Scientists reverse Alzheimer’s in mice using nanoparticles

Researchers have reversed Alzheimer’s symptoms in mice using bioactive nanoparticles that restore blood-brain barrier function. The therapy rapidly cleared toxic amyloid-beta and improved behavior, highlighting vascular health as a promising new target for human Alzheimer’s treatments.

Hyderabad: In a stunning scientific breakthrough, an international research team has demonstrated a novel nanotechnology strategy that effectively reverses Alzheimer’s disease pathology in mice.

Instead of targeting neurons directly, the therapy focuses on repairing the brain’s critical defense system i.e. blood-brain barrier (BBB).

The BBB is the vascular gatekeeper responsible for clearing toxic waste, like the protein amyloid-beta (Aβ), from the brain. In individuals with Alzheimer’s, this clearance system clogs up.

Researchers from IBEC (Institute of Bioengineering of Catalonia) and WCHSU, China, developed a unique ‘supramolecular drugs’, nanoparticles that are bioactive in their own right, not just drug carriers. The researchers in their study said that these nanoparticles act as a switch, mimicking a key clearance protein (LRP1) to reset the barrier’s function.

The results were immediate and dramatic. Just one hour after injection, the mice showed a 50 to 60 percent reduction in Aβ in the brain. More strikingly, a mouse equivalent to a 90-year-old human, treated at an older age, showed a full recovery of healthy behavior after six months.

“The long-term effect comes from restoring the brain’s vasculature,” explained Giuseppe Battaglia, a leader of the study. “Once the vasculature is able to function again, it starts clearing Aβ… allowing the whole system to recover its balance.”

This innovative approach marks a major shift in Alzheimer’s research, highlighting the crucial role of vascular health and offering a promising new pathway toward effective human treatments.

For more details about the study: ibecbarclona.eu

Giuseppe Battaglia And Lorena Ruiz