脂质自组装纳米颗粒作为基于mRNA的疫苗接种的新平台
Arianna De Chiara1,2, Valeria Nele3, Alessia Angelillo3
1CEINGE-Biotecnologie Avanzate S.c.a.r.l., Via Gaetano Salvatore 486, 80131 Naples, Italy.
Molecular therapy. Nucleic acids
|February 25, 2026
概括
新的自组装纳米粒子 (SANP) 技术使信使RNA (mRNA) 疫苗能够在4°C下储存. 这一突破提高了mRNA疫苗的稳定性和分布,克服了当前脂质纳米粒子配方的局限性.
科学领域:
- 生物技术是生物技术.
- 纳米医学是一种纳米医学.
- 疫苗学 疫苗学 疫苗学
背景情况:
- 在脂质纳米颗粒 (mRNA-LNPs) 中制定的合成信使RNA (mRNA) 显示了基因治疗和疫苗的前景.
- 目前的mRNA-LNP配方需要冷链储存,这对运输和分销构成了挑战.
研究的目的:
- 开发一种新的纳米粒子技术,用于稳定基于mRNA的治疗方法.
- 为了克服现有的mRNA疫苗配方的冷藏限制.
主要方法:
- 引入脂质自组装纳米粒子 (SANP) 技术用于mRNA配方.
- 在使用前简单混合即可制备mRNA载荷SANP (mRNA-SANP).
- 对mRNA-SANP的尺寸,封装效率,体稳定性和血液溶解活性进行表征.
- 通过肌内 (IM) 和静脉 (IV) 给药在小鼠中评估mRNA-SANP的疗效和安全性.
- 对纳米粒子-蛋白相互作用的分析和与体内生物分布的相关性.
- 对SARS-CoV-2尖端蛋白编码mRNA-SANPs的免疫反应的评估.
主要成果:
- mRNA-SANPs显示出200nm以下的大小,高mRNA封装度,以及出色的体稳定性.
- 配方在4°C时稳定而不冷,增强了疫苗的稳定性.
- 在体内研究显示高的转基因表达没有观察到毒性或促炎性细胞因子释放.
- 蛋白质指纹分析揭示了与生物分布相关的特定纳米粒子-蛋白质相互作用.
- 编码SARS-CoV-2尖端蛋白的mRNA-SANP的管理引起了显著的免疫反应.
结论:
- SANP技术为传统的mRNA-LNP配方提供了一个稳定的,易于准备的替代方案.
- mRNA-SANPs可以在4°C下储存和运输,从而提高了mRNA治疗方法的可访问性.
- 开发的mRNA-SANPs在体内是安全和有效的,证明了下一代疫苗和基因疗法的潜力.
相关概念视频
02:31Nuclear Export of mRNA
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
02:22Regulated mRNA Transport
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
02:51mRNA Stability and Gene Expression
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability
02:31Nuclear Export of mRNA
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
02:22Regulated mRNA Transport
In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...
02:51mRNA Stability and Gene Expression
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability