相关实验视频
Updated: Mar 10, 2026

06:06
In Vitro Analysis of E3 Ubiquitin Ligase Function
Published on: May 14, 2021
6.1K
乌比奎丁E3结合酶KLHL6使耗尽的T细胞重新起作用
Zhuoyao Chen1, Alex N Bullock1, Benedikt M Kessler1,2
1Centre for Medicines Discovery, Nuffield Department of Medicine, Target Discovery Institute, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ UK.
Immunity & inflammation
|March 9, 2026
概括
凯尔奇类蛋白质KLHL6在慢性抗原暴露期间防止T细胞耗尽,这对于有效的癌症免疫疗法至关重要. 恢复KLHL6功能可以通过保持T细胞功能来增强抗瘤免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 持续的抗原刺激导致CD8+T细胞耗尽,损害抗癌和抗病毒免疫力.
- T细胞耗尽限制了当前免疫疗法的有效性.
- 识别防止T细胞耗尽的机制对于改善治疗结果至关重要.
研究的目的:
- 为了研究在调节T细胞耗尽方面,无素E3酶KLHL6的作用.
- 了解慢性T细胞激活期间KLHL6表达是如何调节的.
- 探索KLHL6作为增强抗瘤免疫力的治疗点的潜力.
主要方法:
- 在慢性抗原刺激条件下对T细胞KLHL6表达的分析.
- 研究调节KLHL6和FOXO1.6的信号通路 (PI3K-AKT).
- 通过向TOX和线粒体蛋白质 (例如PGAM5) 等关键调节剂,评估KLHL6对T细胞功能的影响.
主要成果:
- KLHL6作为T细胞耗尽的关键抑制剂.
- 在耗尽的T细胞中,由于通过PI3K-AKT抑制FOXO1.1的慢性信号传递,KLHL6的下调.
- KLHL6通过调节TOX和线粒体因子来保护T细胞功能;其恢复可以增强抗瘤免疫力.
结论:
- KLHL6在维持T细胞功能和预防疲劳方面发挥着至关重要的作用.
- 在T细胞中,KLHL6介导的无处不在与T细胞相关,而不仅仅是B细胞.
- 恢复KLHL6代表了对癌症和慢性感染的有希望的免疫治疗策略.
相关概念视频
Anaphase Promoting Complex
3.5K
The stepwise destruction of specific proteins is necessary for the progression and completion of the cell cycle. Such proteins are ubiquitinated by ubiquitin ligases and then subsequently destroyed by the proteasome. The SCF (Skp1/Cullin/F-box) and the anaphase-promoting complex (APC) are two important ubiquitin ligases involved in cell cycle progression. While SCF is active throughout the cell cycle, APC gets activated during metaphase to anaphase transition. Cdc20 or Cdh1 binds to APC and...
3.5K
The Proteasome
1.9K
Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
1.9K
Delivery Pathways to the Lysosome
10.4K
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
10.4K
Covalently Linked Protein Regulators
9.9K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
9.9K

