Arrestins as regulatory hubs in cancer signalling pathways
Hervé Enslen1, Evelyne Lima-Fernandes, Mark G H Scott
1Inserm, U1016, Institut Cochin, 27, Rue du Faubourg Saint Jacques, 75014, Paris, France, herve.enslen@inserm.fr.
Abstract:
Non-visual arrestins were initially appreciated for the roles they play in the negative regulation of G protein-coupled receptors through the processes of desensitisation and endocytosis. The arrestins are also now known as protein scaffolding platforms that act downstream of multiple types of receptors, ensuring relevant transmission of information for an appropriate cellular response. They function as regulatory hubs in several important signalling pathways that are often dysregulated in human cancers. Interestingly, several recent studies have documented changes in expression and localisation of arrestins that occur during cancer progression and that correlate with clinical outcome. Here, we discuss these advances and how changes in expression/localisation may affect functional outputs of arrestins in cancer biology.
Insights
Non-visual arrestins regulate cellular responses and signaling pathways. Changes in arrestin expression and location during cancer progression correlate with patient outcomes, impacting cancer biology.
Area of Science:
- Molecular Biology
- Cellular Biology
- Cancer Biology
Background:
- Non-visual arrestins traditionally regulate G protein-coupled receptors via desensitization and endocytosis.
- Arrestins now recognized as crucial protein scaffolds downstream of various receptors, mediating cellular signaling.
- These arrestins act as regulatory hubs in signaling pathways frequently dysregulated in human cancers.
Purpose of the Study:
- To review recent advances in understanding arrestin roles in cancer.
- To discuss how altered arrestin expression and localization impact cancer progression and clinical outcomes.
Main Methods:
- Literature review of recent studies on arrestins in cancer.
- Analysis of expression and localization changes of arrestins during cancer progression.
- Correlation of these changes with clinical outcomes.
Main Results:
- Recent studies show altered arrestin expression and localization in cancers.
- These alterations correlate with cancer progression and patient clinical outcomes.
- Changes in arrestin function impact cancer biology.
Conclusions:
- Arrestins play multifaceted roles in cancer beyond receptor regulation.
- Altered arrestin expression and localization are significant in cancer progression.
- Further research into arrestin dynamics can inform cancer therapy.
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