Figure 4.
Flt3L mobilizes human CD172a− and CD172a+ pre-cDCs into the blood. (a and b) PBMCs from Flt3L-injected volunteers (n = 3; 25 µg/kg for seven consecutive days) were analyzed by flow cytometry before (day 0) and after Flt3L treatment (day 12) to assess the expansion of CD1c+ and CD141+ cDC subsets as well as CD172a−, CD172aint, and CD172a+ pre-cDC subsets in blood. Representative flow cytometry dot plots show CD1c+ cDCs (blue) and CD141+ cDCs (red; a) as well as CD172a− (red), CD172aint (green), and CD172a+ (blue; b) pre-cDC subsets (gating strategy in Fig. 1, a and c). Gate frequencies from parent population are shown. SSC, side scatter. (c) Representative histogram shows CD117 and HLA-DR expression on CD1c+ cDCs, CD141+ cDCs, CD172a− pre-cDCs, and CD172a+ pre-cDCs in one of the Flt3L-treated volunteers.
