Breakthrough in Nanoparticle Technology Enhances mRNA Delivery Efficiency
Researchers at the University of British Columbia have made significant advancements in nanoparticle technology, developing a novel lipid nanoparticle (LNP) formulation that enhances the endosomal release efficiency of messenger RNA (mRNA) therapy. The research, published in the journal Biomaterials, demonstrates the potential of this new formulation to improve the delivery of mRNA-based therapies for various diseases.
Key Takeaways:
- The research introduced biodegradable polymers with tertiary amines into lipid nanoparticles (LNPs) to facilitate endosomal release, resulting in a 300% increase in cellular uptake and 400% enhancement in endosomal escape efficiency compared to standard LNPs.
- The optimal polymer-modified LNP (p-LNP) formulation retained a particle size of approximately 80 nm, maintained a neutral surface charge, and exhibited an mRNA encapsulation efficiency of 90%.
- The p-LNP formulation demonstrated no cytotoxicity in cells treated at 1 mg/mL and showed a 100-fold increase in luciferin bioluminescence in the liver compared to standard LNPs after intravenous administration.
- The research found no elevation in inflammatory cytokines in treated mice, including IFN-gamma, IL1b, TNFa, and IL6.
- The p-LNP formulation enhanced transgene expression and showed potential for improved mRNA delivery efficiency.
Statistics:
- 80 nm: Particle size of the polymer-modified LNP (p-LNP) formulation
- 90%: mRNA encapsulation efficiency of the p-LNP formulation
- 300%: Increase in cellular uptake of the p-LNP formulation compared to standard LNPs
- 400%: Enhancement in endosomal escape efficiency of the p-LNP formulation compared to standard LNPs
- 100-fold: Increase in luciferin bioluminescence in the liver after intravenous administration
Sources:
- Biodegradable polymers with tertiary amines enhance mRNA delivery of lipid nanoparticles via improved endosomal escape. Biomaterials, 2025;324:123541.
- VerticalNews. University of British Columbia Reports Findings in Nanoparticles (Biodegradable polymers with tertiary amines enhance mRNA delivery of lipid nanoparticles via improved endosomal escape). Nanotechnology Weekly. July 28, 2025; p 4062.