Age-related changes in protein glycosylation patterns across organs correlate with declining lysosomal enzyme function, suggesting that impaired cellular waste processing contributes to aging phenotypes. This connection between glycan metabolism and lysosomal capacity identifies a mechanistic link in how cells lose their ability to maintain homeostasis over time.
Key Points
- N-glycan alterations occur organ-wide with aging in mice
- Lysosomal glycosidase activity declines coordinately with glycan changes
- Impaired cellular waste processing may drive aging phenotypes
Longevity Analysis
Protein glycosylation serves as a marker of cellular age and metabolic stress. When the machinery responsible for breaking down and recycling modified proteins deteriorates—as this research demonstrates occurs systemically—cells accumulate damaged components that impair function across every organ. The practical implication is that restoring or supporting lysosomal capacity and glycan homeostasis may represent a targetable intervention point. Therapies that enhance cellular detoxification and regeneration could slow or reverse these age-related changes before they manifest as functional decline.
Original published by Nature - npj Aging, by Keiko Akasaka-Manya.