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- W2892266199 abstract "Keratinocytes are the most abundant cell type in the epidermis. They prevent desiccation and provide immunological and barrier defense against potential pathogens such as Staphylococcus aureus and Candida albicans. The study of this first line of immune defense may be hindered by invasive isolation methods and/or improper culture conditions to support stem cell maintenance and other potential mechanisms contributing to long-term subcultivation in vitro. Primary keratinocytes have been successfully isolated from blister roofs induced by negative pressure, which separates the epidermis from the dermis in vivo in human subjects. This method allows collection of pure epidermal cells without dermal contamination in a minimally invasive manner. However, the isolated keratinocytes differentiate and senesce when cultured in vitro beyond five passages. Here, we present evidence that the Rho kinase (ROCK) inhibitor Y-27632 can be used to effectively increase the proliferative capabilities of keratinocytes isolated using the suction blister method, similar to what has been previously reported for primary keratinocytes isolated using alternative methods. We show that the increase in passage number is directly correlated to delayed differentiation, and that cells passaged long term with the inhibitor retain their ability to stratify in organotypic raft cultures and respond to cytokine treatment; additionally, the late passage cells have a heterogeneous mix of differentiated and non-differentiated cells which may be predicted by a ratio of select differentiation markers. The described method presents a minimally invasive procedure for keratinocyte isolation and prolonged culture that allows analysis of keratinocyte function in both healthy volunteers and patients with dermatologic diseases." @default.
- W2892266199 created "2018-09-27" @default.
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- W2892266199 date "2018-09-12" @default.
- W2892266199 modified "2023-10-06" @default.
- W2892266199 title "Prolonging culture of primary human keratinocytes isolated from suction blisters with the Rho kinase inhibitor Y-27632" @default.
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- W2892266199 doi "https://doi.org/10.1371/journal.pone.0198862" @default.
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