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Biomedical subjects

G Scharte

Publications and source records attributed to G Scharte.

5 recordsLinked to original sources

Production of monoclonal antibodies against epitopes of the main coat protein of filamentous fd phages.

Three monoclonal antibodies (MAbs) were produced which react with epitopes of the main structural coat protein (pVIII) of filamentous fd phages as demonstrated by solid-phase fluorometric enzyme immunoassays and by immunoelectron microscopy. The antibodies are of the IgG1, IgG2a and IgG2b immunoglobulin subclasses. Since they also react with recombinant phages expressing antigen fragments in their pIII region they may be suitable reagents for the demonstration and isolation of filamentous phages used in recombinant protein technology.

Animals

Monoclonal antibodies to human chorionic gonadotropin (HCG) and their use in two-site binding enzyme immunoassays.

A panel of mouse monoclonal antibodies (MABs) was produced against human chorionic gonadotropin (HCG) and its isolated beta-subunit (beta-HCG). According to their binding specificities the antibodies could be divided into HCG-specific and cross-reactive MABs. The HCG-specific antibodies reacted with antigenic sites on holo-HCG or holo-HCG and beta-HCG, or exclusively with the non-associated beta-HCG chain. The cross-reactive antibodies reacted with either HCG and luteinizing hormone (LH) or with HCG, LH, follicle-stimulating hormone (FSH) and thyroid-stimulating hormone (TSH). According to the binding specificities of the MABs and their reciprocal inhibition detected in two-site binding enzyme immunoassays (EIA), altogether 13 epitopes (including the 3 hidden epitopes detectable only on free non-associated beta-HCG) were distinguished by the antibodies described here. Antibody combinations resulting in most effective and specific HCG- or beta-HCG-determination were used as clinical assays and proved their reliability and correctness for monitoring patients with HCG- and/or beta-HCG-producing tumors before and after therapy.

Animals