自然杀手细胞功能遗传学和供体特异性抗体触发的微血管炎症
Matthias Diebold1, Hannes Vietzen2, Andreas Heinzel3
1Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria; Clinic for Transplantation Immunology and Nephrology, University Hospital Basel, University of Basel, Basel, Switzerland.
自然杀手 (NK) 细胞遗传学影响移植的拒绝. 一种特定的KLRC2基因变异独立预测了抗体介导排斥 (ABMR) 活性,但不是移植存活.
科学领域:
- 免疫学 免疫学 免疫学
- 移植科学 移植科学
- 遗传学 遗传学 是一个
背景情况:
- 抗体介导排斥 (ABMR) 是移植损失的主要原因.
- 自然杀手 (NK) 细胞和微血管炎症 (MVI) 参与了ABMR的发病.
- 在ABMR中基因决定的NK细胞功能的作用尚未完全理解.
研究的目的:
- 研究NK细胞功能的遗传变异对移植受体的ABMR发育和活性的影响.
- 确定NK细胞的遗传多态化和"失落的自我"是否预测ABMR和微血管炎症.
主要方法:
- 这项研究包括86名脏移植接受者,他们具有捐赠者特异性抗体.
- 进行了NK细胞功能多态 (FCGR3A,KLRC2,KLRK1) 的杀手免疫球蛋白类受体 (KIR) 类型和基因型鉴定.
- 进行了系统活检和NK细胞转录的分析.
主要成果:
- 50名患者表现出具有显著的MVI和升高的NK细胞转录的ABMR.
- "错过自我"和MVI之间没有发现任何关联.
- KLRC2^wt/wt基因型与较高的MVI得分 (P = .001) 和独立预测的ABMR活性 (OR,7.84;P = .001) 有显著的关联.
- NK细胞遗传学没有影响移植功能或生存.
结论:
- 一个特定的KLRC2功能多态是ABMR活动的独立决定因素.
- 其他研究的NK细胞基因多态性和"失踪自我"并没有对ABMR活性做出显著贡献.
- 影响NK细胞功能的遗传因素可能在ABMR病原发生中起作用,但不是整体移植结果.
更多相关视频
08:42Dextran Enhances the Lentiviral Transduction Efficiency of Murine and Human Primary NK Cells
Published on: January 15, 2018
05:24Two Flow Cytometric Approaches of NKG2D Ligand Surface Detection to Distinguish Stem Cells from Bulk Subpopulations in Acute Myeloid Leukemia
Published on: February 21, 2021
相关概念视频
Cytotoxic T Cells-mediated Immune Response
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...
Cell-mediated Immune Responses
Cells of the Innate Immune Response
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...
Immune Response Against Viral Pathogens
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...
Immune Surveillance by NK Cells and Phagocytes
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
