Why mRNA-ionizable LNPs formulations are so short-lived: causes and way-out
- Authors
- De, Anindita; Ko, Young Tag
- Issue Date
- Feb-2023
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Ionizable LNPs; shelf life stability; mRNA hydrolytic degradation; internal structure; hybrid formulation
- Citation
- EXPERT OPINION ON DRUG DELIVERY, v.20, no.2, pp.175 - 187
- Journal Title
- EXPERT OPINION ON DRUG DELIVERY
- Volume
- 20
- Number
- 2
- Start Page
- 175
- End Page
- 187
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/86944
- DOI
- 10.1080/17425247.2023.2162876
- ISSN
- 1742-5247
- Abstract
- IntroductionMessenger ribonucleic acid (mRNA) and small interfering RNA (siRNA) are biological molecules that can be heated, frozen, lyophilized, precipitated, or re-suspended without degradation. Currently, ionizable lipid nanoparticles (LNPs) are a promising approach for mRNA therapy. However, the long-term shelf-life stability of mRNA-ionizable LNPs is one of the open questions about their use and safety. At an acidic pH, ionizable lipids shield anionic mRNA. However, the stability of mRNA under storage conditions remains a mystery. Moreover, ionizable LNPs excipients also cause instability during long-term storage.Area coveredThis paper aims to illustrate why mRNA-ionizable LNPs have such a limited storage half-life. For the first time, we compile the tentative reasons for the short half-life and ultra-cold storage of mRNA-LNPs in the context of formulation excipients. The article also provided possible ways of prolonging the lifespan of mRNA-ionizable LNPs during long storage.Expert opinionmRNA-ionizable LNPs are the future of genetic medicine. Current limitations of the formulation can be overcome by an advanced drying process or a whole new hybrid formulation strategy to extend the shelf life of mRNA-ionizable LNPs. A breakthrough technology may open up new research directions for producing thermostable and safe mRNA-ionizable LNPs at room temperature.
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