Molecular Hallmarks of Aging: Integrated Profiling Reveals Epigenetic Erosion and Proteostatic Collapse
Keywords:
Aging, DNA Methylation, Epigenetic Drift, Histone Acetylation, Ubiquitin-Proteasome System, Proteostasis, Post-Translational Modifications, Biomarkers, Cellular Senescence, Molecular Hallmarks of AgingAbstract
Aging is a multifaceted biological process shaped by genetic, epigenetic, and environmental influences. Recent advances in high-throughput technologies have enabled unprecedented exploration of posttranslational modifications (PTMs) and epigenetic remodeling, both of which are central regulators of cellular function during aging. Mass spectrometry-based proteomics, single-cell multi-omics, and spatial epigenetic profiling now allow investigators to track molecular changes at a resolution previously unattainable. Simultaneously, bioinformatics and machine learning approaches facilitate integration of these molecular datasets with clinical phenotypes, revealing predictive biomarkers of age-related disease and therapeutic response. This article synthesizes recent progress in the study of PTMs and epigenetics in aging, highlights novel technological platforms, and discusses the role of computational biology in translating molecular insights into precision medicine for aging populations
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