相关实验视频

Updated: Jul 15, 2025

Delivery of Modified mRNA in a Myocardial Infarction Mouse Model

Delivery of Modified mRNA in a Myocardial Infarction Mouse Model

Published on: June 11, 2020

修改的mRNA配方和稳定性用于心脏和骨肌肉的输送

Magdalena M Żak^1,2,3, Keerat Kaur^1,2,3, Jimeen Yoo^1,2,3

¹Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.

|September 28, 2023

概括

修改的mRNA (modRNA) 疫苗显示出希望,但存储和副作用令人担忧. 这项研究引入了一种骨肌特异性系统,用于稳定,向的基因表达,提高安全性和效率.

科学领域:

生物技术是生物技术.
分子生物学分子生物学
疫苗开发疫苗开发

背景情况:

改性mRNA (modRNA) 技术使得蛋白质快速表达,用于SARS-CoV-2疫苗.
关键的挑战包括严格的冷链要求和潜在的非目标副作用.
之前的研究重点是直接注射裸体或脂质纳米粒子 (LNP) 封装的modRNA.

研究的目的:

在不同的存储条件下评估裸体和LNP封装modRNA的稳定性.
为了比较肌肉内输送后裸体与LNP封装modRNA的表达特征.
开发和评估一种针对性,肌肉特定的modRNA翻译的新系统.

主要方法:

在4°C和室温下对modRNA完整性进行了研究,最高可持续7天.
在肌肉内注射裸体和LNP封装的modRNA后,比较蛋白质表达模式.
开发并测试了一种骨肌特异的modRNA转化系统 (SMRTs),用于LNP封装的modRNA.

主要成果:

裸体modRNA在4°C下稳定7天;在室温下稳定7天的LNP-modRNA.
用LNP封装的modRNA显示了增强的蛋白质表达,但也表达了目标外的表达.
在SMRT平台上,LNP封装的modRNA主要表现为骨肌特异性翻译.

结论:

该SMRTs平台为modRNA疫苗提供了更好的稳定性和储存条件.
SMRTs可实现向基因表达,减轻与非向蛋白质生产相关的风险.
这种LNP封装的modRNA系统为肌肉内基因输送提供了一个安全,稳定和高效的平台.

关键词:

脂质纳米颗粒封装的mRNA.提供mRNA的交付.在mRNA的稳定性上.

更多相关视频

Systemic Delivery of MicroRNA Using Recombinant Adeno-associated Virus Serotype 9 to Treat Neuromuscular Diseases in Rodents

Systemic Delivery of MicroRNA Using Recombinant Adeno-associated Virus Serotype 9 to Treat Neuromuscular Diseases in Rodents

Published on: August 10, 2018

Stable Knockdown of Genes Encoding Extracellular Matrix Proteins in the C2C12 Myoblast Cell Line Using Small-Hairpin shRNA

Stable Knockdown of Genes Encoding Extracellular Matrix Proteins in the C2C12 Myoblast Cell Line Using Small-Hairpin shRNA

Published on: February 12, 2020

相关概念视频

mRNA Stability and Gene Expression

mRNA Stability and Gene Expression

Regulated mRNA Transport

Regulated mRNA Transport

RNA Stability

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...