T-Rex escaped from the cytosolic park: Re-thinking the impact of TREX1 exonuclease deficiencies on genomic stability

Area of Science:

• Molecular Biology
• Immunology
• Genetics

Background:

• The Three Prime Repair Exonuclease 1 (TREX1) is associated with inflammatory pathologies.
• Dysregulated DNA sensing via the cGAS-STING pathway is implicated in interferonopathies.
• The precise role of TREX1 in genome stability and DNA sensing remains unclear.

Purpose of the Study:

• To explore the molecular functions of TREX1 nuclease.
• To investigate TREX1's role in genome stability and DNA damage response.
• To connect TREX1's functions to inflammation in various pathological contexts.

Main Methods:

• Review of recent findings on TREX1 function.
• Analysis of TREX1's involvement in DNA repair pathways.
• Correlation of TREX1 activity with innate immune signaling.

Main Results:

• TREX1 is crucial for maintaining genome integrity.
• TREX1 activity influences DNA sensing pathways.
• TREX1 connects DNA damage response mechanisms with inflammatory processes.

Conclusions:

• TREX1 functions at the intersection of DNA damage response and inflammation.
• Understanding TREX1 is vital for unraveling the mechanisms of interferonopathies.
• TREX1's role in chromosome stability is central to its pathological relevance.