human
The task is to decide the Hallmarks of Cancer (HOC) taxonomy of the article based on its abstract. The input is an abstract text. There are 10 topics you will need to decide whether the article is related to. Topics: sustaining proliferative signaling, evading growth suppressors, resisting cell death, enabling replicative immortality, inducing angiogenesis, activating invasion and metastasis, genomic instability and mutation, tumor promoting inflammation, cellular energetics, avoiding immune destruction. The output should be topics from the above 10 topics, that are related to the input article. Please note one article can be related to multiple topics. Output format: provide a semicolon-separated list of relevant topics.
    ###
    INPUT: Telomerase is a ribonucleoprotein consisting of a catalytic subunit , the telomerase reverse transcriptase , TERT , and an integrally associated RNA , TR , which contains a template for the synthesis of short repetitive G-rich DNA sequences at the ends of telomeres . Telomerase can repetitively reverse transcribe its short RNA template , acting processively to add multiple telomeric repeats onto the same DNA substrate . The contribution of enzyme processivity to telomere length regulation in human cells is not well characterized . In cancer cells , under homeostatic telomere length-maintenance conditions , telomerase acts processively , while under nonequilibrium conditions , telomerase acts distributively on the shortest telomeres . To investigate the role of increased telomerase processivity on telomere length regulation in human cells with limited lifespan that are dependent on human TERT ( hTERT ) for lifespan extension and immortalization , we mutated the leucine at position 866 in the reverse transcriptase C motif of hTERT to a tyrosine ( L866Y ) , which is the amino acid found at a similar position in HIV-1 reverse transcriptase . We report that , similar to the previously reported ' gain of function ' Tetrahymena telomerase mutant ( L813Y ) , the human telomerase variant displays increased processivity. hTERT-L866Y , like wild-type hTERT can immortalize and extend the lifespan of limited lifespan cells . Moreover , hTERT-L866Y expressing cells display heterogenous telomere lengths , telomere elongation , multiple telomeric signals indicative of fragile sites and replicative stress , and an increase in short telomeres , which is accompanied by telomere trimming events . Our results suggest that telomere length and homeostasis in human cells may be regulated by telomerase enzyme processivity .
    OUTPUT:

agent
enabling replicative immortality
The task is to decide the Hallmarks of Cancer (HOC) taxonomy of the article based on its abstract. The input is an abstract text. There are 10 topics you will need to decide whether the article is related to. Topics: sustaining proliferative signaling, evading growth suppressors, resisting cell death, enabling replicative immortality, inducing angiogenesis, activating invasion and metastasis, genomic instability and mutation, tumor promoting inflammation, cellular energetics, avoiding immune destruction. The output should be topics from the above 10 topics, that are related to the input article. Please note one article can be related to multiple topics. Output format: provide a semicolon-separated list of relevant topics.
    ###
    INPUT: Telomerase is a ribonucleoprotein consisting of a catalytic subunit , the telomerase reverse transcriptase , TERT , and an integrally associated RNA , TR , which contains a template for the synthesis of short repetitive G-rich DNA sequences at the ends of telomeres . Telomerase can repetitively reverse transcribe its short RNA template , acting processively to add multiple telomeric repeats onto the same DNA substrate . The contribution of enzyme processivity to telomere length regulation in human cells is not well characterized . In cancer cells , under homeostatic telomere length-maintenance conditions , telomerase acts processively , while under nonequilibrium conditions , telomerase acts distributively on the shortest telomeres . To investigate the role of increased telomerase processivity on telomere length regulation in human cells with limited lifespan that are dependent on human TERT ( hTERT ) for lifespan extension and immortalization , we mutated the leucine at position 866 in the reverse transcriptase C motif of hTERT to a tyrosine ( L866Y ) , which is the amino acid found at a similar position in HIV-1 reverse transcriptase . We report that , similar to the previously reported ' gain of function ' Tetrahymena telomerase mutant ( L813Y ) , the human telomerase variant displays increased processivity. hTERT-L866Y , like wild-type hTERT can immortalize and extend the lifespan of limited lifespan cells . Moreover , hTERT-L866Y expressing cells display heterogenous telomere lengths , telomere elongation , multiple telomeric signals indicative of fragile sites and replicative stress , and an increase in short telomeres , which is accompanied by telomere trimming events . Our results suggest that telomere length and homeostasis in human cells may be regulated by telomerase enzyme processivity .
    OUTPUT:
