Now showing items 1-10 of 14
A critical stem-loop structure in the CR4-CR5 domain of mammalian telomerase RNA
(Oxford University Press, 2002-01-15)
Telomerase is an enzyme that maintains telomere length by adding telomeric sequence repeats onto chromosome ends. The telomerase ribonucleoprotein complex consists of two essential components, a reverse transcriptase and ...
Telomere dysfunction triggers developmentally regulated germ cell apoptosis
(American Society for Cell Biology, 2001-07)
Telomere dysfunction results in fertility defects in a number of organisms. Although data from fission yeast and Caenorhabditis elegans suggests that telomere dysfunction manifests itself primarily as defects in proper ...
Short telomeres and ataxia-telangiectasia mutated deficiency cooperatively increase telomere dysfunction and suppress tumorigenesis
(American Association of Cancer Research, 2003-12-01)
To examine the role of ataxia-telangiectasia mutated (Atm) in telomere function, we generated Atm and telomerase null mice (Atm(-/-) mTR(-/-) iG6 mice). These mice exhibited increased germ cell death and chromosome fusions ...
Short telomeres induce a DNA damage response in Saccharomyces cerevisiae
(American Society for Cell Biology, 2003-03)
Telomerase-deficient Saccharomyces cerevisiae cells show a progressive decrease in telomere length. When grown for several days in log phase, the tlc1Delta cells initially display wild-type growth kinetics with subsequent ...
Phosphorylation of H2AX at short telomeres in T cells and fibroblasts
(American Society for Biochemistry and Molecular Biology, 2004-10-22)
Eukaryotic cells undergo arrest and enter apoptosis in response to short telomeres. T cells from late generation mTR(-/-) mice that lack telomerase show increased apoptosis when stimulated to enter the cell cycle. The ...
Telomerase mutations in families with idiopathic pulmonary fibrosis
(Massachusetts Medical Society, 2007-03-29)
BACKGROUND: Idiopathic pulmonary fibrosis is progressive and often fatal; causes of familial clustering of the disease are unknown. Germ-line mutations in the genes hTERT and hTR, encoding telomerase reverse transcriptase ...
Identification of two RNA-binding proteins associated with human telomerase RNA
(American Society for Cell Biology, 2000-03)
Telomerase plays a crucial role in telomere maintenance in vivo. To understand telomerase regulation, we have been characterizing components of the enzyme. To date several components of the mammalian telomerase holoenzyme ...
Telomere Dysfunction Increases Mutation Rate and Genomic Instability
(Cell Press, 2001-08-10)
The increased tumor incidence in telomerase null mice suggests that telomere dysfunction induces genetic instability. To test this directly, we examined mutation rate in the absence of telomerase in S. cerevisiae. The ...
Wild-derived inbred mouse strains have short telomeres
(Oxford University Press, 2000-11-15)
Telomere length and telomerase activity directly affect the replicative capacity of primary human cells. Some have suggested that telomere length influences organismal lifespan. We compared telomere length distributions ...