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Updated: Jun 11, 2025

Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
Published on: April 13, 2015
Telomerase in Cancer Therapeutics
Silvia Siteni1, Anthony Grichuk1, Jerry W Shay2
1University of Texas Southwestern Medical Center, Department of Cell Biology, Dallas, Texas 75390, USA jerry.shay@utsouthwestern.edu.
Abstract:
While silent in normal differentiated human tissues, telomerase is reactivated in most human cancers. Thus, telomerase is an almost universal oncology target. This update describes preclinical and clinical advancements using a variety of approaches to target telomerase. These include direct telomerase inhibitors, G-quadruplex DNA-interacting ligands, telomerase-based vaccine platforms, telomerase promoter-driven attenuated viruses, and telomerase-mediated telomere targeting approaches. While imetelstat has been recently approved by the Food and Drug Administration (FDA), several other approaches are in late-stage clinical development. The pros and cons of the major approaches will be reviewed.
Insights
Telomerase, reactivated in most cancers, is a key oncology target. This review covers diverse preclinical and clinical strategies, including inhibitors and vaccines, with some nearing late-stage development.
Area of Science:
- Oncology
- Molecular Biology
- Drug Development
Background:
- Telomerase is typically silent in normal human tissues but reactivated in most human cancers.
- This reactivation makes telomerase a nearly universal target for cancer therapy.
Purpose of the Study:
- To review preclinical and clinical advancements in targeting telomerase for cancer treatment.
- To discuss various therapeutic approaches and their pros and cons.
Main Methods:
- Review of direct telomerase inhibitors.
- Analysis of G-quadruplex DNA-interacting ligands.
- Evaluation of telomerase-based vaccine platforms.
- Assessment of telomerase promoter-driven attenuated viruses.
- Examination of telomerase-mediated telomere targeting strategies.
Main Results:
- Imetelstat, a telomerase inhibitor, has received FDA approval.
- Several other telomerase-targeting approaches are in late-stage clinical development.
- The review details the advantages and disadvantages of major therapeutic strategies.
Conclusions:
- Targeting telomerase remains a promising strategy in oncology.
- Diverse therapeutic modalities are advancing, offering new hope for cancer patients.
- Continued research and development are crucial for optimizing telomerase-targeted therapies.
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