CRISPR-Cas9: Programmable Gene Editing
Doudna and Charpentier discover that a bacterial immune system can be reprogrammed to edit any DNA sequence. Biology becomes software.
Explore this event on the interactive timeline →In June 2012, Jennifer Doudna (UC Berkeley) and Emmanuelle Charpentier (Umeå University) published their discovery that the CRISPR-Cas9 system—a natural defense mechanism in bacteria—could be reprogrammed to cut any specific DNA sequence. This turned gene editing from an expensive, imprecise art into a cheap, precise, programmable tool. They won the 2020 Nobel Prize in Chemistry.
Key Numbers
- Gene Edit Cost Before
- ~$5,000
- Gene Edit Cost After
- ~$75
- Discovery → Nobel
- 8 years
Verified Facts
- CRISPR-Cas9 acts like molecular scissors: a guide RNA directs the Cas9 protein to a specific DNA sequence, where it makes a precise cut.
- Before CRISPR, editing a single gene cost ~$5,000 and took months. CRISPR reduced this to ~$75 and a few days.
- Doudna and Charpentier won the 2020 Nobel Prize in Chemistry—just 8 years from discovery to Nobel, one of the fastest in history.
- Feng Zhang (Broad Institute) independently demonstrated CRISPR editing in human cells in 2013, sparking a patent dispute that lasted years.