Science, Space and Technology News 2023
A new CRISPR gene-editing tool, AsCas12f, smaller than the commonly used Cas9, has been engineered for better efficiency and effectiveness in treating genetic disorders. Tested successfully in mice, this tool could lead to more compact and efficient genome-editing applications in humans.
Researchers created a library of possible AsCas12f mutations and then combined selected ones to engineer an AsCas12f enzyme with 10 times more editing ability than the original unmutated type. This engineered AsCas12f has already been successfully tested in mice and has the potential to be used for new, more effective treatments for patients in the future.
The potential of CRISPR to improve our lives is so phenomenal that in 2020, researchers Jennifer Doudna and Emmanuelle Charpentier, who developed the most precise version of the tool named CRISPR-Cas9, were awarded the Nobel Prize in chemistry. This graph shows how efficient two versions of the engineered AsCas12f enzyme are at gene editing , compared to the original unengineered type , and the commonly used Cas9 type . The higher the bar, the more efficient the tool. Credit: Hino et al. 2023
The team has already carried out animal trials with the engineered AsCas12f system, partnering it with other genes and administering it to live mice. Administering treatments directly into the body is preferable to extracting cells, editing them in a lab, and reinserting them into patients, which is more time-intensive and costly.
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