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Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
Published on: September 19, 2018
Resistance to tyrosine kinase inhibitors: calling on extra forces
Jan Cools1, Chantal Maertens, Peter Marynen
1Department of Human Genetics, University of Leuven, Flanders Interuniversity Institute for Biotechnology (VIB), B-3000 Leuven, Belgium. jan.cools@med.kuleuven.ac.be
Abstract:
Over the past 5 years, small molecule tyrosine kinase inhibitors have been successfully introduced as new cancer therapeutics. The pioneering work with the ABL inhibitor imatinib (Glivec, Gleevec) was rapidly extended to other types of leukemias as well as solid tumors, which stimulated the development of a variety of new tyrosine kinase inhibitors. Unfortunately, oncogenic tyrosine kinases seem to have little problem to develop resistance to these inhibitors, and there is good evidence that this is not limited to imatinib, but also occurs with other inhibitors, such as FLT3 and EGFR inhibitors. Based on studies with imatinib, mutation and amplification of the target kinase seem to be the most important mechanisms for the development of resistance, but these mechanisms alone cannot explain all cases of resistance. A better understanding of the resistance mechanisms will be required to design improved treatment strategies in the future. In this review, we summarize the current insights in the different mechanisms of resistance to small molecule tyrosine kinase inhibitors, and discuss future improvements that might limit or even overcome resistance.
Insights
Small molecule tyrosine kinase inhibitors are effective cancer drugs, but resistance develops quickly. Understanding these resistance mechanisms is key to developing better cancer treatments.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Small molecule tyrosine kinase inhibitors (TKIs) have emerged as significant cancer therapeutics.
- The success of imatinib (Gleevec) spurred the development of numerous TKIs for various cancers.
- Resistance to TKIs is a growing challenge, impacting treatment efficacy.
Purpose of the Study:
- To review current knowledge on resistance mechanisms to small molecule TKIs.
- To discuss strategies for overcoming or limiting TKI resistance in cancer therapy.
Main Methods:
- Literature review of studies on TKI resistance.
- Analysis of documented resistance mechanisms in various cancer types.
- Synthesis of findings to identify patterns and future research directions.
Main Results:
- Resistance to TKIs like imatinib, FLT3, and EGFR inhibitors is common.
- Mechanisms include target kinase mutation and amplification, but other factors contribute.
- Resistance can limit the long-term effectiveness of these targeted therapies.
Conclusions:
- A comprehensive understanding of TKI resistance mechanisms is crucial.
- Future cancer treatment strategies must address and overcome resistance.
- Further research is needed to develop more durable and effective TKI therapies.
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