Nature Biotechnology: Two Independent Groups Publish DNA-Guided CRISPR Systems, Overturning the RNA-Guide Paradigm Established in 2012

Two independent research groups — one at the University of Florida and one at Hong Kong University of Science and Technology (HKUST) — published landmark findings in Nature Biotechnology during the week of May 18, 2026, demonstrating that CRISPR systems can be programmed using DNA guide molecules rather than the RNA guides used since Doudna and Charpentier's foundational 2012 work. DNA-guided CRISPR represents a fundamental paradigm shift: DNA molecules are inherently more chemically stable than RNA, are less prone to enzymatic degradation in biological environments, and can potentially be synthesized more cheaply and uniformly. The University of Florida group showed that their DNA-guided CRISPR variant achieves sequence-specific targeting and editing comparable to conventional RNA-guided Cas9. The HKUST team demonstrated that DNA guides flip the gene-editing script — enabling new chemistry that could improve the precision and safety profile of guide molecules. Potential near-term applications identified: (1) Point-of-care CRISPR diagnostics — DNA-guided Cas systems may be more practical for use in lateral-flow strip tests and field conditions due to greater stability; (2) Antiviral therapeutics — DNA-guided targeting of viral genomes with enhanced stability; (3) Enhanced gene editing therapies — DNA guides with novel chemical modifications could reduce immunogenicity. Both groups note that the finding opens a new subfield of 'DNA-guided CRISPR' research with potential clinical and diagnostic implications, though human clinical applications remain years away.