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5343 results about "Serum ige" patented technology

IgE is found at a very low concentration in serum. The primary function of IgE is to recognize antigen during an allergic reaction. Mast cells and basophils possess a receptor (FceR) to which the IgE binds.

Alteration of FcRn binding affinities or serum half-lives of antibodies by mutagenesis

The present invention provides for a modified antibody of class IgG, in which at least one amino acid from the heavy chain constant region selected from the group consisting of amino acid residues 250, 314, and 428 is substituted with another amino acid which is different from that present in the unmodified antibody, thereby altering the binding affinity for FcRn and / or the serum half-life in comparison to the unmodified antibody.
Owner:ABBOTT BIOTHERAPEUTICS CORP

Antibodies as T cell receptor mimics, methods of production and uses thereof

The present invention relates to a methodology of producing antibodies that recognize peptides associated with a tumorigenic or disease state, wherein the peptides are displayed in the context of HLA molecules. These antibodies will mimic the specificity of a T cell receptor (TCR) but will have higher binding affinity such that the molecules may be used as therapeutic, diagnostic and research reagents. The method of producing a T-cell receptor mimic of the present invention includes identifying a peptide of interest, wherein the peptide of interest is capable of being presented by an MHC molecule. Then, an immunogen comprising at least one peptide/MHC complex is formed, wherein the peptide of the peptide/MHC complex is the peptide of interest. An effective amount of the immunogen is then administered to a host for eliciting an immune response, and serum collected from the host is assayed to determine if desired antibodies that recognize a three-dimensional presentation of the peptide in the binding groove of the MHC molecule are being produced. The desired antibodies can differentiate the peptide/MHC complex from the MHC molecule alone, the peptide alone, and a complex of MHC and irrelevant peptide. Finally, the desired antibodies are isolated.
Owner:WEIDANZ JON A +2
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