Role of peroxisome proliferator-activated receptor ? in multidrug resistance of human hepatocellular carcinoma / 中国普通外科杂志

ABSTRACT

Objective To study the role of PPARa gene in human hepatocellular carcinoma. Methods Transmission elctron microscopy was used to study the morphologic differences between the MDR cell line HepG2/ADM and its mother cell line HepG2;Real-time RT-PCR and Western blotting were used to check the expression of PPARa in mRNA level and protein level in the two cell lines respectively. Results Transmission elctron microscopy showed that the HepG2/ADM cells had more viliformed maculas on their nuclear memberanes, more vacuoles in their cytoplasmas, more rough endoplastic reticulums; the PPARa gene was down regulated in the HepG2/ADM cells. Conclusion PPARa is related with the multidrug resistance phenomenon in the HepG2/ADM cells. The down regulation of PPARa may be one of the mechanisms conferring the forming of MDR in tumor cells.