Edward Adelbert Doisy

Edward Adelbert Doisy: Twice a Discoverer, Once a Laureate

Twice in his career Edward Doisy extracted a biologically decisive molecule from a mess of raw material and pinned down what it was. The first time, in 1930, he isolated estrone, and watched a German rival take the Nobel Prize for the same achievement. The second time, working on the vitamin that lets blood clot, the prize was his.

From Hume, Illinois

Doisy was born on 13 November 1893 in Hume, Illinois, a small town in the eastern part of the state. He took his AB at the University of Illinois at Urbana-Champaign in 1914 and a master's degree there in 1916, then went east to Harvard, where he earned his PhD in 1920.

St. Louis

In 1919 he joined the Department of Biochemistry at Washington University School of Medicine in St. Louis. Four years later, in 1923, Saint Louis University recruited him to build a biochemistry department from nothing, appointing him professor and chairman of the new department. He stayed for four decades, retiring in 1965. In 1940 he also served as a lecturer in medicine at the University of Chicago School of Medicine.

The stability matters. Doisy's two great results came from the same laboratory in the same city, separated by roughly a decade — the product of an institution built and then patiently used.

Estrone

In 1930 Doisy isolated estrone. Sex hormones at that point were inferred rather than seen: their effects were measurable, their chemistry was not. Getting estrone out in pure form meant the hormone could be identified, characterised and eventually made, which is the precondition for every therapeutic and diagnostic use that followed.

He was not alone in the race. Adolf Butenandt in Germany reached the same result independently, and it was Butenandt who received the 1939 Nobel Prize in Chemistry for the sex hormone work. Doisy, who had done it independently and in parallel, got nothing for it. Scientific priority disputes usually turn on weeks; this one simply left one of the two discoverers uncredited.

Vitamin K

His second target was the substance the Danish biochemist Henrik Dam had identified as necessary for blood coagulation. Dam had named it after the German *Koagulations-Vitamin* — hence the letter K. What Dam had not done was determine its chemical structure.

Doisy did. Working in collaboration with Dam, he established the structure of vitamin K, converting a functional observation about clotting into a defined molecule. That is the step that turns a nutritional curiosity into a usable compound: once you know the structure you can synthesise it, dose it and give it to patients who bleed.

Recognition

In 1943 Doisy shared the Nobel Prize in Physiology or Medicine with Henrik Dam — Dam for the discovery of vitamin K, Doisy for its chemical nature. The scientific establishment had already claimed him: the National Academy of Sciences elected him in 1938, the American Philosophical Society in 1942, and the American Academy of Arts and Sciences in 1948.

Legacy

Doisy died on 23 October 1986, aged ninety-two. Saint Louis University, the institution whose biochemistry department he had created, renamed that department for him. After his death his family endowed the Edward A. and Margaret Doisy College of Health Sciences, and in 2007 funded the Edward A. Doisy Research Center with a gift of $30 million.

Why Doisy Matters

Doisy belonged to the generation of biochemists who took physiology's black boxes apart. A hormone that regulates reproduction and a vitamin that governs clotting were both, before him, effects in search of a substance. He supplied the substance, in pure and structurally defined form, and in doing so put endocrinology and nutritional biochemistry on chemical foundations.

His career also stands as a reminder of how arbitrary recognition can be. He discovered estrone independently and received no prize for it; he characterised vitamin K and received the highest one there is. The work was of a piece — the same hands, the same laboratory, the same method of grinding through biological material until something pure came out the other end.