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Semi-quantitative Detection of RNA-dependent RNA Polymerase Activity of Human Telomerase Reverse Transcriptase Protein
08:26

Semi-quantitative Detection of RNA-dependent RNA Polymerase Activity of Human Telomerase Reverse Transcriptase Protein

Published on: June 12, 2018

Effect of RNA interference targeting human telomerase reverse transcriptase on telomerase and its related protein

Yan Wang1, Hong-Gang Duan, Shi-Ming Chen

  • 1Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China.

The Journal of Laryngology and Otology
|December 13, 2006
PubMed
Abstract

Insights

Short hairpin RNA targeting human telomerase reverse transcriptase messenger RNA inhibited nasopharyngeal carcinoma cell viability. This RNA interference approach regulated telomerase activity and related protein expression, suggesting a potential cancer treatment strategy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Nasopharyngeal carcinoma (NPC) is a significant health concern.
  • Understanding the molecular mechanisms of NPC carcinogenesis is crucial for developing effective treatments.
  • Telomerase plays a role in cancer development and progression.

Purpose of the Study:

  • To investigate the effect of short hairpin RNA (shRNA) targeting human telomerase reverse transcriptase (hTERT) messenger RNA (mRNA) on nasopharyngeal carcinoma cells.
  • To analyze the correlation between telomerase activity and the expression of c-myc, proliferating cell nuclear antigen (PCNA), and Caspase-3.
  • To explore the potential of RNA interference (RNAi) as a therapeutic strategy for NPC.

Main Methods:

  • Construction of shRNA expression vectors targeting hTERT mRNA.
  • Treatment of NPC cells with hTERT-specific shRNA or control vectors.
  • Measurement of telomerase activity using telomeric repeat amplification enzyme-linked immunosorbent assay (TRAP-ELISA).
  • Assessment of cell viability via MTT assay.
  • Determination of protein expression levels (c-myc, PCNA, Caspase-3) using Western blotting.

Main Results:

  • hTERT-specific shRNA significantly inhibited telomerase activity in NPC cells.
  • Expression of c-myc and PCNA was downregulated.
  • Expression of Caspase-3 was upregulated, indicating increased apoptosis.
  • Cell viability was significantly reduced.

Conclusions:

  • shRNA targeting hTERT effectively inhibits NPC cell viability by modulating telomerase activity and related protein expression.
  • RNA interference targeting hTERT presents a promising therapeutic strategy for nasopharyngeal cancer.
  • Further research into RNAi-based therapies for NPC is warranted.

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