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VIBRANT: spectral profiling for single-cell drug responses.

Xinwen Liu1, Lixue Shi1,2, Zhilun Zhao1

  • 1Department of Chemistry, Columbia University, New York, NY, USA.

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|February 19, 2024
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Summary

A new method called vibrational painting (VIBRANT) enables high-content cell profiling for drug discovery. This technique accurately predicts drug mechanisms and identifies new drug candidates by analyzing single-cell responses.

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Area of Science:

  • Chemical Biology
  • Biophysics
  • Computational Biology

Background:

  • High-content cell profiling is crucial for understanding cellular responses to chemical compounds.
  • Existing methods often lack the throughput, information richness, or affordability needed for comprehensive drug screening.
  • There is a continuous need for advanced techniques to analyze single-cell drug responses efficiently.

Purpose of the Study:

  • To introduce vibrational painting (VIBRANT), a novel high-content spectral profiling method for single-cell drug response analysis.
  • To demonstrate VIBRANT's capability in measuring metabolic activities and phenotypic changes in human cancer cells.
  • To develop computational tools for predicting drug mechanisms and discovering novel therapeutic agents.

Main Methods:

  • Integration of mid-infrared vibrational imaging with multiplexed vibrational probes.
  • Design of infrared-active probes targeting essential metabolic activities.
  • Development of an optimized data analysis pipeline for processing over 20,000 single-cell drug responses.
  • Application of machine learning for predicting drug mechanism of action and evaluating drug combinations.

Main Results:

  • VIBRANT provides a highly sensitive spectral profile of single-cell phenotypic changes under drug perturbation.
  • A machine learning classifier accurately predicted drug mechanisms of action at the single-cell level, minimizing batch effects.
  • An algorithm was developed to discover potential drug candidates with novel mechanisms and to assess drug combinations.

Conclusions:

  • VIBRANT offers a powerful and versatile platform for phenotypic screening and drug discovery.
  • The method significantly enhances the ability to analyze single-cell drug responses and understand drug mechanisms.
  • VIBRANT shows great potential for accelerating the identification of effective therapeutics and combination strategies.