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. 2021 Aug 16;10:e68484. doi: 10.7554/eLife.68484

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.

Figure 3.

Figure 3—figure supplement 1. Ly49H + and Ly49H- hypoxia-inducible factor-1α (HIF1α) KO natural killer (NK) cells have similar activation compared to Flox controls.

Figure 3—figure supplement 1.

(A–C) 1αKO or Flox mice infected with murine cytomegalovirus (MCMV) received a dose of 50K plaque forming unit (pfu) and analyzed as indicated. (A) Histogram (left) and quantification of frequency (right) represent CCL3 expression in NK cells at day 3 post MCMV infection. Data are from two independent experiments with four mice per group. (B) Histograms (left) and quantification of (right) of CD69 MFI on Ly49H+ and Ly49H- NK cells at day 3 post MCMV infection. Data are from two independent experiments with three mice per group. (C) Representative histograms (left) and quantification of MFI (right) of Granzyme B (GrzmB) expression in Ly49H+ and Ly49H- NK cells at day 3 post MCMV infection. Data are from two independent experiments with three mice per group. Data depict mean ± SEM, with each data set containing data indicated number of mice per group from independent experiments. Statistical significance indicated by n.s., no significant difference, *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001.