Disorganized Lipid Nanoparticles Boost mRNA Delivery, Study Finds

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A groundbreaking study led by scientists at the University of Copenhagen has found that embracing a certain level of disorder within lipid nanoparticles (LNPs) can significantly boost the efficiency of mRNA delivery inside cells. Traditionally, drug developers have aimed to pack as much medicine as possible into each nanoparticle, but the study's findings indicate that highly organized particles may resist releasing their cargo once they reach their destination. In contrast, disorganized particles with some separation between charges can respond better to changing conditions within the cell, leading to more effective release of the medicine.

Why it matters

This research challenges the conventional wisdom in the field of drug delivery, as it suggests that the key to enhancing delivery efficiency might lie in embracing a certain level of disorder within the LNPs. This could have significant implications for the development of mRNA-based treatments for various diseases, including cancer, rare genetic disorders, and more.

The details

Using a high-throughput method, the scientists measured individual nanoparticles, a million at a time, instead of relying on average batch properties. They discovered two distinct subpopulations: organized particles with neatly structured cargo and amorphous particles with a more disorganized structure. Surprisingly, the latter proved to be more efficient in delivering their cargo inside cells. The researchers believe that highly organized particles may resist releasing their cargo once they reach their destination, while disorganized particles, with some separation between charges, can respond to changing conditions within the cell, leading to the release of the medicine.

• The study's findings are set to be unveiled at the Biophysical Society Annual Meeting in San Francisco later this month (April 2026).

What they’re saying

What’s next

The researchers are now focused on finding ways to load sufficient RNA into the LNPs while preserving the disorganized structure that enhances cellular delivery, as this could revolutionize drug delivery and impact the development of treatments for various diseases.