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Towards Healthy Longevity: Comprehensive Insights from Molecular Targets and Biomarkers to Biological Clocks
Khalishah Yusri1,2, Sanjay Kumar1,2, Sheng Fong3,4
1Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore.
Abstract:
Aging is a complex and time-dependent decline in physiological function that affects most organisms, leading to increased risk of age-related diseases. Investigating the molecular underpinnings of aging is crucial to identify geroprotectors, precisely quantify biological age, and propose healthy longevity approaches. This review explores pathways that are currently being investigated as intervention targets and aging biomarkers spanning molecular, cellular, and systemic dimensions. Interventions that target these hallmarks may ameliorate the aging process, with some progressing to clinical trials. Biomarkers of these hallmarks are used to estimate biological aging and risk of aging-associated disease. Utilizing aging biomarkers, biological aging clocks can be constructed that predict a state of abnormal aging, age-related diseases, and increased mortality. Biological age estimation can therefore provide the basis for a fine-grained risk stratification by predicting all-cause mortality well ahead of the onset of specific diseases, thus offering a window for intervention. Yet, despite technological advancements, challenges persist due to individual variability and the dynamic nature of these biomarkers. Addressing this requires longitudinal studies for robust biomarker identification. Overall, utilizing the hallmarks of aging to discover new drug targets and develop new biomarkers opens new frontiers in medicine. Prospects involve multi-omics integration, machine learning, and personalized approaches for targeted interventions, promising a healthier aging population.
Insights
Understanding aging involves studying molecular pathways and biomarkers. Targeting these hallmarks may lead to interventions and personalized approaches for healthier longevity.
Area of Science:
- Gerontology and Molecular Biology
- Biomedical Sciences
Background:
- Aging is a complex, time-dependent decline in physiological function, increasing age-related disease risk.
- Investigating aging's molecular basis is key for geroprotectors, biological age quantification, and healthy longevity strategies.
Purpose of the Study:
- To review intervention targets and biomarkers of aging across molecular, cellular, and systemic levels.
- To explore the development and application of biological aging clocks for risk stratification and intervention.
Main Methods:
- Review of current research on hallmarks of aging as intervention targets and biomarkers.
- Analysis of the construction and predictive capabilities of biological aging clocks.
- Discussion of challenges and future directions, including multi-omics and machine learning.
Main Results:
- Interventions targeting aging hallmarks show promise, with some in clinical trials.
- Aging biomarkers enable biological age estimation and risk stratification for all-cause mortality.
- Biological aging clocks can predict abnormal aging, disease risk, and mortality.
Conclusions:
- Targeting hallmarks of aging offers new drug discovery and biomarker development avenues.
- Biological age estimation provides a basis for personalized risk stratification and timely interventions.
- Future prospects include multi-omics, machine learning, and personalized medicine for healthier aging.
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