Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 37, Issue 9, Pages 391-399Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibs.2012.05.004
Keywords
telomere dynamics; nuclear organization; telomerase; RNP maturation; telomerase trafficking
Categories
Funding
- Association pour la Recherche contre le Cancer (ARC)
- Ligue contre le Cancer ('equipe labellisee')
- Institut National du Cancer (INCa)
- Canadian Institutes of Health Research
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The stability of the ends of linear eukaryotic chromosomes is ensured by functional telomeres, which are composed of short, species-specific direct repeat sequences. The maintenance of telomeres depends on a specialized ribonucleoprotein (RNP) called telomerase. Both telomeres and telomerase are dynamic entities with different physical behaviors and, given their substrate enzyme relation, they must establish a productive interaction. Regulatory mechanisms controlling this interaction are key missing elements in our understanding of telomere functions. Here, we review the dynamic properties of telomeres and the maturing telomerase RNPs, and summarize how tracking the timing of their dance during the cell cycle will yield insights into chromosome stability mechanisms. Cancer cells often display loss of genome integrity; therefore, these issues are of particular interest for our understanding of cancer initiation or progression.
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