In lab dishes, drugs cleared out brain tumor cells left behind by radiation
Original title: p53 wild-type/low c-Myc-expressing ONS76 pediatric medulloblastoma cells become senescent after gamma-irradiation and can be eliminated by senolytic substances.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was done on cells in a lab, not in people. It is a very early step.
This was only done on cells in a dish in a lab.
The short version
This was an early lab study on tumor cells in a dish, not a study in people.
What was studied. Researchers used two lines of childhood medulloblastoma cells grown in the lab. They hit the cells with gamma radiation, then tried drugs made to kill off worn out cells.
What they found. One cell line, called ONS76, did not die after radiation. Instead the cells stopped dividing for good and just sat there. The other line, called UW228-3, died after the same radiation. Three drugs, Navitoclax, PX-866, and BAY80-6946, were able to kill the worn out ONS76 cells.
What this means, and what it doesn't
What it could mean: Radiation to the brain and spine is a key part of care for this tumor. It can also cause swelling and trouble with thinking and memory. Worn out cells left behind may be part of why. The researchers think clearing those cells might cut side effects, lower the chance the tumor comes back, and maybe allow less radiation. That is an idea this lab work points to, not something shown in patients.
What it doesn't mean: This does not mean a new treatment is ready. The work was done only on cells in a dish. It was not tested in animals or in people. No one knows yet if these drugs are safe or helpful for a child with this tumor. It is not a cure, and it does not change care today.
Source: PubMed, October 8, 2026 · Read the original
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