Science子刊封面：加入三种氨基酸，将LNP-mRNA递送效率提升20倍

Core Insights - The article discusses the significant role of lipid nanoparticles (LNP) in the delivery of therapeutic mRNA and highlights a recent study that enhances the efficiency of this delivery method through amino acid supplementation [2][3][6]. Group 1: Study Findings - The research published in Science Translational Medicine demonstrates that an amino acid supplement composed of methionine (Met), arginine (Arg), and serine (Ser) can significantly improve the in vivo delivery efficiency of LNP-mediated mRNA and gene editing [3][6]. - The study shows that the combination of LNP and the amino acid supplement can increase mRNA expression levels by 5 to 20 times in various cell types and lipid formulations [10]. - In preclinical mouse models, the co-administration of LNP and the amino acid supplement can enhance mRNA expression levels by 8 to 13 times through different administration routes [10]. Group 2: Mechanism of Action - The research indicates that the delivery efficiency of LNP is influenced by cellular metabolism, with physiological metabolic conditions limiting mRNA expression [7][10]. - The amino acid supplement enhances the clathrin-independent carrier (CLIC) pathway of cellular endocytosis, leading to improved uptake of LNP and the mRNA it carries [10]. - In acute liver injury mouse models, the combination of LNP delivering growth hormone mRNA and the amino acid supplement significantly improves liver growth hormone expression and reduces inflammation [10]. Group 3: Implications for Future Research - The findings suggest that transient modulation of the metabolic environment could be a novel strategy to enhance the effectiveness of LNP-based mRNA therapies and gene editing [6][10]. - The study emphasizes the importance of specific amino acid mixtures as co-delivery agents in improving the outcomes of mRNA-based cellular and gene therapies [10].