Sono-Nano Scavengers: A Theoretical Framework for Ultrasound-Triggered Nanoparticle Delivery to Clear Amyloid-Beta in Alzheimer's Disease

Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by amyloid-beta plaque accumulation and neuronal loss. A major challenge in treating AD is the blood-brain barrier (BBB), which blocks 98% of therapeutic drugs. This paper proposes "Sono-Nano Scavengers", a novel non-invasive therapeutic framework combining two technologies: 1) Focused Ultrasound (FUS) with microbubbles to temporarily and safely open the BBB, and 2) Poly(lactic-co-glycolic acid) (PLGA) nanoparticles loaded with anti-amyloid-beta antibodies and Nerve Growth Factor (NGF). The FUS creates a temporary window for the nanoparticles to enter the brain and target amyloid plaques. Once delivered, the antibodies bind and help clear the plaques, while NGF promotes neuronal survival and synaptic repair. This dual approach addresses both the clearance of toxic proteins and neural regeneration. This work provides a theoretical foundation for a combined nanotechnology and neuromodulation therapy for AD. Future steps include in-vitro and in-vivo validation.