The study, published in the International Journal of Biological Macromolecules, showcases how scientists used DNA origami – nanoscale shapes made by folding DNA — to transport a peptide called QKCMP, which is known to stimulate angiogenesis, the process by which new blood vessels form.  

“Think of these DNA structures as microscopic delivery drones,” explained the researchers. “They carry the peptide safely through the body and release it slowly, exactly where it’s needed.”  

Angiogenesis plays a central role in healing damaged tissues, especially in wounds, heart conditions, and diseases where blood flow is reduced. But delivering pro-angiogenic factors like QKCMP effectively has long been a challenge – they degrade quickly and don’t always reach the target site.  

To solve this, the team built triangular DNA origami carriers that protected the QKCMP peptide, helped it survive longer, and ensured a steady release. In laboratory tests, the peptide-loaded nanostructures significantly improved biological activity, promoting better blood vessel growth compared to the peptide alone.  

The approach could pave the way for next-generation treatments in regenerative medicine where controlled blood vessel growth is essential for restoring tissue health.  

“This method gives us more control,” the authors noted. “We’re not just delivering the healing signal – we’re guiding when and where it works best.