Bead-based microarray immunoassay for lung cancer biomarkers using quantum dots as labels
Abstract(#br)In this study, we developed a multiplex immunoassay system that combines the suspension and planar microarray formats within a single layer of polydimethylsiloxane (PDMS) using soft lithography technology. The suspension format was based on the target proteins forming a sandwich structure between the magnetic beads and the quantum dot (QD) probes through specific antibody–antigen interactions. The planar microarray format was produced by fabricating an array of micro-wells in PDMS.