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    • 6. 发明公开
    • Methods for producing modified glycoproteins
    • 生产修饰糖蛋白的方法
    • EP2339013A1
    • 2011-06-29
    • EP10012383.5
    • 2001-06-27
    • GlycoFi, Inc.
    • Gerngross, Tilman U.
    • C12P21/00C12N9/10C12N9/24C12N1/14C12N5/10C12R1/645
    • C12P21/005C07K2319/04C07K2319/05C12N1/14C12N9/1048C12N9/2488C12N15/79C12N15/80C12N15/81C12Y302/01C12Y302/01113
    • Cell lines having genetically modified glycosylation pathways that allow them to carry out a sequence of enzymatic reactions, which mimic the processing of glycoproteins in humans, have been developed. Recombinant proteins expressed in these engineered hosts yield glycoproteins more similar, if not substantially identical to their human counterparts. The lower eukaryotes, which ordinarily produce high-mannose containing N-glycans, including unicellular and multicellular fungi are modified to produce N-glycans such as Man 5 GlcNAc 2 or other structures along human glycosylation pathways. This is achieved using a combination of engineering and/or selection of strains which: do not express certain enzymes which create the undesirable complex structures characteristic of the fungal glycoproteins, which express exogenous enzymes selected either to have optimal activity under the conditions present in the fungi where activity is desired, or which are targeted to an organelle where optimal activity is achieved, and combinations thereof wherein the genetically engineered eukaryote expresses multiple exogenous enzymes required to produce "human-like" glycoproteins.
    • 已经开发了具有遗传修饰的糖基化途径的细胞系,其使得它们能够进行模拟糖蛋白在人类中的加工的一系列酶促反应。 在这些工程宿主中表达的重组蛋白质产生的糖蛋白与它们的人类对应物如果不是基本相同,则它们更相似。 通常产生含高甘露糖的N-聚糖(包括单细胞和多细胞真菌)的低等真核生物被修饰以产生N-聚糖,例如Man5GlcNAc2或沿着人糖基化途径的其他结构。 这是通过工程和/或选择菌株来实现的:不表达某些产生真菌糖蛋白特征的不希望的复合结构的酶,所述真菌糖蛋白表达选择在真菌存在条件下具有最佳活性的外源酶 其中需要活性或靶向实现最佳活性的细胞器及其组合,其中所述基因工程真核生物表达产生“人样”糖蛋白所需的多种外源酶。