S100A8 attenuated LPS-induced inflammation via TLR4
TLR4 knockout (TLR4KO) mice or wild-type (WT) mice at 12 weeks of age were used for experiments.
(A) Peritoneal macrophages from the indicated mice were incubated with PBS, LPS (2 μg/mL), or S100A8 (0.3 μg/mL) for 2 h and then analyzed by qPCR. mRNA expression of the indicated inflammatory cytokine and S100 genes in peritoneal macrophages (n = 3).
(B) Peritoneal macrophages from the indicated mice were pretreated with PBS or S100A8 (0.3 μg/mL) for 30 min before LPS (2 μg/mL) stimulation for 2 h and then analyzed by qPCR. mRNA expression of the indicated inflammatory cytokine and S100 genes in peritoneal macrophages (n = 3).
All data from three independent experiments are represented as the mean ± SEM ∗p < 0.05, ∗∗p < 0.01.