L-608 is a novel ionizable amino lipid designed for formulating lipid nanoparticles (LNPs) to enable efficient subcutaneous (s.c.) delivery of mRNA therapeutics. Engineered to address inflammation associated with mRNA LNPs, L608 integrates seamlessly with steroid prodrugs, such as budesonide-C16 and budesonide-C18:1, to suppress local and systemic inflammatory responses while prolonging therapeutic protein expression. Preclinical studies demonstrate that L608 LNPs significantly reduce injection-site edema (>80% improvement) and lower systemic inflammatory markers (e.g., haptoglobin), while achieving 2–3× higher plasma AUC for proteins like hFGF21 compared to non-steroid LNPs.
Cat.No
DC67282
Name
L608 (Merck-32)
Chemical Properties
CAS
Formula
MW
Storage
2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO
References
Endosomal escape of delivered mRNA from endosomal recycling tubules visualized at the nanoscale-J Cell Biol. 2021 Dec 9;221(2):e202110137. doi
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