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TGF-ß1 Induces Changes in the Energy Metabolism of White Adipose Tissue-Derived Human Adult Mesenchymal Stem/Stromal Cells In Vitro. Metabolites 2020; 10:metabo10020059. [PMID: 32046088 PMCID: PMC7074410 DOI: 10.3390/metabo10020059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 01/27/2020] [Accepted: 02/05/2020] [Indexed: 12/19/2022] Open
Abstract
Adipose tissue plays an active role in the regulation of the body’s energy balance. Mesenchymal stem/stromal cells from adipose tissue (adMSC) are the precursor cells for repair and adipogenesis. Since the balance of the differentiation state of adipose tissue-resident cells is associated with the development of various diseases, the examination of the regulation of proliferation and differentiation of adMSC might provide new therapeutic targets. Transforming growth factor-β1 (TGF-ß1) is synthetized by many cell types and is involved in various biological processes. Here, we investigated the effects of different concentrations of TGF-ß1 (1–10 ng/mL) on adMSC proliferation, metabolic activity, and analyzed the gene expression data obtained from DNA microarrays by bioinformatics. TGF-ß1 induced the concentration- and time-dependent increase in the cell number of adMSC with simultaneously unchanged cell cycle distributions. The basal oxygen consumption rates did not change significantly after TGF-ß1 exposure. However, glycolytic activity was significantly increased. The gene expression analysis identified 3275 differentially expressed genes upon exposure to TGF-ß1. According to the pathway enrichment analyses, they also included genes associated with energy metabolism. Thus, it was shown that TGF-ß1 induces changes in the energy metabolism of adMSC. Whether these effects are of relevance in vivo and whether they contribute to pathogenesis should be addressed in further examinations.
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Taha S, Volkmer E, Haas E, Alberton P, Straub T, David-Rus D, Aszodi A, Giunta R, Saller MM. Differences in the Inflammatory Response of White Adipose Tissue and Adipose-Derived Stem Cells. Int J Mol Sci 2020; 21:ijms21031086. [PMID: 32041245 PMCID: PMC7037886 DOI: 10.3390/ijms21031086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/30/2020] [Accepted: 02/04/2020] [Indexed: 12/18/2022] Open
Abstract
The application of liposuctioned white adipose tissue (L-WAT) and adipose-derived stem cells (ADSCs) as a novel immunomodulatory treatment option is the currently subject of various clinical trials. Because it is crucial to understand the underlying therapeutic mechanisms, the latest studies focused on the immunomodulatory functions of L-WAT or ADSCs. However, studies that examine the specific transcriptional adaptation of these treatment options to an extrinsic inflammatory stimulus in an unbiased manner are scarce. The aim of this study was to compare the gene expression profile of L-WAT and ADSCs, when subjected to tumor necrosis factor alpha (TNFα), and to identify key factors that might be therapeutically relevant when using L-WAT or ADSCs as an immuno-modulator. Fat tissue was harvested by liposuction from five human donors. ADSCs were isolated from the same donors and shortly subjected to expansion culture. L-WAT and ADSCs were treated with human recombinant TNFα, to trigger a strong inflammatory response. Subsequently, an mRNA deep nextgeneration sequencing was performed to evaluate the different inflammatory responses of L-WAT and ADSCs. We found significant gene expression changes in both experimental groups after TNFα incubation. However, ADSCs showed a more homogenous gene expression profile by predominantly expressing genes involved in immunomodulatory processes such as CCL19, CCL5, TNFSF15 and IL1b when compared to L-WAT, which reacted rather heterogeneously. As RNA sequencing between L-WAT and ADSCS treated with TNFα revealed that L-WAT responded very heterogeneously to TNFα treatment, we therefore conclude that ADSCs are more reliable and predictable when used therapeutically. Our study furthermore yields insight into potential biological processes regarding immune system response, inflammatory response, and cell activation. Our results can help to better understand the different immunomodulatory effects of L-WAT and ADSCs.
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Affiliation(s)
- Sara Taha
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (S.T.); (E.V.); (E.H.); (P.A.); (A.A.)
- Division of Hand, Plastic and Aesthetic Surgery, Ludwig-Maximilians-University (LMU), Pettenkoferstraße. 8a, 80336 Munich, Germany
| | - Elias Volkmer
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (S.T.); (E.V.); (E.H.); (P.A.); (A.A.)
- Department of Hand Surgery, Helios Klinikum München West, Steinerweg 5, 81241 Munich, Germany
| | - Elisabeth Haas
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (S.T.); (E.V.); (E.H.); (P.A.); (A.A.)
- Division of Hand, Plastic and Aesthetic Surgery, Ludwig-Maximilians-University (LMU), Pettenkoferstraße. 8a, 80336 Munich, Germany
| | - Paolo Alberton
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (S.T.); (E.V.); (E.H.); (P.A.); (A.A.)
| | - Tobias Straub
- Bioinformatics Unit, Biomedical Center Munich, Ludwig-Maximilians-University (LMU), Großhaderner Straße 9, 82152 Planegg-Martinsried, Germany;
| | - Diana David-Rus
- Institute for Medical Information Processing, Biometry, and Epidemiology (IBE), Ludwig-Maximilians-University (LMU), Marchioninistr. 15, 81377 Munich, Germany;
| | - Attila Aszodi
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (S.T.); (E.V.); (E.H.); (P.A.); (A.A.)
| | - Riccardo Giunta
- Division of Hand, Plastic and Aesthetic Surgery, Ludwig-Maximilians-University (LMU), Pettenkoferstraße. 8a, 80336 Munich, Germany
| | - Maximilian Michael Saller
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (S.T.); (E.V.); (E.H.); (P.A.); (A.A.)
- Correspondence: ; Tel.: +49-89-4400-55486
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Klemenz AC, Meyer J, Ekat K, Bartels J, Traxler S, Schubert JK, Kamp G, Miekisch W, Peters K. Differences in the Emission of Volatile Organic Compounds (VOCs) between Non-Differentiating and Adipogenically Differentiating Mesenchymal Stromal/Stem Cells from Human Adipose Tissue. Cells 2019; 8:cells8070697. [PMID: 31295931 PMCID: PMC6678290 DOI: 10.3390/cells8070697] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/03/2019] [Accepted: 07/09/2019] [Indexed: 12/23/2022] Open
Abstract
Metabolic characterization of human adipose tissue-derived mesenchymal stromal/stem cells (ASCs) is of importance in stem cell research. The monitoring of the cell status often requires cell destruction. An analysis of volatile organic compounds (VOCs) in the headspace above cell cultures might be a noninvasive and nondestructive alternative to in vitro analysis. Furthermore, VOC analyses permit new insight into cellular metabolism due to their view on volatile compounds. Therefore, the aim of our study was to compare VOC profiles in the headspace above nondifferentiating and adipogenically differentiating ASCs. To this end, ASCs were cultivated under nondifferentiating and adipogenically differentiating conditions for up to 21 days. At different time points the headspace samples were preconcentrated by needle trap micro extraction and analyzed by gas chromatography/mass spectrometry. Adipogenic differentiation was assessed at equivalent time points. Altogether the emissions of 11 VOCs showed relevant changes and were analyzed in more detail. A few of these VOCs, among them acetaldehyde, were significantly different in the headspace of adipogenically differentiating ASCs and appeared to be linked to metabolic processes. Furthermore, our data indicate that VOC headspace analysis might be a suitable, noninvasive tool for the metabolic monitoring of (mesenchymal stem) cells in vitro.
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Affiliation(s)
- Ann-Christin Klemenz
- Department of Anesthesiology and Intensive Care Medicine, University Medical Centre Rostock, Schillingallee 35, 18057 Rostock, Germany
| | - Juliane Meyer
- Department of Cell Biology, University Medical Centre Rostock, Schillingallee 69, 18057 Rostock, Germany
| | - Katharina Ekat
- Department of Cell Biology, University Medical Centre Rostock, Schillingallee 69, 18057 Rostock, Germany
| | - Julia Bartels
- Department of Anesthesiology and Intensive Care Medicine, University Medical Centre Rostock, Schillingallee 35, 18057 Rostock, Germany
| | - Selina Traxler
- Department of Anesthesiology and Intensive Care Medicine, University Medical Centre Rostock, Schillingallee 35, 18057 Rostock, Germany
| | - Jochen K Schubert
- Department of Anesthesiology and Intensive Care Medicine, University Medical Centre Rostock, Schillingallee 35, 18057 Rostock, Germany
| | - Günter Kamp
- AMP-Lab GmbH, Mendelstr. 11, 48149 Münster, Germany
| | - Wolfram Miekisch
- Department of Anesthesiology and Intensive Care Medicine, University Medical Centre Rostock, Schillingallee 35, 18057 Rostock, Germany
| | - Kirsten Peters
- Department of Cell Biology, University Medical Centre Rostock, Schillingallee 69, 18057 Rostock, Germany.
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