Lipid droplets promote aberrant liquid-liquid phase separation of alpha-synuclein impairing energy homeostasis.

Lipid droplets induce aberrant alpha-synuclein phase separation, disrupting mitochondrial function and energy balance in Parkinson's disease models.

• Why it matters: Understanding early cellular events that lead to alpha-synuclein aggregation is crucial for developing interventions for Parkinson's disease, as these processes contribute to neurodegeneration.
• What they did: The study used microscopy and biochemical analyses to show that lipid droplets promote alpha-synuclein phase separation into condensates, sequestering lipid droplets and impairing their turnover, affecting mitochondrial health.
• The result: Findings suggest lipid droplet-rich condensates drive mitochondrial dysfunction and energy deficits, highlighting a potential mechanism underlying selective neuronal vulnerability in Parkinson's disease.