摘要:
The present invention features, inter alia, compositions and methods for the treatment of cancer and infectious disease. The compositions include engineered proteins that specifically bind a metal chelate and may be bispecific. For example, the engineered proteins may bind (a) a target (e.g., a cellular protein) on a cancerous cell or a pathogen and (b) a metal chelate comprising DOTA, or an active variant thereof, and a metal ion such as a radionuclide. By virtue of the multiple binding sites, the engineered protein effectively delivers a metal chelate to a cell one wishes to destroy.
摘要:
The present invention relates generally to growth factor receptor epitope peptides, particularly EGF family receptor epitope peptides. The invention also relates to the use of the receptor peptides in generating antibodies which have anti-tumor or anti-cancer activity or in stimulating an immunological response. The invention further relates to antibodies specifically directed against the receptor peptides. Methods for generating an immune response and for treatment of tumors and cancer are also provided.
摘要:
Antibodies, or antigen-binding portions thereof, to aspartyl (asparaginyl) β-hydroxylase are provided. The anti-aspartyl (asparaginyl) β-hydroxylase antibodies, or antigen-binding portions thereof, can modulate activity of aspartyl (asparaginyl) β-hydroxylase.
摘要:
The present invention is based, in part, on our discovery that EGF can be engineered to generate mutants that bind to the EGF receptor (EGFR) of a cell and that have a desirable effect on the activity of the cell. For example, the mutants can agonize the receptor (i.e., increase a biological activity of the receptor), or antagonize the receptor (i.e., decrease or inhibit a biological activity of the receptor). In turn, the rate at which the cell proliferates, for example, can be changed. Moreover, some of these mutants bind EGFR with a higher affinity than wild-type EGF exhibits. The affinity may increase by about, for example, 2-, 5-, 10-, 15-, 20-, 25-, 30-, 50-, or 100-fold relative to wild-type EGF.
摘要:
The invention discloses methods for identifying antibodies that reduce or prevent signaling by intact epidermal growth factor receptor (EGFR), or mutant EGFRs, such as EGFRvIII.
摘要:
The present invention relates to improved antibodies against tumor surface antigens and their use in the treatment of tumors. Of particular interest are highly stable, humanized, high affinity antibodies against carcinoembryonic antigen (CEA), especially the antibody we have termed sm3E, which is derived from the scFv antibody MFE-23. Such antibodies have the potential for improved therapeutic efficacy.
摘要:
T cell receptors (TCRS) that have higher affinity for a ligand than wild type TCRs are provided. These high affinity TCRs are formed by mutagenizing a T cell receptor protein coding sequence to generate a variegated population of mutants of the T cell receptor protein coding sequence; transforming the T cell receptor mutant coding sequence into yeast cells; inducing expression of the T cell receptor mutant coding sequence on the surface of yeast cells; and selecting those cells expressing T cell receptor mutants that have higher affinity for the peptide/MHC ligand than the wild type T cell receptor protein. The high affinity TCRs can be used in place of an antibody or single chain antibody.
摘要:
The present invention relates to IL-2 mutants with increased affinity for the IL-2 alpha-receptor subunit (IL-2Rα). The invention thus includes IL-2 mutants with improved biological potency. The invention also includes methods for directed evolution of IL-2α using yeast surface display to generate mutants with increased affinity for IL-2Rα.
摘要:
The present invention overcomes the inadequacies inherent in the known methods for generating libraries of antibody-encoding polynucleotides by specifically designing the libraries with directed sequence and length diversity. The libraries are designed to reflect the preimmune repertoire naturally created by the human immune system and are based on rational design informed by examination of publicly available databases of human antibody sequences.