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Home P, Ghosh A, Kumar RP, Ray S, Gunewardena S, Kumar R, Dasgupta P, Roy N, Saha A, Ouseph MM, Leone GW, Paul S. A Single Trophoblast Layer Acts as the Gatekeeper at the Endothelial-Hematopoietic Crossroad in the Placenta. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.12.603303. [PMID: 39071312 PMCID: PMC11275844 DOI: 10.1101/2024.07.12.603303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
During embryonic development the placental vasculature acts as a major hematopoietic niche, where endothelial to hematopoietic transition ensures emergence of hematopoietic stem cells (HSCs). However, the molecular mechanisms that regulate the placental hematoendothelial niche are poorly understood. Using a parietal trophoblast giant cell (TGC)-specific knockout mouse model and single-cell RNA-sequencing, we show that the paracrine factors secreted by the TGCs are critical in the development of this niche. Disruptions in the TGC-specific paracrine signaling leads to the loss of HSC population and the concomitant expansion of a KDR+/DLL4+/PROM1+ hematoendothelial cell-population in the placenta. Combining single-cell transcriptomics and receptor-ligand pair analyses, we also define the parietal TGC-dependent paracrine signaling network and identify Integrin signaling as a fundamental regulator of this process. Our study elucidates novel mechanisms by which non-autonomous signaling from the primary parietal TGCs maintain the delicate placental hematopoietic-angiogenic balance and ensures embryonic and extraembryonic development.
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Affiliation(s)
- Pratik Home
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Present address: XenoTech, A BioIVT Company, 1101 W Cambridge Cir Dr, Kansas City, KS 66103
| | - Ananya Ghosh
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Present address: Department of Urology, University of California San Francisco, 35, Medical 12 Center Way, San Francisco, CA 94143
| | - Ram Parikshan Kumar
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Institute for Reproductive Health and Perinatal Research, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Soma Ray
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Sumedha Gunewardena
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Rajnish Kumar
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Purbasa Dasgupta
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Namrata Roy
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Abhik Saha
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Madhu M. Ouseph
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY 10065
| | - Gustavo W. Leone
- Department of Biochemistry, Medical College of Wisconsin, WI 53226, USA
| | - Soumen Paul
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Institute for Reproductive Health and Perinatal Research, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Department of Obstetrics and Gynecology, University of Kansas Medical Center, Kansas City, KS 66160, USA
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Subramanian S, Thoms JAI, Huang Y, Cornejo-Páramo P, Koch FC, Jacquelin S, Shen S, Song E, Joshi S, Brownlee C, Woll PS, Chacon-Fajardo D, Beck D, Curtis DJ, Yehson K, Antonenas V, O'Brien T, Trickett A, Powell JA, Lewis ID, Pitson SM, Gandhi MK, Lane SW, Vafaee F, Wong ES, Göttgens B, Alinejad-Rokny H, Wong JWH, Pimanda JE. Genome-wide transcription factor-binding maps reveal cell-specific changes in the regulatory architecture of human HSPCs. Blood 2023; 142:1448-1462. [PMID: 37595278 PMCID: PMC10651876 DOI: 10.1182/blood.2023021120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/06/2023] [Accepted: 07/25/2023] [Indexed: 08/20/2023] Open
Abstract
Hematopoietic stem and progenitor cells (HSPCs) rely on a complex interplay among transcription factors (TFs) to regulate differentiation into mature blood cells. A heptad of TFs (FLI1, ERG, GATA2, RUNX1, TAL1, LYL1, LMO2) bind regulatory elements in bulk CD34+ HSPCs. However, whether specific heptad-TF combinations have distinct roles in regulating hematopoietic differentiation remains unknown. We mapped genome-wide chromatin contacts (HiC, H3K27ac, HiChIP), chromatin modifications (H3K4me3, H3K27ac, H3K27me3) and 10 TF binding profiles (heptad, PU.1, CTCF, STAG2) in HSPC subsets (stem/multipotent progenitors plus common myeloid, granulocyte macrophage, and megakaryocyte erythrocyte progenitors) and found TF occupancy and enhancer-promoter interactions varied significantly across cell types and were associated with cell-type-specific gene expression. Distinct regulatory elements were enriched with specific heptad-TF combinations, including stem-cell-specific elements with ERG, and myeloid- and erythroid-specific elements with combinations of FLI1, RUNX1, GATA2, TAL1, LYL1, and LMO2. Furthermore, heptad-occupied regions in HSPCs were subsequently bound by lineage-defining TFs, including PU.1 and GATA1, suggesting that heptad factors may prime regulatory elements for use in mature cell types. We also found that enhancers with cell-type-specific heptad occupancy shared a common grammar with respect to TF binding motifs, suggesting that combinatorial binding of TF complexes was at least partially regulated by features encoded in DNA sequence motifs. Taken together, this study comprehensively characterizes the gene regulatory landscape in rare subpopulations of human HSPCs. The accompanying data sets should serve as a valuable resource for understanding adult hematopoiesis and a framework for analyzing aberrant regulatory networks in leukemic cells.
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Affiliation(s)
- Shruthi Subramanian
- School of Clinical Medicine, University of New South Wales, Sydney, Australia
| | - Julie A. I. Thoms
- School of Biomedical Sciences, University of New South Wales, Sydney, Australia
| | - Yizhou Huang
- Centre for Health Technologies and the School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia
| | | | - Forrest C. Koch
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, Australia
| | | | - Sylvie Shen
- Bone Marrow Transplant Laboratory, NSW Health Pathology, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Emma Song
- Bone Marrow Transplant Laboratory, NSW Health Pathology, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Swapna Joshi
- School of Clinical Medicine, University of New South Wales, Sydney, Australia
| | - Chris Brownlee
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, Australia
| | - Petter S. Woll
- Department of Medicine, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Diego Chacon-Fajardo
- Centre for Health Technologies and the School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia
| | - Dominik Beck
- Centre for Health Technologies and the School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia
| | - David J. Curtis
- Australian Centre for Blood Diseases, Monash University, Melbourne, VIC, Australia
| | - Kenneth Yehson
- Blood Transplant and Cell Therapies Laboratory, NSW Health Pathology, Westmead, NSW, Australia
| | - Vicki Antonenas
- Blood Transplant and Cell Therapies Laboratory, NSW Health Pathology, Westmead, NSW, Australia
| | | | - Annette Trickett
- Bone Marrow Transplant Laboratory, NSW Health Pathology, Prince of Wales Hospital, Randwick, NSW, Australia
| | - Jason A. Powell
- Centre for Cancer Biology, SA Pathology, University of South Australia, Adelaide, Australia
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Ian D. Lewis
- Centre for Cancer Biology, SA Pathology, University of South Australia, Adelaide, Australia
| | - Stuart M. Pitson
- Centre for Cancer Biology, SA Pathology, University of South Australia, Adelaide, Australia
| | - Maher K. Gandhi
- Blood Cancer Research Group, Mater Research, The University of Queensland, Brisbane, QLD, Australia
| | - Steven W. Lane
- Cancer Program, QIMR Berghofer Medical Research, Brisbane, Australia
| | - Fatemeh Vafaee
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, Australia
- UNSW Data Science Hub, University of New South Wales, Sydney, Australia
| | - Emily S. Wong
- Victor Chang Cardiac Research Institute, Sydney, Australia
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, Australia
| | - Berthold Göttgens
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
| | - Hamid Alinejad-Rokny
- BioMedical Machine Learning Lab, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, Australia
| | - Jason W. H. Wong
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - John E. Pimanda
- School of Clinical Medicine, University of New South Wales, Sydney, Australia
- School of Biomedical Sciences, University of New South Wales, Sydney, Australia
- Haematology Department, Prince of Wales Hospital, Sydney, Australia
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In vivo clonal tracking reveals evidence of haemangioblast and haematomesoblast contribution to yolk sac haematopoiesis. Nat Commun 2023; 14:41. [PMID: 36596806 PMCID: PMC9810727 DOI: 10.1038/s41467-022-35744-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 12/22/2022] [Indexed: 01/05/2023] Open
Abstract
During embryogenesis, haematopoietic and endothelial lineages emerge closely in time and space. It is thought that the first blood and endothelium derive from a common clonal ancestor, the haemangioblast. However, investigation of candidate haemangioblasts in vitro revealed the capacity for mesenchymal differentiation, a feature more compatible with an earlier mesodermal precursor. To date, no evidence for an in vivo haemangioblast has been discovered. Using single cell RNA-Sequencing and in vivo cellular barcoding, we have unravelled the ancestral relationships that give rise to the haematopoietic lineages of the yolk sac, the endothelium, and the mesenchyme. We show that the mesodermal derivatives of the yolk sac are produced by three distinct precursors with dual-lineage outcomes: the haemangioblast, the mesenchymoangioblast, and a previously undescribed cell type: the haematomesoblast. Between E5.5 and E7.5, this trio of precursors seeds haematopoietic, endothelial, and mesenchymal trajectories.
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Sandin ES, Folberth J, Müller-Fielitz H, Pietrzik CU, Herold E, Willnow TE, Pfluger PT, Nogueiras R, Prevot V, Krey T, Schwaninger M. Is LRP2 Involved in Leptin Transport over the Blood-Brain Barrier and Development of Obesity? Int J Mol Sci 2021; 22:ijms22094998. [PMID: 34066779 PMCID: PMC8125945 DOI: 10.3390/ijms22094998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 12/13/2022] Open
Abstract
The mechanisms underlying the transport of leptin into the brain are still largely unclear. While the leptin receptor has been implicated in the transport process, recent evidence has suggested an additional role of LRP2 (megalin). To evaluate the function of LRP2 for leptin transport across the blood-brain barrier (BBB), we developed a novel leptin-luciferase fusion protein (pLG), which stimulated leptin signaling and was transported in an in vitro BBB model based on porcine endothelial cells. The LRP inhibitor RAP did not affect leptin transport, arguing against a role of LRP2. In line with this, the selective deletion of LRP2 in brain endothelial cells and epithelial cells of the choroid plexus did not influence bodyweight, body composition, food intake, or energy expenditure of mice. These findings suggest that LRP2 at the BBB is not involved in the transport of leptin into the brain, nor in the development of obesity as has previously been described.
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Affiliation(s)
- Elvira S. Sandin
- Institute for Experimental and Clinical Pharmacology and Toxicology, Center of Brain, Behavior and Metabolism, University of Lübeck, 23562 Lübeck, Germany; (E.S.S.); (J.F.); (H.M.-F.)
| | - Julica Folberth
- Institute for Experimental and Clinical Pharmacology and Toxicology, Center of Brain, Behavior and Metabolism, University of Lübeck, 23562 Lübeck, Germany; (E.S.S.); (J.F.); (H.M.-F.)
| | - Helge Müller-Fielitz
- Institute for Experimental and Clinical Pharmacology and Toxicology, Center of Brain, Behavior and Metabolism, University of Lübeck, 23562 Lübeck, Germany; (E.S.S.); (J.F.); (H.M.-F.)
| | - Claus U. Pietrzik
- Institute for Pathobiochemistry, University Medical Center of Johannes Gutenberg University Mainz, 55099 Mainz, Germany;
| | - Elisabeth Herold
- Institute of Biochemistry, Center of Structural and Cell Biology in Medicine, University of Lübeck, 23562 Lübeck, Germany; (E.H.); (T.K.)
| | - Thomas E. Willnow
- Molecular Cardiovascular Research, Max-Delbrueck-Center for Molecular Medicine, 13092 Berlin, Germany;
| | - Paul T. Pfluger
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München and Technical University Munich, 85764 Neuherberg, Germany;
| | - Ruben Nogueiras
- CIMUS, Universidade de Santiago de Compostela-Instituto de Investigación Sanitaria, 15782 Santiago de Compostela, Spain;
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15782 Santiago de Compostela, Spain
| | - Vincent Prevot
- Lille Neuroscience & Cognition, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Inserm, CHU Lille, University Lille, UMR-S1172, EGID, DISTALZ, F-59000 Lille, France;
| | - Thomas Krey
- Institute of Biochemistry, Center of Structural and Cell Biology in Medicine, University of Lübeck, 23562 Lübeck, Germany; (E.H.); (T.K.)
- German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, 22607 Hamburg, Germany
- Excellence Cluster 2155 RESIST, Hannover Medical School, 30625 Hannover, Germany
- Centre for Structural Systems Biology (CSSB), 22607 Hamburg, Germany
- Institute of Virology, Hannover Medical School, 30625 Hannover, Germany
| | - Markus Schwaninger
- Institute for Experimental and Clinical Pharmacology and Toxicology, Center of Brain, Behavior and Metabolism, University of Lübeck, 23562 Lübeck, Germany; (E.S.S.); (J.F.); (H.M.-F.)
- Correspondence: ; Tel.: +49-451-3101-7200
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