"Spot and hop": internal referencing for surface plasmon resonance imaging using a three-dimensional microfluidic flow cell array

Anal Biochem. 2009 Feb 15;385(2):309-13. doi: 10.1016/j.ab.2008.11.014. Epub 2008 Nov 20.

Abstract

We have developed a novel referencing technique for surface plasmon resonance imaging systems referred to as "spot and hop." The technique enables internal referencing for individual flow cells in a parallel processing microfluidic network. Internal referencing provides the ability to correct for nonspecific binding and instrument drift, significantly improving data quality at each region of interest. The performance of a 48-flow-cell device was demonstrated through a series of studies, including "rise and fall" time, ligand preconcentration, ligand immobilization, analyte binding, and regeneration tests. Interfacing parallel processing fluidics with imaging systems will significantly expand the throughput and applications of array-based optical biosensors while retaining high data quality.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Biosensing Techniques / methods
  • Ligands
  • Microfluidic Analytical Techniques*
  • Reference Standards
  • Surface Plasmon Resonance / standards*

Substances

  • Ligands