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Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
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[Effects of antisense oligodeoxynucleotides of human telomerase reverse transcriptase gene on telomerase activity in

Wen-Yu Li1, Yuan Zhang, Dong-Mei He

  • 1Institute of Hematology, Jinan University Medical College, Guangzhou 510632, China.

Zhongguo Shi Yan Xue Ye Xue Za Zhi
|October 25, 2003
PubMed

Insights

Antisense phosphorothioate oligodeoxynucleotide targeting the human telomerase reverse transcriptase (hTERT) gene effectively inhibited telomerase activity in CEM cells. This suggests a potential therapeutic strategy for telomerase-dependent conditions.

Area of Science:

  • Molecular Biology
  • Biochemistry

Context:

  • Telomerase plays a crucial role in cell proliferation and is often upregulated in cancer cells.
  • Human telomerase reverse transcriptase (hTERT) is the catalytic subunit of telomerase and a key target for therapeutic intervention.

Purpose:

  • To investigate the impact of antisense phosphorothioate oligodeoxynucleotide (ASODN) targeting the hTERT gene on telomerase activity and expression in CEM cells.
  • To evaluate the specificity of hTERT ASODN by comparing its effects with sense oligodeoxynucleotide treatment.

Summary:

  • Treatment of CEM cells with hTERT ASODN led to a time-dependent decrease in hTERT mRNA and protein expression.
  • Telomerase activity was significantly inhibited in CEM cells after 48 and 72 hours of hTERT ASODN treatment.
  • No significant changes in hTERT expression or telomerase activity were observed in cells treated with sense oligodeoxynucleotide.

Impact:

  • These findings demonstrate that hTERT ASODN can effectively suppress telomerase activity in CEM cells.
  • This research supports the potential of hTERT ASODN as a therapeutic agent for diseases characterized by elevated telomerase activity, such as cancer.

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