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2020
Titel
Investigation of Cellular Function and DNA Integrity during 2D in vitro Culture of Human Salivary Gland Epithelial Cells
Abstract
In vitro culture of human salivary gland epithelial cells (SGEC) is still a challenge. A high quantity and quality of cells are needed for the cultivation of 3D matrices. Furthermore, it is known that DNA damage is supposed to be an important factor involved in carcinogenesis. This study investigates cellular function and DNA integrity of human SGEC during 3 passage steps in 2 groups (group 1: n = 10; group 2: n = 9). Cellular function was analyzed by immunofluorescence, transmission electron microscopy (TEM), and quantitative real-time polymerase chain reaction (qPCR). DNA integrity was tested via the comet assay. Immunohistochemistry and qPCR results showed stable a-amylase and pan-cytokeratin levels; TEM revealed functional cells; and no significant DNA damage could be detected in the comet assay during 3 culture steps. The study shows that not only at cellular but also at DNA level human SGEC can be safely quantified over 3 passages for preclinical tissue engineering without loss of differentiation and function.
Author(s)
Burghartz, Marc
Department of Otorhinolaryngology Head and Neck Surgery, Klinikum Stuttgart, Stuttgart, Germany
Taeger, Johannes
Department of Otorhinolaryngology Head and Neck Surgery, Klinikum Stuttgart, Stuttgart, Germany; Department of Otorhinolaryngology Plastic, Aesthetic, and Reconstructive Head and Neck Surgery, University Hospital Würzburg, Würzburg, Germany
Metzger, Marco
Department of Tissue Engineering and Regenerative Medicine (TERM), University Hospital Würzburg, Würzburg, Germany; Fraunhofer Institute for Silicate Research (ISC), Translational Center Regenerative Therapies (TLC-RT), Würzburg, Germany
Scherzad, Agmal
Department of Otorhinolaryngology Plastic, Aesthetic, and Reconstructive Head and Neck Surgery, University Hospital Würzburg, Würzburg, Germany
Gehrke, Thomas
Department of Otorhinolaryngology Plastic, Aesthetic, and Reconstructive Head and Neck Surgery, University Hospital Würzburg, Würzburg, Germany
Ickrath, Pascal
Department of Otorhinolaryngology Plastic, Aesthetic, and Reconstructive Head and Neck Surgery, University Hospital Würzburg, Würzburg, Germany
Kolb, Evelyn
Department of Otorhinolaryngology Plastic, Aesthetic, and Reconstructive Head and Neck Surgery, University Hospital Würzburg, Würzburg, Germany
Kleinsasser, Norbert
Department of Otorhinolaryngology Head and Neck Surgery, Kepler University, Linz, Austria
Hagen, Rudolf
Department of Otorhinolaryngology Plastic, Aesthetic, and Reconstructive Head and Neck Surgery, University Hospital Würzburg, Würzburg, Germany
