Pastucha, Matej and Odstrcilikova, Eliska and Hlavacek, Antonin and Brandmeier, Julian C. and Vykoukal, Vit and Weisova, Julie and Gorris, Hans H. and Skladal, Petr and Farka, Zdenek (2021) Upconversion-Linked Immunoassay for the Diagnosis of Honeybee Disease American Foulbrood. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 27 (5): 6900311. ISSN 1077-260X, 1558-4542
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American foulbrood (AFB) caused by the bacterium Paenibacillus larvae is the most destructive disease of the honeybee brood. Therefore, rapid and sensitive detection methods are required to limit spreading of this pathogen, which has a major impact on agriculture and biodiversity. While P. larvae is typically detected by microbial cultivation or polymerase chain reaction, antibody-based detection represents a viable alternative. Here, we prepared an antibody specific for P. larvae and used it for the development of an upconversion-linked immunosorbent assay (ULISA). Photon-upconversion nanoparticles (UCNP) were conjugated to streptavidin via a PEG-linker using copper-catalyzed click chemistry to replace the enzyme label in conventional enzyme-linked immunosorbent assay (ELISA). The ULISA showed low cross-reactivity and provided a limit of detection of 2.9 x 10(3) CFU/mL, representing a 22-fold improvement compared to the ELISA. This level is within the bacterial loads present in honeybee larvae during an AFB infection. The assay was successfully applied to the analysis of spiked samples of bees, larvae, and hive debris.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | American foulbrood; bacterial pathogens; Paenibacillus larvae; photon-upconversion nanoparticle; upconversion-linked immunosorbent assay |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Sep 2022 09:17 |
| Last Modified: | 07 Sep 2022 09:17 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47345 |
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