Cited by 82Telomeres, Telomerase, and SenescenceGenetic factors in colorectal cancerColorectal Cancer Treatments and Studies

Telomeres, telomerase and colorectal cancer

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Bertorelle, Roberta·2014·World Journal of Gastroenterology

Abstract

Colorectal cancer (CRC) is the third most common cancer worldwide and, despite improved treatments, is still an important cause of cancer-related deaths. CRC encompasses a complex of diseases arising from a multi-step process of genetic and epigenetic events. Besides heterogeneity in the molecular and biological features of CRC, chromosomal instability is a hallmark of cancer and cancer cells may also circumvent replicative senescence and acquire the ability to sustain unlimited proliferation. Telomere/telomerase interplay is an important mechanism involved in both genomic stability and cellular replicative potential, and its dysfunction plays a key role in the oncogenetic process. The erosion of telomeres, mainly because of cell proliferation, may be accelerated by specific alterations in the genes involved in CRC, such as APC and MSH2. Although there is general agreement that the shortening of telomeres plays a role in the early steps of CRC carcinogenesis by promoting chromosomal instability, the prognostic role of telomere length in CRC is still under debate. The activation of telomerase reverse transcriptase (TERT), the catalytic component of the telomerase complex, allows cancer cells to grow indefinitely by maintaining the length of the telomeres, thus favouring tumour formation/progression. Several studies indicate that TERT increases with disease progression, and most studies suggest that telomerase is a useful prognostic factor. Plasma TERT mRNA may also be a promising marker for the minimally invasive monitoring of disease progression and response to therapy.

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  • Researchers have identified telomerase activity as an independent prognostic factor for disease-free survival, recurrence, and overall survival in CRC patients, with high levels of TERT and/or telomerase activity typically associated with poorer prognosis.

    “Researchers have identified TA as an independent prognostic factor for DFS, recurrence, and OS in CRC patients, with high levels of TERT and/or TA typically associated with poorer prognosis [204].”

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Authors
Bertorelle, R.
Affiliations
University of Padua (IT)
Corresponding author
Bertorelle, Roberta
Venue
World Journal of Gastroenterology
Published
2014
Volume
20
Issue
8
Pages
1940
ISSN
1007-9327 (ISSN-L)
OpenAlex
W1993934102
Cited by
82
References
88
Citations by year
2026: 3 · 2025: 5 · 2024: 12 · 2023: 4 · 2022: 7 · 2021: 6 · 2020: 4 · 2019: 7 · 2018: 8 · 2017: 8 · 2016: 12 · 2015: 5 · 2014: 1
FWCI
1.02
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • World Journal of Gastroenterology (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion, cc-by-nc)
  • World Journal of Gastroenterology
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Genetic factors in colorectal cancer
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
Keywords
colorectal cancer, telomeres, telomerase, telomerase reverse transcriptase, chromosomal instability, replicative senescence, APC gene, telomere length, prognostic factors, disease progression monitoring, carcinogenesis
MeSH terms
Cell Transformation, Neoplastic, Chromosomes, DNA, Humans, Prognosis, Biomarkers, Tumor, Colorectal Neoplasms, Telomere, Treatment Outcome, Cellular Senescence, Disease Progression, Telomerase, Chromosomal Instability, Epigenesis, Genetic, Cell Proliferation

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