BIOBRIEF
Nagoya University team uses silver nanoparticles to cut DNA at chosen sites, leaving longer "sticky ends" that snap fragments together more efficiently than standard enzymes.
Nagoya University researchers, working with a Gifu University collaborator, have used silver nanoparticles to cut chemically modified DNA at designed positions, producing "sticky ends" long enough to snap fragments together two to five times more efficiently than standard restriction enzymes.
The team, including Prof. Hiroshi Abe and Asst. Prof. Masahito Inagaki at Nagoya and Prof. Natsuhisa Oka at Gifu, sidestepped the recognition-site limits of conventional molecular scissors by attaching silver nanoparticles to chemically modified DNA and using silver chemistry to cleave the strand where they chose. The cut leaves longer single-stranded overhangs, the sticky ends that fragments use to find each other, which the team says is what drives the two-to-fivefold efficiency gain reported in Nucleic Acids Research.
The chemistry builds on silver-ion DNA cleavage first reported in 1990-1992. The new contribution is applying that cleavage to long-chain DNA assembly with longer sticky ends. The Nagoya University press release is dated Aug 19, 2026, with coverage also from ScienceDaily, SciTechDaily, and The Debrief.
Stated downstream targets include gene therapies, cancer vaccines, engineered drugs, advanced crops, and animal models. The method is a research-stage tool that works on chemically modified DNA, not a drop-in replacement for existing production lines, and no independent expert reaction or paper-level yield data was available at press time.