Cryoprotectants are needed for the storage of lipid nanoparticles (LNPs). Here, the authors report on a study which shows that freezing can be harnessed to reformulate LNPs in a way that both preserves their integrity and boosts mRNA delivery after sub-zero storage by increasing endosomal escape.
- Xingdi Cheng
- Xia Zheng
- Jianjun Wang