Abstract: Described are transgenic, non-human animals comprising a nucleic acid encoding an immunoglobulin light chain, whereby the immunoglobulin light chain is human, human-like, or humanized. The nucleic acid is provided with a means that renders it resistant to DNA rearrangements and/or somatic hypermutations. In one embodiment, the nucleic acid comprises an expression cassette for the expression of a desired molecule in cells during a certain stage of development in cells developing into mature B cells. Further provided is methods for producing an immunoglobulin from the transgenic, non-human animal.

Abstract: Provided is methods for producing mixtures of antibodies from a single host cell clone, wherein, a nucleic acid sequence encoding a light chain and nucleic acid sequences encoding different heavy chains are expressed in a recombinant host cell. The recombinantly produced antibodies in the mixtures according to the invention suitably comprise identical light chains paired to different heavy chains capable of pairing to the light chain, thereby forming functional antigen-binding domains. Mixtures of the recombinantly produced antibodies are also provided by the invention. Such mixtures can be used in a variety of fields.

Abstract: Described are transgenic, non-human animals comprising a nucleic acid encoding an immunoglobulin light chain, whereby the immunoglobulin light chain is human, human-like, or humanized. The nucleic acid is provided with a means that renders it resistant to DNA rearrangements and/or somatic hypermutations. In one embodiment, the nucleic acid comprises an expression cassette for the expression of a desired molecule in cells during a certain stage of development in cells developing into mature B cells. Further provided is methods for producing an immunoglobulin from the transgenic, non-human animal.

Abstract: Described are transgenic, non-human animals comprising a nucleic acid encoding an immunoglobulin light chain, whereby the immunoglobulin light chain is human, human-like, or humanized. The nucleic acid is provided with a means that renders it resistant to DNA rearrangements and/or somatic hypermutations. In one embodiment, the nucleic acid comprises an expression cassette for the expression of a desired molecule in cells during a certain stage of development in cells developing into mature B cells. Further provided is methods for producing an immunoglobulin from the transgenic, non-human animal.

Abstract: Provided is methods for producing mixtures of antibodies from a single host cell clone, wherein, a nucleic acid sequence encoding a light chain and nucleic acid sequences encoding different heavy chains are expressed in a recombinant host cell. The recombinantly produced antibodies in the mixtures according to the invention suitably comprise identical light chains paired to different heavy chains capable of pairing to the light chain, thereby forming functional antigen-binding domains. Mixtures of the recombinantly produced antibodies are also provided by the invention. Such mixtures can be used in a variety of fields.

Abstract: The invention is among others concerned with human CD3 binding antibodies comprising a heavy chain and light chain wherein said heavy chain comprises a variable region that comprises the amino acid sequence (SEQ ID NO: 61): QVQLV QSGGG VVQPG RSLRL SCVAS GFTFS SYGMH WVRQA PGKGL EWVAA IWYX1X2 RKQDY ADSVK GRFTI SRDNS KNTLY LQMNS LRAED TAVYY CTRGT GYNWF DPWGQ GTLVT VSS with 0-5 amino acid insertions, deletions, substitutions, additions or a combination thereof at one or more positions other than the position indicated by X1X2; wherein X1=N and X2=A; X1=N and X2=T; X1=S and X2=G; X1=H and X2=G; X1=D and X2=G; or X1=H and X2=A. The invention is also concerned with bispecific antibodies that have a heavy chain as defined herein above. The invention is also concerned with methods of production of the antibody, cells producing the antibody and with (medical) uses of the antibody.

Abstract: Provided are methods for efficiently and comprehensively screening antibody repertoires from B cells to obtain and produce molecules with binding characteristics and functional activities for use in human therapy.

Abstract: Described are combinations of specific binding proteins, such as immunoglobulins, that are designed to be true combinations, essentially all components of the combination being functional and compatible with each other. Further provided are methods for producing a composition comprising at least two different proteinaceous molecules comprising paired variable regions, the at least two proteinaceous molecules having different binding specificities, comprising paired variable regions, at least two proteinaceous molecules having different binding specificities, comprising contacting at least three different variable regions under conditions allowing for pairing of variable regions and harvesting essentially all proteinaceous molecules having binding specificities resulting from the pairing.

Abstract: The present invention provides combinations of specific binding proteins, such as immunoglobulins, that are designed to be true combinations, essentially all components of the combination being functional and compatible with each other. The invention further provides a method for producing a composition comprising at least two different proteinaceous molecules comprising paired variable regions, the at least two proteinaceous molecules having different binding specificities, comprising paired variable regions, at least two proteinaceous molecules having different binding specificities, comprising contacting at least three different variable regions under conditions allowing for pairing of variable regions and harvesting essentially all proteinaceous molecules having binding specificities resulting from the pairing.

Abstract: The present invention provides combinations of specific binding proteins, such as immunoglobulins, that are designed to be true combinations, essentially all components of the combination being functional and compatible with each other. The invention further provides a method for producing a composition comprising at least two different proteinaceous molecules comprising paired variable regions, the at least two proteinaceous molecules having different binding specificities, comprising paired variable regions, at least two proteinaceous molecules having different binding specificities, comprising contacting at least three different variable regions under conditions allowing for pairing of variable regions and harvesting essentially all proteinaceous molecules having binding specificities resulting from the pairing.

Abstract: Described are transgenic, non-human animals comprising a nucleic acid encoding an immunoglobulin light chain, whereby the immunoglobulin light chain is human, human-like, or humanized. The nucleic acid is provided with a means that renders it resistant to DNA rearrangements and/or somatic hypermutations. In one embodiment, the nucleic acid comprises an expression cassette for the expression of a desired molecule in cells during a certain stage of development in cells developing into mature B cells. Further provided is methods for producing an immunoglobulin from the transgenic, non-human animal.

Abstract: The invention provides means and methods for producing one or more Ig-like molecules in a single host cell. Novel CH3 mutations enabling the production of monospecific and/or bispecific Ig-like molecules of interest are also provided.

Abstract: The present invention provides combinations of specific binding proteins, such as immunoglobulins, that are designed to be true combinations, essentially all components of the combination being functional and compatible with each other. The invention further provides a method for producing a composition comprising at least two different proteinaceous molecules comprising paired variable regions, the at least two proteinaceous molecules having different binding specificities, comprising paired variable regions, at least two proteinaceous molecules having different binding specificities, comprising contacting at least three different variable regions under conditions allowing for pairing of variable regions and harvesting essentially all proteinaceous molecules having binding specificities resulting from the pairing.

Abstract: The invention relates in one aspect to bispecific antibodies comprising a first antigen-binding site that binds EGFR and a second antigen-binding site that binds Erb B-3, wherein the antibody has a half maximal growth inhibitory concentration (IC50) of less than 200 pM for inhibiting EGFR and/or Erb B-3 ligand induced growth of Bx PC3 cells or Bx PC3-luc2 cells. Further described are method for producing the bispecific antibodies and means and methods for the treatment of subjects with the antibodies.

Abstract: Provided is methods for producing mixtures of antibodies from a single host cell clone, wherein, a nucleic acid sequence encoding a light chain and nucleic acid sequences encoding different heavy chains are expressed in a recombinant host cell. The recombinantly produced antibodies in the mixtures according to the invention suitably comprise identical light chains paired to different heavy chains capable of pairing to the light chain, thereby forming functional antigen-binding domains. Mixtures of the recombinantly produced antibodies are also provided by the invention. Such mixtures can be used in a variety of fields.