A protein called PLOD3 may help brain tumors grow by changing the tissue around them
Original title: Microenvironment-Dependent Role of PLOD3 in Glioblastoma: Associations with Matrix Remodeling and Myeloid Immune Remodeling.
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.
The treatment part was only tested in cells and mice, not in people.
The short version
In lab and mouse tests, a protein named PLOD3 seemed to help glioblastoma: A glioma that is given grade 4. Grade 4 is the highest grade there is. The tumor grows fast. Treatment usually starts soon after it is found. It often means surgery, and then radiation and chemotherapy. See the glossary grow by changing the tumor's surroundings, not the tumor cells themselves.
What was studied. Researchers looked back at gene activity data from past studies and stained 70 glioma: A tumor that starts in the glial cells. Those are the support cells of the brain and spinal cord. Gliomas are given a grade from 1 to 4. The grade says how the tumor is expected to act. See the glossary tissue samples. They also lowered PLOD3 in mouse glioblastoma: A glioma that is given grade 4. Grade 4 is the highest grade there is. The tumor grows fast. Treatment usually starts soon after it is found. It often means surgery, and then radiation and chemotherapy. See the glossary cells and grew those cells in a dish and in mice.
What they found. PLOD3 was higher in glioblastoma: A glioma that is given grade 4. Grade 4 is the highest grade there is. The tumor grows fast. Treatment usually starts soon after it is found. It often means surgery, and then radiation and chemotherapy. See the glossary. Higher levels went with higher tumor grade, IDH1-wild-type tumors, and shorter survival. Higher PLOD3 also went with more immune cells called macrophages, and fewer signs of two immune cell types that attack tumors. Lowering PLOD3 did not change how fast cells grew in a dish, but it did shrink tumor growth in mice, with fewer macrophages and less collagen.
What this means, and what it doesn't
What it could mean: This points to PLOD3 as a possible target for future drugs. It also hints that PLOD3 may matter because of how it shapes the tissue and immune cells around a tumor. For now this is only a research lead, not something a doctor can act on.
What it doesn't mean: This does not mean there is a new treatment. The tests were done in old gene data, stored tissue samples, cells in a dish, and mice. No person was treated. No drug that blocks PLOD3 was tested in people. The researchers also say the exact way it works still needs more proof. This is early science, far from everyday care, and it is not a promise of a cure.
Source: PubMed, October 20, 2026 · Read the original
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