Production and Purification of Shark and Camel Single-Domain Antibodies from Bacterial and Mammalian Cell Expression Systems.

Production and Purification of Shark and Camel Single-Domain Antibodies from Bacterial and Mammalian Cell Expression Systems.
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DOI:
10.1002/cpz1.459
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发表时间:
2022-06
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Current protocols
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单结构域抗体,包括鲨鱼免疫球蛋白新抗原受体的抗原结合可变结构域和骆驼科动物重链可变区,是最小的抗原识别结构域(~15 kDa),与常规抗体相比具有独特的特性。它们能够结合经典抗体难以接近的表位,并且还可用于治疗或诊断,或用于多结构域构建体、抗体-药物缀合物、免疫毒素或嵌合抗原受体治疗的模块化构件。该方案包含使用细菌和哺乳动物细胞表达系统纯化和验证两种单域抗体(一种鲨鱼和一种骆驼)的详细程序,这些抗体与SARS-CoV-2刺突蛋白的S2亚基结合。为高产、优质、高纯度的单结构域抗体的生产提供了全面的参考。
Single domain antibodies, including the antigen binding variable domains of the shark immunoglobulin new antigen receptor and the camelid variable region of the heavy chain, are the smallest antigen recognition domains (~15 kDa) and have unique characteristics compared to conventional antibodies. They are capable of binding epitopes that are hard to access for classical antibodies and can also be used for therapeutics or diagnostics, or modular building blocks for multi-domain constructs, antibody-drug conjugates, immunotoxins, or chimeric antigen receptor therapy. This protocol contains detailed procedures for the purification and validation of two single domain antibodies (one shark and one camel), which bind to the S2 subunit of the SARS-CoV-2 spike protein, using both bacterial and mammalian cell expression systems. It provides a comprehensive reference for the production of single domain antibodies with high yield, good quality, and purity.
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