Researchers develop nanoparticles designed to cross the blood-brain barrier
Scientists are engineering particle-based delivery systems intended to ferry large molecules such as proteins and messenger RNA past the blood-brain barrier, a membrane that normally blocks such compounds from reaching brain tissue. Small chemicals like paracetamol already pass through naturally, but bigger therapeutic molecules cannot, limiting treatment options for brain disorders.
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The blood-brain barrier exists to protect the brain from toxins and pathogens, but that same protection prevents many promising drugs, including gene and RNA therapies, from reaching neurological tissue. A reliable way to breach it safely could open treatment paths for conditions like Alzheimer's, brain tumors, and other central nervous system diseases that currently have few effective options.
- The blood-brain barrier blocks large molecules like proteins and mRNA from reaching the brain.
- New particle-based delivery methods aim to safely transport bigger therapeutic molecules across this barrier.
- Success could unlock treatments for previously hard-to-treat brain diseases.
Source: nature.com — Makin, 2026-09-09
Published there as: “Drug-delivering particles aim to breach the blood–brain barrier”
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