Würzburg Study Finds Vitamin B2 Shields Cancer Cells, as Roseoflavin Triggers Ferroptosis
Updated
Updated · ScienceAlert · May 26
Würzburg Study Finds Vitamin B2 Shields Cancer Cells, as Roseoflavin Triggers Ferroptosis
2 articles · Updated · ScienceAlert · May 26
Nature Cell Biology research from the University of Würzburg found vitamin B2 helps cancer cells survive by blocking ferroptosis, a form of programmed cell death tied to membrane damage.
Thousands of genes were screened, and the team identified RFK as a key link: it processes riboflavin into forms that fuel FSP1, a protein that suppresses ferroptosis alongside GPX4.
Roseoflavin—a vitamin B2 mimic—pushed lab-grown cancer cells toward ferroptosis by being taken up in place of riboflavin without supporting the same FSP1 defense pathway.
The finding points to a way to weaken tumors without broadly depriving healthy cells of an essential vitamin, though the researchers said the work is still at an early stage.
Because ferroptosis is also implicated in stroke, neurodegeneration and ischemia-reperfusion injury, the B2-FSP1 pathway could shape research beyond cancer.
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Vitamin B2 Metabolism and FSP1: Unlocking New Therapeutic Pathways to Sensitize Cancer Cells to Ferroptosis
Overview
This report explores how cancer cells resist ferroptosis, a form of cell death caused by iron-dependent lipid peroxidation. Normally, ferroptosis acts as a tumor-suppressive mechanism because cancer cells are highly sensitive to oxidative stress. However, proteins like FSP1 help cancer cells survive by regenerating antioxidants such as ubiquinone and vitamin K, which neutralize oxidative stress and prevent ferroptosis. Understanding this process is crucial for developing new cancer treatments, as targeting the FSP1 pathway could make cancer cells more vulnerable to cell death and improve therapeutic outcomes.