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Dunaway LS, Luse MA, Nyshadham S, Bulut G, Alencar GF, Chavkin NW, Cortese-Krott M, Hirschi KK, Isakson BE. Obesogenic diet disrupts tissue-specific mitochondrial gene signatures in the artery and capillary endothelium. Physiol Genomics 2024; 56:113-127. [PMID: 37982169 DOI: 10.1152/physiolgenomics.00109.2023] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/03/2023] [Accepted: 11/13/2023] [Indexed: 11/21/2023] Open
Abstract
Endothelial cells (ECs) adapt to the unique needs of their resident tissue and metabolic perturbations, such as obesity. We sought to understand how obesity affects EC metabolic phenotypes, specifically mitochondrial gene expression. We investigated the mesenteric and adipose endothelium because these vascular beds have distinct roles in lipid homeostasis. Initially, we performed bulk RNA sequencing on ECs from mouse adipose and mesenteric vasculatures after a normal chow (NC) diet or high-fat diet (HFD) and found higher mitochondrial gene expression in adipose ECs compared with mesenteric ECs in both NC and HFD mice. Next, we performed single-cell RNA sequencing and categorized ECs as arterial, capillary, venous, or lymphatic. We found mitochondrial genes to be enriched in adipose compared with mesentery under NC conditions in artery and capillary ECs. After HFD, these genes were decreased in adipose ECs, becoming like mesenteric ECs. Transcription factor analysis revealed that peroxisome proliferator-activated receptor-γ (PPAR-γ) had high specificity in NC adipose artery and capillary ECs. These findings were recapitulated in single-nuclei RNA-sequencing data from human visceral adipose. The sum of these findings suggests that mesenteric and adipose arterial ECs metabolize lipids differently, and the transcriptional phenotype of the vascular beds converges in obesity due to downregulation of PPAR-γ in adipose artery and capillary ECs.NEW & NOTEWORTHY Using bulk and single-cell RNA sequencing on endothelial cells from adipose and mesentery, we found that an obesogenic diet induces a reduction in adipose endothelial oxidative phosphorylation gene expression, resulting in a phenotypic convergence of mesenteric and adipose endothelial cells. Furthermore, we found evidence that PPAR-γ drives this phenotypic shift. Mining of human data sets segregated based on body mass index supported these findings. These data point to novel mechanisms by which obesity induces endothelial dysfunction.
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Affiliation(s)
- Luke S Dunaway
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Melissa A Luse
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Shruthi Nyshadham
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Gamze Bulut
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Gabriel F Alencar
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Nicholas W Chavkin
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Miriam Cortese-Krott
- Department of Cardiology, Pneumology and Angiology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Karen K Hirschi
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, Virginia, United States
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2
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Cleuren A, Molema G. Organotypic heterogeneity in microvascular endothelial cell responses in sepsis-a molecular treasure trove and pharmacological Gordian knot. Front Med (Lausanne) 2023; 10:1252021. [PMID: 38020105 PMCID: PMC10665520 DOI: 10.3389/fmed.2023.1252021] [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: 07/03/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
In the last decades, it has become evident that endothelial cells (ECs) in the microvasculature play an important role in the pathophysiology of sepsis-associated multiple organ dysfunction syndrome (MODS). Studies on how ECs orchestrate leukocyte recruitment, control microvascular integrity and permeability, and regulate the haemostatic balance have provided a wealth of knowledge and potential molecular targets that could be considered for pharmacological intervention in sepsis. Yet, this information has not been translated into effective treatments. As MODS affects specific vascular beds, (organotypic) endothelial heterogeneity may be an important contributing factor to this lack of success. On the other hand, given the involvement of ECs in sepsis, this heterogeneity could also be leveraged for therapeutic gain to target specific sites of the vasculature given its full accessibility to drugs. In this review, we describe current knowledge that defines heterogeneity of organ-specific microvascular ECs at the molecular level and elaborate on studies that have reported EC responses across organ systems in sepsis patients and animal models of sepsis. We discuss hypothesis-driven, single-molecule studies that have formed the basis of our understanding of endothelial cell engagement in sepsis pathophysiology, and include recent studies employing high-throughput technologies. The latter deliver comprehensive data sets to describe molecular signatures for organotypic ECs that could lead to new hypotheses and form the foundation for rational pharmacological intervention and biomarker panel development. Particularly results from single cell RNA sequencing and spatial transcriptomics studies are eagerly awaited as they are expected to unveil the full spatiotemporal signature of EC responses to sepsis. With increasing awareness of the existence of distinct sepsis subphenotypes, and the need to develop new drug regimen and companion diagnostics, a better understanding of the molecular pathways exploited by ECs in sepsis pathophysiology will be a cornerstone to halt the detrimental processes that lead to MODS.
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Affiliation(s)
- Audrey Cleuren
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Grietje Molema
- Department Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Liu B, Yi D, Yu Z, Pan J, Ramirez K, Li S, Wang T, Glembotski CC, Fallon MB, Oh SP, Gu M, Kalucka J, Dai Z. TMEM100, a Lung-Specific Endothelium Gene. Arterioscler Thromb Vasc Biol 2022; 42:1495-1497. [PMID: 36252125 PMCID: PMC9691553 DOI: 10.1161/atvbaha.122.317683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Bin Liu
- Division of Pulmonary, Critical Care and Sleep, University of Arizona, Phoenix, Arizona, USA
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA
| | - Dan Yi
- Division of Pulmonary, Critical Care and Sleep, University of Arizona, Phoenix, Arizona, USA
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA
| | - Zhiyun Yu
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Jiakai Pan
- Division of Pulmonary, Critical Care and Sleep, University of Arizona, Phoenix, Arizona, USA
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
| | - Karina Ramirez
- Division of Pulmonary, Critical Care and Sleep, University of Arizona, Phoenix, Arizona, USA
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
| | - Shuai Li
- Division of Pulmonary, Critical Care and Sleep, University of Arizona, Phoenix, Arizona, USA
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
- Department of Biochemistry, Guangdong Medical University, Guangzhou, China
| | - Ting Wang
- Division of Pulmonary, Critical Care and Sleep, University of Arizona, Phoenix, Arizona, USA
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
- Department of Environmental Health Science and Center of Translational Science, Florida International University, Port Saint Lucie, Florida, USA
| | - Christopher C. Glembotski
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA
| | - Michael B. Fallon
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
| | - S. Paul Oh
- Department of Neurobiology, Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Mingxia Gu
- Perinatal Institute, Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Joanna Kalucka
- Aarhus Institute of Advanced Studies (AIAS), Department of Biomedicine, Aarhus University, Aarhus DK-8000, Denmark
| | - Zhiyu Dai
- Division of Pulmonary, Critical Care and Sleep, University of Arizona, Phoenix, Arizona, USA
- Department of Internal Medicine, University of Arizona, Phoenix, Arizona, USA
- Translational Cardiovascular Research Center, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA
- BIO5 Institute, University of Arizona, Tucson, Arizona, USA
- Sarver Heart Center, University of Arizona, Tucson, Arizona, USA
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Pappalardo A, Herron L, Alvarez Cespedes DE, Abaci HE. Quantitative Evaluation of Human Umbilical Vein and Induced Pluripotent Stem Cell-Derived Endothelial Cells as an Alternative Cell Source to Skin-Specific Endothelial Cells in Engineered Skin Grafts. Adv Wound Care (New Rochelle) 2021; 10:490-502. [PMID: 32870778 DOI: 10.1089/wound.2020.1163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 01/16/2023] Open
Abstract
Objective: We compared the capability of human umbilical vein endothelial cells (HUVECs), induced pluripotent stem cell (iPSC)-derived endothelial cells (iECs), and human dermal blood endothelial cells (HDBECs) to effectively vascularize engineered human skin constructs (HSCs) in vitro and on immunodeficient mice. Approach: We quantified the angiogenesis within HSCs both in vitro and in vivo through computational analyses of immunofluorescent (IF) staining. We assayed with real-time quantitative PCR (RT-qPCR) the expression of key endothelial, dermal, and epidermal genes in 2D culture and HSCs. Epidermal integrity and proliferation were also evaluated through haematoxylin and eosin staining, and IF staining. Results: IF confirmed iEC commitment to endothelial phenotype. RT-qPCR showed HUVECs and iECs immaturity compared with HDBECs. In vitro, the vascular network extension was comparable for HDBECs and HUVECs despite differences in vascular diameter, whereas iECs formed unorganized rudimentary tubular structures. In vivo, all ECs produced discrete vascular networks of varying dimensions. HUVECs and HDBECs maintained a higher proliferation of basal keratinocytes. HDBECs had the best impact on extracellular matrix expression, and epidermal proliferation and differentiation. Innovation: To our knowledge, this study represents the first direct and quantitative comparison of HDBECs, HUVECs, and iECs angiogenic performance in HSCs. Conclusions: Our data indicate that HUVECs and iECs can be an alternative cell source to HDBEC to promote the short-term viability of prevascularized engineered grafts. Nevertheless, HDBECs maintain their capillary identity and outperform other EC types in promoting the maturation of the dermis and epidermis. These intrinsic characteristics of HDBECs may influence the long-term function of skin grafts.
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Affiliation(s)
- Alberto Pappalardo
- Dermatology Department, Columbia University Medical Center, New York, New York, USA
| | - Lauren Herron
- Dermatology Department, Columbia University Medical Center, New York, New York, USA
| | | | - Hasan Erbil Abaci
- Dermatology Department, Columbia University Medical Center, New York, New York, USA
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Dawson A, Wang Y, Li Y, LeMaire SA, Shen YH. New Technologies With Increased Precision Improve Understanding of Endothelial Cell Heterogeneity in Cardiovascular Health and Disease. Front Cell Dev Biol 2021; 9:679995. [PMID: 34513826 PMCID: PMC8430032 DOI: 10.3389/fcell.2021.679995] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/17/2021] [Indexed: 01/08/2023] Open
Abstract
Endothelial cells (ECs) are vital for blood vessel integrity and have roles in maintaining normal vascular function, healing after injury, and vascular dysfunction. Extensive phenotypic heterogeneity has been observed among ECs of different types of blood vessels in the normal and diseased vascular wall. Although ECs with different phenotypes can share common functions, each has unique features that may dictate a fine-tuned role in vascular health and disease. Recent studies performed with single-cell technology have generated powerful information that has significantly improved our understanding of EC biology. Here, we summarize a variety of EC types, states, and phenotypes recently identified by using new, increasingly precise techniques in transcriptome analysis.
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Affiliation(s)
- Ashley Dawson
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
| | - Yidan Wang
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
| | - Yanming Li
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
| | - Scott A. LeMaire
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
- Department of Cardiovascular Surgery, Texas Heart Institute, Houston, TX, United States
| | - Ying H. Shen
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, United States
- Department of Cardiovascular Surgery, Texas Heart Institute, Houston, TX, United States
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Petrillo S, Cantelmo AR, Genova T, Munaron L. Editorial: Mechanisms of Vessel Development: From a Primitive Draft to a Mature Vasculature. Front Physiol 2021; 12:725531. [PMID: 34335315 PMCID: PMC8322619 DOI: 10.3389/fphys.2021.725531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 06/22/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC), University of Turin, Turin, Italy
| | - Anna Rita Cantelmo
- University Lille, Inserm, U1003-PHYCEL-Physiologie Cellulaire, Lille, France
| | - Tullio Genova
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Luca Munaron
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
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7
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Galis ZS. Editorial: Where Is Waldo: Contextualizing the Endothelial Cell in the Era of Precision Biology. Front Cardiovasc Med 2020; 7:127. [PMID: 32850985 PMCID: PMC7412703 DOI: 10.3389/fcvm.2020.00127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/19/2020] [Indexed: 01/08/2023] Open
Affiliation(s)
- Zorina S Galis
- National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, United States
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Xiang M, Grosso RA, Takeda A, Pan J, Bekkhus T, Brulois K, Dermadi D, Nordling S, Vanlandewijck M, Jalkanen S, Ulvmar MH, Butcher EC. A Single-Cell Transcriptional Roadmap of the Mouse and Human Lymph Node Lymphatic Vasculature. Front Cardiovasc Med 2020; 7:52. [PMID: 32426372 PMCID: PMC7204639 DOI: 10.3389/fcvm.2020.00052] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 03/18/2020] [Indexed: 01/08/2023] Open
Abstract
Single-cell transcriptomics promise to revolutionize our understanding of the vasculature. Emerging computational methods applied to high-dimensional single-cell data allow integration of results between samples and species and illuminate the diversity and underlying developmental and architectural organization of cell populations. Here, we illustrate these methods in the analysis of mouse lymph node (LN) lymphatic endothelial cells (LEC) at single-cell resolution. Clustering identifies five well-delineated subsets, including two medullary sinus subsets not previously recognized as distinct. Nearest neighbor alignments in trajectory space position the major subsets in a sequence that recapitulates the known features and suggests novel features of LN lymphatic organization, providing a transcriptional map of the lymphatic endothelial niches and of the transitions between them. Differences in gene expression reveal specialized programs for (1) subcapsular ceiling endothelial interactions with the capsule connective tissue and cells; (2) subcapsular floor regulation of lymph borne cell entry into the LN parenchyma and antigen presentation; and (3) pathogen interactions and (4) LN remodeling in distinct medullary subsets. LEC of the subcapsular sinus floor and medulla, which represent major sites of cell entry and exit from the LN parenchyma respectively, respond robustly to oxazolone inflammation challenge with enriched signaling pathways that converge on both innate and adaptive immune responses. Integration of mouse and human single-cell profiles reveals a conserved cross-species pattern of lymphatic vascular niches and gene expression, as well as specialized human subsets and genes unique to each species. The examples provided demonstrate the power of single-cell analysis in elucidating endothelial cell heterogeneity, vascular organization, and endothelial cell responses. We discuss the findings from the perspective of LEC functions in relation to niche formations in the unique stromal and highly immunological environment of the LN.
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Affiliation(s)
- Menglan Xiang
- Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University School of Medicine, Stanford, CA, United States
- Palo Alto Veterans Institute for Research, Palo Alto, CA, United States
- The Center for Molecular Biology and Medicine, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States
| | - Rubén Adrián Grosso
- The Beijer Laboratory, Department Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Akira Takeda
- MediCity Research Laboratory and Institute of Biomedicine, University of Turku, Turku, Finland
| | - Junliang Pan
- Palo Alto Veterans Institute for Research, Palo Alto, CA, United States
- The Center for Molecular Biology and Medicine, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States
| | - Tove Bekkhus
- The Beijer Laboratory, Department Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Kevin Brulois
- Palo Alto Veterans Institute for Research, Palo Alto, CA, United States
- The Center for Molecular Biology and Medicine, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States
| | - Denis Dermadi
- Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University School of Medicine, Stanford, CA, United States
- Palo Alto Veterans Institute for Research, Palo Alto, CA, United States
| | - Sofia Nordling
- Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University School of Medicine, Stanford, CA, United States
- Palo Alto Veterans Institute for Research, Palo Alto, CA, United States
- The Center for Molecular Biology and Medicine, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States
| | - Michael Vanlandewijck
- The Beijer Laboratory, Department Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
- Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Stockholm, Sweden
| | - Sirpa Jalkanen
- MediCity Research Laboratory and Institute of Biomedicine, University of Turku, Turku, Finland
| | - Maria H. Ulvmar
- The Beijer Laboratory, Department Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Eugene C. Butcher
- Laboratory of Immunology and Vascular Biology, Department of Pathology, Stanford University School of Medicine, Stanford, CA, United States
- Palo Alto Veterans Institute for Research, Palo Alto, CA, United States
- The Center for Molecular Biology and Medicine, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, United States
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Chen Q, Liu Y, Jeong HW, Stehling M, Dinh VV, Zhou B, Adams RH. Apelin + Endothelial Niche Cells Control Hematopoiesis and Mediate Vascular Regeneration after Myeloablative Injury. Cell Stem Cell 2019; 25:768-783.e6. [PMID: 31761723 PMCID: PMC6900750 DOI: 10.1016/j.stem.2019.10.006] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [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: 04/23/2019] [Revised: 08/02/2019] [Accepted: 10/18/2019] [Indexed: 12/12/2022]
Abstract
Radiotherapy and chemotherapy disrupt bone vasculature, but the underlying causes and mechanisms enabling vessel regeneration after bone marrow (BM) transplantation remain poorly understood. Here, we show that loss of hematopoietic cells per se, in response to irradiation and other treatments, triggers vessel dilation, permeability, and endothelial cell (EC) proliferation. We further identify a small subpopulation of Apelin-expressing (Apln+) ECs, representing 0.003% of BM cells, that is critical for physiological homeostasis and transplant-induced BM regeneration. Genetic ablation of Apln+ ECs or Apln-CreER-mediated deletion of Kitl and Vegfr2 disrupt hematopoietic stem cell (HSC) maintenance and contributions to regeneration. Consistently, the fraction of Apln+ ECs increases substantially after irradiation and promotes normalization of the bone vasculature in response to VEGF-A, which is provided by transplanted hematopoietic stem and progenitor cells (HSPCs). Together, these findings reveal critical functional roles for HSPCs in maintaining vascular integrity and for Apln+ ECs in hematopoiesis, suggesting potential targets for improving BM transplantation. Loss of hematopoietic cells phenocopies irradiation-induced vascular defects Identification and characterization of Apln+ ECs in adult BM Apln+ ECs regulate HSC maintenance and steady-state hematopoiesis Apln+ ECs expand, respond to HSPCs, and drive post-transplantation recovery
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Affiliation(s)
- Qi Chen
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Yang Liu
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Hyun-Woo Jeong
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Martin Stehling
- Electron Microscopy and Flow Cytometry Units, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Van Vuong Dinh
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Bin Zhou
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, 320 Yueyang Road, A-2112, Shanghai 200031, China
| | - Ralf H Adams
- Max Planck Institute for Molecular Biomedicine, Department of Tissue Morphogenesis, and University of Münster, Faculty of Medicine, Röntgenstrasse 20, 48149 Münster, Germany.
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10
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Breitbach M, Kimura K, Luis TC, Fuegemann CJ, Woll PS, Hesse M, Facchini R, Rieck S, Jobin K, Reinhardt J, Ohneda O, Wenzel D, Geisen C, Kurts C, Kastenmüller W, Hölzel M, Jacobsen SEW, Fleischmann BK. In Vivo Labeling by CD73 Marks Multipotent Stromal Cells and Highlights Endothelial Heterogeneity in the Bone Marrow Niche. Cell Stem Cell 2019; 22:262-276.e7. [PMID: 29451855 DOI: 10.1016/j.stem.2018.01.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 06/25/2017] [Accepted: 01/11/2018] [Indexed: 01/01/2023]
Abstract
Despite much work studying ex vivo multipotent stromal cells (MSCs), the identity and characteristics of MSCs in vivo are not well defined. Here, we generated a CD73-EGFP reporter mouse to address these questions and found EGFP+ MSCs in various organs. In vivo, EGFP+ mesenchymal cells were observed in fetal and adult bones at proliferative ossification sites, while in solid organs EGFP+ cells exhibited a perivascular distribution pattern. EGFP+ cells from the bone compartment could be clonally expanded ex vivo from single cells and displayed trilineage differentiation potential. Moreover, in the central bone marrow CD73-EGFP+ specifically labeled sinusoidal endothelial cells, thought to be a critical component of the hematopoietic stem cell niche. Purification and molecular characterization of this CD73-EGFP+ population revealed an endothelial subtype that also displays a mesenchymal signature, highlighting endothelial cell heterogeneity in the marrow. Thus, the CD73-EGFP mouse is a powerful tool for studying MSCs and sinusoidal endothelium.
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Affiliation(s)
- Martin Breitbach
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany.
| | - Kenichi Kimura
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany; Department of Cardiac Surgery, Medical Faculty, University of Bonn, 53105 Bonn, Germany; Department of Regenerative Medicine and Stem Cell Biology, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Tiago C Luis
- MRC Molecular Hematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Christopher J Fuegemann
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany
| | - Petter S Woll
- MRC Molecular Hematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; Department of Medicine Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Michael Hesse
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany; Department of Cardiac Surgery, Medical Faculty, University of Bonn, 53105 Bonn, Germany
| | - Raffaella Facchini
- MRC Molecular Hematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Sarah Rieck
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany
| | - Katarzyna Jobin
- Institute of Experimental Immunology, University of Bonn, 53105 Bonn, Germany
| | - Julia Reinhardt
- Department of Clinical Chemistry and Clinical Pharmacology, University of Bonn, 53105 Bonn, Germany
| | - Osamu Ohneda
- Department of Regenerative Medicine and Stem Cell Biology, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
| | - Daniela Wenzel
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany
| | - Caroline Geisen
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany; Department of Cardiac Surgery, Medical Faculty, University of Bonn, 53105 Bonn, Germany
| | - Christian Kurts
- Institute of Experimental Immunology, University of Bonn, 53105 Bonn, Germany
| | | | - Michael Hölzel
- Department of Clinical Chemistry and Clinical Pharmacology, University of Bonn, 53105 Bonn, Germany
| | - Sten E W Jacobsen
- MRC Molecular Hematology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; Department of Medicine Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cell and Molecular Biology, Wallenberg Institute for Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden; Karolinska University Hospital, Stockholm, Sweden
| | - Bernd K Fleischmann
- Institute of Physiology I, Life&Brain Center, Medical Faculty, University of Bonn, 53105 Bonn, Germany.
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Hauser S, Jung F, Pietzsch J. Human Endothelial Cell Models in Biomaterial Research. Trends Biotechnol 2016; 35:265-277. [PMID: 27789063 DOI: 10.1016/j.tibtech.2016.09.007] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [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: 05/20/2016] [Revised: 09/15/2016] [Accepted: 09/28/2016] [Indexed: 01/05/2023]
Abstract
Endothelial cell (EC) models have evolved as important tools in biomaterial research due to ubiquitously occurring interactions between implanted materials and the endothelium. However, screening the available literature has revealed a gap between material scientists and physiologists in terms of their understanding of these biomaterial-endothelium interactions and their relative importance. Consequently, EC models are often applied in nonphysiological experimental setups, or too extensive conclusions are drawn from their results. The question arises whether this might be one reason why, among the many potential biomaterials, only a few have found their way into the clinic. In this review, we provide an overview of established EC models and possible selection criteria to enable researchers to determine the most reliable and relevant EC model to use.
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Affiliation(s)
- Sandra Hauser
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department Radiopharmaceutical and Chemical Biology, Dresden, Germany
| | - Friedrich Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany; Helmholtz Virtual Institute 'Multifunctional Biomaterials for Medicine', Teltow, Germany
| | - Jens Pietzsch
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Department Radiopharmaceutical and Chemical Biology, Dresden, Germany; Technische Universität Dresden, Department of Chemistry and Food Chemistry, Dresden, Germany.
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Curry FRE, Adamson RH. Vascular permeability modulation at the cell, microvessel, or whole organ level: towards closing gaps in our knowledge. Cardiovasc Res 2010; 87:218-29. [PMID: 20418473 PMCID: PMC2895542 DOI: 10.1093/cvr/cvq115] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Revised: 04/13/2010] [Accepted: 04/19/2010] [Indexed: 01/20/2023] Open
Abstract
Multiple processes modulate net blood-to-tissue exchange in a microvascular unit in normal and pathophysiological conditions. These include mechanisms that control the number and type of microvessels perfused, the balance of adhesion and contractile forces that determine the conductance of the spaces between endothelial cells to water and solutes, the pressure and chemical potential gradients determining the driving forces through these conductive pathways, and the organization of barriers to macromolecules in the endothelial glycocalyx. Powerful methods are available to investigate these mechanisms at the levels of cultured endothelial monolayers, isolated microvessels, and the microvascular units within intact organs. Here we focus on current problems that limit the integration of our knowledge of mechanisms investigated in detail at the cellular level into a more complete understanding of modulation of blood-to-tissue exchange in whole organs when the endothelial barrier is exposed to acute and more long-term inflammatory conditions. First, we review updated methods, applicable in mouse models of vascular permeability regulation, to investigate both acute and long-term changes in permeability. Methods to distinguish tracer accumulation due to change in perfusion from real increases in extravascular accumulation are emphasized. The second part of the review compares normal and increased permeability in individually perfused venular microvessels and endothelial cell monolayers. The heterogeneity of endothelial cell phenotypes in the baseline state and after exposure to injury and inflammatory conditions is emphasized. Lastly, we review new approaches to investigation of the glycocalyx barrier properties in cultured endothelial monolayers and in whole-body investigations.
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Affiliation(s)
- Fitz-Roy E Curry
- Department of Physiology and Membrane Biology, School of Medicine, University of California, 1 Shields Avenue, Davis, CA 95616, USA.
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