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Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays
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HTRF Kinase Assay Development and Methods in Inhibitor Characterization.

Yong Jia1, Mari Manuia2, Jose Juarez2

  • 1Genomics Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, CA, 92121, USA. yjia@gnf.org.

Methods in Molecular Biology (Clifton, N.J.)
|October 27, 2015
PubMed
Summary

This study details developing a homogeneous time-resolved fluorescence (HTRF) assay for kinases, crucial in cell signaling and disease. The method enables kinetic parameter determination and inhibitor mechanism of action studies for drug discovery.

Keywords:
Assay developmentHTRFInhibitor characterizationKinaseMoA studiesTR-FRET

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pharmacology

Background:

  • Kinases are vital in cellular signaling and implicated in various diseases.
  • Developing effective kinase inhibitors is a key focus in drug discovery.
  • Homogeneous time-resolved fluorescence (HTRF) is a powerful assay technology for kinase research.

Purpose of the Study:

  • To describe the development of an HTRF kinase assay.
  • To demonstrate kinetic parameter determination (ATP K m) for mutant EGFR.
  • To illustrate inhibitor mechanism of action (MoA) studies for different inhibitor types.

Main Methods:

  • Utilized homogeneous time-resolved fluorescence (HTRF) technology.
  • Developed a specific HTRF assay using mutant epidermal growth factor receptor (EGFR) enzyme.
  • Applied the assay to determine enzyme kinetics and study inhibitor MoA.

Main Results:

  • Successfully developed and validated an HTRF assay for kinase activity.
  • Determined the ATP K m kinetic parameter for the mutant EGFR enzyme.
  • Differentiated the mechanism of action for various kinase inhibitors.

Conclusions:

  • The described HTRF assay development protocol is effective for kinase research.
  • This methodology can be adapted for other kinases, facilitating drug screening and profiling.
  • HTRF assays provide valuable insights into kinase function and inhibitor interactions.