title: Characterisation of human fibroblasts as keratinocyte feeder layer using p63 isoforms status.
abstract: Large-scale culture of primary keratinocytes allows the production of large epidermal sheet surfaces for the treatment of extensive skin burns. This method is dependent upon the capacity to establish cultures of proliferating keratinocytes in conditions compatible with their clonal expansion while maintaining their capacity to differentiate into the typical squamous pattern of human epidermis. Feeder layers are critical in this process because the fibroblasts that compose this layer serve as a source of adhesion, growth and differentiation factors. In this report, we have characterise the expression patterns of p63 isoforms in primary keratinocytes cultured on two different feeder layer systems, murine 3T3 and human fibroblasts. We show that with the latter, keratinocytes express a higher ratio of Delta N to TAp63 isoform, in relation with higher clonogenic potential. These results indicate that human fibroblasts represent an adequate feeder layer system to support the culture of primary human keratinocytes.
authors.affiliation: Banque de Tissus et Cellules des Hospices Civils de Lyon, Lyon, France.
authors.forename: Céline
authors.initials: C
authors.lastname: Auxenfans
authors.forename: Amélie
authors.initials: A
authors.lastname: Thépot
authors.forename: Virginie
authors.initials: V
authors.lastname: Justin
authors.forename: Agnès
authors.initials: A
authors.lastname: Hautefeuille
authors.forename: Lili
authors.initials: L
authors.lastname: Shahabeddin
authors.forename: Odile
authors.initials: O
authors.lastname: Damour
authors.forename: Pierre
authors.initials: P
authors.lastname: Hainaut
mesh_terms: D016475:3T3 Cells; D000818:Animals; D002454:Cell Differentiation; D049109:Cell Proliferation; D002470:Cell Survival; D002478:Cells, Cultured; D018920:Coculture Techniques / Q000379:methods*; D005347:Fibroblasts / Q000166:cytology* / Q000378:metabolism*; D006801:Humans; D015603:Keratinocytes / Q000166:cytology* / Q000378:metabolism*; D051379:Mice; D023822:Tissue Engineering / Q000379:methods*; D015534:Trans-Activators / Q000378:metabolism*; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins / Q000378:metabolism*
chemical_list: C115051:TP63 protein, human; D015534:Trans-Activators; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins