对人类天真和记忆B细胞子组的转录基因组-蛋白质组分析揭示了同型和子类特定的表型
Jana Koers1, Arie J Hoogendijk1, Simon Tol1
1Sanquin Research, and Landsteiner Laboratory, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands.
European journal of immunology
|March 12, 2026
概括
人类B细胞产生9种抗体同型,对免疫和疫苗至关重要. 这项研究揭示了IgG4切换B细胞的独特分子概况,使其与其他B细胞类型区别开来.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- B细胞产生各种抗体异型,对于病原体防御和疫苗接种至关重要.
- 虽然效应器功能因异型而异,但同型定义的B细胞子集之间的详细分子差异仍未得到充分研究.
- 了解这些差异是理解适应性免疫的关键.
研究的目的:
- 定义人类同型定义的B细胞子集的分子身份.
- 根据它们的抗体同型,研究纯粹和记忆B细胞 (MBCs) 之间的表型变异.
- 为了识别区分这些子集的独特分子标记.
主要方法:
- 蛋白质组学和转录组学是在仔细隔离的人类天真和记忆B细胞种群上进行的.
- 同型定义的群体包括原始B细胞和表达IgM,IgA1,IgA2,IgG1,IgG2,IgG3和IgG4的MBC.
- 进行了mRNA和蛋白质表达数据的综合分析.
主要成果:
- 蛋白质组和转录组分析揭示了同型定义的B细胞子集的独特分子形状,与分化状态相关.
- 与原始B细胞相比,IgG4切换的B细胞表现出最明显的mRNA和蛋白质表达特征.
- 转换IgG4的B细胞显示出细胞因子和Fc受体的独特表达,高IgE编码mRNA,以及SDR16C5.5的上调调节.
结论:
- 这项研究为同型定义的人类B细胞子集提供了分子定义.
- 转换IgG4的B细胞具有独特的表型特征,使其与其他B细胞群区分开来.
- 这些发现有助于更深入地了解B细胞异质性和人类免疫中的功能.
更多相关视频
08:26The Isolation, Differentiation, and Quantification of Human Antibody-secreting B Cells from Blood: ELISpot as a Functional Readout of Humoral Immunity
Published on: December 14, 2016
16.1K
08:59T and B Cell Receptor Immune Repertoire Analysis using Next-generation Sequencing
Published on: January 12, 2021
9.0K
相关概念视频
B Cell Activation and Differentiation
17.7K
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...
17.7K
Cells of the Adaptive Immune Response
9.8K
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
9.8K
T Cell Activation and Clonal Selection
17.0K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
17.0K
Diversity of Antigen Receptors
2.0K
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
2.0K
