Research Article

Peptidoglycan-Like Components in Z-100, Extracted from Mycobacterium tuberculosis Strain Aoyama B, Increase IL-12p40 via NOD2

Figure 3

PG fragments in Z-100 and their effect on IL-12p40 concentration. (a) IL-12p40 concentration in the culture supernatant of BMDM after stimulation for 24 hours with Z-100 (100 μg/mL), nonanion fraction, or anion fraction. Symbols indicate a significant difference compared with the saline group; (Steel’s multiple comparisons test). Data show the ; per group, pooled from 4 experiments. (b) General PG structure of Mycobacterium tuberculosis and digestion site of mutanolysin. Mutanolysin cleaves the bond between MurNAc and GlcNAc. (c, d) LC-MS/MS analysis of the anion fraction (c) and Z-100 (d). The anion fraction was measured at 100-fold concentration, and Z-100 was measured at 20-fold concentration.
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