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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
The protein kinase ABC's of signal transduction as targets for drug development
1Department of Pharmacology, Georgetown University Medical Center, Washington, DC 20007, USA. glazerr@gunet.georgetown.edu
Abstract:
Signal transduction plays a key regulatory role in the growth and metastatic potential of tumor cells. These signaling pathways form an interconnecting grid that serves to regulate the homeostatic, survival and invasive functions of the cell. Among the key regulatory molecules in these pathways are the serine/threonine-protein kinases A, B, and C, also known respectively as cyclic AMP-dependent protein kinase (PKA), Akt (PKB) and protein kinase C (PKC). These protein kinases modulate pathways associated with tumor proliferation, cell survival and multidrug resistance, and at a molecule level are likely to serve as effective targets for drug design. The unique structural features of each protein kinase have been deduced from their crystallographic structures and form unique opportunities for structure-based drug design. In addition, these protein kinases are potentially important targets for antisense oligonucleotide therapy, and therefore may provide a means of selectively inhibiting tumor proliferation and inducing apoptosis with minimal nonspecific cytotoxicity.
Insights
Signal transduction pathways regulate tumor growth and metastasis. Key serine/threonine-protein kinases like PKA, Akt, and PKC are crucial targets for novel cancer therapies, including structure-based drug design and antisense oligonucleotide therapy.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Signal transduction pathways are critical for regulating tumor cell growth, survival, and metastasis.
- Serine/threonine-protein kinases, including cyclic AMP-dependent protein kinase (PKA), Akt (PKB), and protein kinase C (PKC), are key regulators within these pathways.
- Dysregulation of these kinases contributes to tumor proliferation, cell survival, and multidrug resistance.
Purpose of the Study:
- To highlight the role of serine/threonine-protein kinases in cancer.
- To explore the potential of these kinases as therapeutic targets for cancer treatment.
- To discuss structure-based drug design and antisense oligonucleotide therapy approaches.
Main Methods:
- Analysis of signal transduction pathways involved in cancer.
- Review of crystallographic structures of key protein kinases.
- Exploration of therapeutic strategies targeting protein kinases.
Main Results:
- Protein kinases PKA, Akt, and PKC modulate critical cancer-related pathways.
- Unique structural features of these kinases offer opportunities for targeted drug design.
- Antisense oligonucleotide therapy targeting these kinases shows potential for selective cancer cell inhibition.
Conclusions:
- Serine/threonine-protein kinases are vital targets for cancer drug development.
- Structure-based drug design and antisense oligonucleotide therapy present promising strategies.
- Targeting these kinases may lead to selective tumor growth inhibition and apoptosis induction with reduced side effects.
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