Lipid Peroxidation Adds Fuel to Pyr(optosis)

Glutathione peroxidase 4 (GPX4) is an antioxidant enzyme that protects cells from lipid peroxidation. In this issue of Cell Host & Microbe, Kang et al. (2018) report that GPX4 is a negative regulator of the pyroptotic cell death pathway and plays an important role in inhibiting lethal inflammation associated with sepsis.