ILT-7/CD85g

ILT-7, also designated CD85g or LILRA4, is a human LILR family receptor whose expression is highly selective for plasmacytoid dendritic cells, with additional reports in basophils. The molecule carries Ig-like extracellular domains and a short cytoplasmic tail, and cross-linking has been reported to inhibit TLR9-driven production of type I interferon in plasmacytoid dendritic cells. Because pDCs generate abundant IFN-alpha in autoimmune conditions such as psoriasis and lupus, ILT-7 is studied as a pDC-specific regulatory receptor. Its selective expression also makes ILT-7 a standard flow cytometric marker for identifying and isolating plasmacytoid dendritic cells.