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. 2013 Oct 3;140(3):301–313. doi: 10.1111/imm.12138

Figure 3.

Figure 3

The effect of Toll-like receptor 4 (TLR4) blockade on lipopolysaccharide- (LPS) or interferon-γ (IFN-γ) -stimulated matrix metalloproteinase 1 (MMP-1) secretion. (a, b) U937 cells cultured in normal (a) or high glucose (b) -containing medium were treated with 100 ng/ml of LPS in the absence or presence of different concentrations (2·5–10 μg/ml) of anti-TLR4 antibodies for 24 hr. After the treatment, MMP-1 in culture medium was quantified using ELISA. (c, d) U937 cells cultured in normal (c) or high glucose (d) -containing medium were treated with 100 units/ml of IFN-γ in the absence or presence of different concentrations (2·5–10 μg/ml) of anti-TLR4 antibodies for 24 hr. After the treatment, MMP-1 secretion was quantified using ELISA.