相关实验视频

Updated: Jan 12, 2026

Reverse Genetics to Engineer Positive-Sense RNA Virus Variants

Reverse Genetics to Engineer Positive-Sense RNA Virus Variants

Published on: June 9, 2022

负感RNA病毒核体作为基因传递,疫苗开发和抗病毒查的多功能平台

Sheeba Rehman¹, Pruthviraj M Chavan¹, Akanksha Chaturvedi²

¹Department of Biological Science, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India.

Scientific reports

|November 3, 2025

概括

纯化的负链RNA病毒核囊体 (NCs) 可以在细胞内启动病毒复制,绕过进入受体. 这为疫苗和病原体研究提供了一个更安全的平台.

科学领域:

病毒学病毒学
分子生物学分子生物学
疫苗学疫苗学疫苗学

背景情况:

病毒进入宿主细胞通常需要特定的细胞受体,当这些缺乏时,这对研究和疫苗开发构成挑战.
负链 (ns) RNA病毒具有内部复制机制,可以用于新型应用.

研究的目的:

研究从负链RNA病毒中纯化的核囊体 (NC) 的潜力,在细胞内传递时启动病毒复制,绕过传统的进入机制.
为疫苗开发,基因传递和病原体研究建立一个新的,更安全的平台.

主要方法:

清除水囊性口腔炎病毒 (VSV) 核体 (NCs),包括一个G删除的变体 (rVSV-ΔG-TFP).
净化NCs的外源输送到细胞中.
监测基因表达和传染性后代病毒的产生.

主要成果:

交付的NCs启动了一个完整的病毒生命周期,包括从全长NCs的基因表达和后代病毒生成.
虽然自放大,但VSV-ΔG-TFPNCs是非传染性的,显示出作为安全疫苗平台的潜力.
NCs证明了具有自灭活功能的致病性nsRNA病毒组件的安全运输的实用性.

结论:

净化NCs代表了一种新的,本质上更安全的,以及用于各种应用的自我放大平台,包括抗病毒查,疫苗开发,基因传递和生物安全.
这种基于核囊的方法规避了对细胞表面受体的需求,为传统的病毒载体和mRNA系统提供了多功能替代方案.

关键词:

基因输送基因输送基因输送负链RNA病毒.核体中的核体.独立于接收器的接收器.拉布多病毒的病毒.核蛋白复合体净化净化方法这是VSVV的VSV.

更多相关视频

Generation and Assembly of Virus-Specific Nucleocapsids of the Respiratory Syncytial Virus

Generation and Assembly of Virus-Specific Nucleocapsids of the Respiratory Syncytial Virus

Published on: July 27, 2021

High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses

High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses

Published on: May 5, 2014

相关概念视频

Viruses with RNA Genomes

Viruses with RNA Genomes

RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...

Size and Structure of Viral Genomes

Size and Structure of Viral Genomes

Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...

Subviral Agents

Subviral Agents

Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...

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...

Retrovirus Life Cycles

Retrovirus Life Cycles

Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing 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...