相关实验视频

Updated: Jan 7, 2026

Synthesis of Stimuli-responsive Nanogels using Aqueous One-step Crosslinking and Co-nanopolymerization

Synthesis of Stimuli-responsive Nanogels using Aqueous One-step Crosslinking and Co-nanopolymerization

Published on: January 24, 2025

红氧反应性同为增强的mRNA输送和细胞内释放

Shuling Ren^1,2, Xinyu Lin^1,2, Qijing Xie^1,2

¹State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Department of Laboratory Medicine, School of Public Health, Xiamen University, Xiamen 361102, China.

|December 26, 2025

概括

一个新的系统,HBpep-SS4,通过形成氧化还原反应性协体,提供高效和安全的信使RNA (mRNA) 传递. 这种生物相容的方法简化了合成,并增强了细胞核酸RNA释放,用于先进的核酸疗法.

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:

有效的信使RNA (mRNA) 传递对于核酸疗法至关重要,但面临着当前脂质纳米粒子技术的挑战,包括生物安全问题和有限的内体逃生.
阶段分离 (PSP) 是一种生物相容的替代品,但往往难以保持结构稳定性和受控的细胞内释放.

研究的目的:

开发一种化学定义的,单组件的协同化系统 (HBpep-SS4) 以提高具有内在氧化还原反应能力的mRNA递送.
评估系统对封装各种RNA载荷的能力,实现高效的转染,并使基因组编辑等功能应用成为可能.

主要方法:

开发HBpep-SS4,这是一种与双联囊蛋白设计的,用于氧化还原反应和协同形成.
对各种RNA类型的封装效率评估,包括自我放大RNA.
通过多个细胞系进行传染效率测试,并通过基因组编辑试验 (EGFP破坏,HBB位点编辑) 进行功能验证.
关于细胞吸收途径和内体逃逸的机制研究.

主要成果:

HBpep-SS4形成稳定的协体,封装了95%以上的mRNA,并表现出谷氨触发的细胞分裂释放.
通过多个细胞系实现了对线性,圆形和大型自我放大RNA的高传染效率.
证明成功编辑基因组,86.0%的EGFP破坏和72.5%的HBB位点编辑.
通过细胞和绕过内体贩运的细胞吸收被观察到,在没有有毒副产品的减少环境中分解.

结论:

HBpep-SS4是一个简约的,单元系统,具有序列编码的环境响应性,以确保安全和高效的mRNA传递.
该系统简化了合成,提高了可扩展性,并显示了各种基于RNA的治疗应用的巨大潜力.
主序编码的响应性为集成结构,功能和控制释放在基于的交付平台中提供了一个有希望的策略.

关键词:

配送RNA配送RNA的时间协类动物协类硫化二氧化物键的修饰方法液态 - 液态相隔离方法氧化还原反应释放的释放

更多相关视频

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein

Published on: June 18, 2020

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA

Published on: February 1, 2019

相关概念视频

Riboswitches

Riboswitches

Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...

Directing Proteins to the Rough Endoplasmic Reticulum

Directing Proteins to the Rough Endoplasmic Reticulum

The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...

Covalently Linked Protein Regulators

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....