The quantitative structure-activity relationship （QSAR） of 14 phenoxybenzoic acid derivatives was studied by ab initio method at the HF/6-31G level using Guassian03 software. The optimized structures together with s...The quantitative structure-activity relationship （QSAR） of 14 phenoxybenzoic acid derivatives was studied by ab initio method at the HF/6-31G level using Guassian03 software. The optimized structures together with some characteristic and electric parameters of the title compounds were obtained; some stereo-parameters were calculated by HyperChem software. Stepwise multiple regression and principal component regression methods are adopted to establish multi-parametric models between biological activity and parameters. The results indicated that the lager Ehomo, M, V and LogP, the smaller Etumo and S, and the higher biological activity. A theoretical direction was provided to synthesize some compounds with high activity.展开更多
Anti-idiotypic antibodies which can mimic antigens have many potential applications in the immunoassay.This research used the monoclonal antibody of the conserved chemical region of pyrethroids,3-phenoxybenzoic acid(P...Anti-idiotypic antibodies which can mimic antigens have many potential applications in the immunoassay.This research used the monoclonal antibody of the conserved chemical region of pyrethroids,3-phenoxybenzoic acid(PBA),and the domain antibody library to develop an environmentally-friendly immunoassay for the detection of pyrethroids.The domain antibodies(A8,B8,and C6)which bound to anti-PBA monoclonal antibody(MAb)were isolated from a naive phage display human domain antibody library.This domain antibody is cloneable,pyrethroid-free,and applicable as a competitive mimetic antigen in the immunoassay.The best immunoassay was achieved using A8,resulting in IC50 of 0.714μg/mL for PBA,1.775μg/mL for Cypermethrin,1.624μg/mL forβ-cypermethrin,3.675μg/mL for Fenvalerate,and 4.895μg/mL for Flucythrinate.This way of selecting anti-idiotypic antibodies to detect pyrethroids could provide potential applications in developing immunoassays for identifying various chemical contaminants in food.展开更多
基金This work was supported by the Natural Science Foundation of Fujian Province (X0650070)
文摘The quantitative structure-activity relationship （QSAR） of 14 phenoxybenzoic acid derivatives was studied by ab initio method at the HF/6-31G level using Guassian03 software. The optimized structures together with some characteristic and electric parameters of the title compounds were obtained; some stereo-parameters were calculated by HyperChem software. Stepwise multiple regression and principal component regression methods are adopted to establish multi-parametric models between biological activity and parameters. The results indicated that the lager Ehomo, M, V and LogP, the smaller Etumo and S, and the higher biological activity. A theoretical direction was provided to synthesize some compounds with high activity.
基金This work was supported by Key Science and Technology Project in Henan Province(202102110061,202102110060,182102110423)High Level Talent Research Project of Henan Institute of Science and Technology(2016018,2016019).
文摘Anti-idiotypic antibodies which can mimic antigens have many potential applications in the immunoassay.This research used the monoclonal antibody of the conserved chemical region of pyrethroids,3-phenoxybenzoic acid(PBA),and the domain antibody library to develop an environmentally-friendly immunoassay for the detection of pyrethroids.The domain antibodies(A8,B8,and C6)which bound to anti-PBA monoclonal antibody(MAb)were isolated from a naive phage display human domain antibody library.This domain antibody is cloneable,pyrethroid-free,and applicable as a competitive mimetic antigen in the immunoassay.The best immunoassay was achieved using A8,resulting in IC50 of 0.714μg/mL for PBA,1.775μg/mL for Cypermethrin,1.624μg/mL forβ-cypermethrin,3.675μg/mL for Fenvalerate,and 4.895μg/mL for Flucythrinate.This way of selecting anti-idiotypic antibodies to detect pyrethroids could provide potential applications in developing immunoassays for identifying various chemical contaminants in food.
