Figure 4.
CRO inhibited the lipid droplets formation and regulated the levels of lipid metabolism-related factors in LPA-induced macrophages
(A) The viability of RAW264.7 macrophages after being treated with different concentrations of CRO was detected by MTT assay. (B) The formation of lipid droplets in RAW264.7 macrophages after being treated with LPA or CRO was detected by Oil-red-O staining (magnification × 200). (C) The levels of CE/TC in RAW264.7 macrophages after being treated with LPA or CRO were detected and calculated. (D-I) The protein/β-actin expressions of PPARγ/LXR-α, PCSK9, CD36, and ABCA1 of RAW264.7 macrophages after treated with LPA or CRO were detected by Western blot. β-actin was used as an internal control. ***P < 0.001, vs. Control; #P < 0.05, ##P < 0.01, ###P < 0.001, vs. LPA; ^P< 0.05, ^^P< 0.01, ^^^P< 0.001, vs. LPA + CRO-20. CRO: Crocin, LPA: lysophosphatidic acid, CE: cholesteryl ester, TC: total cholesterol.