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Telomere biology in stem cells and reprogramming.

Luis F Z Batista1

  • 1Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri, USA.

Progress in Molecular Biology and Translational Science
|July 5, 2014
PubMed
Summary

Telomerase is crucial for stem cell function and tissue health, but its regulation during development remains unclear. This chapter explores telomere homeostasis and telomerase

Keywords:
ES cellsPluripotencyReprogrammingSelf-renewalStem cellsTERTTelomeraseTelomereiPS cells

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Area of Science:

  • Stem cell biology
  • Molecular genetics
  • Developmental biology

Background:

  • Telomerase expression is typically limited to stem and progenitor cells in humans, with silencing in most somatic tissues.
  • Maintaining telomere length is vital for the function of embryonic and adult stem cells, ensuring tissue homeostasis.
  • Mutations affecting telomerase lead to impaired stem cell function and associated tissue dysfunction in patients.

Purpose of the Study:

  • To analyze recent advancements in understanding telomerase regulation during development.
  • To highlight the significance of telomere homeostasis in various stem cell types.
  • To examine the role of telomerase in cellular reprogramming techniques.

Main Methods:

  • Review of current literature on telomerase regulation and stem cell biology.
  • Analysis of studies investigating telomere homeostasis in different stem cell populations.
  • Examination of research on telomerase's function in cellular reprogramming.

Main Results:

  • Efficient telomere maintenance by telomerase is critical for stem cell function and organismal health.
  • Dysfunctional telomerase impacts stem cell capabilities and can lead to tissue problems.
  • Understanding telomerase regulation is key to advancing stem cell therapies and reprogramming.

Conclusions:

  • Telomerase plays a fundamental role in maintaining stem cell populations and overall tissue integrity.
  • Further research into telomerase regulation mechanisms is essential, particularly given challenges with pluripotent stem cell cultures.
  • Insights into telomerase function are crucial for developing novel therapeutic strategies involving cellular reprogramming.