相关实验视频

Updated: Jun 16, 2026

Isolation and Quantification of Zika Virus from Multiple Organs in a Mouse

Isolation and Quantification of Zika Virus from Multiple Organs in a Mouse

Published on: August 15, 2019

干扰素e限制了女性生殖道中的寨卡病毒感染

Chuan Xu¹, Annie Wang¹, Laith Ebraham¹

¹Public Health Research Institute, Rutgers, New Jersey Medical School, Newark, NJ 07103, USA.

|November 13, 2023

概括

干扰素epsilon (IFNɛ) 能防止阴道寨卡病毒 (ZIKV) 感染. 这项研究表明,IFNɛ对于女性生殖道的宿主防御至关重要,即使没有其他I型IFN.

科学领域:

免疫学免疫学免疫学
病毒学病毒学
生殖生物学生殖生物学

背景情况:

干扰素epsilon (IFNɛ) 是I型干扰素,参与宿主防御性传播感染.
寨卡病毒 (ZIKV) 构成重大威胁,特别是对孕妇,因为它具有感染女性生殖道 (FRT) 的能力.
IFNɛ在活体中对抗ZIKV感染的特定作用在很大程度上仍未被探索.

研究的目的:

调查IFNɛ在保护宿主免受阴道ZIKV感染中的作用.
确定单独的IFNɛ是否可以提供对ZIKV的保护.
阐明FRT中IFNɛ介导保护的机制.

主要方法:

产生和分析IFNɛ缺乏的小鼠.
通过阴道和皮下途径评估ZIKV感染易感性.
评估宫性阴道上皮质屏障的完整性.
用重组IFNɛ来评估保护作用.

主要成果:

IFNɛ是由FRT中的各种细胞表达的,包括上皮细胞,免疫细胞和树皮细胞.
缺少IFNɛ的小鼠表现出宫和阴道的完整性受损,以及对阴道ZIKV感染的易感性增加.
IFNɛ缺乏导致FRT中ZIKV感染的严重程度,持续时间和深度增加.
外源IFNɛ给药保护IFNɛ缺乏和IFNAR1缺乏的小鼠免受阴道ZIKV挑战.

结论:

IFNɛ在宿主防御阴道ZIKV感染方面发挥着至关重要的作用.
IFNɛ足以独立于其他I型IFN和IFNAR1通路提供保护.
IFNɛ是防止通过性接触传播ZIKV的关键调解者.

更多相关视频

Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice

Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice

Published on: October 17, 2018

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons

Published on: August 23, 2016

相关概念视频

Inhibitors of Virion Maturation and Assembly

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...

Inhibitors Of Virion Release

Inhibitors Of Virion Release

Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...

Inhibitors of Viral Protein Synthesis

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...

RNA Interference

RNA Interference

RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...