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Brosch PK, Korsa T, Taban D, Eiring P, Kreisz P, Hildebrand S, Neubauer J, Zimmermann H, Sauer M, Shirakashi R, Djuzenova CS, Sisario D, Sukhorukov VL. Correction: Brosch et al. Glucose and Inositol Transporters, SLC5A1 and SLC5A3, in Glioblastoma Cell Migration. Cancers 2022, 14, 5794. Cancers (Basel) 2023; 15:5139. [PMID: 37958481 PMCID: PMC10647605 DOI: 10.3390/cancers15215139] [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] [Received: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 11/15/2023] Open
Abstract
Philipp Kreisz was not included as an author in the original publication [...].
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Affiliation(s)
- Philippa K. Brosch
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
| | - Tessa Korsa
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
- Fraunhofer Institute for Biomedical Engineering (IBMT), 66280 Sulzbach, Germany; (J.N.); (H.Z.)
| | - Danush Taban
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
| | - Patrick Eiring
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
| | - Philipp Kreisz
- Julius-von-Sachs Institute, University of Würzburg, 97082 Würzburg, Germany;
| | - Sascha Hildebrand
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
| | - Julia Neubauer
- Fraunhofer Institute for Biomedical Engineering (IBMT), 66280 Sulzbach, Germany; (J.N.); (H.Z.)
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), 66280 Sulzbach, Germany; (J.N.); (H.Z.)
- Department of Molecular and Cellular Biotechnology, Saarland University, 66123 Saarbrücken, Germany
- Faculty of Marine Science, Universidad Católica del Norte, Coquimbo 1281, Chile
| | - Markus Sauer
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
| | - Ryo Shirakashi
- Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan
| | - Cholpon S. Djuzenova
- Department of Radiation Oncology, University Hospital of Würzburg, 97080 Würzburg, Germany;
| | - Dmitri Sisario
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
| | - Vladimir L. Sukhorukov
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany; (P.K.B.); (T.K.); (D.T.); (P.E.); (S.H.); (M.S.)
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Fischer B, Gwinner F, Gepp MM, Schulz A, Danz K, Dehne A, Katsen-Globa A, Neubauer JC, Gentile L, Zimmermann H. A highly versatile biopolymer-based platform for the maturation of human pluripotent stem cell-derived cardiomyocytes enables functional analysis in vitro and 3D printing of heart patches. J Biomed Mater Res A 2023; 111:1600-1615. [PMID: 37317666 DOI: 10.1002/jbm.a.37558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 05/02/2023] [Accepted: 05/04/2023] [Indexed: 06/16/2023]
Abstract
Human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs) represent a valuable tool for in vitro modeling of the cardiac niche and possess great potential in tissue engineering applications. However, conventional polystyrene-based cell culture substrates have adverse effects on cardiomyocytes in vitro due to the stress applied by a stiff substrate on contractile cells. Ultra-high viscosity alginates offer a unique versatility as tunable substrates for cardiac cell cultures due to their biocompatibility, flexible biofunctionalization, and stability. In this work, we analyzed the effect of alginate substrates on hPSC-CM maturity and functionality. Alginate substrates in high-throughput compatible culture formats fostered a more mature gene expression and enabled the simultaneous assessment of chronotropic and inotropic effects upon beta-adrenergic stimulation. Furthermore, we produced 3D-printed alginate scaffolds with differing mechanical properties and plated hPSC-CMs on the surface of these to create Heart Patches for tissue engineering applications. These exhibited synchronous macro-contractions in concert with more mature gene expression patterns and extensive intracellular alignment of sarcomeric structures. In conclusion, the combination of biofunctionalized alginates and human cardiomyocytes represents a valuable tool for both in vitro modeling and regenerative medicine, due to its beneficial effects on cardiomyocyte physiology, the possibility to analyze cardiac contractility, and its applicability as Heart Patches.
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Affiliation(s)
- B Fischer
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
- Fraunhofer Project Center for Stem Cell Process Engineering, Würzburg, Germany
| | - F Gwinner
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
| | - M M Gepp
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
- Fraunhofer Project Center for Stem Cell Process Engineering, Würzburg, Germany
| | - A Schulz
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
| | - K Danz
- Department of Bioprocessing and Bioanalytics, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
| | - A Dehne
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
| | - A Katsen-Globa
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
| | - J C Neubauer
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
- Fraunhofer Project Center for Stem Cell Process Engineering, Würzburg, Germany
| | - L Gentile
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
| | - H Zimmermann
- Department of Stem Cell & Cryo Technology, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
- Fraunhofer Project Center for Stem Cell Process Engineering, Würzburg, Germany
- Chair for Molecular and Cellular Biotechnology, Saarland University, Gebäude A, Saarbrücken, Germany
- Faculty of Marine Science, Universidad Católica del Norte, Coquimbo, Chile
- Department of Bioprocessing and Bioanalytics, Fraunhofer Institute for Biomedical Engineering, Sulzbach, Germany
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Chamignon C, Lelli M, Emsley JW, Luckhurst GR, Zimmermann H. Proton-decoupled deuterium NMR study of an asymmetric liquid crystal dimer having two nematic phases. Phys Rev E 2023; 108:024702. [PMID: 37723701 DOI: 10.1103/physreve.108.024702] [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] [Received: 10/12/2022] [Accepted: 05/08/2023] [Indexed: 09/20/2023]
Abstract
Proton-decoupled deuterium NMR spectra were obtained for an asymmetric liquid crystal dimer 1-(4-cyanobiphenyl-4'-yloxy)-6-(4-cyanobiphenyl-4'-yl)hexane (CB6OCB) containing a single -CD_{2}- group. The sample has two nematic liquid crystal phases: a twist-bend nematic, N_{TB}, at the lowest temperature followed by a uniaxial nematic, N_{U}, on increasing the temperature. Proton decoupling reduces the linewidths of the peaks in the deuterium spectrum from kHz to ∼100Hz, enabling quadrupolar splittings, Δν, to be obtained with enhanced precision as well as the dipolar coupling between deuterium nuclei within the CD_{2} group, hence enhancing the information content.
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Affiliation(s)
- C Chamignon
- Centre de RMN à Très Hauts Champs de Lyon (FRE 2034-CNRS, UCB Lyon 1, ENS Lyon), 5 rue de la Doua, 69100 Villeurbanne, France
| | - M Lelli
- Department of Chemistry "Ugo Schiff", Center for Magnetic Resonance (CERM), University of Florence, Sesto Fiorentino (FI) 50019, Italy
| | - J W Emsley
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - G R Luckhurst
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - H Zimmermann
- Department of Biomolecular Mechanisms, Max-Planck-Institut für Medizinische Forschung, D-69120 Heidelberg, Germany
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Meiser I, Alstrup M, Khalesi E, Stephan B, Speicher AM, Majer J, Kwok CK, Neubauer JC, Hansson M, Zimmermann H. Application-Oriented Bulk Cryopreservation of Human iPSCs in Cryo Bags Followed by Direct Inoculation in Scalable Suspension Bioreactors for Expansion and Neural Differentiation. Cells 2023; 12:1914. [PMID: 37508576 PMCID: PMC10378238 DOI: 10.3390/cells12141914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/13/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Stem cell-based therapies are promising tools for regenerative medicine and require bulk numbers of high-quality cells. Currently, cells are produced on demand and have a limited shelf-life as conventional cryopreservation is primarily designed for stock keeping. We present a study on bulk cryopreservation of the human iPSC lines UKKi011-A and BIONi010-C-41. By increasing cell concentration and volume, compared to conventional cryopreservation routines in cryo vials, one billion cells were frozen in 50 mL cryo bags. Upon thawing, the cells were immediately seeded in scalable suspension-based bioreactors for expansion to assess the stemness maintenance and for neural differentiation to assess their differentiation potential on the gene and protein levels. Both the conventional and bulk cryo approach show comparative results regarding viability and aggregation upon thawing and bioreactor inoculation. Reduced performance compared to the non-frozen control was compensated within 3 days regarding biomass yield. Stemness was maintained upon thawing in expansion. In neural differentiation, a delay of the neural marker expression on day 4 was compensated at day 9. We conclude that cryopreservation in cryo bags, using high cell concentrations and volumes, does not alter the cells' fate and is a suitable technology to avoid pre-cultivation and enable time- and cost-efficient therapeutic approaches with bulk cell numbers.
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Affiliation(s)
- Ina Meiser
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Monica Alstrup
- Cell Therapy R&D, Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Elham Khalesi
- Cell Therapy R&D, Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Bianca Stephan
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Anna M Speicher
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Julia Majer
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Chee Keong Kwok
- Cell Therapy R&D, Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Julia C Neubauer
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Mattias Hansson
- Cell Therapy R&D, Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Department of Molecular and Cellular Biotechnology, Saarland University, 66123 Saarbruecken, Germany
- Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo 1781421, Chile
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Stoecklein VM, Wunderlich S, Papazov B, Thon N, Schmutzer M, Schinner R, Zimmermann H, Liebig T, Ricke J, Liu H, Tonn JC, Schichor C, Stoecklein S. Perifocal Edema in Patients with Meningioma is Associated with Impaired Whole-Brain Connectivity as Detected by Resting-State fMRI. AJNR Am J Neuroradiol 2023:ajnr.A7915. [PMID: 37385680 PMCID: PMC10337612 DOI: 10.3174/ajnr.a7915] [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] [Received: 11/03/2022] [Accepted: 05/28/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND AND PURPOSE Meningiomas are intracranial tumors that usually carry a benign prognosis. Some meningiomas cause perifocal edema. Resting-state fMRI can be used to assess whole-brain functional connectivity, which can serve as a marker for disease severity. Here, we investigated whether the presence of perifocal edema in preoperative patients with meningiomas leads to impaired functional connectivity and if these changes are associated with cognitive function. MATERIALS AND METHODS Patients with suspected meningiomas were prospectively included, and resting-state fMRI scans were obtained. Impairment of functional connectivity was quantified on a whole-brain level using our recently published resting-state fMRI-based marker, called the dysconnectivity index. Using uni- and multivariate regression models, we investigated the association of the dysconnectivity index with edema and tumor volume as well as cognitive test scores. RESULTS Twenty-nine patients were included. In a multivariate regression analysis, there was a highly significant association of dysconnectivity index values and edema volume in the total sample and in a subsample of 14 patients with edema, when accounting for potential confounders like age and temporal SNR. There was no statistically significant association with tumor volume. Better neurocognitive performance was strongly associated with lower dysconnectivity index values. CONCLUSIONS Resting-state fMRI showed a significant association between impaired functional connectivity and perifocal edema, but not tumor volume, in patients with meningiomas. We demonstrated that better neurocognitive function was associated with less impairment of functional connectivity. This result shows that our resting-state fMRI marker indicates a detrimental influence of peritumoral brain edema on global functional connectivity in patients with meningiomas.
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Affiliation(s)
- V M Stoecklein
- From the Department of Neurosurgery (V.M.S., N.T., M.S., J.-C.T., C.S.)
- German Cancer Consortium (V.M.S., N.T., J.-C.T., C.S.)
| | - S Wunderlich
- Department of Radiology (S.W., B.P., R.S., J.R., S.S.)
| | - B Papazov
- Department of Radiology (S.W., B.P., R.S., J.R., S.S.)
| | - N Thon
- From the Department of Neurosurgery (V.M.S., N.T., M.S., J.-C.T., C.S.)
- German Cancer Consortium (V.M.S., N.T., J.-C.T., C.S.)
| | - M Schmutzer
- From the Department of Neurosurgery (V.M.S., N.T., M.S., J.-C.T., C.S.)
| | - R Schinner
- Department of Radiology (S.W., B.P., R.S., J.R., S.S.)
| | - H Zimmermann
- Department of Neuroradiology (H.Z., T.L.), Ludwig-Maximilians-University Munich, Munich, Germany
| | - T Liebig
- Department of Neuroradiology (H.Z., T.L.), Ludwig-Maximilians-University Munich, Munich, Germany
| | - J Ricke
- Department of Radiology (S.W., B.P., R.S., J.R., S.S.)
| | - H Liu
- Department of Radiology (H.L.), Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/Harvard Medical School, Boston, Massachusetts
- Department of Neuroscience (H.L.), Medical University of South Carolina, Charleston, South Carolina
| | - J-C Tonn
- From the Department of Neurosurgery (V.M.S., N.T., M.S., J.-C.T., C.S.)
- German Cancer Consortium (V.M.S., N.T., J.-C.T., C.S.)
| | - C Schichor
- From the Department of Neurosurgery (V.M.S., N.T., M.S., J.-C.T., C.S.)
- German Cancer Consortium (V.M.S., N.T., J.-C.T., C.S.)
| | - S Stoecklein
- Department of Radiology (S.W., B.P., R.S., J.R., S.S.)
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Wihan J, Karnatz I, Sébastien I, Kettenhofen R, Schmid B, Clausen C, Fischer B, Steeg R, Zimmermann H, Neubauer JC. Production of Human Neurogenin 2-Inducible Neurons in a Three-Dimensional Suspension Bioreactor. J Vis Exp 2023. [PMID: 37010312 DOI: 10.3791/65085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
The derivation of neuronal lineage cells from human induced pluripotent stem cells (hiPSCs) marked a milestone in brain research. Since their first advent, protocols have been continuously optimized and are now widely used in research and drug development. However, the very long duration of these conventional differentiation and maturation protocols and the increasing demand for high-quality hiPSCs and their neural derivatives raise the need for the adoption, optimization, and standardization of these protocols to large-scale production. This work presents a fast and efficient protocol for the differentiation of genetically modified, doxycycline-inducible neurogenin 2 (iNGN2)-expressing hiPSCs into neurons using a benchtop three-dimensional (3D) suspension bioreactor. In brief, single-cell suspensions of iNGN2-hiPSCs were allowed to form aggregates within 24 h, and neuronal lineage commitment was induced by the addition of doxycycline. Aggregates were dissociated after 2 days of induction and cells were either cryopreserved or replated for terminal maturation. The generated iNGN2 neurons expressed classical neuronal markers early on and formed complex neuritic networks within 1 week after replating, indicating an increasing maturity of neuronal cultures. In summary, a detailed step-by-step protocol for the fast generation of hiPSC-derived neurons in a 3D environment is provided that holds great potential as a starting point for disease modeling, phenotypic high-throughput drug screenings, and large-scale toxicity testing.
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Affiliation(s)
- Jeanette Wihan
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT
| | - Isabell Karnatz
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT
| | - Isabelle Sébastien
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT
| | - Ralf Kettenhofen
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT
| | | | | | - Benjamin Fischer
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT
| | - Rachel Steeg
- Fraunhofer UK Research Ltd, Technology and Innovation Centre
| | - Heiko Zimmermann
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT; Fraunhofer Institute for Biomedical Engineering IBMT; Department of Molecular and Cellular Biotechnology, Saarland University; Facultad de Ciencias del Mar, Universidad Católica del Norte
| | - Julia C Neubauer
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT; Fraunhofer Institute for Biomedical Engineering IBMT;
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Meiser I, Stephan B, Majer J, Altmaier S, Van De Sande D, Kreir M, Cabrera A, Pita Almenar JD, Neubauer JC, Ebneth A, Zimmermann H. Ready-to-use adherent hiPSC-derived neural co-cultures by vitrification. Cryobiology 2022. [DOI: 10.1016/j.cryobiol.2022.11.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Altmaier S, Meiser I, Majer J, Neubauer JC, Zimmermann H. Cryopreservation of iPSCs derived neural 3D cell models as a fundamental key technology in biotechnology and biomedicine. Cryobiology 2022. [DOI: 10.1016/j.cryobiol.2022.11.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Brosch PK, Korsa T, Taban D, Eiring P, Hildebrand S, Neubauer J, Zimmermann H, Sauer M, Shirakashi R, Djuzenova CS, Sisario D, Sukhorukov VL. Glucose and Inositol Transporters, SLC5A1 and SLC5A3, in Glioblastoma Cell Migration. Cancers (Basel) 2022; 14:5794. [PMID: 36497276 PMCID: PMC9738886 DOI: 10.3390/cancers14235794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/04/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022] Open
Abstract
(1) Background: The recurrence of glioblastoma multiforme (GBM) is mainly due to invasion of the surrounding brain tissue, where organic solutes, including glucose and inositol, are abundant. Invasive cell migration has been linked to the aberrant expression of transmembrane solute-linked carriers (SLC). Here, we explore the role of glucose (SLC5A1) and inositol transporters (SLC5A3) in GBM cell migration. (2) Methods: Using immunofluorescence microscopy, we visualized the subcellular localization of SLC5A1 and SLC5A3 in two highly motile human GBM cell lines. We also employed wound-healing assays to examine the effect of SLC inhibition on GBM cell migration and examined the chemotactic potential of inositol. (3) Results: While GBM cell migration was significantly increased by extracellular inositol and glucose, it was strongly impaired by SLC transporter inhibition. In the GBM cell monolayers, both SLCs were exclusively detected in the migrating cells at the monolayer edge. In single GBM cells, both transporters were primarily localized at the leading edge of the lamellipodium. Interestingly, in GBM cells migrating via blebbing, SLC5A1 and SLC5A3 were predominantly detected in nascent and mature blebs, respectively. (4) Conclusion: We provide several lines of evidence for the involvement of SLC5A1 and SLC5A3 in GBM cell migration, thereby complementing the migration-associated transportome. Our findings suggest that SLC inhibition is a promising approach to GBM treatment.
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Affiliation(s)
- Philippa K. Brosch
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Tessa Korsa
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
- Fraunhofer Institute for Biomedical Engineering (IBMT), 66280 Sulzbach, Germany
| | - Danush Taban
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Patrick Eiring
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Sascha Hildebrand
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Julia Neubauer
- Fraunhofer Institute for Biomedical Engineering (IBMT), 66280 Sulzbach, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), 66280 Sulzbach, Germany
- Department of Molecular and Cellular Biotechnology, Saarland University, 66123 Saarbrücken, Germany
- Faculty of Marine Science, Universidad Católica del Norte, Coquimbo 1281, Chile
| | - Markus Sauer
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Ryo Shirakashi
- Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan
| | - Cholpon S. Djuzenova
- Department of Radiation Oncology, University Hospital of Würzburg, 97080 Würzburg, Germany
| | - Dmitri Sisario
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Vladimir L. Sukhorukov
- Department of Biotechnology & Biophysics, Biocenter, University of Würzburg, 97074 Würzburg, Germany
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Gernert JA, Zimmermann H, Oswald E, Christmann T, Kümpfel T, Havla J. Clinical onset of CNS demyelinating disease after COVID-19 vaccination: denovo disease? Mult Scler Relat Disord 2022; 67:104175. [PMID: 36126540 PMCID: PMC9464312 DOI: 10.1016/j.msard.2022.104175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Clinical onset of multiple sclerosis (MSpostvacc) and myelin-oligodendrocyte-glycoprotein-antibody-associated disease (MOGADpostvacc) has been reported in association with SARS-CoV-2-vaccination. There is uncertainty as to whether this is causality (denovo disease) or temporal coincidence (manifestation of a preexisting, subclinical neuroinflammation). OBJECTIVES Comparing the clinical characteristics of MSpostvacc-patients versus patients with MS (PwMS) whose clinical onset occurred independently of vaccination (MSreference). METHODS Consecutive patients with clinical onset ≤30 days after SARS-CoV-2-vaccination were included. Clinical data, cerebrospinal fluid (CSF) parameters and magnetic resonance imaging (MRI) as well as optical coherence tomography (OCT) data were compared to an age- and sex-matched MSreference-cohort. RESULTS We identified 5 MSpostvacc and 1 MOGADpostvacc patients who developed their clinical onset ≤ 30 days after SARS-CoV-2-vaccination. Clinical characteristics, CSF, MRI and OCT parameters from MSpostvacc patients were comparable to the MSreference cohort and showed evidence of preexisting subclinical CNS disease. The single case with MOGADpostvacc clearly differed from PwMS in higher CSF cell counts, remission of MRI lesions during follow-up, and absence of oligoclonal bands. CONCLUSIONS Our case series indicates that MSpostvacc patients showed a rather typical initial manifestation in temporal association with SARS-CoV-2-vaccination and harbored preexisting subclinical neuroinflammation. This argues against the denovo development of MS in this cohort.
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Affiliation(s)
- J A Gernert
- Institute of Clinical Neuroimmunology, Ludwig-Maximilians University Munich, Munich, Germany; Department of Neurology, University Hospital Munich, Ludwig-Maximilians University Munich, Munich, Germany
| | - H Zimmermann
- Institute of Neuroradiology, LMU Hospital, Ludwig-Maximilians University Munich, Munich, Germany
| | - E Oswald
- Institute of Clinical Neuroimmunology, Ludwig-Maximilians University Munich, Munich, Germany
| | - T Christmann
- Institute of Clinical Neuroimmunology, Ludwig-Maximilians University Munich, Munich, Germany
| | - T Kümpfel
- Institute of Clinical Neuroimmunology, Ludwig-Maximilians University Munich, Munich, Germany; Biomedical Center and University Hospital, Ludwig-Maximilians University Munich, Munich, Germany
| | - J Havla
- Institute of Clinical Neuroimmunology, Ludwig-Maximilians University Munich, Munich, Germany; Biomedical Center and University Hospital, Ludwig-Maximilians University Munich, Munich, Germany; Data Integration for Future Medicine (DIFUTURE) Consortium, LMU Hospital, Ludwig-Maximilians University, Munich, Germany.
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11
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Kwok CK, Sébastien I, Hariharan K, Meiser I, Wihan J, Altmaier S, Karnatz I, Bauer D, Fischer B, Feile A, Cabrera-Socorro A, Rasmussen M, Holst B, Neubauer JC, Clausen C, Verfaillie C, Ebneth A, Hansson M, Steeg R, Zimmermann H. Scalable expansion of iPSC and their derivatives across multiple lineages. Reprod Toxicol 2022; 112:23-35. [PMID: 35595152 DOI: 10.1016/j.reprotox.2022.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 05/10/2022] [Accepted: 05/13/2022] [Indexed: 12/30/2022]
Abstract
Induced pluripotent stem cell (iPSC) technology enabled the production of pluripotent stem cell lines from somatic cells from a range of known genetic backgrounds. Their ability to differentiate and generate a wide variety of cell types has resulted in their use for various biomedical applications, including toxicity testing. Many of these iPSC lines are now registered in databases and stored in biobanks such as the European Bank for induced pluripotent Stem Cells (EBiSC), which can streamline the quality control and distribution of these individual lines. To generate the quantities of cells for banking and applications like high-throughput toxicity screening, scalable and robust methods need to be developed to enable the large-scale production of iPSCs. 3D suspension culture platforms are increasingly being used by stem cell researchers, owing to a higher cell output in a smaller footprint, as well as simpler scaling by increasing culture volume. Here we describe our strategies for successful scalable production of iPSCs using a benchtop bioreactor and incubator for 3D suspension cultures, while maintaining quality attributes expected of high-quality iPSC lines. Additionally, to meet the increasing demand for "ready-to-use" cell types, we report recent work to establish robust, scalable differentiation protocols to cardiac, neural, and hepatic fate to enable EBiSC to increase available research tools.
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Affiliation(s)
- Chee Keong Kwok
- Cell Therapy R&D, Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Måløv, Denmark
| | - Isabelle Sébastien
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany
| | - Krithika Hariharan
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany
| | - Ina Meiser
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66820 Sulzbach, Germany
| | - Jeanette Wihan
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany
| | - Saskia Altmaier
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66820 Sulzbach, Germany
| | - Isabell Karnatz
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany
| | - Dominic Bauer
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany
| | - Benjamin Fischer
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany
| | - Alexander Feile
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany
| | - Alfredo Cabrera-Socorro
- Neuroscience Therapeutic Area, Janssen Research & Development, Turnhoutseweg 30, 2340 Beerse, Belgium
| | | | - Bjørn Holst
- Bioneer A/S, Kogle Allé 2, 2970 Hørsholm, Denmark
| | - Julia C Neubauer
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany; Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66820 Sulzbach, Germany
| | | | - Catherine Verfaillie
- Department of Development and Regeneration, Stem Cell Institute, UZ Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
| | - Andreas Ebneth
- Neuroscience Therapeutic Area, Janssen Research & Development, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Mattias Hansson
- Cell Therapy R&D, Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Måløv, Denmark
| | - Rachel Steeg
- Fraunhofer UK Research Ltd, Technology and Innovation Centre, 99 George Street, G1 1RD Glasgow, United Kingdom
| | - Heiko Zimmermann
- Fraunhofer Project Center for Stem Cell Process Engineering, Fraunhofer Institute for Biomedical Engineering IBMT, Neunerplatz 2, 97082 Würzburg, Germany; Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66820 Sulzbach, Germany; Department of Molecular and Cellular Biotechnology, Saarland University, 66123 Saarbrücken, Germany; Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile.
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12
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Meiser I, Majer J, Katsen-Globa A, Schulz A, Schmidt K, Stracke F, Koutsouraki E, Witt G, Keminer O, Pless O, Gardner J, Claussen C, Gribbon P, Neubauer JC, Zimmermann H. Droplet-based vitrification of adherent human induced pluripotent stem cells on alginate microcarrier influenced by adhesion time and matrix elasticity. Cryobiology 2021; 103:57-69. [PMID: 34582849 DOI: 10.1016/j.cryobiol.2021.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 10/20/2022]
Abstract
The gold standard in cryopreservation is still conventional slow freezing of single cells or small aggregates in suspension, although major cell loss and limitation to non-specialised cell types in stem cell technology are known drawbacks. The requirement for rapidly available therapeutic and diagnostic cell types is increasing constantly. In the case of human induced pluripotent stem cells (hiPSCs) or their derivates, more sophisticated cryopreservation protocols are needed to address this demand. These should allow a preservation in their physiological, adherent state, an efficient re-cultivation and upscaling upon thawing towards high-throughput applications in cell therapies or disease modelling in drug discovery. Here, we present a novel vitrification-based method for adherent hiPSCs, designed for automated handling by microfluidic approaches and with ready-to-use potential e.g. in suspension-based bioreactors after thawing. Modifiable alginate microcarriers serve as a growth surface for adherent hiPSCs that were cultured in a suspension-based bioreactor and subsequently cryopreserved via droplet-based vitrification in comparison to conventional slow freezing. Soft (0.35%) versus stiff (0.65%) alginate microcarriers in concert with adhesion time variation have been examined. Findings revealed specific optimal conditions leading to an adhesion time and growth surface (matrix) elasticity dependent hypothesis on cryo-induced damaging regimes for adherent cell types. Deviations from the found optimum parameters give rise to membrane ruptures assessed via SEM and major cell loss after adherent vitrification. Applying the optimal conditions, droplet-based vitrification was superior to conventional slow freezing. A decreased microcarrier stiffness was found to outperform stiffer material regarding cell recovery, whereas the stemness characteristics of rewarmed hiPSCs were preserved.
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Affiliation(s)
- Ina Meiser
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany.
| | - Julia Majer
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany
| | - Alisa Katsen-Globa
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany
| | - André Schulz
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany
| | - Katharina Schmidt
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany
| | - Frank Stracke
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany
| | | | - Gesa Witt
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, ScreeningPort, 22525, Hamburg, Germany
| | - Oliver Keminer
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, ScreeningPort, 22525, Hamburg, Germany
| | - Ole Pless
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, ScreeningPort, 22525, Hamburg, Germany
| | - John Gardner
- Censo Biotechnologies Ltd, Roslin Midlothian, EH25 9RG, United Kingdom
| | - Carsten Claussen
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, ScreeningPort, 22525, Hamburg, Germany
| | - Philip Gribbon
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, ScreeningPort, 22525, Hamburg, Germany
| | - Julia C Neubauer
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany; Fraunhofer Project Centre for Stem Cell Process Engineering, 97081, Würzburg, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280, Sulzbach, Saar, Germany; Censo Biotechnologies Ltd, Roslin Midlothian, EH25 9RG, United Kingdom; Faculty of Marine Science, Universidad Católica Del Norte, 1781421, Coquimbo, Chile; Chair for Molecular and Cellular Biotechnology / Nanotechnology, Saarland University, 66123, Saarbrücken, Germany
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13
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Steeg R, Mueller SC, Mah N, Holst B, Cabrera-Socorro A, Stacey GN, De Sousa PA, Courtney A, Zimmermann H. EBiSC best practice: How to ensure optimal generation, qualification, and distribution of iPSC lines. Stem Cell Reports 2021; 16:1853-1867. [PMID: 34380020 PMCID: PMC8365092 DOI: 10.1016/j.stemcr.2021.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 12/24/2022] Open
Abstract
Disease-relevant human induced pluripotent stem cells (iPSCs) are generated worldwide for research purposes; however, without robust and practical ethical, legal, and quality standards, there is a high risk that their true potential will not be realized. Best practices for tissue procurement, iPSC reprogramming, day-to-day cultivation, quality control, and data management aligned with an ethical and legal framework must be included into daily operations to ensure their promise is maximized. Here we discuss key learning experiences from 7 years of operating the European Bank for induced Pluripotent Stem Cells (EBiSC) and recommend how to incorporate solutions into a daily management framework. Ethics for iPSCs must be explicit, GDPR compliant, and allow future research iPSC use restrictions are linked to consent, reprogramming, and gene editing Quality control must be implemented from primary tissue handling onward Robust data management is essential to ensure privacy and enable data sharing
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Affiliation(s)
| | - Sabine C Mueller
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Nancy Mah
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Bjørn Holst
- Bioneer A/S, Kogle Alle 2, 2970 Hørsholm, Denmark
| | - Alfredo Cabrera-Socorro
- Neuroscience Department, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Glyn N Stacey
- International Stem Cell Banking Initiative, 2 High Street, Barley, Herts SG88HZ, UK; National Stem Cell Resource Centre, Institute of Zoology, Chinese Academy of Sciences, Beijing 100190, China; Innovation Academy for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
| | - Paul A De Sousa
- Paul A. De Sousa, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh EH16 4SB, UK
| | | | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany; Molecular and Cellular Biotechnology/Nanotechnology, Saarland University, 66123 Saarbrücken, Germany; Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile.
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14
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Iacocca M, Chora J, Freiberger T, Carrie A, Sijbrands E, Wand H, Williams M, Zimmermann H, Leon A, Kurtz C, Tichy L, Alves A, Wang J, Cuchel M, Humphries S, Defesche J, Mata P, Santos R, Kullo I, Brunham L, Hegele R, Knowles J, Bourbon M. Specification of ACMG/AMP guidelines for standardized variant interpretation in familial hypercholesterolemia: On behalf of the clingen FH variant curation expert panel. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Vaccaroli R, Markus F, Danhardt S, Zimmermann H, Wisniewski F, Lucas P, Barge H. Grand Duchy of Luxembourg: a case study of a national master patient index in production since five years. BMC Med Inform Decis Mak 2020; 20:163. [PMID: 32680499 PMCID: PMC7368768 DOI: 10.1186/s12911-020-01178-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 08/20/2019] [Accepted: 07/02/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Unequivocal identification of patients is a precondition for a safe medical journey through different information systems (ISs) and software applications that are communicating and exchanging interoperable data. A master patient index (MPI) can facilitate this task. Being a repository of patient identity traits, a MPI allows an accurate surveillance of the patients' "medical identities". Up to 2014, the Grand Duchy of Luxembourg did not possess a MPI. Here, we describe our experience in the establishment of a national MPI for the Grand Duchy of Luxembourg. METHODS The different steps that were used to establish the MPI system are described. Firstly, through the identification of the suitable application and, secondly, through the implementation of the MPI to the eHealth national platform and its connection to the national health care system. In parallel to the first two phases, the identity management policies were defined and implemented. RESULTS Since 2014, when the MPI was integrated to the eHealth platform, we observed a continuous increase of identity profiles. At the latest update (31 December 2018), 2.418.336 identity profiles have been counted, including almost the totality of Luxembourgish residents (95.2%) as well as all the cross-border workers that are affiliated to the Luxembourgish social security system. An analysis of the identification domains connected to the platform highlighted a yearly increase in the usage rate of the identities by external applications (currently representing 70%). The evaluation of the quality of information contained in each identity profile showed low rejection rates (0.2%), indicating a high quality and a good level of completeness in regards to the required identity traits. CONCLUSIONS This paper presents the current state of patient identity management in Luxembourg and discusses how this synergistically supports the functioning of the national electronic health record (EHR) known as DSP (from the French Dossier de Soins Partagé) and the Luxemburgish health care system. The here described national MPI has refined the identification of patients, leading to an improvement of their safety during their medical journey. Nevertheless, the application regularly undergoes updates to better meet the current requirements of the Luxembourgish health system.
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Affiliation(s)
- Raffaella Vaccaroli
- Agence eSanté G.I.E., Agence Nationale des informations partagées dans le domaine de la santé, 125, route d'Esch, L-1471, Luxembourg, Luxembourg.
| | - Frédéric Markus
- Agence eSanté G.I.E., Agence Nationale des informations partagées dans le domaine de la santé, 125, route d'Esch, L-1471, Luxembourg, Luxembourg
| | - Samuel Danhardt
- Agence eSanté G.I.E., Agence Nationale des informations partagées dans le domaine de la santé, 125, route d'Esch, L-1471, Luxembourg, Luxembourg
| | - Heiko Zimmermann
- Agence eSanté G.I.E., Agence Nationale des informations partagées dans le domaine de la santé, 125, route d'Esch, L-1471, Luxembourg, Luxembourg
| | - Francois Wisniewski
- Agence eSanté G.I.E., Agence Nationale des informations partagées dans le domaine de la santé, 125, route d'Esch, L-1471, Luxembourg, Luxembourg
| | - Pascale Lucas
- Agence eSanté G.I.E., Agence Nationale des informations partagées dans le domaine de la santé, 125, route d'Esch, L-1471, Luxembourg, Luxembourg
| | - Hervé Barge
- Agence eSanté G.I.E., Agence Nationale des informations partagées dans le domaine de la santé, 125, route d'Esch, L-1471, Luxembourg, Luxembourg
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16
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Witt G, Keminer O, Leu J, Tandon R, Meiser I, Willing A, Winschel I, Abt JC, Brändl B, Sébastien I, Friese MA, Müller FJ, Neubauer JC, Claussen C, Zimmermann H, Gribbon P, Pless O. An automated and high-throughput-screening compatible pluripotent stem cell-based test platform for developmental and reproductive toxicity assessment of small molecule compounds. Cell Biol Toxicol 2020; 37:229-243. [PMID: 32564278 PMCID: PMC8012336 DOI: 10.1007/s10565-020-09538-0] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 06/02/2020] [Indexed: 12/02/2022]
Abstract
The embryonic stem cell test (EST) represents the only validated and accepted in vitro system for the detection and classification of compounds according to their developmental and reproductive teratogenic potency. The widespread implementation of the EST, however, in particular for routine application in pharmaceutical development, has not been achieved so far. Several drawbacks still limit the high-throughput screening of potential drug candidates in this format: The long assay period, the use of non-homogeneous viability assays, the low throughput analysis of marker protein expression and the compatibility of the assay procedures to automation. We have therefore introduced several advancements into the EST workflow: A reduction of the assay period, an introduction of homogeneous viability assays, and a straightforward analysis of marker proteins by flow cytometry and high content imaging to assess the impact of small molecules on differentiation capacity. Most importantly, essential parts of the assay procedure have been adapted to lab automation in 96-well format, thus enabling the interrogation of several compounds in parallel. In addition, extensive investigations were performed to explore the predictive capacity of this next-generation EST, by testing a set of well-known embryotoxicants that encompasses the full range of chemical-inherent embryotoxic potencies possible. Due to these significant improvements, the augmented workflow provides a basis for a sensitive, more rapid, and reproducible high throughput screening compatible platform to predict in vivo developmental toxicity from in vitro data which paves the road towards application in an industrial setting. •The embryonic stem cell test to predict teratogenicity was made automation-compatible. •Several key improvements to the assay procedure have been introduced to increase performance. •The workflow was adapted to human iPS cells and isogenic fibroblast donor cells. ![]()
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Affiliation(s)
- Gesa Witt
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany
| | - Oliver Keminer
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany
| | - Jennifer Leu
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany
| | - Rashmi Tandon
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany
| | - Ina Meiser
- Fraunhofer IBMT, 66280, Sulzbach, Saar, Germany
| | - Anne Willing
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251, Hamburg, Germany
| | - Ingo Winschel
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251, Hamburg, Germany
| | - Jana-Christin Abt
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany
| | - Björn Brändl
- Christian-Albrechts-Universität zu Kiel, ZIP gGmbH, 24105, Kiel, Germany
| | | | - Manuel A Friese
- Institut für Neuroimmunologie und Multiple Sklerose, Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, 20251, Hamburg, Germany
| | - Franz-Josef Müller
- Christian-Albrechts-Universität zu Kiel, ZIP gGmbH, 24105, Kiel, Germany
| | | | - Carsten Claussen
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany
| | - Heiko Zimmermann
- Fraunhofer IBMT, 66280, Sulzbach, Saar, Germany.,Lehrstuhl für Molekulare und Zelluläre Biotechnologie, Universität des Saarlandes, 66123, Saarbrücken, Germany.,Fakultät für Meereswissenschaften, Universidad Católica del Norte, CL-1781421, Coquimbo, Chile
| | - Philip Gribbon
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany
| | - Ole Pless
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.
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17
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Wochner I, Driess D, Zimmermann H, Haeufle DFB, Toussaint M, Schmitt S. Optimality Principles in Human Point-to-Manifold Reaching Accounting for Muscle Dynamics. Front Comput Neurosci 2020; 14:38. [PMID: 32499691 PMCID: PMC7242656 DOI: 10.3389/fncom.2020.00038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 04/14/2020] [Indexed: 11/26/2022] Open
Abstract
Human arm movements are highly stereotypical under a large variety of experimental conditions. This is striking due to the high redundancy of the human musculoskeletal system, which in principle allows many possible trajectories toward a goal. Many researchers hypothesize that through evolution, learning, and adaption, the human system has developed optimal control strategies to select between these possibilities. Various optimality principles were proposed in the literature that reproduce human-like trajectories in certain conditions. However, these studies often focus on a single cost function and use simple torque-driven models of motion generation, which are not consistent with human muscle-actuated motion. The underlying structure of our human system, with the use of muscle dynamics in interaction with the control principles, might have a significant influence on what optimality principles best model human motion. To investigate this hypothesis, we consider a point-to-manifold reaching task that leaves the target underdetermined. Given hypothesized motion objectives, the control input is generated using Bayesian optimization, which is a machine learning based method that trades-off exploitation and exploration. Using numerical simulations with Hill-type muscles, we show that a combination of optimality principles best predicts human point-to-manifold reaching when accounting for the muscle dynamics.
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Affiliation(s)
- Isabell Wochner
- Institute for Modelling and Simulation of Biomechanical Systems, University of Stuttgart, Stuttgart, Germany
| | - Danny Driess
- Machine Learning and Robotics Lab, University of Stuttgart, Stuttgart, Germany
| | - Heiko Zimmermann
- Khoury College of Computer Sciences, Northeastern University, Boston, MA, United States
| | - Daniel F B Haeufle
- Hertie Institute for Clinical Brain Research, and Werner Reichard Centre for Integrative Neuroscience, University of Tübingen, Tübingen, Germany
| | - Marc Toussaint
- Machine Learning and Robotics Lab, University of Stuttgart, Stuttgart, Germany
| | - Syn Schmitt
- Institute for Modelling and Simulation of Biomechanical Systems, University of Stuttgart, Stuttgart, Germany
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18
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Lermen D, Gwinner F, Bartel-Steinbach M, Mueller SC, Habermann JK, Balwir MB, Smits E, Virgolino A, Fiddicke U, Berglund M, Åkesson A, Bergstrom A, Leander K, Horvat M, Snoj Tratnik J, Posada de la Paz M, Castaño Calvo A, Esteban López M, von Briesen H, Zimmermann H, Kolossa-Gehring M. Towards Harmonized Biobanking for Biomonitoring: A Comparison of Human Biomonitoring-Related and Clinical Biorepositories. Biopreserv Biobank 2020; 18:122-135. [PMID: 32281895 PMCID: PMC7185365 DOI: 10.1089/bio.2019.0092] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Human biomonitoring (HBM) depends on high-quality human samples to identify status and trends in exposure and ensure comparability of results. In this context, much effort has been put into the development of standardized processes and quality assurance for sampling and chemical analysis, while effects of sample storage and shipment on sample quality have been less thoroughly addressed. To characterize the currently applied storage and shipment procedures within the consortium of the European Human Biomonitoring Initiative (HBM4EU), which aims at harmonization of HBM in Europe, a requirement analysis based on data from an online survey was conducted. In addition, the online survey was addressed to professionals in clinical biobanking represented by members of the European, Middle Eastern and African Society for Biopreservation and Biobanking (ESBB) to identify the current state-of-the-art in terms of sample storage and shipment. Results of this survey conducted in these two networks were compared to detect processes with potential for optimization and harmonization. In general, many similarities exist in sample storage and shipment procedures applied by ESBB members and HBM4EU partners and many requirements for ensuring sample quality are already met also by HBM4EU partners. Nevertheless, a need for improvement was identified for individual steps in sample storage, shipment, and related data management with potential impact on sample and data quality for HBM purposes. Based on these findings, recommendations for crucial first steps to further strengthen sample quality, and thus foster advancement in HBM on a pan-European level are given.
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Affiliation(s)
- Dominik Lermen
- Fraunhofer Institute for Biomedical Engineering IBMT, Biomonitoring & Biobanks, Sulzbach, Germany
- European, Middle Eastern & African Society for Biopreservation and Biobanking, Brussels, Belgium
- The European Human-Biomonitoring Initiative HBM4EU
| | - Frederik Gwinner
- Fraunhofer Institute for Biomedical Engineering IBMT, Biomonitoring & Biobanks, Sulzbach, Germany
- The European Human-Biomonitoring Initiative HBM4EU
| | - Martina Bartel-Steinbach
- Fraunhofer Institute for Biomedical Engineering IBMT, Biomonitoring & Biobanks, Sulzbach, Germany
- The European Human-Biomonitoring Initiative HBM4EU
| | - Sabine C. Mueller
- Fraunhofer Institute for Biomedical Engineering IBMT, Biomonitoring & Biobanks, Sulzbach, Germany
- The European Human-Biomonitoring Initiative HBM4EU
| | - Jens K. Habermann
- European, Middle Eastern & African Society for Biopreservation and Biobanking, Brussels, Belgium
- University Clinical Center Schleswig-Holstein, University of Luebeck, Translational Surgical Oncology and Biobanking, Luebeck, Germany
| | - Matharoo-Ball Balwir
- European, Middle Eastern & African Society for Biopreservation and Biobanking, Brussels, Belgium
- Nottingham University Hospital, Translational Research and Nottingham Health Science Biobank (NHSB), Nottingham, United Kingdom
| | - Elke Smits
- European, Middle Eastern & African Society for Biopreservation and Biobanking, Brussels, Belgium
- Antwerp University Hospital, University of Antwerp, Division of Medical Director, Edegem, Belgium
| | - Ana Virgolino
- The European Human-Biomonitoring Initiative HBM4EU
- Faculdade de Medicina, Instituto de Saúde Ambiental, Universidade de Lisboa, Lisboa, Portugal
| | - Ulrike Fiddicke
- The European Human-Biomonitoring Initiative HBM4EU
- German Environment Agency (Umweltbundesamt), Berlin, Germany
| | - Marika Berglund
- The European Human-Biomonitoring Initiative HBM4EU
- Institute of Environmental Medicine, Karolinska Institute, Institute of Environmental Medicine (IMM), Stockholm, Sweden
| | - Agneta Åkesson
- The European Human-Biomonitoring Initiative HBM4EU
- Institute of Environmental Medicine, Karolinska Institute, Institute of Environmental Medicine (IMM), Stockholm, Sweden
| | - Anna Bergstrom
- The European Human-Biomonitoring Initiative HBM4EU
- Institute of Environmental Medicine, Karolinska Institute, Institute of Environmental Medicine (IMM), Stockholm, Sweden
| | - Karin Leander
- The European Human-Biomonitoring Initiative HBM4EU
- Institute of Environmental Medicine, Karolinska Institute, Institute of Environmental Medicine (IMM), Stockholm, Sweden
| | - Milena Horvat
- The European Human-Biomonitoring Initiative HBM4EU
- Jožef Stefan Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Janja Snoj Tratnik
- The European Human-Biomonitoring Initiative HBM4EU
- Jožef Stefan Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Manuel Posada de la Paz
- The European Human-Biomonitoring Initiative HBM4EU
- Institute of Rare Diseases Research, CIBERER, EuroBiobanK, Instituto de Salud Carlos III, Madrid, Spain
| | - Argelia Castaño Calvo
- The European Human-Biomonitoring Initiative HBM4EU
- Centro Nacional de Sanidad Ambiental CNSA, Instituto de Salud Carlos III, Majadahonda, Spain
| | - Marta Esteban López
- The European Human-Biomonitoring Initiative HBM4EU
- Centro Nacional de Sanidad Ambiental CNSA, Instituto de Salud Carlos III, Majadahonda, Spain
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering IBMT, Biomonitoring & Biobanks, Sulzbach, Germany
- The European Human-Biomonitoring Initiative HBM4EU
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering IBMT, Biomonitoring & Biobanks, Sulzbach, Germany
- The European Human-Biomonitoring Initiative HBM4EU
| | - Marike Kolossa-Gehring
- The European Human-Biomonitoring Initiative HBM4EU
- German Environment Agency (Umweltbundesamt), Berlin, Germany
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Le Harzic R, Meiser I, Neubauer JC, Riemann I, Schiffer M, Stracke F, Zimmermann H. Diffraction-based technology for the monitoring of contraction dynamics in 3D and 2D tissue models. Biomed Opt Express 2020; 11:517-532. [PMID: 32206385 PMCID: PMC7041462 DOI: 10.1364/boe.11.000517] [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] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/31/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
We present a novel optical device developed for the monitoring of dynamic behavior in extended 3D-tissue models in various culture environments based on variations in their speckle patterns. The results presented point out the benefit of the technology in terms of detection, accuracy, sensitivity and a reasonable read-out speed as well as reproducibility for the measurements and monitoring of cardiac contractions. We show that the optical read-out technology is suitable for long time monitoring and for drug screening. The method is discussed and compared to other techniques, in particular calcium imaging. The device is flexible and easily adaptable to 2D and 3D-tissue model screenings using different culture environments. The technology can be parallelized for automated read-out of different multi-well-plate formats.
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Affiliation(s)
- Ronan Le Harzic
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Ina Meiser
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Julia C. Neubauer
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Fraunhofer Project Centre for Stem Cell Process Engineering, Neunerplatz 2, 97082 Würzburg, Germany
| | - Iris Riemann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Michael Schiffer
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Frank Stracke
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Saarland University, Chair Molecular & Cellular Biotechnology /Nanotechnology, 66123 Saarbrücken, Germany
- Faculty of Marine Science, Universidad Católica del Norte, Coquimbo, Chile
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20
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Memmel S, Sisario D, Zimmermann H, Sauer M, Sukhorukov VL, Djuzenova CS, Flentje M. FocAn: automated 3D analysis of DNA repair foci in image stacks acquired by confocal fluorescence microscopy. BMC Bioinformatics 2020; 21:27. [PMID: 31992200 PMCID: PMC6986076 DOI: 10.1186/s12859-020-3370-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 01/15/2020] [Indexed: 11/29/2022] Open
Abstract
Background Phosphorylated histone H2AX, also known as γH2AX, forms μm-sized nuclear foci at the sites of DNA double-strand breaks (DSBs) induced by ionizing radiation and other agents. Due to their specificity and sensitivity, γH2AX immunoassays have become the gold standard for studying DSB induction and repair. One of these assays relies on the immunofluorescent staining of γH2AX followed by microscopic imaging and foci counting. During the last years, semi- and fully automated image analysis, capable of fast detection and quantification of γH2AX foci in large datasets of fluorescence images, are gradually replacing the traditional method of manual foci counting. A major drawback of the non-commercial software for foci counting (available so far) is that they are restricted to 2D-image data. In practice, these algorithms are useful for counting the foci located close to the midsection plane of the nucleus, while the out-of-plane foci are neglected. Results To overcome the limitations of 2D foci counting, we present a freely available ImageJ-based plugin (FocAn) for automated 3D analysis of γH2AX foci in z-image stacks acquired by confocal fluorescence microscopy. The image-stack processing algorithm implemented in FocAn is capable of automatic 3D recognition of individual cell nuclei and γH2AX foci, as well as evaluation of the total foci number per cell nucleus. The FocAn algorithm consists of two parts: nucleus identification and foci detection, each employing specific sequences of auto local thresholding in combination with watershed segmentation techniques. We validated the FocAn algorithm using fluorescence-labeled γH2AX in two glioblastoma cell lines, irradiated with 2 Gy and given up to 24 h post-irradiation for repair. We found that the data obtained with FocAn agreed well with those obtained with an already available software (FoCo) and manual counting. Moreover, FocAn was capable of identifying overlapping foci in 3D space, which ensured accurate foci counting even at high DSB density of up to ~ 200 DSB/nucleus. Conclusions FocAn is freely available an open-source 3D foci analyzer. The user-friendly algorithm FocAn requires little supervision and can automatically count the amount of DNA-DSBs, i.e. fluorescence-labeled γH2AX foci, in 3D image stacks acquired by laser-scanning microscopes without additional nuclei staining.
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Affiliation(s)
- Simon Memmel
- Department of Radiation Oncology, University Hospital Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany
| | - Dmitri Sisario
- Lehrstuhl für Biotechnologie und Biophysik, Biozentrum, Universität Würzburg, 97074, Würzburg, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany.,Molekulare und Zellulare Biotechnologie/Nanotechnologie, Universität des Saarlandes, Campus Saarbrücken, 66123, Saarbrücken, Germany.,Marine Sciences, Universidad Catolica del Norte, Casa Central, Angamos 0610, Antafogasta/Coquimbo, Chile
| | - Markus Sauer
- Lehrstuhl für Biotechnologie und Biophysik, Biozentrum, Universität Würzburg, 97074, Würzburg, Germany
| | - Vladimir L Sukhorukov
- Lehrstuhl für Biotechnologie und Biophysik, Biozentrum, Universität Würzburg, 97074, Würzburg, Germany
| | - Cholpon S Djuzenova
- Department of Radiation Oncology, University Hospital Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany.
| | - Michael Flentje
- Department of Radiation Oncology, University Hospital Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany.
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21
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Shariatzadeh M, Chandra A, Wilson SL, McCall MJ, Morizur L, Lesueur L, Chose O, Gepp MM, Schulz A, Neubauer JC, Zimmermann H, Abranches E, Man J, O’Shea O, Stacey G, Hewitt Z, Williams DJ. Distributed automated manufacturing of pluripotent stem cell products. Int J Adv Manuf Technol 2020; 106:1085-1103. [PMID: 31983799 PMCID: PMC6954896 DOI: 10.1007/s00170-019-04516-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/27/2019] [Indexed: 05/04/2023]
Abstract
Establishing how to effectively manufacture cell therapies is an industry-level problem. Decentralised manufacturing is of increasing importance, and its challenges are recognised by healthcare regulators with deviations and comparability issues receiving specific attention from them. This paper is the first to report the deviations and other risks encountered when implementing the expansion of human pluripotent stem cells (hPSCs) in an automated three international site-decentralised manufacturing setting. An experimental demonstrator project expanded a human embryonal carcinoma cell line (2102Ep) at three development sites in France, Germany and the UK using the CompacT SelecT (Sartorius Stedim, Royston, UK) automated cell culture platform. Anticipated variations between sites spanned material input, features of the process itself and production system details including different quality management systems and personnel. Where possible, these were pre-addressed by implementing strategies including standardisation, cell bank mycoplasma testing and specific engineering and process improvements. However, despite such measures, unexpected deviations occurred between sites including software incompatibility and machine/process errors together with uncharacteristic contaminations. Many only became apparent during process proving or during the process run. Further, parameters including growth rate and viability discrepancies could only be determined post-run, preventing 'live' corrective measures. The work confirms the critical nature of approaches usually taken in Good Manufacturing Practice (GMP) manufacturing settings and especially emphasises the requirement for monitoring steps to be included within the production system. Real-time process monitoring coupled with carefully structured quality systems is essential for multiple site working including clarity of decision-making roles. Additionally, an over-reliance upon post-process visual microscopic comparisons has major limitations; it is difficult for non-experts to detect deleterious culture changes and such detection is slow.
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Affiliation(s)
- Maryam Shariatzadeh
- Centre for Biological Engineering, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU UK
| | - Amit Chandra
- Centre for Biological Engineering, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU UK
- Present Address: Yposkesi, 26, rue Henri Auguste-Desbruères, 91100 Corbeil-Essonnes, France
| | - Samantha L Wilson
- Centre for Biological Engineering, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU UK
| | - Mark J McCall
- Centre for Biological Engineering, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU UK
| | - Lise Morizur
- CECS/I-STEM, 28, rue Henri Auguste-Desbruères, 91100 Corbeil-Essonnes, France
| | - Léa Lesueur
- CECS/I-STEM, 28, rue Henri Auguste-Desbruères, 91100 Corbeil-Essonnes, France
| | - Olivier Chose
- CECS/I-STEM, 28, rue Henri Auguste-Desbruères, 91100 Corbeil-Essonnes, France
| | - Michael M. Gepp
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Fraunhofer Project Center for Stem Cell Process Engineering, Neunerplatz 2, 97082 Würzburg, Germany
| | - André Schulz
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Present Address: Knappschaft Eye Clinic Sulzbach, An der Klinik 10, 66280 Sulzbach, Germany
| | - Julia C. Neubauer
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Fraunhofer Project Center for Stem Cell Process Engineering, Neunerplatz 2, 97082 Würzburg, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Fraunhofer Project Center for Stem Cell Process Engineering, Neunerplatz 2, 97082 Würzburg, Germany
- Saarland University, 66123 Saarbruecken, Germany
- Universidad Católica del Norte, Coquimbo, Chile
| | - Elsa Abranches
- NISBC, Blanche Lane, South Mimms, Potters Bar, EN6 3QG UK
| | - Jennifer Man
- NISBC, Blanche Lane, South Mimms, Potters Bar, EN6 3QG UK
- Present Address: Oxfordshire, UK
| | - Orla O’Shea
- NISBC, Blanche Lane, South Mimms, Potters Bar, EN6 3QG UK
| | - Glyn Stacey
- NISBC, Blanche Lane, South Mimms, Potters Bar, EN6 3QG UK
- Present Address: Adaptimmune, 60 Jubilee Avenue, Milton Park, Abingdon, Oxfordshire OX14 4RX UK
| | - Zoe Hewitt
- Centre for Stem Cell Biology (CSCB), University of Sheffield, Western Bank, Sheffield, S10 2TN UK
| | - David J Williams
- Centre for Biological Engineering, Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU UK
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22
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Hagenfeld D, Zimmermann H, Korb K, El-Sayed N, Fricke J, Greiser KH, Kühnisch J, Linseisen J, Meisinger C, Schmitter M, Kim TS, Becher H. Periodontal Health and Use of Oral Health Services: A Comparison of Germans and Two Migrant Groups. Int J Environ Res Public Health 2019; 16:ijerph16163000. [PMID: 31434329 PMCID: PMC6720619 DOI: 10.3390/ijerph16163000] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/15/2019] [Accepted: 08/18/2019] [Indexed: 01/19/2023]
Abstract
A cross-sectional study was performed with 251 individuals, consisting of 127 Germans, 68 migrants from Turkey, and 56 resettlers (migrants from the former Soviet Union with German ancestors) to compare periodontal health status, with a special focus on associations with lifestyle and anthropometric factors, and use of dental health services. Maximal pocket depth was used as a clinical surrogate marker for periodontitis. Other variables were obtained by questionnaires administered by a Turkish or Russian interpreter. The age- and sex-adjusted prevalence of periodontitis was significantly higher in Turks (odds ratio (OR) 2.84, 95% CI = 1.53–5.26) and slightly higher in resettlers (OR = 1.33, 95% CI = 0.71–2.49). These differences are partly explained by a differential distribution of known risk factors for periodontitis. A full model showed a higher prevalence of maximal pocket depth above 5 mm in Turks (OR = 1.97, 95% CI = 0.99–3.92). Use of oral health services was significantly lower in the two migrant groups. Individuals who reported regular visits to a dentist had significantly less periodontitis, independent of migrant status. A reasonable conclusion is that, since oral health causes major chronic diseases and has a major effect on total health system expenditures, public health efforts both generally and specifically focused on migrant groups are warranted.
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Affiliation(s)
- Daniel Hagenfeld
- Section of Periodontology, Department of Conservative Dentistry, University of Heidelberg, 69120 Heidelberg, Germany
- Department of Periodontology and Restorative Dentistry, University-Hospital of Münster, 48149 Münster, Germany
| | - Heiko Zimmermann
- Institute of Global Health, University of Heidelberg, 69120 Heidelberg, Germany
| | - Katja Korb
- Department of Orthodontics, University of Heidelberg, 69120 Heidelberg, Germany
| | - Nihad El-Sayed
- Section of Periodontology, Department of Conservative Dentistry, University of Heidelberg, 69120 Heidelberg, Germany
| | - Julia Fricke
- Division of Cancer Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany
- Institute for Social Medicine, Epidemiology and Health Economics, Charité Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Karin Halina Greiser
- Division of Cancer Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany
| | - Jan Kühnisch
- Department of Conservative Dentistry and Periodontology, Ludwig-Maximilians-University of Munich, 80336 München, Germany
| | - Jakob Linseisen
- German Research Center for Environmental Health, Institute of Epidemiology II, Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Christa Meisinger
- German Research Center for Environmental Health, Institute of Epidemiology II, Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Marc Schmitter
- Department of Prosthodontics, University of Würzburg, 97070 Würzburg, Germany
| | - Ti-Sun Kim
- Section of Periodontology, Department of Conservative Dentistry, University of Heidelberg, 69120 Heidelberg, Germany
| | - Heiko Becher
- Institute of Global Health, University of Heidelberg, 69120 Heidelberg, Germany.
- Institute for Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
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23
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Kreiner A, Stracke F, Zimmermann H. On the assessment of the stability of vitrified cryo-media by differential scanning calorimetry: A new tool for biobanks to derive standard operating procedures for storage, access and transport. Cryobiology 2019; 89:26-34. [DOI: 10.1016/j.cryobiol.2019.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/22/2019] [Accepted: 06/12/2019] [Indexed: 11/28/2022]
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24
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Djuzenova CS, Fiedler V, Memmel S, Katzer A, Sisario D, Brosch PK, Göhrung A, Frister S, Zimmermann H, Flentje M, Sukhorukov VL. Differential effects of the Akt inhibitor MK-2206 on migration and radiation sensitivity of glioblastoma cells. BMC Cancer 2019; 19:299. [PMID: 30943918 PMCID: PMC6446411 DOI: 10.1186/s12885-019-5517-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 03/25/2019] [Indexed: 01/29/2023] Open
Abstract
Background Most tumor cells show aberrantly activated Akt which leads to increased cell survival and resistance to cancer radiotherapy. Therefore, targeting Akt can be a promising strategy for radiosensitization. Here, we explore the impact of the Akt inhibitor MK-2206 alone and in combination with the dual PI3K and mTOR inhibitor PI-103 on the radiation sensitivity of glioblastoma cells. In addition, we examine migration of drug-treated cells. Methods Using single-cell tracking and wound healing migration tests, colony-forming assay, Western blotting, flow cytometry and electrorotation we examined the effects of MK-2206 and PI-103 and/or irradiation on the migration, radiation sensitivity, expression of several marker proteins, DNA damage, cell cycle progression and the plasma membrane properties in two glioblastoma (DK-MG and SNB19) cell lines, previously shown to differ markedly in their migratory behavior and response to PI3K/mTOR inhibition. Results We found that MK-2206 strongly reduces the migration of DK-MG but only moderately reduces the migration of SNB19 cells. Surprisingly, MK-2206 did not cause radiosensitization, but even increased colony-forming ability after irradiation. Moreover, MK-2206 did not enhance the radiosensitizing effect of PI-103. The results appear to contradict the strong depletion of p-Akt in MK-2206-treated cells. Possible reasons for the radioresistance of MK-2206-treated cells could be unaltered or in case of SNB19 cells even increased levels of p-mTOR and p-S6, as compared to the reduced expression of these proteins in PI-103-treated samples. We also found that MK-2206 did not enhance IR-induced DNA damage, neither did it cause cell cycle distortion, nor apoptosis nor excessive autophagy. Conclusions Our study provides proof that MK-2206 can effectively inhibit the expression of Akt in two glioblastoma cell lines. However, due to an aberrant activation of mTOR in response to Akt inhibition in PTEN mutated cells, the therapeutic window needs to be carefully defined, or a combination of Akt and mTOR inhibitors should be considered. Electronic supplementary material The online version of this article (10.1186/s12885-019-5517-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Cholpon S Djuzenova
- Department of Radiation Oncology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany.
| | - Vanessa Fiedler
- Department of Radiation Oncology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany
| | - Simon Memmel
- Department of Radiation Oncology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany
| | - Astrid Katzer
- Department of Radiation Oncology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany
| | - Dmitri Sisario
- Department of Biotechnology and Biophysics, University of Würzburg, 97074, Würzburg, Germany
| | - Philippa K Brosch
- Department of Biotechnology and Biophysics, University of Würzburg, 97074, Würzburg, Germany
| | - Alexander Göhrung
- Department of Radiation Oncology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany
| | - Svenja Frister
- Department of Radiation Oncology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany
| | - Heiko Zimmermann
- Fraunhofer-Institut für Biomedizinische Technik, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany.,Professur für Molekulare und Zelluläre Biotechnologie/Nanotechnologie, Universität des Saarlandes, Campus Saarbrücken, 66123, Saarbrücken, Germany.,Marine Sciences, Universidad Católica del Norte, Casa Central, Angamos 0610, Antafogasta/Coquimbo, Chile
| | - Michael Flentje
- Department of Radiation Oncology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080, Würzburg, Germany
| | - Vladimir L Sukhorukov
- Department of Biotechnology and Biophysics, University of Würzburg, 97074, Würzburg, Germany
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25
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Abstract
Neuromyelitis optica spectrum disorders (NMOSD) are mostly relapsing inflammatory conditions of the central nervous system (CNS). In 55% of the cases of NMOSD optic neuritis (ON) is the most frequent first manifestation and can cause severe damage to the afferent visual system and the retina with resultant severe visual impairment. In recent years, investigations of the retina as part of the CNS by optical coherence tomography (OCT) has been shown to be a valid and efficient method for diagnostics and evaluation of the disease course in NMOSD. In addition, OCT not only shows severe damage of the afferent visual system due to multiple bouts of ON but also reveals NMOSD-specific intraretinal pathologies. The latter could be just as important for future differential diagnostics as for the evaluation of potential therapeutic targets. This article briefly reviews the principles of the OCT technique and describes its relevance for the diagnostics and assessment of disease course in NMOSD.
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Affiliation(s)
- F C Oertel
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member der Freien Universität Berlin, Humboldt-Universität zu Berlin und Berlin Institute of Health, Berlin, Deutschland
| | - H Zimmermann
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member der Freien Universität Berlin, Humboldt-Universität zu Berlin und Berlin Institute of Health, Berlin, Deutschland
| | - A U Brandt
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member der Freien Universität Berlin, Humboldt-Universität zu Berlin und Berlin Institute of Health, Berlin, Deutschland
| | - F Paul
- NeuroCure Clinical Research Center, Charité - Universitätsmedizin Berlin, corporate member der Freien Universität Berlin, Humboldt-Universität zu Berlin und Berlin Institute of Health, Berlin, Deutschland. .,Klinik für Neurologie, Charité - Universitätsmedizin Berlin, Berlin, Deutschland. .,Experimental and Clinical Research Center, Max-Delbrück-Centrum für Molekulare Medizin, Charité - Universitätsmedizin Berlin, Berlin, Deutschland.
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26
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Müllers Y, Meiser I, Stracke F, Riemann I, Lautenschläger F, Neubauer JC, Zimmermann H. Quantitative analysis of F-actin alterations in adherent human mesenchymal stem cells: Influence of slow-freezing and vitrification-based cryopreservation. PLoS One 2019; 14:e0211382. [PMID: 30682146 PMCID: PMC6347223 DOI: 10.1371/journal.pone.0211382] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 09/13/2018] [Accepted: 01/11/2019] [Indexed: 01/09/2023] Open
Abstract
Cryopreservation is an essential tool to meet the increasing demand for stem cells in medical applications. To ensure maintenance of cell function upon thawing, the preservation of the actin cytoskeleton is crucial, but so far there is little quantitative data on the influence of cryopreservation on cytoskeletal structures. For this reason, our study aims to quantitatively describe cryopreservation induced alterations to F-actin in adherent human mesenchymal stem cells, as a basic model for biomedical applications. Here we have characterised the actin cytoskeleton on single-cell level by calculating the circular standard deviation of filament orientation, F-actin content, and average filament length. Cryo-induced alterations of these parameters in identical cells pre and post cryopreservation provide the basis of our investigation. Differences between the impact of slow-freezing and vitrification are qualitatively analyzed and highlighted. Our analysis is supported by live cryo imaging of the actin cytoskeleton via two photon microscopy. We found similar actin alterations in slow-frozen and vitrified cells including buckling of actin filaments, reduction of F-actin content and filament shortening. These alterations indicate limited functionality of the respective cells. However, there are substantial differences in the frequency and time dependence of F-actin disruptions among the applied cryopreservation strategies; immediately after thawing, cytoskeletal structures show least disruption after slow freezing at a rate of 1°C/min. As post-thaw recovery progresses, the ratio of cells with actin disruptions increases, particularly in slow frozen cells. After 120 min of recovery the proportion of cells with an intact actin cytoskeleton is higher in vitrified than in slow frozen cells. Freezing at 10°C/min is associated with a high ratio of impaired cells throughout the post-thawing culture.
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Affiliation(s)
- Yannik Müllers
- Department of Cryo- and Stem Cell Technology, Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Ina Meiser
- Department of Cryo- and Stem Cell Technology, Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Frank Stracke
- Department of Cryo- and Stem Cell Technology, Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Iris Riemann
- Department of Cryo- and Stem Cell Technology, Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Franziska Lautenschläger
- Division of Cytoskeletal Fibers, Leibniz Institute for New Materials, Campus D2 2, Saarbrücken, Germany
- Chair for Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Julia C. Neubauer
- Department of Cryo- and Stem Cell Technology, Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
- Fraunhofer Project Centre for Stem Cell Process Engineering, Neunerplatz 2, Würzburg, Germany
| | - Heiko Zimmermann
- Department of Cryo- and Stem Cell Technology, Fraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
- Chair for Molecular and Cellular Biotechnology, Saarland University, Saarbruecken, Germany
- Faculty of Marine Science, Universidad Católica del Norte, Coquimbo, Chile
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Meiser I, Majer J, Kaindl J, Sommer A, Feldewerth J, Winkler J, Winner B, Neubauer J, Zimmermann H. Towards large-scale cryopreservation: sterile vitrification of adherent human induced pluripotent stem cells and their neural derivates. Cryobiology 2018. [DOI: 10.1016/j.cryobiol.2018.10.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kaindl J, Meiser I, Majer J, Sommer A, Krach F, Katsen-Globa A, Winkler J, Zimmermann H, Neubauer JC, Winner B. Zooming in on Cryopreservation of hiPSCs and Neural Derivatives: A Dual-Center Study Using Adherent Vitrification. Stem Cells Transl Med 2018; 8:247-259. [PMID: 30456912 PMCID: PMC6392398 DOI: 10.1002/sctm.18-0121] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/31/2018] [Accepted: 08/20/2018] [Indexed: 12/22/2022] Open
Abstract
Human induced pluripotent stem cells (hiPSCs) are an important tool for research and regenerative medicine, but their efficient cryopreservation remains a major challenge. The current gold standard is slow‐rate freezing of dissociated colonies in suspension, but low recovery rates limit immediate post‐thawing applicability. We tested whether ultrafast cooling by adherent vitrification improves post‐thawing survival in a selection of hiPSCs and small molecule neural precursor cells (smNPCs) from Parkinson's disease and controls. In a dual‐center study, we compared the results by immunocytochemistry (ICC), fluorescence‐activated cell sorting analysis, and RNA‐sequencing (RNA‐seq). Adherent vitrification was achieved in the so‐called TWIST substrate, a device combining cultivation, vitrification, storage, and post‐thawing cultivation. Adherent vitrification resulted in preserved confluency and significantly higher cell numbers, and viability at day 1 after thawing, while results were not significantly different at day 4 after thawing. RNA‐seq and ICC of hiPSCs revealed no change in gene expression and pluripotency markers, indicating that physical damage of slow‐rate freezing disrupts cellular membranes. Scanning electron microscopy showed preserved colony integrity by adherent vitrification. Experiments using smNPCs demonstrated that adherent vitrification is also applicable to neural derivatives of hiPSCs. Our data suggest that, compared to the state‐of‐the‐art slow‐rate freezing in suspension, adherent vitrification is an improved cryopreservation technique for hiPSCs and derivatives. stem cells translational medicine2019;8:247&259
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Affiliation(s)
- Johanna Kaindl
- Department of Stem Cell Biology, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Ina Meiser
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Julia Majer
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Annika Sommer
- Department of Stem Cell Biology, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Florian Krach
- Department of Stem Cell Biology, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany.,Department of Cellular and Molecular Medicine, University of California, San Diego, California
| | - Alisa Katsen-Globa
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Jürgen Winkler
- Department of Molecular Neurology, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany.,Chair for Molecular and Cellular Biotechnology/Nanotechnology, Saarland University, Saarbruecken, Germany.,Faculty of Marine Science, Universidad Católica del Norte, Coquimbo, Chile
| | - Julia C Neubauer
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany.,Fraunhofer Project Centre for Stem Cell Process Engineering, Würzburg, Germany
| | - Beate Winner
- Department of Stem Cell Biology, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
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29
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Fischer B, Meier A, Dehne A, Salhotra A, Tran TA, Neumann S, Schmidt K, Meiser I, Neubauer JC, Zimmermann H, Gentile L. A complete workflow for the differentiation and the dissociation of hiPSC-derived cardiospheres. Stem Cell Res 2018; 32:65-72. [DOI: 10.1016/j.scr.2018.08.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 08/08/2018] [Accepted: 08/13/2018] [Indexed: 12/15/2022] Open
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30
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Schulz A, Gepp MM, Stracke F, von Briesen H, Neubauer JC, Zimmermann H. Tyramine-conjugated alginate hydrogels as a platform for bioactive scaffolds. J Biomed Mater Res A 2018; 107:114-121. [PMID: 30256518 PMCID: PMC6585978 DOI: 10.1002/jbm.a.36538] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/14/2018] [Accepted: 08/29/2018] [Indexed: 02/04/2023]
Abstract
Alginate‐based hydrogels represent promising microenvironments for cell culture and tissue engineering, as their mechanical and porous characteristics are adjustable toward in vivo conditions. However, alginate scaffolds are bioinert and thus inhibit cellular interactions. To overcome this disadvantage, bioactive alginate surfaces were produced by conjugating tyramine molecules to high‐molecular‐weight alginates using the carbodiimide chemistry. Structural elucidation using nuclear magnetic resonance spectroscopy and contact angle measurements revealed a surface chemistry and wettability of tyramine‐alginate hydrogels similar to standard cell culture treated polystyrene. In contrast to stiff cell culture plastic, tyramine‐alginate scaffolds were found to be soft (60–80 kPa), meeting the elastic moduli of human tissues such as liver and heart. We further demonstrated an enhanced protein adsorption with increasing tyramine conjugation, stable for several weeks. Cell culture studies with human mesenchymal stem cells and human pluripotent stem cell‐derived cardiomyocytes qualified tyramine‐alginate hydrogels as bioactive platforms enabling cell adhesion and contraction on (structured) 2‐D layer and spherical matrices. Due to the alginate functionalization with tyramines, stable cell–matrix interactions were observed beneficial for an implementation in biology, biotechnology, and medicine toward efficient cell culture and tissue substitutes. © 2018 The Authors. Journal of Biomedical Materials Research Part A published by Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 114–121, 2019.
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Affiliation(s)
- André Schulz
- Fraunhofer Institute for Biomedical Engineering, Sulzbach, 66280, Germany
| | - Michael M Gepp
- Fraunhofer Institute for Biomedical Engineering, Sulzbach, 66280, Germany.,Fraunhofer Project Center for Stem Cell Process Engineering, Wuerzburg, 97082, Germany
| | - Frank Stracke
- Fraunhofer Institute for Biomedical Engineering, Sulzbach, 66280, Germany
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering, Sulzbach, 66280, Germany
| | - Julia C Neubauer
- Fraunhofer Institute for Biomedical Engineering, Sulzbach, 66280, Germany.,Fraunhofer Project Center for Stem Cell Process Engineering, Wuerzburg, 97082, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering, Sulzbach, 66280, Germany.,Chair for Molecular and Cellular Biotechnology, Saarland University, Saarbruecken, 66123, Germany.,Faculty of Marine Science, Universidad Católica del Norte, Coquimbo, Chile
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31
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Schulz A, Katsen-Globa A, Huber EJ, Mueller SC, Kreiner A, Pütz N, Gepp MM, Fischer B, Stracke F, von Briesen H, Neubauer JC, Zimmermann H. Poly(amidoamine)-alginate hydrogels: directing the behavior of mesenchymal stem cells with charged hydrogel surfaces. J Mater Sci Mater Med 2018; 29:105. [PMID: 29961123 PMCID: PMC6028859 DOI: 10.1007/s10856-018-6113-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 06/18/2018] [Indexed: 05/02/2023]
Abstract
The surface charge of a biomaterial represents a promising tool to direct cellular behavior, which is crucial for therapeutic approaches in regenerative medicine. To expand the understanding of how the material surface charge affects protein adsorption and mesenchymal stem cell behavior, differently charged surfaces with zeta potentials spanning from -25 mV to +15 mV were fabricated by the conjugation of poly(amidoamine) to alginate-based hydrogels. We showed that the increase of the biomaterials surface charge resulted in enhanced quantities of biologically available, surface-attached proteins. Since different surface charges were equalized after protein adsorption, mesenchymal stem cells interacted rather with diverse protein compositions instead of different surface features. Besides an enhanced cell attachment to increasingly positively charged surfaces, the cell spreading area and the expression of adhesion-related genes integrin α5 and tensin 1 were found to be increased after adhesion. Moreover, first results indicate a potential impact of the surface charge on mesenchymal stem cell differentiation towards bone and fat cells. The improved understanding of surface charge-related cell behavior has significant impact on the design of biomedical devices and artificial organs.
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Affiliation(s)
- André Schulz
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Alisa Katsen-Globa
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Esther J Huber
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Sabine C Mueller
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Asger Kreiner
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Norbert Pütz
- Faculty of Medicine, Saarland University, Kirrberger Straße 100, 66421, Homburg, Germany
| | - Michael M Gepp
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Benjamin Fischer
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Frank Stracke
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Julia C Neubauer
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering, Joseph-von-Fraunhofer-Weg 1, 66280, Sulzbach, Germany.
- Chair for Molecular and Cellular Biotechnology, Saarland University, 66123, Saarbruecken, Germany.
- Faculty of Marine Science, Universidad Católica del Norte, Coquimbo, Chile.
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Sisario D, Memmel S, Doose S, Neubauer J, Zimmermann H, Flentje M, Djuzenova CS, Sauer M, Sukhorukov VL. Nanostructure of DNA repair foci revealed by superresolution microscopy. FASEB J 2018; 32:fj201701435. [PMID: 29894665 DOI: 10.1096/fj.201701435] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Induction of DNA double-strand breaks (DSBs) by ionizing radiation leads to formation of micrometer-sized DNA-repair foci, whose organization on the nanometer-scale remains unknown because of the diffraction limit (∼200 nm) of conventional microscopy. Here, we applied diffraction-unlimited, direct stochastic optical-reconstruction microscopy ( dSTORM) with a lateral resolution of ∼20 nm to analyze the focal nanostructure of the DSB marker histone γH2AX and the DNA-repair protein kinase (DNA-PK) in irradiated glioblastoma multiforme cells. Although standard confocal microscopy revealed substantial colocalization of immunostained γH2AX and DNA-PK, in our dSTORM images, the 2 proteins showed very little (if any) colocalization despite their close spatial proximity. We also found that γH2AX foci consisted of distinct circular subunits ("nanofoci") with a diameter of ∼45 nm, whereas DNA-PK displayed a diffuse, intrafocal distribution. We conclude that γH2AX nanofoci represent the elementary, structural units of DSB repair foci, that is, individual γH2AX-containing nucleosomes. dSTORM-based γH2AX nanofoci counting and distance measurements between nanofoci provided quantitative information on the total amount of chromatin involved in DSB repair as well as on the number and longitudinal distribution of γH2AX-containing nucleosomes in a chromatin fiber. We thus estimate that a single focus involves between ∼0.6 and ∼1.1 Mbp of chromatin, depending on radiation treatment. Because of their ability to unravel the nanostructure of DSB-repair foci, dSTORM and related single-molecule localization nanoscopy methods will likely emerge as powerful tools in biology and medicine to elucidate the effects of DNA damaging agents in cells.-Sisario, D., Memmel, S., Doose, S., Neubauer, J., Zimmermann, H., Flentje, M., Djuzenova, C. S., Sauer, M., Sukhorukov, V. L. Nanostructure of DNA repair foci revealed by superresolution microscopy.
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Affiliation(s)
- Dmitri Sisario
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Simon Memmel
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Sören Doose
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Julia Neubauer
- Fraunhofer Institute for Biomedical Engineering (IBMT), Sulzbach, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Sulzbach, Germany
- Molekulare und Zelluläre Biotechnologie/Nanotechnologie, Universität des Saarlandes, Saarbrücken, Germany
- Marine Sciences, Universidad Católica del Norte, Antafogasta/Coquimbo, Chile
| | - Michael Flentje
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Cholpon S Djuzenova
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Markus Sauer
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Vladimir L Sukhorukov
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
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Memmel S, Sisario D, Zöller C, Fiedler V, Katzer A, Heiden R, Becker N, Eing L, Ferreira FLR, Zimmermann H, Sauer M, Flentje M, Sukhorukov VL, Djuzenova CS. Migration pattern, actin cytoskeleton organization and response to PI3K-, mTOR-, and Hsp90-inhibition of glioblastoma cells with different invasive capacities. Oncotarget 2018; 8:45298-45310. [PMID: 28424411 PMCID: PMC5542187 DOI: 10.18632/oncotarget.16847] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/20/2017] [Indexed: 01/15/2023] Open
Abstract
High invasiveness and resistance to chemo- and radiotherapy of glioblastoma multiforme (GBM) make it the most lethal brain tumor. Therefore, new treatment strategies for preventing migration and invasion of GBM cells are needed. Using two different migration assays, Western blotting, conventional and super-resolution (dSTORM) fluorescence microscopy we examine the effects of the dual PI3K/mTOR-inhibitor PI-103 alone and in combination with the Hsp90 inhibitor NVP-AUY922 and/or irradiation on the migration, expression of marker proteins, focal adhesions and F-actin cytoskeleton in two GBM cell lines (DK-MG and SNB19) markedly differing in their invasive capacity. Both lines were found to be strikingly different in morphology and migration behavior. The less invasive DK-MG cells maintained a polarized morphology and migrated in a directionally persistent manner, whereas the highly invasive SNB19 cells showed a multipolar morphology and migrated randomly. Interestingly, a single dose of 2 Gy accelerated wound closure in both cell lines without affecting their migration measured by single-cell tracking. PI-103 inhibited migration of DK-MG (p53 wt, PTEN wt) but not of SNB19 (p53 mut, PTEN mut) cells probably due to aberrant reactivation of the PI3K pathway in SNB19 cells treated with PI-103. In contrast, NVP-AUY922 exerted strong anti-migratory effects in both cell lines. Inhibition of cell migration was associated with massive morphological changes and reorganization of the actin cytoskeleton. Our results showed a cell line-specific response to PI3K/mTOR inhibition in terms of GBM cell motility. We conclude that anti-migratory agents warrant further preclinical investigation as potential therapeutics for treatment of GBM.
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Affiliation(s)
- Simon Memmel
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Dmitri Sisario
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany.,Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Caren Zöller
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Vanessa Fiedler
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Astrid Katzer
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Robin Heiden
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Nicholas Becker
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Lorenz Eing
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Fábio L R Ferreira
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Heiko Zimmermann
- Fraunhofer-Institut für Biomedizinische Technik, Sulzbach, Germany.,Molekulare und Zelluläre Biotechnologie/Nanotechnologie, Universität des Saarlandes, Saarbrücken, Germany
| | - Markus Sauer
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Michael Flentje
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Vladimir L Sukhorukov
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Cholpon S Djuzenova
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
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34
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Zimmermann H, Meise S, Khujakulov A, Magaña A, Saenz A, Eichmann U. Limit on Excitation and Stabilization of Atoms in Intense Optical Laser Fields. Phys Rev Lett 2018; 120:123202. [PMID: 29694089 DOI: 10.1103/physrevlett.120.123202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Indexed: 06/08/2023]
Abstract
Atomic excitation in strong optical laser fields has been found to take place even at intensities exceeding saturation. The concomitant acceleration of the atom in the focused laser field has been considered a strong link to, if not proof of, the existence of the so-called Kramers-Henneberger (KH) atom, a bound atomic system in an intense laser field. Recent findings have moved the importance of the KH atom from being purely of theoretical interest toward real world applications; for instance, in the context of laser filamentation. Considering this increasing importance, we explore the limits of strong-field excitation in optical fields, which are basically imposed by ionization through the spatial field envelope and the field propagation.
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Affiliation(s)
- H Zimmermann
- Max-Born-Institute, Max-Born-Strasse 2a, 12489 Berlin, Germany
| | - S Meise
- Max-Born-Institute, Max-Born-Strasse 2a, 12489 Berlin, Germany
| | - A Khujakulov
- AG Moderne Optik, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - A Magaña
- AG Moderne Optik, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - A Saenz
- AG Moderne Optik, Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - U Eichmann
- Max-Born-Institute, Max-Born-Strasse 2a, 12489 Berlin, Germany
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35
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Beerwerth J, Storek M, Greim D, Lueg J, Siegel R, Cetinkaya B, Hiller W, Zimmermann H, Senker J, Böhmer R. Two-site jumps in dimethyl sulfone studied by one- and two-dimensional 17O NMR spectroscopy. J Magn Reson 2018; 288:84-94. [PMID: 29438834 DOI: 10.1016/j.jmr.2018.01.016] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/23/2018] [Accepted: 01/27/2018] [Indexed: 06/08/2023]
Abstract
Polycrystalline dimethyl sulfone is studied using central-transition oxygen-17 exchange NMR. The quadrupolar and chemical shift tensors are determined by combining quantum chemical calculations with line shape analyses of rigid-lattice spectra measured for stationary and rotating samples at several external magnetic fields. Quantum chemical computations predict that the largest principal axes of the chemical shift anisotropy and electrical field gradient tensors enclose an angle of about 73°. This prediction is successfully tested by comparison with absorption spectra recorded at three different external magnetic fields. The experimental one-dimensional motionally narrowed spectra and the two-dimensional exchange spectrum are compatible with model calculations involving jumps of the molecules about their two-fold symmetry axis. This motion is additionally investigated by means of two-time stimulated-echo spectroscopy which allows for a determination of motional correlation functions over a wider temperature range than previously reported using carbon and deuteron NMR. On the basis of suitable second-order quadrupolar frequency distributions, sin-sin stimulated-echo amplitudes are calculated for a two-site model in the limit of vanishing evolution time and compared with experimental findings. The present study thus establishes oxygen-17 NMR as a powerful method that will be particularly useful for the study of solids and liquids devoid of nuclei governed by first-order anisotropies.
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Affiliation(s)
- J Beerwerth
- Fakultät Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - M Storek
- Fakultät Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - D Greim
- Anorganische Chemie III, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - J Lueg
- Fakultät Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - R Siegel
- Anorganische Chemie III, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - B Cetinkaya
- Fakultät Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - W Hiller
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - H Zimmermann
- Department of Biomolecular Mechanisms, Max Planck-Institut für Medizinische Forschung, 69120 Heidelberg, Germany
| | - J Senker
- Anorganische Chemie III, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - R Böhmer
- Fakultät Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany.
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Djuzenova CS, Fiedler V, Katzer A, Michel K, Deckert S, Zimmermann H, Sukhorukov VL, Flentje M. Dual PI3K- and mTOR-inhibitor PI-103 can either enhance or reduce the radiosensitizing effect of the Hsp90 inhibitor NVP-AUY922 in tumor cells: The role of drug-irradiation schedule. Oncotarget 2018; 7:38191-38209. [PMID: 27224913 PMCID: PMC5122382 DOI: 10.18632/oncotarget.9501] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 05/01/2016] [Indexed: 12/12/2022] Open
Abstract
Inhibition of Hsp90 can increase the radiosensitivity of tumor cells. However, inhibition of Hsp90 alone induces the anti-apoptotic Hsp70 and thereby decreases radiosensitivity. Therefore, preventing Hsp70 induction can be a promising strategy for radiosensitization. PI-103, an inhibitor of PI3K and mTOR, has previously been shown to suppress the up-regulation of Hsp70. Here, we explore the impact of combining PI-103 with the Hsp90 inhibitor NVP-AUY922 in irradiated glioblastoma and colon carcinoma cells. We analyzed the cellular response to drug-irradiation treatments by colony-forming assay, expression of several marker proteins, cell cycle progression and induction/repair of DNA damage. Although PI-103, given 24 h prior to irradiation, slightly suppressed the NVP-AUY922-mediated up-regulation of Hsp70, it did not cause radiosensitization and even diminished the radiosensitizing effect of NVP-AUY922. This result can be explained by the activation of PI3K and ERK pathways along with G1-arrest at the time of irradiation. In sharp contrast, PI-103 not only exerted a radiosensitizing effect but also strongly enhanced the radiosensitization by NVP-AUY922 when both inhibitors were added 3 h before irradiation and kept in culture for 24 h. Possible reasons for the observed radiosensitization under this drug-irradiation schedule may be a down-regulation of PI3K and ERK pathways during or directly after irradiation, increased residual DNA damage and strong G2/M arrest 24 h thereafter. We conclude that duration of drug treatment before irradiation plays a key role in the concomitant targeting of PI3K/mTOR and Hsp90 in tumor cells.
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Affiliation(s)
- Cholpon S Djuzenova
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Vanessa Fiedler
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Astrid Katzer
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Konstanze Michel
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Stefanie Deckert
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany
| | - Heiko Zimmermann
- Fraunhofer-Institut für Biomedizinische Technik, St. Ingbert and Lehrstuhl für Molekulare und Zelluläre Biotechnologie/Nanotechnologie, Universität des Saarlandes, Saarbrücken, Germany
| | - Vladimir L Sukhorukov
- Department of Biotechnology and Biophysics, University of Würzburg, Würzburg, Germany
| | - Michael Flentje
- Department of Radiation Oncology, University Hospital of Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
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Abstract
OBJECTIVE To assess the epidemiological association of smoking status and tinnitus with a systematic review and meta-analysis and to estimate the population attributable risk in Germany. DATA SOURCES A systematic literature search in PubMed and ISI-Web of Science Core Collection resulted in 1026 articles that were indexed until 15 September 2015. Additionally, proceedings of the international tinnitus seminars and reference lists of relevant articles were screened. STUDY SELECTION Two reviewers searched independently for epidemiological studies. Tinnitus as a manifestation of tumours, vascular malformations, specific syndromes or as a consequence of surgical and medical treatment was not considered. Moreover, studies conducted among patients of ear, nose and throat clinics were excluded. DATA EXTRACTION If only raw data were provided, effect sizes were calculated. Further unpublished data were received by corresponding authors. DATA SYNTHESIS Data of 20 studies were pooled. Current smoking (OR 1.21, 95% CI 1.09 to 1.35), former smoking (OR 1.13, 95% CI 1.01 to 1.26) and ever smoking (OR 1.20, 95% CI 1.11 to 1.30) were significantly associated with tinnitus. Moreover, sensitivity analyses for severe tinnitus (OR 1.32, 95% CI 1.10 to 1.58) and for studies of superior quality (OR 1.15, 95% CI 1.03 to 1.29) showed increased risks. According to this, the population attributable risk estimate in Germany is 3.5%. CONCLUSION There is sufficient evidence that smoking is associated with tinnitus. As the review mainly consists of cross-sectional studies, the observed correlation does not give evidence of a causal relationship. Due to the impact of various confounders, further research is needed to provide more evidence on the strength of association and causal relationships.
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Affiliation(s)
- Annette Veile
- Institute of Public Health, Unit of Epidemiology and Biostatistics, University of Heidelberg, Heidelberg, Germany
| | - Heiko Zimmermann
- Institute of Public Health, Unit of Epidemiology and Biostatistics, University of Heidelberg, Heidelberg, Germany
| | - Eva Lorenz
- Institute of Public Health, Unit of Epidemiology and Biostatistics, University of Heidelberg, Heidelberg, Germany
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center Mainz, Mainz, Germany
| | - Heiko Becher
- Institute of Public Health, Unit of Epidemiology and Biostatistics, University of Heidelberg, Heidelberg, Germany
- Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Emsley JW, Lelli M, Luckhurst GR, Zimmermann H. Publisher's Note: ^{13}C NMR study of the director distribution adopted by the modulated nematic phases formed by liquid-crystal dimers with odd numbers of atoms in their spacers [Phys. Rev. E 96, 062702 (2017)]. Phys Rev E 2018; 97:029903. [PMID: 29548113 DOI: 10.1103/physreve.97.029903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Indexed: 06/08/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevE.96.062702.
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Schultz A, Germann A, Fuss M, Sarzotti-Kelsoe M, Ozaki DA, Montefiori DC, Zimmermann H, von Briesen H. Validation of an automated system for aliquoting of HIV-1 Env-pseudotyped virus stocks. PLoS One 2018; 13:e0190669. [PMID: 29300769 PMCID: PMC5754138 DOI: 10.1371/journal.pone.0190669] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 12/19/2017] [Indexed: 11/17/2022] Open
Abstract
The standardized assessments of HIV-specific immune responses are of main interest in the preclinical and clinical stage of HIV-1 vaccine development. In this regard, HIV-1 Env-pseudotyped viruses play a central role for the evaluation of neutralizing antibody profiles and are produced according to Good Clinical Laboratory Practice- (GCLP-) compliant manual and automated procedures. To further improve and complete the automated production cycle an automated system for aliquoting HIV-1 pseudovirus stocks has been implemented. The automation platform consists of a modified Tecan-based system including a robot platform for handling racks containing 48 cryovials, a Decapper, a tubing pump and a safety device consisting of ultrasound sensors for online liquid level detection of each individual cryovial. With the aim to aliquot the HIV-1 pseudoviruses in an automated manner under GCLP-compliant conditions a validation plan was developed where the acceptance criteria—accuracy, precision as well as the specificity and robustness—were defined and summarized. By passing the validation experiments described in this article the automated system for aliquoting has been successfully validated. This allows the standardized and operator independent distribution of small-scale and bulk amounts of HIV-1 pseudovirus stocks with a precise and reproducible outcome to support upcoming clinical vaccine trials.
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Affiliation(s)
- Anke Schultz
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Anja Germann
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Martina Fuss
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
| | - Marcella Sarzotti-Kelsoe
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Daniel A Ozaki
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, United States of America
| | - David C Montefiori
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany.,Molecular and Cellular Biotechnology/Nanotechnology, Saarland University, Saarbrücken, Germany.,Marine Sciences Universidad Católica del Norte, Antafogasta/Coquimbo, Chile
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, Sulzbach, Germany
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40
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Emsley JW, Lelli M, Luckhurst GR, Zimmermann H. ^{13}C NMR study of the director distribution adopted by the modulated nematic phases formed by liquid-crystal dimers with odd numbers of atoms in their spacers. Phys Rev E 2017; 96:062702. [PMID: 29347294 DOI: 10.1103/physreve.96.062702] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Indexed: 11/07/2022]
Abstract
The orientational order of the molecules in the bent mesogen CB6OCB has been studied throughout the range of temperature stability of both the N_{U} and N_{TB} liquid-crystal phases by ^{13}C NMR spectroscopy. These spectra provide local order parameters for the para axes of both of the nonequivalent cyanobiphenyl groups and show how they change on entering the twist-bend nematic phase. A key feature of the order parameters is a weak, but clear maximum in the temperature variation of the order parameter prior to the N_{TB} phase. This suggests that the directors in both the N_{U} and N_{TB} phases are tilted with respect to the magnetic field of the spectrometer. Significantly the conformational states of the spacer are comparable in both phases, although the low temperature nematic is chiral but not that at high temperature. It is proposed that the higher temperature, tilted phase could be the splay-bend nematic phase.
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Affiliation(s)
- J W Emsley
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom
| | - M Lelli
- Department of Chemistry, Center for Magnetic Resonance, University of Florence, Sesto Fiorentino (FI) 50019, Italy
| | - G R Luckhurst
- Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom
| | - H Zimmermann
- Max-Planck-Institut für Medizinische Forschung, Department of Biomolecular Mechanisms, D-69120 Heidelberg, Germany
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41
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Gepp MM, Duckstein R, Kayatz F, Rodler N, Scheuerer Z, Neubauer JC, Lachmann K, Stramm C, Liebmann A, Thomas M, Zimmermann H. Labbag® - a versatile bag-based cultivation system for expansion, differentiation and cryopreservation of human stem cells. Current Directions in Biomedical Engineering 2017. [DOI: 10.1515/cdbme-2017-0077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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
AbstractNovel approaches in regenerative medicine and tissue engineering are highly promoted by human induced pluripotent stem cells. Typical workflows include the expansion, differentiation and/or cryopreservation of these cells. Often, the differentiation, cytotoxicity tests or disease modelling rely on multicellular aggregates. Here, we present the novel bag-based system “Labbag®” to address workflows required for these applications. As a unique feature, the Labbag® provides a chemical spot pattern to allow the formation of several hundreds of hanging droplets within a few seconds with standard laboratory equipment. In this study, we describe the general concept of the Labbag® and show aggregate formation of stem cells as first stem cell workflow successfully transferred.
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Affiliation(s)
- Michael M. Gepp
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany
| | - Rowena Duckstein
- Fraunhofer Institute for Surface Engineering and Thin Films IST, 38108 Braunschweig, Germany
| | - Fabian Kayatz
- Fraunhofer Institute for Process Engineering and Packaging IVV, Branch Lab for Processing Machinery and Packaging Technology, 01189 Dresden, Germany
| | - Norbert Rodler
- Fraunhofer Institute for Process Engineering and Packaging IVV, 85354 Freising, Germany
| | - Zuzana Scheuerer
- Fraunhofer Institute for Process Engineering and Packaging IVV, 85354 Freising, Germany
| | - Julia C. Neubauer
- Fraunhofer Institute for Biomedical Engineering IBMT, 66280 Sulzbach, Germany
| | - Kristina Lachmann
- Fraunhofer Institute for Surface Engineering and Thin Films IST, 38108 Braunschweig, Germany
| | - Cornelia Stramm
- Fraunhofer Institute for Process Engineering and Packaging IVV, 85354 Freising, Germany
| | - Andrea Liebmann
- Fraunhofer Institute for Process Engineering and Packaging IVV, Branch Lab for Processing Machinery and Packaging Technology, 01189 Dresden, Germany
| | - Michael Thomas
- Fraunhofer Institute for Surface Engineering and Thin Films IST, 38108 Braunschweig, Germany
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering IBMT, Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
- Molecular and Cellular Biotechnology/Nanotechnology, Saarland University, 66123 Saarbrücken, Germany
- Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile
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42
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Erb-Zohar K, Kropeit D, Scheuenpflug J, Stobernack HP, Hulskotte E, van Schanke A, Zimmermann H, Rübsamen-Schaeff H. Intravenous Hydroxypropyl β-Cyclodextrin Formulation of Letermovir: A Phase I, Randomized, Single-Ascending, and Multiple-Dose Trial. Clin Transl Sci 2017; 10:487-495. [PMID: 28675594 PMCID: PMC6402190 DOI: 10.1111/cts.12483] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 05/21/2017] [Indexed: 11/29/2022] Open
Abstract
Letermovir is a novel antiviral in clinical development for prophylaxis against human cytomegalovirus in immunocompromised transplant recipients. This two‐part, single‐center, randomized, double‐blind, placebo‐controlled trial evaluated the safety and pharmacokinetics of a hydroxypropyl β‐cyclodextrin (HPβCD)‐based intravenous formulation of letermovir in healthy women. Subjects received single, escalating doses (120, 240, 480, 720, and 960 mg; 6 letermovir, 2 placebo per cohort) or multiple, once‐daily doses (240 mg; 8 letermovir, 4 placebo) of HPβCD‐formulated letermovir and the associated pharmacokinetic profiles and adverse events were investigated. Single‐dose and multiple‐dose regimens were generally well tolerated. Single‐dose escalation resulted in a slightly more‐than‐dose‐proportional increase in the area under the letermovir plasma concentration–time curve (AUC), whereas increase in the maximal observed letermovir plasma concentration (Cmax) was dose proportional. After once‐daily dosing, accumulation ratios in AUC and Cmax were 1.22 and 1.03, respectively. The terminal half‐life was 28.3 h, supporting once‐daily dosing (EudraCT Number: 2012‐001603‐20).
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Affiliation(s)
| | - D Kropeit
- AiCuris Anti-infective Cures GmbH, Wuppertal, Germany
| | | | | | | | | | - H Zimmermann
- AiCuris Anti-infective Cures GmbH, Wuppertal, Germany
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43
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Stacey GN, Connon CJ, Coopman K, Dickson AJ, Fuller B, Hunt CJ, Kemp P, Kerby J, Man J, Matejtschuk P, Moore H, Morris J, Oreffo ROC, Slater N, Ward S, Wiggins C, Zimmermann H. Preservation and stability of cell therapy products: recommendations from an expert workshop. Regen Med 2017; 12:553-564. [DOI: 10.2217/rme-2017-0073] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
If the field of regenerative medicine is to deliver therapies, rapid expansion and delivery over considerable distances to large numbers of patients is needed. This will demand efficient stabilization and shipment of cell products. However, cryopreservation science is poorly understood by life-scientists in general and in recent decades only limited progress has been made in the technology of preservation and storage of cells. Rapid translation of new developments to a broader range of cell types will be vital, as will assuring a deeper knowledge of the fundamental cell biology relating to successful preservation and recovery of cell cultures. This report presents expert consensus on these and other issues which need to be addressed for more efficient delivery of cell therapies.
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Affiliation(s)
- Glyn N Stacey
- UK Stem Cell Bank, Division of Advanced Therapies, NIBSC, South Mimms, Hertfordshire, UK
| | - Che J Connon
- Institute of Genetic Medicine, University of Newcastle, Newcastle upon Tyne, UK
| | - Karen Coopman
- Chemical Engineering, Loughborough University, Loughborough, UK
| | - Alan J Dickson
- Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
| | - Barry Fuller
- Department of Surgery, University College London, London, UK
| | - Charles J Hunt
- UK Stem Cell Bank, Division of Advanced Therapies, NIBSC, South Mimms, Hertfordshire, UK
| | - Paul Kemp
- Intercytex Ltd & HairClone, Manchester, UK
| | - Julie Kerby
- Cell Therapy Manufacturing Development, Pfizer, Cambridge, UK
| | - Jennifer Man
- UK Stem Cell Bank, Division of Advanced Therapies, NIBSC, South Mimms, Hertfordshire, UK
| | - Paul Matejtschuk
- Standardisation Science, National Institute for Biological Standards and Control (NIBSC) a centre of the MHRA, South Mimms, Hertfordshire, UK
| | - Harry Moore
- Department of Biomedical Sciences, University of Sheffield, Sheffield, UK
| | | | - Richard OC Oreffo
- Centre for Human Development, Stem Cells & Regeneration, University of Southampton, Southampton, UK
| | - Nigel Slater
- The Bioscience Engineering Group, University of Cambridge, Cambridge, UK
| | | | - Claire Wiggins
- National Health Service – Blood & Transplant, Watford, UK
| | - Heiko Zimmermann
- Fraunhofer-Institute for Biomedical Engineering, Sulzbach, Germany
- Department of Molecular & Cellular Biotechnology/Nanotechnology, Saarland University, Saarbrücken, Germany
- Department of Marine Sciences, Universidad Católica del Norte, Antafogasta/Coquimbo, Chile
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Almenas KK, Marchello JM, Kadambi NP, Tilbrook RW, Cheng HS, Lu MS, Diamond DJ, Bohachevsky IO, Hafer JF, Shih TA, Temme MI, Madic C, Koehly G, Bromley WD, Olszewski JS, Bandyopadhyay G, Bauer AA, Lowry LM, Rankin WN, Kelle JA, Cohen BL, Sow HN, Conn RW, Okula K, Johnson AW, Bian S, Zimmermann H. Authors. NUCL TECHNOL 2017. [DOI: 10.13182/nt78-a32111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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Zimmermann H. Swelling in Mixed-Oxide Fuel Pins. NUCL TECHNOL 2017. [DOI: 10.13182/nt78-a32125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Zimmermann
- kernforschungszentrum Karlsruhe Institut für Material- und festkörperforschung, Postfach 3640 75 Karlsruhe, Federal Republic of Germany
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Affiliation(s)
- H. Zimmermann
- Kernforschungszentrum Karlsruhe Institut für Material- und Festkörperforschung Postfach 3640, 75 Karlsruhe, Germany
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47
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Verheyen E, Abila R, Akoll P, Albertson C, Antunes D, Banda T, Bills R, Bulirani A, Manda AC, Cohen AS, Cunha-Saraiva F, Derycke S, Donohue I, Du M, Dudu AM, Egger B, Fritzsche K, Frommen JG, Gante HF, Genner MJ, Härer A, Hata H, Irvine K, Mwapu PI, de Bisthoven LJ, Jungwirth A, Kaleme P, Katongo C, Kéver L, Koblmüller S, Konings A, Lamboj A, Lemmel-Schaedelin F, Schiaffino GM, Martens K, Mulungula PM, Meyer A, More HL, Musilova Z, Bukinga FM, Muzumani R, Ntakimazi G, Okello W, Phiri H, Pialek L, Plisnier PD, Raeymaekers JAM, Rajkov J, Rican O, Roberts R, Salzburger W, Schoen I, Sefc KM, Singh P, Skelton P, Snoeks J, Schneider K, Sturmbauer C, Svardal H, Svensson O, Dowdall JT, Turner GF, Tyers A, van Rijssel JC, Van Steenberge M, Vanhove MPM, Weber AT, Weyl O, Ziegelbecker A, Zimmermann H. Oil extraction imperils Africa's Great Lakes. Science 2017; 354:561-562. [PMID: 27811261 DOI: 10.1126/science.aal1722] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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48
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Birkmann A, Zimmermann H. Drugs in development for herpes simplex and varicella zoster virus. Clin Pharmacol Ther 2017; 102:30-32. [PMID: 28160282 DOI: 10.1002/cpt.647] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 01/24/2017] [Accepted: 01/29/2017] [Indexed: 11/10/2022]
Abstract
The alpha-herpesviruses varicella zoster virus (VZV) and herpes simplex virus (HSV) share common features including lifelong persistence in sensory ganglia and the risk of recurrences. For both HSV and VZV, standard-of-care (SoC) is based on nucleoside analogs (NAs), which require specific activation in infected cells. These existing drugs exhibit substantial limitations, warranting the development of new and more effective drugs.
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Affiliation(s)
- A Birkmann
- AiCuris Anti-infective Cures GmbH, Wuppertal, Germany
| | - H Zimmermann
- AiCuris Anti-infective Cures GmbH, Wuppertal, Germany
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49
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De Sousa PA, Steeg R, Wachter E, Bruce K, King J, Hoeve M, Khadun S, McConnachie G, Holder J, Kurtz A, Seltmann S, Dewender J, Reimann S, Stacey G, O'Shea O, Chapman C, Healy L, Zimmermann H, Bolton B, Rawat T, Atkin I, Veiga A, Kuebler B, Serano BM, Saric T, Hescheler J, Brüstle O, Peitz M, Thiele C, Geijsen N, Holst B, Clausen C, Lako M, Armstrong L, Gupta SK, Kvist AJ, Hicks R, Jonebring A, Brolén G, Ebneth A, Cabrera-Socorro A, Foerch P, Geraerts M, Stummann TC, Harmon S, George C, Streeter I, Clarke L, Parkinson H, Harrison PW, Faulconbridge A, Cherubin L, Burdett T, Trigueros C, Patel MJ, Lucas C, Hardy B, Predan R, Dokler J, Brajnik M, Keminer O, Pless O, Gribbon P, Claussen C, Ringwald A, Kreisel B, Courtney A, Allsopp TE. Rapid establishment of the European Bank for induced Pluripotent Stem Cells (EBiSC) - the Hot Start experience. Stem Cell Res 2017; 20:105-114. [PMID: 28334554 DOI: 10.1016/j.scr.2017.03.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 02/17/2017] [Accepted: 03/03/2017] [Indexed: 10/20/2022] Open
Abstract
A fast track "Hot Start" process was implemented to launch the European Bank for Induced Pluripotent Stem Cells (EBiSC) to provide early release of a range of established control and disease linked human induced pluripotent stem cell (hiPSC) lines. Established practice amongst consortium members was surveyed to arrive at harmonised and publically accessible Standard Operations Procedures (SOPs) for tissue procurement, bio-sample tracking, iPSC expansion, cryopreservation, qualification and distribution to the research community. These were implemented to create a quality managed foundational collection of lines and associated data made available for distribution. Here we report on the successful outcome of this experience and work flow for banking and facilitating access to an otherwise disparate European resource, with lessons to benefit the international research community. ETOC: The report focuses on the EBiSC experience of rapidly establishing an operational capacity to procure, bank and distribute a foundational collection of established hiPSC lines. It validates the feasibility and defines the challenges of harnessing and integrating the capability and productivity of centres across Europe using commonly available resources currently in the field.
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Affiliation(s)
- Paul A De Sousa
- Centre for Clinical Brain Sciences, Chancellors Building, 49 Little France Crescent, University of Edinburgh, Edinburgh EH16 4SB, UK; Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK.
| | - Rachel Steeg
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Elisabeth Wachter
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Kevin Bruce
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Jason King
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Marieke Hoeve
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Shalinee Khadun
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - George McConnachie
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Julie Holder
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Andreas Kurtz
- Charité - Universitätsmedizin Berlin, Berlin-Brandenburg Center for Regenerative Therapies, Augustenburger Platz, Berlin 13353, Germany
| | - Stefanie Seltmann
- Charité - Universitätsmedizin Berlin, Berlin-Brandenburg Center for Regenerative Therapies, Augustenburger Platz, Berlin 13353, Germany
| | - Johannes Dewender
- Charité - Universitätsmedizin Berlin, Berlin-Brandenburg Center for Regenerative Therapies, Augustenburger Platz, Berlin 13353, Germany
| | - Sascha Reimann
- Charité - Universitätsmedizin Berlin, Berlin-Brandenburg Center for Regenerative Therapies, Augustenburger Platz, Berlin 13353, Germany
| | - Glyn Stacey
- UK Stem Cell Bank, Division of Advanced Therapies, National Institute for Biological Standards and Control, Medicines and Healthcare Products Regulatory Authority, Blanche Lane, South Mimms, Hertfordshire, ENG 3GQ, UK
| | - Orla O'Shea
- UK Stem Cell Bank, Division of Advanced Therapies, National Institute for Biological Standards and Control, Medicines and Healthcare Products Regulatory Authority, Blanche Lane, South Mimms, Hertfordshire, ENG 3GQ, UK
| | - Charlotte Chapman
- UK Stem Cell Bank, Division of Advanced Therapies, National Institute for Biological Standards and Control, Medicines and Healthcare Products Regulatory Authority, Blanche Lane, South Mimms, Hertfordshire, ENG 3GQ, UK
| | - Lyn Healy
- UK Stem Cell Bank, Division of Advanced Therapies, National Institute for Biological Standards and Control, Medicines and Healthcare Products Regulatory Authority, Blanche Lane, South Mimms, Hertfordshire, ENG 3GQ, UK
| | - Heiko Zimmermann
- Fraunhofer Institute for Biomedical Engineering (IBMT), Josef-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany; Molecular & Cellular Biotechnology/Nanotechnology, Saarland University, Campus, 66123 Saarbrücken, Germany
| | - Bryan Bolton
- European Collection of Authenticated Cell Cultures, Public Health England, Porton Down, Salisbury SP4 0JG, UK
| | - Trisha Rawat
- European Collection of Authenticated Cell Cultures, Public Health England, Porton Down, Salisbury SP4 0JG, UK
| | - Isobel Atkin
- European Collection of Authenticated Cell Cultures, Public Health England, Porton Down, Salisbury SP4 0JG, UK
| | - Anna Veiga
- Barcelona Stem Cell Bank, Centre for Regenerative Medicine in Barcelona, C/Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Bernd Kuebler
- Barcelona Stem Cell Bank, Centre for Regenerative Medicine in Barcelona, C/Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Blanca Miranda Serano
- Andalusian Public Health Care System, Avda Conocimiento sn, 18100 Armilla, Granada, Spain
| | - Tomo Saric
- Centre for Physiology and Pathophysiology, Institute for Neurophysiology, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Jürgen Hescheler
- Centre for Physiology and Pathophysiology, Institute for Neurophysiology, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Oliver Brüstle
- Institute of Reconstructive Neurobiology, LIFE & BRAIN Centre, University of Bonn, Sigmund-Freud-Strasse 25, 53105 Bonn, Germany
| | - Michael Peitz
- Institute of Reconstructive Neurobiology, LIFE & BRAIN Centre, University of Bonn, Sigmund-Freud-Strasse 25, 53105 Bonn, Germany
| | - Cornelia Thiele
- Institute of Reconstructive Neurobiology, LIFE & BRAIN Centre, University of Bonn, Sigmund-Freud-Strasse 25, 53105 Bonn, Germany
| | - Niels Geijsen
- Hubrecht Institute for developmental biology and stem cell research, Royal Netherlands Academy of Arts and Sciences (KNAW), Utrecht University, Department of Clinical Sciences of Companion Animals and UMC Utrecht, 3584CT Utrecht, The Netherlands
| | - Bjørn Holst
- Bioneer A/S, Kogle Alle 2, DK-2970 Hørsholm, Denmark
| | | | - Majlinda Lako
- Institute for Genetic Medicine, University of Newcastle, Newcastle NE1 3BZ, United Kingdom
| | - Lyle Armstrong
- Institute for Genetic Medicine, University of Newcastle, Newcastle NE1 3BZ, United Kingdom
| | - Shailesh K Gupta
- AstraZeneca, R&D, Innovative Medicines, Discovery Sciences, Reagents and Assay Development, HC3006, Pepparedsleden 1, SE-431 83 Mölndal, Sweden
| | - Alexander J Kvist
- AstraZeneca, R&D, Innovative Medicines, Discovery Sciences, Reagents and Assay Development, HC3006, Pepparedsleden 1, SE-431 83 Mölndal, Sweden
| | - Ryan Hicks
- AstraZeneca, R&D, Innovative Medicines, Discovery Sciences, Reagents and Assay Development, HC3006, Pepparedsleden 1, SE-431 83 Mölndal, Sweden
| | - Anna Jonebring
- AstraZeneca, R&D, Innovative Medicines, Discovery Sciences, Reagents and Assay Development, HC3006, Pepparedsleden 1, SE-431 83 Mölndal, Sweden
| | - Gabriella Brolén
- AstraZeneca, R&D, Innovative Medicines, Discovery Sciences, Reagents and Assay Development, HC3006, Pepparedsleden 1, SE-431 83 Mölndal, Sweden
| | - Andreas Ebneth
- Janssen Research & Development (A Division of Janssen Pharmaceutica N.V), Neuroscience Therapeutic Area, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Alfredo Cabrera-Socorro
- Janssen Research & Development (A Division of Janssen Pharmaceutica N.V), Neuroscience Therapeutic Area, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Patrik Foerch
- UCB Biopharma (since May 2014), Discovery Research, Chemin du Foriest, Braine l'Alleud B-1420, Belgium
| | - Martine Geraerts
- UCB Biopharma (since May 2014), Discovery Research, Chemin du Foriest, Braine l'Alleud B-1420, Belgium
| | | | - Shawn Harmon
- University of Edinburgh School of Law, Old College, South Bridge, Edinburgh EH8 9YL, UK
| | - Carol George
- University of Edinburgh School of Law, Old College, South Bridge, Edinburgh EH8 9YL, UK
| | - Ian Streeter
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Laura Clarke
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Helen Parkinson
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Peter W Harrison
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Adam Faulconbridge
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Luca Cherubin
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Tony Burdett
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Cesar Trigueros
- Inbiomed, P° Mikeletegi, 81, 20009 San Sebastián, Gipuzkoa, Spain
| | - Minal J Patel
- Cellular Generation and Phenotyping (CGaP) facility, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinston CB10 1SA, UK
| | - Christa Lucas
- Cellular Generation and Phenotyping (CGaP) facility, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinston CB10 1SA, UK
| | - Barry Hardy
- Douglas Connect, Technology Park Basel, Hochbergerstrasse 60C, 4057 Basel, Switzerland
| | - Rok Predan
- Douglas Connect, Technology Park Basel, Hochbergerstrasse 60C, 4057 Basel, Switzerland
| | - Joh Dokler
- Douglas Connect, Technology Park Basel, Hochbergerstrasse 60C, 4057 Basel, Switzerland
| | - Maja Brajnik
- Douglas Connect, Technology Park Basel, Hochbergerstrasse 60C, 4057 Basel, Switzerland
| | - Oliver Keminer
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, D-22525 Hamburg, Germany
| | - Ole Pless
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, D-22525 Hamburg, Germany
| | - Philip Gribbon
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, D-22525 Hamburg, Germany
| | - Carsten Claussen
- Fraunhofer IME ScreeningPort, Schnackenburgallee 114, D-22525 Hamburg, Germany
| | | | - Beate Kreisel
- ARTTIC, 58A rue du Dessous des Berges, F-75013 Paris, France
| | - Aidan Courtney
- Roslin Cells Ltd(1), Head office, Nine Edinburgh Bioquarter, 9 Little France Rd, Edinburgh EH16 4UX, UK; EBiSC banking facility, Babraham Research Campus, B260 Meditrina, Cambridge CB22 3AT, UK
| | - Timothy E Allsopp
- Pfizer Ltd (Neusentis), The Portway Building, Granta Park, Great Abington, Cambridge, CB21 6GS, UK
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Boutin S, Hagenfeld D, Zimmermann H, El Sayed N, Höpker T, Greiser HK, Becher H, Kim TS, Dalpke AH. Clustering of Subgingival Microbiota Reveals Microbial Disease Ecotypes Associated with Clinical Stages of Periodontitis in a Cross-Sectional Study. Front Microbiol 2017; 8:340. [PMID: 28298910 PMCID: PMC5331054 DOI: 10.3389/fmicb.2017.00340] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 02/17/2017] [Indexed: 01/06/2023] Open
Abstract
Periodontitis is characterized by chronic inflammation associated with alteration of the oral microbiota. In contrast to previous microbiome studies focusing a priori on comparison between extreme phenotypes, our study analyzed a random sample of 85 people. The aim of this study was to link microbial differences to disease’s prevalence and severity. Using next generation sequencing of 16S rRNA amplicons and cluster analysis, we observed that the population can be divided into two major ecotypes: One mainly contained periodontal healthy/mild periodontitis individuals whereas the second ecotype showed a heterogeneous microbial distribution and clustered into three distinct sub-ecotypes. Those sub-ecotypes differed with respect to the frequency of diseased patients and displayed a gradual change in distinct subgingival microbiota that goes along with clinical disease symptoms. In ecotype 2, the subgroup with no clinical signs of disease was linked to an increase of F. nucleatum vincentii but also several other species, while only in “end-stage” dysbiosis classical red complex bacteria gained overweight. Therefore, the microbial disease ecotypes observed in our population can lead to an establishment of an early microbial risk profile for clinically healthy patients.
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Affiliation(s)
- Sébastien Boutin
- Department of Infectious Diseases, Medical Microbiology and Hygiene, University Hospital HeidelbergHeidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL)Heidelberg, Germany
| | - Daniel Hagenfeld
- Department of Periodontology and Restorative Dentistry, University Hospital MünsterMünster, Germany; Section of Periodontology, Department of Conservative Dentistry, University Hospital HeidelbergHeidelberg, Germany
| | - Heiko Zimmermann
- Institute of Public Health, Epidemiology and Biostatistics, Heidelberg University Heidelberg, Germany
| | - Nihad El Sayed
- Section of Periodontology, Department of Conservative Dentistry, University Hospital Heidelberg Heidelberg, Germany
| | - Tanja Höpker
- Division of Cancer Epidemiology, German Cancer Research Center Heidelberg, Germany
| | - Halina K Greiser
- Division of Cancer Epidemiology, German Cancer Research Center Heidelberg, Germany
| | - Heiko Becher
- Institute of Public Health, Epidemiology and Biostatistics, Heidelberg UniversityHeidelberg, Germany; Institute of Medical Biostatistics and Epidemiology, University Hospital Hamburg-EppendorfHamburg, Germany
| | - Ti-Sun Kim
- Section of Periodontology, Department of Conservative Dentistry, University Hospital Heidelberg Heidelberg, Germany
| | - Alexander H Dalpke
- Department of Infectious Diseases, Medical Microbiology and Hygiene, University Hospital HeidelbergHeidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL)Heidelberg, Germany
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