Plasmacytoid dendritic cells (pDCs) produce type 1 interferon in response to viral infection and activation of endosomal Toll-like receptors. This paper shows that in psoriatic skin pDC TLR-9 is activated by an antimicrobial peptide in complex with endogenous human DNA that is released from dying cells.
- Roberto Lande
- Josh Gregorio
- Michel Gilliet