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American Journal of Pathology, Vol 131, 290-297, Copyright © 1988 by American Society for Investigative Pathology

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Monoclonal antibodies directed against human airway secretions. Localization and characterization of antigens

WE Finkbeiner and CB Basbaum
Department of Pathology, University of California, San Francisco 94143.

Cellular mechanisms of normal airway mucus secretion and their alterations in chronic obstructive lung disease are poorly understood. To aid in their study, the authors have produced a panel of monoclonal antibodies directed against various constituents of human airway secretions. Two fusions yielded 401 hybridoma-containing cultures. Supernatants from 150 of these cultures stained human tracheal secretory cells by immunofluorescence. Twenty-nine hybridomas were selected for expansion because they selectively stained a single cell type or displayed another interesting distribution. Antigens were further characterized by their localization in glycol methacrylate sections of human trachea, sensitivity to periodate oxidations, selective affinity for fraction peaks obtained by Sepharose 4B chromatography, and reactivity with molecules of various sizes, as estimated by SDS-PAGE. These antibodies will be useful for 1) quantitative detection of antigens in sputum or lavage samples by immunoassay and 2) purification and biochemical characterization of molecular constituents of airway secretions in health and disease.


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Copyright © 1988 by the American Society for Investigative Pathology.