Cytokine receptor signal transduction through Jak tyrosine kinases and Stat transcription factors

Cytokine receptor signal transduction through Jak tyrosine kinases and Stat transcription factors
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通过 Jak 酪氨酸激酶和 Stat 转录因子进行细胞因子受体信号转导

DOI:
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发表时间:
1997
期刊:
Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS)
影响因子:
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通讯作者:
P. Kovanen
P. Kovanen
中科院分区:
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文献类型:
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作者:
O. Silvennoinen;P. Saharinen;K. Paukku;K. Takaluoma;P. Kovanen

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细胞因子是造血细胞的细胞增殖和分化的主要调节剂,并且这些应答通过造血细胞因子受体的活化而起始。虽然受体胞内结构域缺乏任何激酶结构域,但细胞因子受体的活化导致快速诱导酪氨酸磷酸化。最近,细胞因子受体已被证明与细胞质Jak酪氨酸激酶家族的成员相关联并激活。Jak激酶的激活导致几种信号蛋白的磷酸化,从而将配体介导的受体刺激与细胞内信号通路的激活偶联。Jaks的最佳表征底物是Stat转录因子,其是细胞因子介导的基因应答的关键介质,特别是细胞因子应答特异性的中心决定因素。
Cytokines are the principal regulators of cell proliferation and differentiation of hematopoietic cells and these responses are initiated through activation of hematopoietic cytokine receptors. Although the receptor intracellular domains lack any kinase domains, activation of cytokine receptors lead to rapid induction of tyrosine phosphorylation. Recently, cytokine receptors have been shown to associate with and activate members of the cytoplasmic Jak tyrosine kinase family. Activation of Jak kinases leads to phosphorylation of several signaling proteins and thereby couples ligand‐mediated receptor stimulation to activation of intracellular signaling pathways. The best characterized substrates for Jaks are the Stat transcription factors, which are crucial mediators of cytokine‐mediated gene responses, and, particularly, central determinants for the specificity in cytokine responses.
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