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Abstract

Biology

Isolation and Culture of Primary Oral Keratinocytes from the Adult Mouse Palate

Published: September 24th, 2021

DOI:

10.3791/62820

1Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, 2Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, 3International Research Center for Medical Sciences (IRCMS), Kumamoto University, 4Division of Biomimetics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, 5Faculty of Medicine, University of Tsukuba

Abstract

For years, most studies involving keratinocytes have been conducted using human and mouse skin epidermal keratinocytes. Recently, oral keratinocytes have attracted attention because of their unique function and characteristics. They maintain the homeostasis of the oral epithelium and serve as resources for applications in regenerative therapies. However, in vitro studies that use oral primary keratinocytes from adult mice have been limited due to the lack of an efficient and well-established culture protocol. Here, oral primary keratinocytes were isolated from the palate tissues of adult mice and cultured in a commercial low-calcium medium supplemented with a chelexed-serum. Under these conditions, keratinocytes were maintained in a proliferative or stem cell-like state, and their differentiation was inhibited even after increased passages. Marker expression analysis showed that the cultured oral keratinocytes expressed the basal cell markers p63, K14, and α6-integrin and were negative for the differentiation marker K13 and the fibroblast marker PDGFRα. This method produced viable and culturable cells suitable for downstream applications in the study of oral epithelial stem cell functions in vitro.

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Keywords Primary Oral Keratinocytes

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