Brain HealthBrain Aging Culprit Found — Blocking CypD Preserves Memory and Fights Tau
Researchers discovered that a mitochondrial protein, Cyclophilin D (CypD), plays a central role in brain aging by opening a damaging pore in mitochondria called the mPTP. In aged mice engineered to lack CypD, memory performance was significantly better, mitochondria produced more energy, and synaptic proteins were better preserved compared to normal aged mice. Crucially, toxic forms of tau protein — known drivers of neurodegeneration — were far less abundant in the brain tissue of CypD-deficient animals. The findings position CypD as a key upstream trigger linking mitochondrial failure, synaptic deterioration, and tau pathology in the aging brain, making it a promising target for future interventions.
