DNA damage may leave lasting changes in glioblastoma cells
Original title: Persistent chromatin alterations and gene expression reprogramming follow widespread DNA damage in glioblastoma.
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 lab dish.
The short version
In lab tests, damaged 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 cells stayed changed for weeks afterward.
What was studied. Researchers used human 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 cells grown in a lab. They cut the DNA in many spots at once, then watched the cells over time.
What they found. Changes in the cells were still there two weeks after the damage. The way the DNA folded and packed itself shifted, and the shift lasted. Genes turned on and off in new ways, and large stretches of DNA changed place.
What this means, and what it doesn't
What it could mean: Chemotherapy and radiation work in part by damaging tumor DNA. This lab work suggests that damage may also leave lasting changes in how tumor cells act. Those changes might be one reason some cells stop responding to treatment. Researchers want to understand this better.
What it doesn't mean: This does not change your care today. The work was done on cells in a dish, not in people. It does not mean chemotherapy or radiation is bad for you, and no one should stop treatment because of it. This is early lab science, not a new treatment and not a cure.
Source: PubMed, August 29, 2026 · Read the original
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