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    • 30. 发明授权
    • Astrocyte-specific transcription of human genes
    • 人类基因的星形胶质细胞特异性转录
    • US5627047A
    • 1997-05-06
    • US197463
    • 1994-02-16
    • Michael BrennerFrancois BesnardYoshihiro Nakatani
    • Michael BrennerFrancois BesnardYoshihiro Nakatani
    • C07K14/47C12N15/85C12N15/10C12N15/62
    • C12N15/85C07K14/47C07K14/4711C12N15/8509A01K2217/05A01K2227/10A01K2267/03A01K2267/0318C12N2830/008C12N2830/85
    • Three unique control DNA sequences of the glial fibrillary acidic (gfa) protein gene have been identified upstream of its basal promoter that are capable of regulating astrocyte-specific transcription of the human gene for glial fibrillary acidic protein (GFAP). One or more of those three regions alone or together with the SV40 early promoter and SV40 enhancer control expression of endogenous or heterologous protein in astrocytes. Transgenic animals expressing amyloid protein can be prepared and used as a model for evaluating Alzheimer's disease. Many heterologous proteins can be expressed in the astrocytes so as to take advantage of the growing list of astrocyte functions. Such proteins include hormones, growth factors, and their receptors. Examples include basic fibroblast growth factor (bFGF), acidic FGF (aFGF), platelet derived growth factor (PDGF), insulin like growth factors 1 and 2 (IGF-1, IGF-2), epidermal growth factor (EGF), transforming growth factors .beta.-1 and .beta.-2 (TGF.beta.1, TGF.beta.2), and S100.beta.; other examples totalled proteins encoded by oncogenes like myc, fos, and erb-a, ion channels, like the calcium channel and the potassium channel, and metabolic enzymes, especially ones involved in processing drugs or neurotransmitters; e.g., glutamine synthetase. Additionally, in each case, a dominant dysfunctional protein, an antisense RNA, or a ribozyme, all of which can inhibit the function or production of the protein, can be expressed in astrocytes.
    • 已经在其基础启动子的上游鉴定了胶质纤维酸性(gfa)蛋白基因的三个独特的对照DNA序列,其能够调节神经胶质纤维酸性蛋白(GFAP)的人类基因的星形胶质细胞特异性转录。 这三个区域中的一个或多个单独或与SV40早期启动子和SV40增强子一起控制内源或异源蛋白质在星形胶质细胞中的表达。 可以制备表达淀粉样蛋白的转基因动物并用作评价阿尔茨海默病的模型。 许多异源蛋白质可以在星形胶质细胞中表达,以便利用增长的星形胶质细胞功能列表。 这些蛋白质包括激素,生长因子及其受体。 实例包括碱性成纤维细胞生长因子(bFGF),酸性FGF(aFGF),血小板衍生生长因子(PDGF),胰岛素样生长因子1和2(IGF-1,IGF-2),表皮生长因子(EGF) 因子β-1和β-2(TGFβ1,TGFβ2)和S100β; 其他实例总共由癌基因如myc,fos和erb-a编码的蛋白质,离子通道,如钙通道和钾通道,以及代谢酶,特别是涉及加工药物或神经递质的代谢酶; 例如谷氨酰胺合成酶。 此外,在每种情况下,可以在星形胶质细胞中表达所有可以抑制蛋白质的功能或产生的显性功能障碍蛋白质,反义RNA或核酶。