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Simple absorbance-based assays for ultra-high throughput screening.

P Lavery1, M J Brown, A J Pope

  • 1Molecular Interactions and New Assay Technologies, SmithKline Beecham Pharmaceuticals, New Frontiers Science Park, Essex, UK.

Journal of Biomolecular Screening
|October 27, 2001
PubMed
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Miniaturized absorbance assays in 1536-well plates enable ultra-high throughput screening (uHTS). This cost-effective approach is predictable and effective for enzyme inhibition studies, offering improved assay quality.

Area of Science:

  • Biochemistry
  • Assay Development
  • Drug Discovery

Background:

  • Pharmaceutical companies face increasing screening demands.
  • Miniaturized, high-speed high-throughput screening (HTS) formats are essential.
  • Enzyme systems with small substrates may not suit fluorescence techniques.

Purpose of the Study:

  • To miniaturize simple absorbance-based assays for ultra-high throughput screening (uHTS).
  • To demonstrate the effectiveness of absorbance assays in 1536-well microplates.
  • To validate assay performance and inhibitor parameter determination in a miniaturized format.

Main Methods:

  • Miniaturization of absorbance assays to 10-microliter volumes in 1536-well microplates.
  • Utilizing low-cost hardware for assay implementation.

Related Experiment Videos

  • Predicting assay performance based on pathlength changes.
  • Conducting enzyme inhibition studies and kinetics measurements.

    • Main Results:

    • Successful miniaturization of absorbance assays to 10-microl volumes in 1536-well plates.
    • Assay performance was predictable and comparable to standard formats.
    • Enzyme systems functioned effectively in the high-density format.
    • Kinetics measurements in miniaturized format improved assay quality and mechanistic insights.

    Conclusions:

    • Simple absorbance assays are suitable for miniaturization to 1536-well formats for uHTS.
    • This approach is cost-effective and provides reliable results for enzyme inhibition.
    • Miniaturized kinetics measurements enhance assay quality and provide detailed inhibitor information.