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Deoxynivalenol Biosynthesis in Fusarium pseudograminearum Significantly Repressed by a Megabirnavirus
 
 
Article

Preparation of Monoclonal Antibody against Deoxynivalenol and Development of Immunoassays

Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Toxins 2022, 14(8), 533; https://doi.org/10.3390/toxins14080533
Received: 21 June 2022 / Revised: 27 July 2022 / Accepted: 28 July 2022 / Published: 3 August 2022
(This article belongs to the Special Issue Research on Pathogenic Fungi and Mycotoxins in China (Volume II))
Fusarium toxins are the largest group of mycotoxins, which contain more than 140 known secondary metabolites of fungi. Deoxynivalenol (DON) is one of the most important compounds of this class due to its high toxicity and its potential to harm mankind and animals and a widespread contaminant of agricultural commodities, such as wheat, corn, barley, oats, bread, and biscuits. Herein, a hybridoma cell 8G2 secreting mAb against DON was produced by fusing the splenocytes with a tumor cell line Sp2/0. The obtained mAb had a high affinity (2.39 × 109 L/mol) to DON. An indirect competitive Enzyme-Linked Immunosorbent Assay (ic-ELISA) showed that the linear range for DON detection was 3.125–25 μg/mL, and the minimum inhibitory concentration (IC50) was 18.125 μg/mL with a limit of detection (LOD) of 7.875 μg/mL. A colloidal gold nanoparticle (AuNP) with 20 nm in diameter was synthesized for on-site detection of DON within 10 min with vLOD of 20 μg/mL. To improve the limit of detection, the gold nanoflower (AuNF) with a larger size (75 nm) was used to develop the AuNF-based strip with vLOD of 6.67 μg/mL. Compared to the vLOD of a convectional AuNP-based strip, the AuNF-based strip was three times lower. Herein, three immunoassay methods (ic-ELISA and AuNP/AuNF-based strips) were successfully developed, and these methods could be applied for the DON detection in agricultural products. View Full-Text
Keywords: deoxynivalenol; monoclonal antibody; cell fusion; ELISA; immunochromatographic strips deoxynivalenol; monoclonal antibody; cell fusion; ELISA; immunochromatographic strips
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MDPI and ACS Style

Mokhtar, H.E.; Xu, A.; Xu, Y.; Fadlalla, M.H.; Wang, S. Preparation of Monoclonal Antibody against Deoxynivalenol and Development of Immunoassays. Toxins 2022, 14, 533. https://doi.org/10.3390/toxins14080533

AMA Style

Mokhtar HE, Xu A, Xu Y, Fadlalla MH, Wang S. Preparation of Monoclonal Antibody against Deoxynivalenol and Development of Immunoassays. Toxins. 2022; 14(8):533. https://doi.org/10.3390/toxins14080533

Chicago/Turabian Style

Mokhtar, Hoyda Elsir, Aidi Xu, Yang Xu, Mohamed Hassan Fadlalla, and Shihua Wang. 2022. "Preparation of Monoclonal Antibody against Deoxynivalenol and Development of Immunoassays" Toxins 14, no. 8: 533. https://doi.org/10.3390/toxins14080533

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