Melatonin slowed glioblastoma cells in lab tests
Original title: Melatonin exerts an in vitro anti-glioblastoma effect through SIRT1-mediated HMGB1 deacetylation and inhibition of the TLR4/NF-κB pathway.
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 lab dish, not in people.
The short version
In a lab dish, melatonin made 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 grow less and die more.
What was studied. Researchers treated 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 in the lab with melatonin, a natural hormone. They watched how the cells lived, moved, and spread, and they looked at which proteins changed.
What they found. Melatonin lowered how well the cells stayed alive. It also cut down how much they moved and invaded, and more of them died. The team traced the effect to a protein called SIRT1. When they blocked SIRT1, the changes went the other way.
What this means, and what it doesn't
What it could mean: This points to one possible way melatonin might act against 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. It gives researchers a reason to keep studying it as a possible add-on treatment someday.
What it doesn't mean: This was done only in cells in a dish. No people and no animals were treated here. It does not show that melatonin helps a person with a brain tumor, and it is not a cure. Do not start or change any supplement on your own. Ask your own doctor first.
Source: PubMed, September 14, 2026 · Read the original
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