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Trier NH, Friis T. Production of Antibodies to Peptide Targets Using Hybridoma Technology. Methods Mol Biol 2024; 2821:135-156. [PMID: 38997486 DOI: 10.1007/978-1-0716-3914-6_11] [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] [Indexed: 07/14/2024]
Abstract
Hybridoma technology is a well-established and indispensable tool for generating high-quality monoclonal antibodies and has become one of the most common methods for monoclonal antibody production. In this process, antibody-producing B cells are isolated from mice following immunization of mice with a specific immunogen and fused with an immortal myeloma cell line to form antibody-producing hybridoma cell lines. Hybridoma-derived monoclonal antibodies not only serve as powerful research and diagnostic reagents but have also emerged as the most rapidly expanding class of therapeutic biologicals. In spite of the development of new high-throughput monoclonal antibody generation technologies, hybridoma technology still is applied for antibody production due to its ability to preserve innate functions of immune cells and to preserve natural cognate antibody paring information. In this chapter, an overview of hybridoma technology and the laboratory procedures used for hybridoma production and antibody screening of peptide-specific antibodies are presented.
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Affiliation(s)
| | - Tina Friis
- Department of Congenital Disorders, Statens Serum Institut, Copenhagen S, Denmark
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Li Z, Jallow A, Nidiaye S, Huang Y, Zhang Q, Li P, Tang X. Improvement of the sensitivity of lateral flow systems for detecting mycotoxins: Up-to-date strategies and future perspectives. Compr Rev Food Sci Food Saf 2024; 23:e13255. [PMID: 38284606 DOI: 10.1111/1541-4337.13255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/05/2023] [Accepted: 09/30/2023] [Indexed: 01/30/2024]
Abstract
Mycotoxins are dangerous human and animal health-threatening secondary fungal metabolites that can be found in various food and agricultural products. Several countries have established regulations to restrict their presence in food and agricultural products destined for human and animal consumption. Consequently, the need to develop highly sensitive and smart detection systems was recognized worldwide. Lateral flow assay possesses the advantages of easy operation, rapidity, stability, accuracy, and specificity, and it plays an important role in the detection of mycotoxins. Nevertheless, strategies to comprehensively improve the sensitivity of lateral flow assay to mycotoxins in food have rarely been highlighted and discussed. In this article, a comprehensive overview was presented on the application of lateral flow assay in mycotoxin detection in food samples by highlighting the principle of lateral flow assay, presenting a detailed discussion on various analytical performance-improvement strategies, such as the development of high-affinity recognition reagents, immunogen immobilization methods, and signal amplification. Additionally, a detailed discussion on the various signal analyzers and interpretation approaches was provided. Finally, current hurdles and future perspectives on the application of lateral flow assay in the detection of mycotoxins were discussed.
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Affiliation(s)
- Zhiqiang Li
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oil seed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, China
| | - Abdoulie Jallow
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oil seed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, China
| | - Seyni Nidiaye
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oil seed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, China
| | - Yi Huang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oil seed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, China
| | - Qi Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oil seed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, China
- Food Safety Research Institute, HuBei University, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
| | - Peiwu Li
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oil seed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, China
- Food Safety Research Institute, HuBei University, Wuhan, China
- Hubei Hongshan Laboratory, Wuhan, China
- Xianghu Laboratory, Hangzhou, China
| | - Xiaoqian Tang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs; Laboratory of Risk Assessment for Oilseed Products (Wuhan), Ministry of Agriculture and Rural Affairs; Quality Inspection and Test Center for Oil seed Products, Ministry of Agriculture and Rural Affairs; Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, China
- Food Safety Research Institute, HuBei University, Wuhan, China
- Xianghu Laboratory, Hangzhou, China
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3
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Wei L, Xu D, Yuan B, Pang C, Xu H, Nie K, Yang Q, Ozkan SA, Zhang Y, Guo Y, Sun X. A Dynamic and Pseudo-Homogeneous MBs-icELISA for the Early Detection of Aflatoxin B 1 in Food and Feed. Toxins (Basel) 2023; 15:660. [PMID: 37999523 PMCID: PMC10675393 DOI: 10.3390/toxins15110660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/25/2023] Open
Abstract
Aflatoxin B1 (AFB1) is one of the most toxic and harmful fungal toxins to humans and animals, and the fundamental way to prevent its entry into humans is to detect its presence in advance. In this paper, the monoclonal antibody mAbA2-2 was obtained via three-step sample amplification and multi-concentration standard detection using a subcloning method based on the limited dilution method with AFB1 as the target. A dynamic and pseucdo-homogeneous magnetic beads enzyme-linked immunosorbent assay (MBs-icELISA) was established using the prepared antibody as the recognition element and immunomagnetic beads as the antigen carrier. The MBs-icELISA showed good linear correlation in the concentration range of 0.004-10 ng/mL with R2 = 0.99396. The limit of detection (LOD) of the MBs-icELISA for AFB1 was 0.0013 ng/mL. This new ELISA strategy significantly shortened AFB1 detection time through improved sensitivity compared to the conventional ELISA method.
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Affiliation(s)
- Lin Wei
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Deyan Xu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Bei Yuan
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Chengchen Pang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Haitao Xu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Kunying Nie
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Qingqing Yang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Sibel A. Ozkan
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560 Ankara, Türkiye;
| | - Yanyan Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Yemin Guo
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
| | - Xia Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun West Road, Zibo 255049, China; (L.W.); (D.X.); (B.Y.); (C.P.); (H.X.); (K.N.); (Y.Z.); (Y.G.); (X.S.)
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, No. 266 Xincun West Road, Zibo 255049, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, No. 266 Xincun West Road, Zibo 255049, China
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Alves-Mondini C, Beltramino M, Jiacomini IG, Karim-Silva S, Dos Santos Antunes N, de Moura J, Aubrey N, Billiald P, Machado-de-Ávila RA, Alvarenga LM, Becker-Finco A. Identification of a common epitope in knottins and phospholipases D present in Loxosceles sp venom by a monoclonal antibody. Int J Biol Macromol 2023; 246:125588. [PMID: 37399872 DOI: 10.1016/j.ijbiomac.2023.125588] [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: 02/24/2023] [Revised: 04/17/2023] [Accepted: 06/25/2023] [Indexed: 07/05/2023]
Abstract
In the Americas and specially in Brazil, the Loxosceles intermedia, Loxosceles gaucho and Loxosceles laeta are the three most medically relevant brown spider species, and whose bites can lead to the condition known as loxoscelism. Here, we report the development of a tool capable of identifying a common epitope amongst Loxosceles sp. venom's toxins. A murine monoclonal antibody (LmAb12) and its recombinant fragments (scFv12P and diabody12P) have been produced and characterized. This antibody and its recombinant constructs were able to recognize proteins of Loxosceles spider venoms with specificity. The scFv12P variant was also able to detect low concentrations of Loxosceles venom in a competitive ELISA assay, displaying potential as a venom identification tool. The primary antigenic target of LmAb12 is a knottin, a venom neurotoxin, that has a shared identity of 100 % between the L. intermedia and L. gaucho species and high similarity to L. laeta. Furthermore, we observed LmAb12 was able to partially inhibit in vitro hemolysis, a cellular event typically induced by the Loxosceles sp. venoms. Such behavior might be due to LmAb12 cross-reactivity between the antigenic target of LmAb12 and the venom's dermonecrotic toxins, the PLDs, or even the existence of synergism between these two toxins.
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Affiliation(s)
- Camila Alves-Mondini
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil
| | - Martina Beltramino
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil
| | - Isabella Gizzi Jiacomini
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil; Université de Tours - INRA, UMR 1282, Faculté de Pharmacie, 31 Avenue Monge, 37200 Tours Cedex, France
| | - Sabrina Karim-Silva
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil
| | - Nicolle Dos Santos Antunes
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil
| | - Juliana de Moura
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil
| | - Nicolas Aubrey
- Université de Tours - INRA, UMR 1282, Faculté de Pharmacie, 31 Avenue Monge, 37200 Tours Cedex, France
| | - Philippe Billiald
- LVTS, INSERM UMR S1148, Paris & Université Paris-Saclay, School of Pharmacy, 91400 Orsay, France
| | - Ricardo Andrez Machado-de-Ávila
- Programa de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Universitário, 88806-000 Criciúma, Santa Catarina, Brazil
| | - Larissa M Alvarenga
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil.
| | - Alessandra Becker-Finco
- Universidade Federal do Paraná, Departamento de Patologia Básica, Laboratório de Imunoquímica, Curitiba, PR, Brazil
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Kim M, Foster JC, Moore MD, Chen M. Improving Single-Molecule Antibody Detection Selectivity through Optimization of Peptide Epitope Presentation in OmpG Nanopore. ACS Sens 2023. [PMID: 37379512 DOI: 10.1021/acssensors.3c00528] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
Outer membrane protein G (OmpG) is a monomeric porin found in Escherichia coli, which possesses seven flexible loops. OmpG has been engineered as a nanopore sensor, where its loops can host affinity epitopes for selective detection of biological molecules. In this study, we investigated various loop positions to incorporate a FLAG peptide antigen epitope in the most flexible loop 6 and tested the efficacy and sensitivity of these nanopore constructs in antibody detection. We observed an OmpG construct containing inserted FLAG sequence, which exhibited strong interaction with anti-FLAG antibodies in flow cytometry; however, it could not translate molecule interactions into a readable signal in current recordings. Further optimization of the peptide presentation strategy by replacing specific sections of loop 6 sequences with the FLAG tag created a construct capable of generating unique and distinct signals when interacting with various monoclonal or polyclonal anti-FLAG clones IgG antibodies in the mixture. The peptide display scheme demonstrated in this study can be generalized for the engineering of OmpG sensors, which can be used for screening and validating positive clones during antibody development, as well as for real-time quality control of cell cultures in monoclonal antibody production.
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Affiliation(s)
- Minji Kim
- Department of Food Science, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Joshua C Foster
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Matthew D Moore
- Department of Food Science, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Min Chen
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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Sakaguchi A, Tanaka Y, Shoji E, Takeshima T, Sakamaki R, Matsuba T, Kurihara Y. Rapid, simple, and effective strategy to produce monoclonal antibodies targeting protein structures using hybridoma technology. J Biol Eng 2023; 17:24. [PMID: 36997993 DOI: 10.1186/s13036-023-00345-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/22/2023] [Indexed: 04/01/2023] Open
Abstract
BACKGROUND Monoclonal antibodies are essential in life science research and developing antibody drugs and test drugs. Various methods have been developed to obtain monoclonal antibodies, among which hybridoma technology continues to be widely used. However, developing a rapid and efficient method for obtaining conformation-specific antibodies using hybridoma technology remains challenging. We previously developed the membrane-type immunoglobulin-directed hybridoma screening (MIHS) method, which is a flow cytometry-based screening technique based on the interaction between the B-cell receptor expressed on the hybridoma cell surface and the antigen protein, to obtain conformation-specific antibodies. RESULTS In this study, we proposed a streptavidin-anchored ELISA screening technology (SAST) as a secondary screening method that retains the advantages of the MIHS method. Anti-enhanced green fluorescent protein monoclonal antibodies were generated as a model experiment, and their structural recognition abilities were examined. Examination of the reaction profiles showed that all monoclonal antibodies obtained in this study recognize the conformational epitopes of the protein antigen. Furthermore, these monoclonal antibodies were classified into two groups: those with binding activities against partially denatured proteins and those with complete loss of binding activities. Next, when screening monoclonal antibodies by the MIHS method as the first screening, we found that monoclonal antibodies with stronger binding constants may be selected by double-staining for hybridomas with fluorescently labeled target antigens and fluorescently labeled B cell receptor antibodies. CONCLUSIONS The proposed two-step screening method, which incorporates MIHS and SAST, constitutes a rapid, simple, and effective strategy to obtain conformation-specific monoclonal antibodies generated through hybridoma technology. The novel monoclonal antibody screening strategy reported herein could accelerate the development of antibody drugs and antibody tests.
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Affiliation(s)
- Atsumi Sakaguchi
- Laboratory of Molecular Biology, Faculty of Engineering, Yokohama National University, 79-5, Tokiwadai, Hodogaya, Yokohama, Kanagawa, 240-8501, Japan
- Biomaterials Analysis Division, Open Facility Center, Tokyo Institute of Technology, Midori, Yokohama, Kanagawa, Japan
| | - Yoichiro Tanaka
- Instrumental Analysis Center, Yokohama National University, Hodogaya, Yokohama, Kanagawa, Japan
| | - Eiki Shoji
- Laboratory of Molecular Biology, Faculty of Engineering, Yokohama National University, 79-5, Tokiwadai, Hodogaya, Yokohama, Kanagawa, 240-8501, Japan
| | - Teppei Takeshima
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - Rina Sakamaki
- Bioscience Division, Tosoh Corporation, Ebina, Kanagawa, Japan
| | - Takao Matsuba
- Bioscience Division, Tosoh Corporation, Ebina, Kanagawa, Japan
| | - Yasuyuki Kurihara
- Laboratory of Molecular Biology, Faculty of Engineering, Yokohama National University, 79-5, Tokiwadai, Hodogaya, Yokohama, Kanagawa, 240-8501, Japan.
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Li Y, Li P, Ke Y, Yu X, Yu W, Wen K, Shen J, Wang Z. Monoclonal Antibody Discovery Based on Precise Selection of Single Transgenic Hybridomas with an On-Cell-Surface and Antigen-Specific Anchor. ACS APPLIED MATERIALS & INTERFACES 2022; 14:17128-17141. [PMID: 35385643 DOI: 10.1021/acsami.2c02299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hybridoma technology is widely used for monoclonal antibody (mAb) discovery, whereas the generation and identification of single hybridomas by the limiting dilution method (LDM) are tedious, inefficient, and time- and cost-consuming, especially for hapten molecules. Here, we describe a single transgenic hybridoma selection method (STHSM) that employs a transgenic Sp2/0 with an artificial and stable on-cell-surface anchor. The anchor was designed by combining the truncated variant transmembrane domain of EGFR with a biotin acceptor peptide AVI-tag, which was stably integrated into the genome of Sp2/0 via a piggyBac transposon. To ensure the subsequent precise selection of the hybridoma, the number of on-cell-surface anchors of the transfected Sp2/0 for fusion with immunized splenocytes was further normalized by flow cytometry at the single cell level. Then the single antigen-specific transgenic hybridomas were precisely identified and automatically selected using a CellenONE platform based on the fluorescence assay of the on-cell-surface anchor with the corresponding secreted antigen-specific mAb. The STHSM produced 579 single chloramphenicol (CAP)-specific transgenic hybridomas with a positive rate of 62.7% in 10 plates within 2 h by one-step selection, while only 12 single CAP-specific hybridomas with a positive rate of 6.3% in 40 plates required at least 32 days using the LDM with multiple subcloning steps. The best affinity of mAbs from the STHSM was more than 2-fold higher than that of those from the LDM, and this was mainly due to the preaffinity selection based on the on-cell-surface anchors and more interactions between the mAb and CAP. Then the mAbs from the STHSM and LDM were used to develop an immunoassay for CAP in spiked and natural biological samples. The method displayed satisfactory sensitivity, accuracy, and precision, demonstrating that the STHSM we developed is a versatile, practical, and efficient method for mAb discovery.
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Affiliation(s)
- Yuan Li
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, China
| | - Peipei Li
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, China
| | - Yuebin Ke
- Key Laboratory of Molecular Epidemiology of Shenzhen, Shenzhen Center for Disease Control and Prevention, 518000 Shenzhen, China
| | - Xuezhi Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, China
| | - Wenbo Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, China
| | - Kai Wen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, China
| | - Jianzhong Shen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, China
| | - Zhanhui Wang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, 100193 Beijing, China
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8
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Fang S, Yang H, Liu C, Tian Y, Wu M, Wu Y, Liu Q. Bacterial coloration immunofluorescence strip for ultrasensitive rapid detection of bacterial antibodies and targeted antibody-secreting hybridomas. J Immunol Methods 2022; 501:113208. [PMID: 34933017 DOI: 10.1016/j.jim.2021.113208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/15/2021] [Indexed: 01/06/2023]
Abstract
The indirect enzyme-linked immunosorbent assay (ELISA) is the gold standard method for monoclonal antibody (McAb) detection and plays a unique role in the preparation of bacterial antibodies. To solve the laborious issues associated with indirect ELISA, a novel bacterial coloration immunofluorescence strip (BCIFS) for antibody detection using colored bacteria instead of a labeled antibody as the antigen and tracer simultaneously and goat anti-mouse IgG as the test line was developed. The affinity range survey of BCIFS indicated that hybridoma cell cultures of E. coli O157:H7 (D3, E7) and Vibrio parahemolyticus (H7, C9) were detected, which complied with the results of indirect ELISA. Compared with the traditional indirect ELISA, the BCIFS sensitivity for E7 cell cultures, ascites, and purified antibodies was at least 4-fold more sensitive, and the BCIFS cross-reactivity for E7 cell cultures was almost consistent with that of indirect ELISA. In addition, the BCIFS isotypes for E. coli O157:H7 cell cultures and Vibrio parahemolyticus were IgG2a and IgG1, respectively, which were identical to the indirect ELISA. Furthermore, the BCIFS method was confirmed by McAb preparation, effective antibody use, and targeted antibody-secreted hybridoma preparation and screening, which showed excellent performance and substitution of the indirect ELISA method. Combined with methylcellulose semisolid medium, BCIFS offers a novel, easy to operate, rapid preparation method for antigen-specific hybridomas. This is the first report using BCIFS instead of indirect ELISA for bacterial antibody detection and application in different samples, which demonstrates a rapid and powerful tool for antibody engineering.
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Affiliation(s)
- Shuiqin Fang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; College of Food and Bioengineering, Bengbu University, Bengbu 233030, China
| | - Hao Yang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Cheng Liu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yachen Tian
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Meijiao Wu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Youxue Wu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Qing Liu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
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