Nanoparticle Therapy Reverses Alzheimer’s Progression in Mice
Sci.News · 2026-08-26
Researchers at the University of South Carolina have developed a nanoparticle-based therapy, called Nano-ERASER, which has shown promise in reversing Alzheimer’s disease progression in mice. This system works by converting star-shaped brain cells known as astrocytes into functioning neurons, addressing a core challenge in Alzheimer's where the adult brain struggles to replace lost neurons. Nano-ERASER uses antibodies to break down the PTBP1 protein within astrocytes, triggering their conversion into neurons without modifying DNA, making it potentially safer than gene-editing tools.
In experiments, the therapy improved memory and learning in mice, with treated animals showing recovered nesting skills and better performance in a water maze after just two injections. The treated mice also exhibited increased neuron density and reduced neuroinflammation and amyloid-beta protein buildup in their brains. The researchers first confirmed the conversion of astrocytes to functional neurons in human astrocyte cultures and organoids. While this study does not confirm efficacy in humans, it offers a roadmap for future development, with plans to evaluate long-term effectiveness, test in nonhuman primates, and eventually begin human clinical trials. The findings were published in the journal *Cell Biomaterials* on August 26, 2026.