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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
Protein tyrosine kinase signaling diversity and susceptibility to targeted kinase inhibitors
1Segal comprehensive cancer center, McGill university, Montreal, Canada. moulay.alaoui-jamali@mcgill.ca
Abstract:
Protein kinases, including tyrosine kinases, are one of the largest classes of proteins implicated in cancer development and progression. Recent discovery of selective therapies targeting tyrosine kinase receptor signaling has provided encouraging clinical results. Clinical trials with anti-EGFR, anti-ErbB2/Her2, anti-Bcr-Abl and others have demonstrated the clinical utility of tyrosine kinases as therapeutic targets and as surrogate markers to guide the selection of patients susceptible to respond to treatment. This success has been tempered in part because resistance to targeted therapies is now documented to occur in experimental models and in patients, which hampers therapeutic efficacy. Mechanisms of resistance include cell heterogeneity in target expression, mutations in target's encoding genes, and compensatory signaling mechanisms. This paper provides a brief overview on the diversity of tyrosine kinase signaling and the impact on cancer cell response to targeted tyrosine kinase inhibitors.
Insights
Tyrosine kinases are key in cancer, and targeted therapies show promise. However, drug resistance mechanisms, like mutations and signaling changes, limit treatment effectiveness.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Protein kinases, particularly tyrosine kinases, are crucial in cancer development.
- Targeted therapies inhibiting tyrosine kinase signaling have shown clinical success.
- Resistance to these targeted therapies is a significant clinical challenge.
Purpose of the Study:
- To provide an overview of tyrosine kinase signaling diversity.
- To discuss the impact of tyrosine kinase signaling on cancer cell response to targeted inhibitors.
- To highlight mechanisms of resistance to tyrosine kinase inhibitors.
Main Methods:
- Literature review of tyrosine kinase signaling pathways.
- Analysis of clinical trial data for targeted tyrosine kinase inhibitors.
- Review of experimental models investigating resistance mechanisms.
Main Results:
- Tyrosine kinases play a central role in various cancers.
- Targeted therapies have demonstrated significant clinical utility.
- Mechanisms of resistance, including target heterogeneity, mutations, and compensatory signaling, reduce therapeutic efficacy.
Conclusions:
- Tyrosine kinases are vital therapeutic targets in oncology.
- Understanding resistance mechanisms is crucial for improving targeted therapy efficacy.
- Further research into tyrosine kinase signaling and resistance is needed for better cancer treatment.
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