p-STAT5 binds CISH, SOCS1 and SOCS2 gene
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Interleukin-7 (IL7) up-regulates Cytokine-inducible SH2-containing protein (CISH), Suppressor of cytokine signaling 1(SOCS1), Suppressor of cytokine signaling 2(SOCS2) and Suppressor of cytokine signaling 3 (SOCS3) mRNA transcripts in primary human CD8 T cells. IL7 induces CISH and SOCS1-3 transcripts via the JAK/STAT5 signaling pathway (Ghazawi et al. 2016).<br>Signal transducer and activator of transcription 5A (STAT5A) and Signal transducer and activator of transcription 5B (STAT5B) dimers bind to similar core gamma-interferon activated sequence (GAS) motifs (Soldaini et al., 2000). STAT5 also form homo- and hetero-tetramers with distinct or expanded DNA-binding properties. This is a black box event because apart of the mentioned here genes could be another subset of genes up or downregulated by STAT5. Genes that are regulated by STAT5 include Interleukin-2 receptor alpha (IL2RA) (John et al. 1996), TNFSF11 (RANKL), Connexin-26 (GJB2) and Cyclin D1 (Hennighausen & Robinson, 2005). A comprehensive listing of hepatic STAT5B regulated genes is available from microarray/STAT5B knockout mice (Clodfelter et al. 2006), and similarly for STAT5-dependent genes regulated by the GH receptor (Rowland et al. 2005, Barclay et al. 2011).
白介素-7(IL7)上调人原代CD8 T细胞中细胞因子诱导的SH2结构域蛋白(CISH)、细胞因子信号通路抑制因子1(SOCS1)、细胞因子信号通路抑制因子2(SOCS2)以及细胞因子信号通路抑制因子3(SOCS3)的mRNA转录本。IL7通过JAK/STAT5信号通路诱导CISH和SOCS1-3转录本(Ghazawi等,2016年)。转录因子和转录激活因子5A(STAT5A)和转录因子和转录激活因子5B(STAT5B)二聚体结合于类似的核心干扰素γ激活序列(GAS)基序(Soldaini等,2000年)。STAT5还可以形成同源和异源四聚体,具有不同的或扩展的DNA结合特性。这是一个黑盒事件,因为除了所提及的基因外,STAT5可能还调控其他上调或下调的基因子集。由STAT5调控的基因包括白介素-2受体α(IL2RA)(John等,1996年)、TNFSF11(RANKL)、连接蛋白-26(GJB2)和细胞周期蛋白D1(Hennighausen & Robinson,2005年)。肝STAT5B调控基因的详尽列表可从微阵列/STAT5B敲除小鼠中获得(Clodfelter等,2006年),同样适用于由生长激素受体调控的STAT5依赖性基因(Rowland等,2005年,Barclay等,2011年)。
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