The abstract is read at the publisher; the summary is JClub's.
KAT7 (HBO1) is elevated in microglia from 5×FAD mice and human AD brains and drives mtDNA-driven innate immune signaling via Cmpk2-dependent mitochondrial activation.
- Why it matters: Chronic neuroinflammation in Alzheimer’s disease is sustained by mtDNA-triggered innate pathways, but the microglial epigenetic control of this signaling is unclear.
- What they did: Using integrative transcriptomic and epigenomic analyses, the study links KAT7 and H3K14ac to Cmpk2 transcription, then tests KAT7 loss or pharmacologic inhibition for effects on mtDNA replication, release, and cGAS–STING/NLRP3 signaling.
- The result: Microglia-specific deletion or KAT7 inhibition suppresses cytosolic mtDNA-induced neuroinflammation, lowers β-amyloid burden, restores synaptic plasticity, and improves cognition in 5×FAD mice.
The findingWhy it mattersWhat they didThe result
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