相关实验视频
Updated: Sep 10, 2025

09:03
Analysis of Human Natural Killer Cell Metabolism
Published on: June 22, 2020
7.0K
通过调节糖解和基因素乙化,ACLY促进NK细胞效应器功能
Hyogon Sohn1, Ana Kolicheski1, Jennifer Poursine-Laurent1
1Department of Pediatrics, Division of Rheumatology and Immunology, Washington University in St Louis, St Louis, MO, United States.
Journal of immunology (Baltimore, Md. : 1950)
|August 25, 2025
概括
ATP酸酶 (ACLY) 对于自然杀手细胞的功能至关重要. 缺乏ACLY会损害NK细胞的免疫力,但酸盐补充会恢复它们的效应功能,突出ACLY
科学领域:
- 免疫学
- 细胞生物学
- 代谢过程
背景情况:
- 自然杀手细胞 (NK) 是对抗病毒和抗瘤反应至关重要的先天性免疫细胞.
- 在细胞代谢中,ATP酸酶 (ACLY) 起着关键的作用,产生细胞酸辅酶A.
- 在NK细胞免疫中ACLY的作用在很大程度上仍未被探索.
研究的目的:
- 研究ATP酸酶 (ACLY) 在自然杀手细胞的功能能力中的作用.
- 阐明ACLY对NK细胞激活和效应器功能影响的分子机制.
主要方法:
- 使用可诱导的基因小鼠模型创建缺少ACLY的NK细胞.
- 在IL-15激活后评估NK细胞功能,包括糖解,增殖,细胞因子产生和细胞毒性.
- 进行转录和表观遗传分析以分析基因表达和基因素乙化模式.
- 研究了乙补充剂对ACLY缺陷NK细胞功能的影响.
主要成果:
- 缺乏ACLY的NK细胞在糖解,增殖,细胞因子产生和细胞毒性方面表现出显著的缺陷.
- 通过DAP10和DAP12适配蛋白调节的反应受损,改变了它们的表达.
- 乙酸补充剂可以挽救大多数缺乏ACLY的NK细胞的功能缺陷,恢复受体功能和表达.
结论:
- ATP酸酶 (ACLY) 对于最佳的自然杀手 (NK) 细胞效应器功能至关重要.
- 在调节DAP10/12表达和NK细胞激活方面,ACLY衍生的细胞酶甲是至关重要的.
- 向ACLY或其代谢产物是调节NK细胞基础免疫疗法的潜在策略.
相关概念视频
Histone Modification
13.8K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
13.8K
Spreading of Chromatin Modifications
8.5K
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
Writers
The writer...
8.5K
Cells of the Innate Immune Response
3.2K
The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
3.2K
Cytotoxic T Cells-mediated Immune Response
1.9K
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
1.9K
Chromatin Modification in iPS Cells
1.9K
Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
1.9K
NF-κB-dependent Signaling Pathway
7.8K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
7.8K

