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Leland H. Hartwell

Leland H. Hartwell is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Leland H. Hartwell rather than just read about it. In short: Leland Harrison "Lee" Hartwell (born October 30, 1939) is an American former president and director of the Fred Hutchinson Cancer Research Center in Seattle, Washington. He shared the 2001 Nobel Prize in Physiology or Medicine with Paul Nurse and Tim Hunt, for their discoveries of protein molecules that control the division (duplication) of cells.

Key takeaways

  • Leland H. Hartwell belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Leland H. Hartwell to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Leland H. Hartwell from memory before moving on to harder problems.

Reference excerpt

Leland Harrison "Lee" Hartwell (born October 30, 1939) is an American former president and director of the Fred Hutchinson Cancer Research Center in Seattle, Washington. He shared the 2001 Nobel Prize in Physiology or Medicine with Paul Nurse and Tim Hunt, for their discoveries of protein molecules that control the division (duplication) of cells. Working in yeast, Hartwell identified the fundamental role of checkpoints in cell cycle control, and CDC genes such as CDC28, which controls the start of the cycle—the progression through G1.

Education Hartwell attended Glendale High School in Glendale, California, and then received his Bachelor of Science from the California Institute of Technology in 1961. In 1964, he received his PhD in biology from the Massachusetts Institute of Technology. From 1965 to 1968, he worked at the University of California, Irvine as a professor. He moved to the University of Washington in 1968. In a series of experiments from 1970 to 1971, Hartwell discovered the cell division cycle (CDC) genes in baker's yeast (Saccharomyces cerevisiae). These genes regulate the cell cycle and mutations in the genes are involved in some types of cancer.

Awards and honors In addition to the Nobel Prize, Hartwell has received awards and honors including the Louisa Gross Horwitz Prize from Columbia University in 1995. He became a member of the National Academy of Sciences in 1987. In 1996, Hartwell joined the faculty of Fred Hutchinson Cancer Research Center and in 1997 became its president and director until he retired in 2010. In 1998 he received the Albert Lasker Award for Basic Medical Research, and the Massry Prize from the Keck School of Medicine, University of Southern California in 2000. On July 9, 2003, Washington Governor Gary Locke awarded the Medal of Merit, the state's highest honor, to Hartwell. He is also a recipient of the Komen Brinker Award for Scientific Distinction.

Research His earliest publications focused on the isolation of temperature sensitive yeast mutants disabled in basic biological processes, including DNA, RNA and protein synthesis. This led to the identification of the CDC (Cell Division Cycle) genes, which function in promoting the progression through cell division, most notably CDC28, which encodes the yeast Cdk kinase. Other significant discoveries include introduction of the concept of cell cycle "checkpoints", which delay cell division when cellular insults are generated and also the identification and characterization of the mating signal transduction pathway.

Other positions Hartwell is the Chairman of the Scientific Advisory Board at the Canary Foundation, a non-profit organization dedicated to developing new technologies for the early detection of cancer. He is also a founding co-chair of the Pacific Health Summit, and a member of its executive committee. In September 2009, it was announced that Hartwell would join the faculty of Arizona State University as the Virginia G. Piper Chair of Personalized Medicine and co-director of the Biodesign Institute's Center for Sustainable Health with Dr. Michael Birt. He is also adjunct faculty at Amrita University in India and an appointed member at Chang Gung University and Hospital in Taiwan where he serves in an advisory role as Distinguished Faculty for disease biomarker research.

Lee Hartwell Award This award is given to scientists whose research in yeast has made the most impact in the broader areas of biology. Recipients of the award also give a lecture at the biennial Yeast Genetics Meeting.

2016 – Susan Gasser, Friedrich Miescher Institute for Biomedical Research 2014 – George Church, Harvard Medical School 2012 – Stan Fields, University of Washington, Seattle 2010 – Randy Schekman, University of California, Berkeley 2008 – Mitsuhiro Yanagida, Kyoto University 2006 – Kim Nasmyth, Oxford University 2004 – Susan Lindquist, Whitehead Institute 2002 – Leland Hartwell, Fred Hutchinson Cancer Research Center

References

External links Leland H. Hartwell on Nobelprize.org

Worked examples

Example 1 — a first encounter with Leland H. Hartwell

Start with the simplest possible case. Write down what Leland H. Hartwell claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Leland H. Hartwell before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Leland H. Hartwell ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Leland H. Hartwell

In research
Leland H. Hartwell appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Leland H. Hartwell in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Leland H. Hartwell is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1939 births, American Nobel laureates, American scientists, so understanding it makes those chapters shorter.
In everyday life
Look for Leland H. Hartwell outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Leland H. Hartwell in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Leland H. Hartwell means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Leland H. Hartwell out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Leland H. Hartwell in simple terms?

Leland Harrison "Lee" Hartwell (born October 30, 1939) is an American former president and director of the Fred Hutchinson Cancer Research Center in Seattle, Washington. He shared the 2001 Nobel Prize in Physiology or Medicine with Paul Nurse and Tim Hunt, for their discoveries of protein molecules…

Why does Leland H. Hartwell matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Leland H. Hartwell?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Leland H. Hartwell.

Tags

  • 1939 births
  • American Nobel laureates
  • American scientists
  • Arizona State University faculty
  • California Institute of Technology alumni
  • Fred Hutchinson Cancer Research Center people
  • Living people
  • MIT School of Science alumni
  • Massry Prize recipients
  • Members of the United States National Academy of Sciences
  • Nobel laureates in Physiology or Medicine
  • Recipients of the Albert Lasker Award for Basic Medical Research

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