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Modeling human adaptive immune responses with tonsil organoids.

Lisa E Wagar1,2, Ameen Salahudeen3,4, Christian M Constantz5

  • 1Department of Microbiology and Immunology, Stanford University, Stanford, CA, USA.

Nature Medicine
|January 12, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a human organoid system using tonsils to study adaptive immunity and vaccine responses. This innovative model accurately mimics germinal center reactions, offering a more reliable platform for vaccine development and testing than mouse models.

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Area of Science:

  • Immunology
  • Vaccinology
  • Organoid Technology

Background:

  • Current understanding of adaptive immunity relies heavily on mouse models, which often fail to predict human responses.
  • Existing methods for studying human adaptive immunity in vitro are limited, hindering vaccine development.

Purpose of the Study:

  • To develop a functional human organotypic system using tonsils to study adaptive immunity and vaccine responses.
  • To define the cellular components essential for vaccine-induced antibody production.
  • To evaluate the utility of this system for testing vaccine candidates and adjuvants.

Main Methods:

  • Utilized human tonsils to create an organotypic system that mimics germinal center features in vitro.
  • Assessed key immunological processes including antibody production, somatic hypermutation, and B cell differentiation.
  • Evaluated responses to influenza, rabies, and SARS-CoV-2 vaccines, as well as different adjuvants.

Main Results:

  • The system successfully recapitulated germinal center reactions, including antigen-specific antibody production and affinity maturation.
  • Identified essential cellular components for generating an influenza vaccine response.
  • Demonstrated the system's capability to assess humoral immune responses to various vaccines and adjuvants.

Conclusions:

  • The developed human organotypic system provides a novel platform for in-depth study of adaptive immunity mechanisms.
  • This system offers a more accurate and rapid method for testing human vaccine candidates and adjuvants compared to traditional mouse models.