Iron Oxide Nanoparticles Conjugated Monoclonal Antibody for Immunochromatographic Strip Test

摘要

In this study, the synthesis of iron oxide nanoparticles (IONPs) and immunochromatographic (ICG) strip test of iron oxide conjugated with monoclonal antibody (IONPs-Ab) have been developed. The IONPs were synthesised using precipitation method and dispersed in water by applying polyethylene glycol coating. Several parameters that affected conjugations of the IONPs-Ab were studied namely iron oxide concentration, antibody volume, stabilizer concentration and the amount of SiPEG coating. From the transmission electron microscopy (TEM) image, the size of IONPs obtained was ～14 nm. Conjugate was tested with the ICG strip test lined with the antigen. The results showed 1.0μl SiPEG coating, 1 M IONPs concentration, 20μl of 1mg/ml antibody volume and 1% bovine serum albumin (BSA) were the optimum. Moreover, the IONPs-Ab was also tested with the Brugian filariasis positive and negative serum samples. The results showed positive result for the patient serum and negative result for the non-patient serum in just 15 minutes.