A protein may help brain tumor cells resist chemotherapy
Original title: Deciphering LonP1's Role in Glioblastoma: An Alternative Mechanism of Treatment Resistance.
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 in cells in a dish, not in animals or people.
The short version
In lab tests, a protein called LonP1 helped glioblastoma: The fastest-growing type of glioma (grade 4). Treatment usually starts soon after diagnosis: surgery first, then radiation and chemotherapy. See the glossary cells survive the standard chemo drug.
What was studied. Researchers worked with glioblastoma: The fastest-growing type of glioma (grade 4). Treatment usually starts soon after diagnosis: surgery first, then radiation and chemotherapy. See the glossary cells in the lab, not with people. They grew cells that had learned to resist the chemo drug temozolomide, then looked at a protein called LonP1.
What they found. The resistant cells made more LonP1 than ordinary tumor cells. When the team added extra LonP1 to glioma: A tumor that starts in the glial cells, the support cells of the brain and spinal cord. Gliomas are graded 1 to 4 by how fast they tend to grow. See the glossary cells, those cells became resistant to temozolomide. When they lowered LonP1, or blocked it with a drug, the cells became sensitive to temozolomide again. Fewer cells survived, and the parts of the cell that make energy were damaged. The researchers also say one of their check experiments only partly backed up the result.
What this means, and what it doesn't
What it could mean: It points to a possible new target. If this holds up, a drug that blocks LonP1 might one day be given alongside temozolomide to help the chemo keep working. For now it is a lead, not a treatment.
What it doesn't mean: This does not mean a new treatment exists. All of this was done in cells in a dish. It was not tested in animals, and it was not tested in people. The researchers say animal studies are still needed before anyone can say what this means for patients. There is nothing here to ask your doctor for, and this is not a cure.
Source: PubMed, July 21, 2026 · Read the original
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