Uncovering the influence of lyoprotection on stability of mRNA-LNPs after lyophilization and high temperature storage
Researchers compared 12 lyophilized mRNA-LNP formulations containing sucrose, trehalose, and polyvinylpyrrolidone. A ternary protectant system at a 1:20 lipid-to-protectant ratio preserved particle properties, RNA integrity, and in vitro transfection after one month at 40°C. Sucrose crystallization reduced protection. The results show why physical measurements need functional confirmation and do not establish a clinical product shelf life.
DOI: 10.1016/j.jconrel.2026.115412