Small molecule inhibitors of protein kinases in cancer- how to overcome resistance

R Griffith1, M N Brown, A McCluskey

  • 1School of Environmental and Life Sciences, Faculty of Science and IT, University of Newcastle, Callaghan NSW 2308, Australia. renate.griffith@newcastle.edu.au

Insights

Small molecule kinase inhibitors are promising cancer drugs, but resistance is a challenge. Targeting active kinase conformations offers a potential solution to overcome drug resistance in cancer therapy.

Area of Science:

  • Oncology
  • Pharmacology

Background:

  • Small molecule kinase inhibitors are vital anti-cancer therapeutics.
  • De novo and acquired resistance limit the efficacy of these drugs.
  • Receptor tyrosine kinases like KIT are key targets in cancer treatment.

Purpose of the Study:

  • To review the challenges of resistance to small molecule kinase inhibitors.
  • To illustrate resistance mechanisms using the KIT receptor tyrosine kinase as a model.
  • To present emerging strategies for overcoming drug resistance.

Main Methods:

  • Literature review of resistance mechanisms in kinase inhibitor therapy.
  • Case study analysis focusing on the KIT receptor tyrosine kinase.
  • Exploration of novel therapeutic approaches targeting kinase conformations.

Main Results:

  • Resistance to kinase inhibitors can be de novo or acquired.
  • Specific resistance mutations in KIT can be identified.
  • Targeting active kinase conformations shows potential to circumvent resistance.

Conclusions:

  • Drug resistance remains a significant hurdle in kinase inhibitor therapy.
  • Understanding resistance mechanisms is crucial for developing effective treatments.
  • Novel strategies like targeting active kinase conformations offer hope for improved cancer therapy.

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