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Int. J. Mol. Sci. 2018, 19(6), 1719; https://doi.org/10.3390/ijms19061719

Effect of Different Preconditioning Regimens on the Expression Profile of Murine Adipose-Derived Stromal/Stem Cells

1
Division of Nephrology, Department of Internal Medicine III, Goethe-University, 60596 Frankfurt/M., Germany
2
Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
3
Division of Allergology, Pneumology and Cystic Fibrosis, Department for Children and Adolescents, University Hospital, Goethe-University, 60596 Frankfurt/M., Germany
*
Author to whom correspondence should be addressed.
Received: 10 May 2018 / Revised: 21 May 2018 / Accepted: 7 June 2018 / Published: 10 June 2018
(This article belongs to the Special Issue Adipose Stem Cells)
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Abstract

Stem cell-based therapies require cells with a maximum regenerative capacity in order to support regeneration after tissue injury and organ failure. Optimization of this regenerative potential of mesenchymal stromal/stem cells (MSC) or their conditioned medium by in vitro preconditioning regimens are considered to be a promising strategy to improve the release of regenerative factors. In the present study, MSC were isolated from inguinal adipose tissue (mASC) from C57BL/6 mice, cultured, and characterized. Then, mASC were either preconditioned by incubation in a hypoxic environment (0.5% O2), or in normoxia in the presence of murine epidermal growth factor (EGF) or tumor necrosis factor α (TNFα) for 48 h. Protein expression was measured by a commercially available array. Selected factors were verified by PCR analysis. The expression of 83 out of 308 proteins (26.9%) assayed was found to be increased after preconditioning with TNFα, whereas the expression of 61 (19.8%) and 70 (22.7%) proteins was increased after incubation with EGF or in hypoxia, respectively. Furthermore, we showed the proliferation-promoting effects of the preconditioned culture supernatants on injured epithelial cells in vitro. Our findings indicate that each preconditioning regimen tested induced an individual expression profile with a wide variety of factors, including several growth factors and cytokines, and therefore may enhance the regenerative potential of mASC for cell-based therapies. View Full-Text
Keywords: stem cells; pretreatment; preconditioning; mesenchymal stromal/stem cells; secretion; regeneration; cytokines stem cells; pretreatment; preconditioning; mesenchymal stromal/stem cells; secretion; regeneration; cytokines
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Baer, P.C.; Overath, J.M.; Urbschat, A.; Schubert, R.; Koch, B.; Bohn, A.A.; Geiger, H. Effect of Different Preconditioning Regimens on the Expression Profile of Murine Adipose-Derived Stromal/Stem Cells. Int. J. Mol. Sci. 2018, 19, 1719.

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