Regenerative MedicineHow Mitochondrial Breakdown Drives Spinal Disc Aging and What Can Stop It
Intervertebral disc degeneration (IVDD) is a leading cause of chronic back pain worldwide, and a new review pinpoints mitochondrial dysfunction as the central driver. The endplate chondrocytes that maintain spinal discs live in a harsh environment — low oxygen, sparse nutrients, and constant mechanical stress — making them uniquely dependent on healthy mitochondria. When mitochondrial quality control breaks down, these cells shift from efficient energy production to glycolysis, generate excess reactive oxygen species, trigger inflammatory pathways, and enter a damaging senescent state. The review evaluates emerging interventions including targeted antioxidants, NAD+ precursors, and even mitochondrial transplantation, as well as novel nanocarrier and gene-editing delivery strategies to reach this notoriously avascular tissue. This framework opens a path toward precision therapies for one of aging's most common and debilitating musculoskeletal conditions.
