The establishment of telomerase-immortalized cell lines representing human chromosome instability syndromes.

Abstract:

:The limited life span of normal human cells represents a substantial obstacle for biochemical analysis, genetic manipulation and genetic screens. To overcome this technical barrier, immortal human cell lines are often derived from tumors or produced by transformation with viral oncogenes such as SV40 large T antigen. Cell lines produced by these approaches are invariably transformed, genomically unstable and display cellular properties that differ from their normal counterpart. It was recently shown that the ectopic expression of hTERT, encoding the catalytic subunit of human telomerase, can extend the life span of normal human cells without causing cellular transformation and genomic instability. In the present study, we have used hTERT to extend the life span of normal human skin fibroblasts derived from patients afflicted with syndromes of genomic instability and/or premature aging. Our results show that hTERT efficiently extends the life span without altering the characteristic phenotypic properties of the cells. Thus, the ectopic expression of telomerase represents a major improvement over the use of viral oncogenes for the establishment of human cell lines.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Ouellette MM,McDaniel LD,Wright WE,Shay JW,Schultz RA

doi

10.1093/hmg/9.3.403

subject

Has Abstract

pub_date

2000-02-12 00:00:00

pages

403-11

issue

3

eissn

0964-6906

issn

1460-2083

pii

ddd049

journal_volume

9

pub_type

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