The abstract is read at the publisher; the summary is JClub's.
In a PD1-induced mouse model of immune checkpoint inhibitor-associated myocarditis, AGPAT2 loss increases LPA accumulation that activates LPAR5 to trigger myocardial pyroptosis.
- Why it matters: ICI-associated myocarditis limits PD1 inhibitor use, and the mechanisms linking inflammatory metabolic reprogramming to cardiac injury are unclear.
- What they did: Anti-PD1 was injected into wild-type and AGPAT2 heterozygous knockout mice, with in vitro and in vivo tests of the AGPAT2–LPA pathway and downstream LPAR5 signaling.
- The result: LPAR5 knockdown or TCLPA5-4 inhibition most significantly rescued myocardial pyroptosis, and in a tumor-patient cohort elevated serum LPA was associated with higher ICIAM risk.
The findingWhy it mattersWhat they didThe result
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