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  • Title: The transcription factor GATA3 is critical for the development of all IL-7Rα-expressing innate lymphoid cells.
    Author: Yagi R, Zhong C, Northrup DL, Yu F, Bouladoux N, Spencer S, Hu G, Barron L, Sharma S, Nakayama T, Belkaid Y, Zhao K, Zhu J.
    Journal: Immunity; 2014 Mar 20; 40(3):378-88. PubMed ID: 24631153.
    Abstract:
    Innate lymphoid cells (ILCs) are critical in innate immune responses to pathogens and lymphoid organ development. Similar to CD4(+) T helper (Th) cell subsets, ILC subsets positive for interleukin-7 receptor α (IL-7Rα) produce distinct sets of effector cytokines. However, the molecular control of IL-7Rα(+) ILC development and maintenance is unclear. Here, we report that GATA3 was indispensable for the development of all IL-7Rα(+) ILC subsets and T cells but was not required for the development of classical natural killer cells. Conditionally Gata3-deficient mice had no lymph nodes and were susceptible to Citrobactor rodentium infection. After the ILCs had fully developed, GATA3 remained important for the maintenance and functions of ILC2s. Genome-wide gene expression analyses indicated that GATA3 regulated a similar set of cytokines and receptors in Th2 cells and ILC2s, but not in ILC3s. Thus, GATA3 plays parallel roles in regulating the development and functions of CD4(+) T cells and IL-7Rα(+) ILCs.
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