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Improved Piezoimmunosensor

An apparatus comprising one or more piezoelectric mass sensors for use in diagnostic and analytic processes, in particular for immunochemical detection of diagnostically relevant analytes in real time. Each piezoelectric mass sensor comprises a piezoelectric crystal with a receptor surface which has immobilized thereon a lawn of recombinant antibodies comprising single V.sub.H chain or single-chain Fv (scFv) polypeptides specific for a particular antigen. Binding of antigen to the recombinant antibodies results in a change in mass on the receptor surface which is detected as a change in resonant frequency. In a preferred embodiment, the receptor layer is a precious metal such as gold which facilitates self-assembly of the recombinant antibodies into a lawn on the receptor surface via a cysteine residue at the carboxy terminus of the attachment polypeptide.


Licensing Contact

Mike Villalobos

615.322.6751
Diagnostics

Filament Based Point-of-Care Platform

Vanderbilt engineers have developed a robust platform for point-of-care (POC) diagnostics applicable to infectious diseases, biowarfare agents and environmental and agricultural testing. This technology uses capture antibodies on a polyester filament, or DNA, on a gold wire that act as molecular hooks to troll for viral or bacterial protein antigens, RNA or capture DNA present in a small biological sample solution. It is envisioned that once the analytical POC device is purchased, a different single-use filament would be sold for each pathogen test of interest.


Licensing Contact

Karen Rufus

615.322.4295
Diagnostics