[PDF][PDF] E3 ligase VHL promotes group 2 innate lymphoid cell maturation and function via glycolysis inhibition and induction of interleukin-33 receptor

Q Li, D Li, X Zhang, Q Wan, W Zhang, M Zheng, L Zou… - Immunity, 2018 - cell.com
Q Li, D Li, X Zhang, Q Wan, W Zhang, M Zheng, L Zou, C Elly, JH Lee, YC Liu
Immunity, 2018cell.com
Group 2 innate lymphoid cells (ILC2s) are a specialized subset of lymphoid effector cells that
are critically involved in allergic responses; however, the mechanisms of their regulation
remain unclear. We report that conditional deletion of the E3 ubiquitin ligase VHL in innate
lymphoid progenitors minimally affected early-stage bone marrow ILC2s but caused a
selective and intrinsic decrease in mature ILC2 numbers in peripheral non-lymphoid tissues,
resulting in reduced type 2 immune responses. VHL deficiency caused the accumulation of …
Summary
Group 2 innate lymphoid cells (ILC2s) are a specialized subset of lymphoid effector cells that are critically involved in allergic responses; however, the mechanisms of their regulation remain unclear. We report that conditional deletion of the E3 ubiquitin ligase VHL in innate lymphoid progenitors minimally affected early-stage bone marrow ILC2s but caused a selective and intrinsic decrease in mature ILC2 numbers in peripheral non-lymphoid tissues, resulting in reduced type 2 immune responses. VHL deficiency caused the accumulation of hypoxia-inducible factor 1α (HIF1α) and attenuated interleukin-33 (IL-33) receptor ST2 expression, which was rectified by HIF1α ablation or inhibition. HIF1α-driven expression of the glycolytic enzyme pyruvate kinase M2 downmodulated ST2 expression via epigenetic modification and inhibited IL-33-induced ILC2 development. Our study indicates that the VHL-HIF-glycolysis axis is essential for the late-stage maturation and function of ILC2s via targeting IL-33-ST2 pathway.
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