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Published on: August 2, 2011
Comprehensive Analytical Characterization of mRNA Influenza Vaccine Under Stress Conditions: Implications for
Jiyoun Kim1,2, Jiyoung Sim3, Seulgi Park3
1R&D Quality Management Unit, GC Biopharma, Yongin, 16924, Gyeonggi, Republic of Korea. jykim77@gccorp.com.
Purpose:
This study aimed to characterize the physicochemical stability of mRNA-lipid nanoparticle (LNP) influenza vaccine candidates under various environmental stressors using forced degradation studies (FDSs) and to correlate these changes with in vitro protein expression.
Methods:
FDSs were conducted to evaluate the effects of temperature, oxidation, hydrolysis, and agitation on mRNA-LNP formulations. Comprehensive analytical techniques were employed to monitor the purity and integrity of mRNA, mRNA encapsulation efficiency, in vitro expression, LNP components, and particle characteristics.
Results:
The study revealed hydrolysis-induced degradation of distearoylphosphatidylcholine (DSPC), a key LNP component, and rapid oxidation-induced mRNA degradation within the LNPs. Agitation was found to increase LNP size, decrease mRNA encapsulation efficiency, and subsequently reduce in vitro protein expression.
Conclusions:
We established robust analytical methods to monitor the quality and stability of mRNA-LNP products. These findings provide a critical foundation for integrated analytical strategies to enhance the stability of mRNA-LNP therapeutics and vaccines during storage, transport, and clinical application.
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