27730547 DOI: 10.1007/978-1-4939-6412-3_3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Antibody-based separation methods, such as immunoaffinity chromatography (IAC), are powerful purification and isolation techniques. Antibodies isolated using these techniques have proven highly efficient in applications ranging from clinical diagnostics to environmental monitoring. Immunoaffinity chromatography is an efficient antibody separation method which exploits the binding efficiency of a ligand to an antibody. Essential to the successful design of any IAC platform is the optimization of critical experimental parameters such as (a) the biological affinity pair, (b) the matrix support, (c) the immobilization coupling chemistry, and (d) the effective elution conditions. These elements and the practicalities of their use are discussed in detail in this review. At the core of all IAC platforms is the high affinity interactions between antibodies and their related ligands; hence, this review entails a brief introduction to the generation of antibodies for use in immunoaffinity chromatography and also provides specific examples of their potential applications.
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Affiliation(s)
- Jenny Fitzgerald
- School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Paul Leonard
- School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Biomedical Diagnostics Institute, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Elaine Darcy
- School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Shikha Sharma
- Biomedical Diagnostics Institute, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Richard O'Kennedy
- School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland. .,Biomedical Diagnostics Institute, Dublin City University, Glasnevin, Dublin 9, Ireland.
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6
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Determination of robustness and optimal work conditions for a purification process of a therapeutic recombinant protein using response surface methodology. Biotechnol Prog 2011; 27:724-32. [DOI: 10.1002/btpr.588] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 02/04/2011] [Indexed: 11/07/2022]
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7
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Martínez-Ceron MC, Marani MM, Taulés M, Etcheverrigaray M, Albericio F, Cascone O, Camperi SA. Affinity chromatography based on a combinatorial strategy for rerythropoietin purification. ACS COMBINATORIAL SCIENCE 2011; 13:251-8. [PMID: 21495625 DOI: 10.1021/co1000663] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Small peptides containing fewer than 10 amino acids are promising ligand candidates with which to build affinity chromatographic systems for industrial protein purification. The application of combinatorial peptide synthesis strategies greatly facilitates the discovery of suitable ligands for any given protein of interest. Here we sought to identify peptide ligands with affinity for recombinant human erythropoietin (rhEPO), which is used for the treatment of anemia. A combinatorial library containing the octapeptides X-X-X-Phe-X-X-Ala-Gly, where X = Ala, Asp, Glu, Phe, His, Leu, Asn, Pro, Ser, or Thr, was synthesized on HMBA-ChemMatrix resin by the divide-couple-recombine method. For the library screening, rhEPO was coupled to either Texas Red or biotin. Fluorescent beads or beads showing a positive reaction with streptavidin-peroxidase were isolated. After cleavage, peptides were sequenced by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Fifty-seven beads showed a positive reaction. Peptides showing more consensuses were synthesized, and their affinity to rhEPO was assessed using a plasma resonance biosensor. Dissociation constant values in the range of 1-18 μM were obtained. The best two peptides were immobilized on Sepharose, and the resultant chromatographic matrixes showed affinity for rhEPO with dissociation constant values between 1.8 and 2.7 μM. Chinese hamster ovary (CHO) cell culture supernatant was spiked with rhEPO, and the artificial mixture was loaded on Peptide-Sepharose columns. The rhEPO was recovered in the elution fraction with a yield of 90% and a purity of 95% and 97% for P1-Sepharose and P2-Sepharose, respectively.
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Affiliation(s)
- María C. Martínez-Ceron
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
| | - Mariela M. Marani
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
| | | | - Marina Etcheverrigaray
- Laboratorio de Cultivos Celulares, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria (CC 242), (3000) Santa Fe, Argentina
| | - Fernando Albericio
- Department of Organic Chemistry, University of Barcelona, Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Osvaldo Cascone
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
| | - Silvia A. Camperi
- Cátedra de Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
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Abstract
Antibody-based separation methods, such as immunoaffinity chromatography (IAC), are powerful purification and isolation techniques. Antibodies isolated using these techniques have proven highly efficient in applications ranging from clinical diagnostics to environmental monitoring. IAC is an efficient antibody separation method which exploits the binding efficiency of a ligand to an antibody. Essential to the successful design of any IAC platform is the optimisation of critical experimental parameters such as: (a) the biological affinity pair, (b) the matrix support, (c) the immobilisation coupling chemistry, and (d) the effective elution conditions. These elements and the practicalities of their use are discussed in detail in this review. At the core of all IAC platforms is the high-affinity interactions between antibodies and their related ligands; hence, this review entails a brief introduction to the generation of antibodies for use in IAC and also provides specific examples of their potential applications.
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Affiliation(s)
- Jenny Fitzgerald
- School of Biotechnology, Dublin City University, Dublin, Ireland
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Singh AK, Gupta S. Analysis of recombinant human erythropoietin and darbepoietin in spiked plasma. Proteomics Clin Appl 2007; 1:626-39. [DOI: 10.1002/prca.200600972] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2006] [Indexed: 11/10/2022]
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Giménez E, de Bolós C, Belalcazar V, Andreu D, Borrás E, De la Torre BG, Barbosa J, Segura J, Pascual JA. Anti-EPO and anti-NESP antibodies raised against synthetic peptides that reproduce the minimal amino acid sequence differences between EPO and NESP. Anal Bioanal Chem 2007; 388:1531-8. [PMID: 17534608 DOI: 10.1007/s00216-007-1334-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2007] [Revised: 04/26/2007] [Accepted: 04/27/2007] [Indexed: 12/12/2022]
Abstract
Erythropoietin (EPO) is a hormone that regulates red blood cell production. Recombinant human EPO (rHuEPO) and NESP (novel erythropoiesis stimulating protein) have been produced for therapeutic purposes and also to improve sports performance. The primary sequences of rHuEPO and NESP differ by just five amino acids. Due to the high homology, no antibodies that are able to discriminate between both molecules have been obtained until now. The aim of the present work was to design synthetic peptides corresponding to the sequence that differs between EPO and NESP (87-90aa), that can then be used as immunogens to develop specific rabbit polyclonal antibodies for selectively detecting EPO and NESP. Three peptides were synthesized: EPO (81-95), NESP (81-95), and NESP (86-104), and these were coupled to KLH and OVA for immunization and screening purposes, respectively. The sera obtained were tested by ELISA on synthetic peptide-OVA conjugates and purified by immunoaffinity chromatography against the corresponding synthetic peptide. The specific purified antibodies were characterized by ELISA, SDS-PAGE, and isoelectric focusing, followed by western blot. Antisera raised against EPO (81-95) recognized rHuEPO but not NESP. In contrast, anti-NESP (84-106) sera gave a specific anti-NESP response only after immunoaffinity purification on a NESP (86-91) column. An efficient strategy for generating specific antibodies against EPO and NESP can be achieved by selecting suitable synthetic peptides. The antibodies obtained are able to differentiate between rHuEPO and NESP, and may be particularly useful for screening purposes in both therapeutic and antidoping contexts.
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Affiliation(s)
- E Giménez
- Departament de Química Analítica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain
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Mi J, Yan J, Guo Z, Zhao M, Chang W. Isolation and characterization of an anti-recombinant erythropoietin single-chain antibody fragment using a phage display antibody library. Anal Bioanal Chem 2005; 383:218-23. [PMID: 16158293 DOI: 10.1007/s00216-005-3401-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2005] [Revised: 06/10/2005] [Accepted: 06/15/2005] [Indexed: 11/26/2022]
Abstract
The production of a large amount of specific antibodies against erythropoietin (EPO) is necessary for both clinical treatment and doping control. However, the weak immunogenicity of EPO and the side effects of excessive injection make the conventional immunological protocol rather inefficient and time-consuming. In this study, a single-chain antibody fragment of variable region (scFv) against recombinant human erythropoietin (rHuEPO) was produced after three rounds of panning a phage display antibody library. The selected scFv-B2 was expressed in soluble form in Escherichia coli DH5alpha F' and purified by His-bond nickel affinity chromatography with a yield of about 1-2 mg of antibody in 1 L of the culture supernatant. The molecular weight of the scFv was estimated to be 29 kDa by sodium dodecyl sulfate polyacrylamide gel electrophoresis and the affinity constant was found to be 1.0 x 10(8) L mol(-1) based on a competitive indirect enzyme-linked immunosorbent assay (CI-ELISA). The potential ability of the scFvs for immunopurification of rHuEPO from related sample was demonstrated by using a double-antibody sandwich ELISA. The reported method is a very powerful tool to produce specific antibodies for rHuEPO detection demands.
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Affiliation(s)
- Jiebo Mi
- Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P R China
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