Abstract
Lipid nanoparticles (LNPs) are frequently employed as mRNA vaccine delivery vehicles. LNPs are made up of four types of lipids: cationic lipid, PEG-lipid conjugate, zwitterionic helper phospholipid, and cholesterol. LNP distribution efficiency is significantly impacted by lipid composition, which also controls LNP stability and bilayer fluidity. The various lipids used in the formulation system have distinct properties and contents. To aid in the development of new drugs and vaccines, we developed and validated an HPLC-CAD method for identifying and determining the amounts of four lipids in Yuxi Watson Biotechnology Co., Ltd.'s LNP-encapsulated COVID-19 mRNA vaccines (OmicronXBB.1.5).
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