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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
ErbB receptors: from oncogenes to targeted cancer therapies
Hongtao Zhang1, Alan Berezov, Qiang Wang
1Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6082, USA.
Abstract:
Understanding the genetic origin of cancer at the molecular level has facilitated the development of novel targeted therapies. Aberrant activation of the ErbB family of receptors is implicated in many human cancers and is already the target of several anticancer therapeutics. The use of mAbs specific for the extracellular domain of ErbB receptors was the first implementation of rational targeted therapy. The cytoplasmic tyrosine kinase domain is also a preferred target for small compounds that inhibit the kinase activity of these receptors. However, current therapy has not yet been optimized, allowing for opportunities for optimization of the next generation of targeted therapy, particularly with regards to inhibiting heteromeric ErbB family receptor complexes.
Insights
Targeted cancer therapies are improving, especially for ErbB receptor-driven cancers. Future treatments will focus on optimizing therapies to inhibit ErbB receptor complexes for better outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Aberrant activation of the ErbB receptor family is a key driver in numerous human cancers.
- Targeted therapies, including monoclonal antibodies (mAbs) and small molecule inhibitors, are already used against ErbB receptors.
- Current ErbB-targeted therapies have limitations, presenting opportunities for next-generation treatments.
Purpose of the Study:
- To review the current landscape of ErbB-targeted therapies.
- To highlight the potential for optimizing next-generation therapies by targeting ErbB receptor complexes.
Main Methods:
- Review of existing literature on ErbB receptor signaling and targeted therapies.
- Analysis of current therapeutic strategies and their limitations.
- Discussion of future directions in ErbB-targeted drug development.
Main Results:
- Monoclonal antibodies targeting the extracellular domain and small molecule inhibitors targeting the intracellular tyrosine kinase domain are established ErbB-targeted therapies.
- ErbB receptor family members form heteromeric complexes that contribute to cancer progression.
- Current therapies do not fully address the complexity of ErbB receptor heteromerization.
Conclusions:
- Next-generation targeted therapies should focus on inhibiting ErbB receptor heteromeric complexes.
- Optimizing therapies to block ErbB receptor interactions holds promise for improved cancer treatment outcomes.
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