1
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Linke P, Munding N, Kimmle E, Kaufmann S, Hayashi K, Nakahata M, Takashima Y, Sano M, Bastmeyer M, Holstein T, Dietrich S, Müller-Tidow C, Harada A, Ho AD, Tanaka M. Reversible Host-Guest Crosslinks in Supramolecular Hydrogels for On-Demand Mechanical Stimulation of Human Mesenchymal Stem Cells. Adv Healthc Mater 2024; 13:e2302607. [PMID: 38118064 DOI: 10.1002/adhm.202302607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 12/12/2023] [Indexed: 12/22/2023]
Abstract
Stem cells are regulated not only by biochemical signals but also by biophysical properties of extracellular matrix (ECM). The ECM is constantly monitored and remodeled because the fate of stem cells can be misdirected when the mechanical interaction between cells and ECM is imbalanced. A well-defined ECM model for bone marrow-derived human mesenchymal stem cells (hMSCs) based on supramolecular hydrogels containing reversible host-guest crosslinks is fabricated. The stiffness (Young's modulus E) of the hydrogels can be switched reversibly by altering the concentration of non-cytotoxic, free guest molecules dissolved in the culture medium. Fine-adjustment of substrate stiffness enables the authors to determine the critical stiffness level E* at which hMSCs turn the mechano-sensory machinery on or off. Next, the substrate stiffness across E* is switched and the dynamic adaptation characteristics such as morphology, traction force, and YAP/TAZ signaling of hMSCs are monitored. These data demonstrate the instantaneous switching of traction force, which is followed by YAP/TAZ signaling and morphological adaptation. Periodical switching of the substrate stiffness across E* proves that frequent applications of mechanical stimuli drastically suppress hMSC proliferation. Mechanical stimulation across E* level using dynamic hydrogels is a promising strategy for the on-demand control of hMSC transcription and proliferation.
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Affiliation(s)
- Philipp Linke
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Natalie Munding
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Esther Kimmle
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Stefan Kaufmann
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Kentaro Hayashi
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
| | - Masaki Nakahata
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Osaka, 560-0043, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Osaka, 560-0043, Japan
| | - Masaki Sano
- Institute of Natural Sciences, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Martin Bastmeyer
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
- Cell and Neurobiology, Zoological Institute, Karlsruhe Institute of Technology, 76131, Karlsruhe, Germany
- Institute for Biological and Chemical Systems - Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology, 76334, Eggenstein-Leopoldshafen, Germany
| | - Thomas Holstein
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
- Molecular Genetics and Evolution, Centre for Organismal Studies, Heidelberg University, 69221, Heidelberg, Germany
| | - Sascha Dietrich
- Department of Internal Medicine V, Hematology, Oncology, Rheumatology, University Hospital Heidelberg, 69120, Heidelberg, Germany
- Department of Haematology, Oncology, and Clinical Immunology, Universitätsklinikum Düsseldorf, 40225, Düsseldorf, Germany
| | - Carsten Müller-Tidow
- Department of Internal Medicine V, Hematology, Oncology, Rheumatology, University Hospital Heidelberg, 69120, Heidelberg, Germany
| | - Akira Harada
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Anthony D Ho
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
- Department of Internal Medicine V, Hematology, Oncology, Rheumatology, University Hospital Heidelberg, 69120, Heidelberg, Germany
- Molecular Medicine Partnership Unit Heidelberg, EMBL and Heidelberg University, 69120, Heidelberg, Germany
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
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2
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Tanaka M, Thoma J, Poisa-Beiro L, Wuchter P, Eckstein V, Dietrich S, Pabst C, Müller-Tidow C, Ohta T, Ho AD. Physical biomarkers for human hematopoietic stem and progenitor cells. Cells Dev 2023; 174:203845. [PMID: 37116713 DOI: 10.1016/j.cdev.2023.203845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 04/30/2023]
Abstract
Adhesion of hematopoietic stem and progenitor cells (HSPCs) to the bone marrow niche plays critical roles in the maintenance of the most primitive HSPCs. The interactions of HSPC-niche interactions are clinically relevant in acute myeloid leukemia (AML), because (i) leukemia-initiating cells adhered to the marrow niche are protected from the cytotoxic effect by chemotherapy and (ii) mobilization of HSPCs from healthy donors' bone marrow is crucial for the effective stem cell transplantation. However, although many clinical agents have been developed for the HSPC mobilization, the effects caused by the extrinsic molecular cues were traditionally evaluated based on phenomenological observations. This review highlights the recent interdisciplinary challenges of hematologists, biophysicists and cell biologists towards the design of defined in vitro niche models and the development of physical biomarkers for quantitative indexing of differential effects of clinical agents on human HSPCs.
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Affiliation(s)
- Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, INF253, Heidelberg University, 69120 Heidelberg, Germany; Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, 606-8501 Kyoto, Japan.
| | - Judith Thoma
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, INF253, Heidelberg University, 69120 Heidelberg, Germany
| | - Laura Poisa-Beiro
- Department of Medicine V, Heidelberg University, INF410, 69120 Heidelberg, Germany
| | - Patrick Wuchter
- Department of Medicine V, Heidelberg University, INF410, 69120 Heidelberg, Germany
| | - Volker Eckstein
- Department of Medicine V, Heidelberg University, INF410, 69120 Heidelberg, Germany
| | - Sascha Dietrich
- Department of Medicine V, Heidelberg University, INF410, 69120 Heidelberg, Germany
| | - Caroline Pabst
- Department of Medicine V, Heidelberg University, INF410, 69120 Heidelberg, Germany
| | - Carsten Müller-Tidow
- Department of Medicine V, Heidelberg University, INF410, 69120 Heidelberg, Germany
| | - Takao Ohta
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, 606-8501 Kyoto, Japan
| | - Anthony D Ho
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, 606-8501 Kyoto, Japan; Department of Medicine V, Heidelberg University, INF410, 69120 Heidelberg, Germany; Molecular Medicine Partnership Unit Heidelberg, European Molecular Biology Laboratory (EMBL), Heidelberg University, 69120 Heidelberg, Germany.
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3
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He L, Arnold C, Thoma J, Rohde C, Kholmatov M, Garg S, Hsiao CC, Viol L, Zhang K, Sun R, Schmidt C, Janssen M, MacRae T, Huber K, Thiede C, Hébert J, Sauvageau G, Spratte J, Fluhr H, Aust G, Müller-Tidow C, Niehrs C, Pereira G, Hamann J, Tanaka M, Zaugg JB, Pabst C. CDK7/12/13 inhibition targets an oscillating leukemia stem cell network and synergizes with venetoclax in acute myeloid leukemia. EMBO Mol Med 2022; 14:e14990. [PMID: 35253392 PMCID: PMC8988201 DOI: 10.15252/emmm.202114990] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 02/06/2022] [Accepted: 02/07/2022] [Indexed: 01/04/2023] Open
Abstract
The heterogeneous response of acute myeloid leukemia (AML) to current anti‐leukemic therapies is only partially explained by mutational heterogeneity. We previously identified GPR56 as a surface marker associated with poor outcome across genetic groups, which characterizes two leukemia stem cell (LSC)‐enriched compartments with different self‐renewal capacities. How these compartments self‐renew remained unclear. Here, we show that GPR56+ LSC compartments are promoted in a complex network involving epithelial‐to‐mesenchymal transition (EMT) regulators besides Rho, Wnt, and Hedgehog (Hh) signaling. Unexpectedly, Wnt pathway inhibition increased the more immature, slowly cycling GPR56+CD34+ fraction and Hh/EMT gene expression, while Wnt activation caused opposite effects. Our data suggest that the crucial role of GPR56 lies in its ability to co‐activate these opposing signals, thus ensuring the constant supply of both LSC subsets. We show that CDK7 inhibitors suppress both LSC‐enriched subsets in vivo and synergize with the Bcl‐2 inhibitor venetoclax. Our data establish reciprocal transition between LSC compartments as a novel concept underlying the poor outcome in GPR56high AML and propose combined CDK7 and Bcl‐2 inhibition as LSC‐directed therapy in this disease.
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Affiliation(s)
- Lixiazi He
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Christian Arnold
- Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Judith Thoma
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, Heidelberg, Germany
| | - Christian Rohde
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Maksim Kholmatov
- Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Swati Garg
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,Department of Medical Oncology, Dana Farber Cancer Institute, Boston, MA, USA
| | - Cheng-Chih Hsiao
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute, Amsterdam University Medical Centers, Amsterdam, Netherlands
| | - Linda Viol
- Centre for Organismal Studies (COS)/Centre for Cell and Molecular Biology (ZMBH), University of Heidelberg, Heidelberg, Germany.,German Cancer Research Centre (DKFZ), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Kaiqing Zhang
- Division of Molecular Embryology, DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Rui Sun
- Division of Molecular Embryology, DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Christina Schmidt
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Maike Janssen
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Tara MacRae
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec, Canada
| | - Karin Huber
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany
| | - Christian Thiede
- Department of Internal Medicine I, University Hospital of Dresden Carl Gustav Carus, Dresden, Germany
| | - Josée Hébert
- The Quebec Leukemia Cell Bank and Division of Hematology-Oncology, Maisonneuve-Rosemont Hospital, Montréal, Canada.,Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, Canada.,Division of Hematology-Oncology, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
| | - Guy Sauvageau
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec, Canada.,Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, Canada.,Division of Hematology-Oncology, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
| | - Julia Spratte
- Department of Gynecology and Obstetrics, University Hospital Heidelberg, Heidelberg, Germany
| | - Herbert Fluhr
- Department of Gynecology and Obstetrics, University Hospital Heidelberg, Heidelberg, Germany
| | - Gabriela Aust
- Department of Surgery, Research Laboratories, Leipzig University, Leipzig, Germany
| | - Carsten Müller-Tidow
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Christof Niehrs
- Division of Molecular Embryology, DKFZ-ZMBH Alliance, Heidelberg, Germany.,Institute of Molecular Biology (IMB), Mainz, Germany
| | - Gislene Pereira
- Centre for Organismal Studies (COS)/Centre for Cell and Molecular Biology (ZMBH), University of Heidelberg, Heidelberg, Germany.,German Cancer Research Centre (DKFZ), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Jörg Hamann
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute, Amsterdam University Medical Centers, Amsterdam, Netherlands
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, Heidelberg, Germany.,Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Judith B Zaugg
- Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Caroline Pabst
- Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
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4
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Tanaka M, Lanzer M. Receptor-Functionalized Lipid Membranes as Biomimetic Surfaces for Adhesion of Plasmodium falciparum-Infected Erythrocytes. Methods Mol Biol 2022; 2470:601-613. [PMID: 35881377 DOI: 10.1007/978-1-0716-2189-9_45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Here, we describe a detailed protocol of how to manufacture biomimetic, host receptor-functionalized membranes and how to use them in adhesion assays. Receptor-functionalized membranes have the advantage that the receptor identity and the receptor density can be controlled, which, in turn, enables studies on the kinetics, dynamics and biomechanics of receptor/ligand interactions. Such information is difficult to obtain from currently used in vitro systems, including cultured primary human microvascular endothelial cells or receptor-coated surfaces, which often display either multiple receptors or receptors with uncertain density and arrangement.
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Affiliation(s)
- Motomu Tanaka
- Physical Chemistry of Biosystems, Heidelberg University, Heidelberg, Germany
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Michael Lanzer
- Department of Infectious Diseases, Parasitology, Universitätsklinikum Heidelberg, Heidelberg, Germany.
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5
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Fröhlich B, Dasanna AK, Lansche C, Czajor J, Sanchez CP, Cyrklaff M, Yamamoto A, Craig A, Schwarz US, Lanzer M, Tanaka M. Functionalized supported membranes for quantifying adhesion of P. falciparum-infected erythrocytes. Biophys J 2021; 120:3315-3328. [PMID: 34246628 PMCID: PMC8391081 DOI: 10.1016/j.bpj.2021.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 06/21/2021] [Accepted: 07/02/2021] [Indexed: 12/22/2022] Open
Abstract
The pathology of Plasmodium falciparum malaria is largely defined by the cytoadhesion of infected erythrocytes to the microvascular endothelial lining. The complexity of the endothelial surface and the large range of interactions available for the infected erythrocyte via parasite-encoded adhesins make analysis of critical contributions during cytoadherence challenging to define. Here, we have explored supported membranes functionalized with two important adhesion receptors, ICAM1 or CD36, as a quantitative biomimetic surface to help understand the processes involved in cytoadherence. Parasitized erythrocytes bound to the receptor-functionalized membranes with high efficiency and selectivity under both static and flow conditions, with infected wild-type erythrocytes displaying a higher binding capacity than do parasitized heterozygous sickle cells. We further show that the binding efficiency decreased with increasing intermolecular receptor distance and that the cell-surface contacts were highly dynamic and increased with rising wall shear stress as the cell underwent a shape transition. Computer simulations using a deformable cell model explained the wall-shear-stress-induced dynamic changes in cell shape and contact area via the specific physical properties of erythrocytes, the density of adhesins presenting knobs, and the lateral movement of receptors in the supported membrane.
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Affiliation(s)
- Benjamin Fröhlich
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg, Germany
| | - Anil K Dasanna
- Institute for Theoretical Physics and BioQuant-Center for Quantitative Biology, Heidelberg University, Heidelberg, Germany
| | - Christine Lansche
- Department of Infectious Diseases, Parasitology, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Julian Czajor
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg, Germany
| | - Cecilia P Sanchez
- Department of Infectious Diseases, Parasitology, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Marek Cyrklaff
- Department of Infectious Diseases, Parasitology, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Akihisa Yamamoto
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Alister Craig
- Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Ulrich S Schwarz
- Institute for Theoretical Physics and BioQuant-Center for Quantitative Biology, Heidelberg University, Heidelberg, Germany.
| | - Michael Lanzer
- Department of Infectious Diseases, Parasitology, Universitätsklinikum Heidelberg, Heidelberg, Germany.
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg, Germany; Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, Japan.
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6
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Sackmann E, Tanaka M. Critical role of lipid membranes in polarization and migration of cells: a biophysical view. Biophys Rev 2021; 13:123-138. [PMID: 33747247 PMCID: PMC7930189 DOI: 10.1007/s12551-021-00781-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/03/2021] [Indexed: 12/15/2022] Open
Abstract
Cell migration plays vital roles in many biologically relevant processes such as tissue morphogenesis and cancer metastasis, and it has fascinated biophysicists over the past several decades. However, despite an increasing number of studies highlighting the orchestration of proteins involved in different signaling pathways, the functional roles of lipid membranes have been essentially overlooked. Lipid membranes are generally considered to be a functionless two-dimensional matrix of proteins, although many proteins regulating cell migration gain functions only after they are recruited to the membrane surface and self-organize their functional domains. In this review, we summarize how the logistical recruitment and release of proteins to and from lipid membranes coordinates complex spatiotemporal molecular processes. As predicted from the classical framework of the Smoluchowski equation of diffusion, lipid/protein membranes serve as a 2D reaction hub that contributes to the effective and robust regulation of polarization and migration of cells involving several competing pathways.
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Affiliation(s)
- Erich Sackmann
- Physics Department E22/E27, Technical University of Munich, James-Franck-Strasse, 85747 Garching, Germany
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120 Heidelberg, Germany.,Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501 Japan
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7
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Stiehl T, Wang W, Lutz C, Marciniak-Czochra A. Mathematical Modeling Provides Evidence for Niche Competition in Human AML and Serves as a Tool to Improve Risk Stratification. Cancer Res 2020; 80:3983-3992. [PMID: 32651258 DOI: 10.1158/0008-5472.can-20-0283] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 06/10/2020] [Accepted: 07/07/2020] [Indexed: 11/16/2022]
Abstract
Acute myeloid leukemia (AML) is a stem cell-driven malignant disease. There is evidence that leukemic stem cells (LSC) interact with stem cell niches and outcompete hematopoietic stem cells (HSC). The impact of this interaction on the clinical course of the disease remains poorly understood. We developed and validated a mathematical model of stem cell competition in the human HSC niche. Model simulations predicted how processes in the stem cell niche affect the speed of disease progression. Combining the mathematical model with data of individual patients, we quantified the selective pressure LSCs exert on HSCs and demonstrated the model's prognostic significance. A novel model-based risk-stratification approach allowed extraction of prognostic information from counts of healthy and malignant cells at the time of diagnosis. This model's feasibility was demonstrable based on a cohort of patients with ALDH-rare AML and shows that the model-based risk stratification is an independent predictor of disease-free and overall survival. This proof-of-concept study shows how model-based interpretation of patient data can improve prognostic scoring and contribute to personalized medicine. SIGNIFICANCE: Combining a novel mathematical model of the human hematopoietic stem cell niche with individual patient data enables quantification of properties of leukemic stem cells and improves risk stratification in acute myeloid leukemia.
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Affiliation(s)
- Thomas Stiehl
- Institute of Applied Mathematics and Interdisciplinary Center for Scientific Computing (IWR), Heidelberg University, Heidelberg, Germany.
| | - Wenwen Wang
- Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Christoph Lutz
- Department of Medicine V, Heidelberg University, Heidelberg, Germany
| | - Anna Marciniak-Czochra
- Institute of Applied Mathematics, Interdisciplinary Center for Scientific Computing (IWR) and Bioquant Center, Heidelberg University, Heidelberg, Germany
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8
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Abstract
A new method to quantify the influence of mobilization agents on the dynamics of human hematopoietic stem and progenitor cells (HSPC) is introduced. Different from the microscopy-based high-content screening relying on multiple staining, machine learning, and molecular-level perturbation, the proposed method sheds light on the "dynamics" of HSPC in the presence of extrinsic factors, including SDF1α and mobilization agents. A well-defined model of the bone marrow niche is fabricated by the deposition of planar lipid membranes on glass slides (called supported membranes) displaying ligand molecules at precisely controlled surface densities. The dynamics of human HSPC, CD34+ cells from umbilical cord blood or peripheral blood, are monitored by time-lapse, live cell imaging with a standard phase-contrast microscopy or a specially designed microinterferometry in the absence or presence of mobilization agents. After extracting the contour of each cell, one can analyze the dynamics of cell "shapes" step-by-step, yielding various levels of information ranging from the principal mode of deformation, the persistence of deformation patterns, and the energy consumption by HSPC in the absence and presence of mobilization agents. Moreover, by tracking the migration trajectories of HSPC, one can gain insight how mobilization agents influence the "motion" of HSPC. As these readouts can be connected to a theoretical model, this strategy enables one to classify the influence of not only mobilization agents but also target-specific inhibitors or other treatments in quantitative indices.
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9
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Ladikou EE, Chevassut T, Pepper CJ, Pepper AG. Dissecting the role of the CXCL12/CXCR4 axis in acute myeloid leukaemia. Br J Haematol 2020; 189:815-825. [PMID: 32135579 DOI: 10.1111/bjh.16456] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/03/2019] [Indexed: 02/06/2023]
Abstract
Acute myeloid leukaemia (AML) is the most common adult acute leukaemia with the lowest survival rate. It is characterised by a build-up of immature myeloid cells anchored in the protective niche of the bone marrow (BM) microenvironment. The CXCL12/CXCR4 axis is central to the pathogenesis of AML as it has fundamental control over AML cell adhesion into the protective BM niche, adaptation to the hypoxic environment, cellular migration and survival. High levels of CXCR4 expression are associated with poor relapse-free and overall survival. The CXCR4 ligand, CXCL12 (SDF-1), is expressed by multiple cells types in the BM, facilitating the adhesion and survival of the malignant clone. Blocking the CXCL12/CXCR4 axis is an attractive therapeutic strategy providing a 'multi-hit' therapy that both prevents essential survival signals and releases the AML cells from the BM into the circulation. Once out of the protective niche of the BM they would be more susceptible to destruction by conventional chemotherapeutic drugs. In this review, we disentangle the diverse roles of the CXCL12/CXCR4 axis in AML. We then describe multiple CXCR4 inhibitors, including small molecules, peptides, or monoclonal antibodies, which have been developed to date and their progress in pre-clinical and clinical trials. Finally, the review leads us to the conclusion that there is a need for further investigation into the development of a 'multi-hit' therapy that targets several signalling pathways related to AML cell adhesion and maintenance in the BM.
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Affiliation(s)
- Eleni E Ladikou
- Brighton and Sussex Medical School, University of Sussex, Brighton, UK.,Royal Sussex County Hospital, Brighton, UK
| | - Timothy Chevassut
- Brighton and Sussex Medical School, University of Sussex, Brighton, UK.,Royal Sussex County Hospital, Brighton, UK
| | - Chris J Pepper
- Brighton and Sussex Medical School, University of Sussex, Brighton, UK
| | - Andrea Gs Pepper
- Brighton and Sussex Medical School, University of Sussex, Brighton, UK
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10
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Paddillaya N, Mishra A, Kondaiah P, Pullarkat P, Menon GI, Gundiah N. Biophysics of Cell-Substrate Interactions Under Shear. Front Cell Dev Biol 2019; 7:251. [PMID: 31781558 PMCID: PMC6857480 DOI: 10.3389/fcell.2019.00251] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/10/2019] [Indexed: 12/31/2022] Open
Abstract
Cells adhere to substrates through mechanosensitive focal adhesion complexes. Measurements that probe how cells detach from substrates when they experience an applied force connect molecular-scale aspects of cell adhesion with the biophysical properties of adherent cells. Such forces can be applied through shear devices that flow fluid in a controlled manner across cells. The signaling pathways associated with focal adhesions, in particular those that involve integrins and receptor tyrosine kinases, are complex, receiving mechano-chemical feedback from the sensing of substrate stiffness as well as of external forces. This article reviews the signaling processes involved in mechanosensing and mechanotransduction during cell-substrate interactions, describing the role such signaling plays in cancer metastasis. We examine some recent progress in quantifying the strength of these interactions, describing a novel fluid shear device that allows for the visualization of the cell and its sub-cellular structures under a shear flow. We also summarize related results from a biophysical model for cellular de-adhesion induced by applied forces. Quantifying cell-substrate adhesions under shear should aid in the development of mechano-diagnostic techniques for diseases in which cell-adhesion is mis-regulated, such as cancers.
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Affiliation(s)
- Neha Paddillaya
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India
| | - Ashish Mishra
- Soft Condensed Matter Group, Raman Research Institute, Bangalore, India
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Pramod Pullarkat
- Soft Condensed Matter Group, Raman Research Institute, Bangalore, India
| | - Gautam I Menon
- The Institute of Mathematical Sciences, Chennai, India.,Homi Bhabha National Institute, Mumbai, India.,Department of Physics, Ashoka University, Sonepat, India
| | - Namrata Gundiah
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India.,Department of Mechanical Engineering, Indian Institute of Science, Bangalore, India
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11
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Gülcüler Balta GS, Monzel C, Kleber S, Beaudouin J, Balta E, Kaindl T, Chen S, Gao L, Thiemann M, Wirtz CR, Samstag Y, Tanaka M, Martin-Villalba A. 3D Cellular Architecture Modulates Tyrosine Kinase Activity, Thereby Switching CD95-Mediated Apoptosis to Survival. Cell Rep 2019; 29:2295-2306.e6. [DOI: 10.1016/j.celrep.2019.10.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 08/14/2019] [Accepted: 10/11/2019] [Indexed: 12/13/2022] Open
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12
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Fonseca ICCFE, da Luz FAC, Uehara IA, Silva MJB. Cell-adhesion molecules and their soluble forms: Promising predictors of "tumor progression" and relapse in leukemia. Tumour Biol 2018; 40:1010428318811525. [PMID: 30486756 DOI: 10.1177/1010428318811525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Some surface markers are used to discriminate certain leukemic subpopulations that retain a greater oncogenic potential than others, and, for this reason, they were termed as leukemic stem cells, similar to the concept of cancer stem cells in carcinoma. Among these surface markers are proteins involved in cell-cell adhesion or cell-matrix adhesion, and they may play a role in the relapse of leukemia, similar to metastasis in carcinomas. The most important are epithelial cadherin, neural cadherin, epithelial cell-adhesion molecule, and CD44, which can be cleaved and released, and their soluble forms were found increased in serum levels of cancer patients, being implicated, in some cases, with progression, metastases, and relapse. In this review, we highlighted the role of these four adhesion molecules in carcinomas and hematological malignancies, mainly leukemia, and discuss if the serum levels of soluble forms can be correlated with the surface protein status on the leukemic cells. Accession of the soluble forms looks attractive, but their use as markers in cancer must be studied in association with other parameters, as there are significant changes in levels in other pathological conditions besides cancer. Studies correlating the levels of the forms with the status of the membrane-bound proteins in leukemic (stem) cells and correlating those parameters with relapse in leukemia may afford important knowledge and applicability of those serum markers in clinical practice. For instance, the expression of the membrane-bound forms of these adhesion proteins may have promising clinical use in leukemia and other hematological malignancies.
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Affiliation(s)
| | - Felipe Andrés Cordero da Luz
- 1 Laboratory of Tumor Biomarkers and Osteoimmunology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
- 2 Nucleus of Cancer Prevention and Research, Cancer Hospital, Federal University of Uberlândia, Uberlândia, Brazil
| | - Isadora Akemi Uehara
- 1 Laboratory of Tumor Biomarkers and Osteoimmunology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
| | - Marcelo José Barbosa Silva
- 1 Laboratory of Tumor Biomarkers and Osteoimmunology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Brazil
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13
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Amadei F, Fröhlich B, Stremmel W, Tanaka M. Nonclassical Interactions of Phosphatidylcholine with Mucin Protect Intestinal Surfaces: A Microinterferometry Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14046-14057. [PMID: 30359036 DOI: 10.1021/acs.langmuir.8b03035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Albeit many studies demonstrated that the accumulation of phospholipids in the intestinal mucosal surfaces is essential for the protection of colon epithelia against pathogenic bacteria, the mechanism of interactions between phospholipids and the surface protein mucin is not well understood. In this study, the significance of interfacial interactions between phospholipids and mucin proteins was quantified by the combination of an in vitro intestinal surface model and label-free microinterferometry. The model of intestinal surfaces consists of planar lipid membranes deposited on solid substrates (supported membranes) that display mucin proteins at defined surface densities. Following the quantitative characterization of the systems, we monitored the vertical fluctuation of 10 μm-large particles on model intestinal surfaces by using microinterferometry, and calculated the effective interfacial interaction potentials by analytically solving the Langevin equation. We found that the spring constant of interfacial potentials calculated based on a harmonic approximation increased concomitantly with the increase in surface potentials, indicating the dominant role of electrostatic interactions. Intriguingly, the spring constants of particles coated with phospholipids do not follow electrostatic interactions. The spring constant of particles coated with zwitterionic phosphatidylcholine was larger compared to membranes incorporating positively or negatively charged lipids. Our data suggested the presence of another underlying molecular level interaction, such as phosphocholine-saccharide interactions. The fact that phosphatidylcholine sustains the binding capability to enzymatically degraded mucin suggests that the direct delivery of phosphatidylcholine to the damaged mucus is a promising strategy for the better treatment of patients affected by inflammatory bowel diseases.
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Affiliation(s)
- Federico Amadei
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
| | - Benjamin Fröhlich
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
| | - Wolfgang Stremmel
- Medical Center Baden-Baden , D76530 Baden-Baden , Germany
- Internal Medicine IV , University Hospital Heidelberg , D69120 Heidelberg , Germany
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
- Center for Integrative Medicine and Physics, Institute for Advanced Study , Kyoto University , 606-8501 Kyoto , Japan
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14
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Lamas-Murua M, Stolp B, Kaw S, Thoma J, Tsopoulidis N, Trautz B, Ambiel I, Reif T, Arora S, Imle A, Tibroni N, Wu J, Cui G, Stein JV, Tanaka M, Lyck R, Fackler OT. HIV-1 Nef Disrupts CD4 + T Lymphocyte Polarity, Extravasation, and Homing to Lymph Nodes via Its Nef-Associated Kinase Complex Interface. THE JOURNAL OF IMMUNOLOGY 2018; 201:2731-2743. [PMID: 30257886 DOI: 10.4049/jimmunol.1701420] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 08/21/2018] [Indexed: 12/31/2022]
Abstract
HIV-1 Nef is a multifunctional protein that optimizes virus spread and promotes immune evasion of infected cells to accelerate disease progression in AIDS patients. As one of its activities, Nef reduces the motility of infected CD4+ T lymphocytes in confined space. In vivo, Nef restricts T lymphocyte homing to lymph nodes as it reduces the ability for extravasation at the diapedesis step. Effects of Nef on T lymphocyte motility are typically mediated by its ability to reduce actin remodeling. However, interference with diapedesis does not depend on residues in Nef required for inhibition of host cell actin dynamics. In search for an alternative mechanism by which Nef could alter T lymphocyte extravasation, we noted that the viral protein interferes with the polarization of primary human CD4+ T lymphocytes upon infection with HIV-1. Expression of Nef alone is sufficient to disrupt T cell polarization, and this effect is conserved among lentiviral Nef proteins. Nef acts by arresting the oscillation of CD4+ T cells between polarized and nonpolarized morphologies. Mapping studies identified the binding site for the Nef-associated kinase complex (NAKC) as critical determinant of this Nef activity and a NAKC-binding-deficient Nef variant fails to impair CD4+ T lymphocyte extravasation and homing to lymph nodes. These results thus imply the disruption of T lymphocyte polarity via its NAKC binding site as a novel mechanism by which lentiviral Nef proteins alter T lymphocyte migration in vivo.
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Affiliation(s)
- Miguel Lamas-Murua
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Bettina Stolp
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Sheetal Kaw
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Judith Thoma
- Physical Chemistry of Biosystems, University of Heidelberg, 69120 Heidelberg, Germany
| | - Nikolaos Tsopoulidis
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Birthe Trautz
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Ina Ambiel
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Tatjana Reif
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Sakshi Arora
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Andrea Imle
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Nadine Tibroni
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Jingxia Wu
- T Cell Metabolism (D140), German Cancer Research Centre, 69120 Heidelberg, Germany
| | - Guoliang Cui
- T Cell Metabolism (D140), German Cancer Research Centre, 69120 Heidelberg, Germany
| | - Jens V Stein
- Theodor Kocher Institute, University of Bern, 3012 Bern, Switzerland; and
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, University of Heidelberg, 69120 Heidelberg, Germany.,Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto 606-8501, Japan
| | - Ruth Lyck
- Theodor Kocher Institute, University of Bern, 3012 Bern, Switzerland; and
| | - Oliver T Fackler
- Department of Infectious Diseases, Integrative Virology, University Hospital Heidelberg, 69120 Heidelberg, Germany;
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15
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Tyrovola JB. The "mechanostat" principle in cell differentiation. The osteochondroprogenitor paradigm. J Cell Biochem 2018; 120:37-44. [PMID: 30144147 DOI: 10.1002/jcb.27509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 07/25/2018] [Indexed: 12/13/2022]
Abstract
The "mechanostat" principle may be depicted as an oscillating signal of a signaling molecule, in which the amplitude, frequency, cumulative level, delay, and duration of the curve encode the information for concrete cellular responses and biological activities. When the oscillating signal is kept sustained (present delay), cell exit may be performed, whereas when the oscillating signal remains robust, cell proliferation may take place. B-catenin-Wnt signaling pathway has a key role in the differentiation of osteochondroprogenitor cells. Sustained downregulation of the β-catenin-Wnt pathway forces osteochondroprogenitors to a chondrogenic fate instead of an osteoblastic one. Other signaling, for example, bone morphogenetic protein and Notch signaling pathways interact with the Wnt pathway. The crosstalk between biochemical and mechanical stimuli produces the final information that leads to the final cell fate decisions, through the "mechanostat" principle.
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16
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Ohta T, Monzel C, Becker AS, Ho AD, Tanaka M. Simple Physical Model Unravels Influences of Chemokine on Shape Deformation and Migration of Human Hematopoietic Stem Cells. Sci Rep 2018; 8:10630. [PMID: 30006633 PMCID: PMC6045678 DOI: 10.1038/s41598-018-28750-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 06/29/2018] [Indexed: 01/15/2023] Open
Abstract
We studied the dynamic behavior of human hematopoietic stem cells (HSC) on the in vitro model of bone marrow surfaces in the absence and presence of chemokine (SDF1α). The deformation and migration of cells were investigated by varying the chemokine concentration and surface density of ligand molecules. Since HSC used in this study were primary cells extracted from the human umbilical cord blood, it is not possible to introduce molecular reporter systems before or during the live cell imaging. To account for the experimental observations, we propose a simple and general theoretical model for cell crawling. In contrast to other theoretical models reported previously, our model focuses on the nonlinear coupling between shape deformation and translational motion and is free from any molecular-level process. Therefore, it is ideally suited for the comparison with our experimental results. We have demonstrated that the results in the absence of SDF1α were well recapitulated by the linear model, while the nonlinear model is necessary to reproduce the elongated migration observed in the presence of SDF1α. The combination of the simple theoretical model and the label-free, live cell observations of human primary cells opens a large potential to numerically identify the differential effects of extrinsic factors such as chemokines, growth factors, and clinical drugs on dynamic phenotypes of primary cells.
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Affiliation(s)
- Takao Ohta
- Department of Physics, The University of Tokyo, Tokyo, 113-0033, Japan. .,Toyota Physical and Chemical Research Institute, Nagakute, Aichi, 480-1192, Japan. .,Center for Integrative Medicine and Physics, Institute for Advanced Studies, Kyoto University, 606-8501, Kyoto, Japan.
| | - Cornelia Monzel
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, D69210, Heidelberg, Germany.,Experimental Medical Physics, Heinrich-Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Alexandra S Becker
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, D69210, Heidelberg, Germany
| | - Anthony D Ho
- Department of Medicine V, Heidelberg University, D69120, Heidelberg, Germany
| | - Motomu Tanaka
- Center for Integrative Medicine and Physics, Institute for Advanced Studies, Kyoto University, 606-8501, Kyoto, Japan. .,Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, D69210, Heidelberg, Germany.
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17
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Koçer G, Jonkheijm P. About Chemical Strategies to Fabricate Cell-Instructive Biointerfaces with Static and Dynamic Complexity. Adv Healthc Mater 2018; 7:e1701192. [PMID: 29717821 DOI: 10.1002/adhm.201701192] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 02/12/2018] [Indexed: 12/21/2022]
Abstract
Properly functioning cell-instructive biointerfaces are critical for healthy integration of biomedical devices in the body and serve as decisive tools for the advancement of our understanding of fundamental cell biological phenomena. Studies are reviewed that use covalent chemistries to fabricate cell-instructive biointerfaces. These types of biointerfaces typically result in a static presentation of predefined cell-instructive cues. Chemically defined, but dynamic cell-instructive biointerfaces introduce spatiotemporal control over cell-instructive cues and present another type of biointerface, which promises a more biomimetic way to guide cell behavior. Therefore, strategies that offer control over the lateral sorting of ligands, the availability and molecular structure of bioactive ligands, and strategies that offer the ability to induce physical, chemical and mechanical changes in situ are reviewed. Specific attention is paid to state-of-the-art studies on dynamic, cell-instructive 3D materials. Future work is expected to further deepen our understanding of molecular and cellular biological processes investigating cell-type specific responses and the translational steps toward targeted in vivo applications.
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Affiliation(s)
- Gülistan Koçer
- TechMed Centre and MESA Institute for Nanotechnology; University of Twente; 7500 AE Enschede The Netherlands
- Institute of Biomaterials and Biomedical Engineering; University of Toronto; Toronto M5S 3G9 Ontario Canada
| | - Pascal Jonkheijm
- TechMed Centre and MESA Institute for Nanotechnology; University of Twente; 7500 AE Enschede The Netherlands
- Institute of Biomaterials and Biomedical Engineering; University of Toronto; Toronto M5S 3G9 Ontario Canada
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18
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Monzel C, Becker AS, Saffrich R, Wuchter P, Eckstein V, Ho AD, Tanaka M. Dynamic cellular phynotyping defines specific mobilization mechanisms of human hematopoietic stem and progenitor cells induced by SDF1α versus synthetic agents. Sci Rep 2018; 8:1841. [PMID: 29382856 PMCID: PMC5789976 DOI: 10.1038/s41598-018-19557-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/03/2018] [Indexed: 02/06/2023] Open
Abstract
Efficient mobilization of hematopoietic stem and progenitor cells (HSPC) is one of the most crucial issues for harvesting an adequate amount of peripheral HSPC for successful clinical transplantation. Applying well-defined surrogate models for the bone marrow niche, live cell imaging techniques, and novel tools in statistical physics, we have quantified the functionality of two mobilization agents that have been applied in the clinic, NOX-A12 and AMD3100 (plerixafor), as compared to a naturally occurring chemokine in the bone marrow, SDF1α. We found that NOX-A12, an L-enantiomeric RNA oligonucleotide to SDF1, significantly reduced the adhesion of HSPC to the niche surface mediated via the CXCR4-SDF1α axis, and stretched the migration trajectories of the HSPC. We found that the stretching of trajectories by NOX-A12 was more prominent than that by SDF1α. In contrast, plerixafor exhibited no detectable interference with adhesion and migration. We also found that the deformation of HSPC induced by SDF1α or plerixafor was also drastically suppressed in the presence of NOX-A12. This novel technology of quantitative assessment of "dynamic phenotypes" by physical tools has therefore enabled us to define different mechanisms of function for various extrinsic factors compared to naturally occurring chemokines.
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Affiliation(s)
- Cornelia Monzel
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany.,Laboratoire Physico-Chimie, Institut Curie, CNRS UMR168, 75005, Paris, France
| | - Alexandra S Becker
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Rainer Saffrich
- Department of Medicine V, Heidelberg University, 69120, Heidelberg, Germany.,Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service Baden-Württemberg - Hessen, 68167, Mannheim, Germany
| | - Patrick Wuchter
- Department of Medicine V, Heidelberg University, 69120, Heidelberg, Germany.,Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service Baden-Württemberg - Hessen, 68167, Mannheim, Germany
| | - Volker Eckstein
- Department of Medicine V, Heidelberg University, 69120, Heidelberg, Germany
| | - Anthony D Ho
- Department of Medicine V, Heidelberg University, 69120, Heidelberg, Germany.
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany. .,Institute for Integrated Cell-Material Sciences, Kyoto University, 606-8501, Kyoto, Japan.
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19
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Hörning M, Nakahata M, Linke P, Yamamoto A, Veschgini M, Kaufmann S, Takashima Y, Harada A, Tanaka M. Dynamic Mechano-Regulation of Myoblast Cells on Supramolecular Hydrogels Cross-Linked by Reversible Host-Guest Interactions. Sci Rep 2017; 7:7660. [PMID: 28794475 PMCID: PMC5550483 DOI: 10.1038/s41598-017-07934-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 07/05/2017] [Indexed: 01/09/2023] Open
Abstract
A new class of supramolecular hydrogels, cross-linked by host-guest interactions between β-cyclodextrin (βCD) and adamantane, were designed for the dynamic regulation of cell-substrate interactions. The initial substrate elasticity can be optimized by selecting the molar fraction of host- and guest monomers for the target cells. Moreover, owing to the reversible nature of host-guest interactions, the magnitude of softening and stiffening of the substrate can be modulated by varying the concentrations of free, competing host molecules (βCD) in solutions. By changing the substrate elasticity at a desired time point, it is possible to switch the micromechanical environments of cells. We demonstrated that the Young's modulus of our "host-guest gels", 4-11 kPa, lies in an optimal range not only for static (ex situ) but also for dynamic (in situ) regulation of cell morphology and cytoskeletal ordering of myoblasts. Compared to other stimulus-responsive materials that can either change the elasticity only in one direction or rely on less biocompatible stimuli such as UV light and temperature change, our supramolecular hydrogel enables to reversibly apply mechanical cues to various cell types in vitro without interfering cell viability.
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Affiliation(s)
- Marcel Hörning
- Institute for Integrated Cell-Material Science (WPI iCeMS), Kyoto University, Kyoto, 606-8501, Japan
- Institute of Biomaterials and Biomolecular Systems (IBBS), University of Stuttgart, 70569, Stuttgart, Germany
| | - Masaki Nakahata
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
- Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka, 560-8531, Japan
| | - Philipp Linke
- Physical Chemistry of Biosystems, University of Heidelberg, D69120, Heidelberg, Germany
| | - Akihisa Yamamoto
- Institute for Integrated Cell-Material Science (WPI iCeMS), Kyoto University, Kyoto, 606-8501, Japan
| | - Mariam Veschgini
- Physical Chemistry of Biosystems, University of Heidelberg, D69120, Heidelberg, Germany
| | - Stefan Kaufmann
- Physical Chemistry of Biosystems, University of Heidelberg, D69120, Heidelberg, Germany
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Akira Harada
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan.
| | - Motomu Tanaka
- Institute for Integrated Cell-Material Science (WPI iCeMS), Kyoto University, Kyoto, 606-8501, Japan.
- Physical Chemistry of Biosystems, University of Heidelberg, D69120, Heidelberg, Germany.
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20
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Kinetic stability analysis of protein assembly on the center manifold around the critical point. BMC SYSTEMS BIOLOGY 2017; 11:13. [PMID: 28153012 PMCID: PMC5288876 DOI: 10.1186/s12918-017-0391-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 01/05/2017] [Indexed: 11/22/2022]
Abstract
Background Non-linear kinetic analysis is a useful method for illustration of the dynamic behavior of cellular biological systems. To date, center manifold theory (CMT) has not been sufficiently applied for stability analysis of biological systems. The aim of this study is to demonstrate the application of CMT to kinetic analysis of protein assembly and disassembly, and to propose a novel framework for nonlinear multi-parametric analysis. We propose a protein assembly model with nonlinear kinetics provided by the fluctuation in monomer concentrations during their diffusion. Results When the diffusion process of a monomer is self-limited to give kinetics non-linearity, numerical simulations suggest the probability that the assembly and disassembly oscillate near the critical point. We applied CMT to kinetic analysis of the center manifold around the critical point in detail, and successfully demonstrated bifurcation around the critical point, which explained the observed oscillation. Conclusions The stability kinetics of the present model based on CMT illustrates a unique feature of protein assembly, namely non-linear behavior. Our findings are expected to provide methodology for analysis of biological systems.
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21
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Koçer G, Jonkheijm P. Guiding hMSC Adhesion and Differentiation on Supported Lipid Bilayers. Adv Healthc Mater 2017; 6. [PMID: 27893196 DOI: 10.1002/adhm.201600862] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/25/2016] [Indexed: 11/11/2022]
Abstract
Mesenchymal stem cells (MSCs) are intensively investigated for regenerative medicine applications due to their ease of isolation and multilineage differentiation capacity. Hence, designing instructive microenvironments to guide MSC behavior is important for the generation of smart interfaces to enhance biomaterial performance in guiding desired tissue formation. Supported lipid bilayers (SLBs) as cell membrane mimetics can be employed as biological interfaces with easily tunable characteristics such as biospecificity, mobility, and density of predesigned ligand molecules. Arg-Gly-Asp (RGD) ligand functionalized SLBs are explored for guiding human MSC (hMSC) adhesion and differentiation by studying the effect of changes in ligand density and mobility. Cellular and molecular analyses show that adhesion occurs through specific interactions with RGD ligands where the extent is positively correlated to changes in ligand density. Furthermore, cell area is significantly regulated by ligand density on ligand-mobile SLBs when compared to ligand-immobile SLBs. Finally, the osteogenic differentiation capacity of hMSCs is positively correlated to ligand density on ligand-mobile SLBs indicating that regulation of cell spreading is linked to cell differentiation capacity. These results demonstrate that hMSC behavior can be directed on SLBs by molecular design and presents SLBs as versatile platforms for future engineering of smart biomaterial coatings.
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Affiliation(s)
- Gülistan Koçer
- Bioinspired Molecular Engineering Laboratory; MIRA Institute for Biomedical Technology; Technical Medicine and Molecular Nanofabrication Group; MESA+ Institute for Nanotechnology; University of Twente; 7500 AE Enschede The Netherlands
| | - Pascal Jonkheijm
- Bioinspired Molecular Engineering Laboratory; MIRA Institute for Biomedical Technology; Technical Medicine and Molecular Nanofabrication Group; MESA+ Institute for Nanotechnology; University of Twente; 7500 AE Enschede The Netherlands
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22
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Shatirishvili M, Burk AS, Franz CM, Pace G, Kastilan T, Breuhahn K, Hinterseer E, Dierich A, Bakiri L, Wagner EF, Ponta H, Hartmann TN, Tanaka M, Orian-Rousseau V. Epidermal-specific deletion of CD44 reveals a function in keratinocytes in response to mechanical stress. Cell Death Dis 2016; 7:e2461. [PMID: 27831556 PMCID: PMC5260879 DOI: 10.1038/cddis.2016.342] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/18/2016] [Accepted: 09/23/2016] [Indexed: 11/09/2022]
Abstract
CD44, a large family of transmembrane glycoproteins, plays decisive roles in physiological and pathological conditions. CD44 isoforms are involved in several signaling pathways essential for life such as growth factor-induced signaling by EGF, HGF or VEGF. CD44 is also the main hyaluronan (HA) receptor and as such is involved in HA-dependent processes. To allow a genetic dissection of CD44 functions in homeostasis and disease, we generated a Cd44 floxed allele allowing tissue- and time-specific inactivation of all CD44 isoforms in vivo. As a proof of principle, we inactivated Cd44 in the skin epidermis using the K14Cre allele. Although the skin of such Cd44Δker mutants appeared morphologically normal, epidermal stiffness was reduced, wound healing delayed and TPA induced epidermal thickening decreased. These phenotypes might be caused by cell autonomous defects in differentiation and HA production as well as impaired adhesion and migration on HA by Cd44Δker keratinocytes. These findings support the usefulness of the conditional Cd44 allele in unraveling essential physiological and pathological functions of CD44 isoforms.
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Affiliation(s)
- M Shatirishvili
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - A S Burk
- University of Heidelberg, Institute of Physical Chemistry, Heidelberg, Germany
| | - C M Franz
- Karlsruhe Institute of Technology, DFG-Center for Functional Nanostructures, Karlsruhe, Germany
| | - G Pace
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - T Kastilan
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - K Breuhahn
- Heidelberg University Hospital, Institute of Pathology, Heidelberg, Germany
| | - E Hinterseer
- Laboratory for Immunological and Molecular Cancer Research, Third Medical Department with Hematology, Medical Oncology, Hemostaseology, Infectious Diseases, and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria
| | - A Dierich
- Institut Clinique de la Souris Illkirch, Illkirch, France
| | - L Bakiri
- Spanish National Cancer Centre, Genes Development and Disease Group, Cancer Cell Biology Programme, Madrid, Spain
| | - E F Wagner
- Spanish National Cancer Centre, Genes Development and Disease Group, Cancer Cell Biology Programme, Madrid, Spain
| | - H Ponta
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
| | - T N Hartmann
- Laboratory for Immunological and Molecular Cancer Research, Third Medical Department with Hematology, Medical Oncology, Hemostaseology, Infectious Diseases, and Rheumatology, Oncologic Center, Paracelsus Medical University, Salzburg, Austria
| | - M Tanaka
- University of Heidelberg, Institute of Physical Chemistry, Heidelberg, Germany.,Institute for Integrated Cell-Material Sciences (WPI iCeMS), Kyoto University, Kyoto 606-8501, Japan
| | - V Orian-Rousseau
- Karlsruhe Institute of Technology, Institute of Toxicology and Genetics, Karlsruhe, Germany
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23
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Blank N, Lisenko K, Pavel P, Bruckner T, Ho AD, Wuchter P. Low-dose cyclophosphamide effectively mobilizes peripheral blood stem cells in patients with autoimmune disease. Eur J Haematol 2016; 97:78-82. [PMID: 26381040 DOI: 10.1111/ejh.12686] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2015] [Indexed: 12/29/2022]
Abstract
For patients with severe and refractory autoimmune diseases, high-dose chemotherapy and autologous hematopoietic stem cell transplantation has been established as a considerable therapeutic option in recent years. In this retrospective single-center analysis, we assessed the feasibility and efficacy of peripheral blood stem cells (PBSC) mobilization and collection in 35 patients with refractory autoimmune disease (AID). The mobilization data of 15 patients with systemic sclerosis (SSc), 11 patients with multiple sclerosis (MS), and 9 patients with other AID were analyzed. Stem cell mobilization with cyclophosphamide chemotherapy 2 × 2 g/m(2) (n = 16) or 1 × 2 g/m(2) (n = 17) and G-CSF followed by PBSC collection was performed between 1999 and 2015. Leukapheresis was performed in 16 inpatients and 19 outpatients. All patients reached their collection goal and no collection failures were observed. The median PBSC collection result was 12.2 (SSc), 8.0 (MS), and 8.2 (other AID) × 10(6) CD34+ cells/kg, respectively. Twenty-five of 35 (71%) patients achieved a sufficient collection with one leukapheresis session, while 6 patients (17%) required two and 4 patients (11%) required three or more leukapheresis sessions. No correlation of the collected PBSC number was observed regarding age, body weight, diagnosis, disease duration, skin sclerosis, or previous cyclophosphamide. Mobilization chemotherapy with cyclophosphamide 2 × 2 g/m(2) and 1 × 2 g/m(2) delivered comparable mobilization results with leukapheresis on day 13 or 14. In summary, we demonstrate that PBSC collection is safe and feasible in patients with AID. Mobilization chemotherapy with cyclophosphamide 1 × 2 g/m(2) and 2 × 2 g/m(2) is equally effective in those patients.
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Affiliation(s)
- Norbert Blank
- Department of Medicine V, University of Heidelberg, Heidelberg, Germany
| | - Katharina Lisenko
- Department of Medicine V, University of Heidelberg, Heidelberg, Germany
| | - Petra Pavel
- Stem Cell Laboratory, IKTZ Heidelberg GmbH, Heidelberg, Germany
| | - Thomas Bruckner
- Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Anthony D Ho
- Department of Medicine V, University of Heidelberg, Heidelberg, Germany
| | - Patrick Wuchter
- Department of Medicine V, University of Heidelberg, Heidelberg, Germany
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