The abstract is read at the publisher; the summary is JClub's.
Granzyme K deficiency in aged GzmK -/- mice markedly attenuates organ aging, uncoupling tissue decline from persistent immune aging phenotypes.
- Why it matters: Aging links inflammaging and immune dysfunction to tissue deterioration, but it is unclear whether Granzyme K drives organismal decline directly or merely reflects immune aging.
- What they did: The study compared young and aged GzmK -/- mice to assess immune aging hallmarks and organ outcomes, including kidney complement deposition and liver fibrosis with decorin and TGF-β signaling readouts.
- The result: GzmK was dispensable for major immune aging features yet critical for tissue decline; kidney showed reduced complement deposition, while liver showed improved function and reduced fibrosis with increased decorin and reduced pro-fibrotic TGF-β signaling.
The findingWhy it mattersWhat they didThe result
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