Charles S. Zuker
Wolf Prize Laureate in Medicine 2026
Charles S. Zuker
Affiliation at the time of the award:
Columbia University, Howard Hughes Medical Institute (HHMI), USA
Award citation:
“For revolutionizing our understanding of taste, the last of our senses to be elucidated”.
Prize share:
None
Charles S. Zuker, Professor of Biochemistry and Molecular Biophysics and of Neuroscience at Columbia University – Principal Investigator at Columbia’s Zuckerman Institute, and Investigator at the Howard Hughes Medical Institute.
Dr. Zuker was born in 1957 in Arica, Chile, a remote city on the borders of Peru and Bolivia. From an early age, he was drawn to biology and medicine – not to become a physician, but to understand how living systems work. As an undergraduate, limited resources taught him an enduring scientific skill: improvising, even building his own laboratory equipment.
Determined to pursue research, Zuker left Chile for graduate studies at MIT, immersing himself in molecular biology. His scientific journey soon led him from questions of genes and development to the nervous system and the biology of sensory perception. At Berkeley, his work on photoreceptor function helped deepen his fascination with how the brain interprets the outside world.
That fascination ultimately led Zuker to taste. Through a remarkable series of discoveries, he revealed how tastes are detected, encoded, and represented in the brain, transforming a familiar everyday sensation into one of the best-understood sensory systems in modern neuroscience.
Charles Zuker has performed elegant behavioral, genetic, and neurobiological experiments that defined a functional logic for taste in mammals. His laboratory identified the cells and receptors that mediate each of the five basic taste modalities: sweet, sour, bitter, salty, and umami -and demonstrated that each taste is encoded by its own receptor expressed in distinct classes of taste-receptor cells, each mediating one taste quality. His work elucidated the fundamental logic of taste-coding in the periphery.
Zuker then progressed to demonstrate that the basic tastes are represented in the brain by specifically tuned cells organized in a precise and spatially ordered gustotopic map, where each taste quality is encoded in its own segregated cortical field. In a characteristically direct and incisive approach, Zuker and colleagues generated transgenic mice that expressed bitter receptors in sweet cells and revealed that these mice now displayed strong attraction, rather than aversion, to the cognate bitter compounds. This elegant array of genetic manipulations revealed that taste perception is not a property of the receptor but a reflection of the selective activation of specific taste receptor-expressing cells innately wired to the brain to elicit appropriate behaviors. Zuker then generated mice that express human receptors in taste cells and demonstrated that these animals exhibit “humanized” taste preferences. These now-classical experiments demonstrated that differences in taste receptors define innate distinctions in taste preference, selectivity, and sensitivity.
