A copper drug aims to make temozolomide work again in glioblastoma
Original title: Reversing Temozolomide Resistance in Glioblastoma Based on Cuproptosis-Mediated Positive Feedback Loop.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was done in animals, not people. Most findings at this stage never become treatments.
This was only tested in cells in the lab and in animals, not in people.
The short version
Adding copper to the standard brain tumor chemo made it work again in tumors that had stopped responding, in lab and animal tests.
What was studied. Researchers built a new drug particle that joins copper with temozolomide, the standard first chemo drug for glioblastoma: The fastest-growing type of glioma (grade 4). Treatment usually starts soon after diagnosis: surgery first, then radiation and chemotherapy. See the glossary. Some versions also carried metformin. They tested it on glioblastoma cells in the lab and in living animals with tumors that no longer responded to temozolomide.
What they found. Inside the cells, the particle broke apart and released copper and temozolomide together. This set off a kind of cell death called cuproptosis, which fed on itself and drained the tumor cells of energy. The copper also made temozolomide stronger by making it harder for the cells to push the drug out and to repair their own DNA. In both the lab tests and the animal tests, the tumors started responding to temozolomide again and their growth slowed.
What this means, and what it doesn't
What it could mean: Drug resistance is a real problem for people 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, because temozolomide only helps some patients. This work points to one possible way to bring that drug back into play. It is an early idea being tested, not a treatment a doctor can offer.
What it doesn't mean: This does not mean a new treatment is coming soon. The work was done in cells and in animals, not in people. Nothing here shows the drug is safe or helpful for humans, and many treatments that work in animals do not work in people. This is not a cure, and it is not something to ask for at your next appointment.
Source: PubMed, July 20, 2026 · Read the original
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