申请人:NantBio, Inc.
公开号:US11034951B2
公开(公告)日:2021-06-15
Compositions, methods and uses of a recombinant virus and/or recombinant viral vector encoding a distinct antibody or antibody fragment generated from high-diversity nucleic acid library are presented. Preferably, the recombinant virus is genetically modified, low immunogenic virus, for example, an E2b-deleted adenovirus. The high-diversity nucleic acid library comprises or is derived from (1) a VH-CDR1/2 sub-library, (2) a plurality of VH-CDR3 sub-libraries, and (3) a VL sub-library, each of which comprises a plurality of members. Preferably, each member of the sub-libraries comprises at least one random cassette that has a plurality of degenerate base positions. In an especially preferred embodiment, at least portions of at least two members of the VH-CDR1/2 sub-library, the plurality of VH-CDR3 sub-libraries, and the VL sub-library are recombined to form an expression library member in an expression library, where each member of the expression library encodes a distinct antibody or antibody fragment.
本文介绍了一种重组病毒和/或重组病毒载体的组成、方法和用途,这种病毒和/或重组病毒载体编码由高多样性核酸文库产生的独特抗体或抗体片段。重组病毒最好是经过基因修饰的低免疫原性病毒,例如 E2b 缺失的腺病毒。高多样性核酸文库包括或来源于(1)VH-CDR1/2 子文库,(2)多个 VH-CDR3 子文库和(3)VL 子文库,每个子文库包括多个成员。优选地,子库的每个成员包括至少一个具有多个退化碱基位置的随机盒。在一个特别优选的实施方案中,VH-CDR1/2 子库、多个 VH-CDR3 子库和 VL 子库中至少两个成员的至少部分被重组,以在表达库中形成表达库成员,其中表达库的每个成员编码不同的抗体或抗体片段。