IL-21 and IL-6 Are Critical for Different Aspects of B Cell Immunity and Redundantly Induce Optimal Follicular Helper CD4 T Cell (Tfh) Differentiation
2011

IL-21 and IL-6 in B Cell Immunity and Tfh Differentiation

publication 10 minutes Evidence: high

Author Information

Author(s): Danelle Eto, Christopher DiToro, Daniel Barnett, Burton Escobar, Tania C. Kageyama, Robin Yusuf, Isharat Crotty, Shane Crotty

Primary Institution: La Jolla Institute for Allergy and Immunology

Hypothesis

The study investigates the roles of IL-21 and IL-6 in T follicular helper (Tfh) differentiation and B cell immunity.

Conclusion

IL-21 and IL-6 are critical for optimal Tfh differentiation and B cell responses during viral infections.

Supporting Evidence

  • IL-21 and IL-6 collaborate in the acute T-dependent antiviral antibody response.
  • The combined absence of IL-6 and IL-21 resulted in reduced Tfh differentiation.
  • IL-21 is a potent inducer of plasma cell differentiation.
  • Absence of IL-21 led to a significant loss of germinal center B cells.

Takeaway

This study shows that two important proteins, IL-21 and IL-6, work together to help our immune system make the right kind of cells to fight infections.

Methodology

The study used mouse models to analyze the effects of IL-21 and IL-6 on Tfh differentiation and B cell immunity during viral infections.

Limitations

The study primarily focuses on mouse models, which may not fully replicate human immune responses.

Participant Demographics

C57BL/6 and IL-21−/− mice were used in the experiments.

Statistical Information

P-Value

p=0.0016

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0017739

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