An Antisera for the Fluorescent Labeling of Mouse Amelogenesis

Abstract

Embryonic mammalian enamel extracellular matrix is immunogenic. Antisera has been produced in New Zealand white rabbits using 5-day-old (postnatal) C57B1/6J mandibular and maxillary incisor and molar tooth organs as immunogens. The expression of secretory amelogenesis in mouse molar tooth organs was studied from the "cap stage" (circa 17-day fetus) to the fifth day of postnatal odontogenesis using indirect immunofluorescent microscopy. The specificity of the antisera for enamel matrix secretion was unequivocal. Secretory amelogenesis was observed in molar tooth organs as early as day-2 postnatal age. These reagents and methods provide a significant strategy in studies of epithelial-mesenchymal interactions during tooth development.

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