First Author | Zhan Y | Year | 2010 |
Journal | J Immunol | Volume | 185 |
Issue | 4 | Pages | 2125-33 |
PubMed ID | 20644172 | Mgi Jnum | J:162618 |
Mgi Id | MGI:4819423 | Doi | 10.4049/jimmunol.0903793 |
Citation | Zhan Y, et al. (2010) Resident and monocyte-derived dendritic cells become dominant IL-12 producers under different conditions and signaling pathways. J Immunol 185(4):2125-33 |
abstractText | IL-12 is such a pivotal cytokine that it has been called the third signal for T cell activation, TCR engagement being the first and costimulation being the second. It has been generally viewed that the resident CD8(+) dendritic cell (DC) subset is the predominant IL-12-producing cell type. In this study, we found, although this is so under steady state conditions, under inflammatory conditions monocyte-derived DC (mDC) became a major cell type producing IL-12. Depletion of either type of DC resulted in reduced production of IL-12 in vivo. For CD8(+) DC, IL-12 production could be stimulated by various pathways viz. signaling through MyD88, Trif, or nucleotide-binding oligomerization domain (Nod)-like receptors. In contrast, for mDC, IL-12 production was mainly dependent on MyD88 signaling. Thus, conventional DCs and mDCs use different pathways to regulate IL-12 production. |