Skip to main content
padlock icon - secure page this page is secure

One-Step Assay for Optical Prostate Specific Antigen Detection Using Magnetically Engineered Responsive Thin Film

Buy Article:

$106.65 + tax (Refund Policy)

We report a novel and very simple method for the detection of proteolytically-active prostate specific antigen (PSA) at a very low concentration using a self-assembled monolayer (SAM) of magnetic beads conjugated with peptide. The application of surface plasmon resonance (SPR) allows real-time optical characterization of the constructed recognition monolayer. This set-up is also capable of rapid monitoring of PSA samples through an instantaneous detection of medium refractive index shift induced by the enzymatic cleavage of the peptide and the dissociation of free magnetic beads. The results showed the ability of our SPR sensor to detect PSA within a short time (few minutes to 30 min) with high sensitivity (100 pg/ml) and specificity. Thanks to the elimination of washing and blocking steps, as well as the signal amplification and labeling procedures, this approach can be implemented in other miniaturized configurations such as screen printed electrode and biochip array amenable to low-cost point-of-care devices.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics


Document Type: Research Article

Publication date: June 1, 2014

More about this publication?
  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more