Shen X, Lin JS, Kong XJ. Maxizyme against mtp53 transfected by adenovirus enhanced transferrin receptor-mediated gene delivery systeminduced apoptosis of hepatoma cells.
Shijie Huaren Xiaohua Zazhi 2004;
12:1539-1542. [DOI:
10.11569/wcjd.v12.i7.1539]
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Abstract
AIM: To evaluate the influence of introduction of maxizyme against mtp53 by adenovirus enhanced transferrin receptor-mediated gene delivery system on MHCC97 cells.
METHODS: Hepatoma cell line MHCC97 containing mutated p53 gene was served as a model. The maxizyme against mtp53 was transfected to the cells by adenovirus enhanced transferrin receptor-mediated gene delivery system. The level of mtp53-mRNA was detected by means of semi-quantitative reverse transcription polymerase chain reaction (RT-PCR). The apoptosis of the hepatoma cells was measured by DNA ladder assay and FCM.
RESULTS: After 48 hours of transfection by AVET system, RT-PCR results indicated the expression of mtp53 mRNA in pEGFP-Maxizyme group was significantly lower than that in control group. And DNA "ladder" with agarose gel electrophoresis was observed in pEGFP-maxizyme group. The result of flow cytometry exhibited apoptotic index in pEGFP-maxizyme group was 22.95%, which was higher than those in blank control group and pEGFP group.
CONCLUSION: The recombinant ribozyme cDNA eukaryotic expression vector pEGFP-maxizyme can be efficiently transfected into MHCC97 cell by adenovirus enhanced transferrin receptor-mediated gene delivery system and the expression of maxizyme may inhibit the mtp53 gene expression and promote apoptosis of MHCC97 cells. The AVET system may be a useful tool in gene delivery for gene therapy of human HCC.
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