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Title: Organotypic culture of human amnion cells in air-liquid interface as a potential substitute for skin regeneration
Authors: Simat, Siti Fatimah,
Geok Chin, Tan,
Ay Eeng, Tan,
Kienhui, Chua,
Tengku Ibrahim, Azmi,
Hayati, Abdul Rahman,
Keywords: Air-Liquid Interface
Epithelial Stem Cells
Human Amnion-Derived Stem Cells
Organotypic Culture
Skin Regeneration
Issue Date: 2013
Publisher: Informa Healthcare
Abstract: Background aims. The aim of the present study was to evaluate the effects of air-liquid interface on the differentiation potential of human amnion epithelial cells (HAECs) to skin-like substitute in organotypic culture. Methods. HAECs at passage 1-2 were seeded onto a fibrin layer populated with human amnion mesenchymal cells to form the organotypic cultures. The organotypic HAECs were then cultured for 7, 14 and 21 d in two types of culture system: the submerged culture and the air-liquid interface culture. Cell morphogenesis was examined under the light and electron microscopes (transmission and scanning) and analyzed by immunohistochemistry. Results. Organotypic HAECs formed a single layer epithelium after 3 wk in submerged as well as air-liquid interface cultures. Ultrastructurally, desmosomes were observed in organotypic HAECs cultured in the air-liquid interface but not in the submerged culture. The presence of desmosomes marked the onset of early epidermal differentiation. Organotypic HAECs were positive against anti-CK18 and anti-CK14 in both the submerged and the air-liquid interface cultures. The co-expression of CK14 and CK18 suggested that differentiation of HAECs into skin may follow the process of embryonic skin development. However, weak expression of CK14 was observed after 2 and 3 wk of culture in air-liquid interface. CK10, involucrin, type IV collagen and laminin-5 expression was absent in organotypic HAECs. This observation reflects the initial process of embryonic epidermal differentiation and stratification. Conclusions. Results from the present study suggest that the air-liquid interface could stimulate early differentiation of organotypic HAECs to epidermal cells, with a potential use for skin regeneration.
ISSN: 1465-3249
Appears in Collections:Cytotherapy

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