相关实验视频
Updated: May 4, 2026

06:44
Isolation of Brain-infiltrating Leukocytes
Published on: June 13, 2011
18.8K
通过细胞死亡独立的神经炎症限制病毒病变
Brian P Daniels1, Annelise G Snyder1, Tayla M Olsen1
1Department of Immunology, University of Washington, Seattle, WA 98109, USA.
Cell
|April 4, 2017
概括
与受体相互作用的蛋白激酶-3 (RIPK3) 限制西尼罗病毒的发病,而不影响细胞死亡. 通过调节化学激素表达和免疫细胞招募,RIPK3协调中枢神经系统 (CNS) 内的免疫反应.
科学领域:
- 免疫学
- 神经科学
- 病毒学
背景情况:
- 已知受体相互作用蛋白激酶-3 (RIPK3) 能够激活死细胞死亡.
- 独立于细胞死亡,RIPK3也在炎症信号中发挥作用.
- 亡有助于抗病毒免疫,但RIPK3在宿主防御中的死亡独立作用尚不清楚.
研究的目的:
- 调查RIPK3在宿主防御西尼罗病毒 (WNV) 感染中的作用.
- 为了确定RIPK3是否独立于其细胞死亡激活功能来限制WNV的发病.
主要方法:
- 使用西尼罗河病毒脑炎 (WNV) 的小鼠模型.
- 野生型 (WT) 鼠标,Ripk3-/-) 鼠标和缺乏死细胞效应剂 (MLKL或MLKL和caspase-8) 的鼠标的死亡率和免疫反应的比较.
- 评估了中枢神经系统 (CNS) 中的化学激素表达和免疫细胞透.
主要成果:
- 与WT对照组相比,Ripk3-/-小鼠的死亡率增加.
- 缺乏MLKL或MLKL和caspase-8的小鼠没有受到影响,这表明RIPK3的死亡独立作用.
- 在Ripk3-/-小鼠中,增强的敏感性与抑制的神经元化学激素表达和减少中枢神经系统T淋巴细胞和髓质细胞的招募有关.
- 在Ripk3-/-小鼠中,外周免疫力保持不变.
结论:
- 独立于死细胞死亡,RIPK3 抑制了 WNV 的致病性.
- 在限制病毒发病过程中,RIPK3 发挥了性作用.
- 在病毒性脑炎期间,RIPK3是中枢神经系统内免疫反应的关键协调者.
相关概念视频
Overview of Cell Death
7.7K
Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
7.7K
Autophagic Cell Death
3.3K
Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
3.3K
Necrosis
5.2K
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
5.2K
Cellular Injury IlI: Cellular Death
70
Cell death is the irreversible loss of cellular structure and function, representing the final stage of severe injury. It plays a key role in both normal physiology and disease.Types of Cell DeathThe two main types are necrosis and apoptosis, though others like necroptosis and pyroptosis also exist.Necrosis:Necrosis is an unregulated form of cell death caused by severe injury such as trauma, toxins, or ischemia. It is characterized by cell swelling, membrane loss, rupture, and leakage of...
70
Cellular Injury IV: Necrosis
63
Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...
63
Encephalitis ll: Pathophysiology
22
Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
22

