Objective:
To explore the role of the cGAS–STING pathway in uveitis and its potential as a therapeutic target.
Key Findings:
- cGAS–STING pathway is strongly activated in inflamed retinas.
- Mitochondrial DNA accumulates in the cytoplasm post-LPS exposure, triggering cGAS activation.
- Cgas knockout mice showed significantly reduced ocular inflammation compared to wild-type mice.
- Absence of cGAS led to decreased retinal macrophage recruitment and increased regulatory T cells.
Interpretation:
The cGAS–STING pathway is a central driver of inflammation in uveitis, suggesting it could be a novel therapeutic target.
Limitations:
- Further validation in human tissues is needed.
- Uncertainty whether STING-dependent mechanisms are solely responsible for the observed effects.
Conclusion:
Targeting the cGAS–STING pathway may provide a new strategy for treating refractory uveitis, pending further research.
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