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Updated: May 29, 2026

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
Published on: June 7, 2019
The role of mitogen- and stress-activated protein kinase pathways in melanoma
1Instituto de Medicina y Biología Experimental, CONICET, Buenos Aires, Argentina. pablobergami@gmail.com
Abstract:
Recent discoveries have increased our comprehension of the molecular signaling events critical for melanoma development and progression. Many oncogenes driving melanoma have been identified, and most of them exert their oncogenic effects through the activation of the RAF/MEK/ERK mitogen-activated protein kinase (MAPK) pathway. The c-Jun N-terminal kinase (JNK) and p38 MAPK pathways are also important in melanoma, but their precise role is not clear yet. This review summarizes our current knowledge on the role of the three main MAPK pathways, extracellular regulated kinase (ERK), JNK, and p38, and their impact on melanoma biology. Although the results obtained with BRAF inhibitors in melanoma patients are impressive, several mechanisms of acquired resistance have emerged. To overcome this obstacle constitutes the new challenge in melanoma therapy. Given the major role that MAPKs play in melanoma, understanding their functions and the interconnection among them and with other signaling pathways represents a step forward toward this goal.
Insights
This review details the critical roles of mitogen-activated protein kinase (MAPK) pathways in melanoma development and resistance. Understanding these pathways is key to overcoming therapeutic challenges in melanoma treatment.
Area of Science:
- Oncology
- Molecular Biology
- Dermatology
Background:
- Melanoma development and progression are driven by molecular signaling events.
- Key oncogenes activate the RAF/MEK/ERK mitogen-activated protein kinase (MAPK) pathway.
- The roles of c-Jun N-terminal kinase (JNK) and p38 MAPK pathways in melanoma require further clarification.
Purpose of the Study:
- To review the current understanding of the three main MAPK pathways (ERK, JNK, and p38) in melanoma biology.
- To explore the impact of these pathways on melanoma development and progression.
- To discuss the implications for melanoma therapy and resistance mechanisms.
Main Methods:
- Literature review of recent discoveries in melanoma molecular signaling.
- Analysis of the roles of ERK, JNK, and p38 MAPK pathways.
- Examination of BRAF inhibitors and acquired resistance mechanisms.
Main Results:
- Mitogen-activated protein kinase (MAPK) pathways, particularly ERK, are crucial in melanoma.
- While BRAF inhibitors show promise, acquired resistance is a significant challenge.
- Interconnections between MAPK pathways and other signaling networks are vital for melanoma progression.
Conclusions:
- A comprehensive understanding of MAPK pathway functions and their interconnections is essential for advancing melanoma therapy.
- Targeting MAPK pathways and overcoming resistance mechanisms are critical future directions.
- Further research into the precise roles of JNK and p38 pathways may reveal new therapeutic strategies.
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