通过激活炎症单细胞,IFN-γ促进iMCD的进展
Xuejiao Yin1, Yi Liu2, Shengnan Ding1
1Department of Hematology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
Blood
|March 31, 2025
概括
异常多中心卡斯特曼病 (iMCD) 涉及IL-6和IFN-II通路. 激活的B细胞产生IL-6,而单细胞通过IFN-II与NK/NKT细胞相互作用,驱动iMCD中的炎症风暴.
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:
- 异形多中心卡斯特曼病 (iMCD) 需要更好地了解预后和治疗方法.
- 干白素-6 (IL-6) 和免疫细胞相互作用在iMCD病变发生中的作用尚未完全阐明.
研究的目的:
- 用单细胞RNA测序来研究iMCD中的免疫场景.
- 在iMCD中识别IL-6和IL-6受体 (IL-6R) 的细胞来源.
- 探索免疫细胞交叉的作用,特别是涉及II型干扰素 (IFN-II) 信号传递,在iMCD爆发和缓解中.
主要方法:
- 来自15名iMCD患者和4名健康对照者的外周血液单核细胞 (PBMC) 的单细胞RNA测序 (scRNA-seq).
- 对淋巴结和骨髓样本进行IL-6来源识别的分析.
- 细胞聊天分析以阐明免疫细胞通信网络.
- 血清干扰素- (IFN-γ) 与疾病严重程度和治疗耐药性的相关性分析.
主要成果:
- 激活的B细胞是IMCD患者淋巴结和周围血液中的IL-6的主要来源.
- 单细胞,特别是CCL单细胞,表达IL-6R,并显示激活IL-6信号,可能导致周围炎症.
- 在iMCD爆发期间,CCL单细胞通过增强的IFN-II信号与NK/NKT细胞进行接触,缓解期间的相互作用减少.
- 血清IFN-γ水平与iMCD严重程度和治疗耐药性正相关,在一个独立的队列中得到验证.
结论:
- 在iMCD病变发生过程中,IL-6通路仍然至关重要.
- II型干扰素 (IFN-II) 途径的激活显著导致iMCD中的炎症风暴.
- 特定的免疫细胞相互作用和细胞因子概况为iMCD严重程度和治疗点提供了潜在的生物标志物.
更多相关视频
10:10Experimental Infection with Listeria monocytogenes as a Model for Studying Host Interferon-γ Responses
Published on: November 16, 2016
13.5K
08:37Induction of Murine Intestinal Inflammation by Adoptive Transfer of Effector CD4+CD45RBhigh T Cells into Immunodeficient Mice
Published on: April 21, 2015
16.4K
相关概念视频
Differentiation of Common Myeloid Progenitor Cells
3.1K
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
3.1K
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
103
Tumor Necrosis Factor (TNF), a proinflammatory cytokine, contributes significantly to the inflammation seen in Crohn's disease. It exists as soluble TNF and membrane-bound TNF, with actions mediated through TNF receptors (TNFR). TNFR activation leads to the release of proinflammatory cytokines, T-cell activation, collagen production, and leukocyte migration, all contributing to inflammation in Crohn's disease. Anti-TNF monoclonal antibodies, namely infliximab (Remicade), adalimumab...
103
T Cell Types and Functions
689
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
689
Inflammation
52.0K
Overview
52.0K
Inflammatory Response
1.7K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
1.7K
