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Immunity. 2014 Mar 20;40(3):367-77. doi: 10.1016/j.immuni.2014.02.005. Epub 2014 Mar 13.

Transcription factor STAT3 and type I interferons are corepressive insulators for differentiation of follicular helper and T helper 1 cells.

Author information

1
Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA.
2
Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA; Howard Hughes Medical Institute, 4000 Jones Bridge Road, Chevy Chase, MD 20815-6789, USA.
3
Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Medicine (Rheumatology), Yale University School of Medicine, New Haven, CT 06520, USA. Electronic address: joseph.craft@yale.edu.

Abstract

Follicular helper T (Tfh) cells are required for the establishment of T-dependent B cell memory and high affinity antibody-secreting cells. We have revealed herein opposing roles for signal transducer and activator of transcription 3 (STAT3) and type I interferon (IFN) signaling in the differentiation of Tfh cells following viral infection. STAT3-deficient CD4(+) T cells had a profound defect in Tfh cell differentiation, accompanied by decreased germinal center (GC) B cells and antigen-specific antibody production during acute infection with lymphocytic choriomeningitis virus. STAT3-deficient Tfh cells had strikingly increased expression of a number of IFN-inducible genes, in addition to enhanced T-bet synthesis, thus adopting a T helper 1 (Th1) cell-like effector phenotype. Conversely, IFN-αβ receptor blockade restored Tfh and GC B cell phenotypes in mice containing STAT3-deficient CD4(+) T cells. These data suggest mutually repressive roles for STAT3 and type I IFN signaling pathways in the differentiation of Tfh cells following viral infection.

PMID:
24631156
PMCID:
PMC3992517
DOI:
10.1016/j.immuni.2014.02.005
[Indexed for MEDLINE]
Free PMC Article

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