致病性CD8 T细胞的反应是由中性粒细胞介导的皮肤莱什曼病的缺氧驱动的
bioRxiv : the preprint server for biology
|October 31, 2023
概括
皮肤莱什曼病的皮肤炎症驱动局部CD8T细胞反应. 皮肤病变中的缺氧和中性粒细胞促进细胞分解性CD8T细胞分化,影响疾病的严重程度.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 寄生虫学的寄生虫学
背景情况:
- 皮肤莱什曼病呈现出各种不同的临床结果,受寄生虫和宿主免疫反应的影响.
- 细胞分解性CD8 T细胞的反应对于调解利什曼病的发病过程至关重要,这种病因起源于淋巴结,但在局部起作用.
研究的目的:
- 研究皮肤炎症中的局部因素,这些因素在皮肤莱什曼病时诱导CD8T细胞的细胞分解功能.
- 探索缺氧和中性粒细胞招募在驱动CD8T细胞分化和皮肤病变中的效应器功能的作用.
主要方法:
- 分析CD8T细胞的反应,酶B的表达,以及Leishmania感染小鼠皮肤病变中的Blimp-1 (Prdm1) 转录因子.
- 研究缺氧和中性粒细胞存在对CD8T细胞分化和细胞分解功能的影响.
- 对皮肤莱什曼病患者病变中的缺氧转录特征和中性粒细胞透的检查.
主要成果:
- 细胞分解功能的标志物Granzyme B的表达受限于炎症皮肤病变中的CD8 T细胞,而不是淋巴结.
- 炎症皮肤内的缺氧被确定为Blimp-1表达的关键驱动因素,这对于细胞分解性CD8T细胞分化至关重要.
- 中性粒细胞对病变的招募加剧了缺氧,并在CD8 T细胞中增强了大酶B的表达.
- 皮肤莱什曼病患者的病变显示出与中性粒细胞存在相关的缺氧特征.
结论:
- 当地线索,特别是皮肤内的缺氧和中性粒细胞诱导的炎症,对于诱导皮肤莱什曼病中的细胞分解性CD8T细胞功能至关重要.
- 针对促进局部CD8T细胞分化的缺氧驱动途径,可能为皮肤莱什曼病提供治疗策略.
- 这些发现也可能与其他炎症性皮肤疾病有关,其中细胞分解性CD8 T细胞对疾病有贡献.
相关概念视频
01:27Cytotoxic T Cells-mediated Immune Response
933
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...
933
01:29Immune Response Against Viral Pathogens
798
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
798
01:40Cell-mediated Immune Responses
68.6K
Overview
68.6K
01:28Cells of the Innate Immune Response
1.7K
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...
1.7K