Figure 3. The effect of IL-1 pre-treatment on the production of CXCL1, 2, and 8 induced by IL-1 re-stimulation.
(a) The effect of IL-1β pre-treatment on the mRNA production of CXCL1, 2, and 8 induced by IL-1β re-stimulation. HMC cells, pre-treated with the indicated concentrations of IL-1β for 24 h, were re-stimulated with 5 ng/ml IL-1β for 1 h. The mRNA levels of CXCL1, 2, and 8 were detected by qRT-PCR. (b) The effect of IL-1β pre-treatment on the protein induction of CXCL1, 2, and 8 induced by IL-1β re-stimulation. HMC cells, pre-treated with the indicated concentrations of IL-1β for 24 h, were re-treated with 5 ng/ml IL-1β for 6 h. The protein levels of CXCL1, 2, and 8 were detected by ELISA. (c) The effect of IL-1α pre-treatment on the mRNA production of CXCL1, 2, and 8 induced by IL-1α re-stimulation. (d) The effect of IL-1α pre-treatment on the protein induction of CXCL1, 2, and 8 induced by IL-1β re-stimulation. (e) The effect of IL-1β pre-treatment on the protein induction of CXCL1, 2, and 8 induced by IL-1α re-stimulation. p-value *< 0.05, **< 0.01, and ***< 0.001 compared with the IL-1-treated alone groups.