Tiny CRISPR enzyme boosts in-body gene editing for targeted therapies
NIH-backed researchers identified the small Al3Cas12f CRISPR enzyme and engineered the Al3Cas12f RKK variant to dramatically improve editing in human cells, raising efficiency from under 10% to over 80% (up to 90% in a key region). This enzyme's size allows packaging into AAV delivery vectors, a major step toward in-body gene therapies for diseases like cancer and ALS; next, researchers will test AAV-packaged delivery to move toward clinical use.