The complex nature of CXCR4 mutations in WHIM syndrome.
| Autor: | Rodríguez-Frade JM; Department of Immunology and Oncology, Chemokine Signaling Group, Centro Nacional de Biotecnología/CSIC, Madrid, Spain., González-Granado LI; Department of Pediatrics, 12 de Octubre Health Research Institute (imas12), Madrid, Spain.; Department of Public Health School of Medicine, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain., Santiago CA; X-ray Crystallography Unit, Centro Nacional de Biotecnología/Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain., Mellado M; Department of Immunology and Oncology, Chemokine Signaling Group, Centro Nacional de Biotecnología/CSIC, Madrid, Spain. |
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| Jazyk: | angličtina |
| Zdroj: | Frontiers in immunology [Front Immunol] 2024 Jul 05; Vol. 15, pp. 1406532. Date of Electronic Publication: 2024 Jul 05 (Print Publication: 2024). |
| DOI: | 10.3389/fimmu.2024.1406532 |
| Abstrakt: | Heterozygous autosomal dominant mutations in the CXCR4 gene cause WHIM syndrome, a severe combined immunodeficiency disorder. The mutations primarily affect the C-terminal region of the CXCR4 chemokine receptor, specifically several potential phosphorylation sites critical for agonist (CXCL12)-mediated receptor internalization and desensitization. Mutant receptors have a prolonged residence time on the cell surface, leading to hyperactive signaling that is responsible for some of the symptoms of WHIM syndrome. Recent studies have shown that the situation is more complex than originally thought, as mutant WHIM receptors and CXCR4 exhibit different dynamics at the cell membrane, which also influences their respective cellular functions. This review examines the functional mechanisms of CXCR4 and the impact of WHIM mutations in both physiological and pathological conditions. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision. (Copyright © 2024 Rodríguez-Frade, González-Granado, Santiago and Mellado.) |
| Databáze: | MEDLINE |
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