Thiol-disulfide redox switches in protein kinases and their role in cardiovascular health and disease

Oxidants—molecules often linked to cell damage—are also essential signals that help the heart and blood vessels adapt to stress, and researchers have just discovered new proteins that sense these signals. This matters because cardiovascular disease remains the world’s leading cause of death, including in the UK. Current treatments focus on blocking oxidant damage, but that approach can also interfere with the beneficial signalling roles of these molecules. The team has identified specific “redox sensor” proteins that change shape when oxidants modify them, acting as molecular switches. Until now, these sensors were unknown, leaving a gap in understanding how the cardiovascular system tunes its responses to exercise, injury, or disease. If this fundamental science succeeds, it will reveal exactly which proteins and which structural changes control key processes like blood vessel dilation or heart muscle adaptation. That knowledge could eventually guide drug development toward more precise therapies—ones that preserve healthy oxidant signalling while preventing harmful damage. Because the work is curiosity-driven, immediate applications are not guaranteed, but similar discoveries about protein switches have previously opened entirely new classes of drugs, such as those targeting kinase-driven cancers.