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Heterogeneity of the human transferrin receptor and use of anti-transferrin receptor antibodies to detect tumours in vivo. 1987

M Panaccio, and J R Zalcberg, and C H Thompson, and M J Leyden, and J R Sullivan, and M Lichtenstein, and I F McKenzie
Department of Pathology, University of Melbourne, Parkville, Victoria, Australia.

The human transferrin receptor (TFR) which is present on dividing cells, many tumours and erythroid precursors is readily identified using specific monoclonal antibodies. A new anti-human TFR monoclonal antibody, HuLy-m9, is described and its distribution on cell lines, normal and tumour tissue was examined and compared with two other anti-TFR monoclonal antibodies, namely, OKT9 and 5E9. The three antibodies were shown to recognise different epitopes on the surface of the TFR and have different reactivities with in vitro cell lines. Peptide map analyses of the TFR recognised by each monoclonal antibody from the same cell line were identical; however, differences were observed between cell lines. 131I-radiolabelled HuLy-m9 was used to successfully localise a nasopharyngeal carcinoma in vivo.

UI MeSH Term Description Entries
D007526 Isoelectric Point The pH in solutions of proteins and related compounds at which the dipolar ions are at a maximum. Isoelectric Points,Point, Isoelectric,Points, Isoelectric
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D009369 Neoplasms New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms. Benign Neoplasm,Cancer,Malignant Neoplasm,Tumor,Tumors,Benign Neoplasms,Malignancy,Malignant Neoplasms,Neoplasia,Neoplasm,Neoplasms, Benign,Cancers,Malignancies,Neoplasias,Neoplasm, Benign,Neoplasm, Malignant,Neoplasms, Malignant
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D011990 Receptors, Transferrin Membrane glycoproteins found in high concentrations on iron-utilizing cells. They specifically bind iron-bearing transferrin, are endocytosed with its ligand and then returned to the cell surface where transferrin without its iron is released. Transferrin Receptors,Transferrin Receptor,Receptor, Transferrin
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000939 Epitopes Sites on an antigen that interact with specific antibodies. Antigenic Determinant,Antigenic Determinants,Antigenic Specificity,Epitope,Determinant, Antigenic,Determinants, Antigenic,Specificity, Antigenic
D001666 Binding Sites, Antibody Local surface sites on antibodies which react with antigen determinant sites on antigens (EPITOPES.) They are formed from parts of the variable regions of FAB FRAGMENTS. Antibody Binding Sites,Paratopes,Antibody Binding Site,Binding Site, Antibody,Paratope
D001667 Binding, Competitive The interaction of two or more substrates or ligands with the same binding site. The displacement of one by the other is used in quantitative and selective affinity measurements. Competitive Binding

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