Figure 3.
Effects of MI-2 on inflammatory TNFα production in macrophages. (a) TNFα concentrations in the culture supernatants from untreated or LPS-treated macrophages, with or without MI-2 treatment, as measured by ELISA. Pooled results are shown from 3 independent experiments. ** and *** indicate significant differences based on 2-tailed unpaired Student’s t-tests at P < 0.01 and P < 0.001, respectively. The error bars show the s.e.m. values. (b) Human monocytes were incubated in differentiation medium (α-MEM containing 10% FBS, and 20 ng/mL MCSF), with or without 10 ng/mL LPS, at the indicated time points. Protein expression in the cell lysates was analysed by immunoblotting with antibodies against phosphor-p65 (p-p65), p65, phosphor-IkBα (p-IkBα), and IkBα. β-actin expression was analysed as a loading control. Full-length blots are presented in Supplementary Figure 2. The results shown are representative of 3 independent experiments. (c) Human monocytes were incubated in differentiation medium (α-MEM containing 10% FBS, and 20 ng/mL MCSF), with or without 10 ng/mL LPS, for 5 min. Protein expression in the cell lysates was analysed by immunoblotting with antibodies against A20. β-actin expression was analysed as a loading control. Full-length blots are presented in Supplementary Figure 3. The results shown are representative of 3 independent experiments. (d–e) The densities of p-p65, p65, p-IkBα, and IkBα bands were measured and normalised to β-actin levels. The p-p65/p65 and p-IkBα/β-actin ratios are shown. Pooled results are shown from 3 independent experiments. * and ** indicate significant differences from control (untreated) cells based on 2-tailed unpaired Student’s t-tests at P < 0.05 and P < 0.01, respectively. The error bars show the s.e.m. values.