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Related Concept Videos

Humoral Immune Responses01:36

Humoral Immune Responses

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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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Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
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Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
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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.
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Updated: Nov 19, 2025

Single-cell Screening Method for the Selection and Recovery of Antibodies with Desired Specificities from Enriched Human Memory B Cell Populations
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Single-cell Screening Method for the Selection and Recovery of Antibodies with Desired Specificities from Enriched Human Memory B Cell Populations

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Rationalizing Random Walks: Replicating Protective Antibody Trajectories.

Jennifer L Remmel1, Margaret E Ackerman2

  • 1Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.

Trends in Immunology
|January 30, 2021
PubMed
Summary
This summary is machine-generated.

Reverse vaccinology 2.0 seeks to replicate antibody responses, like those neutralizing human immunodeficiency virus-1. However, the inherent randomness of immune responses must be considered when defining template antibody responses for vaccine development.

Keywords:
antibody engineeringantibody selectiondirected evolutiongermline targetingrational vaccine designreverse vaccinology

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Area of Science:

  • Immunology
  • Vaccinology
  • Molecular Biology

Background:

  • Reverse vaccinology aims to design vaccines by identifying antigens recognized by the immune system.
  • Broadly neutralizing antibodies (bNAbs) are crucial targets for human immunodeficiency virus-1 (HIV-1) vaccine development.
  • Antibody responses exhibit convergence across individuals, suggesting replicability.

Purpose of the Study:

  • To explore the feasibility of rationally reproducing specific antibody responses, such as HIV-1 bNAbs, using a 'Reverse Vaccinology 2.0' approach.
  • To investigate the role of stochasticity in humoral immunity and antibody selection.
  • To evaluate the potential consequences of over-defining template antibody responses in vaccine design.

Main Methods:

  • Drawing parallels with in vitro antibody engineering and directed evolution.
  • Analyzing the principles of germline-targeting vaccine approaches.
  • Considering the stochastic nature of antibody selection and immune response variability.

Main Results:

  • The diversity and stochasticity inherent in humoral immunity pose challenges to replicating specific antibody responses.
  • Over-defining a template antibody response may have unintended consequences.
  • The probability of replicating a desired antibody response is influenced by the randomness of the immune system.

Conclusions:

  • Prospective definition of template antibody responses must account for the inherent randomness of humoral immunity.
  • Balancing rational design with the stochastic nature of immune responses is critical for successful vaccine development.
  • Further research is needed to understand and harness the interplay between deterministic and stochastic factors in vaccine design.