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A Unified Model of Age-Related Cardiovascular Disease
Michael Fossel1, Joe Bean2, Nina Khera3
1Telocyte, Grand Rapids, MI 49503, USA.
Insights
Cell aging drives cardiovascular disease by causing tissue changes. Restoring telomerase activity offers a promising therapeutic strategy to combat age-related heart conditions.
Area of Science:
- Cardiovascular Medicine
- Gerontology
- Cellular Biology
Background:
- Cardiovascular disease is a leading cause of death, with aging as a key, yet often overlooked, contributing factor.
- Current interventions inadequately address the role of aging in disease pathogenesis, leading to suboptimal outcomes.
- Cellular aging and senescence are fundamental processes implicated in age-associated cardiovascular pathologies.
Purpose of the Study:
- To propose a unified model explaining the role of cell aging in cardiovascular disease.
- To elucidate the mechanisms linking upstream risk factors to downstream clinical outcomes in age-related cardiovascular conditions.
- To identify potential therapeutic targets based on the proposed aging model.
Main Methods:
- Development of a unifying model for age-associated cardiovascular pathologies.
- Analysis of the impact of telomerase inactivation and telomere attrition on cardiovascular cells.
- Review of potential therapeutic interventions, including gene therapy.
Main Results:
- Cellular senescence, driven by telomere attrition, underlies tissue changes in age-related cardiovascular disease.
- The model integrates upstream risk factors and downstream outcomes, explaining limited success of current interventions.
- Telomerase activity is identified as a key factor in preventing and reversing cell senescence.
Conclusions:
- Cell aging is a central mechanism in the pathogenesis of age-related cardiovascular diseases.
- Telomerase gene therapy presents a promising therapeutic avenue for cardiovascular medicine.
- A unified model of cell aging offers a transformative approach to treating cardiovascular disease.
Abstract:
Despite progress in biomedical technologies, cardiovascular disease remains the main cause of mortality. This is at least in part because current clinical interventions do not adequately take into account aging as a driver and are hence aimed at suboptimal targets. To achieve progress, consideration needs to be given to the role of cell aging in disease pathogenesis. We propose a model unifying the fundamental processes underlying most age-associated cardiovascular pathologies. According to this model, cell aging, leading to cell senescence, is responsible for tissue changes leading to age-related cardiovascular disease. This process, occurring due to telomerase inactivation and telomere attrition, affects all components of the cardiovascular system, including cardiomyocytes, vascular endothelial cells, smooth muscle cells, cardiac fibroblasts, and immune cells. The unified model offers insights into the relationship between upstream risk factors and downstream clinical outcomes and explains why interventions aimed at either of these components have limited success. Potential therapeutic approaches are considered based on this model. Because telomerase activity can prevent and reverse cell senescence, telomerase gene therapy is discussed as a promising intervention. Telomerase gene therapy and similar systems interventions based on the unified model are expected to be transformational in cardiovascular medicine.
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