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Related Concept Videos

B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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Related Experiment Video

Updated: Jun 2, 2026

Retroviral Overexpression of CXCR4 on Murine B-1a Cells and Adoptive Transfer for Targeted B-1a Cell Migration to the Bone Marrow and IgM Production
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Interferon-alpha triggers B cell effector 1 (Be1) commitment.

Marie-Ghislaine de Goër de Herve1, Deniz Durali, Bamory Dembele

  • 1INSERM U-1012 and Université Paris-Sud, Bicêtre, France.

Plos One
|May 12, 2011
PubMed
Summary

Type-I interferons (IFN-α) initiate B-cell polarization towards a pro-inflammatory Th-1-like state (Be1). This involves signaling cascades that prime B-cells for IFN-γ and IL-12 responsiveness, potentially contributing to autoimmune diseases.

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Studying Organelle Dynamics in B Cells During Immune Synapse Formation
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Studying Organelle Dynamics in B Cells During Immune Synapse Formation

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Development and Validation of an Ultrasensitive Single Molecule Array Digital Enzyme-linked Immunosorbent Assay for Human Interferon-α
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Published on: June 14, 2018

Studying Organelle Dynamics in B Cells During Immune Synapse Formation
15:39

Studying Organelle Dynamics in B Cells During Immune Synapse Formation

Published on: June 1, 2019

Area of Science:

  • Immunology
  • Autoimmune Diseases
  • Cellular Signaling

Background:

  • B-cells contribute to autoimmune pathogenesis via auto-antibodies and cytokine production.
  • B-cell functional heterogeneity in cytokine production is poorly understood.
  • B-cells differentiate into Th-1-like (Be1) and Th-2-like (Be2) effector cells, with IL-12 and IFN-γ key for Be1 polarization.

Purpose of the Study:

  • To elucidate the mechanisms governing B-cell subset functional heterogeneity, specifically Be1 polarization.
  • To identify the initial trigger for Be1 commitment in naive B-cells.
  • To investigate the role of type-I interferons in initiating B-cell polarization.

Main Methods:

  • Investigated signaling cascades in resting human naive B-cells upon IFN-α stimulation.
  • Assessed the involvement of STAT4 and T-bet, key IFN-γ gene imprinting factors.
  • Evaluated the priming effect of IFN-α on IFN-γ production and IL-12 responsiveness.

Main Results:

  • IFN-α triggers a signaling cascade in naive B-cells involving STAT4 and T-bet.
  • IFN-α primes naive B-cells for enhanced IFN-γ production and increased IL-12 responsiveness.
  • IFN-γ further promotes Be1 polarization by re-inducing T-bet and up-regulating IL-12Rβ2.

Conclusions:

  • IFN-α, IFN-γ, and IL-12 act in concert to polarize naive B-cells towards the Be1 phenotype.
  • Type-I interferons initiate a pathway that primes B-cells for pro-inflammatory cytokine production.
  • These findings offer insights into how type-I interferons may promote autoimmunity.