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In this study, a new sandwich-type biosensor was developed to specific recognition of prostate-specific antigen (PSA) and early-stage diagnosis of prostate cancer using encapsulation of biotinylated antibody (Ab1) of prostate-specific antigen on D-penicillamine decorated wrinkled silicate nanoparticles (WSN). For the first time, KCC-1-NH-DPA was synthesized and used to immobilization of biomacromolecules. So, fabricated immunosensor was performed by on sandwich-type strategy. After fabrication of immunosensor, cyclic voltammetry, differe