title: Plasticity of epidermal adult stem cells derived from adult goat ear skin.
abstract: Here we report the isolation and characterization of pluripotent stem cells from adult goat skin. We found that these primary cells have the properties of embryonic stem cells (ESC), including the expression of appropriate immunological markers and the capability of forming embryoid bodies. The subcultured cells also show the characteristics of stem cells, such as the expression of CK19, beta(1-)integrin, P63, and formation of holo-clones in culture. Therefore, we termed these cells epidermal adult stem cells (EpiASC), although their origin was not identified. We have shown that clones of individual EpiASC proliferate and differentiate in culture to produce neurons, cardiomyocytes, osteoblasts, and occytes. Further, we cultivated EpiASC on bioengineered dermis and denuded human amniotic membrane (HAM), to reconstruct artificial skin and corneal epithelium. We successfully transplanted those artificial tissues in goats with acute full-thickness skin defect (AFTSD) and limbal stem cell deficiency (LSCD), respectively. Our results showed that indeed EpiASC reconstructed the skin (hair was observed in restored areas), and repaired the damaged cornea of goats with total LSCD. These data confirm that EpiASC can differentiate into different functional cell types in vivo or in vitro. Due to their high degree of inherent plasticity, and to their easy accessibility for collection from the skin, EpiASC are excellent candidate sources for diverse cell therapies.
authors.affiliation: Shaanxi Branch of National Stem Cell Engineering Center, Northwest A&F University, YangLing, Shaanxi Province, China.
authors.forename: Xueyi
authors.initials: X
authors.lastname: Yang
authors.forename: Lei
authors.initials: L
authors.lastname: Qu
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Ming
authors.initials: M
authors.lastname: Zhao
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Jinlian
authors.initials: J
authors.lastname: Hua
authors.forename: Mingyan
authors.initials: M
authors.lastname: Shi
authors.forename: Nicanor
authors.initials: N
authors.lastname: Moldovan
authors.forename: Hongfeng
authors.initials: H
authors.lastname: Wang
authors.forename: Zhongying
authors.initials: Z
authors.lastname: Dou
mesh_terms: D053687:Adult Stem Cells / Q000502:physiology*; D000818:Animals; D002454:Cell Differentiation; D004423:Ear / Q000502:physiology*; D000078404:Epidermal Cells; D006041:Goats; D006801:Humans; D032383:Myocytes, Cardiac / Q000502:physiology; D009474:Neurons / Q000502:physiology; D010006:Osteoblasts / Q000502:physiology; D016038:Skin Transplantation / Q000379:methods*; D023822:Tissue Engineering / Q000379:methods*