Fig 1: AML mice retain more OT-II cells and AML DCs promote IL-17A production. (A) Experimental outline of OT-II adoptive cell transfer. CD45.1+ AML (n=8) and WT (n=8) mice are injected intravenously with 200k naïve CD45.2+ OT-II cells on Day 0. 24 hours later mice were injected intraperitonealy with 200 µg whole OVA protein. 10 days later mice were sacrificed and spleens were harvested for flow cytometry analysis of remaining CD45.2+ OT-II cells. (B) Representative dot plots of spleen resident CD45.2+ OT-II cells by flow cytometry. Frequency of live ingle cells noted in the plots. (C) Summary bar charts of OT-II cell counts (left panel) and frequency of live single cells (right panel). Each symbol is an individual mouse and summary data collected from two experiments. AML (n=8) and WT (n=8). (D) Experimental outline of in vitro co-cultures of OT-II cells and cDCs. Naïve OT-II cells were magnetically sorted from spleen tissue using BioLegend MojoSort Mouse CD4 Naïve T Cell Isolation Kit. After magnetic sorting samples were verified for purity by flow cytometry. cDCs were magnetically isolated using BioLegend MojoSort Mouse CD11c+ beads. After magnetic sorting samples were verified by flow cytometry. OT-II cells were plated at 50k cells per well and cDCs were plated at 20k cells per well for five days in Th17 polarizing media using CellXVivo Mouse Th17 Cell Differentiation Kit CDK017 from R&D Systems. (E) Representative dot plots of IL-17A+ OT-II cells by flow cytometry. Frequency of CD4+ cells noted in the plots. (F) Summary bar charts of IL-17A+ CD4+ T cells from (E). Each symbol is an individual sample and summary data collected from four experiments. AML (n=8) and WT (n=7). * = P < 0.05; ** = P < 0.01; *** = P < 0.001.
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