相关实验视频

Updated: Jul 1, 2025

Peptide-based Identification of Functional Motifs and their Binding Partners

Peptide-based Identification of Functional Motifs and their Binding Partners

Published on: June 30, 2013

CARD8炎症酶决定HIV/SIV的发病和疾病的进展

Qiankun Wang¹, Kolin M Clark¹, Ritudhwaj Tiwari¹

¹Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, Saint Louis, MO, USA.

|March 1, 2024

概括

在致病性感染中,CARD8炎症酶会感知HIV蛋白酶,导致CD4+T细胞死亡. 自然宿主中的功能丧失突变阻止了这种枯竭,解释了非致病性SIV/HIV结果.

科学领域:

免疫学
病毒学
细胞生物学

背景情况:

CD4+ T 细胞的枯竭导致艾滋病毒/SIV 病变和艾滋病.
特别是在未感染细胞中,CD4+ T细胞损失的机制尚未完全理解.
尽管病毒性高,但天然宿主如烟灰对CD4+T细胞的消耗有抵抗力.

研究的目的:

研究CARD8炎症酶在HIV/SIV诱导的CD4+T细胞枯竭中的作用.
确定解释自然宿主中对CD4+T细胞枯竭的抵抗机制.
确定CARD8激活是否有助于致病性HIV/SIV感染.

主要方法:

在HIV进入时评估CARD8炎症酶激活.
使用了缺乏CARD8细胞的人性化小鼠.
在自然HIV/SIV宿主中分析了CARD8基因序列.

主要成果:

艾滋病毒蛋白酶激活了CARD8炎症酶,在静止细胞中诱导了热死.
T细胞激活抑制了CARD8并增加了HIV的宽容性.
在 CARD8 缺乏细胞的人性化小鼠中,CD4+ T 细胞的枯竭延迟.
在自然宿主中发现了功能丧失的CARD8突变.

结论:

在致病性感染中,由HIV蛋白酶激活的CARD8炎症酶会导致CD4+T细胞的枯竭.
自然宿主中的CARD8突变会对CD4+T细胞耗尽产生抗性.
针对CARD8可能为HIV/SIV感染提供治疗策略.

关键词:

卡片8 CD4 ((+) T细胞艾滋病毒没有SIV 卡斯帕斯1 炎症组非人类灵长类动物热症病毒进入病毒蛋白酶

更多相关视频

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals

Published on: January 5, 2016

Single-cell Quantitation of mRNA and Surface Protein Expression in Simian Immunodeficiency Virus-infected CD4+ T Cells Isolated from Rhesus macaques

Single-cell Quantitation of mRNA and Surface Protein Expression in Simian Immunodeficiency Virus-infected CD4+ T Cells Isolated from Rhesus macaques

Published on: September 25, 2018

相关概念视频

Immune Response Against Viral Pathogens

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

Immunodeficiency Diseases

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...