• The tiny fatty capsules that deliver COVID-19 mRNA vaccines into billions of arms may work better when they’re a little disorganized. • That’s the surprising finding from researchers who developed a new way to examine these drug-delivery vehicles one particle at a time-revealing that cramming in more medicine doesn’t always mean better results.
Article Summaries:
- Researchers have found that lipid nanoparticles-tiny fatty capsules used to deliver COVID‑19 mRNA vaccines-may be more effective when they are less densely packed. Using a novel single‑particle analysis technique, scientists examined individual nanoparticles and discovered that a slightly disordered, “messier” arrangement can improve drug delivery compared to tightly packed particles. The study shows that simply loading more mRNA into each capsule does not guarantee better performance; instead, a looser configuration enhances the particles’ ability to enter cells and release their therapeutic payload. This insight could inform the design of more efficient vaccine and drug delivery systems.
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