Abstract:
:Telomerase is a ribonucleoprotein enzyme that maintains the protective structures at the ends of eukaryotic chromosomes, called telomeres. In most human somatic cells, telomerase expression is repressed, and telomeres shorten progressively with each cell division. In contrast, most human tumors express telomerase, resulting in stabilized telomere length. These observations indicate that telomere maintenance is essential to the proliferation of tumor cells. We show here that expression of a mutant catalytic subunit of human telomerase results in complete inhibition of telomerase activity, reduction in telomere length and death of tumor cells. Moreover, expression of this mutant telomerase eliminated tumorigenicity in vivo. These observations demonstrate that disruption of telomere maintenance limits cellular lifespan in human cancer cells, thus validating human telomerase reverse transcriptase as an important target for the development of anti-neoplastic therapies.
journal_name
Nat Medjournal_title
Nature medicineauthors
Hahn WC,Stewart SA,Brooks MW,York SG,Eaton E,Kurachi A,Beijersbergen RL,Knoll JH,Meyerson M,Weinberg RAdoi
10.1038/13495keywords:
subject
Has Abstractpub_date
1999-10-01 00:00:00pages
1164-70issue
10eissn
1078-8956issn
1546-170Xjournal_volume
5pub_type
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