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    • 4. 发明申请
    • Heteromeric variable regions with unvaried human framework regions
    • US20050064438A1
    • 2005-03-24
    • US10697400
    • 2003-10-30
    • William HuseJeffry WatkinsHerren Wu
    • William HuseJeffry WatkinsHerren Wu
    • C07K16/28C07K16/36C07K16/46C12Q1/68G01N33/48G01N33/50G06F19/00
    • C07K16/465C07K16/00C07K16/2878C07K16/36C07K16/464C07K2317/24C07K2317/55C07K2317/56C07K2317/92
    • The invention provides a method of conferring donor CDR binding affinity onto an antibody acceptor variable region framework. The method consists of: (a) constructing a population of altered antibody variable region encoding nucleic acids, said population comprising encoding nucleic acids for an acceptor variable region framework containing a plurality of different amino acids at one or more acceptor framework region amino acid positions and donor CDRs containing a plurality of different amino acids at one or more donor CDR amino acid positions; (b) expressing said population of altered variable region encoding nucleic acids, and (c) identifying one or more altered variable regions having binding affinity substantially the same or greater than the donor CDR variable region. The acceptor variable region framework can be a heavy or light chain variable region framework and the populations of heavy and light chain altered variable regions can be expressed alone to identify heavy or light chains having binding affinity substantially the same or greater than the donor CDR variable region. The populations of heavy and light chains additionally can be coexpressed to identify heteromeric altered variable region binding fragments. The invention also provides a method of simultaneously grafting and optimizing the binding affinity of a variable region binding fragment. The method consists of: (a) constructing a population of altered heavy chain variable region encoding nucleic acids comprising an acceptor variable region framework containing donor CDRs and a plurality of different amino acids at one or more framework region and CDR amino acid positions; (b) constructing a population of altered light chain variable region encoding nucleic acids comprising an acceptor variable region framework containing donor CDRs and a plurality of different amino acids at one or more framework regions and CDR amino acid positions; (c) coexpressing said populations of heavy and light chain variable region encoding nucleic acids to produce diverse combinations of heteromeric variable region binding fragments, and (d) identifying one or more heteromeric variable region binding fragments having affinity substantially the same or greater than the donor CDR heteromeric variable region binding fragment. A method of optimizing the binding affinity of an antibody variable region is also provided. The method consists of: (a) constructing a population of antibody variable region encoding nucleic acids, said population comprising two or more CDRs containing a plurality of different amino acids at one or more CDR amino acid positions; (b) expressing said population of variable region encoding nucleic acids, and (c) identifying one or more variable regions having binding affinity substantially the same or greater than the donor CDR variable region. The variable region populations can be heavy or light chains and can be expressed as individual populations or they can be coexpressed to produce heteromeric variable region binding fragments.
    • 6. 发明授权
    • DNA cloning vectors with in vivo excisable plasmids
    • 具有体内可切除质粒的DNA克隆载体
    • US5128256A
    • 1992-07-07
    • US341261
    • 1989-04-20
    • William HuseJoseph A. SorgeJay M. Short
    • William HuseJoseph A. SorgeJay M. Short
    • C12N15/64C12N15/70
    • C12N15/70C12N15/64
    • Vectors are described that circumvent traditional DNA cloning and subcloning procedures, and that contain a unique DNA cartridge that permits both cloning of DNA directly into DNA sequences present within the cartridge, and in vivo removal and circularization of the cartridge thereby yielding an autonomously replicating structure. Because the DNA cartridge can include a wide variety of functional DNA sequences, the cloned DNA can be subjected to a plethora of molecular biological procedures without having to remove the cloned DNA from the cartridge thereby obviating the need to perform additional subcloning techniques. A particularly useful example of this type of vector is bacteriophage lambda containing the DNA cartridge.
    • 描述了可以克服传统DNA克隆和亚克隆程序的载体,并且其含有独特的DNA柱,其允许将DNA直接克隆到存在于盒内的DNA序列中,并且在体内移除和环化圆筒,从而产生自主复制的结构。 因为DNA盒可以包括多种功能性DNA序列,所以克隆的DNA可以经受大量的分子生物学过程,而不必从盒中除去克隆的DNA,从而避免进行附加亚克隆技术的需要。 这种载体的特别有用的实例是含有DNA盒的噬菌体λ。
    • 10. 发明申请
    • Method for identifying optimal binding ligands to a receptor
    • US20060194254A1
    • 2006-08-31
    • US11219519
    • 2005-09-02
    • William HuseMichael Freedman
    • William HuseMichael Freedman
    • C40B40/02C40B40/10
    • G01N33/566
    • The present invention provides a method for determining binding of a receptor to one or more ligands. The method consists of contacting a collective receptor variant population with one or more ligands and detecting binding of one or more ligands to the collective receptor variant population. The collective receptor variant population can be further divided into two or more subpopulations, one or more of the two or more subpopulations can be contacted with one or more ligands and one or more receptor variant subpopulations having binding activity to one or more ligands can be detected. The steps of dividing, contacting and detecting can be repeated one or more times. The invention also provides methods for identifying a receptor variant having optimal binding activity to one or more ligands. The invention additionally provides a method for determining binding of a ligand to one or more receptors. The method consists of contacting a collective ligand variant population with one or more receptors and detecting binding of one or more receptors to the collective ligand variant population. As with the variant receptor population, the methods for determining binding of a ligand to one or more receptors can include the steps of further dividing, contacting and detecting one or more ligand variants having binding activity to one or more receptors. The invention also provides methods for identifying a ligand or ligand variant having optimal binding activity.