Telomere maintenance mechanisms in cancer: clinical implications
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Updated: Apr 27, 2026

Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
Published on: May 22, 2013
1Children's Medical Research Institute, 214 Hawkesbury Road, Westmead, New South Wales 2145, Australia. rreddel@cmri.org.au.
Abstract:
The presence of immortal cell populations with an up-regulated telomere maintenance mechanism (TMM) is an almost universal characteristic of cancers, whereas normal somatic cells are unable to prevent proliferation-associated telomere shortening and have a limited proliferative potential. TMMs and related aspects of telomere structure and function therefore appear to be ideal targets for the development of anticancer therapeutics. Such treatments would be targeted to a specific cancer-related molecular abnormality, and also be broad-spectrum in that they would be expected to be potentially applicable to most cancers. However, the telomere biology of normal and malignant human cells is a relatively young research field with large numbers of unanswered questions, so the optimal design of TMM-targeted therapeutic approaches remains unclear. This review outlines the opportunities and challenges presented by telomeres and TMMs for clinical management of cancer.
Insights
Cancer cells possess an active telomere maintenance mechanism (TMM), unlike normal cells. Targeting TMMs offers a promising, broad-spectrum approach for novel cancer therapeutics, despite current research challenges.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cancer cells exhibit immortality due to upregulated telomere maintenance mechanisms (TMMs).
- Normal somatic cells have limited proliferative potential due to telomere shortening.
- Telomere maintenance is a nearly universal hallmark of cancer.
Purpose of the Study:
- To review the opportunities and challenges of targeting telomere maintenance mechanisms (TMMs) for cancer therapy.
- To explore the potential of TMMs as a broad-spectrum therapeutic target for various cancers.
Main Methods:
- Literature review of telomere biology in normal and malignant cells.
- Analysis of telomere maintenance mechanisms (TMMs) as therapeutic targets.
- Discussion of the clinical implications of telomere research in oncology.
Main Results:
- Telomere maintenance mechanisms (TMMs) are upregulated in most cancers, conferring immortality.
- Targeting TMMs presents a strategy for developing broad-spectrum anticancer drugs.
- Significant knowledge gaps remain in understanding telomere biology for optimal therapeutic design.
Conclusions:
- Telomere maintenance mechanisms (TMMs) represent a critical vulnerability in cancer cells.
- Targeting TMMs holds significant promise for novel cancer treatments.
- Further research is needed to overcome challenges in designing effective TMM-targeted therapies.
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