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News
Researchers at Rice University have engineered a supercharged version of CRISPR's Cas13a enzyme that detects HIV and other RNA viruses with 100 times greater sensitivity — without sacrificing stability. Published in Cell Chemical Biology, the tool could be adapted to detect a wide range of viruses, from SARS-CoV-2 to Ebola, using the same enzyme with a simple guide swap.
Scientists at Rice University have taken CRISPR technology to the next level — not for gene editing, but for virus detection. Their newly engineered version of the Cas13a enzyme, published in Cell Chemical Biology, can detect RNA from viruses like HIV with 100 times greater sensitivity than its predecessor, all while maintaining the stability needed to function under tough lab conditions like high temperatures.
The key challenge was balancing two competing needs: sensitivity (detecting even a single strand of RNA per microliter of liquid) and stability (surviving harsh assay conditions). The team first resolved the 3D structure of Cas13a to identify the right regions to tweak. After testing two modifications, they found that altering just one region hit the sweet spot — dramatically boosting sensitivity without making the enzyme so reactive it produced false signals.
Key Takeaways:
Why it matters: Faster, more sensitive, and adaptable virus detection tools are critical for both clinical diagnostics and pandemic preparedness. This upgraded CRISPR platform could one day power point-of-care tests that catch infections earlier and more reliably.
