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ERM proteins in cancer progression
Jarama Clucas1, Ferran Valderrama
1Division of Biomedical Sciences, St George's University of London, Cranmer Terrace, London SW17 0RE, UK.
Abstract:
Members of the ezrin-radixin-moesin (ERM) family of proteins are involved in multiple aspects of cell migration by acting both as crosslinkers between the membrane, receptors and the actin cytoskeleton, and as regulators of signalling molecules that are implicated in cell adhesion, cell polarity and migration. Increasing evidence suggests that the regulation of cell signalling and the cytoskeleton by ERM proteins is crucial during cancer progression. Thus, both their expression levels and subcellular localisation would affect tumour progression. High expression of ERM proteins has been shown in a variety of cancers. Mislocalisation of ERM proteins reduces the ability of cells to form cell-cell contacts and, therefore, promotes an invasive phenotype. Similarly, mislocalisation of ERM proteins impairs the formation of receptor complexes and alters the transmission of signals in response to growth factors, thereby facilitating tumour progression. In this Commentary, we address the structure, function and regulation of ERM proteins under normal physiological conditions as well as in cancer progression, with particular emphasis on cancers of epithelial origin, such as those from breast, lung and prostate. We also discuss any recent developments that have added to the understanding of the underlying molecular mechanisms and signalling pathways these proteins are involved in during cancer progression.
Insights
Ezrin-radixin-moesin (ERM) proteins regulate cell migration and signaling. Their altered expression and location are crucial in cancer progression, promoting invasion and tumor growth.
Area of Science:
- Cell Biology
- Molecular Biology
- Oncology
Background:
- Ezrin-radixin-moesin (ERM) proteins link cell membranes to the actin cytoskeleton, influencing cell migration, adhesion, and polarity.
- ERM proteins are increasingly recognized for their critical roles in cancer progression, affecting signaling pathways and cytoskeletal organization.
Purpose of the Study:
- To review the structure, function, and regulation of ERM proteins in normal physiology and cancer.
- To highlight the impact of ERM protein expression and localization on tumor progression, particularly in epithelial cancers.
- To discuss recent advances in understanding the molecular mechanisms and signaling pathways involving ERM proteins in cancer.
Main Methods:
- Literature review and commentary.
- Analysis of existing research on ERM protein function.
- Focus on epithelial cancers including breast, lung, and prostate.
Main Results:
- High ERM protein expression is observed in various cancers.
- Mislocalization of ERM proteins promotes invasive phenotypes by disrupting cell-cell contacts and growth factor signaling.
- ERM protein dysregulation contributes to tumor progression through altered cell signaling and cytoskeletal dynamics.
Conclusions:
- ERM proteins are key regulators of cell behavior with significant implications in cancer.
- Altered ERM protein expression and localization are critical drivers of tumor progression and invasion.
- Further research into ERM protein mechanisms can reveal novel therapeutic targets for epithelial cancers.
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