Figure 3. Hypoxia-inducible factor-1α (HIF1α) is dispensable for natural killer (NK) cell effector function.
(A) Representative histograms (top) and quantification (bottom) of CD69 MFI on NK cells and frequency of KLRG1+ and IFNγ+ NK cells at day 1.5 post-infection (pi) of 1αKO or FL control mice. Data are from 2–3 independent experiments with 4–6 mice per group. (B) Representative histograms (top) and quantification (bottom) of CD69 and Granzyme B MFI (GrzmB) of NK cells, and frequency of KLRG1+ NK cells at day 3 pi. Data are from two independent experiments with four mice per group. (C) 1αKO or FL control mice were injected with PBS or Poly (I:C) then 3 days later 20 × 106 splenocytes at 1:1 ratio of CFSE-labeled MHCI-sufficient (CFSEHigh) and -deficient (CFSELow) were intravenously transferred into mice. MHC-deficient splenocyte elimination was measured 3 hr post-transfer by flow cytometry. Data are from three independent experiments with 3–4 mice per group. Data depict mean ± SEM, with each data set containing data indicated number of mice per group from independent experiments. Unpaired t-test was performed on (A, B) or one-way ANOVA (C). Statistical significance indicated by n.s., no significant difference; *p<0.05; **p<0.01; ***p<0.001; ****p<0.0001.