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Characterize Disease-related Mutants of RAF Family Kinases by Using a Set of Practical and Feasible Methods
Published on: July 17, 2019
A structural perspective on targeting the RTK/Ras/MAP kinase pathway in cancer
David E Heppner1,2, Michael J Eck3,4
1Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York, USA.
Abstract:
Precision oncology is premised on identifying and drugging proteins and pathways that drive tumorigenesis or are required for survival of tumor cells. Across diverse cancer types, the signaling pathway emanating from receptor tyrosine kinases on the cell surface to RAS and the MAP kinase pathway is the most frequent target of oncogenic mutations, and key proteins in this signaling axis including EGFR, SHP2, RAS, BRAF, and MEK have long been a focus in cancer drug discovery. In this review, we provide an overview of historical and recent efforts to develop inhibitors targeting these nodes with an emphasis on the role that an understanding of protein structure and regulation has played in inhibitor discovery and characterization. Beyond its well-established role in structure-based drug design, structural biology has revealed mechanisms of allosteric regulation, distinct effects of activating oncogenic mutations, and other vulnerabilities that have opened new avenues in precision cancer drug discovery.
Insights
Precision oncology targets cancer-driving proteins. Structural biology advances inhibitor discovery for key signaling pathways like EGFR and RAS, opening new avenues for targeted cancer therapies.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Precision oncology aims to inhibit proteins driving cancer growth.
- The receptor tyrosine kinase-RAS-MAPK pathway is frequently mutated in cancers.
- Key proteins like EGFR, SHP2, RAS, BRAF, and MEK are critical targets.
Purpose of the Study:
- To review historical and recent efforts in developing inhibitors for cancer signaling pathways.
- To emphasize the role of structural biology in inhibitor discovery and characterization.
- To explore how structural insights reveal new vulnerabilities for drug development.
Main Methods:
- Review of literature on targeted cancer therapies.
- Analysis of structure-based drug design approaches.
- Examination of structural biology findings on protein regulation and mutations.
Main Results:
- Significant progress has been made in developing inhibitors for the RAS-MAPK pathway.
- Structural biology has been crucial for understanding inhibitor mechanisms and optimizing drug design.
- New therapeutic strategies are emerging based on allosteric regulation and oncogenic mutation effects.
Conclusions:
- Understanding protein structure and regulation is vital for advancing precision oncology.
- Structural biology provides critical insights for discovering and characterizing novel cancer drugs.
- Targeting key signaling nodes offers promising avenues for effective cancer treatment.
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