Journal article

Caveolae respond to acute oxidative stress through membrane lipid peroxidation, cytosolic release of CAVIN1, and downstream regulation of NRF2

Yeping Wu, Ye-Wheen Lim, David Stroud, Nick Martel, Thomas Hall, Harriet Lo, Charles Ferguson, Michael Ryan, Kerrie-Ann McMahon, Robert Parton

Wiley | Published : 2021

Abstract

Caveolae have been linked to many biological functions, but their precise roles are unclear. Using quantitative whole cell proteomics of genome-edited cells, we show that the oxidative stress response is the major pathway dysregulated in cells lacking the key caveola structural protein, CAVIN1. CAVIN1 deletion compromised sensitivity to oxidative stress in cultured cells and in animals. Wound-induced accumulation of reactive oxygen species and apoptosis were suppressed in Cavin1-null zebrafish, negatively affecting regeneration. Oxidative stress triggered lipid peroxidation (LPO) and induced caveolar disassembly. The resulting release of CAVIN1 from caveolae allowed direct interaction betwee..

View full abstract

University of Melbourne Researchers