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Nanotechnology Breakthrough Reverses Alzheimer’s Disease in Mice

Researchers used bioactive supramolecular nanoparticles to restore blood-brain barrier function, reducing amyloid-beta by up to 60% and reversing Alzheimer's symptoms in mice.

  • The Institute for Bioengineering of Catalonia and West China Hospital of Sichuan University co-led a team that used bioactive nanoparticles called supramolecular drugs to reverse Alzheimer's pathology in mouse models.
  • LRP1 normally acts as a molecular gatekeeper, recognizing amyloid-β, but when its binding fails, Aβ accumulates in the brain, impairing neurons and driving Alzheimer's disease.
  • In experiments, genetically engineered mice producing high levels of beta-amyloid received just three doses and `Only 1h after the injection we observed a reduction of 50-60% in Aβ amount inside the brain`, with long-term tests showing full cognitive recovery.
  • Researchers say the supramolecular drug nanoparticles mimic LRP1 ligands to bind Aβ, cross the BBB, and activate a feedback mechanism restoring vascular clearance.
  • The study underscores the brain's vast vasculature—approximately one billion capillaries—and positions supramolecular drugs as a novel alternative to traditional nanomedicine for dementia therapy.
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Medical Xpress broke the news in on Tuesday, October 7, 2025.
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