Leland Hartwell
Nobel laureate: Nobel Prize in Physiology or Medicine (2001)
Biography
Leland Harrison "Lee" Hartwell was born on October 30, 1939, in Los Angeles, California. He attended Herbert Hoover High School and later Glendale High School before going on to higher education at the California Institute of Technology and the Massachusetts Institute of Technology. These institutions prepared him for a successful career in molecular biology and genetics research.
Hartwell focused his groundbreaking research on understanding how cells control division, primarily using yeast as a model organism. His major contribution was identifying checkpoints in cell cycle control and discovering CDC (Cell Division Cycle) genes, especially CDC28, which is crucial for the cell cycle's start point during the G1 phase. This work unveiled how cells make sure DNA replication and chromosome segregation are correct before division, offering important insights into cellular quality control.
During his career, Hartwell was president and director of the Fred Hutchinson Cancer Research Center in Seattle, Washington, where he led significant cancer research efforts. His leadership there helped improve understanding of how defects in cell cycles can lead to cancer. His discoveries have had major impacts on cancer research and treatment development.
In 2001, Hartwell received the Nobel Prize in Physiology or Medicine, which he shared with Paul Nurse and Tim Hunt for their discoveries about protein molecules that control cell division. This honor topped a career full of awards, including the Albert Lasker Award for Basic Medical Research in 1998, the Canada Gairdner International Award in 1992, and the Louisa Gross Horwitz Prize in 1995. His work fundamentally changed scientists' understanding of cell biology and laid the groundwork for modern cancer research and therapy.
Before Fame
Growing up in Los Angeles during the 1940s and 1950s, Hartwell witnessed a time of rapid scientific growth after World War II. This period brought significant investment in research and saw molecular biology become its own field. He studied during the Cold War when scientific research had plenty of government funding and was highly respected.
To become prominent in molecular biology during Hartwell's time, one usually needed thorough training at top institutions and the skill to spot key biological questions that new experimental techniques could tackle. The creation of genetic tools for studying simple organisms like yeast opened up new chances for researchers to explore complex cellular processes in detail.
Key Achievements
- Discovered cell cycle checkpoints that ensure proper DNA replication before cell division
- Identified CDC genes, particularly CDC28, that control the start of the cell division cycle
- Shared the 2001 Nobel Prize in Physiology or Medicine with Paul Nurse and Tim Hunt
- Served as president and director of the Fred Hutchinson Cancer Research Center
- Established the genetic foundation for understanding how cell cycle defects contribute to cancer
Did You Know?
- 01.Hartwell's research used baker's yeast (Saccharomyces cerevisiae) as a model organism because its cell cycle closely resembles that of human cells despite being much simpler to study
- 02.The CDC28 gene he discovered in yeast has a human equivalent called CDK1, which performs the same essential function in human cell division
- 03.He received the Alfred P. Sloan, Jr. Prize in 1991, an award specifically recognizing outstanding contributions to cancer research
- 04.Hartwell was honored with the Komen Brinker Award for Scientific Distinction in 1998, linking his basic research discoveries to breast cancer research
- 05.His cell cycle checkpoint discoveries helped explain why cancer cells often have defective DNA repair mechanisms
Awards & Honors
| Award | Year | Details |
|---|---|---|
| Nobel Prize in Physiology or Medicine | 2001 | for their discoveries of key regulators of the cell cycle |
| Albert Lasker Award for Basic Medical Research | 1998 | — |
| Canada Gairdner International Award | 1992 | — |
| Louisa Gross Horwitz Prize | 1995 | — |
| Alfred P. Sloan, Jr. Prize | 1991 | — |
| Massry Prize | 2000 | — |
| Rosenstiel Award | 1992 | — |
| Leopold Griffuel Prize | 2000 | — |
| Genetics Society of America Medal | 1994 | — |
| Komen Brinker Award for Scientific Distinction | 1998 | — |
| Keith R. Porter Lecture | 1995 | — |
| Dickson Prize in Science | 1996 | — |
| Mendel Medal | 2001 | — |