流产性艾滋病毒感染中介于人类淋巴细胞组织的CD4 T细胞枯竭和炎症
Gilad Doitsh1, Marielle Cavrois, Kara G Lassen
1Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA.
Cell
|November 30, 2010
概括
艾滋病毒通过流产性感染消耗CD4 T细胞,引发宿主防御反应. 这种机制涉及不完整的病毒遗传物质,导致被编程的细胞死亡和炎症,有助于艾滋病毒的发病.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- CD4 T细胞枯竭是艾滋病毒感染的标志,但根本机制尚未完全理解.
- CD4 T细胞死亡的很大一部分发生在旁观者细胞中,而不是生产性感染的细胞.
研究的目的:
- 阐明HIV感染期间旁观者CD4 T细胞死亡的机制.
- 调查堕胎性艾滋病毒感染在CD4 T细胞枯竭中的作用.
主要方法:
- 人体桃体组织感染艾滋病毒的ex vivo培养.
- 用针对艾滋病毒生命周期不同阶段的抑制剂治疗 (进入,逆转录,后期事件).
- 对宿主防御通路的分析,包括酶激活和核酸传感.
主要成果:
- 桃体组织中由HIV诱导的CD4 T细胞死亡主要影响旁观者细胞 (>95%).
- 抑制HIV的进入或早期逆转录可以防止旁观者细胞死亡.
- 流产性感染导致细胞质核酸的积累,激活酶-3和酶-1.
- 这种宿主反应有助于亡和炎症.
结论:
- 流产性艾滋病毒感染,而不是生产性感染,是CD4 T细胞枯竭的主要驱动因素.
- 宿主对不完整的病毒遗传物质的天生的免疫反应对艾滋病毒免疫病原发生有显著的贡献.
- 针对早期的病毒事件或随后的宿主反应可能提供治疗策略.
相关概念视频
Immunodeficiency Diseases
1.4K
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...
There are three main causes of immunodeficiency...
1.4K
Immune Response Against Viral Pathogens
1.2K
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...
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...
1.2K
Retrovirus Life Cycles
48.1K
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...
48.1K


