A protein called ERP44 may help low-grade brain tumors resist a common drug
Original title: ERP44 Is Associated With Poor Prognosis and Promotes Proliferation and Temozolomide Resistance in Lower-grade Glioma.
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 done in cells in a dish and in mice, not in people.
The short version
Lab tests point to a protein that may make some brain tumor cells grow and shrug off chemotherapy.
What was studied. Researchers looked at gene data from large public tumor databases (TCGA, GTEx, and CGGA) to see how much ERP44 was present in lower-grade glioma: A tumor that starts in the glial cells, the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4 describing how the tumor is expected to behave. See the glossary. They then lowered ERP44 in two glioma cell lines, SW1088 and SW1783, and in tumors grown in mice, with and without the drug temozolomide: A chemotherapy taken as a capsule, used for some brain tumors. Your team checks your blood counts while you are on it. See the glossary.
What they found. ERP44 levels were much higher in lower-grade glioma: A tumor that starts in the glial cells, the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4 describing how the tumor is expected to behave. See the glossary than in normal tissue. Higher levels went along with a higher tumor grade and shorter survival in the database groups. When the researchers lowered ERP44, the cells grew less and formed fewer colonies. Tumors in mice grew more slowly, and temozolomide: A chemotherapy taken as a capsule, used for some brain tumors. Your team checks your blood counts while you are on it. See the glossary worked better.
What this means, and what it doesn't
What it could mean: ERP44 might one day help doctors tell which lower-grade gliomas are likely to behave badly. It might also become a target for a future drug used alongside temozolomide: A chemotherapy taken as a capsule, used for some brain tumors. Your team checks your blood counts while you are on it. See the glossary. For now, this is information for scientists, not a change to anyone's care.
What it doesn't mean: This does not mean there is a new treatment. The work was done in stored patient data, in cells in a dish, and in mice. It was not a trial in people. No drug that blocks ERP44 exists for patients. This is not a cure, and it does not change the treatment your team offers today. Results in mice often do not hold up in people.
Source: PubMed, January 1, 2026 · Read the original
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