A lab study looks at why brain tumor cells survive radiation
Original title: Collagen-dependent DDR1 ectodomain shedding regulates proliferative signaling in radiation-resistant glioblastoma
How far along is this research?
This is a preprint. Other scientists have not checked it yet, so treat it as an early signal rather than an answer.
This was done only with cells grown in the lab, not in people.
The short version
Scientists found a protein change in brain tumor cells that lived through radiation.
What was studied. Researchers used glioblastoma: A glioma that is given grade 4. Grade 4 is the highest grade there is. The tumor grows fast. Treatment usually starts soon after it is found. It often means surgery, and then radiation and chemotherapy. See the glossary cells grown from patient tumors. Some cells were sensitive to radiation. Others had been made resistant to it. The cells were grown in a soft gel made of collagen, a protein found around cells in the body.
What they found. The resistant cells had more of a protein called DDR1. But less of that protein was switched on. More of it was being cut and shed from the cell surface. Another protein, ADAMTS1, was much higher in the resistant cells. When the team lowered ADAMTS1, less DDR1 was cut and the cells' growth signals went up.
What this means, and what it doesn't
What it could mean: This is early science that may help explain how tumor cells change after radiation. Over time, findings like this can point to new drug targets. It does not change any treatment a patient gets today.
What it doesn't mean: This does not mean a new treatment is coming soon. The work was done on cells in a dish, not in people. No drug was tested, and nothing here was shown to help a person live longer. It is not a cure, and it is not a promise of one. Many lab findings never become treatments.
Source: bioRxiv (preprint), October 9, 2026 · Read the original
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