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The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
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A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
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Label-free in vitro potency assays utilize mass spectrometry (MS) for drug discovery. A new BLAZE-mode for electrospray ionization (ESI)-MS significantly speeds up analysis, enabling high-throughput screening of compound libraries.

Keywords:
RapidFirehigh-throughput mass spectrometrylabel- freetrimethylamine

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Area of Science:

  • Drug Discovery and Development
  • Analytical Chemistry
  • Biotechnology

Background:

  • Label-free in vitro potency assays offer physiological relevance and improved readout quality in drug discovery.
  • Mass spectrometry (MS) is a key technology for direct monitoring of biological processes in these assays.
  • Traditional MS methods, particularly electrospray ionization (ESI)-based systems, faced throughput limitations compared to other assay technologies.

Purpose of the Study:

  • To enhance the speed of electrospray ionization (ESI)-based mass spectrometry for label-free in vitro potency assays.
  • To enable high-throughput screening capabilities for large compound libraries using ESI-MS.
  • To present a technological advancement overcoming previous throughput bottlenecks in MS-based drug discovery assays.

Main Methods:

  • Development and implementation of a novel BLAZE-mode for RapidFire autosamplers.
  • Utilizing ESI-MS instrumentation for label-free assay analysis.
  • Achieving rapid sample cycle times of 2.5 seconds per sample.

Main Results:

  • The newly developed BLAZE-mode significantly increased the analysis speed of ESI-MS.
  • Achieved cycle times of 2.5 seconds per sample, surpassing previous limitations.
  • Established a viable high-throughput screening alternative for label-free assays using ESI-MS.

Conclusions:

  • The BLAZE-mode represents a significant technological advancement for ESI-MS in drug discovery.
  • This innovation enables high-throughput analysis of label-free potency assays.
  • Provides a competitive alternative to existing high-throughput screening technologies.