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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
Receptor tyrosine kinases and anticancer therapy
Michael Medinger1, Joachim Drevs
1Tumor Biology Center, Breisacherstr. 117, 79106 Freiburg, Germany. medinger@tumorbio.uni-freiburg.de
Abstract:
Receptor and non-receptor protein tyrosine kinases (PTKs) are essential enzymes in cellular signaling processes and signal transduction pathways that regulate cell growth, differentiation, migration and metabolism by catalyzing protein phosphorylation and dephosphorylation. In recent years, different tyrosine kinase receptors were identified as regulators of tumor or tumor vessel growth. Their inhibition by specific tyrosine kinase inhibitors and antibodies targeting growth factors and their receptors were recently shown to constitute a new modality for treating cancers. The pathognomonic role of the inhibited tyrosine kinase defines the way of action, whereas the amount of expression in tumor tissue is thought to define the indication for the tumor entity. Various compounds targeting PTKs are under clinical investigation in phase I-III trials or are already approved. This review describes new drugs targeting BCR-Abl, c-kit, EGFR (epidermal growth factor receptor), tumor angiogenesis via VEGF (vascular endothelial growth factor), HER2/neu and "multitarget" tyrosine kinase inhibitors.
Insights
Protein tyrosine kinases (PTKs) are key in cell signaling and cancer growth. New tyrosine kinase inhibitors offer novel cancer treatment strategies by targeting specific tumor-related kinases.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Protein tyrosine kinases (PTKs) are crucial enzymes regulating cellular signaling pathways.
- Dysregulation of PTKs is implicated in various cancers, driving tumor and tumor vessel growth.
- Targeting PTKs has emerged as a significant strategy in cancer therapy.
Purpose of the Study:
- To review novel drugs targeting protein tyrosine kinases for cancer treatment.
- To highlight the role of specific tyrosine kinase inhibitors and antibodies in oncology.
- To discuss the clinical investigation and approval status of various PTK-targeting agents.
Main Methods:
- Literature review of preclinical and clinical studies on tyrosine kinase inhibitors.
- Analysis of drug development targeting specific kinases like BCR-Abl, c-kit, EGFR, and HER2/neu.
- Examination of agents targeting tumor angiogenesis via VEGF and multi-target inhibitors.
Main Results:
- Several tyrosine kinase inhibitors and antibodies are approved or in clinical trials for cancer treatment.
- The efficacy of these drugs is linked to the specific tyrosine kinase targeted and its expression level in tumors.
- Targeted therapies demonstrate a new modality for treating various cancer types.
Conclusions:
- Targeting protein tyrosine kinases represents a promising approach in modern cancer therapy.
- The development of specific and multi-target tyrosine kinase inhibitors continues to advance cancer treatment options.
- Expression profiling of kinases in tumors is essential for guiding therapeutic indications.
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