Abstract
Mouse monoclonal antibodies to health-threatening botulinum neurotoxins (BoNTs) of types A, B, E, and F have been produced and characterized. The antibodies are capable of interacting with a toxin inside the respective natural toxic complex. A sandwich ELISA for the quantitative detection of botulotoxins has been developed on based on the antibodies. The detection limits of the test systems for BoNTs A, B, E, and F is 0.4, 0.5, 0.1, and 2.4 ng/ml, respectively. The assay quantitatively detects BoNTs in canned meat and vegetables. Two antibodies, BNTA-4.1 and BNTA-9.1, both separately and in combination, are capable of neutralizing the natural botulinum toxic complex of type A in vivo; a combination of antibodies neutralizes a higher dose of the toxin. It has been shown that the antibody BNTA-4.1 binds specifically to the light (catalytic) chain of the toxin, and the antibody BNTA-9.1 interacts with the heavy chain. We believe that monoclonal antibodies BNTA-4.1 and BNTA-9.1 hold promise for developing therapeutic antibodies to treat BoNT/A-caused botulism in an emergency.
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Abbreviations
- BoNT/A, BoNT/B, BoNT/E, and BoNT/F:
-
botulinum neurotoxins of types A, B, E, and F
- FCS:
-
fetal calf serum
- PCR:
-
polymerase chain reaction
- PBS:
-
phosphate-buffered saline
- PBST:
-
PBS with 0.1% Tween-20
- mABs:
-
monoclonal antibodies
- MLD:
-
minimum lethal dose
- ELISA:
-
enzyme-linked immunosorbent assay
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Original Russian Text © S.G. Abbasova, N.V. Rudenko, A.Yu. Gorokhovatskii, M.V. Kapralova, I.D. Vinogradova, Yu.V. Vertiev, V.A. Nesmeyanov, E.V. Grishin, 2011, published in Bioorganicheskaya Khimiya, 2011, Vol. 37, No. 3, pp. 344–353.
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Abbasova, S.G., Rudenko, N.V., Gorokhovatskii, A.Y. et al. Monoclonal antibodies to botulinum neurotoxins of types A, B, E, and F. Russ J Bioorg Chem 37, 307–315 (2011). https://doi.org/10.1134/S1068162011030022
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DOI: https://doi.org/10.1134/S1068162011030022