细胞因子产生B细胞及其在巨细胞动脉炎中分化巨细胞的能力
Jacoba C Graver1, William F Jiemy1, Dania H A Altulea1
1Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
巨细胞动脉炎 (GCA) 涉及B细胞产生细胞因子,通过激活巨细胞来促进炎症. 虽然这种B细胞细胞因子活性并不仅仅是GCA,但它支持针对疾病的向疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 类风湿病学 类风湿病学
- 细胞生物学 细胞生物学
背景情况:
- 巨细胞动脉炎 (GCA) 是一种炎症性疾病,B细胞存在于受影响的动脉中,但缺少疾病特异性的自身抗体.
- 这表明B细胞除了产生抗体之外还可能发挥作用,可能是通过细胞因子分泌.
研究的目的:
- 为了研究GCA患者炎症动脉和周围血液中的B细胞的细胞因子概况.
- 为了确定B细胞衍生的细胞因子是否可以影响巨细胞的行为,可能导致炎症.
主要方法:
- 免疫组织化学用于检测从GCA患者的动脉和大动脉活检的B细胞区域中的细胞因子.
- 来自GCA患者的外周血液单核细胞 (PBMC),多肌痛性风湿症患者和健康对照组的外周血液单核细胞 (PBMC) 被刺激进行B细胞细胞因子表达的流动细胞计分析.
- 在体外实验中评估了B细胞衍生的细胞因子对巨细胞表型倾斜的能力.
主要成果:
- 包括IL-6,GM-CSF,TNFα,IFNγ,LTβ和IL-10在内的细胞因子在GCA动脉的B细胞和B细胞丰富区域中被发现.
- 来自GCA患者和对照组的B细胞细胞因子在体外诱导了一种亲炎性巨细胞表型,其特征是增加IL-6,IL-1β,TNFα,IL-23,YKL-40和MMP-9.
- 与健康对照组相比,未接受过治疗的GCA患者表现出较高的IL-6+和TNFα+IL-6+B细胞频率,在治疗诱导的缓解后正常化. 红细胞沉积率升高与IL-6+TNFα+B细胞相关.
结论:
- B细胞积极产生细胞因子,可以促进亲炎性巨细胞表型.
- 虽然这种巨细胞歪曲能力并不仅限于GCA,但这些发现支持B细胞在GCA病原发生过程中通过细胞因子介导的重要作用.
- 这些结果为探索在GCA管理中针对B细胞的治疗策略提供了理由.
更多相关视频
10:35Assessment of Antibody-based Drugs Effects on Murine Bone Marrow and Peritoneal Macrophage Activation
Published on: December 26, 2017
11:48Isolation Protocol of Mouse Monocyte-derived Dendritic Cells and Their Subsequent In Vitro Activation with Tumor Immune Complexes
Published on: May 31, 2018
相关概念视频
B Cell Activation and Differentiation
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...
Differentiation of Common Myeloid Progenitor Cells
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Defense Against Bacterial Pathogens
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
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...
