A Scar-Like Protein May Help Brain Tumors Hide From the Immune System
Original title: Radiation-Induced Collagen I&III Accumulation Drives Immunosuppressive Evolution in Recurrent 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.
The treatment part was only tested in mice.
The short version
In mice, blocking a scar-like protein helped the immune system fight a brain tumor that came back.
What was studied. Researchers looked at 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, a brain tumor that often comes back after treatment. They used human tumor samples plus tumor cells and a drug tested in mice.
What they found. Tumors made more of two collagen proteins after radiation and when they grew back. People with higher levels of these collagens lived a shorter time. In mice, taking these collagens out of tumor cells, or giving a drug called buparlisib, changed the immune cells around the tumor and helped the mice live longer.
What this means, and what it doesn't
What it could mean: This points to one reason immune drugs often fail in brain tumors that come back. It could guide new drug pairings to test in people later. It does not change any care a doctor can give now.
What it doesn't mean: This is early lab and animal work. It is not a cure, and it is not proof the drug helps people. Mice are not people, and human tumors may act in other ways. No one can ask for this treatment today. Years of testing in people would need to come first.
Source: bioRxiv (preprint), October 20, 2026 · Read the original
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