Related Experiment Video
Updated: Mar 13, 2026
09:35
Analysis of Somatic Hypermutation in the JH4 intron of Germinal Center B cells from Mouse Peyer's Patches
Published on: April 20, 2021
7.3K
Diversify and conquer: Antibody feedback in the germinal center
Amalie Grenov1, Carola G Vinuesa1
1The Francis Crick Institute, London, UK.
Immunity
|March 11, 2026
Summary
High-affinity antibodies produced during an immune response can broaden the humoral response by promoting epitope diversification. This finding clarifies how antibody feedback shapes ongoing immune reactions.
Area of Science:
- Immunology
- Molecular Biology
Background:
- Pre-existing antibodies are known to limit naive B cell access to germinal centers.
- The precise mechanisms by which antibody feedback influences ongoing immune responses remain incompletely understood.
Purpose of the Study:
- To investigate how antibody feedback regulates the breadth of the humoral immune response.
- To elucidate the role of antigen binding by locally produced antibodies in shaping immune reactions.
Main Methods:
- Analysis of B cell dynamics within germinal centers.
- Assessment of antibody production and affinity maturation.
- Investigation of epitope recognition and diversification.
Main Results:
- Locally produced high-affinity antibodies bind to antigen.
- This antigen binding actively promotes epitope diversification.
- The diversification of recognized epitopes broadens the overall humoral immune response.
Conclusions:
- Antibody feedback, specifically through antigen binding by high-affinity antibodies, plays a crucial role in expanding the epitope targets of the humoral response.
- This mechanism contributes to a more comprehensive and effective immune defense.
Related Concept Videos
01:24B 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
01:28Diversity 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
01:22T 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
01:20Special Features of Adaptive Immunity
3.9K
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
3.9K
01:36Humoral Immune Responses
85.3K
Overview
85.3K
01:31Hybridoma Technology
18.2K
Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
Hybridoma Selection
Commonly used fusion techniques — electroporation,...
Hybridoma Selection
Commonly used fusion techniques — electroporation,...
18.2K