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Published on: December 19, 2019
BRAFV600E: implications for carcinogenesis and molecular therapy
Emma R Cantwell-Dorris1, John J O'Leary, Orla M Sheils
1Department of Histopathology, Trinity College, Sir Patrick Dun Research Laboratory, Pathology Building, St. James' Hospital, Dublin 8, Ireland. cantweer@tcd.ie
Abstract:
The mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway is frequently mutated in human cancer. This pathway consists of a small GTP protein of the RAS family that is activated in response to extracellular signaling to recruit a member of the RAF kinase family to the cell membrane. Active RAF signals through MAP/ERK kinase to activate ERK and its downstream effectors to regulate a wide range of biological activities including cell differentiation, proliferation, senescence, and survival. Mutations in the v-raf murine sarcoma viral oncogenes homolog B1 (BRAF) isoform of the RAF kinase or KRAS isoform of the RAS protein are found as activating mutations in approximately 30% of all human cancers. The BRAF pathway has become a target of interest for molecular therapy, with promising results emerging from clinical trials. Here, the role of the most common BRAF mutation BRAF(V600E) in human carcinogenesis is investigated through a review of the literature, with specific focus on its role in melanoma, colorectal, and thyroid cancers and its potential as a therapeutic target.
Insights
The BRAF(V600E) mutation in the MAPK/ERK pathway drives cancer by promoting cell growth. This common mutation in cancers like melanoma is a promising target for new molecular therapies.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Genetics
Background:
- The mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathway regulates cell functions.
- Activating mutations in BRAF or KRAS are present in approximately 30% of human cancers.
- The BRAF pathway is a key target for molecular cancer therapy.
Purpose of the Study:
- To investigate the role of the BRAF(V600E) mutation in human carcinogenesis.
- To review the literature on BRAF(V600E) in melanoma, colorectal, and thyroid cancers.
- To assess the therapeutic potential of targeting BRAF mutations.
Main Methods:
- Literature review of scientific articles.
- Analysis of BRAF(V600E) mutation prevalence and function.
- Evaluation of clinical trial data for BRAF-targeted therapies.
Main Results:
- The BRAF(V600E) mutation is a significant driver in various human cancers.
- Specific focus on its role in melanoma, colorectal, and thyroid cancer development.
- Emerging clinical trial data show promising results for BRAF-targeted therapies.
Conclusions:
- The BRAF(V600E) mutation plays a critical role in cancer development.
- Targeting the BRAF pathway offers a viable therapeutic strategy.
- Further research and clinical trials are warranted to optimize BRAF-targeted treatments.
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