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| Scientist: George Herbert Hitchings |
American pharmacologist (1905–1998)
Hitchings, the son of a naval architect, was born in Hoquiam, Washington, and educated at the University of Washington and at Harvard where he obtained his PhD in 1933 and where he taught until 1939. He then moved briefly to the Western Reserve University until in 1942 he joined the Wellcome Research Laboratories where he spent the rest of his career, serving as vice president in charge of research from 1966 until his retirement in 1975.
Hitchings was one of the most productive of modern chemical pharmacologists. He began in 1942 with the study of purines and pyrimidines on the grounds that, as important ingredients in cell metabolism, their manipulation could lead to the control of important diseases at the cellular level. This insight led to the synthesis in 1951 of the purine analog, 6-mercaptopurine (6MP), which, as it inhibited DNA synthesis and thus cellular proliferation, proved valuable in the treatment of cancer, particularly leukemia.
In 1959 6MP was found to inhibit the ability of rabbits to produce antibodies against foreign proteins. A less toxic form, azathioprine or Imuran, was quickly developed by Hitchings and used in 1960 by the surgeon Roy Calne to control rejection of transplanted kidneys.
One further drug was developed from work on 6MP when it was realized that it was broken down in the body by the enzyme xanthine oxydase, the same enzyme that converts purines into uric acid. As gout is caused by an excess of uric acid Hitchings developed allopurinol, which blocks uric acid production by competing for xanthine oxydase.
Other drugs developed by Hitchings include the malarial prophylactic pyrimethamine, or Daraprim, and the antibacterial, trimethoprim. He was awarded the 1988 Nobel Prize for physiology or medicine for his work.
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| George Herbert Hitchings | |
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George Herbert Hitchings
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| Born | April 18, 1905 Hoquiam, Washington |
| Died | February 27, 1998 |
| Nationality | American |
| Known for | chemotherapy |
| Notable awards | 1988 Nobel Prize in Physiology or Medicine |
George Herbert Hitchings (April 18, 1905 – February 27, 1998) was an American doctor who shared the 1988 Nobel Prize in Physiology or Medicine with Sir James Black and Gertrude Elion "for their discoveries of important principles for drug treatment," Hitchings specifically for his work on chemotherapy.
Hitchings was born in Hoquiam, Washington, in 1905, and grew up there, in Berkeley, California, San Diego, Bellingham, Washington, and Seattle. He graduated from Seattle's Franklin High School, where he was salutatorian, in 1923, and from there went to the University of Washington, from which he graduated with a degree in chemistry cum laude in 1927, after having been elected to Phi Beta Kappa as a junior the year before. That summer, he worked at the university's Puget Sound Biological Station at Friday Harbor on San Juan Island [1], and received a master's degree the next year for his thesis based on that work.
From the University of Washington, Hitchings went to Harvard University as a teaching fellow, ending up at Harvard Medical School. Before getting his Ph.D. in 1933, he joined Alpha Chi Sigma in 1929. During the next ten years, he would work at Harvard and Western Reserve University. In 1942, he went to work for Wellcome Research Laboratories, where he began working with Gertrude Elion in 1944. Drugs Hitchings' team worked on included 2,6-diaminopurine (a compound to treat leukemia) and p-chlorophenoxy-2,4-diaminopyrimidine (a folic acid antagonist). According to his Nobel Prize autobiography,
In 1967 Hitchings became Vice President in Charge of Research of Burroughs-Wellcome. He became Scientist Emeritus in 1976. He died in 1998 in Chapel Hill, North Carolina.
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