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GIORNALE ITALIANO DI DERMATOLOGIA E VENEREOLOGIA

Rivista di Dermatologia e Malattie Sessualmente Trasmesse


Official Journal of the Italian Society of Dermatology and Sexually Transmitted Diseases
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Giornale Italiano di Dermatologia e Venereologia 2017 May 16

DOI: 10.23736/S0392-0488.17.05472-4

Copyright © 2017 EDIZIONI MINERVA MEDICA

lingua: Inglese

Construction of a Three-Dimensional in vitro skin model on polycaprolactone fibers

Qi LIU, Ru-Zhi ZHANG , Bin XU

Department of Dermatology, the Third Affiliated Hospital of Suzhou University, Changzhou, China


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BACKGROUND: To observe the morphological characteristics and the biological properties of human epidermal cells when cultured at an air–liquid interface in polycaprolactone (PCL) fibers as a three-dimensional scaffold for tissue engineering.
METHODS: In this study, the melanocytes and keratinocytes were obtained from human scalp skin, seeded onto a PCL film, and cocultured for 2 weeks to construct a three-dimensional (3D) skin model. The cells were then characterized by hematoxylin and eosin (H&E) staining, by immunohistochemical staining with antibodies to cytokeratin 15 (CK15), Ki-67, CD34, CD200 and HMB45 and by transmission electron microscopy.
RESULTS: Keratinocytes and melanocytes grew well in the co-culture system. Hematoxylin and eosin staining revealed that the cells adhered to the PCLfiber scaffold well, the keratinocyte layer became a multilayered concentric structure and the surface became distinctly keratinized at the air–liquid interface. Immunohistochemical analyses exhibited a scattered distribution of cells expressing CK15, CD34, CD200, Ki-67 and/or HMB45. Transmission electron microscopy revealed that the keratinocytes contained a number of keratin fibrils and membrane-coated granules.
CONCLUSIONS: The PCL scaffold has excellent adhesiveness and biocompatibility with human epidermal cells, and is suitable for constructing 3D skin models for tissue engineering in the future.


KEY WORDS: PCL fibers - Three-Dimensional (3D) models - Air–liquid interface - Keratinocytes

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