Cited by 1,650Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsChromosomal and Genetic Variations

Telomere reduction in human colorectal carcinoma and with ageing

Hastie, Nicholas D., Dempster, Maureen, Dunlop, Malcolm G., Thompson, Alastair M., Green, Daryll K., Allshire, Robin C.·1990·Nature

Abstract

We have hypothesized that end-to-end chromosome fusions observed in some tumours could play a part in genetic instability associated with tumorigenesis and that fusion may result from the loss of the long stretches of G-rich repeats found at the ends of all linear chromosomes. We therefore asked whether there is telomere loss or reduction in common tumours. Here we show that in most of the colorectal carcinomas that we analysed, there is a reduction in the length of telomere repeat arrays relative to the normal colonic mucosa from the same patient. We speculate on the consequences of this loss for tumorigenesis. We also show that the telomere arrays are much smaller in colonic mucosa and blood than in fetal tissue and sperm, and that there is a reduction in average telomere length with age in blood and colon mucosa. We propose that the telomerase is inactive in somatic tissues, and that telomere length is an indicator of the number of cell divisions that it has taken to form a particular tissue and possibly to generate tumours.

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Registry

Crossref · 10.1038/346866a0

Cites

4 of 4 references verified0 citation errors · 0 not checkable

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  • Shorter telomeres are frequently observed in cancer relative to adjacent normal tissue.

    “Shorter telomeres are frequently observed in cancer relative to their adjacent normal tissue135–142.”
  • Without telomerase, continued cell division leads to telomere shortening, loss of capping function, and p53 activation.

    “In the absence of telomerase, continued cell division results in telomere shortening, loss of ‘capping’ function, and p53 activation12-15.”
  • Telomere length is influenced by many different factors, including age and the number of generations the mutation is transmitted.

    “Telomere length is influenced by many different factors, including age (13, 14) and the number of generations the mutation is transmitted (6, 15).”
  • Most normal human cells have low or undetectable telomerase, and their telomeric DNA is lost at 30-120 bp per replication cycle.

    “In most normal human cells, telomerase activity is low or not detectable, and telomeric DNA is progressively lost at a rate of 30±120 bp with each replication cycle (Harley et al., 1990;Hastie et al., 1990;Counter et al., 1992).”

    From A highly selective telomerase inhibitor limiting human cancer cell proliferation (2001) · cites this paper as Hastie et al., 1990

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Authors
Hastie, N. D., Dempster, M., Dunlop, M. G., Thompson, A. M., Green, D. K., & Allshire, R. C.
Affiliations
  • Western General Hospital (GB)
  • Cold Spring Harbor Laboratory (US)
Venue
Nature
Published
1990-08
Volume
346
Issue
6287
Pages
866-868
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2088672106
Cited by
1,650
References
4
Citations by year
2026: 8 · 2025: 8 · 2024: 16 · 2023: 12 · 2022: 23 · 2021: 25 · 2020: 27 · 2019: 27 · 2018: 31 · 2017: 29 · 2016: 22 · 2015: 35 · 2014: 33 · 2013: 40 · 2012: 46
FWCI
24.79
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
telomere length, telomere shortening, colorectal cancer, aging, telomerase, chromosome fusion, genomic instability, carcinogenesis, cell division, colonic mucosa, somatic tissues
MeSH terms
Adenoma, Aging, Autoradiography, Carcinoma, Cell Division, Chromosomes, DNA, DNA Nucleotidylexotransferase, Humans, Intestinal Mucosa, Nucleic Acid Hybridization, Repetitive Sequences, Nucleic Acid, Colorectal Neoplasms, Deoxyribonucleases, Type II Site-Specific, Oligonucleotide Probes

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