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Updated: Sep 6, 2025

Characterize Disease-related Mutants of RAF Family Kinases by Using a Set of Practical and Feasible Methods
Published on: July 17, 2019
[Resistance to BRAF inhibitors: A lesson from clinical observations]
Cylia Dahmani1, Eulalie Corre2, Sarah Dandou3
1IBMM, université de Montpellier, CNRS, ENSCM, Montpellier, France - Groupe de la chaire de recherche du Canada en pharmacogénomique, Faculté de pharmacie de l'université Laval, Centre de recherche du CHU de Québec - université Laval (CRCHUQc-UL), Québec, QC, Canada.
Abstract:
The MAPK/ERK pathway is an essential intracellular signaling pathway. Its deregulation is involved in tumor transformation and progression. The discovery of activating mutations of BRAF in various cancers has opened new therapeutic avenues with BRAF protein kinase inhibitors. Depending on the type of cancers, these inhibitors have shown either insufficient efficacy due to primary resistance of tumor cells or transient efficacy due to the development of acquired resistance. In this review, we revisit the discoveries that led to the development of BRAF inhibitors and detail the molecular and cellular mechanisms of resistance in cancers treated with these inhibitors. Understanding these mechanisms is crucial for developing more efficient therapeutic strategies.
Insights
BRAF inhibitors target the MAPK/ERK pathway in cancer, but resistance limits their effectiveness. This review explores BRAF inhibitor development and resistance mechanisms to improve cancer therapy.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Signaling
Background:
- The MAPK/ERK pathway is crucial for cell signaling and its dysregulation contributes to cancer.
- Activating BRAF mutations are common in various cancers, leading to targeted therapy development.
- BRAF inhibitors offer therapeutic potential but face challenges with primary and acquired resistance.
Purpose of the Study:
- To review the development of BRAF inhibitors.
- To detail the molecular and cellular mechanisms of resistance to BRAF inhibitors in cancer.
- To highlight the importance of understanding resistance for future therapeutic strategies.
Main Methods:
- Literature review of BRAF inhibitor development.
- Analysis of molecular mechanisms underlying BRAF inhibitor resistance.
- Examination of cellular mechanisms of resistance in cancer.
Main Results:
- BRAF inhibitors have shown promise but exhibit variable efficacy due to resistance.
- Primary resistance limits initial treatment effectiveness.
- Acquired resistance leads to treatment failure over time.
Conclusions:
- Understanding BRAF inhibitor resistance mechanisms is critical for improving cancer treatment outcomes.
- Further research into overcoming resistance is essential for developing more effective BRAF-targeted therapies.
- This review provides insights into resistance pathways to guide future drug development.
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