MULTI-VECTOR RECOMBINASE MEDIATED CASSETTE EXCHANGE

    公开(公告)号:US20240409615A1

    公开(公告)日:2024-12-12

    申请号:US18752501

    申请日:2024-06-24

    Abstract: The presently disclosed subject matter relates to multi-vector recombinase mediated cassette exchange approaches to achieve targeted integration of sequences of interest for the generation host cells expressing recombinant proteins, e.g., monoclonal antibodies, as well as compositions derived from the same, e.g., bispecific antibodies, and other complex format proteins, e.g., membrane protein complexes, and other difficult to express molecules.

    METHOD FOR THE EXPRESSION OF AN ANTIBODY-MULTIMER-FUSION

    公开(公告)号:US20220162295A1

    公开(公告)日:2022-05-26

    申请号:US17383316

    申请日:2021-07-22

    Abstract: Herein is reported a method for producing an antibody-multimer-fusion polypeptide comprising (a) an antibody heavy chain and an antibody light chain, and (b) a first fusion polypeptide comprising in N- to C-terminal direction a first part of a non-antibody multimeric polypeptide, an antibody heavy chain CH1 domain or an antibody light chain constant domain, an antibody hinge region, an antibody heavy chain CH2 domain and an antibody heavy chain CH3 domain, and a second fusion polypeptide comprising in N- to C-terminal direction the second part of the non-antibody multimeric polypeptide and an antibody light chain constant domain if the first polypeptide comprises an antibody heavy chain CH1 domain or an antibody heavy chain CH1 domain if the first polypeptide comprises an antibody light chain constant domain, wherein (i) the antibody heavy chain of (a) and the first fusion polypeptide of (b), (ii) the antibody heavy chain of (a) and the antibody light chain of (a), and (iii) the first fusion polypeptide of (b) and the second fusion polypeptide of (b) are each independently of each other covalently linked to each other by at least one disulfide bond, characterized in that the antibody-multimer-fusion is expressed by a recombinant mammalian cell obtained by transfecting a mammalian cell with the expression cassettes for the antibody heavy chain, the antibody light chain, the first fusion polypeptide and the second fusion polypeptide at a stoichiometric ratio of 1:1:2:1.

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