Autophagy as a Quality Control System in Aging: From Housekeeping to Systemic Collapse

Edisnap· Feb 24, 2026

This infographic contrasts a healthy cell with active autophagy, efficiently recycling damaged components, against an aged cell where declining autophagy leads to cellular clutter and dysfunction. It then illustrates how therapeutic activation of autophagy can restore quality control and mitigate aging phenotypes.

Cells constantly produce damaged proteins and organelles. Autophagy—the lysosomal degradation pathway—serves as the primary quality control system, recycling damaged components into basic building blocks.

With age, autophagy declines. This isn't merely reduced housekeeping; it's a progressive loss of cellular quality control that permits damaged mitochondria, protein aggregates, and dysfunctional organelles to accumulate.

Hypothesis: The decline in autophagy is a primary driver of cellular aging, not merely a downstream consequence. Restoring autophagic flux—through pharmacological or metabolic interventions—should delay multiple aging phenotypes simultaneously by reinstating quality control.