• Researchers identified Aplp1, a cell surface protein, as a key player in the spread of alpha-synuclein, a protein implicated in Parkinson's disease.
• An FDA-approved cancer drug targeting Lag3, which interacts with Aplp1, effectively blocked the spread of alpha-synuclein clumps in mouse models.
• The anti-Lag3 antibody demonstrated superior efficacy compared to Lag3 depletion, preventing further spread of alpha-synuclein seeds.
• These findings suggest that targeting the Aplp1-Lag3 interaction could significantly slow the progression of Parkinson's and other neurodegenerative diseases.