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Updated: Jun 23, 2026

Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
Published on: April 13, 2015
Targeting the telosome: therapeutic implications
Marco Folini1, Paolo Gandellini, Nadia Zaffaroni
1Department of Experimental Oncology and Laboratories, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133 Milan, Italy.
Abstract:
Since telomere integrity is required to guarantee the unlimited replicative potential of cancer cells, telomerase, the enzyme responsible for telomere length maintenance in most human tumors, and lately also telomeres themselves have become extremely attractive targets for new anticancer interventions. At the current status of knowledge, it is still not possible to define the best therapeutic target between telomerase and telomeres. It is noteworthy that interfering with telomeres, through direct targeting of telomeric DNA or proteins involved in the telosome complex, could negatively affect the proliferative potential not only of tumors expressing telomerase activity but also of those that maintain their telomeres through alternative lengthening or still unknown mechanisms. This review presents the different therapeutic approaches proposed thus far and developed in preclinical tumor models and discusses the perspectives for their use in the clinical setting.
Insights
Telomeres and telomerase are key targets for cancer therapy. Interfering with telomeres may offer broader anticancer potential than targeting telomerase alone, impacting various tumor types.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Telomere integrity is crucial for cancer cell proliferation.
- Telomerase maintains telomere length in most human tumors.
- Telomeres and telomerase are attractive targets for anticancer interventions.
Purpose of the Study:
- To review therapeutic approaches targeting telomeres and telomerase.
- To compare the potential of targeting telomeres versus telomerase.
- To discuss the clinical perspectives of these anticancer strategies.
Main Methods:
- Review of existing literature on telomere and telomerase-targeting therapies.
- Analysis of preclinical tumor models.
- Discussion of clinical translation challenges and opportunities.
Main Results:
- Both telomerase and telomere-targeting strategies show promise in preclinical models.
- Targeting telomeres may affect a wider range of tumors, including those with alternative lengthening mechanisms.
- The optimal therapeutic target (telomerase vs. telomeres) remains to be definitively established.
Conclusions:
- Therapeutic strategies targeting telomeres and telomerase are under development for cancer treatment.
- Directly targeting telomeres might offer broader efficacy across different tumor types.
- Further research and clinical trials are needed to establish the clinical utility of these approaches.
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