(A) Analyses of RORγt and KLRG1 expression by YFP+ (Cre-on) and YFP− (Cre-off) fractions of CD45+CD3−CD19− lamina propria cells from the indicated mouse strains. Numbers represent percent cells in quadrant.
(B) GATA3 expression by intestinal YFP+ (Cre-on) RORγt+ ILCs of Gata3+/+ (grey) or Gata3f/f (open) animals.
(C) Expression of GATA3 and KLRG1 by YFP+ (Cre-on) and YFP− (Cre-off) fractions of CD45+CD3−CD19− intestinal lamina propria cells from the indicated mouse strains. Numbers represent percent cells in gate.
(D,E) Percentage (± SD; n=4) of KLRG1+YFP+ cells (D) and of YFP+ cells (E) among CD45+CD3−CD19− lamina propria lymphocytes from the indicated mice.
(F) Lamina propria lymphocytes from the indicated mouse strains were stimulated for 4 h with PMA and ionomycin. IL-5 and IL-13 production was analyzed by intracellular cytokine staining and flow cytometry analysis of electronically gated CD45+CD3−CD19− CD90+ lamina propria lymphocytes. Numbers indicate percent cells in quadrant.
(G) Highly purified YFP− ILC2 were cultured on mitotically inactivated OP9 feeder cells in the presence of IL-2, IL-7 and 4-OH tamoxifen. After 7 days, cells were analyzed for expression of YFP and KLRG1. Numbers represent percentage of cells in the indicated gates.
(H) Expression of Sca1 and YFP among Lin− cells of the bone marrow from the indicated mouse strains.
(I) Expression of CD25 and Sca1 by Lin− bone marrow cells. Numbers indicate percentage of cells in quadrant. The lower panel shows the expression of YFP (Cre-on) in electronically gated Lin−CD25+Sca1hi bone marrow cells of the indicated mouse strains. Numbers indicate percentage of YFP-positive cells.
(J) Highly purified YFP+ ILC2P were cultured on mitotically inactivated OP9 feeder cells in the presence of IL-2, IL-7 and 4-OH tamoxifen. After 7 days, the cells were analyzed for expression of YFP and KLRG1. Numbers represent percentage of cells in quadrants.
All data are representative of at least two independent experiments. *** p ≤ 0.001, n.s.: not statistically significant. See also Figure S5.