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Updated: May 7, 2026

Semi-quantitative Detection of RNA-dependent RNA Polymerase Activity of Human Telomerase Reverse Transcriptase Protein
Published on: June 12, 2018
Telomerase regulation: a key to inhibition? (Review)
Diego L Mengual Gómez1, Hernán G Farina, Daniel E Gómez
1Laboratory of Molecular Oncology, Science and Technology Department, National University of Quilmes, Buenos Aires, Argentina.
Abstract:
Telomerase has been recognized as a common factor in most tumor cells, and in turn a distinctive feature with respect to non-malignant cells. This feature has made telomerase a promising target for cancer therapy. Telomerase studies revealed that it is a multi-subunit complex possessing different levels of regulation, including control of expression, phosphorylation state, assembly and transportation to sites of activity. Thus, we emphasize that targeting telomerase expression or activity is not the only way to shorten telomeres, induce cell senescence and apoptosis. Therefore, there are multiple sites capable of allowing the modulation of its enzymatic activity. In the development of strategies based on the regulation of telomerase activity the understanding of the mechanisms regulating their subunits is essential. Based on this, in this review we summarize the current state of knowledge of some regulatory mechanisms of the components of the telomerase complex, and hypothetize their potential therapeutic application against cancer.
Insights
Telomerase, a key factor in cancer cells, offers multiple therapeutic targets beyond just expression or activity. Understanding its subunit regulation is essential for novel cancer treatment strategies.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Telomerase is frequently found in tumor cells but not normal cells, making it a significant cancer therapy target.
- Telomerase is a complex enzyme with multiple regulatory mechanisms, including expression, phosphorylation, assembly, and localization.
Purpose of the Study:
- To review the current understanding of regulatory mechanisms governing telomerase complex subunits.
- To explore the potential therapeutic applications of modulating these regulatory mechanisms in cancer treatment.
Main Methods:
- Comprehensive literature review of studies on telomerase regulation.
- Analysis of known regulatory pathways affecting telomerase subunit assembly, activity, and localization.
- Hypothesizing novel therapeutic strategies based on subunit regulation.
Main Results:
- Telomerase activity can be modulated through various mechanisms beyond direct inhibition of its expression or enzymatic function.
- Specific regulatory pathways of telomerase subunits offer distinct targets for therapeutic intervention.
- Understanding subunit regulation provides a broader scope for developing anti-cancer strategies.
Conclusions:
- Targeting telomerase subunit regulation presents a promising avenue for cancer therapy, offering alternatives to direct telomerase inhibition.
- Further research into these regulatory mechanisms could lead to the development of novel senolytic and apoptotic cancer treatments.
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