| First Author | Goubau D | Year | 2009 |
| Journal | Eur J Immunol | Volume | 39 |
| Issue | 2 | Pages | 527-40 |
| PubMed ID | 19152337 | Mgi Jnum | J:144488 |
| Mgi Id | MGI:3831031 | Doi | 10.1002/eji.200838832 |
| Citation | Goubau D, et al. (2009) Transcriptional re-programming of primary macrophages reveals distinct apoptotic and anti-tumoral functions of IRF-3 and IRF-7. Eur J Immunol 39(2):527-40 |
| abstractText | The immunoregulatory transcriptional modulators - IFN-regulatory factor (IRF)-3 and IRF-7 - possess similar structural features but distinct gene-regulatory potentials. For example, adenovirus-mediated transduction of the constitutively active form of IRF-3 triggered cell death in primary human MPhi, whereas expression of active IRF-7 induced a strong anti-tumoral activity in vitro. To further characterize target genes involved in these distinct cellular responses, transcriptional profiles of active IRF-3- or IRF-7-transduced primary human MPhi were compared and used to direct further mechanistic studies. The pro-apoptotic BH3-only protein Noxa was identified as a primary IRF-3 target gene and an essential regulator of IRF-3, dsRNA and vesicular stomatitis virus-induced cell death. The critical role of IRF-7 and type I IFN production in increasing the immunostimulatory capacity of MPhi was also evaluated; IRF-7 increased the expression of a broad range of IFN-stimulated genes including immunomodulatory cytokines and genes involved in antigen processing and presentation. Furthermore, active IRF-7 augmented the cross-presentation capacity and tumoricidal activity of MPhi and led to an anti-tumor response against the B16 melanoma model in vivo. Altogether, these data further highlight the respective functions of IRF-3 and IRF-7 to program apoptotic, immune and anti-tumor responses. |
