Long-Term Survival of Type XVII Collagen Revertant Cells in an Animal Model of Revertant Cell Therapy  Antoni Gostyński, Sara Llames, Marta García, María.

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Long-Term Survival of Type XVII Collagen Revertant Cells in an Animal Model of Revertant Cell Therapy  Antoni Gostyński, Sara Llames, Marta García, María J. Escamez, Lucía Martinez-Santamaria, Miranda Nijenhuis, Alvaro Meana, Hendri H. Pas, Fernando Larcher, Anna M.G. Pasmooij, Marcel F. Jonkman, Marcela Del Rio  Journal of Investigative Dermatology  Volume 134, Issue 2, Pages 571-574 (February 2014) DOI: 10.1038/jid.2013.308 Copyright © 2014 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 1 Long-term survival of C17 revertant cells in a skin-humanized mouse model. (a) Patient 026-01: left arm, outlined revertant patches with black asterisks. The red asterisk marks the location of the previous diagnostic biopsy specimen. (b) Immunofluorescence of the diagnostic biopsy showing 50% of the cells being revertant (white asterisks). (c) Biopsy for cell culture is taken from the revertant patch (outlined) next to the previous diagnostic biopsy location (red asterisk). (d) Immunohistochemical staining of the colony-forming efficiency assay with VK4 mAb showing two small revertant colonies (red asterisks) next to a large mutant colony (black asterisk). (e) Cultured keratinocytes on coverslips stained with 1A8C mAb (green) against the intracellular domain of C17. In blue cell nuclei. Revertant keratinocytes are marked with white asterisks. (f) Samples of skin equivalent stained with 1A8C mAb (green). White asterisks indicate the revertant regions of the epidermis. (g) Revertant graft (white asterisk) on mouse back 6 weeks after transplantation. Pigmentation is visible where human skin is present. (h) Graft on mouse sampled 10 weeks after transplantation and stained with VK4 mAb (green) against the intracellular domain of C17 and with mAb against mouse keratin 1 (red). In blue cell nuclei. The white line separates murine (Mouse) and human (Human) epidermis. (i) Percentage of revertant cells during in vitro culture, production of the skin equivalent, and after transplantation. For in vitro analysis after passage 1 and 2, 4,761 and 2,924 cells were counted, respectively. Journal of Investigative Dermatology 2014 134, 571-574DOI: (10.1038/jid.2013.308) Copyright © 2014 The Society for Investigative Dermatology, Inc Terms and Conditions