CRISPR DNA Editing Tool Gets Major Upgrade

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News Story Source: Technocracy.News
A new form of the genome-editing tool CRISPR-Cas9 appears to significantly expand the range of diseases that could be treated with the technology, by enabling scientists to precisely change any of DNA's four "letters" into any other and insert or delete any stretch of DNA — all more efficiently and precisely than previous versions of CRISPR. Crucially, scientists reported on Monday, it accomplishes all that without making genome-scrambling cuts in the double helix, as classic CRISPR and many of its offshoots do.

News about this "prime editing" began circulating among CRISPR-ites this month, when the inventors unveiled it at a meeting at Cold Spring Harbor Laboratory. Since then, "the excitement has been palpable," said genetic engineer Fyodor Urnov of the University of California, Berkeley, who was not involved in the research.

"I can't overstate the significance of this," he said, likening the creation of ever-more kinds of g
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