Glutathione peroxidase 4: a new player in neurodegeneration? Molecular Psychiatry Glutathione peroxidase 4: a new player in neurodegeneration? Molecular Psychiatry 5 6) By contrast, latency I Burkitt B cells were particularly vulnerable to ferroptosis induction by blockade of either cystine import, glutathione synthesis or glutathione peroxidase 4 (GPX4). Eric also found roles for The Selenoprotein Glutathione Peroxidase 4: From Molecular Mechanisms to Novel Therapeutic Opportunities[v1] Preprints.org