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Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
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Telomere length reprogramming in embryos and stem cells.

Keri Kalmbach1, LeRoy G Robinson1, Fang Wang1

  • 1Department of Obstetrics and Gynecology, New York University Langone Medical Center, 180 Varick Street, No. 761, New York, NY 10014, USA.

Biomed Research International
|April 11, 2014
PubMed
Summary
This summary is machine-generated.

Telomere length shortens with age and impacts health and reproduction. This review explores alternative lengthening mechanisms crucial for resetting telomeres in early embryos and stem cells for generational health.

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Area of Science:

  • Genetics
  • Cell Biology
  • Developmental Biology

Background:

  • Telomeres are protective caps on chromosome ends that shorten with age.
  • Short telomeres are linked to age-related diseases and premature aging syndromes.
  • Telomere length is critical for embryonic development and must be reset across generations.

Purpose of the Study:

  • To review the mechanisms of telomere maintenance.
  • To highlight alternative lengthening pathways beyond telomerase.
  • To discuss the role of these mechanisms in cellular reprogramming and early development.

Main Methods:

  • Literature review of recent studies on telomere biology.
  • Analysis of research on telomere lengthening mechanisms in stem cells and embryos.
  • Synthesis of findings on alternative lengthening of telomeres (ALT).

Main Results:

  • Telomere attrition is a hallmark of aging.
  • Alternative lengthening of telomeres (ALT) plays a significant role in reprogramming.
  • These mechanisms are essential for maintaining genomic stability in pluripotent cells.

Conclusions:

  • Telomere maintenance is vital for organismal health and generational continuity.
  • Alternative lengthening mechanisms are key to telomere resetting in early development.
  • Understanding these pathways offers insights into aging and regenerative medicine.