Development of a Bronchial Wall Model: Triple Culture on a Decellularized Porcine Trachea

Tissue Engineering. Part C, Methods
Esther MeloCharles James Kirkpatrick

Abstract

In vitro coculture models mimicking the bronchial barrier are a significant step forward in investigating the behavior and function of the upper respiratory tract mucosa. To date, mostly synthetic materials have been used as substrates to culture the cells. However, decellularized tissues provide a more in vivo-like environment based on the native extracellular matrix. In this study, an in vitro, bronchial wall coculture model has been established using a decellularized, porcine luminal trachea membrane and employing three relevant human cell types. The tissue was decellularized and placed in plastic transwell supports. The human bronchial epithelial cell line, 16HBE14o-, was seeded on the apical side of the membrane with the human lung fibroblast cell line, Wi-38, and/or the microvascular endothelial cell line, ISO-HAS-1, seeded on the basolateral side. Transepithelial electrical resistance (TER) was measured over 10 days and tight/adherens junctions (ZO-1, occludin/β-catenin) were studied through immunofluorescence. Scanning electron microscopy (SEM) was performed to evaluate microvilli and cilia formation. All cultures grew successfully on the membrane. TER values of 555 Ω·cm(2) (±21, SEM) were achieved in the monoculture. C...Continue Reading

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Methods Mentioned

BETA
confocal microscopy
Scanning electron microscopy
atomic force microscopy

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