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B cell responses to the gut microbiota.

Kevin W Ng1, Alvaro Hobbs1, Christopher Wichmann2

  • 1Laboratory of Lymphocyte Dynamics, The Rockefeller University, New York, NY, United States.

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|November 10, 2022
PubMed
Summary

Most human antibodies stem from unique mucosal B cell responses in the gut. This research explores how gut microbes influence these B cells and the antibodies they produce, impacting the gut

Keywords:
Affinity maturationAntibodyB cellGerminal centerIgAIntestinal microbiotaMucosal immunology

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Area of Science:

  • Immunology
  • Microbiology
  • Gastroenterology

Background:

  • Most human antibodies are produced by mucosal B cell responses, which differ significantly from responses to infection.
  • The gut microbiome plays a crucial role in shaping the immune system.

Purpose of the Study:

  • To explore the induction of B cell responses by gut microbiota.
  • To understand the development and maintenance of mucosal antibody-secreting cells.
  • To investigate the effects of mucosal antibodies on commensal bacteria.

Main Methods:

  • This study is a review and discussion of existing research.
  • It synthesizes findings on B cell responses in the intestinal context.

Main Results:

  • Microbiota can induce follicular B cell responses in the intestine.
  • Mucosal antibodies exert unique influences on commensal bacteria.
  • The development and maintenance of mucosal antibody-secreting cells are key aspects of gut immunity.

Conclusions:

  • The relationship between B cells and the gut microbiota is complex and nuanced.
  • This interplay is critical for maintaining a beneficial microbial ecosystem in the mammalian gut.
  • Further research is needed to fully elucidate these interactions.