脂质体脂质纳米颗粒用于mRNA的肝外输送
Miffy Hok Yan Cheng1, Yao Zhang2,3,4, Kevin Fox2
1Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada. miffy.cheng@ubc.ca.
Nature communications
|May 3, 2025
概括
新的脂质纳米粒子 (LNP) 系统具有高双层脂质含量,可以改善mRNA向肝外组织的输送. 这些脂质体LNP显示出更长的循环时间和增强的转染,这对于先进疗法至关重要.
科学领域:
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
- 分子生物学分子生物学
背景情况:
- 有效地将mRNA治疗药物输送到肝外组织仍然是一个挑战.
- 脂质纳米粒子 (LNP) 系统对于mRNA输送至关重要,但它们的循环时间和向需要优化.
研究的目的:
- 研究具有高比例双层形成脂质 (卵菌素和胆固醇) 的LNP-mRNA系统.
- 为了评估双层脂质对可离子化脂质分子比对LNP特性和体外转化疗效的影响.
主要方法:
- 使用不同分子比率的卵米林,胆固醇和可离子脂质来制备LNP-mRNA系统.
- 描述LNP形态,mRNA封装效率和体外转染功率.
- 对LNP循环寿命和血蛋白吸附的评估.
主要成果:
- 在双层脂质与可离子化脂质分子比率为4-0.67的两层脂质中配制的LNP实现了90-100%的mRNA封装效率和高的体外转染效率.
- 摩尔比率为4的系统表现出具有固体核心的脂质体形态,导致与Onpattro类LNP相比更长的循环寿命.
- 长时间的循环与血蛋白吸附减少有关,增强的传染是由于mRNA从内体内固体核释放.
结论:
- 具有高双层脂质含量的脂质体LNP显示出卓越的肝外输送能力.
- 这些新的LNP配方为mRNA疗法提供了更好的循环稳定性和转染效率.
- 这些发现为开发非肝脏标的先进LNP传递系统提供了基础.
相关概念视频
Nucleic acids
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
Nucleic Acids
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
Regulated 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...
Nuclear 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...
Regulated 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...
Nucleic Acid Structure
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...


