首页> 美国卫生研究院文献>International Journal of Molecular Sciences >In Vivo Glycan Engineering via the Mannosidase I Inhibitor (Kifunensine) Improves Efficacy of Rituximab Manufactured in Nicotiana benthamiana Plants
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In Vivo Glycan Engineering via the Mannosidase I Inhibitor (Kifunensine) Improves Efficacy of Rituximab Manufactured in Nicotiana benthamiana Plants

机译:通过甘露糖苷酶I抑制剂(Kifunensine)进行的体内糖工程提高了在本氏烟草植物中生产的利妥昔单抗的功效。

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摘要

N-glycosylation has been shown to affect the pharmacokinetic properties of several classes of biologics, including monoclonal antibodies, blood factors, and lysosomal enzymes. In the last two decades, N-glycan engineering has been employed to achieve a N-glycosylation profile that is either more consistent or aligned with a specific improved activity (i.e., effector function or serum half-life). In particular, attention has focused on engineering processes in vivo or in vitro to alter the structure of the N-glycosylation of the Fc region of anti-cancer monoclonal antibodies in order to increase antibody-dependent cell-mediated cytotoxicity (ADCC). Here, we applied the mannosidase I inhibitor kifunensine to the Nicotiana benthamiana transient expression platform to produce an afucosylated anti-CD20 antibody (rituximab). We determined the optimal concentration of kifunensine used in the infiltration solution, 0.375 µM, which was sufficient to produce exclusively oligomannose glycoforms, at a concentration 14 times lower than previously published levels. The resulting afucosylated rituximab revealed a 14-fold increase in ADCC activity targeting the lymphoma cell line Wil2-S when compared with rituximab produced in the absence of kifunensine. When applied to the cost-effective and scalable N. benthamiana transient expression platform, the use of kifunensine allows simple in-process glycan engineering without the need for transgenic hosts.
机译:N-糖基化已显示影响几种生物制剂的药代动力学特性,包括单克隆抗体,血液因子和溶酶体酶。在过去的二十年中,已采用N-聚糖工程技术来获得更一致的N-糖基化谱图,或者与特定的改善的活性(即效应子功能或血清半衰期)保持一致。特别地,注意力集中在体内或体外的工程过程上以改变抗癌单克隆抗体的Fc区的N-糖基化的结构,以增加抗体依赖性细胞介导的细胞毒性(ADCC)。在这里,我们将甘露糖苷酶I抑制剂kifunensine应用于本氏烟草瞬时表达平台,以产生岩藻糖基化的抗CD20抗体(利妥昔单抗)。我们确定了渗透溶液中使用的菊苣碱的最佳浓度为0.375 µM,该浓度足以生产仅为低聚甘露糖的糖型,其浓度比以前公布的浓度低14倍。与不存在基夫农碱的情况下产生的利妥昔单抗相比,所得的岩藻糖基化利妥昔单抗显示靶向淋巴瘤细胞系Wil2-S的ADCC活性增加了14倍。当将其应用于经济高效且可扩展的本氏烟草瞬时表达平台时,使用基夫农碱可以进行简单的过程中聚糖工程改造,而无需转基因宿主。

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