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Ott R, Wüstenhagen C, Stiehm M, Schmitz KP, Siewert S, Schmidt W, Martin H, Grabow N, Kasten A, Liese J, Fechner C, Frerich B, Einnolf N. Experimental and numerical investigations of fluid flow in bioreactors for optimized in vitro stem cell loading in xenografts. Current Directions in Biomedical Engineering 2018. [DOI: 10.1515/cdbme-2018-0101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractIn tissue engineering and regenerative medicine mesenchymal stem cells (MSC) are widely used to replace and restore the function of dysfunctional or missing tissue. Recent studies have shown significant enhancements of the in vivo healing process following dentofacial bone augmentation procedures employing stem cell-loaded xenografts. We conducted experimental and numerical investigations in perfusion flow bioreactor-xenograft-systems to identify flow conditions as well as bioreactor design features that allow for homogeneous MSC-distribution in Geistlich Bio- Oss Block xenografts. Pressure gradient - velocity characteristics and flow distributions were investigated experimentally and numerically for two bioreactor designs at steady-state flow conditions with Reynolds numbers (Re) ranging from 0.01 ≤ Re ≤ 0.32. Distilled water at 20°C with a dynamic viscosity of 1.002 mPa∙s and a density of 998 kg/m3 was used. The geometry of the xenograft utilized in three-dimensional computational fluid dynamics (CFD) simulation was obtained by means of micro-computed tomography (μCT) at an isotropic spatial resolution of 9.5 μm. The permeability values calculated from the experimental data are in good accordance with the numerical results. The investigations showed that the increase of the inflow- and outflow-area diameter, as well as the decrease of the volumetric flow rate, result in a decreasing heterogeneity of the flow distribution within the xenograft. The calculated wall shear stress rates in the three-dimensional (3D) scaffold range from 1∙10-12Pa ≤ τ ≤ 0.2 Pa. Experimentally validated CFD simulations introduced in this study provide an applicable tool to assess optimal flow conditions for homogeneous MSC distribution in bioreactor-xenograft-systems.
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Affiliation(s)
- Robert Ott
- 1Institute for ImplantTechnology and Biomaterials e.V.,Rostock, Germany
| | | | - Michael Stiehm
- 1Institute for ImplantTechnology and Biomaterials e.V.,Rostock, Germany
| | - Klaus-Peter Schmitz
- 2Institute for ImplantTechnology and Biomaterials e.V.,Rostock, Germany
- 3Institute for Biomedical Engineering, Rostock University Medical Center,Rostock, Germany
| | - Stefan Siewert
- 1Institute for ImplantTechnology and Biomaterials e.V.,Rostock, Germany
| | - Wolfram Schmidt
- 3Institute for Biomedical Engineering, Rostock University Medical Center,Rostock, Germany
| | - Heiner Martin
- 3Institute for Biomedical Engineering, Rostock University Medical Center,Rostock, Germany
| | - Niels Grabow
- 3Institute for Biomedical Engineering, Rostock University Medical Center,Rostock, Germany
| | - Annika Kasten
- 4Department of Oral, Maxillofacial, and Plastic Surgery, Rostock University Medical Center,Rostock, Germany
| | - Jan Liese
- 4Department of Oral, Maxillofacial, and Plastic Surgery, Rostock University Medical Center,Rostock, Germany
| | - Carsten Fechner
- 4Department of Oral, Maxillofacial, and Plastic Surgery, Rostock University Medical Center,Rostock, Germany
| | - Bernhard Frerich
- 4Department of Oral, Maxillofacial, and Plastic Surgery, Rostock University Medical Center,Rostock, Germany
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Engel N, Adamus A, Frank M, Kraft K, Kühn J, Müller P, Nebe B, Kasten A, Seitz G. First evidence of SGPL1 expression in the cell membrane silencing the extracellular S1P siren in mammary epithelial cells. PLoS One 2018; 13:e0196854. [PMID: 29718989 PMCID: PMC5931664 DOI: 10.1371/journal.pone.0196854] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 04/20/2018] [Indexed: 11/19/2022] Open
Abstract
The bioactive lipid sphingosine-1-phosphate (S1P) is a main regulator of cell survival, proliferation, motility, and platelet aggregation, and it is essential for angiogenesis and lymphocyte trafficking. In that S1P acts as a second messenger intra- and extracellularly, it might promote cancer progression. The main cause is found in the high S1P concentration in the blood, which encourage cancer cells to migrate through the endothelial barrier into the blood vessels. The irreversible degradation of S1P is solely caused by the sphingosine-1-phosphate lyase (SGPL1). SGPL1 overexpression reduces cancer cell migration and therefore silences the endogenous S1P siren, which promotes cancer cell attraction-the main reason for metastasis. Since our previous metabolomics studies revealed an increased SGPL1 activity in association with successful breast cancer cell treatment in vitro, we further investigated expression and localization of SGPL1. Expression analyses confirmed a very low SGPL1 expression in all breast cancer samples, regardless of their subtype. Additionally, we were able to prove a novel SGPL expression in the cytoplasm membrane of non-tumorigenic breast cells by fusing three independent methods. The general SGPL1 downregulation and the loss of the plasma membrane expression resulted in S1P dependent stimulation of migration in the breast cancer cell lines MCF-7 and BT-20. Not only S1P stimulated migration could be repressed by overexpressing the natural SGPL1 variant not but also more general migratory activity was significantly reduced. Here, for the first time, we report on the SGPL1 plasma membrane location in human, non-malignant breast epithelial cell lines silencing the extracellular S1P siren in vitro, and thereby regulating pivotal cellular functions. Loss of this plasma membrane distribution as well as low SGPL1 expression levels could be a potential prognostic marker and a viable target for therapy. Therefore, the precise role of SGPL1 for cancer treatment should be evaluated.
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Affiliation(s)
- Nadja Engel
- Department of Pediatric Surgery, University Hospital Marburg, Baldingerstraße, Marburg, Germany
- Department of Cell Biology, University Medicine Rostock, Schillingallee, Rostock, Germany
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, Schillingallee, Rostock, Germany
- * E-mail: ,
| | - Anna Adamus
- Department of Pediatric Surgery, University Hospital Marburg, Baldingerstraße, Marburg, Germany
- Department of Cell Biology, University Medicine Rostock, Schillingallee, Rostock, Germany
| | - Marcus Frank
- Medical Biology and Electron Microscopy Centre, University Medicine Rostock, Strempelstraße, Rostock, Germany
| | - Karin Kraft
- Complementary Medicine, Center of Internal Medicine, University Medicine Rostock, Ernst-Heydemann-Straße, Rostock, Germany
| | - Juliane Kühn
- Department of Cell Biology, University Medicine Rostock, Schillingallee, Rostock, Germany
- Institute for Immunology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer, Greifswald-Insel Riems, Germany
| | - Petra Müller
- Department of Cell Biology, University Medicine Rostock, Schillingallee, Rostock, Germany
| | - Barbara Nebe
- Department of Cell Biology, University Medicine Rostock, Schillingallee, Rostock, Germany
| | - Annika Kasten
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, Schillingallee, Rostock, Germany
| | - Guido Seitz
- Department of Pediatric Surgery, University Hospital Marburg, Baldingerstraße, Marburg, Germany
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Öri F, Dietrich R, Ganz C, Dau M, Wolter D, Kasten A, Gerber T, Frerich B. Silicon-dioxide−polyvinylpyrrolidone as a wound dressing for skin defects in a murine model. J Craniomaxillofac Surg 2017; 45:99-107. [DOI: 10.1016/j.jcms.2016.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 08/12/2016] [Accepted: 10/06/2016] [Indexed: 10/20/2022] Open
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Kilian T, Fidler F, Kasten A, Nietzer S, Landgraf V, Weiß K, Walles H, Westphal F, Hackenberg S, Grüttner C, Steinke M. Stem cell labeling with iron oxide nanoparticles: impact of 3D culture on cell labeling maintenance. Nanomedicine (Lond) 2016; 11:1957-70. [PMID: 27456272 DOI: 10.2217/nnm-2016-0042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
AIM We aimed to analyze the suitability of nanoparticles (M4E) for safe human mesenchymal stem cell (hMSC) labeling and determined cell labeling maintenance in 2D and 3D culture. MATERIALS & METHODS We investigated cell-particle interaction and the particles' impact on cell viability, growth and proliferation. We analyzed cell labeling maintenance in 2D and 3D culture invasively and noninvasively. RESULTS M4E do not affect cell viability, growth and proliferation and do not cause chromosomal aberrations. Cell labeling maintenance is up to five-times higher in 3D conditions compared with 2D culture. CONCLUSION M4E allow safe hMSC labeling and noninvasive identification. Our hMSC-loaded, 3D tissue-engineered construct could serve as a graft for regenerative therapies, in which M4E-labeled hMSCs can migrate to their target.
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Affiliation(s)
- Teresa Kilian
- Fraunhofer Institute for Interfacial Engineering & Biotechnology IGB, Translational Center "Regenerative Therapies for Oncology & Musculoskeletal Diseases" - Würzburg branch, Röntgenring 11, 97070 Würzburg, Germany
| | - Florian Fidler
- Research Center Magnetic-Resonance-Bavaria, Am Hubland, 97074 Würzburg, Germany
| | - Annika Kasten
- Department of Oral & Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, Schillingallee 35, 18057 Rostock, Germany
| | - Sarah Nietzer
- Tissue Engineering & Regenerative Medicine, University Hospital Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Veronika Landgraf
- Tissue Engineering & Regenerative Medicine, University Hospital Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Katrin Weiß
- Tissue Engineering & Regenerative Medicine, University Hospital Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Heike Walles
- Fraunhofer Institute for Interfacial Engineering & Biotechnology IGB, Translational Center "Regenerative Therapies for Oncology & Musculoskeletal Diseases" - Würzburg branch, Röntgenring 11, 97070 Würzburg, Germany.,Tissue Engineering & Regenerative Medicine, University Hospital Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Fritz Westphal
- Micromod Partikeltechnologie GmbH, Friedrich-Barnewitz-Straße 4, 18119 Rostock, Germany
| | - Stephan Hackenberg
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic & Reconstructive Head & Neck Surgery, University Hospital Würzburg, Josef-Schneider-Straße 11, 97080 Würzburg, Germany
| | - Cordula Grüttner
- Micromod Partikeltechnologie GmbH, Friedrich-Barnewitz-Straße 4, 18119 Rostock, Germany
| | - Maria Steinke
- Fraunhofer Institute for Interfacial Engineering & Biotechnology IGB, Translational Center "Regenerative Therapies for Oncology & Musculoskeletal Diseases" - Würzburg branch, Röntgenring 11, 97070 Würzburg, Germany.,Tissue Engineering & Regenerative Medicine, University Hospital Würzburg, Röntgenring 11, 97070 Würzburg, Germany
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Kasten A, Naser T, Brüllhoff K, Fiedler J, Müller P, Möller M, Rychly J, Groll J, Brenner RE. Guidance of mesenchymal stem cells on fibronectin structured hydrogel films. PLoS One 2014; 9:e109411. [PMID: 25329487 PMCID: PMC4198140 DOI: 10.1371/journal.pone.0109411] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/29/2014] [Indexed: 12/21/2022] Open
Abstract
Designing of implant surfaces using a suitable ligand for cell adhesion to stimulate specific biological responses of stem cells will boost the application of regenerative implants. For example, materials that facilitate rapid and guided migration of stem cells would promote tissue regeneration. When seeded on fibronectin (FN) that was homogeneously immmobilized to NCO-sP(EO-stat-PO), which otherwise prevents protein binding and cell adhesion, human mesenchymal stem cells (MSC) revealed a faster migration, increased spreading and a more rapid organization of different cellular components for cell adhesion on fibronectin than on a glass surface. To further explore, how a structural organization of FN controls the behavior of MSC, adhesive lines of FN with varying width between 10 µm and 80 µm and spacings between 5 µm and 20 µm that did not allow cell adhesion were generated. In dependance on both line width and gaps, cells formed adjacent cell contacts, were individually organized in lines, or bridged the lines. With decreasing sizes of FN lines, speed and directionality of cell migration increased, which correlated with organization of the actin cytoskeleton, size and shape of the nuclei as well as of focal adhesions. Together, defined FN lines and gaps enabled a fine tuning of the structural organization of cellular components and migration. Microstructured adhesive substrates can mimic the extracellular matrix in vivo and stimulate cellular mechanisms which play a role in tissue regeneration.
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Affiliation(s)
- Annika Kasten
- Laboratory of Cell Biology, Rostock University Medical Center, Rostock, Germany
| | - Tamara Naser
- Division for Biochemistry of Joint and Connective Tissue Diseases of the Orthopedic Department, University of Ulm, Ulm, Germany
| | - Kristina Brüllhoff
- DWI Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Jörg Fiedler
- Division for Biochemistry of Joint and Connective Tissue Diseases of the Orthopedic Department, University of Ulm, Ulm, Germany
| | - Petra Müller
- Laboratory of Cell Biology, Rostock University Medical Center, Rostock, Germany
| | - Martin Möller
- DWI Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Joachim Rychly
- Laboratory of Cell Biology, Rostock University Medical Center, Rostock, Germany
- * E-mail:
| | - Jürgen Groll
- DWI Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
- Department and Chair of Functional Materials in Medicine and Dentistry, University of Würzburg, Würzburg, Germany
| | - Rolf E. Brenner
- Division for Biochemistry of Joint and Connective Tissue Diseases of the Orthopedic Department, University of Ulm, Ulm, Germany
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Kasten A, Grüttner C, Kühn JP, Bader R, Pasold J, Frerich B. Comparative in vitro study on magnetic iron oxide nanoparticles for MRI tracking of adipose tissue-derived progenitor cells. PLoS One 2014; 9:e108055. [PMID: 25244560 PMCID: PMC4171509 DOI: 10.1371/journal.pone.0108055] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 08/16/2014] [Indexed: 02/07/2023] Open
Abstract
Magnetic resonance imaging (MRI) using measurement of the transverse relaxation time (R2*) is to be considered as a promising approach for cell tracking experiments to evaluate the fate of transplanted progenitor cells and develop successful cell therapies for tissue engineering. While the relationship between core composition of nanoparticles and their MRI properties is well studied, little is known about possible effects on progenitor cells. This in vitro study aims at comparing two magnetic iron oxide nanoparticle types, single vs. multi-core nanoparticles, regarding their physico-chemical characteristics, effects on cellular behavior of adipose tissue-derived stem cells (ASC) like differentiation and proliferation as well as their detection and quantification by means of MRI. Quantification of both nanoparticle types revealed a linear correlation between labeling concentration and R2* values. However, according to core composition, different levels of labeling concentrations were needed to achieve comparable R2* values. Cell viability was not altered for all labeling concentrations, whereas the proliferation rate increased with increasing labeling concentrations. Likewise, deposition of lipid droplets as well as matrix calcification revealed to be highly dose-dependent particularly regarding multi-core nanoparticle-labeled cells. Synthesis of cartilage matrix proteins and mRNA expression of collagen type II was also highly dependent on nanoparticle labeling. In general, the differentiation potential was decreased with increasing labeling concentrations. This in vitro study provides the proof of principle for further in vivo tracking experiments of progenitor cells using nanoparticles with different core compositions but also provides striking evidence that combined testing of biological and MRI properties is advisable as improved MRI properties of multi-core nanoparticles may result in altered cell functions.
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Affiliation(s)
- Annika Kasten
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, Rostock, Germany
| | | | - Jens-Peter Kühn
- Department of Radiology and Neuroradiology, Greifswald University Medical Center, Greifswald, Germany
| | - Rainer Bader
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
| | - Juliane Pasold
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
| | - Bernhard Frerich
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, Rostock, Germany
- * E-mail:
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Kasten A, Müller P, Bulnheim U, Groll J, Bruellhoff K, Beck U, Steinhoff G, Möller M, Rychly J. Mechanical integrin stress and magnetic forces induce biological responses in mesenchymal stem cells which depend on environmental factors. J Cell Biochem 2010; 111:1586-97. [DOI: 10.1002/jcb.22890] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Battison JE, Kasten A, Leask MJM, Lowry JB, Wanklyn BM. Ferromagnetism in lithium holmium fluoride-LiHoF4. II. Optical and spectroscopic measurements. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3719/8/23/022] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bertram U, Kasten A, Lüllmann H, Ziegler A. Improved treatment of organophosphate intoxication by use of scopolamine or dexetimide. Experientia 1977; 33:1196-7. [PMID: 330209 DOI: 10.1007/bf01922324] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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