Mario Capecchi

Mario Capecchi is an Italian-born American molecular geneticist renowned for his pioneering work in gene targeting. His revolutionary technique for manipulating the mouse genome allowed for the creation of knockout mice, transforming the study of mammalian genetics and disease. For this achievement, he was jointly awarded the Nobel Prize in Physiology or Medicine in 2007 with Martin Evans and Oliver Smithies. His career has been primarily based at the University of Utah, where he is a distinguished professor.

Early life and education

Born in Verona, his early childhood was marked by extreme hardship during World War II after his mother, a poet and anti-fascist, was sent to the Dachau concentration camp. He spent years living on the streets and in orphanages before being reunited with his mother in 1946. They emigrated to the United States, joining his uncle in Pennsylvania. He earned a Bachelor of Science in chemistry and physics from Antioch College in 1961, where a work-study program provided crucial laboratory experience. He then pursued his PhD in biophysics at Harvard University under the mentorship of James D. Watson, co-discoverer of the structure of DNA, graduating in 1967.

Career and research

After completing his doctorate, Capecchi remained at Harvard University as a junior fellow in the Society of Fellows and later joined the faculty of the Harvard Medical School department of biochemistry. In 1973, he moved to the University of Utah in Salt Lake City, where he became a professor in the Department of Human Genetics. His early research focused on mechanisms of mammalian gene expression and the molecular genetics of retroviral infection. His laboratory's work laid the essential groundwork for the development of gene targeting, a method that allows scientists to modify specific genes within the chromosomes of living organisms with high precision.

Gene targeting technique

The gene targeting technique, often called "homologous recombination" in mammalian cells, was conceived by Capecchi in the late 1970s. It involves introducing engineered DNA sequences into embryonic stem cells to replace or disrupt a specific target gene. When these modified cells are used to create a living mouse, the result is a knockout mouse lacking the function of that gene. This breakthrough, perfected in collaboration with the work of Martin Evans and Oliver Smithies, provided an unprecedented tool for studying the function of any mouse gene, modeling human diseases like cancer, cystic fibrosis, and cardiovascular disease, and testing potential therapeutic interventions.

Awards and honors

Capecchi's contributions have been recognized with numerous prestigious awards. He received the Albert Lasker Award for Basic Medical Research in 2001, shared with Martin Evans and Oliver Smithies. That same year, he was awarded the National Medal of Science. The pinnacle of recognition came in 2007 when the trio was awarded the Nobel Prize in Physiology or Medicine. He is also a member of the National Academy of Sciences, the American Academy of Arts and Sciences, and the European Molecular Biology Organization.

Personal life

He is married to Laurie Fraser, and they have a daughter. An avid outdoorsman, he enjoys hiking and skiing in the mountains of Utah. He holds dual citizenship in the United States and Italy. His remarkable life story, from a homeless child in postwar Italy to a Nobel laureate, has been the subject of significant biographical interest.

Category:1937 births Category:Living people Category:American geneticists Category:Nobel laureates in Physiology or Medicine Category:University of Utah faculty Category:Harvard University alumni