| First Author | Perez-Lloret J | Year | 2016 |
| Journal | Proc Natl Acad Sci U S A | Volume | 113 |
| Issue | 5 | Pages | E568-76 |
| PubMed ID | 26787865 | Mgi Jnum | J:229968 |
| Mgi Id | MGI:5755175 | Doi | 10.1073/pnas.1522287113 |
| Citation | Perez-Lloret J, et al. (2016) T-cell-intrinsic Tif1alpha/Trim24 regulates IL-1R expression on TH2 cells and TH2 cell-mediated airway allergy. Proc Natl Acad Sci U S A 113(5):E568-76 |
| abstractText | There is a paucity of new therapeutic targets to control allergic reactions and forestall the rising trend of allergic diseases. Although a variety of immune cells contribute to allergy, cytokine-secreting alphabeta(+)CD4(+) T-helper 2 (TH2) cells orchestrate the type-2-driven immune response in a large proportion of atopic asthmatics. To identify previously unidentified putative targets in pathogenic TH2 cells, we performed in silico analyses of recently published transcriptional data from a wide variety of pathogenic TH cells [Okoye IS, et al. (2014) Proc Natl Acad Sci USA 111(30):E3081-E3090] and identified that transcription intermediary factor 1 regulator-alpha (Tif1alpha)/tripartite motif-containing 24 (Trim24) was predicted to be active in house dust mite (HDM)- and helminth-elicited Il4(gfp+)alphabeta(+)CD4(+) TH2 cells but not in TH1, TH17, or Treg cells. Testing this prediction, we restricted Trim24 deficiency to T cells by using a mixed bone marrow chimera system and found that T-cell-intrinsic Trim24 is essential for HDM-mediated airway allergy and antihelminth immunity. Mechanistically, HDM-elicited Trim24(-/-) T cells have reduced expression of many TH2 cytokines and chemokines and were predicted to have compromised IL-1-regulated signaling. Following this prediction, we found that Trim24(-/-) T cells have reduced IL-1 receptor (IL-1R) expression, are refractory to IL-1beta-mediated activation in vitro and in vivo, and fail to respond to IL-1beta-exacerbated airway allergy. Collectively, these data identify a previously unappreciated Trim24-dependent requirement for IL-1R expression on TH2 cells and an important nonredundant role for T-cell-intrinsic Trim24 in TH2-mediated allergy and antihelminth immunity. |
