Fy. Yu et Fs. Chu, Production and characterization of a monoclonal anti-anti-idiotype antibody against fumonisin B-1, J AGR FOOD, 47(11), 1999, pp. 4815-4820
A monoclonal anti-anti-idiotype antibody (mAb3) against fumonisin B-1 (FmB1
) was produced from the hybridoma cell line 7C7F4, which was generated by t
he fusion of P3/NS-1/1-AG4-1 myeloma cells with spleen cells isolated from
a Balb/c mouse that had been immunized with the Fab fragments of affinity-p
urified anti-idiotype antibodies. The mAb3 belongs to the immunoglobulin M,
kappa light chain. A direct competitive enzyme-linked immunosorbent assay
(dc-ELISA) and an indirect competitive ELISA (idc-ELISA) were established f
or antibody characterization and toxin analysis. In an idc-ELISA using FmB1
-ovalbumin (OVA) as the coating antigen, the concentrations causing 50% inh
ibition of binding (IC50) of mAb3 to the solid-phase FmB1-OVA by free FmB1,
FmB2, and FmB3 were found to be 75, 95, and 450 ng/mL, respectively. In th
e dc-ELISA, the concentration causing IC50 of FmB1-horseradish peroxidase t
o the solid-phase mAb3 by free FmB1 was found to be 233 ng/mL. Analysis of
12 samples naturally contaminated with fumonisins with mAb3-based idc-ELISA
and polyclonal-based dc-ELISA showed a good correlation between these two
methods with a correlation coefficient of 0.76 at p < 0.02. The linear regr
ession slope was found to be y[polyclonal ELISA] = 0.87x[mAb3 ELISA] - 52 p
pb.