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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
Non-receptor protein tyrosine kinases signaling pathways in normal and cancer cells
Elzbieta Gocek1, Anargyros N Moulas, George P Studzinski
1Department of Protein Biotechnology, Faculty of Biotechnology, University of Wroclaw , Wroclaw , Poland .
Abstract:
Protein tyrosine kinases (PTKs) are enzymes that transfer phosphate groups to tyrosine residues on protein substrates. Phosphorylation of proteins causes changes in their function and/or enzymatic activity resulting in specific biological responses. There are two classes of PTKs: the transmembrane receptor PTKs and the cytoplasmic non-receptor PTKs (NRTKs). NRTKs are involved in transduction of signals originating from extracellular clues, which often interact with transmembrane receptors. Thus, they are important components of signaling pathways which regulate fundamental cellular functions such as cell differentiation, apoptosis, survival, and proliferation. The activity of NRTKs is tightly regulated, and de-regulation and/or overexpression of NRTKs has been implicated in malignant transformation and carcinogenesis. Research on NRTKs has shed light on the mechanisms of a number of cellular processes including those involved in carcinogenesis. Not surprisingly, several tyrosine kinase inhibitors are in use as treatment for a number of malignancies, and more are under investigation. This review deals with the structure, function, and signaling pathways of nine main families of NRTKs in normal and cancer cells.
Insights
Cytoplasmic non-receptor tyrosine kinases (NRTKs) are crucial for cell signaling and function. Dysregulation of NRTKs is linked to cancer, driving research into targeted therapies.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Oncology
Background:
- Protein tyrosine kinases (PTKs) are enzymes regulating cellular functions through tyrosine residue phosphorylation.
- Cytoplasmic non-receptor tyrosine kinases (NRTKs) mediate signals from extracellular stimuli, impacting cell differentiation, apoptosis, survival, and proliferation.
- NRTK dysregulation is implicated in malignant transformation and carcinogenesis.
Purpose of the Study:
- To review the structure, function, and signaling pathways of nine major NRTK families.
- To elucidate the role of NRTKs in both normal and cancerous cellular processes.
- To highlight the therapeutic potential of targeting NRTKs in cancer treatment.
Main Methods:
- Literature review and synthesis of existing research on NRTKs.
- Analysis of NRTK structure, function, and signaling mechanisms.
- Examination of NRTK involvement in carcinogenesis and therapeutic strategies.
Main Results:
- NRTKs play a critical role in fundamental cellular processes.
- Aberrant NRTK activity is a hallmark of many cancers.
- Several NRTK inhibitors are approved or under investigation for cancer therapy.
Conclusions:
- NRTKs are vital regulators of cellular signaling with significant implications in cancer.
- Understanding NRTK pathways is essential for developing novel anti-cancer treatments.
- Targeting NRTKs offers a promising therapeutic avenue for various malignancies.
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