Parallel detection and quantitative analysis of specific binding of proteins by oblique-incidence reflectivity difference technique in label-free format

In this work,we parallelly detected the specific binding between microarray targets including 12 different kinds of proteins and the probe solution containing five corresponding antibodies and quantitatively analyzed the interactions between CDH13 and solution phase anti-CDH13 at six different probe concentrations by oblique-incidence reflectivity difference(OIRD)method in label-free format.The detection sensitivity reached 10 ng/mL.The experimental results indicate that the OIRD method is a promising and competing technique not only in research work but also in clinic.