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. 2020 Jun 29;9:e56720. doi: 10.7554/eLife.56720

Figure 4. Evolution of inflammatory disease in Card14LSL-E138A/+ Rosa26CreERT2/+ mice over time.

Card14LSL-E138A/+Rosa26CreERT2/+ mice (Het) and Card14+/+ Rosa26CreERT2/+ controls (WT) were intraperitoneally injected with tamoxifen on days 0, 1 and 2. Mice were sacrificed and tissues analysed at 5d or 1 m following the first tamoxifen injection. (A) The backs of the ears were photographed. Photos shown are representative of numerous mice. (B) Epidermal thickness of ear and skin was measured from H and E stained tissue sections. Data shown are a pool of 14 independent experiments. (C) Flow cytometry was performed on ear and skin. Ear: data pooled from 6 independent experiments: WT, n = 31; Het 5d, n = 22; Het 1 m, n = 13. Skin: data pooled from 9 independent experiments: WT, n = 43; Het 5d, n = 32; Het 1 m, n = 18. Note: FACS data for d5 are the same as that shown in Figure 1F (D) Serum was collected and cytokine concentrations analysed by immunoplex array. Serum samples collected from 3 independent experiments. (E) Weight was monitored over time. Card14+/+ Rosa26CreERT2/+ (n = 5), Card14 LSL-E138A/+ Rosa26CreERT2/+ (n = 6). For each day, differences between groups analysed by Student’s t-test. Data collected from a mixture of male and female mice. (B-D) Differences between WT, Het 5d, and Het 1 m were analysed by one-way ANOVA. *, p<0.05; **, p<0.01; ***, p<0.001; ****, p<0.0001.

Figure 4.

Figure 4—figure supplement 1. Lack of adaptive immune cells does not alter long-term pathology induced by heterozygous ubiquitous expression of CARD14E138A.

Figure 4—figure supplement 1.

Eight-week old Card14+/+ Rosa26CreERT2/+Rag1+/+, Card14LSL-E138A/+ Rosa26CreERT2/+ Rag1+/+ and Card14LSL-E138A/+ Rosa26CreERT2/+ Rag1-/- mice were injected intraperitoneally with tamoxifen on days 0, 1 and 2. Mice were sacrificed and tissues analysed at 1 m after the first injection of tamoxifen. (A and E) Immunohistochemistry of the ear/back skin stained with S100A9 at 1 m. (B and F) Quantification of acanthosis (C and G) Quantification of dermal immune cell infiltration. (D and H) qRT-PCR analysis of the expression of the indicated genes in the ear/back skin. Fold changes were calculated by comparison with the Card14LSL-E138A/+ Rosa26CreERT2/+ Rag1+/+ mice group (I) Flow cytometry was performed on cells isolated from ears to characterise the immune cell infiltration at 1 m. Scale bar = 100 µm. Data in B, C, D, F, G and H pooled from 3 different experiments with n ≥ 4, data in I from 1 experiment with n ≥ 4. Differences between groups analysed by one-way ANOVA. *, p<0.05; **, p<0.01; ***, p<0.001; ****, p<0.0001.