Long‑term changes in the properties of skin-derived fibroblasts following irradiation of the head and neck

Gehrke,Thomas; Scherzad,Agmal; Hackenberg,Stephan; Ickrath,Pascal; Schendzielorz,Philipp; Hagen,Rudolf; Kleinsasser,Norbert

doi:10.3892/ol.2017.6593

Long‑term changes in the properties of skin-derived fibroblasts following irradiation of the head and neck

Authors:
- Thomas Gehrke
- Agmal Scherzad
- Stephan Hackenberg
- Pascal Ickrath
- Philipp Schendzielorz
- Rudolf Hagen
- Norbert Kleinsasser
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Affiliations: Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Würzburg, D‑97080 Würzburg, Germany
Published online on: July 18, 2017 https://doi.org/10.3892/ol.2017.6593
Pages: 3780-3786

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Abstract

The tumor stroma performs an important role in carcinogenesis. It predominantly consists of fibroblasts and the connective tissue produced by them, and undergoes a multitude of interactions with the surrounding cancer cells. Since irradiation is part of the majority of therapeutic strategies for head and neck squamous cell carcinoma, more information regarding the effects of a previous irradiation on the tumor stroma is desirable. In the present study, fibroblasts were cultivated from human non‑irradiated and pre‑irradiated skin of the neck for 48 h. Subsequently, analyses of cell viability, apoptosis, necrosis and motility were conducted via MTT assay, Annexin V/propidium iodide staining, electronic cell counting for 4 consecutive days, and scratch assay. Pre‑irradiated fibroblasts exhibited a significantly slower growth rate as well as increased rates of apoptosis and necrosis. They also exhibited significantly decreased motility compared with non‑irradiated fibroblasts. These results indicated the long‑term effects of irradiation on fibroblasts, which may affect cancer recurrence in the irradiated region via the tumor stroma. More information, such as that regarding the secretory capacities of pre‑irradiated fibroblasts, is required to evaluate the possible therapeutic implications of these findings.

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