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Fan Q, Zhao R, Chen Y, Chi L, Huang Y, Liu M, Shi G. Affinity purification of mAb from serum-containing hybridoma culture supernatant through a novel nanobody that discriminates mouse IgG from bovine IgG by recognizing the mouse kappa constant region (mCK). J Chromatogr A 2024; 1724:464929. [PMID: 38669942 DOI: 10.1016/j.chroma.2024.464929] [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: 10/30/2023] [Revised: 04/02/2024] [Accepted: 04/21/2024] [Indexed: 04/28/2024]
Abstract
When purifying mAb from serum-containing hybridoma culture supernatant, it is essential that mouse IgG remains free from contaminations of bovine IgG. However, the broadly used Protein A resin cannot achieve this goal due to binding between both mouse and bovine IgG. Here, a novel nanobody-based affinity purification magnetic beads that discriminates mouse IgG from bovine IgG was developed. To bind all subtypes of mouse IgG (IgG1, IgG2a, IgG2b and IgG3) that contain the kappa light chain, mCK (mouse kappa constant region)-specific nanobody binders were selected from an immune phage display VHH library; this library was constructed with peripheral blood mononuclear cells (PBMCs), which were collected from Bactrian camels immunized with a mix of intact mouse IgGs (IgG1, IgG2a, IgG2b and IgG3). A novel clone that exhibited a higher expression level and a higher binding affinity was selected (4E6). Then, the 4E6 nanobody in the format of VHH-hFC (human Fc) was conjugated on magnetic beads with a maximal binding capacity of 15.41±0.69 mg mouse IgG/mL beads. Furthermore, no bovine IgG could be copurified from hybridoma culture supernatant with immunomagnetic beads. This approach is valuable for the large-scale in vitro production of highly pure antibodies by hybridoma cells.
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Affiliation(s)
- Qi Fan
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Rui Zhao
- Beijing Scipromed Biotech Co., Ltd., Beijing 102200, PR China
| | - Yinuo Chen
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Lida Chi
- Beijing Scipromed Biotech Co., Ltd., Beijing 102200, PR China
| | - Yonglin Huang
- Beijing Scipromed Biotech Co., Ltd., Beijing 102200, PR China
| | - Mengmeng Liu
- Beijing Scipromed Biotech Co., Ltd., Beijing 102200, PR China
| | - Guoqing Shi
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
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2
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Xue A, Fan S. Matrices and Affinity Ligands for Antibody Purification and Corresponding Applications in Radiotherapy. Biomolecules 2022; 12:biom12060821. [PMID: 35740946 PMCID: PMC9221399 DOI: 10.3390/biom12060821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/09/2022] [Accepted: 06/10/2022] [Indexed: 02/05/2023] Open
Abstract
Antibodies have become an important class of biological products in cancer treatments such as radiotherapy. The growing therapeutic applications have driven a demand for high-purity antibodies. Affinity chromatography with a high affinity and specificity has always been utilized to separate antibodies from complex mixtures. Quality chromatographic components (matrices and affinity ligands) have either been found or generated to increase the purity and yield of antibodies. More importantly, some matrices (mainly particles) and affinity ligands (including design protocols) for antibody purification can act as radiosensitizers or carriers for therapeutic radionuclides (or for radiosensitizers) either directly or indirectly to improve the therapeutic efficiency of radiotherapy. This paper provides a brief overview on the matrices and ligands used in affinity chromatography that are involved in antibody purification and emphasizes their applications in radiotherapy to enrich potential approaches for improving the efficacy of radiotherapy.
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Gao S, Guisán JM, Rocha-Martin J. Oriented immobilization of antibodies onto sensing platforms - A critical review. Anal Chim Acta 2022; 1189:338907. [PMID: 34815045 DOI: 10.1016/j.aca.2021.338907] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/08/2021] [Accepted: 07/31/2021] [Indexed: 12/26/2022]
Abstract
The immunosensor has been proven a versatile tool to detect various analytes, such as food contaminants, pathogenic bacteria, antibiotics and biomarkers related to cancer. To fabricate robust and reproducible immunosensors with high sensitivity, the covalent immobilization of immunoglobulins (IgGs) in a site-specific manner contributes to better performance. Instead of the random IgG orientations result from the direct yet non-selective immobilization techniques, this review for the first time introduces the advances of stepwise yet site-selective conjugation strategies to give better biosensing efficiency. Noncovalently adsorbing IgGs is the first but decisive step to interact specifically with the Fc fragment, then following covalent conjugate can fix this uniform and antigens-favorable orientation irreversibly. In this review, we first categorized this stepwise strategy into two parts based on the different noncovalent interactions, namely adhesive layer-mediated interaction onto homofunctional support and layer-free interaction onto heterofunctional support (which displays several different functionalities on its surface that are capable to interact with IgGs). Further, the influence of ligands characteristics (synthesis strategies, spacer requirements and matrices selection) on the heterofunctional support has also been discussed. Finally, conclusions and future perspectives for the real-world application of stepwise covalent conjugation are discussed. This review provides more insights into the fabrication of high-efficiency immunosensor, and special attention has been devoted to the well-orientation of full-length IgGs onto the sensing platform.
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Affiliation(s)
- Shipeng Gao
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Cantoblanco, 28049, Madrid, Spain
| | - José M Guisán
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Cantoblanco, 28049, Madrid, Spain.
| | - Javier Rocha-Martin
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Cantoblanco, 28049, Madrid, Spain.
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Huang Y, Fu J, Zhong Y, Shuai W, Zhang H, Li Y, He Q, Tu Z. Tandem nanobody: A feasible way to improve the capacity of affinity chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1173:122678. [PMID: 33839466 DOI: 10.1016/j.jchromb.2021.122678] [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: 12/11/2020] [Revised: 03/09/2021] [Accepted: 03/20/2021] [Indexed: 11/21/2022]
Abstract
Nanobodies, referred to the binding domain of the heavy-chain-only antibodies, are the smallest antigen recognition unit. The molecular weight of monomeric nanobodies is about one-tenth of the conventional antibodies. The small size of nanobodies facilitates genetic manipulation and recombinant expression. This study aimed to investigate the effects of nanobody multivalency on the binding capacity of affinity resin. The nanobody (namely AFV), which binds to the fragment crystallizable (Fc) region of immunoglobulin G (IgG), was fused to the N-terminal of HaloTag in the form of monomeric (H-AFV), dimer (H-diAFV), trimer (H-triAFV), and tetramer (H-tetAFV). The fusion proteins were solubly expressed in Escherichia coli yielding at least 9.9 mg L-1. The biolayer interferometry confirmed an increment of avidity as the increase of AFV valences. The four recombinant proteins in crude cell lysate were site-specifically immobilized onto the Halo ligand resin via the self-labeling HaloTag, respectively. The generated affinity resins were able to isolate high purity IgG from mouse plasma. The highest improvement of the static binding capacity was achieved 73.7% by the H-diAFV resin other than the H-triAFV or H-tetAFV, as compared to the H-AFV resin.
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Affiliation(s)
- Yunxiang Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; School of Life Sciences, Nanchang University, Nanchang 330031, China; Jiangxi-OAI Joint Research Institution, Nanchang University, Nanchang 330047, China
| | - Jinheng Fu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; Jiangxi-OAI Joint Research Institution, Nanchang University, Nanchang 330047, China
| | - Yinfeng Zhong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; School of Life Sciences, Nanchang University, Nanchang 330031, China; Jiangxi-OAI Joint Research Institution, Nanchang University, Nanchang 330047, China
| | - Wenyuan Shuai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Hang Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Yanping Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; Jiangxi-OAI Joint Research Institution, Nanchang University, Nanchang 330047, China; Jiangxi Province Key Laboratory of Modern Analytical Sciences, Nanchang University, Nanchang 330031, China
| | - Qinghua He
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; Jiangxi-OAI Joint Research Institution, Nanchang University, Nanchang 330047, China; Jiangxi Province Key Laboratory of Modern Analytical Sciences, Nanchang University, Nanchang 330031, China
| | - Zhui Tu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; Jiangxi Province Key Laboratory of Modern Analytical Sciences, Nanchang University, Nanchang 330031, China.
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Perret G, Boschetti E. Aptamer-Based Affinity Chromatography for Protein Extraction and Purification. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2020; 174:93-139. [PMID: 31485702 DOI: 10.1007/10_2019_106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Aptamers are oligonucleotide molecules able to recognize very specifically proteins. Among the possible applications, aptamers have been used for affinity chromatography with effective results and advantages over most advanced protein separation technologies. This chapter first discusses the context of the affinity chromatography with aptamer ligands. With the adaptation of SELEX, the chemical modifications of aptamers to comply with the covalent coupling and the separation process are then extensively presented. A focus is then made about the most important applications for protein separation with real-life examples and the comparison with immunoaffinity chromatography. In spite of well-advanced demonstrations and the extraordinary potential developments, a significant optimization work is still due to deserve large-scale applications with all necessary validations. Graphical Abstract Aptamer-protein complexes by X-ray crystallography.
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Buschhaus MJ, Becker S, Porter AJ, Barelle CJ. Isolation of highly selective IgNAR variable single-domains against a human therapeutic Fc scaffold and their application as tailor-made bioprocessing reagents. Protein Eng Des Sel 2019; 32:385-399. [PMID: 32119084 DOI: 10.1093/protein/gzaa002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 12/12/2019] [Accepted: 01/07/2020] [Indexed: 01/03/2023] Open
Abstract
The adaptive immune system of cartilaginous fish (Elasmobranchii), comprising of classical hetero-tetrameric antibodies, is enhanced through the presence of a naturally occurring homodimeric antibody-like immunoglobulin-the new antigen receptor (IgNAR). The binding site of the IgNAR variable single-domain (VNAR) offers advantages of reduced size (<1/10th of classical immunoglobulin) and extended binding topographies, making it an ideal candidate for accessing cryptic epitopes otherwise intractable to conventional antibodies. These attributes, coupled with high physicochemical stability and amenability to phage display, facilitate the selection of VNAR binders to challenging targets. Here, we explored the unique attributes of these single domains for potential application as bioprocessing reagents in the development of the SEED-Fc platform, designed to generate therapeutic bispecific antibodies. A panel of unique VNARs specific to the SEED homodimeric (monospecific) 'by-products' were isolated from a shark semi-synthetic VNAR library via phage display. The lead VNAR candidate exhibited low nanomolar affinity and superior selectivity to SEED homodimer, with functionality being retained upon exposure to extreme physicochemical conditions that mimic their applicability as purification agents. Ultimately, this work exemplifies the robustness of the semi-synthetic VNAR platform, the predisposition of the VNAR paratope to recognise novel epitopes and the potential for routine generation of tailor-made VNAR-based bioprocessing reagents.
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Affiliation(s)
- Magdalena J Buschhaus
- Elasmogen Ltd, Liberty Building, Foresterhill Health Campus, Foresterhill Road, Aberdeen AB25 2ZP, UK
| | - Stefan Becker
- Merck Biopharma KGaA, Protein Engineering & Antibody Technologies, Global Research and Development, Frankfurter Str. 250 Darmstadt 64293, Germany
| | - Andrew J Porter
- Elasmogen Ltd, Liberty Building, Foresterhill Health Campus, Foresterhill Road, Aberdeen AB25 2ZP, UK.,Department of Molecular and Cell Biology, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Caroline J Barelle
- Elasmogen Ltd, Liberty Building, Foresterhill Health Campus, Foresterhill Road, Aberdeen AB25 2ZP, UK
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Fu J, Li J, Wang W, Wu H, Zhou P, Li Y, He Q, Tu Z. One-step orientated immobilization of nanobodies and its application for immunoglobulin purification. J Chromatogr A 2019; 1603:15-22. [DOI: 10.1016/j.chroma.2019.06.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 01/08/2023]
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8
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Ramos‐de‐la‐Peña AM, González‐Valdez J, Aguilar O. Protein A chromatography: Challenges and progress in the purification of monoclonal antibodies. J Sep Sci 2019; 42:1816-1827. [DOI: 10.1002/jssc.201800963] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 02/15/2019] [Accepted: 02/24/2019] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Oscar Aguilar
- Tecnologico de MonterreySchool of Engineering and Science Monterrey NL Mexico
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Affiliation(s)
- Nika Kruljec
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
| | - Tomaž Bratkovič
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
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10
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Tu Z, Chen Q, Li Y, Xiong Y, Xu Y, Hu N, Tao Y. Identification and characterization of species-specific nanobodies for the detection of Listeria monocytogenes in milk. Anal Biochem 2016; 493:1-7. [DOI: 10.1016/j.ab.2015.09.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/29/2015] [Accepted: 09/30/2015] [Indexed: 10/22/2022]
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