First Author | Martins GA | Year | 2006 |
Journal | Nat Immunol | Volume | 7 |
Issue | 5 | Pages | 457-65 |
PubMed ID | 16565721 | Mgi Jnum | J:112556 |
Mgi Id | MGI:3662777 | Doi | 10.1038/ni1320 |
Citation | Martins GA, et al. (2006) Transcriptional repressor Blimp-1 regulates T cell homeostasis and function. Nat Immunol 7(5):457-65 |
abstractText | The B lymphocyte-induced maturation protein 1 (Blimp-1) transcriptional repressor is required for terminal differentiation of B lymphocytes. Here we document a function for Blimp-1 in the T cell lineage. Blimp-1-deficient thymocytes showed decreased survival and Blimp-1-deficient mice had more peripheral effector T cells. Mice lacking Blimp-1 developed severe colitis as early as 6 weeks of age, and Blimp-1-deficient regulatory T cells were defective in blocking the development of colitis. Blimp-1 mRNA expression increased substantially in response to T cell receptor stimulation. Compared with wild-type CD4(+) T cells, Blimp-1-deficient CD4(+) T cells proliferated more and produced excess interleukin 2 and interferon-gamma but reduced interleukin 10 after T cell receptor stimulation. These results emphasize a crucial function for Blimp-1 in controlling T cell homeostasis and activation. |