title: [CO-TRANSPLANTATION OF MOUSE EPIDERMIS AND DERMIS CELLS IN INDUCING HAIR FOLLICLE REGENERATION].
abstract: OBJECTIVE
  To investigate the co-transplantation of C57-green fluorescent protein (GFP) mouse epidermis and dermis cells subcutaneously to induce the hair follicle regeneration.
  
  
  METHODS
  C57-GFP mouse epidermis and dermis were harvested for isolation the mouse epidermis and dermis cells. The morphology of epidermis and dermis mixed cells at ratio of 1:1 of adult mouse, dermis cells of adult mouse, cultured 3rd generation dermis cells were observed by fluorescence microscope. Immunocytochemistry staining was used to detect hair follicle stem cells markers in cultured 3rd generation dermis cells from new born C57-GFP mouse. And then the epidermis and dermis mixed cells of adult mouse (group A), dermis cells of adult mouse (group B), cultured 3rd generation dermis cells of new born mouse (group C), and saline (group D) were transplanted subcutaneously into Balb/c nude mice. The skin surface of nude mice were observed at 4, 5, 6 weeks of transplantation and hair follicle formation were detected at 6 weeks by immunohistochemistry staining.
  
  
  RESULTS
  The isolated C57-GFP mouse epidermis and dermis cells strongly expressed the GFP under the fluorescence microscope. Immunocytochemistry staining for hair follicle stem cells markers in cultured 3rd generation dermis cells showed strong expression of Vimentin and α-smooth muscle actin, indicating that the cells were dermal sheath cells; some cells expressed CD133, Versican, and cytokeratin 15. After transplanted for 4-6 weeks, the skin became black at the injection site in group A, indicating new hair follicle formation. However, no color change was observed in groups B, C, and D. Immunohistochemical staining showed that new complete hair follicles structures formed in group A. GFP expression could be only observed in the hair follicle dermal sheath and outer root sheath in group B, and it could also be observed in the hair follicle dermal sheath, outer root sheath, dermal papilla cells, and sweat gland in group C. The expression of GFP was negative in group D.
  
  
  CONCLUSIONS
  Co-transplantation of mouse epidermis and dermis cells can induce the hair follicle regeneration by means of interaction of each other. And transplantation of isolated dermis cells or cultured dermis cells individually only partly involved in the hair follicles formation.
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.forename: Jiafei
authors.initials: J
authors.lastname: Xi
authors.forename: Daqing
authors.initials: D
authors.lastname: Liu
authors.forename: Xiuyuan
authors.initials: X
authors.lastname: Zhang
authors.forename: Yang
authors.initials: Y
authors.lastname: Lü
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Jingxue
authors.initials: J
authors.lastname: Wang
authors.forename: Junnian
authors.initials: J
authors.lastname: Zhou
authors.forename: Xue
authors.initials: X
authors.lastname: Nan
authors.forename: Wen
authors.initials: W
authors.lastname: Yue
authors.forename: Xuetao
authors.initials: X
authors.lastname: Pei
mesh_terms: D000505:Alopecia / Q000601:surgery; D000818:Animals; D002469:Cell Separation; D017690:Cell Transplantation / Q000379:methods; D002478:Cells, Cultured; D020405:Dermis / Q000166:cytology; D000078404:Epidermal Cells; D004817:Epidermis; D049452:Green Fluorescent Proteins; D018859:Hair Follicle / Q000033:anatomy & histology / Q000254:growth & development*; D053569:Keratin-15; D051379:Mice; D008819:Mice, Nude; D012038:Regeneration; D012867:Skin / Q000166:cytology; D023822:Tissue Engineering / Q000379:methods*
chemical_list: D053569:Keratin-15; D049452:Green Fluorescent Proteins