相关实验视频

Updated: May 9, 2026

A Protocol for Analyzing Hepatitis C Virus Replication

A Protocol for Analyzing Hepatitis C Virus Replication

Published on: June 26, 2014

病毒-宿主重组变异的肝炎E病毒的特征

Olivia Paronetto¹, Claire Allioux¹, Chloé Diméglio^1,2

¹Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity), UMR 5051 (CNRS), UMR 1291 (INSERM), Université Toulouse III-Paul Sabatier, Toulouse, France.

Journal of virology

|May 7, 2024

概括

具有人类基因插入的E型肝炎病毒 (HEV) 重组变种显示出不同的复制能力. 一些具有增强复制的变体对利巴维林的敏感性较低,其机制与翻译后修改无关.

科学领域:

病毒学病毒学
分子生物学分子生物学
免疫学免疫学免疫学

背景情况:

肝炎E病毒 (HEV) 在免疫功能低下的人群中引起病毒性肝炎和慢性感染.
在这些患者中观察到具有集成人类基因片段的病毒-宿主重组变异 (VHRVs).
利巴维林是治疗慢性HEV感染的药物,但可能出现耐药性.

研究的目的:

描述7种HEV VHRV具有不同人类基因插入的复制能力.
调查这些插入对病毒复制和对利巴维林敏感性的影响.
探索潜在的机制,包括后翻译修改 (PTM),是VHRV复制的基础.

主要方法:

通过将HEV基因组中的特定区域替换为来自人类基因的片段 (RNF19A,ZNF787,KIF1B,EEF1A1,RNA18,RPS17,RPL6) 来产生HEV VHRV.
通过使用RT-qPCR量化细胞培养超浮体和溶解体中的HEV RNA来评估复制能力.
通过免疫染来评估HEV囊蛋白 (ORF2) 表达.
测试了利巴维林对VHRV复制的作用.

主要成果:

七个VHRV中的五个 (RNF19A,ZNF787,KIF1B,RPS17,EEF1A1) 与对照组相比显示出明显更高的HEVRNA度和ORF2表达.
复制增强的VHRVs对利巴维林治疗的敏感性降低 *in vitro*.
在具有和没有复制优势的VHRV之间检测到的PTM没有显著差异.

结论:

HEV VHRV插入并不总是提高*体外*复制.
在VHRV中,复制优势与改变的PTM并没有系统地联系在一起.
驱动差异性VHRV复制和利巴维林耐药性的机制需要进一步研究.

关键词:

乙型肝炎病毒的感染.利巴维林是一种利巴维林.病毒健身病毒健身病毒健身病毒宿主复合变体的复合变体

更多相关视频

Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods

Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods

Published on: May 11, 2018

A Cell Culture Model for Producing High Titer Hepatitis E Virus Stocks

A Cell Culture Model for Producing High Titer Hepatitis E Virus Stocks

Published on: June 26, 2020

相关概念视频

Viral Recombination

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.

Viral Mutations

Viral Mutations

A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material for adaptive...

Bacterial Gastroenteritis

Bacterial Gastroenteritis

Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid receptor...

Arboviral Encephalitis

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...

Hepatitis

Hepatitis

Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...

Viral Hepatitis I: Introduction

Viral Hepatitis I: Introduction

Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...