Figure 4.
Effect of LPS on the expression of miR-138-5p and NLRP3/caspase-1 in RM microglial cells. The qRT-PCR result of (A) miR-138-5p, (B) NLRP3, caspase-1, IL-1β and IL-18 mRNA expression in RM cells at 6 h, 12 h and 24 h after LPS. (C) ELISA assay of IL-1β and IL-18 protein expression. (D) Representative Western blot bands and densitometric analysis of (E) NLRP3 and (F) caspase-1 in RM cells at 6 h, 12 h and 24 h after LPS. (G) Hoechst 33342/PI dual staining assays and counted of cell apoptosis in RM cells at 6 h, 12 h and 24 h after LPS. GAPDH was used as an internal control. Data were presented as mean ± SEM. n = 6 per group. *p < 0.05, **p < 0.01, ***p < 0.001.
Abbreviation: LPS, lipopolysaccharide; RM, rat microglia; PI, propidium iodide.