相关实验视频

Updated: May 6, 2026

High-throughput Confocal Imaging of Quantum Dot-Conjugated SARS-CoV-2 Spike Trimers to Track Binding and Endocytosis in HEK293T Cells

High-throughput Confocal Imaging of Quantum Dot-Conjugated SARS-CoV-2 Spike Trimers to Track Binding and Endocytosis in HEK293T Cells

Published on: April 21, 2022

通过使用工程外细胞囊泡显示尖端蛋白的mRNA传递抑制SARS-CoV-2

Yuna Nakagawa¹, Yoshimasa Kawaguchi¹, Hisaaki Hirose¹

¹Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan.

|August 5, 2025

概括

研究人员开发了Spike (S) 蛋白显示细胞外囊泡 (EVs),以向和抑制SARS-CoV-2感染. 这些S-EV选择性地与ACE2表达细胞结合,并为治疗效果提供mRNA,提供一种新的COVID-19治疗策略.

科学领域:

生物技术是生物技术.
病毒学病毒学
药物运输药物运输药物运输

背景情况:

严重急性呼吸道冠状病毒2 (SARS-CoV-2) 导致COVID-19,需要新的快速治疗方式.
细胞外囊泡 (EVs) 作为药物载体具有前景,但在特异性和传递效率方面面临挑战.

研究的目的:

开发SARS-CoV-2尖端 (S) 蛋白显示型EV (S-EV) 用于针对性抑制SARS-CoV-2感染.
研究S-EVs结合和进入目标细胞的机制.
评估S-EVs作为mRNA载体,用于传递治疗有效载荷.

主要方法:

设计的电动汽车显示SARS-CoV-2 S蛋白 (S-EVs).
评估了S-EVs对表达血管酶转化酶2 (ACE2) 的细胞的结合特异性.
研究的S-EVs通过像TMPRSS2.2.这样的蛋白质酶调解的膜融合.
利用伪型病毒样粒子证实了携带HAI-2 mRNA的S-EVs对SARS-CoV-2的抑制.

主要成果:

选择性地与ACE2表达细胞结合的S-EVs.
蛋白质S蛋白的蛋白酶分裂以ACE2-和TMPRSS2-依赖的方式促进了S-EVs与标细胞的膜融合.
S-EVs成功地传递了编码为HAI-2的mRNA,抑制了SARS-CoV-2进入细胞.

结论:

S-EV 显示了针对 mRNA 治疗的潜在潜力.
开发的S-EV可以通过选择性细胞结合和mRNA递送来抑制SARS-CoV-2感染.
这种方法为打击COVID-19等病毒感染提供了一个新的策略.

关键词:

异构体是什么? 异构体是什么?细胞外囊泡中的细胞外囊泡.传染性疾病传染性疾病.这就是SARS-CoV-2病毒.尖蛋白质是一种尖蛋白质.提供mRNA的交付.

更多相关视频

Engineering Antiviral Agents via Surface Plasmon Resonance

Engineering Antiviral Agents via Surface Plasmon Resonance

Published on: June 14, 2022

A "Plug-And-Display" Nanoparticle Vaccine Platform Based on Outer Membrane Vesicles Displaying SARS-CoV-2 Receptor-Binding Domain

A "Plug-And-Display" Nanoparticle Vaccine Platform Based on Outer Membrane Vesicles Displaying SARS-CoV-2 Receptor-Binding Domain

Published on: July 25, 2022

相关概念视频

siRNA - Small Interfering RNAs

siRNA - Small Interfering RNAs

Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...

Experimental RNAi

Experimental RNAi

RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...