Abstract
Since March 2013, animal testing for toxicity evaluation of cosmetic ingredients is banned in Europe. This directive applies to all personal care ingredients including oral ingredients. Gingival in vitro 3D models are commercially available. However, it is essential to develop “in house model” to modulate several parameters to study oral diseases, determine the toxicity of ingredients, test biocompatibility, and evaluate different formulations of cosmetic ingredients. Our expertise in tissue engineering allowed us to reconstruct human oral tissues from normal human gingival cells (fibroblasts and keratinocytes). Indeed, isolation from surgical leftover was performed to culture these gingival cells. These cells keep their endogenous capacity to proliferate allowing reconstruction of equivalent tissue close to in vivo tissue. Reconstruction of gingival epithelium, chorion equivalent, and the combination of these two tissues (full thickness) using primary gingival cells displayed all characteristics of an in vivo gingival model.
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I thank Doctor Hagege for his expertise in oral medicine and support in this work.
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Plaza, C., Capallere, C., Meyrignac, C. et al. Development of 3D gingival in vitro models using primary gingival cells. In Vitro Cell.Dev.Biol.-Animal (2024). https://doi.org/10.1007/s11626-024-00923-1
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DOI: https://doi.org/10.1007/s11626-024-00923-1