PMID: 15387948Sep 25, 2004Paper

A DNA vector-based RNAi technology to inhibit the activity of the telomerase of cell line HCCLM3

Zhonghua yi xue za zhi
Xiaodong LuSheng-li Yang

Abstract

To develop a DNA vector-based RNA interference (RNAi) technology that inhibits the activity of the telomerase of the hepatocellular carcinoma cell line HCCLM3 in order to suppress the proliferation of the cells. Hepatocellular carcinoma cells of the line HCCLM3 were cultured. mRNA interfering double-stranded DNA vector PSG-AS targeting the mRNA of human telomerase reverse transcriptase (hTERT) and the control vector PSG-CTR were constructed respectively, and then were transfected into the HCCLM3 cells. The expression of hTERT of the transfected cells was determined by Western blotting and the activity of telomerase was determined by telomeric repeat amplification-ELISA (TRAP-ELISA). Flow cytometry was used to detect the apoptosis of transfected cells and MTS method was used to measure the growth curve of the cells so as to observe the effect of the PSG-AS on the proliferation of HCCLM3 cell. TRAP-ELISA showed that the inhibition rate of PSG-AS on the telomerase activity was 76%. The apoptotic rate of the PSG-AS group was significantly higher than that of the PSG-CTR group (t = 11.48, P < 0.001). Western blotting showed a remarkable inhibition of hTERT protein in the PSG-AS group. Capable of suppressing the hTERT expression and ...Continue Reading

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Carcinoma, Hepatocellular

Hepatocellular Carcinoma is a malignant cancer in liver epithelial cells. Discover the latest research on Hepatocellular Carcinoma here.

Apoptosis

Apoptosis is a specific process that leads to programmed cell death through the activation of an evolutionary conserved intracellular pathway leading to pathognomic cellular changes distinct from cellular necrosis

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