Scientists Win 2026 Nobel for Breakthroughs in Optogenetics

The 2026 Nobel Prize in Physiology or Medicine was awarded to Karl Deisseroth of the Howard Hughes Medical Institute and Stanford University, Peter Hegemann of Humboldt University of Berlin, and Georg Nagel of the University of Würzburg for their contributions to optogenetics. The Nobel Assembly at Karolinska Institutet announced the award on October 5, 2026, recognizing their discoveries related to light-gated ion channels.

Hegemann and Nagel's research began in the early 2000s when they investigated how the microscopic alga Chlamydomonas navigates towards light, leading to the identification of the protein channelrhodopsin. Deisseroth expanded on this by inserting the channelrhodopsin gene into rat nerve cells, enabling light-triggered nerve signals.

His findings were published in 2005, and by 2007, he demonstrated this technique in living mice brains. Optogenetics has since revolutionized neuroscience, allowing precise control over nerve cells and aiding in understanding neural circuits related to memories and emotions.