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Epidermal structure created by canine hair follicle keratinocytes enriched with bulge cells in a three-dimensional skin equivalent model in vitro: implications for regenerative therapy of canine epidermis.
MedLine Citation:
PMID:  23331683     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Background -  Keratinocytes in the hair follicle bulge region have a high proliferative capacity, with characteristics of epithelial stem cells. This cell population might thus be an ideal source for generating the interfollicular epidermis in a canine skin equivalent. Hypothesis/Objectives -  This study was designed to determine the ability of canine hair follicle bulge cell-enriched keratinocytes to construct canine living skin equivalents with interfollicular epidermis in vitro. Animals -  Four healthy beagle dogs from a research colony. Methods -  Bulge cell-enriched keratinocytes showing keratin 15 immunoreactivity were isolated from canine hair follicles and cultured on dermal equivalent containing canine fibroblasts. Skin equivalents were subjected to histological, immunohistochemical, western blot and RT-PCR analyses after 10-14 days of culture at the air-liquid interface. Results -  The keratinocyte sheets showed an interfollicular epidermal structure comprising four to five living cell layers covered with a horny layer. Immunoreactivities for keratin 14 and desmoglein 3 were detected in the basal and immediate suprabasilar layers of the epidermis, while keratin 10 and desmoglein 1 occurred in more superficial layers. Claudin 1 immunoreactivity was seen in the suprabasalar layer of the constructed epidermis, and filaggrin monomers and loricrin were detected in the uppermost layer. Basal keratinocytes in the skin equivalent demonstrated immunoreactivity to antibodies against basement membrane zone molecules. Conclusions and clinical importance -  A bulge stem cell-enriched population from canine hair follicles formed interfollicular epidermis within 2 weeks in vitro, and thus represents a promising model for regenerative therapy of canine skin.
Authors:
Tetsuro Kobayashi; Kaoru Enomoto; Yu Hsuan Wang; Ji Seon Yoon; Ryoko Okamura; Kaori Ide; Manabu Ohyama; Toshio Nishiyama; Toshiroh Iwasaki; Koji Nishifuji
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Veterinary dermatology     Volume:  24     ISSN:  1365-3164     ISO Abbreviation:  Vet. Dermatol.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9426187     Medline TA:  Vet Dermatol     Country:  England    
Other Details:
Languages:  eng     Pagination:  77-e20     Citation Subset:  IM    
Copyright Information:
© 2013 The Authors. Veterinary Dermatology © 2013 ESVD and ACVD.
Affiliation:
Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, Japan Department of Veterinary Medicine and Scleroprotein and Leather Research Institute, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo, Japan.
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