VHH D4 Recognizes a Surface Epitope of LSP-1 Specifically Expressed by mo-DC
(A) Expression levels (arbitrary units) of LSP1 in ascites DC; ascites macrophages; in vitro mo-DC and mo-Mac generated with M-CSF, IL-4, and TNFα; in vitro mo-DC generated with GM-CSF and IL-4; and blood CD14+ monocytes. Each dot represents an individual donor. Median is shown. Affymetrix data from dataset GSE102046.
(B) Normalized counts of LSP1 expression in selected human blood cells. RNA-seq data from the Human Cell Atlas (http://immunecellatlas.net).
(C and D) Monocytes were cultured with M-CSF, IL-4, and TNFα to generate DC (mo-DC) and macrophages (mo-Mac). Peripheral blood myeloid cells were also analyzed (monocytes and cDC2). Cells were stained with a commercial anti-LSP-1 antibody (C) or VHH D4 (D), with membrane permeabilization (intracellular) or not (surface). Gray shaded histograms are fluorescence-minus-one controls. Representative of five (blood) or six (in vitro-generated) individual donors.