Sound waves help send drugs through the nose to brain tumors in mice
Original title: Low-intensity pulsed ultrasound-mediated nose-to-brain co-delivery of β-blockers and aPD-L1 enhances glioblastoma immunotherapy.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was done in animals, not people. Most findings at this stage never become treatments.
This was only done in mice, not in people.
The short version
In mice, gentle sound waves helped two drugs reach a brain tumor through the nose.
What was studied. Researchers tested a new way to get drugs into the brain in mice with glioblastoma: A glioma that is given grade 4, the highest grade. It grows fast. Treatment usually starts soon after it is found. It often means surgery, then radiation and chemotherapy. See the glossary. They used gentle sound waves on the nose, then gave two drugs packed inside tiny carriers made from immune cells.
What they found. The sound waves opened the lining of the nose for about two hours. In that window, 33.38 times more of the immune drug reached the tumor area than when the drug was given by itself. The tumors got 40% smaller, and the mice lived longer.
What this means, and what it doesn't
What it could mean: This may point to a new way to move drugs past the barriers that keep them out of the brain. If it holds up, it could help doctors deliver brain tumor drugs in the future. Right now it is a very early step.
What it doesn't mean: This is not a new treatment you can ask for. The work was done only in mice, not in people. No one has tested it in humans for safety or benefit. It is not a cure. Results in mice often do not repeat in people, and this is many years away from everyday care, if it gets there at all.
Source: PubMed, July 30, 2026 · Read the original
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