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Related Experiment Videos

[Progress on telomere and telomerase].

Xuelian Yang1, Maoxuan Tao

  • 1Institute of Environment Health and Related Product Safety, Chinese Center for Disease Control and Prevention, Beijing 100021, China.

Wei Sheng Yan Jiu = Journal of Hygiene Research
|June 24, 2004
PubMed
Summary

Telomeres protect chromosome ends, and telomerase regulates their activity. This enzyme

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Area of Science:

  • Molecular Biology
  • Genetics
  • Cell Biology

Context:

  • Telomeres, the protective caps of eukaryotic chromosomes, consist of TTAGGG repeats.
  • Telomerase, a ribonucleoprotein complex, maintains telomere length and stability.
  • Telomerase activity is crucial for cellular processes but is tightly regulated.

Purpose:

  • To review the regulatory mechanisms controlling telomerase activity.
  • To explore factors influencing telomerase expression and function in various cellular contexts.

Summary:

  • Telomerase activity, normally repressed post-birth, is reactivated in over 90% of cancer cells via hTERT upregulation.
  • Mechanisms of telomerase regulation are complex and involve multiple control levels.
  • Key regulatory factors include cell differentiation, molecular interactions, and the cell cycle.

Impact:

  • Understanding telomerase regulation is vital for cancer research and therapeutic development.
  • Elucidating these mechanisms can reveal new targets for anti-cancer strategies.
  • This review consolidates current knowledge on telomerase control in different cell types.

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