11a inhibits
Th17 polarization. (A) Serum IL-17 levels
are plotted as mean values of triplicate IL-17 analyses from individual
mice (PBS, n = 12; 11a, n = 13). (B) BmDCs from C57BL/6 mice were preincubated with or without
(11a) (5 μg/mL) for 2 h prior to stimulation with
LPS for 24 h, and TNFα, IL-6, and IL-23 levels were then analyzed.
Data are the mean values (of triplicate samples) ± SEM pooled
from 4 independent experiments. (C) BmDCs from BALB/c mice preincubated
with or without 11a (5 μg/mL) were pulsed with
the indicated concentration of OVA peptide and cocultured with naive
OVA-specific CD4+ T cells (DO.11.10/BALB/c) for 3 days
before measuring IL-17 release. Data are the mean values ± SD
of duplicate samples pooled from two independent experiments (n = 4). (D) Pooled normalized data from four independent
experiments analyzing the effect of 11a on IL-17 release
from bmDC (C57BL/6)-OVA-specific CD4+T cell (OT-II/C57BL/6)
cocultures. Data are presented as the means of the mean percentage
maximum (LPS) response ± SEM where data were normalized to the
LPS response at 10 nM (left), 100 nM (middle), and 300 nM (right)
OVA, respectively. * P < 0.05; ** P < 0.01; *** P < 0.001.