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The Raf signal transduction cascade as a target for chemotherapeutic intervention in growth factor-responsive tumors
C R Weinstein-Oppenheimer1, W L Blalock, L S Steelman
1Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Brody Building of Medical Sciences 5N98C, Greenville, NC 27858, USA.
Abstract:
This review focuses on the Ras-Raf-mitogen-activated protein kinase kinase (MEK)-extracellular signal-regulated kinase (ERK) signal transduction pathway and the consequences of its unregulation in the development of cancer. The roles of some of the cell membrane receptors involved in the activation of this pathway, the G-protein Ras, the Raf, MEK and ERK kinases, the phosphatases that regulate these kinases, as well as the downstream transcription factors that become activated, are discussed. The roles of the Ras-Raf-MEK-ERK pathway in the regulation of apoptosis and cell cycle progression are also analyzed. In addition, potential targets for pharmacological intervention in growth factor-responsive cells are evaluated.
Insights
The Ras-Raf-MEK-ERK pathway is crucial in cancer development. Understanding its components and regulation offers potential targets for cancer drug development.
Area of Science:
- Cellular signaling pathways
- Cancer biology
- Molecular oncology
Background:
- The Ras-Raf-mitogen-activated protein kinase kinase (MEK)-extracellular signal-regulated kinase (ERK) pathway is a key regulator of cell growth and survival.
- Dysregulation of this pathway is implicated in various human cancers.
- Components include cell membrane receptors, G-protein Ras, Raf, MEK, ERK kinases, and regulatory phosphatases.
Purpose of the Study:
- To review the Ras-Raf-MEK-ERK signaling pathway.
- To discuss its role in cancer development.
- To evaluate potential pharmacological intervention targets.
Main Methods:
- Literature review of signaling pathway components.
- Analysis of pathway regulation in cancer.
- Evaluation of therapeutic targets.
Main Results:
- The pathway's components and their interactions are detailed.
- The pathway's role in regulating apoptosis and cell cycle progression is analyzed.
- Potential drug targets within the pathway are identified.
Conclusions:
- The Ras-Raf-MEK-ERK pathway is a critical factor in cancer.
- Targeting this pathway holds promise for cancer therapy.
- Further research into pharmacological interventions is warranted.