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    • 4. 发明申请
    • MIXTURES OF BINDING PROTEINS
    • 结合蛋白的混合物
    • WO2005068622A3
    • 2006-03-02
    • PCT/NL2005000036
    • 2005-01-19
    • MERUS B VLOGTENBERG TONHOOGENBOOM HENDRICUS RENERUS J
    • LOGTENBERG TONHOOGENBOOM HENDRICUS RENERUS J
    • C12P21/08C07K16/00C12N5/10C12P21/02
    • C12N15/1086C07K16/10C07K16/20C07K16/40C07K2317/22C07K2317/569C07K2318/20C12N15/1082
    • The invention provides methods for the production of libraries of cells expressing at least two separate single polypeptide chain binding proteins, in which the binding proteins have different target epitopes. Such libraries are made by integration of the nucleic acid sequences encoding the polypeptide chains into the genome of the host cell, and selecting for cells that have successfully integrated these nucleic acids. The selected cells are preferably subjected to a cloning step. Mixtures of binding proteins are produced without having to individually produce each of the components of the mixture. A library of cells wherein essentially each cell encodes at least two single polypeptide chain binding proteins having different target epitopes is also herewith provided, as well as methods for producing a composition comprising at least two separate single polypeptide chain binding proteins having different target epitopes.
    • 本发明提供了产生表达至少两种分开的单个多肽链结合蛋白的细胞文库的方法,其中结合蛋白具有不同的靶表位。 通过将编码多肽链的核酸序列整合到宿主细胞的基因组中并选择成功整合这些核酸的细胞来制备此类文库。 所选择的细胞优选进行克隆步骤。 产生结合蛋白的混合物,而不必单独产生混合物的每种组分。 还提供了其中基本上每个细胞编码至少两种具有不同靶表位的单个多肽链结合蛋白的细胞库,以及用于产生包含至少两种具有不同靶表位的单独多肽链结合蛋白的组合物的方法。
    • 5. 发明申请
    • HEAVY CHAIN LIBRARIES
    • 重型图书馆
    • WO0228903A3
    • 2003-01-23
    • PCT/NL0100670
    • 2001-09-12
    • CRUCELL HOLLAND BVLOGTENBERG TONHOUTZAGER ERWIN
    • LOGTENBERG TONHOUTZAGER ERWIN
    • C07K16/00C12N15/10C40B40/02
    • C40B40/02C07K16/00C07K2317/21C07K2317/56C12N15/1037
    • The invention provides libraries which comprise binding molecules that are adapted to expression in an expression organism, but which are also transferable to a human context without undergoing a change in conformation and/or build up. The invention therefore provides a method for producing a human monoclonal antibody, said method comprising: providing a library of binding molecules, the binding domain of which consists essentially of human heavy chain variable fragments in a functional format, selecting from said library at least one heavy chain variable fragment having a desired binding affinity, and inserting a nucleic acid encoding said heavy chain variable fragment into a nucleic acid encoding the complementary part of at least a heavy chain of said human monoclonal antibody, allowing for expression of the resulting heavy chain and for assembly of said heavy chain with a desired light chain, and producing a human monoclonal antibody. The conformation of said heavy chain variable fragment is such that it retains its binding affinity whether it is in phage display or in its normal heavy chain environment. A method for making a library for use in said method is also herewith provided, as well as methods of keeping heavy chain variable fragments in said conformation. The present invention allows for producing larger libraries than the known ones. Besides, loss of specificities and affinities because of expression problems are reduced.
    • 本发明提供了包含适于在表达生物体中表达但可转移至人类上下文而不经历构象变化和/或增殖的结合分子的文库。 因此,本发明提供了一种生产人单克隆抗体的方法,所述方法包括:提供结合分子文库,其结合域基本上由功能性格式的人重链可变片段组成,从所述文库中选择至少一种重 具有期望的结合亲和力的链可变片段,以及将编码所述重链可变片段的核酸插入编码所述人单克隆抗体的至少重链的互补部分的核酸中,允许所得重链的表达, 用所需的轻链组装所述重链,并产生人单克隆抗体。 所述重链可变片段的构象使得其保持其结合亲和力,无论是在噬菌体展示还是在其正常的重链环境中。 还提供了用于制备用于所述方法的文库的方法,以及在所述构象中保持重链可变片段的方法。 本发明允许生产比已知的更大的库。 此外,由于表达问题而导致的特殊性和亲和力的丧失也减少了。