CARMA1 controls Th2 cell-specific cytokine expression through regulating JunB and GATA3 transcription factors

Marzenna Blonska, Donghyun Joo, Patrick A. Zweidler-McKay, Qingyu Zhao, Xin Lin

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

The scaffold protein CARMA1 is required for the TCR-induced lymphocyte activation. In this study, we show that CARMA1 also plays an essential role in T cell differentiation. We have found that the adoptive transfer of bone marrow cells expressing constitutively active CARMA1 results in lung inflammation, eosinophilia, and elevated levels of IL-4, IL-5, and IL-10 in recipient mice. In contrast, CARMA1-deficient T cells are defective in TCR-induced expression of Th2 cytokines, suggesting that CARMA1 preferentially directs Th2 differentiation. The impaired cytokine production is due to reduced expression of JunB and GATA3 transcription factors. CARMA1 deficiency affects JunB stability resulting in its enhanced ubiquitination and degradation. In contrast, TCR-dependent induction of GATA3 is suppressed at the transcriptional level. We also found that supplementation with IL-4 partially restored GATA3 expression in CARMA1-deficient CD4 + splenocytes and subsequently production of GATA3- dependent cytokines IL-5 and IL-13. Therefore, our work provides the mechanism by which CARMA1 regulates Th2 cell differentiation.

Original languageEnglish (US)
Pages (from-to)3160-3168
Number of pages9
JournalJournal of Immunology
Volume188
Issue number7
DOIs
StatePublished - Apr 1 2012
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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