Overview
- Researchers tracked organelle exchange in co-cultures and in live mice, with 23% of sensory neurons containing glia-derived mitochondria by day 10.
- Transfer relied on tunneling nanotubes with the motor protein MYO10, while blocking endocytosis, gap junctions, or nanotube formation curtailed transfer and worsened nerve damage and pain.
- Enhancing this energy support or injecting isolated healthy mitochondria into dorsal root ganglia lowered pain behaviors in diabetic and chemotherapy models, with relief lasting up to 48 hours.
- Behavioral measures fell by as much as 50% when transfer was boosted, indicating a sizable but time-limited effect.
- Human tissue analyses showed reduced transfer in diabetic donors, healthy donor cells or mitochondria eased touch hypersensitivity in diabetic mice, and mitochondria from diabetic donors provided no benefit; the approach remains early-stage with delivery, durability, and imaging needs outstanding.