Specific antibody for pesticide residue determination produced by antibody-pesticide complex.
A new method for specific antibody production was developed using antibody (Ab)-pesticide complex as a unique immunogen. Parathion (PA) was the targeted pesticide, and rabbit polyclonal antibody (Pab) and mouse monoclonal antibody (Mab) were used as carrier proteins. The Ab-PA complexes were generated by conjugating the two antibodies with an excessive dosage of PA. It was shown that the sensitivity of homologous enzyme-linked immunosorbent assay (ELISA) using the new antibodies was similar to that using original antibodies. However, the new mouse Pab had not only similar positive recognizing spectrum as the original Mab, but also a significantly improved sensitivity in heterologous ELISA when some recognizable competitors were applied. IC(50) value of ELISA based on a combination of the new mouse Pab and hapten 9 was 0.24 ng/mL, which was 445.54 times as that of the homologous ELISA. An Ab-pesticide complex may be a suitable alternative immunogen for producing highly specific antibody to improve the immunoassay sensitivity.
Liu
Yi H
YH
Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, China.
Chen
Jian
J
Wang
Chun M
CM
Guo
Yi R
YR
Liang
Xiao
X
Zhu
Guo N
GN
D000818:Animals; D000911:Antibodies, Monoclonal / Q000032:analysis / Q000276:immunology; D000936:Antigen-Antibody Complex / Q000032:analysis* / Q000276:immunology*; D002851:Chromatography, High Pressure Liquid; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006241:Haptens / Q000032:analysis / Q000276:immunology; D020128:Inhibitory Concentration 50; D051379:Mice; D008807:Mice, Inbred BALB C; D010278:Parathion / Q000032:analysis / Q000276:immunology; D010573:Pesticide Residues / Q000032:analysis* / Q000276:immunology*; D011817:Rabbits
D000911:Antibodies, Monoclonal; D000936:Antigen-Antibody Complex; D006241:Haptens; D010573:Pesticide Residues; D010278:Parathion