DNA-protein cross-links promote cGAS-STING-driven premature aging and embryonic lethality.

Science 2026

Tomaskovic I, Prieto-Garcia C, Boskovic M, Glumac M, Tsai TL et al.

Abstract

DNA-protein cross-links (DPCs) are highly toxic DNA lesions that block replication and transcription, but their impact on organismal physiology is unclear. We identified a role for the metalloprotease SPRTN in preventing DPC-driven immunity and its pathological consequences. Loss of SPRTN activity during replication and mitosis lead to unresolved DNA damage, chromosome segregation errors, micronuclei formation, and cytosolic DNA release that activates the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway. In a

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