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Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays
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Published on: October 23, 2019

Small molecule probes that target Abl kinase.

Karunakaran A Kalesh1, Derek S B Sim, Jigang Wang

  • 1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.

Chemical Communications (Cambridge, England)
|February 4, 2010
PubMed
Summary
This summary is machine-generated.

Researchers developed two methods to create probes for Abelson (Abl) tyrosine kinase. A photo-affinity probe specifically labeled Abl kinase in a complex biological sample, demonstrating its effectiveness.

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Area of Science:

  • Biochemistry
  • Chemical Biology
  • Proteomics

Background:

  • Abelson (Abl) tyrosine kinase is a key regulator in cellular processes.
  • Developing specific probes is crucial for studying kinase activity and function.
  • Activity-based probes (ABPs) offer a powerful tool for target engagement studies.

Purpose of the Study:

  • To develop novel small molecule activity-based probes (ABPs) for Abelson (Abl) tyrosine kinase.
  • To compare the efficacy of dialdehyde-based cross-linking and photo-affinity labeling strategies for ABP generation.
  • To identify a specific probe capable of labeling Abl kinase in complex biological systems.

Main Methods:

  • Synthesis of small molecule ABPs using two distinct strategies: dialdehyde-based cross-linking and photo-affinity labeling.
  • Application of the developed ABPs to crude mammalian proteome.
  • Analysis of probe specificity and target engagement using biochemical and proteomic techniques.

Main Results:

  • Two distinct ABP generation strategies were successfully implemented.
  • Probe 13, developed via the photo-affinity labeling approach, demonstrated specific labeling of Abl tyrosine kinase.
  • The probe effectively identified Abl kinase within a crude mammalian proteome.

Conclusions:

  • Photo-affinity labeling is a viable strategy for generating specific ABPs against Abl tyrosine kinase.
  • The developed probe 13 serves as a valuable chemical tool for investigating Abl kinase activity and interactions.
  • This work contributes to the advancement of chemical biology tools for kinase research.