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Monoclonal antibody against human bone alkaline phosphatase

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Summary

A monoclonal antibody which reacts preferentially with human bone alkaline phosphatase (AP) has been developed using human osteosarcoma bone AP as an immunogen. The antibody with the highest selectivity shows about three- and a-half fold greater binding to bone than to liver AP. The selectivity was confirmed using mixtures of authentic samples of the bone and liver isoenzymes. Its selectivity was also shown by measurements of bone AP in sera from patients with either bone or liver diseases. Such a selective antibody could lead to the development of a monoclonal antibody highly specific for bone AP which can be used for a more sensitive approach for quantitative analysis of the isoenzyme.

Résumé

Un anticorps monoclonal qui réagit préférentiellement avec les phosphatases alcalines (PA) de l'os humain a été obtenu en utilisant comme immunogène la PA osseuse d'un ostéosarcome humain. L'anticorps ayant la sélectivité la plus élevée présente une liaison trois fois et demie plus importante avec la PA osseuse qu'avec la PA hépatique. La sélectivité a été confirmée en utilisant des mélanges d'échantillons d'isoenzymes osseux et hépatiques. Sa sélectivité a été également démontrée par des mesures de la PA osseuse dans le sérum de patients présentant des maladies osseuses ou hépatiques. Un tel anticorps sélectif peut mener à obtenir un anticorps monoclonal hautement spécifique vis-à-vis de la PA osseuse, qui pourra être utilisé pour améliorer la sensibilité de l'analyse quantitative de l'isoenzyme.

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Masuhara, K., Yoshikawa, R., Takaoka, K. et al. Monoclonal antibody against human bone alkaline phosphatase. International Orthopaedics 15, 61–64 (1991). https://doi.org/10.1007/BF00210537

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  • DOI: https://doi.org/10.1007/BF00210537

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