新型单克隆抗体开发技术
最近开发了几种单克隆抗体技术,例如噬菌体展示、单 B 细胞培养、来自不同 B 细胞群的单细胞扩增和单浆细胞询问技术。 与传统的杂交瘤技术不同,较新的技术使用分子生物学技术通过 PCR 扩增抗体基因的重链和轻链,并通过重组技术在细菌或哺乳动物系统中产生。 新技术的优势之一是适用于多种动物,如兔子、美洲驼、鸡等实验室常见的实验动物。
这些变体通常是聚集体、脱酰胺产物、糖基化变体、氧化的氨基酸侧链,以及氨基和羧基末端氨基酸添加。 这些看似微小的结构变化会影响临床前稳定性和工艺优化以及治疗产品效力、生物利用度和免疫原性。 普遍接受的单克隆抗体工艺流纯化方法包括使用蛋白 A 捕获目标产物、洗脱、酸化以灭活潜在的哺乳动物病毒,然后进行离子色谱,首先使用阴离子珠,然后使用阳离子珠。
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Staff, Adis Insight. Bavituximab profile Last updated 27 January 2016
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