Immortalized keratinocytes cells generates an effective model of Epidermal Human Equivalent for irritation and corrosion tests

Autor(es)

Mini, C. A. ^[1] ; Dreossi, S. A. C. ^[1] ; Abe, F. R. ^[1] ; Maria-Engler, S. S. ^[2] ; Oliveira, D. P. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Pharmaceut Sci Ribeirao Preto FCFRP USP, Lab Ecotoxicol & Human Toxicol, BR-14040903 Ribeirao Preto - Brazil

^[2] Univ Sao Paulo, Sch Pharmaceut Sci FCF USP, Skin Biol & Melanoma Grp, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: TOXICOLOGY IN VITRO; v. 71, MAR 2021.
• Citações Web of Science: 0

Resumo

Three-dimensional skin models, also named 3D skin models, human skin equivalents (HSEs), or Human Epidermal Equivalents (HEEs), have been increasingly used for chemical assessments in terms of efficacy and safety. Considering this, we developed an HEE model using immortalized HaCaT cells, aiming to overcome the limitation of primary tissue source. Our 3D model (HaCaT-HEE) exhibited important markers of cell differentiation (CK10, CK14, involucrin, and filaggrin), although the stratum corneum was shown to be modest. Besides, the model showed a good prediction potential considering membrane permeability, sensitivity, specificity, and accuracy in distinguishing irritant and corrosive effects after exposure to selected chemicals recommended by the OECD protocols. We also validated the formazan determination for the MTT method using High-Performance Liquid Chromatography (HPLC). For that, we considered carry over, linearity, reproducibility/robustness, accuracy, precision, selectivity, and matrix effect, according to the Food and Drug Administration (FDA) guideline. Based on our results, we can conclude that our model has an acceptable predictive value for the safety evaluation of compounds after skin exposure, with the great advantage of being constructed using immortalized cells. (AU)

• Processo FAPESP: 16/15660-4 - Avaliação de efeitos tóxicos locais na epiderme decorrentes da exposição a corantes utilizados em tinturas capilares
• Beneficiário: Camila Alessandra Mini
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 17/04926-6 - Melanoma e quimiorresistência: modelos in vitro e in silico para explorar alvos terapêuticos
• Beneficiário: Silvya Stuchi Maria-Engler
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 19/14527-7 - Bioimpressão de pele como plataforma para testes alternativos de segurança e eficácia
• Beneficiário: Silvya Stuchi Maria-Engler
• Modalidade de apoio: Auxílio à Pesquisa - Regular