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Response of endothelial cells and pericytes to hypoxia and erythropoietin in a co-culture assay dedicated to soft tissue repair

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Abstract

The increasing mean life expectancy of the citizens of the western world countries leads to an increase of the age-related diseases, among them soft tissue defects exhibiting inadequate healing. In order to develop new therapeutic strategies to support disturbed soft tissue repair, there is a strong need of sophisticated in vitro assays. A new assay combining scratch wounding with co-cultures of primary human microvascular endothelial cells (HDMEC) and pericytes (HPC) focuses on basic characteristics of cell interaction against the background of soft tissue repair. The cell parameters proliferation, migration and differentiation, and the release of monocyte chemoattractant protein-1 (MCP-1) were analysed in response to hypoxia (pO2 < 5 mmHg) and to erythropoietin (EPO; 50 IU/ml), a glycoprotein hormone having shown promising effects in soft tissue repair. As basic characteristics of the assay, direct cell contact in co-culture led to a weakened proliferation of both cell types, an increase of the percentage of myofibroblast-like pericytes and to a higher release of MCP-1. Hypoxia caused a proliferation decrease of HPC in co-culture, which was slightly attenuated by EPO. Hypoxia also reduced the MCP-1 release of co-cultured cells, when EPO had been added. In addition, EPO had a rather positive effect on HPC migration under hypoxia. These in vitro results allow new insights into the interaction of pericytes with endothelial cells in the context of soft tissue repair.

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The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Trauma-, Hand- and Reconstructive Surgery, Saarland University, Kirrberger Strasse, Bldng. 57, 66421, Homburg, Germany

    Gerrit Schneider, Monika Bubel, Tim Pohlemann & Martin Oberringer

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  1. Gerrit Schneider
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  2. Monika Bubel
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  3. Tim Pohlemann
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  4. Martin Oberringer
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Correspondence to Martin Oberringer.

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Schneider, G., Bubel, M., Pohlemann, T. et al. Response of endothelial cells and pericytes to hypoxia and erythropoietin in a co-culture assay dedicated to soft tissue repair. Mol Cell Biochem 407, 29–40 (2015). https://doi.org/10.1007/s11010-015-2451-x

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  • DOI: https://doi.org/10.1007/s11010-015-2451-x

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