alexa Dysregulation of T lymphocyte function in itchy mice: a role for Itch in TH2 differentiation
Immunology

Immunology

Immunome Research

Author(s): Fang D, Elly C, Gao B, Fang N, Altman Y

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Itch is an E3 ubiquitin ligase that is disrupted in nonagouti-lethal or itchy mice. Itch deficiency leads to severe immune and inflammatory disorders and constant itching of the skin. Here we show that Itchminus sign/minus sign T cells show an activated phenotype and enhanced proliferation. Production of the type 2 T helper (TH2) cell cytokines interleukin 4 (IL-4) and IL-5 by Itchminus sign/minus sign T cells was augmented upon stimulation, and the TH2-dependent serum concentrations of immunoglobulin G1 (IgG1) and IgE in itchy mice were also increased. Molecularly, Itch associated with and induced ubiquitination of JunB, a transcription factor that is involved in TH2 differentiation. These results provide a molecular link between Itch deficiency and the aberrant activation of immune responses in itchy mice.

This article was published in Nat Immunol and referenced in Immunome Research

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