國家衛生研究院 NHRI:Item 3990099045/9322
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    題名: MAP4K family kinases in immunity and inflammation
    作者: Chuang, HC;Wang, X;Tan, TH
    貢獻者: Immunology Research Center
    摘要: Abstract MAP kinase kinase kinase kinases (MAP4Ks) belong to the mammalian Ste20-like family of serine/threonine kinases. MAP4Ks including MAP4K1/HPK1, MAP4K2/GCK, MAP4K3/GLK, MAP4K4/HGK, MAP4K5/KHS, and MAP4K6/MINK have been reported to induce JNK activation through activating the MAP3K-MAP2K cascade. The physiological roles of MAP4Ks in immunity and inflammation are largely unknown until recent studies using biochemical approaches and knockout mice. Surprisingly, JNK is not the major target of MAP4Ks in immune cells; MAP4Ks regulate immune responses through novel targets. HPK1 inhibits T-cell receptor (TCR) signaling and B-cell receptor signaling via inducing phosphorylation/ubiquitination of SLP-76 and BLNK, respectively. GLK activates TCR signaling through phosphorylating/activating PKCθ. T-cell-mediated immune responses and Th17-mediated experimental autoimmune diseases are enhanced in HPK1 knockout mice but ameliorated in GLK knockout mice. Consistently, HPK1 levels are decreased in peripheral blood mononuclear cells and T cells from patients with psoriatic arthritis and systemic lupus erythematosus (SLE), respectively. Moreover, GLK levels are increased in T cells from patients with SLE, rheumatoid arthritis, or adult-onset Still's disease; the percentages of GLK-overexpression T cells are correlated with the disease activity. In addition, HGK phosphorylates and induces TRAF2 protein degradation, leading to negative regulation of IL-6 production in resting T cells. Loss of HGK in T cells results in spontaneous systemic inflammation and type 2 diabetes in mice. HGK is also involved in cancer cell migration. To date, the phenotypes of knockout mice for GCK, KHS, and MINK have not been reported; the roles of these three MAP4Ks in immune cell signaling are discussed in this review. Taken together, MAP4K family kinases play diverse roles in immune cell signaling, immune responses, and inflammation.
    日期: 2016-01
    關聯: Advances in Immunology. 2016 Jan;129:277-314.
    Link to: http://dx.doi.org/10.1016/bs.ai.2015.09.006
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000377183700007
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84951020022
    顯示於類別:[譚澤華] 期刊論文
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