Suppression of tumorigenicity of human hepatocellular carcinoma cells by antisense oligonucleotide MZF-1.

Abstract

Our previous studies have found that reducing expression of myeloid zinc finger-1 (MZF-1) inhibited protein kinase C alpha (PKCalpha) 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 microM, the antisense ODN MZF-1 suppressed both MZF-1 and PKCalpha productions by SK-Hep-1 HCC cells after cationic liposome-mediated transfection, to 15% and 30% in control cultures of 0 microM dosage, respectively. The growth of SK-Hep-1 HCC cells was inhibited by the 2-5 microM 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 microM 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.

• Authors: Yi-Hsien Hsieh, Trang-Tiau Wu, Chih-Yang Huang, Yih-Shou Hsieh, Jer-Yuh Liu
• Journal: The Chinese journal of physiology (Chin J Physiol) Vol. 50 Issue 1 Pg. 9-15 (Feb 28 2007) ISSN: 0304-4920 [Print] India
• PMID: 17593797 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Kruppel-Like Transcription Factors
• MZF1 protein, human
• Oligonucleotides, Antisense

Topics

• Animals
• Carcinogenicity Tests
• Carcinoma, Hepatocellular (pathology, prevention & control)
• Cell Division (drug effects)
• Cell Line, Tumor
• Dose-Response Relationship, Drug
• Humans
• Kruppel-Like Transcription Factors (genetics)
• Liver Neoplasms (pathology, prevention & control)
• Mice
• Mice, Inbred BALB C
• Mice, Nude
• Neoplasm Transplantation
• Oligonucleotides, Antisense (administration & dosage, pharmacology)
• Transfection