What changed
Karl Deisseroth, Peter Hegemann and Georg Nagel have won the 2026 Nobel Prize in Physiology or Medicine for foundational work on optogenetics. The prize, announced at Sweden’s Karolinska Institute on 5 October, recognizes research that uses light-sensitive proteins to switch individual nerve circuits on or off. They will share £900,000, or 12 million Swedish kronor.
Why it matters
Optogenetics gives researchers an unusually direct way to connect brain activity with feelings, memories and behaviour. Hegemann and Nagel’s discovery of channelrhodopsin, a protein borrowed from algae, made it possible to control nerve cells with light and observe what follows.
That has changed brain research from watching neural activity to manipulating specific circuits. Researchers have used the technique in animals to bring memories to life, create feelings and drive behaviours, while also studying neurons involved in neurological and psychiatric disorders. It has also clarified how the nervous system interacts with organs such as the heart and gut.
The most tangible medical test is now happening in vision. In ongoing trials, researchers are inserting a light-sensitive protein into damaged eyes of people blinded by retinitis pigmentosa. One reported approach combines that protein with special light-emitting glasses, allowing a patient to regain some sight.
That is an important step, but it is still a step. Whether optogenetic treatments secure regulatory approval and become routinely available remains uncertain.
Comments
No comments yet.