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ERK/MAPK signalling pathway and tumorigenesis
Yan-Jun Guo1, Wei-Wei Pan1, Sheng-Bing Liu1
1Department of Human Anatomy and Embryology, College of Medicine, Jiaxing University, Jiaxing, Zhejiang 314000, P.R. China.
Abstract:
Mitogen-activated protein kinase (MAPK) cascades are key signalling pathways that regulate a wide variety of cellular processes, including proliferation, differentiation, apoptosis and stress responses. The MAPK pathway includes three main kinases, MAPK kinase kinase, MAPK kinase and MAPK, which activate and phosphorylate downstream proteins. The extracellular signal-regulated kinases ERK1 and ERK2 are evolutionarily conserved, ubiquitous serine-threonine kinases that regulate cellular signalling under both normal and pathological conditions. ERK expression is critical for development and their hyperactivation plays a major role in cancer development and progression. The Ras/Raf/MAPK (MEK)/ERK pathway is the most important signalling cascade among all MAPK signal transduction pathways, and plays a crucial role in the survival and development of tumour cells. The present review discusses recent studies on Ras and ERK pathway members. With respect to processes downstream of ERK activation, the role of ERK in tumour proliferation, invasion and metastasis is highlighted, and the role of the ERK/MAPK signalling pathway in tumour extracellular matrix degradation and tumour angiogenesis is emphasised.
Insights
Mitogen-activated protein kinase (MAPK) pathways, particularly the Ras/Raf/MAPK (MEK)/ERK cascade, are vital for cell signaling. Their dysregulation is critical in cancer development, influencing tumor growth, invasion, and angiogenesis.
Area of Science:
- Cellular Biology
- Molecular Oncology
- Signal Transduction
Background:
- Mitogen-activated protein kinase (MAPK) cascades regulate fundamental cellular processes like proliferation, differentiation, and apoptosis.
- Extracellular signal-regulated kinases (ERK1 and ERK2) are crucial serine-threonine kinases involved in normal development and disease.
- Hyperactivation of ERK signaling is a significant driver in cancer development and progression.
Purpose of the Study:
- To review recent research on Ras and ERK pathway members.
- To highlight the role of ERK in tumor proliferation, invasion, and metastasis.
- To emphasize the involvement of the ERK/MAPK pathway in tumor extracellular matrix degradation and angiogenesis.
Main Methods:
- Literature review of recent studies on Ras and ERK pathway members.
- Analysis of downstream effects of ERK activation in cancer.
- Focus on the ERK/MAPK pathway's role in tumor microenvironment modulation.
Main Results:
- The Ras/Raf/MAPK (MEK)/ERK pathway is a critical signaling cascade for tumor cell survival and development.
- ERK activation is implicated in promoting tumor proliferation, invasion, and metastasis.
- The ERK/MAPK pathway contributes to tumor extracellular matrix degradation and angiogenesis.
Conclusions:
- The ERK/MAPK signaling pathway is a key regulator of tumor progression.
- Targeting the Ras/Raf/MEK/ERK pathway presents a potential therapeutic strategy for various cancers.
- Understanding ERK's role in tumor microenvironment dynamics is crucial for developing effective cancer treatments.
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