通过激活Nrf2,CDDO-Imidazole通过激活Nrf2来调节红细胞对KEL抗原的合免疫
bioRxiv : the preprint server for biology
|April 16, 2025
概括
激活Nrf2抗氧化途径会抑制红细胞的免疫. Nrf2激活剂可能提供一种预防策略,以防止输血接受者发生抗体反应.
科学领域:
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
- 分子生物学分子生物学
背景情况:
- 红细胞 (RBC) 配免疫可以引起血溶性输血反应.
- 抑制与免疫的机制对于开发预防性干预至关重要.
- 核因子红色素衍生的2-样2 (Nrf2) 是抗氧化途径的主调节者.
研究的目的:
- 研究 Nrf2 激活在调节红细胞合免疫的作用.
- 为了确定Nrf2激活剂CDDO-Im是否可以抑制抗RBC抗体的产生.
主要方法:
- 用CDDO-Im.治疗人类巨细胞和小鼠白细胞.
- 对Nrf2-激活基因表达和IFNα/β刺激基因表达的评估.
- 输血KEL抗原表达红细胞到野生型和Nrf2缺乏的小鼠,有或没有CDDO-Im治疗.
主要成果:
- CDDO-Im诱导的Nrf2-激活基因表达和抑制的IFNα/β刺激的基因表达.
- 在野生型小鼠中,CDDO-Im治疗抑制了抗KEL IgG的产生,并改善了红细胞恢复.
- 在缺乏Nrf2的小鼠中,这些效应被消除了,表明了Nrf2的依赖.
结论:
- Nrf2抗氧化途径的激活调节了红细胞对KEL抗原的合免疫.
- Nrf2激活剂可以作为潜在的预防性干预措施,以抑制输血接受者的合免疫.
相关概念视频
Regulation of Hematopoietic Stem Cells
3.1K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.1K
B Cell Activation and Differentiation
1.2K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
1.2K
Rh Blood Group
1.2K
The Rhesus (Rh) antigen is crucial in determining blood groups and ensuring compatibility during blood transfusions.
1.2K
Regulation of the Unfolded Protein Response
2.3K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.3K
Cytotoxic T Cells-mediated Immune Response
736
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...
736


