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Telomere Biology and Human Phenotype.

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Telomere shortening, linked to cell division and aging, impacts genome stability. This review explores telomere homeostasis and its relation to aging and age-related diseases.

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Area of Science:

  • Genetics
  • Cell Biology
  • Gerontology

Background:

  • Telomeres are protective caps at chromosome ends, crucial for genome stability.
  • Telomere length decreases with cell division (replicative capacity) and in vivo aging.
  • Telomere attrition is a hallmark of cellular aging and organismal aging.

Purpose of the Study:

  • To review mechanisms driving telomere shortening.
  • To summarize human telomere homeostasis across the lifespan.
  • To examine the link between telomere shortening, aging, and age-related diseases.

Main Methods:

  • Literature review of studies on telomere biology.
  • Synthesis of evidence on telomere dynamics in humans.
  • Analysis of the correlation between telomere length and aging processes.

Main Results:

  • Telomere shortening is a fundamental process associated with cellular replication and organismal aging.
  • Telomere homeostasis is tightly regulated throughout human life.
  • Evidence strongly links progressive telomere loss to aging phenotypes and increased risk of age-related diseases.

Conclusions:

  • Telomere attrition is a key factor in human aging and the development of associated pathologies.
  • Understanding telomere dynamics offers insights into aging mechanisms and potential therapeutic targets.
  • Maintaining telomere length may be critical for healthspan and longevity.