676 11 FEBRUARY 2022¥VOL 375 ISSUE 6581 science.orgSCIENCE
AB CKWT
Pla2g7KO0246810ASC speck% of containing ASC cells**ActinLysoPC
OxPAPCWT WT KO WT KO WT KO20kDaProCasp1Casp1LPS LPS+CeramideWT
Pla2g7KO020406080WT
Pla2g7KO01234 *WT
Pla2g7KO020406080WT
Pla2g7
KO020406080WT
Pla2g7KO050100150200250WT
Pla2g7KO0123IL1β (Fold)*WT
Pla2g7KO02468(^10) *
Adipose - 24 month old Adipose - 24 month old Adipose - 24 month old
F G H I
PLA2G7
NAC
C6
LPS
ProCasp1Casp1
p20p20Casp1PLA2G7
Flagellin
Poly(da:dT)
C6
LPSProCasp124 month oldpla2g7+/+
pla2g7-/-L MDJWT
Pla2g7KO051015
20406080100TNFa (pg/ml)*Procasp1p20actinLPS - - + + + + + + + + + +ATP MSU C6 NaArs Silica
WT KO WT KO WT KO WT KO WT KO WT KOIL6 (pg/ml)
IL1β (pg/ml)Gro-alpha/KC (pg/ml)MCP1 (pg/ml)Eotaxin (pg/ml)PPARα (Fold)Relative expressionIL1βRelative expressionCaspase 1
Relative expressionPparαRelative expressionAcvr1c% of cells containing specksEFig. 4. Inhibition of PLA2G7 protects against inflammaging and thymic
lipoatrophy(A) Circulating proinflammatory cytokines (TNF-a, IL-6, IL-1b,
Gro-alphaK/C, MCP-1, and Eotaxin) from serum in 24-month-old control and
Pla2g7–/–mice (B) qPCR analysis of relative expression ofIl-1bandPpara
compared withGapdhin sorted F4/80+cells from visceral adipose tissues in
24-month-old control and Pla2g7 KO mice and Caspase 1 protein expression in
the adipose tissue of 24-month-old control andPla2g7–/–deficient mice
(n= 3 and 3, respectively). (CandD) qPCR analysis of the proinflammatory
genesIl-1bandCasp1in the visceral adipose tissue of control and Pla2g7 KO
mice. (C and D) The CR-regulated fatty acid oxidation inducersPparaandAcvr1c
in subcutaneous adipose tissue (SAT) of 24-month-old control (C) and Pla2g7
KO mice (n= 5, 5) (D). (E) FACS analysis of proportions of different immune cellRESEARCH | REPORTS