Peng Yin of Harvard Medical School, the leader of the study (abstract), says that “any technological applications are highly speculative”. But he thinks he could create DNA tiles using L-DNA, a mirror-image form of the classic double helix that is not found in nature. Such structures might be useful for designing nano-scale devices for delivering drugs, especially because they would be less likely to be broken down by DNA-cutting enzymes or trigger an immune reaction.
The new technique represents a step forward from DNA origami, which uses much longer strands and smaller DNA staples to hold the strand in place."
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