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Related Experiment Videos

Array biosensor for detection of toxins.

Frances S Ligler1, Chris Rowe Taitt, Lisa C Shriver-Lake

  • 1Center for Bio/Molecular Science and Engineering, Code 6900, Naval Research Laboratory, Washington, DC 20375-5348, USA. fligler@cbmse.nrl.navy.mil

Analytical and Bioanalytical Chemistry
|June 18, 2003
PubMed
Summary
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This study introduces an array biosensor for rapid, simultaneous detection of multiple toxins in various samples. The novel fluoroimmunoassay platform enables sensitive toxin identification and quantification with minimal sample preparation.

Area of Science:

  • Analytical Chemistry
  • Biotechnology
  • Immunosensor Technology

Background:

  • Current methods for toxin detection can be time-consuming and require extensive sample preparation.
  • Simultaneous detection of multiple analytes is crucial for comprehensive sample analysis.
  • Array biosensors offer a platform for multiplexed detection.

Purpose of the Study:

  • To develop and validate an array biosensor for rapid, simultaneous detection of multiple toxins.
  • To assess the performance of sandwich and competitive fluoroimmunoassays for high and low molecular weight toxins.
  • To demonstrate the application of the biosensor in complex sample matrices.

Main Methods:

  • Immobilization of recognition molecules (antibodies) onto a waveguide surface to create a patterned array.
Keywords:
NASA Discipline Life Sciences TechnologiesNASA Program Advanced Human Support Technology

Related Experiment Videos

  • Development of sandwich and competitive fluoroimmunoassays for toxin detection.
  • Detection of fluorescent signals using a CCD camera and automated image analysis for quantification.

    • Main Results:

    • The array biosensor successfully detected multiple toxins simultaneously in clinical fluids, environmental samples, and food.
    • Toxins such as staphylococcal enterotoxin B, ricin, cholera toxin, botulinum toxoids, trinitrotoluene, and fumonisin were identified.
    • Detection limits as low as 0.5 ng mL(-1) were achieved with minimal sample preparation.

    Conclusions:

    • The developed array biosensor provides a rapid and sensitive platform for multiplexed toxin detection.
    • The fluoroimmunoassay approach is effective for analyzing both high and low molecular weight toxins in complex matrices.
    • This technology has significant potential for applications in food safety, environmental monitoring, and clinical diagnostics.