Sorting Nexin 27 as a potential target in G protein‑coupled receptor recycling for cancer therapy (Review)
Zixu Bao1, Shijun Zhou2, Haisheng Zhou1
1Department of Biochemistry and Molecular Biology, Anhui Medical University, Hefei, Anhui 230032, P.R. China.
Abstract:
G protein‑coupled receptors (GPCRs) are the largest family of membrane receptors and activate several downstream signaling pathways involved in numerous physiological cellular processes. GPCRs are usually internalized and desensitized by intracellular signals. Numerous studies have shown that several GPCRs interact with sorting nexin 27 (SNX27), a cargo selector of the retromer complex, and are recycled from endosomes to the plasma membrane. Recycled GPCRs usually contain specific C‑terminal postsynaptic density protein 95/Discs large protein/Zonula occludens 1 (PDZ) binding motifs, which are specifically recognized by SNX27, and return to the cell surface as functionally naïve receptors. Aberrant endosome‑to‑membrane recycling of GPCRs mediated by SNX27 may serve a critical role in cancer growth and development. Therefore, SNX27 may be a novel target for cancer therapies.
Insights
Sorting nexin 27 (SNX27) mediates the recycling of G protein-coupled receptors (GPCRs) from endosomes back to the cell surface. Aberrant SNX27-mediated GPCR recycling is implicated in cancer development, suggesting SNX27 as a potential therapeutic target.
Area of Science:
- Cell Biology
- Molecular Biology
- Oncology
Background:
- G protein-coupled receptors (GPCRs) are crucial membrane proteins regulating cellular processes.
- GPCRs undergo internalization and desensitization.
- Sorting nexin 27 (SNX27) is a key regulator of protein trafficking via the retromer complex.
Purpose of the Study:
- To investigate the role of SNX27 in GPCR recycling.
- To explore the potential of SNX27 as a therapeutic target in cancer.
Main Methods:
- Studies involving the interaction between GPCRs and SNX27.
- Analysis of GPCRs C-terminal PDZ binding motifs.
- Investigation of endosome-to-membrane recycling pathways.
Main Results:
- SNX27 interacts with specific GPCRs containing PDZ binding motifs.
- SNX27 facilitates the recycling of GPCRs from endosomes to the plasma membrane.
- Aberrant SNX27-mediated GPCR recycling is linked to cancer progression.
Conclusions:
- SNX27 plays a significant role in the functional recycling of GPCRs.
- Dysregulated SNX27 activity in GPCR recycling may contribute to cancer.
- SNX27 represents a promising novel target for cancer therapies.
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