Figure 1

L-cystathionine inhibited the expression of MCP-1 induced by ox-LDL in the THP-1-derived macrophage. The cells were pretreated with L-cystathionine (0.1 mmol/L, 0.3 mmol/L or 1.0 mmol/L, respectively) for 30 min and were then stimulated with 50 mg/L ox-LDL for 24 h. (A) The content of MCP-1 in the supernatant of THP-1-derived macrophage detected by ELISA. (B) The expression of MCP-1 protein in the THP-1-derived macrophage detected by western blot. (C, D) The basal expression of MCP-1 without ox-LDL incubation detected by ELISA and western blot. L-Cth: L-cystathionine. **P < 0.01 compared with control group, ##p < 0.01 compared with ox-LDL group. Data are presented as mean ± SD (n = 3) of three independent experiments performed in triplicate.