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15-deoxy-△12,14-prostaglandin J2对ECV304细胞增殖与凋亡的影响
AIM: To investigate the effects of 15-deoxy-△12,14-prostaglandin J2 (15d-PGJ2) on cell proliferation and apoptosis in ECV304 endothelial cells and related molecular mechanism. METHODS: MTT, Hoechst33258, TUNEL, Flow cytometry, DNA ladder, RT-PCR, Western blot, and electrophoretic mobility shift assay (EMSA) analysis were employed. RESULTS: The 15d-PGJ2 induced apoptosis in ECV304 endothelial cells in a dose-dependent manner (the percentage of apoptosis was enhanced from 10.0 %+1.3 % to 32.8 %+1.6%), which was accompanied by inhibition of NF-κB and AP-1 DNA binding activity, down-regulation of c-myc, upregulation of Gadd45 and p53,and activation of p38 kinase. However, the expression of p21 was found no significant change. CONCLUSION:peroxisome proliferator-activated receptor gamma ligand, 15d-PGJ2, can inhibit proliferation and induce apoptosis in ECV304 endothelial cells through different mechanisms.
