Journal
JOURNAL OF CLINICAL ONCOLOGY
Volume 21, Issue 10, Pages 2034-2043Publisher
AMER SOC CLINICAL ONCOLOGY
DOI: 10.1200/JCO.2003.06.018
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Funding
- NCI NIH HHS [K01 CA94223] Funding Source: Medline
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Specialized nucleoprotein structures, termed telomeres, cap the ends of human chromosomes. These terminal structures, composed of repetitive arrays of quanine-rich hexameric DNA together with specific telomere-binding proteins, play essential roles in protecting the chromosome from damage and degradation. In addition, several lines of evidence implicate telomere maintenance as an important regulator of cell life span. Activation of telomerase, a dedicated reverse transcriptase that synthesizes telomeric sequences, is strongly associated with cancer, and recent observations confirm that telomeres and telomerase perform important roles in both suppressing and facilitating malignant transformation. These dual functions of telomere biology are evident in the clinical manifestations of the multisystem syndrome, dyskeratosis congenita, forms of which display defects in telomerase function. Recent advances in our understanding of telomere biology indicate that the manipulation of telomeres and telomerase wilt lead to clinically significant applications in the diagnosis, prevention, and treatment of neoplastic disease. (C) 2003 by American Society of Clinical Oncology.
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