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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Crystalline monoclonal antibodies for subcutaneous delivery
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Crystalline monoclonal antibodies for subcutaneous delivery

机译:用于皮下递送的结晶单克隆抗体

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摘要

Therapeutic applications for mAbs have increased dramatically in recent years, but the large quantities required for clinical efficacy have limited the options that might be used for administration and thus have placed certain limitations on the use of these agents. We present an approach that allows for s.c. delivery of a small volume of a highly concentrated form of mAbs. Batch crystallization of three Ab-based therapeutics, rituximab, trastuzumab, and infliximab, provided products in high yield, with no detectable alteration to these proteins and with full retention of their biological activity in vitro. Administration s.c. of a crystalline preparation resulted in a remarkably long pharmacokinetic serum profile and a dose-dependent inhibition of tumor growth in nude mice bearing BT-474 xenografts (human breast cancer cells) in vivo. Overall, this approach of generating high-concentration, low-viscosity crystalline preparations of therapeutic Abs should lead to improved ease of administration and patient compliance, thus providing new opportunities for the biotechnology industry. [References: 18]
机译:近年来,mAb的治疗应用急剧增加,但是临床疗效所需的大量药物限制了可能用于给药的选择,因此对这些药物的使用提出了一定的限制。我们提出了一种允许s.c.交付少量的高度浓缩形式的mAb。三种基于Ab的治疗药物(利妥昔单抗,曲妥珠单抗和英夫利昔单抗)的批量结晶提供了高收率的产品,这些蛋白没有可检测的变化,并且在体外完全保留了它们的生物学活性。行政管理在体内携带BT-474异种移植物(人乳腺癌细胞)的裸鼠中,结晶制剂的制备导致了显着长的药代动力学血清特征和对肿瘤生长的剂量依赖性抑制。总体而言,这种产生高浓度,低粘度治疗性Abs结晶制剂的方法应能改善给药的简易性和患者依从性,从而为生物技术行业提供新的机会。 [参考:18]

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