Journal: Cancer Immunology Research
Article Title: Phenotypic and Functional Activation of Hyporesponsive KIRnegNKG2Aneg Human NK-Cell Precursors Requires IL12p70 Provided by Poly(I:C)-Matured Monocyte-Derived Dendritic Cells
doi: 10.1158/2326-6066.cir-14-0054-t
Figure Lengend Snippet: Figure 2. Soluble IL12p70 from poly(I:C)-matured moDC preferentially induces NKG2A but not KIR on KIRnegNKG2Aneg NK cells. A–D, freshly isolated NK cells were sorted for the absence of KIR and NKG2A receptors (KIRnegNKG2Aneg), then cocultured for 6 days either alone (media) or with LCcyto, moDCcyto, moDCLPS, or moDCpoly, but without any additional cytokines in culture. A neutralizing antibody to soluble IL12p70 (þanti-IL12) or its isotype control (þIgG1) was added to moDCpoly cocultures. After 6 days of stimulation, these KIRnegNKG2Aneg NK cells were assayed for NKG2A (A and B) or KIR (C and D) expression, with representative flow cytometric contour plots from the same experimental sample shown. Bar graphs depict pooled phenotypic data from all experiments (mean SD). Asterisks above each error bar refer to the statistical difference between that condition and the unstimulated dþ6 KIRnegNKG2Aneg NK cells (media), whereas statistical notations above the brackets refer to the indicated comparisons between conditions. E and F, CTV-labeled KIRnegNKG2Aneg cells were cocultured for 6 days either alone (media) or with moDCpoly to correlate proliferation with NKG2A (E) or KIR (F) induction. Proliferation was measured by the dilution in fluorescent intensity of CTV. One representative experiment out of three is shown. , P ¼ 0.001–0.01; , P < 0.001; , P 0.0001; ns, not statistically significant.
Article Snippet: In selected NK:DC coculture experiments, soluble IL12p70 was blocked using a neutralizing anti-IL12p70 mAb (clone 24910; R&D Systems).
Techniques: Isolation, Control, Expressing, Labeling