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. 2015 Mar;135(3):824-7.e3.
doi: 10.1016/j.jaci.2014.09.044. Epub 2014 Nov 12.

Vitamin D enhances production of soluble ST2, inhibiting the action of IL-33

Paul E Pfeffer  1 , Yin-Huai Chen  1 , Grzegorz Woszczek  1 , Nick C Matthews  1 , Elfy Chevretton  2 , Atul Gupta  3 , Sejal Saglani  4 , Andrew Bush  4 , Chris Corrigan  1 , David J Cousins  5 , Catherine M Hawrylowicz  6
Affiliations

Vitamin D enhances production of soluble ST2, inhibiting the action of IL-33

Paul E Pfeffer et al. J Allergy Clin Immunol. 2015 Mar.
No abstract available

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Figures

Fig E1
Fig E1
Further data on the effect of vitamin D on IL1RL1 expression. A and B, 1,25(OH)D3 (100 nmol/L) increases the expression of mRNA for CAMP in primary human eosinophils (Fig E1, A) and LUVA mast cells (Fig E1, B) but not mRNA for IL1RL1, as measured by using the Hs01073300 probe set in either cell type (n = 5 for both cell types). C and D, 25(OH)D3 (100 nmol/L) increases the expression of mRNA for both IL1RL1 and CAMP in HBECs (Fig E1, C) but not in CD4+ lymphocytes (Fig E1, D; Fig E1, C: n = 5; Fig E1, D: n = 3). *P ≤ .05 and **P ≤ .01.
Fig E2
Fig E2
Stimulation with IL-33 induces LUVA cell expression of CD54. A and B, IL-33 causes homotypic aggregation of LUVA cells (×10 magnification; Fig E2, A) associated with increased expression of CD54 (filled gray histogram, unstained; dashed line, isotype control; solid line, anti-CD54; Fig E2, B). C, Inhibition of IL-33–induced LUVA cell CD54 expression by the recombinant sST2-Fc chimera is not observed with an isotype Fc chimera (n = 3). D, IFN-γ plus IL-4–induced LUVA cell CD54 expression is not inhibited by addition of recombinant sST2-Fc chimera (n = 4). E, Effect of IL-33 on LUVA cell CD54 expression is not affected by addition of active vitamin D (100 nmol/L 1,25[OH]D3) directly to the LUVA cells (n = 4).
Fig 1
Fig 1
Vitamin D induces expression of sST2. A, Schematic for IL1RL1 mRNA: the 2 splice variants are differentially detected in PCR by using the probe sets Hs01073300 and Hs00249389. B-D,IL1RL1 transcripts detected by each probe set in cultures of HBECs at 24 hours (Fig 1, B; n = 7) and CD4 (Fig 1, C) and CD8 (Fig 1, D) lymphocytes at 7 days (n = 6). E-H, sST2 protein in culture supernatants of HBECs at 24 hours (Fig 1, E; n = 6), CD4 lymphocytes at 7 days (Fig 1, F; n = 6), and HBECs (Fig 1, G; n = 6) and HNECs at 24 hours (Fig 1, H; n = 5). ns, Not significant. *P ≤ .05, **P ≤ .01, and ***P ≤ .001.
Fig 2
Fig 2
Conditioned medium from vitamin D–treated epithelial cultures inhibits IL-33–induced expression of CD54 by LUVA cells. A, Induction of CD54 on LUVA cells above that of unstimulated cells by different stimuli in the presence of conditioned medium from control epithelial cell cultures (n = 7). B, Effect of IL-33 on CD54 expression is inhibited by recombinant sST2 (n = 6). C and D, CD54 expression on LUVA cells cultured with conditioned medium with or without cell stimulation. E, Percentage reduction in stimuli-induced CD54 expression on LUVA cells cultured with conditioned medium from 25(OH)D3-treated epithelial cell cultures compared with control epithelial cell cultures (n = 7). MFI, Mean fluorescence intensity; ns, not significant. *P ≤ .05, **P ≤ .01, ***P ≤ .001, and ****P ≤ .0001.
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References

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