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Liao X, Wang J, Guo B, Bai M, Zhang Y, Yu G, Wang P, Wei J, Wang J, Yan X, Fan K, Wang Y. Enhancing Nanobody Immunoassays through Ferritin Fusion: Construction of a Salmonella-Specific Fenobody for Improved Avidity and Sensitivity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:14967-14974. [PMID: 38957086 DOI: 10.1021/acs.jafc.4c03606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Nanobodies (Nbs) serve as powerful tools in immunoassays. However, their small size and monovalent properties pose challenges for practical application. Multimerization emerges as a significant strategy to address these limitations, enhancing the utilization of nanobodies in immunoassays. Herein, we report the construction of a Salmonella-specific fenobody (Fb) through the fusion of a nanobody to ferritin, resulting in a self-assembled 24-valent nanocage-like structure. The fenobody exhibits a 35-fold increase in avidity compared to the conventional nanobody while retaining good thermostability and specificity. Leveraging this advancement, three ELISA modes were designed using Fb as the capture antibody, along with unmodified Nb422 (FbNb-ELISA), biotinylated Nb422 (FbBio-ELISA), and phage-displayed Nb422 (FbP-ELISA) as the detection antibody, respectively. Notably, the FbNb-ELISA demonstrates a detection limit (LOD) of 3.56 × 104 CFU/mL, which is 16-fold lower than that of FbBio-ELISA and similar to FbP-ELISA. Moreover, a fenobody and nanobody sandwich chemiluminescent enzyme immunoassay (FbNb-CLISA) was developed by replacing the TMB chromogenic substrate with luminal, resulting in a 12-fold reduction in the LOD. Overall, the ferritin-displayed technology represents a promising methodology for enhancing the detection performance of nanobody-based sandwich ELISAs, thereby expanding the applicability of Nbs in food detection and other fields requiring multivalent modification.
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Affiliation(s)
- Xingrui Liao
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Jiamin Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Bing Guo
- College of Life Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mengfan Bai
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Yao Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Gege Yu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Peng Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Juan Wei
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
| | - Xiyun Yan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules (CAS), CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Kelong Fan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules (CAS), CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- Nanozyme Laboratory in Zhongyuan, Henan Academy of Innovations in Medical Science, Zhengzhou, Henan 451163, China
| | - Yanru Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shanxi 712100, China
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Wang Y, Zhang C, Wang J, Knopp D. Recent Progress in Rapid Determination of Mycotoxins Based on Emerging Biorecognition Molecules: A Review. Toxins (Basel) 2022; 14:73. [PMID: 35202100 PMCID: PMC8874725 DOI: 10.3390/toxins14020073] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 12/12/2022] Open
Abstract
Mycotoxins are secondary metabolites produced by fungal species, which pose significant risk to humans and livestock. The mycotoxins which are produced from Aspergillus, Penicillium, and Fusarium are considered most important and therefore regulated in food- and feedstuffs. Analyses are predominantly performed by official laboratory methods in centralized labs by expert technicians. There is an urgent demand for new low-cost, easy-to-use, and portable analytical devices for rapid on-site determination. Most significant advances were realized in the field bioanalytical techniques based on molecular recognition. This review aims to discuss recent progress in the generation of native biomolecules and new bioinspired materials towards mycotoxins for the development of reliable bioreceptor-based analytical methods. After brief presentation of basic knowledge regarding characteristics of most important mycotoxins, the generation, benefits, and limitations of present and emerging biorecognition molecules, such as polyclonal (pAb), monoclonal (mAb), recombinant antibodies (rAb), aptamers, short peptides, and molecularly imprinted polymers (MIPs), are discussed. Hereinafter, the use of binders in different areas of application, including sample preparation, microplate- and tube-based assays, lateral flow devices, and biosensors, is highlighted. Special focus, on a global scale, is placed on commercial availability of single receptor molecules, test-kits, and biosensor platforms using multiplexed bead-based suspension assays and planar biochip arrays. Future outlook is given with special emphasis on new challenges, such as increasing use of rAb based on synthetic and naïve antibody libraries to renounce animal immunization, multiple-analyte test-kits and high-throughput multiplexing, and determination of masked mycotoxins, including stereoisomeric degradation products.
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Affiliation(s)
- Yanru Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.W.); (C.Z.)
| | - Cui Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.W.); (C.Z.)
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Xianyang 712100, China; (Y.W.); (C.Z.)
| | - Dietmar Knopp
- Chair for Analytical Chemistry and Water Chemistry, Institute of Hydrochemistry, Technische Universitat München, Elisabeth-Winterhalter-Weg 6, D-81377 München, Germany
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Brilhante-da-Silva N, de Oliveira Sousa RM, Arruda A, Dos Santos EL, Marinho ACM, Stabeli RG, Fernandes CFC, Pereira SDS. Camelid Single-Domain Antibodies for the Development of Potent Diagnosis Platforms. Mol Diagn Ther 2021; 25:439-456. [PMID: 34146333 DOI: 10.1007/s40291-021-00533-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2021] [Indexed: 11/26/2022]
Abstract
The distinct biophysical and pharmaceutical properties of camelid single-domain antibodies, referred to as VHHs or nanobodies, are associated with their nanometric dimensions, elevated stability, and antigen recognition capacity. These biomolecules can circumvent a number of diagnostic system limitations, especially those related to the size and stability of conventional immunoglobulins currently used in enzyme-linked immunosorbent assays and point-of-care, electrochemical, and imaging assays. In these formats, VHHs are directionally conjugated to different molecules, such as metallic nanoparticles, small peptides, and radioisotopes, which demonstrates their comprehensive versatility. Thus, the application of VHHs in diagnostic systems range from the identification of cancer cells to the detection of degenerative disease biomarkers, viral antigens, bacterial toxins, and insecticides. The improvements of sensitivity and specificity are among the central benefits resulting from the use of VHHs, which are indispensable parameters for high-quality diagnostics. Therefore, this review highlights the main biotechnological advances related to camelid single-domain antibodies and their use in in vitro and in vivo diagnostic approaches for human health.
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Affiliation(s)
- Nairo Brilhante-da-Silva
- Laboratório de Engenharia de Anticorpos, Fundação Oswaldo Cruz, Fiocruz, Unidade Rondônia, Porto Velho, RO, 76812-245, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Instituto Oswaldo Cruz, IOC, Rio de Janeiro, Brazil
| | - Rosa Maria de Oliveira Sousa
- Laboratório de Engenharia de Anticorpos, Fundação Oswaldo Cruz, Fiocruz, Unidade Rondônia, Porto Velho, RO, 76812-245, Brazil
| | - Andrelisse Arruda
- Laboratório de Engenharia de Anticorpos, Fundação Oswaldo Cruz, Fiocruz, Unidade Rondônia, Porto Velho, RO, 76812-245, Brazil
| | - Eliza Lima Dos Santos
- Laboratório de Engenharia de Anticorpos, Fundação Oswaldo Cruz, Fiocruz, Unidade Rondônia, Porto Velho, RO, 76812-245, Brazil
| | - Anna Carolina Machado Marinho
- Plataforma de Desenvolvimento de Anticorpos e Nanocorpos, Fundação Oswaldo Cruz, Fiocruz Ceará, Eusebio, Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Rodrigo Guerino Stabeli
- Plataforma Bi-institucional de Medicina Translacional.Fundação Oswaldo Cruz-USP, Ribeirão Preto, São Paulo, Brazil
| | - Carla Freire Celedonio Fernandes
- Programa de Pós-Graduação em Biologia Celular e Molecular, Instituto Oswaldo Cruz, IOC, Rio de Janeiro, Brazil
- Plataforma de Desenvolvimento de Anticorpos e Nanocorpos, Fundação Oswaldo Cruz, Fiocruz Ceará, Eusebio, Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Soraya Dos Santos Pereira
- Laboratório de Engenharia de Anticorpos, Fundação Oswaldo Cruz, Fiocruz, Unidade Rondônia, Porto Velho, RO, 76812-245, Brazil.
- Programa de Pós-Graduação em Biologia Celular e Molecular, Instituto Oswaldo Cruz, IOC, Rio de Janeiro, Brazil.
- Programa de Pós-graduação em Biologia Experimental, Universidade Federal de Rondônia, Porto Velho, Brazil.
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