Protein/(poly)peptide libraries
First Claim
1. A library of nucleic acids,wherein said library encodes a plurality of human immunoglobulin variable domain amino acid sequences, each amino acid sequence comprising four consensus framework regions interspaced by three complementary determining regions CDR1, CDR2, and CDR3, wherein each of said nucleic acids comprises DNA cleavage sites at the boundary between each consensus framework region and each complementary determining region, and wherein each of said cleavage sites is unique within said nucleic acid but common to all nucleic acid sequences of said library at corresponding positions.
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Abstract
The present invention relates to synthetic DNA sequences which encode one or more collections of homologous proteins/(poly)peptides, and methods for generating and applying libraries of these DNA sequences. In particular, the invention relates to the preparation of a library of human-derived antibody genes by the use of synthetic consensus sequences which cover the structural repertoire of antibodies encoded in the human genome. Furthermore, the invention relates to the use of a single consensus antibody gene as a universal framework for highly diverse antibody libraries.
96 Citations
74 Claims
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1. A library of nucleic acids,
wherein said library encodes a plurality of human immunoglobulin variable domain amino acid sequences, each amino acid sequence comprising four consensus framework regions interspaced by three complementary determining regions CDR1, CDR2, and CDR3, wherein each of said nucleic acids comprises DNA cleavage sites at the boundary between each consensus framework region and each complementary determining region, and wherein each of said cleavage sites is unique within said nucleic acid but common to all nucleic acid sequences of said library at corresponding positions.
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54. An expression library, comprising a library of nucleic acids wherein each of said nucleic acids is contained within an expression vector,
wherein said library of nucleic acids encodes a plurality of human immunoglobulin variable domain amino acid sequences, each amino acid sequence comprising four consensus framework regions interspaced by three complementarity determining regions CDR1, CDR2, and CDR3, wherein each of said nucleic acids comprises DNA cleavage sites at the boundary between each consensus framework region and complementarity determining region, and wherein each of said cleavage sites is unique within said nucleic acid but common to all nucleic acid sequences of said library at corresponding positions.
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62. A method of producing an antibody library, comprising culturing a collection of host cells transformed with an expression library members, wherein said expression library comprises a library of nucleic acids, wherein each of said nucleic acids is contained within an expression vector, and
wherein said library of nucleic acids encodes a plurality of human immunoglobulin variable domain amino acid sequences, each amino acid sequence comprising four consensus framework regions interspaced by three complementarity determining regions CDR1, CDR2, and CDR3, wherein each of said nucleic acids comprises DNA cleavage sites at the boundary between each consensus framework region and complementarity determining region, and wherein each of said cleavage sites is unique within said nucleic acid but common to all nucleic acid sequences of said library at corresponding positions.
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67. A library of nucleic acids,
wherein said library encodes a plurality of human immunoglobulin variable domain amino acid sequences, wherein a plurality of VH families and/or a plurality of VL families are represented by said amino acid sequences; -
wherein each amino acid sequences comprises four consensus framework regions interspaced by three complementarity determining regions CDR1, CDR2, and CDR3;
wherein each of said nucleic acids comprises DNA cleavage sites at the boundary between each consensus framework region and each complementarity determining region; and
wherein each of said cleavage sites is unique within said nucleic acid but common to all nucleic acid sequences of said library at corresponding positions. - View Dependent Claims (68, 69, 70)
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71. A library of nucleic acids,
wherein said library encodes a plurality of human immunoglobulin variable domain amino acid sequences; -
wherein said each amino acid sequence comprises (i) a consensus consequence comprising four consensus framework regions, and (ii) three complementarity determining regions CDR1, CDR2, and CDR3 interspaced, respectively, between said consensus framework regions;
wherein each of said nucleic acids comprises DNA cleavage sites at the boundary between each consensus framework region and each complementarity determining region; and
wherein each of said cleavage sites is unique within said nucleic acid but common to all nucleic acid sequences of said library at corresponding positions; and
wherein a plurality of antibody subgroups is represented by said amino acid sequences.- View Dependent Claims (72, 73, 74)
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Specification