Harvard chemist David Liu was awarded the prestigious 2025 Breakthrough Prize in Life Sciences for his pioneering work on base editing and prime editing — revolutionary gene-editing platforms that can precisely correct genetic mutations without making double-stranded breaks in DNA. Unlike traditional CRISPR, which cuts the DNA helix and relies on the cell's repair mechanisms, Liu's tools chemically convert one DNA base into another with surgical precision.
These techniques have already entered clinical trials for conditions including sickle cell disease, high cholesterol, and certain cancers. "The ability to correct genetic mutations precisely opens the door to treating thousands of inherited diseases," Liu said. His work represents a fundamental shift in how scientists approach genetic medicine, moving from blunt cuts to precise letter-by-letter corrections of the genetic code.
“Unlike traditional CRISPR, which cuts the DNA helix and relies on the cell's repair mechanisms, Liu's tools chemically convert one DNA base into another with surgical precision.”
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