A Monoclonal Antibody to the Trichothecene T‐2 Toxin: Screening for the Antibody by a Direct Enzyme Immunoassay
- 12 January 1987
- journal article
- research article
- Published by Wiley in Journal of Veterinary Medicine, Series B
- Vol. 34 (1-10) , 538-544
- https://doi.org/10.1111/j.1439-0450.1987.tb00430.x
Abstract
Summary: A new method for the screening of monoclonal antibodies to mycotoxins was developed using a double antibody solid phase in a direct enzyme immunoassay. Wells of microtitre plates were coated with affinity‐purified anti‐mouse IgG antiserum. The monoclonal antibody against the trichothecene T‐2 toxin bound to this solid phase was detected by reaction with an HT‐2 toxin‐peroxidase conjugate. The monoclonal antibody belongs to the IgG 1 subclass and has a detection limit for T‐2 toxin of 50ng/ml in a competitive direct enzyme immunoassay. The relative cross‐reactivity with acetyl T‐2, HT‐2, iso T‐2, T‐2 triol and T‐2 tetraol‐tetraacetate was 0.75, 0.35, 0.35, 0.22 and 0.01, respectively. No cross‐reactions with other trichothecenes could be found.Zusammenfassung: Ein monoklonaler Antikörper gegen das Trichothecen T‐2 Toxin: Screening des Antikörpers mit einem direkten EnzymimmunoassayFür das Screening von monoklonalen Antikörpern gegen Mykotoxine wurde eine neue Methode entwickelt.Es wird ein direkter Enzymimmunoassay mit einer “Double antibody solid phase” verwendet, bei dem die Kavitäten der Mikrotiterplatte mit affinitätschromatographisch gereinigtem Anti‐Maus IgG‐Antiserum beschichtet werden. Der gebundene monoklonale Antikörper gegen T‐2 Toxin wurde durch die Reaktion mit einem HT‐2 Toxin‐Peroxidase‐Konjugat nachgewiesen.Der monoklonale Antikörper gehörte zur IgG 1‐Subklasse und hatte im direkten kompetitiven Enzymimmunoassay eine Nachweisgrenze von 50 ng/ml für T‐2 Toxin. Die relative Kreuzreaktivität mit Acetyl T‐2, HT‐2, Iso T‐2, T‐2 Triol und T‐2 Tetraoltetraacetat betrug 0,75, 0,35, 0,35, 0,22 und 0,01. Mit anderen Trichothecenen wurden keine Kreuzreaktionen gefunden.Keywords
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