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Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
Published on: May 22, 2013
Elimination of Senescent Cells: Prospects According to the Subtelomere-Telomere Theory
G Libertini1, N Ferrara2, G Rengo2
1Federico II University, Department of Translational Medical Sciences, Naples, 80138, Italy. giacinto.libertini@yahoo.com.
Abstract:
Cell senescence is an artificially reversible condition activated by various factors and characterized by replicative senescence and typical general alteration of cell functions, including extra-cellular secretion. The number of senescent cells increases with age and contributes strongly to the manifestations of aging. For these reasons, research is under way to obtain "senolytic" compounds, defined as drugs that eliminate senescent cells and therefore reduce aging-associated decay, as already shown in some experiments on animal models. This objective is analyzed in the context of the programmed aging paradigm, as described by the mechanisms of the subtelomere-telomere theory. In this regard, positive effects of the elimination of senescent cells and limits of this method are discussed. For comparison, positive effects and limits of telomerase activation are also analyzed, as well of the combined action of the two methods and the possible association of opportune gene modifications. Ethical issues associated with the use of these methods are outlined.
Insights
Senolytic compounds eliminate aging cells to combat age-related decline, offering potential benefits but also presenting limitations. Research explores telomerase activation and gene modification alongside senolytics for anti-aging strategies.
Area of Science:
- Gerontology
- Cell Biology
- Molecular Biology
Background:
- Cell senescence is a reversible state linked to aging, characterized by altered cell function and increased senescent cell accumulation with age.
- Senescent cells contribute significantly to age-related decline and diseases.
- The subtelomere-telomere theory provides a framework for understanding programmed aging.
Purpose of the Study:
- To analyze the potential of senolytic compounds in eliminating senescent cells and reducing aging.
- To evaluate the efficacy and limitations of senolytic therapy.
- To compare senolytic therapy with telomerase activation and gene modification strategies.
Main Methods:
- Review and analysis of existing research on cell senescence and aging.
- Examination of senolytic compounds and their effects in animal models.
- Comparative analysis of telomerase activation and gene modification approaches.
Main Results:
- Senolytic compounds show promise in reducing aging-associated decay in experimental models.
- Both senolytic elimination and telomerase activation have demonstrated positive effects but also possess inherent limitations.
- Combined strategies and gene modifications may offer synergistic benefits.
Conclusions:
- Eliminating senescent cells via senolytics is a promising avenue for anti-aging interventions.
- Further research is needed to optimize senolytic therapies and explore combined approaches.
- Ethical considerations are paramount in the development and application of these anti-aging strategies.
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