| Autor: |
Maximilian Hirschenberger, Alice Lepelley, Ulrich Rupp, Susanne Klute, Victoria Hunszinger, Lennart Koepke, Veronika Merold, Blaise Didry-Barca, Fanny Wondany, Tim Bergner, Tatiana Moreau, Mathieu P. Rodero, Reinhild Rösler, Sebastian Wiese, Stefano Volpi, Marco Gattorno, Riccardo Papa, Sally-Ann Lynch, Marte G. Haug, Gunnar Houge, Kristen M. Wigby, Jessica Sprague, Jerica Lenberg, Clarissa Read, Paul Walther, Jens Michaelis, Frank Kirchhoff, Carina C. de Oliveira Mann, Yanick J. Crow, Konstantin M. J. Sparrer |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Nature Communications, Vol 14, Iss 1, Pp 1-20 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2041-1723 |
| DOI: |
10.1038/s41467-023-42150-4 |
| Popis: |
Abstract Type I interferon (IFN) signalling is tightly controlled. Upon recognition of DNA by cyclic GMP-AMP synthase (cGAS), stimulator of interferon genes (STING) translocates along the endoplasmic reticulum (ER)-Golgi axis to induce IFN signalling. Termination is achieved through autophagic degradation or recycling of STING by retrograde Golgi-to-ER transport. Here, we identify the GTPase ADP-ribosylation factor 1 (ARF1) as a crucial negative regulator of cGAS-STING signalling. Heterozygous ARF1 missense mutations cause a previously unrecognized type I interferonopathy associated with enhanced IFN-stimulated gene expression. Disease-associated, GTPase-defective ARF1 increases cGAS-STING dependent type I IFN signalling in cell lines and primary patient cells. Mechanistically, mutated ARF1 perturbs mitochondrial morphology, causing cGAS activation by aberrant mitochondrial DNA release, and leads to accumulation of active STING at the Golgi/ERGIC due to defective retrograde transport. Our data show an unexpected dual role of ARF1 in maintaining cGAS-STING homeostasis, through promotion of mitochondrial integrity and STING recycling. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full text from SpringerLink