Fig 4. CD127^pos ILC2 express a high level of CD25, but inflamed human liver supernatant contains minimal IL-2 and IL-7.

(A) The CD45^pos CD3^neg lineage^neg CD127^pos CRTH2^pos ILC2 subset was gated and expression of the IL-2 receptor α-chain, CD25, was analysed. CD25 representative overlay and summary data in normal and diseased livers is shown. (** = p<0.01 by Mann Whitney test). In the histogram overlay the dotted line represents isotype staining and the shaded histogram reports CD25 staining. (B) Human inflamed liver supernatant was analysed for IL-2, IL-7, IL-9 and IFN-γ. The secretion of cytokines by normal and inflamed human liver tissue was analysed by luminex of 24-hour liver tissue supernatants prepared for 1g of tissue/1ml culture medium. (C) IL-33 production by human liver tissue (Normal and diseased) and (D) IL-33 production by Primary human biliary epithelial (BEC). IL-33 in 24-hour supernatants generated by 1g liver tissue/1ml medium or BEC cells unstimulated, stimulated with IFN-γ and TNF-α or with lipopolysaccharide (LPS) was analysed by ELISA. Summary data are median ± Interquartile range.