Suppression of Tumorigenicity of Human Hepatocellular Carcinoma Cells by Antisense Oligonucleotide MZF-1

Yi-Hsien Hsieh；Trang-Tiau Wu；Chih-Yang Huang；Yih-Shou Hsieh；Jer-Yuh Liu

myeloid zinc finger-1 ； tumorigenesis ； antisense oligonucleotide

The Chinese Journal of Physiology

50卷1期（2007 / 02 / 28）

9 - 15

英文

Our previous studies have found that reducing expression of myeloid zinc finger-1 (MZF-1) inhibited protein kinase C alpha (PKCα) expression and decreased cell migration and invasion in human hepatocellular carcinoma (HCC). In this study, we further investigated the role of MZF-1 in tumorigenesis. The SK-Hep-1 HCC cells were transfected with the antisense oligonucleotide (ODN) of MZF-1. The pretreated cells was then detected the mRNA and protein levels by RT-PCR and western blotting, and the cell growth was assayed by MTT. Meanwhile, the pretreated-SK-Hep-1 HCC cells were implanted subcutaneously into nude mice to observe the tumor growth and calculated tumor inhibitory rate. The results showed that, at the dosage of 5 μM, the antisense ODN MZF-1 suppressed both MZF-1 and PKCα productions by SK-Hep-1 HCC cells after cationic liposome-mediated transfection, to 15% and 30% in control cultures of 0 μM dosage, respectively. The growth of SK-Hep-1 HCC cells was inhibited by the 2-5 μM doses of the antisense ODN MZF-1, whereas the control reagent, the sense ODN MZF-1, showed no effects. In BALB/nude mice, SK-Hep-1 HCC cells pretreated with the 5 μM antisense ODN MZF-1 formed tumors much smaller than the cells with sense ODN. The mean of inhibitory rate of tumor growth was 71.2±8.6%, and the tumor formation time was prolonged from 14 days to 26 days. These findings suggested the usefulness of antisense ODN MZF-1 as a new reagent for cancer therapy.

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