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Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
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[Study on induction of leukemic cell apoptosis by antisense oligodeoxynucleotide of human telomerase RNA]

W Xie1, M Lin

  • 1Department of Hematology, First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou 310003, China.

Zhonghua Xue Ye Xue Za Zhi = Zhonghua Xueyexue Zazhi
|March 6, 2002
PubMed
Abstract

Insights

Human telomerase RNA antisense oligodeoxynucleotide (As-ODN) specifically inhibits telomerase activity in leukemic cells, leading to reduced proliferation and induced apoptosis. This demonstrates As-ODN

Area of Science:

  • Molecular biology
  • Cancer research
  • Oligonucleotide therapeutics

Context:

  • Leukemic cells often exhibit high telomerase activity, contributing to their uncontrolled proliferation.
  • Telomerase is a key enzyme in maintaining telomere length, essential for cancer cell immortality.
  • Antisense oligodeoxynucleotides (As-ODN) offer a targeted approach to inhibit specific gene functions.

Purpose:

  • To investigate the antitumor effects of human telomerase RNA antisense oligodeoxynucleotide (As-ODN) on leukemic cells.
  • To elucidate the underlying mechanisms of As-ODN's action, including its impact on telomerase activity and apoptosis.

Summary:

  • Liposomal transfection of As-ODN into HL-60 leukemic cells significantly reduced telomerase activity in a dose- and time-dependent manner.
  • As-ODN treatment led to decreased cell proliferation and induced apoptosis, confirmed by morphological, electrophoretic, and flow cytometry analyses.
  • Control missense ODN (Ms-ODN) did not produce similar inhibitory effects, indicating the specificity of As-ODN.

Impact:

  • As-ODN demonstrates specific inhibitory activity against telomerase in leukemic cells.
  • This study supports the potential of As-ODN as a therapeutic agent for leukemia by inducing cancer cell death.
  • Findings highlight the role of telomerase inhibition as a viable strategy in cancer treatment.

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