| First Author | Cohen SB | Year | 2015 |
| Journal | J Immunol | Volume | 194 |
| Issue | 1 | Pages | 210-22 |
| PubMed ID | 25416805 | Mgi Jnum | J:230698 |
| Mgi Id | MGI:5763551 | Doi | 10.4049/jimmunol.1402453 |
| Citation | Cohen SB, et al. (2015) Beta-catenin signaling drives differentiation and proinflammatory function of IRF8-dependent dendritic cells. J Immunol 194(1):210-22 |
| abstractText | Beta-catenin signaling has recently been tied to the emergence of tolerogenic dendritic cells (DCs). In this article, we demonstrate a novel role for beta-catenin in directing DC subset development through IFN regulatory factor 8 (IRF8) activation. We found that splenic DC precursors express beta-catenin, and DCs from mice with CD11c-specific constitutive beta-catenin activation upregulated IRF8 through targeting of the Irf8 promoter, leading to in vivo expansion of IRF8-dependent CD8a+, plasmacytoid, and CD103+ CD11b2 DCs. beta-catenin-stabilized CD8a+ DCs secreted elevated IL-12 upon in vitro microbial stimulation, and pharmacological beta-catenin inhibition blocked this response in wild-type cells. Upon infections with Toxoplasma gondii and vaccinia virus, mice with stabilized DC beta-catenin displayed abnormally high Th1 and CD8+ T lymphocyte responses, respectively. Collectively, these results reveal a novel and unexpected function for beta-catenin in programming DC differentiation toward subsets that orchestrate proinflammatory immunity to infection. |
