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Related Concept Videos

B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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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...
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Diversity of Antigen Receptors01:28

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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...
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Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

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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.
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Hybridoma Technology01:31

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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.
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Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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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...
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Immunoprecipitation01:20

Immunoprecipitation

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Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
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Related Experiment Video

Updated: May 1, 2026

Generation of Discriminative Human Monoclonal Antibodies from Rare Antigen-specific B Cells Circulating in Blood
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Generation of Discriminative Human Monoclonal Antibodies from Rare Antigen-specific B Cells Circulating in Blood

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Immunogen design to focus the B-cell repertoire.

Quentin J Sattentau1

  • 1Sir William Dunn School of Pathology, University of Oxford, Oxford, UK.

Current Opinion in HIV and AIDS
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Designing immunogens based on the HIV-1 envelope glycoprotein is crucial for eliciting broadly neutralizing antibodies (bNAbs). Recent advances in structural biology and engineering are fueling the development of new vaccine candidates to combat HIV-1.

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Last Updated: May 1, 2026

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Area of Science:

  • Immunology
  • Virology
  • Structural Biology

Background:

  • Developing an effective HIV-1 vaccine remains a significant global health challenge.
  • Broadly neutralizing antibodies (bNAbs) are key targets for HIV-1 vaccine design.
  • Understanding antibody evolution against HIV-1 is critical for immunogen development.

Purpose of the Study:

  • To review recent advancements in designing HIV-1 envelope glycoprotein-based immunogens.
  • To explore strategies for eliciting broadly neutralizing antibodies (bNAbs) against HIV-1.
  • To synthesize current knowledge on antibody evolution and immunogen design.

Main Methods:

  • Integration of structural biology techniques and deep sequencing of B-cell lineages.
  • Utilizing cross-sectional and longitudinal studies to track antibody evolution.
  • Applying molecular modeling and protein/glycoprotein engineering for antigen design.

Main Results:

  • Structural biology and deep sequencing provide insights into antibody evolution.
  • New-generation viral envelope glycoproteins (Env)-based antigens are being engineered.
  • Advances facilitate the design of immunogens targeting bNAb epitopes.

Conclusions:

  • Conceptual challenges in eliciting HIV-1 bNAbs are being addressed.
  • Proof-of-principle for a vaccine inducing bNAbs is still under investigation.
  • Continued research in immunogen design holds promise for an effective HIV-1 vaccine.