1
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Fetsko AR, Sebo DJ, Budzynski LB, Scharbarth A, Taylor MR. IL-1β disrupts the initiation of blood-brain barrier development by inhibiting endothelial Wnt/β-catenin signaling. iScience 2024; 27:109651. [PMID: 38638574 PMCID: PMC11025013 DOI: 10.1016/j.isci.2024.109651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 02/06/2024] [Accepted: 03/29/2024] [Indexed: 04/20/2024] Open
Abstract
During neuroinflammation, the proinflammatory cytokine interleukin-1β (IL-1β) impacts blood-brain barrier (BBB) function by disrupting brain endothelial tight junctions, promoting vascular permeability, and increasing transmigration of immune cells. Here, we examined the effects of Il-1β on the in vivo initiation of BBB development. We generated doxycycline-inducible transgenic zebrafish to secrete Il-1β in the CNS. To validate the utility of our model, we showed Il-1β dose-dependent mortality, recruitment of neutrophils, and expansion of microglia. Using live imaging, we discovered that Il-1β causes a significant reduction in CNS angiogenesis and barriergenesis. To demonstrate specificity, we rescued the Il-1β induced phenotypes by targeting the zebrafish il1r1 gene using CRISPR-Cas9. Mechanistically, we determined that Il-1β disrupts the initiation of BBB development by decreasing Wnt/β-catenin transcriptional activation in brain endothelial cells. Given that several neurodevelopmental disorders are associated with inflammation, our findings support further investigation into the connections between proinflammatory cytokines, neuroinflammation, and neurovascular development.
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Affiliation(s)
- Audrey R. Fetsko
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Dylan J. Sebo
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Lilyana B. Budzynski
- School of Pharmacy, Pharmacology and Toxicology Program, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Alli Scharbarth
- School of Pharmacy, Pharmacology and Toxicology Program, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Michael R. Taylor
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705, USA
- School of Pharmacy, Pharmacology and Toxicology Program, University of Wisconsin-Madison, Madison, WI 53705, USA
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2
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Colijn S, Nambara M, Malin G, Sacchetti EA, Stratman AN. Identification of distinct vascular mural cell populations during zebrafish embryonic development. Dev Dyn 2024; 253:519-541. [PMID: 38112237 PMCID: PMC11065631 DOI: 10.1002/dvdy.681] [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: 04/06/2023] [Revised: 11/14/2023] [Accepted: 11/29/2023] [Indexed: 12/21/2023] Open
Abstract
BACKGROUND Mural cells are an essential perivascular cell population that associate with blood vessels and contribute to vascular stabilization and tone. In the embryonic zebrafish vasculature, pdgfrb and tagln are commonly used as markers for identifying pericytes and vascular smooth muscle cells. However, the overlapping and distinct expression patterns of these markers in tandem have not been fully described. RESULTS Here, we used the Tg(pdgfrb:Gal4FF; UAS:RFP) and Tg(tagln:NLS-EGFP) transgenic lines to identify single- and double-positive perivascular cell populations on the cranial, axial, and intersegmental vessels between 1 and 5 days postfertilization. From this comparative analysis, we discovered two novel regions of tagln-positive cell populations that have the potential to function as mural cell precursors. Specifically, we found that the hypochord-a reportedly transient structure-contributes to tagln-positive cells along the dorsal aorta. We also identified a unique mural cell progenitor population that resides along the midline between the neural tube and notochord and contributes to intersegmental vessel mural cell coverage. CONCLUSION Together, our findings highlight the variability and versatility of tracking both pdgfrb and tagln expression in mural cells of the developing zebrafish embryo and reveal unexpected embryonic cell populations that express pdgfrb and tagln.
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Affiliation(s)
- Sarah Colijn
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
| | - Miku Nambara
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
| | - Gracie Malin
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
| | - Elena A. Sacchetti
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
| | - Amber N. Stratman
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
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3
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Cheng S, Xia IF, Wanner R, Abello J, Stratman AN, Nicoli S. Hemodynamics regulate spatiotemporal artery muscularization in the developing circle of Willis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.01.569622. [PMID: 38077062 PMCID: PMC10705471 DOI: 10.1101/2023.12.01.569622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Vascular smooth muscle cells (VSMCs) envelop vertebrate brain arteries, playing a crucial role in regulating cerebral blood flow and neurovascular coupling. The dedifferentiation of VSMCs is implicated in cerebrovascular diseases and neurodegeneration. Despite its importance, the process of VSMC differentiation on brain arteries during development remains inadequately characterized. Understanding this process could aid in reprogramming and regenerating differentiated VSMCs in cerebrovascular diseases. In this study, we investigated VSMC differentiation on the zebrafish circle of Willis (CoW), comprising major arteries that supply blood to the vertebrate brain. We observed that the arterial expression of CoW endothelial cells (ECs) occurs after their migration from the cranial venous plexus to form CoW arteries. Subsequently, acta2+ VSMCs differentiate from pdgfrb+ mural cell progenitors upon recruitment to CoW arteries. The progression of VSMC differentiation exhibits a spatiotemporal pattern, advancing from anterior to posterior CoW arteries. Analysis of blood flow suggests that earlier VSMC differentiation in anterior CoW arteries correlates with higher red blood cell velocity wall shear stress. Furthermore, pulsatile blood flow is required for differentiation of human brain pdgfrb+ mural cells into VSMCs as well as VSMC differentiation on zebrafish CoW arteries. Consistently, the flow-responsive transcription factor klf2a is activated in ECs of CoW arteries prior to VSMC differentiation, and klf2a knockdown delays VSMC differentiation on anterior CoW arteries. In summary, our findings highlight the role of blood flow activation of endothelial klf2a as a mechanism regulating the initial VSMC differentiation on vertebrate brain arteries.
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Affiliation(s)
- Siyuan Cheng
- Department of Genetics, Yale School of Medicine, 333 Cedar St, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Section of Cardiology, Department of Internal Medicine, Yale School of Medicine, 300 George St, New Haven, CT 06511, USA
- Vascular Biology & Therapeutics Program, Yale School of Medicine, 10 Amistad St, New Haven, CT 06520, USA
| | - Ivan Fan Xia
- Department of Genetics, Yale School of Medicine, 333 Cedar St, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Section of Cardiology, Department of Internal Medicine, Yale School of Medicine, 300 George St, New Haven, CT 06511, USA
- Vascular Biology & Therapeutics Program, Yale School of Medicine, 10 Amistad St, New Haven, CT 06520, USA
| | - Renate Wanner
- Department of Genetics, Yale School of Medicine, 333 Cedar St, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Section of Cardiology, Department of Internal Medicine, Yale School of Medicine, 300 George St, New Haven, CT 06511, USA
- Vascular Biology & Therapeutics Program, Yale School of Medicine, 10 Amistad St, New Haven, CT 06520, USA
| | - Javier Abello
- Department of Cell Biology & Physiology, School of Medicine, Washington University in St. Louis, 660 S. Euclid Ave, St. Louis, MO 63110, USA
| | - Amber N. Stratman
- Department of Cell Biology & Physiology, School of Medicine, Washington University in St. Louis, 660 S. Euclid Ave, St. Louis, MO 63110, USA
| | - Stefania Nicoli
- Department of Genetics, Yale School of Medicine, 333 Cedar St, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Section of Cardiology, Department of Internal Medicine, Yale School of Medicine, 300 George St, New Haven, CT 06511, USA
- Vascular Biology & Therapeutics Program, Yale School of Medicine, 10 Amistad St, New Haven, CT 06520, USA
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Fetsko AR, Sebo DJ, Budzynski LB, Scharbarth A, Taylor MR. IL-1β disrupts blood-brain barrier development by inhibiting endothelial Wnt/β-catenin signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.04.569943. [PMID: 38106202 PMCID: PMC10723338 DOI: 10.1101/2023.12.04.569943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
During neuroinflammation, the proinflammatory cytokine Interleukin-1β (IL-1β) impacts blood-brain barrier (BBB) function by disrupting brain endothelial tight junctions, promoting vascular permeability, and increasing transmigration of immune cells. Here, we examined the effects of Il-1β on the in vivo development of the BBB. We generated a doxycycline-inducible transgenic zebrafish model that drives secretion of Il-1β in the CNS. To validate the utility of our model, we showed Il-1β dose-dependent mortality, recruitment of neutrophils, and expansion of microglia. Using live imaging, we discovered that Il-1β causes a significant reduction in CNS angiogenesis and barriergenesis. To demonstrate specificity, we rescued the Il-1β induced phenotypes by targeting the zebrafish il1r1 gene using CRISPR/Cas9. Mechanistically, we determined that Il-1β disrupts BBB development by decreasing Wnt/β-catenin transcriptional activation in brain endothelial cells. Given that several neurodevelopmental disorders are associated with inflammation, our findings support further investigation into the connections between proinflammatory cytokines, neuroinflammation, and neurovascular development.
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Affiliation(s)
- Audrey R. Fetsko
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Dylan J. Sebo
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Lilyana B. Budzynski
- School of Pharmacy, Pharmacology and Toxicology Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Alli Scharbarth
- School of Pharmacy, Pharmacology and Toxicology Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Michael R. Taylor
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI, USA
- School of Pharmacy, Pharmacology and Toxicology Program, University of Wisconsin-Madison, Madison, WI, USA
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5
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Chen YC, Martins TA, Marchica V, Panula P. Angiopoietin 1 and integrin beta 1b are vital for zebrafish brain development. Front Cell Neurosci 2024; 17:1289794. [PMID: 38235293 PMCID: PMC10792015 DOI: 10.3389/fncel.2023.1289794] [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: 09/06/2023] [Accepted: 11/30/2023] [Indexed: 01/19/2024] Open
Abstract
Introduction Angiopoietin 1 (angpt1) is essential for angiogenesis. However, its role in neurogenesis is largely undiscovered. This study aimed to identify the role of angpt1 in brain development, the mode of action of angpt1, and its prime targets in the zebrafish brain. Methods We investigated the effects of embryonic brain angiogenesis and neural development using qPCR, in situ hybridization, microangiography, retrograde labeling, and immunostaining in the angpt1sa14264, itgb1bmi371, tekhu1667 mutant fish and transgenic overexpression of angpt1 in the zebrafish larval brains. Results We showed the co-localization of angpt1 with notch, delta, and nestin in the proliferation zone in the larval brain. Additionally, lack of angpt1 was associated with downregulation of TEK tyrosine kinase, endothelial (tek), and several neurogenic factors despite upregulation of integrin beta 1b (itgb1b), angpt2a, vascular endothelial growth factor aa (vegfaa), and glial markers. We further demonstrated that the targeted angpt1sa14264 and itgb1bmi371 mutant fish showed severely irregular cerebrovascular development, aberrant hindbrain patterning, expansion of the radial glial progenitors, downregulation of cell proliferation, deficiencies of dopaminergic, histaminergic, and GABAergic populations in the caudal hypothalamus. In contrast to angpt1sa14264 and itgb1bmi371 mutants, the tekhu1667 mutant fish regularly grew with no apparent phenotypes. Notably, the neural-specific angpt1 overexpression driven by the elavl3 (HuC) promoter significantly increased cell proliferation and neuronal progenitor cells but decreased GABAergic neurons, and this neurogenic activity was independent of its typical receptor tek. Discussion Our results prove that angpt1 and itgb1b, besides regulating vascular development, act as a neurogenic factor via notch and wnt signaling pathways in the neural proliferation zone in the developing brain, indicating a novel role of dual regulation of angpt1 in embryonic neurogenesis that supports the concept of angiopoietin-based therapeutics in neurological disorders.
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Affiliation(s)
- Yu-Chia Chen
- Department of Anatomy, University of Helsinki, Helsinki, Finland
- Zebrafish Unit, Helsinki Institute of Life Science (HiLIFE), Helsinki, Finland
| | - Tomás A. Martins
- Department of Anatomy, University of Helsinki, Helsinki, Finland
- Zebrafish Unit, Helsinki Institute of Life Science (HiLIFE), Helsinki, Finland
| | - Valentina Marchica
- Department of Anatomy, University of Helsinki, Helsinki, Finland
- Zebrafish Unit, Helsinki Institute of Life Science (HiLIFE), Helsinki, Finland
| | - Pertti Panula
- Department of Anatomy, University of Helsinki, Helsinki, Finland
- Zebrafish Unit, Helsinki Institute of Life Science (HiLIFE), Helsinki, Finland
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6
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Valamparamban GF, Spéder P. Homemade: building the structure of the neurogenic niche. Front Cell Dev Biol 2023; 11:1275963. [PMID: 38107074 PMCID: PMC10722289 DOI: 10.3389/fcell.2023.1275963] [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: 08/10/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023] Open
Abstract
Neural stem/progenitor cells live in an intricate cellular environment, the neurogenic niche, which supports their function and enables neurogenesis. The niche is made of a diversity of cell types, including neurons, glia and the vasculature, which are able to signal to and are structurally organised around neural stem/progenitor cells. While the focus has been on how individual cell types signal to and influence the behaviour of neural stem/progenitor cells, very little is actually known on how the niche is assembled during development from multiple cellular origins, and on the role of the resulting topology on these cells. This review proposes to draw a state-of-the art picture of this emerging field of research, with the aim to expose our knowledge on niche architecture and formation from different animal models (mouse, zebrafish and fruit fly). We will span its multiple aspects, from the existence and importance of local, adhesive interactions to the potential emergence of larger-scale topological properties through the careful assembly of diverse cellular and acellular components.
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Affiliation(s)
| | - Pauline Spéder
- Institut Pasteur, Université Paris Cité, CNRS UMR3738, Structure and Signals in the Neurogenic Niche, Paris, France
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7
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Park J, An G, Park H, Hong T, Lim W, Song G. Developmental defects induced by thiabendazole are mediated via apoptosis, oxidative stress and alteration in PI3K/Akt and MAPK pathways in zebrafish. ENVIRONMENT INTERNATIONAL 2023; 176:107973. [PMID: 37196567 DOI: 10.1016/j.envint.2023.107973] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/19/2023]
Abstract
Thiabendazole, a benzimidazole fungicide, is widely used to prevent yield loss in agricultural land by inhibiting plant diseases derived from fungi. As thiabendazole has a stable benzimidazole ring structure, it remains in the environment for an extended period, and its toxic effects on non-target organisms have been reported, indicating the possibility that it could threaten public health. However, little research has been conducted to elucidate the comprehensive mechanisms of its developmental toxicity. Therefore, we used zebrafish, a representative toxicological model that can predict toxicity in aquatic organisms and mammals, to demonstrate the developmental toxicity of thiabendazole. Various morphological malformations were observed, including decreased body length, eye size, and increased heart and yolk sac edema. Apoptosis, reactive oxygen species (ROS) production, and inflammatory response were also triggered by thiabendazole exposure in zebrafish larvae. Furthermore, PI3K/Akt and MAPK signaling pathways important for appropriate organogenesis were significantly changed by thiabendazole. These results led to toxicity in various organs and a reduction in the expression of related genes, including cardiovascular toxicity, neurotoxicity, and hepatic and pancreatic toxicity, which were detected in flk1:eGFP, olig2:dsRED, and L-fabp:dsRed;elastase:GFP transgenic zebrafish models, respectively. Overall, this study partly determined the developmental toxicity of thiabendazole in zebrafish and provided evidence of the environmental hazards of this fungicide.
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Affiliation(s)
- Junho Park
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Garam An
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Hahyun Park
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Taeyeon Hong
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Whasun Lim
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Gwonhwa Song
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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8
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Colijn S, Nambara M, Stratman AN. Identification of overlapping and distinct mural cell populations during early embryonic development. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.03.535476. [PMID: 37066365 PMCID: PMC10104062 DOI: 10.1101/2023.04.03.535476] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Mural cells are an essential perivascular cell population that associate with blood vessels and contribute to vascular stabilization and tone. In the embryonic zebrafish vasculature, pdgfrb and tagln are commonly used as markers for identifying pericytes and vascular smooth muscle cells (vSMCs). However, the expression patterns of these markers used in tandem have not been fully described. Here, we used the Tg(pdgfrb:Gal4FF; UAS:RFP) and Tg(tagln:NLS-EGFP) transgenic lines to identify single- and double-positive perivascular populations in the cranial, axial, and intersegmental vessels between 1 and 5 days post-fertilization. From this comparative analysis, we discovered two novel regions of tagln-positive cell populations that have the potential to function as mural cell precursors. Specifically, we found that the hypochord- a reportedly transient structure-contributes to tagln-positive cells along the dorsal aorta. We also identified a unique sclerotome-derived mural cell progenitor population that resides along the midline between the neural tube and notochord and contributes to intersegmental vessel mural cell coverage. Together, our findings highlight the variability and versatility of tracking pdgfrb and tagln expression in mural cells of the developing zebrafish embryo.
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Affiliation(s)
- Sarah Colijn
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
| | - Miku Nambara
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
| | - Amber N. Stratman
- Department of Cell Biology and Physiology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110
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9
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Fetsko AR, Sebo DJ, Taylor MR. Brain endothelial cells acquire blood-brain barrier properties in the absence of Vegf-dependent CNS angiogenesis. Dev Biol 2023; 494:46-59. [PMID: 36502932 PMCID: PMC9870987 DOI: 10.1016/j.ydbio.2022.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/08/2022] [Accepted: 11/22/2022] [Indexed: 12/13/2022]
Abstract
During neurovascular development, brain endothelial cells (BECs) respond to secreted signals from the neuroectoderm that regulate CNS angiogenesis, the formation of new blood vessels in the brain, and barriergenesis, the acquisition of blood-brain barrier (BBB) properties. Wnt/β-catenin signaling and Vegf signaling are both required for CNS angiogenesis; however, the relationship between these pathways is not understood. Furthermore, while Wnt/β-catenin signaling is essential for barriergenesis, the role of Vegf signaling in this vital process remains unknown. Here, we provide the first direct evidence, to our knowledge, that Vegf signaling is not required for barriergenesis and that activation of Wnt/β-catenin in BECs is independent of Vegf signaling during neurovascular development. Using double transgenic glut1b:mCherry and plvap:EGFP zebrafish (Danio rerio) to visualize the developing brain vasculature, we performed a forward genetic screen and identified a new mutant allele of kdrl, an ortholog of mammalian Vegfr2. The kdrl mutant lacks CNS angiogenesis but, unlike the Wnt/β-catenin pathway mutant gpr124, acquires BBB properties in BECs. To examine Wnt/β-catenin pathway activation in BECs, we chemically inhibited Vegf signaling and found robust expression of the Wnt/β-catenin transcriptional reporter line 7xtcf-Xla.Siam:EGFP. Taken together, our results establish that Vegf signaling is essential for CNS angiogenesis but is not required for Wnt/β-catenin-dependent barriergenesis. Given the clinical significance of either inhibiting pathological angiogenesis or stimulating neovascularization, our study provides valuable new insights that are critical for the development of effective therapies that target the vasculature in neurological disorders.
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Affiliation(s)
- Audrey R Fetsko
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Dylan J Sebo
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Michael R Taylor
- School of Pharmacy, Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI, USA.
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10
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Analysis of Vascular Morphogenesis in Zebrafish. Methods Mol Biol 2023; 2608:425-450. [PMID: 36653721 DOI: 10.1007/978-1-0716-2887-4_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Analysis of cardiovascular development in zebrafish embryos has become a major driver of vascular research in recent years. Imaging-based analyses have allowed the discovery or verification of morphologically distinct processes and mechanisms of, e.g., endothelial cell migration, angiogenic sprouting, tip or stalk cell behavior, and vessel anastomosis. In this chapter, we describe the techniques and tools used for confocal imaging of zebrafish endothelial development in combination with general experimental approaches for molecular dissection of involved signaling pathways.
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11
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Arias-Alpizar G, Papadopoulou P, Rios X, Pulagam KR, Moradi MA, Pattipeiluhu R, Bussmann J, Sommerdijk N, Llop J, Kros A, Campbell F. Phase-Separated Liposomes Hijack Endogenous Lipoprotein Transport and Metabolism Pathways to Target Subsets of Endothelial Cells In Vivo. Adv Healthc Mater 2022; 12:e2202709. [PMID: 36565694 DOI: 10.1002/adhm.202202709] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/14/2022] [Indexed: 12/25/2022]
Abstract
Plasma lipid transport and metabolism are essential to ensure correct cellular function throughout the body. Dynamically regulated in time and space, the well-characterized mechanisms underpinning plasma lipid transport and metabolism offers an enticing, but as yet underexplored, rationale to design synthetic lipid nanoparticles with inherent cell/tissue selectivity. Herein, a systemically administered liposome formulation, composed of just two lipids, that is capable of hijacking a triglyceride lipase-mediated lipid transport pathway resulting in liposome recognition and uptake within specific endothelial cell subsets is described. In the absence of targeting ligands, liposome-lipase interactions are mediated by a unique, phase-separated ("parachute") liposome morphology. Within the embryonic zebrafish, selective liposome accumulation is observed at the developing blood-brain barrier. In mice, extensive liposome accumulation within the liver and spleen - which is reduced, but not eliminated, following small molecule lipase inhibition - supports a role for endothelial lipase but highlights these liposomes are also subject to significant "off-target" by reticuloendothelial system organs. Overall, these compositionally simplistic liposomes offer new insights into the discovery and design of lipid-based nanoparticles that can exploit endogenous lipid transport and metabolism pathways to achieve cell selective targeting in vivo.
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Affiliation(s)
- Gabriela Arias-Alpizar
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands.,Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Panagiota Papadopoulou
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Xabier Rios
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Krishna Reddy Pulagam
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Mohammad-Amin Moradi
- Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, The Netherlands
| | - Roy Pattipeiluhu
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Jeroen Bussmann
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands.,Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Nico Sommerdijk
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525, The Netherlands.,Electron Microscopy Centre, Radboudumc Technology Center Microscopy, Radboud University Medical Center, Geert Grooteplein Zuid 28, Nijmegen, 6525, The Netherlands
| | - Jordi Llop
- Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, The Netherlands
| | - Alexander Kros
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Frederick Campbell
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
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12
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Zhou J, Yang YJ, Gan RH, Wang Y, Li Z, Zhang XJ, Gui JF, Zhou L. Foxl2a and Foxl2b are involved in midbrain-hindbrain boundary development in zebrafish. Gene Expr Patterns 2022; 46:119286. [PMID: 36341978 DOI: 10.1016/j.gep.2022.119286] [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] [Received: 06/08/2022] [Revised: 09/23/2022] [Accepted: 10/24/2022] [Indexed: 11/04/2022]
Abstract
Foxl2 plays conserved central function in ovarian differentiation and maintenance in several fish species. However, its expression pattern and function in fish embryogenesis are still largely unknown. In this study, we first presented a sequential expression pattern of zebrafish foxl2a and foxl2b during embryo development. They were predominantly expressed in the cranial paraxial mesoderm (CPM) and cranial venous vasculature (CVV) during somitogenesis and subsequently expressed in the pharyngeal arches after 48 h post-fertilization (hpf). Then, we compared the brain structures among zebrafish wildtype (WT) and three homozygous foxl2 mutants (foxl2a-/-, foxl2b-/- and foxl2a-/-;foxl2b-/-) and found the reduction of the fourth ventricle in the three foxl2 mutants, especially in foxl2a-/-;foxl2b-/- mutant. Finally, we detected several key transcription factors involved in the gene regulatory network of midbrain-hindbrain boundary (MHB) patterning, such as wnt1, en1b and pax2a. Their expression levels were obviously downregulated in MHB of foxl2a-/- and foxl2a-/-;foxl2b-/- mutants. Thus, we suggest that Foxl2a and Foxl2b are involved in MHB and the fourth ventricle development in zebrafish. The current study provides insights into the molecular mechanism underlying development of brain ventricular system.
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Affiliation(s)
- Jian Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Yan-Jing Yang
- College of Fisheries, Tianjin Agricultural University, China
| | - Rui-Hai Gan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Yang Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Zhi Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Xiao-Juan Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Jian-Fang Gui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China.
| | - Li Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China.
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13
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Tregub PP, Averchuk AS, Baranich TI, Ryazanova MV, Salmina AB. Physiological and Pathological Remodeling of Cerebral Microvessels. Int J Mol Sci 2022; 23:ijms232012683. [PMID: 36293539 PMCID: PMC9603917 DOI: 10.3390/ijms232012683] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/10/2022] [Accepted: 10/18/2022] [Indexed: 11/13/2022] Open
Abstract
There is growing evidence that the remodeling of cerebral microvessels plays an important role in plastic changes in the brain associated with development, experience, learning, and memory consolidation. At the same time, abnormal neoangiogenesis, and deregulated regulation of microvascular regression, or pruning, could contribute to the pathogenesis of neurodevelopmental diseases, stroke, and neurodegeneration. Aberrant remodeling of microvesselsis associated with blood-brain barrier breakdown, development of neuroinflammation, inadequate microcirculation in active brain regions, and leads to the dysfunction of the neurovascular unit and progressive neurological deficits. In this review, we summarize current data on the mechanisms of blood vessel regression and pruning in brain plasticity and in Alzheimer's-type neurodegeneration. We discuss some novel approaches to modulating cerebral remodeling and preventing degeneration-coupled aberrant microvascular activity in chronic neurodegeneration.
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14
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Xu Y, Luo L, Chen J. Sulfamethoxazole induces brain capillaries toxicity in zebrafish by up-regulation of VEGF and chemokine signalling. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 238:113620. [PMID: 35561544 DOI: 10.1016/j.ecoenv.2022.113620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/27/2022] [Accepted: 05/07/2022] [Indexed: 06/15/2023]
Abstract
Sulfamethoxazole (SMX) is a widespread broad-spectrum bacteriostatic antibiotic. Its residual is frequently detected in the water and may therefore bioaccumulate in the brain of aquatic organisms via blood circulation. Brain capillaries toxicity is very important for brain development. However, little information is available in the literature to show the toxicity of SMX to brain development. To study the SMX's brain toxic effects and the related mechanisms, we exposed zebrafish embryos to SMX at different concentrations (0 ppm, 1 ppm, 25 ppm, 100 ppm and 250 ppm) and found that high concentration (250 ppm) of SMX would not only caused an abnormal in malformation rate, hatching rate, body length and survival rate of zebrafish embryos, but also lead to brain oedema. In addition, SMX also induced cerebral ischaemia, aggravates oxidative stress, and changes genes related to oxidative stress (sod1, cat, gpx4, and nrf2). Furthermore, ischaemia caused by SMX could promote ectopic angiogenesis in brain via activating the angiogenesis-related genes (vegfab, cxcr4a, cxcl12b) from 24 h to 53 h. Inhibition of VEGF signalling by SU5416, or inhibition of chemokine downstream PI3K signalling by LY294002, could rescue the brain capillaries toxicity and brain oedema induced by SMX. Our results provide new evidence for the brain toxicity of SMX and its residual danger in the environment and aquatic organisms.
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Affiliation(s)
- Yuhang Xu
- University of Chinese Academy of Sciences (Chongqing), Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Beibei, 400714 Chongqing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lingfei Luo
- University of Chinese Academy of Sciences (Chongqing), Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Beibei, 400714 Chongqing, China; Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, 400715 Chongqing, China
| | - Jingying Chen
- University of Chinese Academy of Sciences (Chongqing), Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Beibei, 400714 Chongqing, China.
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15
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Vogenstahl J, Parrilla M, Acker-Palmer A, Segarra M. Vascular Regulation of Developmental Neurogenesis. Front Cell Dev Biol 2022; 10:890852. [PMID: 35573692 PMCID: PMC9099230 DOI: 10.3389/fcell.2022.890852] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
Evolutionary studies indicate that the nervous system evolved prior to the vascular system, but the increasing complexity of organisms prompted the vascular system to emerge in order to meet the growing demand for oxygen and nutrient supply. In recent years, it has become apparent that the symbiotic communication between the nervous and the vascular systems goes beyond the exclusive covering of the demands on nutrients and oxygen carried by blood vessels. Indeed, this active interplay between both systems is crucial during the development of the central nervous system (CNS). Several neural-derived signals that initiate and regulate the vascularization of the CNS have been described, however less is known about the vascular signals that orchestrate the development of the CNS cytoarchitecture. Here, we focus on reviewing the effects of blood vessels in the process of neurogenesis during CNS development in vertebrates. In mammals, we describe the spatiotemporal features of vascular-driven neurogenesis in two brain regions that exhibit different neurogenic complexity in their germinal zone, the hindbrain and the forebrain.
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Affiliation(s)
- Johanna Vogenstahl
- Neuro and Vascular Guidance Group, Buchmann Institute for Molecular Life Sciences (BMLS) and Institute of Cell Biology and Neuroscience, Frankfurt am Main, Germany
- Max Planck Institute for Brain Research, Frankfurt am Main, Germany
| | - Marta Parrilla
- Neuro and Vascular Guidance Group, Buchmann Institute for Molecular Life Sciences (BMLS) and Institute of Cell Biology and Neuroscience, Frankfurt am Main, Germany
| | - Amparo Acker-Palmer
- Neuro and Vascular Guidance Group, Buchmann Institute for Molecular Life Sciences (BMLS) and Institute of Cell Biology and Neuroscience, Frankfurt am Main, Germany
- Max Planck Institute for Brain Research, Frankfurt am Main, Germany
- Cardio-Pulmonary Institute (CPI), Frankfurt am Main, Germany
- *Correspondence: Amparo Acker-Palmer, ; Marta Segarra,
| | - Marta Segarra
- Neuro and Vascular Guidance Group, Buchmann Institute for Molecular Life Sciences (BMLS) and Institute of Cell Biology and Neuroscience, Frankfurt am Main, Germany
- Cardio-Pulmonary Institute (CPI), Frankfurt am Main, Germany
- *Correspondence: Amparo Acker-Palmer, ; Marta Segarra,
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16
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Paquette E, Mumper N, Rodrigues A, Voulo M, Rich S, Roy NM. Hindbrain defects induced by Di-butyl phthalate (DBP) in developing zebrafish embryos. Neurotoxicol Teratol 2022; 92:107093. [PMID: 35477034 DOI: 10.1016/j.ntt.2022.107093] [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: 03/26/2022] [Revised: 04/17/2022] [Accepted: 04/21/2022] [Indexed: 11/28/2022]
Abstract
Di-butyl phthalate (DBP) is a globally used plasticizer found in alarmingly high concentrations in soil and water ecosystems. As phthalates are non-covalently bound to plastic polymers, phthalates easily leach into the aquatic environment. The effects of DBP on aquatic organisms is concerning, most notably, studies have focused on the endocrine-disrupting effects. However, reports on the developmental neurotoxicity of DBP are rare. Using the zebrafish vertebrate model system, we treated pre-gastrulation staged embryos with 2.5 μM DBP, a concentration environmentally noted. We find that general hindbrain structure and rhombomere patterning is disrupted at 72 h post fertilization (hpf). We investigated hindbrain specific neural patterning of cranial motor neurons and find defects in branchiomotor neuron patterning and migration. Furthermore, defects in r4 specific Mauthner neuron development were also noted. Thus, we conclude that DBP exposure during embryonic development induces defects to the hindbrain and concomitantly the neurons that are born and differentiate there.
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Affiliation(s)
- Evelyn Paquette
- Department of Biology, Sacred Heart University, Fairfield, CT, United States of America
| | - Naomi Mumper
- Department of Biology, Sacred Heart University, Fairfield, CT, United States of America
| | - Alissa Rodrigues
- Department of Biology, Sacred Heart University, Fairfield, CT, United States of America
| | - Morgan Voulo
- Department of Biology, Sacred Heart University, Fairfield, CT, United States of America
| | - Sierrah Rich
- Department of Biology, Sacred Heart University, Fairfield, CT, United States of America
| | - Nicole M Roy
- Department of Biology, Sacred Heart University, Fairfield, CT, United States of America.
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17
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Lange M, Ohnesorge N, Hoffmann D, Rocha SF, Benedito R, Siekmann AF. Zebrafish mutants in vegfab can affect endothelial cell proliferation without altering ERK phosphorylation and are phenocopied by loss of PI3K signaling. Dev Biol 2022; 486:26-43. [PMID: 35337795 DOI: 10.1016/j.ydbio.2022.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 12/23/2022]
Abstract
The formation of appropriately patterned blood vessel networks requires endothelial cell migration and proliferation. Signaling through the Vascular Endothelial Growth Factor A (VEGFA) pathway is instrumental in coordinating these processes. mRNA splicing generates short (diffusible) and long (extracellular matrix bound) Vegfa isoforms. The differences between these isoforms in controlling cellular functions are not understood. In zebrafish, vegfaa generates short and long isoforms, while vegfab only generates long isoforms. We found that mutations in vegfaa had an impact on endothelial cell (EC) migration and proliferation. Surprisingly, mutations in vegfab more strongly affected EC proliferation in distinct blood vessels, such as intersegmental blood vessels in the zebrafish trunk and central arteries in the head. Analysis of downstream signaling pathways revealed no change in MAPK (ERK) activation, while inhibiting PI3 kinase signaling phenocopied vegfab mutant phenotypes in affected blood vessels. Together, these results suggest that extracellular matrix bound Vegfa might act through PI3K signaling to control EC proliferation in a distinct set of blood vessels during angiogenesis.
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Affiliation(s)
- Martin Lange
- Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, D-48149, Muenster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Muenster, Germany
| | - Nils Ohnesorge
- Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, D-48149, Muenster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Muenster, Germany
| | - Dennis Hoffmann
- Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, D-48149, Muenster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Muenster, Germany
| | - Susana F Rocha
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, E28029, Spain
| | - Rui Benedito
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, E28029, Spain
| | - Arndt F Siekmann
- Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, D-48149, Muenster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Muenster, Germany; Department of Cell and Developmental Biology and Cardiovascular Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA.
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18
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VPS28 regulates brain vasculature by controlling neuronal VEGF trafficking through extracellular vesicle secretion. iScience 2022; 25:104042. [PMID: 35330682 PMCID: PMC8938284 DOI: 10.1016/j.isci.2022.104042] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 01/27/2022] [Accepted: 03/04/2022] [Indexed: 11/21/2022] Open
Abstract
Extracellular vesicles (EVs) participate in intercellular communication and contribute to the angiogenesis. However, the understanding of the mechanisms underlying EVs secretion by neurons and their action on the vascular system of the central nervous system (CNS) remain rudimentary. Here, we show that vacuolar protein sorting 28 (Vps28) is essential for the sprouting of brain central arteries (CtAs) and for the integrity of blood-brain barrier (BBB) in zebrafish. Disruption of neuron-enriched Vps28 significantly decreased EVs secretion by regulating the formation of intracellular multivesicular bodies (MVBs). EVs derived from zebrafish embryos or mouse cortical neurons partially rescued the brain vasculature defect and brain leakage. Further investigations revealed that neuronal EVs containing vascular endothelial growth factor A (VEGF-A) are key regulators in neurovascular communication. Our results indicate that Vps28 acts as an intercellular endosomal regulator mediating the secretion of neuronal EVs, which in turn communicate with endothelial cells to mediate angiogenesis through VEGF-A trafficking. Vps28 is highly expressed in neurons and involved in the secretion of neuronal EVs Vps28, as a subunit of ESCRT-1 complexes, participates in the formation of MVB Vps28 plays an important role in VEGFA transport and promotes neurovascular communication
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19
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Paulissen SM, Castranova DM, Krispin SM, Burns MC, Menéndez J, Torres-Vázquez J, Weinstein BM. Anatomy and development of the pectoral fin vascular network in the zebrafish. Development 2022; 149:274284. [PMID: 35132436 PMCID: PMC8959142 DOI: 10.1242/dev.199676] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 01/24/2022] [Indexed: 12/15/2022]
Abstract
The pectoral fins of teleost fish are analogous structures to human forelimbs, and the developmental mechanisms directing their initial growth and patterning are conserved between fish and tetrapods. The forelimb vasculature is crucial for limb function, and it appears to play important roles during development by promoting development of other limb structures, but the steps leading to its formation are poorly understood. In this study, we use high-resolution imaging to document the stepwise assembly of the zebrafish pectoral fin vasculature. We show that fin vascular network formation is a stereotyped, choreographed process that begins with the growth of an initial vascular loop around the pectoral fin. This loop connects to the dorsal aorta to initiate pectoral vascular circulation. Pectoral fin vascular development continues with concurrent formation of three elaborate vascular plexuses, one in the distal fin that develops into the fin-ray vasculature and two near the base of the fin in association with the developing fin musculature. Our findings detail a complex, yet highly choreographed, series of steps involved in the development of a complete, functional, organ-specific vascular network.
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Affiliation(s)
- Scott M Paulissen
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD 20892, USA
| | - Daniel M Castranova
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD 20892, USA
| | - Shlomo M Krispin
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD 20892, USA
| | - Margaret C Burns
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD 20892, USA
| | - Javier Menéndez
- Department of Cell Biology, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, NY 10016, USA
| | - Jesús Torres-Vázquez
- Department of Cell Biology, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, NY 10016, USA
| | - Brant M Weinstein
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD 20892, USA
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20
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Molecular and Cellular Mechanisms of Vascular Development in Zebrafish. Life (Basel) 2021; 11:life11101088. [PMID: 34685459 PMCID: PMC8539546 DOI: 10.3390/life11101088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 12/13/2022] Open
Abstract
The establishment of a functional cardiovascular system is crucial for the development of all vertebrates. Defects in the development of the cardiovascular system lead to cardiovascular diseases, which are among the top 10 causes of death worldwide. However, we are just beginning to understand which signaling pathways guide blood vessel growth in different tissues and organs. The advantages of the model organism zebrafish (Danio rerio) helped to identify novel cellular and molecular mechanisms of vascular growth. In this review we will discuss the current knowledge of vasculogenesis and angiogenesis in the zebrafish embryo. In particular, we describe the molecular mechanisms that contribute to the formation of blood vessels in different vascular beds within the embryo.
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21
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Chico TJA, Kugler EC. Cerebrovascular development: mechanisms and experimental approaches. Cell Mol Life Sci 2021; 78:4377-4398. [PMID: 33688979 PMCID: PMC8164590 DOI: 10.1007/s00018-021-03790-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 02/04/2021] [Accepted: 02/12/2021] [Indexed: 12/13/2022]
Abstract
The cerebral vasculature plays a central role in human health and disease and possesses several unique anatomic, functional and molecular characteristics. Despite their importance, the mechanisms that determine cerebrovascular development are less well studied than other vascular territories. This is in part due to limitations of existing models and techniques for visualisation and manipulation of the cerebral vasculature. In this review we summarise the experimental approaches used to study the cerebral vessels and the mechanisms that contribute to their development.
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Affiliation(s)
- Timothy J A Chico
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX, UK.
- The Bateson Centre, Firth Court, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sheffield, S1 3JD, UK.
| | - Elisabeth C Kugler
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX, UK.
- The Bateson Centre, Firth Court, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sheffield, S1 3JD, UK.
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22
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Taberner L, Bañón A, Alsina B. Sensory Neuroblast Quiescence Depends on Vascular Cytoneme Contacts and Sensory Neuronal Differentiation Requires Initiation of Blood Flow. Cell Rep 2021; 32:107903. [PMID: 32668260 DOI: 10.1016/j.celrep.2020.107903] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 04/02/2020] [Accepted: 06/23/2020] [Indexed: 02/08/2023] Open
Abstract
In many organs, stem cell function depends on communication with their niche partners. Cranial sensory neurons develop in close proximity to blood vessels; however, whether vasculature is an integral component of their niches is yet unknown. Here, two separate roles for vasculature in cranial sensory neurogenesis in zebrafish are uncovered. The first involves precise spatiotemporal endothelial-neuroblast cytoneme contacts and Dll4-Notch signaling to restrain neuroblast proliferation. The second, instead, requires blood flow to trigger a transcriptional response that modifies neuroblast metabolic status and induces sensory neuron differentiation. In contrast, no role of sensory neurogenesis in vascular development is found, suggesting unidirectional signaling from vasculature to sensory neuroblasts. Altogether, we demonstrate that the cranial vasculature constitutes a niche component of the sensory ganglia that regulates the pace of their growth and differentiation dynamics.
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Affiliation(s)
- Laura Taberner
- Developmental Biology Unit, Department of Experimental and Health Sciences, Universitat Pompeu Fabra-Parc de Recerca Biomèdica de Barcelona, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Aitor Bañón
- Developmental Biology Unit, Department of Experimental and Health Sciences, Universitat Pompeu Fabra-Parc de Recerca Biomèdica de Barcelona, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Berta Alsina
- Developmental Biology Unit, Department of Experimental and Health Sciences, Universitat Pompeu Fabra-Parc de Recerca Biomèdica de Barcelona, Dr. Aiguader 88, 08003 Barcelona, Spain.
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23
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Gupta A, Rarick KR, Ramchandran R. Established, New and Emerging Concepts in Brain Vascular Development. Front Physiol 2021; 12:636736. [PMID: 33643074 PMCID: PMC7907611 DOI: 10.3389/fphys.2021.636736] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/15/2021] [Indexed: 12/20/2022] Open
Abstract
In this review, we discuss the state of our knowledge as it relates to embryonic brain vascular patterning in model systems zebrafish and mouse. We focus on the origins of endothelial cell and the distinguishing features of brain endothelial cells compared to non-brain endothelial cells, which is revealed by single cell RNA-sequencing methodologies. We also discuss the cross talk between brain endothelial cells and neural stem cells, and their effect on each other. In terms of mechanisms, we focus exclusively on Wnt signaling and the recent developments associated with this signaling network in brain vascular patterning, and the benefits and challenges associated with strategies for targeting the brain vasculature. We end the review with a discussion on the emerging areas of meningeal lymphatics, endothelial cilia biology and novel cerebrovascular structures identified in vertebrates.
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Affiliation(s)
- Ankan Gupta
- Department of Pediatrics, Division of Neonatology, Developmental Vascular Biology Program, Children’s Research Institute (CRI), Medical College of Wisconsin, Milwaukee, WI, United States
| | - Kevin R. Rarick
- Department of Pediatrics, Division of Critical Care, Children’s Research Institute (CRI), Medical College of Wisconsin, Milwaukee, WI, United States
| | - Ramani Ramchandran
- Department of Pediatrics, Division of Neonatology, Developmental Vascular Biology Program, Children’s Research Institute (CRI), Medical College of Wisconsin, Milwaukee, WI, United States
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24
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Bahrami N, Childs SJ. Development of vascular regulation in the zebrafish embryo. Development 2020; 147:147/10/dev183061. [PMID: 32423977 DOI: 10.1242/dev.183061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 04/07/2020] [Indexed: 01/03/2023]
Abstract
The thin endothelial wall of a newly formed vessel is under enormous stress at the onset of blood flow, rapidly acquiring support from mural cells (pericytes and vascular smooth muscle cells; vSMCs) during development. Mural cells then develop vasoactivity (contraction and relaxation) but we have little information as to when this first develops or the extent to which pericytes and vSMCs contribute. For the first time, we determine the dynamic developmental acquisition of vasoactivity in vivo in the cerebral vasculature of zebrafish. We show that pericyte-covered vessels constrict in response to α1-adrenergic receptor agonists and dilate in response to nitric oxide donors at 4 days postfertilization (dpf) but have heterogeneous responses later, at 6 dpf. In contrast, vSMC-covered vessels constrict at 6 dpf, and dilate at both stages. Using genetic ablation, we demonstrate that vascular constriction and dilation is an active response. Our data suggest that both pericyte- and vSMC-covered vessels regulate their diameter in early development, and that their relative contributions change over developmental time.
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Affiliation(s)
- Nabila Bahrami
- Alberta Children's Hospital Research Institute and Department of Biochemistry and Molecular Biology, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
| | - Sarah J Childs
- Alberta Children's Hospital Research Institute and Department of Biochemistry and Molecular Biology, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
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25
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Jeong HJ, Jimenez Z, Mukhambetiyar K, Seo M, Choi JW, Park TE. Engineering Human Brain Organoids: From Basic Research to Tissue Regeneration. Tissue Eng Regen Med 2020; 17:747-757. [PMID: 32329023 DOI: 10.1007/s13770-020-00250-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/21/2020] [Accepted: 03/06/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Brain organoids are self-organized from human pluripotent stem cells and developed into various brain region following the developmental process of brain. Brain organoids provide promising approach for studying brain development process and neurological diseases and for tissue regeneration. METHODS In this review, we summarized the development of brain organoids technology, potential applications focusing on disease modeling for regeneration medicine, and multidisciplinary approaches to overcome current limitations of the technology. RESULTS Generations of brain organoids are categorized into two major classes by depending on the patterning method. In order to guide the differentiation into specific brain region, the extrinsic factors such as growth factors, small molecules, and biomaterials are actively studied. For better modelling of diseases with brain organoids and clinical application for tissue regeneration, improvement of the brain organoid maturation is one of the most important steps. CONCLUSION Brain organoids have potential to develop into an innovative platform for pharmacological studies and tissue engineering. However, they are not identical replicas of their in vivo counterpart and there are still a lot of limitations to move forward to clinical applications.
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Affiliation(s)
- Hye-Jin Jeong
- School of Life Sciences, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Zuly Jimenez
- School of Life Sciences, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Karakoz Mukhambetiyar
- School of Life Sciences, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Minwook Seo
- School of Life Sciences, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Jeong-Won Choi
- School of Life Sciences, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Tae-Eun Park
- School of Life Sciences, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
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26
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Wu TS, Lin YT, Huang YT, Yu FY, Liu BH. Ochratoxin A triggered intracerebral hemorrhage in embryonic zebrafish: Involvement of microRNA-731 and prolactin receptor. CHEMOSPHERE 2020; 242:125143. [PMID: 31675585 DOI: 10.1016/j.chemosphere.2019.125143] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 10/15/2019] [Accepted: 10/16/2019] [Indexed: 06/10/2023]
Abstract
Ochratoxin A (OTA), a mycotoxin widely found in foodstuffs, reportedly damages multiple brain regions in developing rodents, but the corresponding mechanisms have not been elucidated. In this study, zebrafish embryos at 6 h post fertilization (hpf) were exposed to various concentrations of OTA and the phenomenon associated with intracerebral hemorrhage was observed at 72 hpf. Exposure of embryos to OTA significantly increased their hemorrhagic rate in a dose-dependent manner. Large numbers of extravagated erythrocytes were observed in the midbrain/hindbrain areas of Tg(fli-1a:EGFP; gata1:DsRed) embryos following exposure to OTA. OTA also disrupted the vascular patterning, especially the arch-shaped central arteries (CtAs), in treated embryos. Histological analysis revealed a cavity-like pattern in their hindbrain ventricles, implying the possibility of cerebral edema. OTA-induced intracerebral hemorrhage and CtA vessel defects were partially reversed by the presence of miR-731 antagomir or the overexpression of prolactin receptor a (prlra); prlra is a downstream target of miR-731. These results suggest that exposure to OTA has a negative effect on cerebral vasculature development by interfering with the miR-731/PRLR axis in zebrafish.
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Affiliation(s)
- Ting-Shuan Wu
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Ting Lin
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ying-Tzu Huang
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Feng-Yih Yu
- Department of Biomedical Sciences, Chung Shan Medical University, Taiwan; Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan.
| | - Biing-Hui Liu
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan.
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27
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Rahmat S, Gilland E. Hindbrain neurovascular anatomy of adult goldfish (Carassius auratus). J Anat 2019; 235:783-793. [PMID: 31218682 DOI: 10.1111/joa.13026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2019] [Indexed: 11/28/2022] Open
Abstract
The goldfish hindbrain develops from a segmented (rhombomeric) neuroepithelial scaffold, similar to other vertebrates. Motor, reticular and other neuronal groups develop in specific segmental locations within this rhombomeric framework. Teleosts are unique in possessing a segmental series of unpaired, midline central arteries that extend from the basilar artery and penetrate the pial midline of each hindbrain rhombomere (r). This study demonstrates that the rhombencephalic arterial supply of the brainstem forms in relation to the neural segments they supply. Midline central arteries penetrate the pial floor plate and branch within the neuroepithelium near the ventricular surface to form vascular trees that extend back towards the pial surface. This intramural branching pattern has not been described in any other vertebrate, with blood flow in a ventriculo-pial direction, vastly different than the pial-ventricular blood flow observed in most other vertebrates. Each central arterial stem penetrates the pial midline and ascends through the floor plate, giving off short transverse paramedian branches that extend a short distance into the adjoining basal plate to supply ventromedial areas of the brainstem, including direct supply of reticulospinal neurons. Robust r3 and r8 central arteries are significantly larger and form a more interconnected network than any of the remaining hindbrain vascular stems. The r3 arterial stem has extensive vascular branching, including specific vessels that supply the cerebellum, trigeminal motor nucleus located in r2/3 and facial motoneurons found in r6/7. Results suggest that some blood vessels may be predetermined to supply specific neuronal populations, even traveling outside of their original neurovascular territories in order to supply migrated neurons.
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Affiliation(s)
- Sulman Rahmat
- Department of Anatomy, Howard University College of Medicine, Washington, DC, USA
| | - Edwin Gilland
- Department of Anatomy, Howard University College of Medicine, Washington, DC, USA
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28
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Cho HJ, Lee JG, Kim JH, Kim SY, Huh YH, Kim HJ, Lee KS, Yu K, Lee JS. Vascular defects of DYRK1A knockouts are ameliorated by modulating calcium signaling in zebrafish. Dis Model Mech 2019; 12:dmm.037044. [PMID: 31043432 PMCID: PMC6550036 DOI: 10.1242/dmm.037044] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 04/11/2019] [Indexed: 01/05/2023] Open
Abstract
DYRK1A is a major causative gene in Down syndrome (DS). Reduced incidence of solid tumors such as neuroblastoma in DS patients and increased vascular anomalies in DS fetuses suggest a potential role of DYRK1A in angiogenic processes, but in vivo evidence is still scarce. Here, we used zebrafish dyrk1aa mutant embryos to understand DYRK1A function in cerebral vasculature formation. Zebrafish dyrk1aa mutants exhibited cerebral hemorrhage and defects in angiogenesis of central arteries in the developing hindbrain. Such phenotypes were rescued by wild-type dyrk1aa mRNA, but not by a kinase-dead form, indicating the importance of DYRK1A kinase activity. Chemical screening using a bioactive small molecule library identified a calcium chelator, EGTA, as one of the hits that most robustly rescued the hemorrhage. Vascular defects of mutants were also rescued by independent modulation of calcium signaling by FK506. Furthermore, the transcriptomic analyses supported the alterations of calcium signaling networks in dyrk1aa mutants. Together, our results suggest that DYRK1A plays an essential role in angiogenesis and in maintenance of the developing cerebral vasculature via regulation of calcium signaling, which may have therapeutic potential for DYRK1A-related vascular diseases. Summary: The roles of DYRK1A in angiogenesis and maintenance of the developing cerebral vasculature mediated by calcium signaling were revealed using zebrafish dyrk1aa knockout mutants.
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Affiliation(s)
- Hyun-Ju Cho
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Dementia DTC R&D Convergence Program, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Jae-Geun Lee
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jong-Hwan Kim
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Genome Editing Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Seon-Young Kim
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Genome Editing Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Yang Hoon Huh
- Electron Microscopy Research Center, Korea Basic Science Institute, 162 Yeongudanji-ro, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do, 28119, Republic of Korea
| | - Hyo-Jeong Kim
- Electron Microscopy Research Center, Korea Basic Science Institute, 162 Yeongudanji-ro, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do, 28119, Republic of Korea
| | - Kyu-Sun Lee
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Hazards Monitoring BNT Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Kweon Yu
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.,Dementia DTC R&D Convergence Program, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Jeong-Soo Lee
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea .,Dementia DTC R&D Convergence Program, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
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29
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Jackson S, Meeks C, Vézina A, Robey RW, Tanner K, Gottesman MM. Model systems for studying the blood-brain barrier: Applications and challenges. Biomaterials 2019; 214:119217. [PMID: 31146177 DOI: 10.1016/j.biomaterials.2019.05.028] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 05/13/2019] [Accepted: 05/16/2019] [Indexed: 12/21/2022]
Abstract
The blood-brain barrier (BBB) poses a serious impediment to the delivery of effective therapies to the central nervous system (CNS). Over time, various model systems have been crafted and used to evaluate the complexities of the BBB, which includes an impermeable physical barrier and a series of energy-dependent efflux pumps. Models of the BBB have mainly sought to assess changes in endothelial cell permeability, the role of ATP-dependent efflux transporters in drug disposition, and alterations in communication between BBB cells and the microenvironment. In the context of disease, various animal models have been utilized to examine real time BBB drug permeability, CNS dynamic changes, and overall treatment response. In this review, we outline the use of these in vitro and in vivo blood-brain barrier model systems to study normal physiology and diseased states. These current models each have their own advantages and disadvantages for studying the response of biologic processes to physiological and pathological conditions. Additional models are needed to mimic more closely the dynamic quality of the BBB, with the goal focused on potential clinical applications.
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Affiliation(s)
- Sadhana Jackson
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, United States.
| | - Caitlin Meeks
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, United States
| | - Amélie Vézina
- Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, United States
| | - Robert W Robey
- Multidrug Resistance Section, Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, United States
| | - Kandice Tanner
- Tissue Morphodynamics Unit, Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, United States
| | - Michael M Gottesman
- Multidrug Resistance Section, Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, United States
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30
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Quiñonez-Silvero C, Hübner K, Herzog W. Development of the brain vasculature and the blood-brain barrier in zebrafish. Dev Biol 2019; 457:181-190. [PMID: 30862465 DOI: 10.1016/j.ydbio.2019.03.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/06/2019] [Accepted: 03/08/2019] [Indexed: 12/13/2022]
Abstract
To ensure tissue homeostasis the brain needs to be protected from blood-derived fluctuations or pathogens that could affect its function. Therefore, the brain capillaries develop tissue-specific properties to form a selective blood-brain barrier (BBB), allowing the passage of essential molecules to the brain and blocking the penetration of potentially harmful compounds or cells. Previous studies reported the presence of this barrier in zebrafish. The intrinsic features of the zebrafish embryos and larvae in combination with optical techniques, make them suitable for the study of barrier establishment and maturation. In this review, we discuss the most recent contributions to the development and formation of a functional zebrafish BBB. Moreover, we compare the molecular and cellular characteristic of the zebrafish and the mammalian BBB.
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Affiliation(s)
- Claudia Quiñonez-Silvero
- University of Muenster, Muenster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Germany
| | - Kathleen Hübner
- University of Muenster, Muenster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Germany
| | - Wiebke Herzog
- University of Muenster, Muenster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Germany; Max Planck Institute for Molecular Biomedicine, Muenster, Germany.
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31
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Eisa-Beygi S, Benslimane FM, El-Rass S, Prabhudesai S, Abdelrasool MKA, Simpson PM, Yalcin HC, Burrows PE, Ramchandran R. Characterization of Endothelial Cilia Distribution During Cerebral-Vascular Development in Zebrafish ( Danio rerio). Arterioscler Thromb Vasc Biol 2018; 38:2806-2818. [PMID: 30571172 PMCID: PMC6309420 DOI: 10.1161/atvbaha.118.311231] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Objective- Endothelial cells (ECs) sense and respond to flow-induced mechanical stress, in part, via microtubule-based projections called primary cilia. However, many critical steps during vascular morphogenesis occur independent of flow. The involvement of cilia in regulating these stages of cranial vascular morphogenesis is poorly understood because cilia have not been visualized in primary head vessels. The objective of this study was to investigate involvement of cilia in regulating the early stages of cranial vascular morphogenesis. Approach and Results- Using high-resolution imaging of the Tg(kdrl:mCherry-CAAX) y171 ;(bactin::Arl13b:GFP) zebrafish line, we showed that cilia are enriched in the earliest formed cranial vessels that assemble via vasculogenesis and in angiogenic hindbrain capillaries. Cilia were more prevalent around the boundaries of putative intravascular spaces in primary and angiogenic vessels. Loss of cardiac contractility and blood flow, because of knockdown of cardiac troponin T type 2a ( tnnt2a) expression, did not affect the distribution of cilia in primary head vasculature. In later stages of development, cilia were detected in retinal vasculature, areas of high curvature, vessel bifurcation points, and during vessel anastomosis. Loss of genes crucial for cilia biogenesis ( ift172 and ift81) induced intracerebral hemorrhages in an EC-autonomous manner. Exposure to high shear stress induced premature cilia disassembly in brain ECs and was associated with intracerebral hemorrhages. Conclusions- Our study suggests a functional role for cilia in brain ECs, which is associated with the emergence and remodeling of the primary cranial vasculature. This cilia function is flow-independent, and cilia in ECs are required for cerebral-vascular stability.
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Affiliation(s)
- Shahram Eisa-Beygi
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA 53226
| | | | - Suzan El-Rass
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | | | | | | | | | - Patricia E. Burrows
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA 53226
| | - Ramani Ramchandran
- Department of Pediatrics, Division of Neonatology
- Department of Obstetrics and Gynecology, Medical College of Wisconsin, Milwaukee WI 53226
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32
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Hübner K, Cabochette P, Diéguez-Hurtado R, Wiesner C, Wakayama Y, Grassme KS, Hubert M, Guenther S, Belting HG, Affolter M, Adams RH, Vanhollebeke B, Herzog W. Wnt/β-catenin signaling regulates VE-cadherin-mediated anastomosis of brain capillaries by counteracting S1pr1 signaling. Nat Commun 2018; 9:4860. [PMID: 30451830 PMCID: PMC6242933 DOI: 10.1038/s41467-018-07302-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 10/15/2018] [Indexed: 02/08/2023] Open
Abstract
Canonical Wnt signaling is crucial for vascularization of the central nervous system and blood-brain barrier (BBB) formation. BBB formation and modulation are not only important for development, but also relevant for vascular and neurodegenerative diseases. However, there is little understanding of how Wnt signaling contributes to brain angiogenesis and BBB formation. Here we show, using high resolution in vivo imaging and temporal and spatial manipulation of Wnt signaling, different requirements for Wnt signaling during brain angiogenesis and BBB formation. In the absence of Wnt signaling, premature Sphingosine-1-phosphate receptor (S1pr) signaling reduces VE-cadherin and Esama at cell-cell junctions. We suggest that Wnt signaling suppresses S1pr signaling during angiogenesis to enable the dynamic junction formation during anastomosis, whereas later S1pr signaling regulates BBB maturation and VE-cadherin stabilization. Our data provides a link between brain angiogenesis and BBB formation and identifies Wnt signaling as coordinator of the timing and as regulator of anastomosis.
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Affiliation(s)
- Kathleen Hübner
- University of Muenster, Schlossplatz 2, 48149, Muenster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Waldeyerstrasse 15, 48149, Muenster, Germany
| | - Pauline Cabochette
- Université libre de Bruxelles, Rue Prof. Jeener et Brachet 12, 6041, Gosselies, Belgium
| | - Rodrigo Diéguez-Hurtado
- Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Waldeyerstrasse 15, 48149, Muenster, Germany
- Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, 48149, Muenster, Germany
| | - Cora Wiesner
- Biozentrum der Universität Basel, Klingelbergstrasse 70, 4056, Basel, Switzerland
| | - Yuki Wakayama
- University of Muenster, Schlossplatz 2, 48149, Muenster, Germany
| | | | - Marvin Hubert
- University of Muenster, Schlossplatz 2, 48149, Muenster, Germany
| | - Stefan Guenther
- Max Planck Institute for Heart and Lung Research, ECCPS Bioinformatics and Deep Sequencing Platform, Ludwigstrasse 43, 61231, Bad Nauheim, Germany
| | - Heinz-Georg Belting
- Biozentrum der Universität Basel, Klingelbergstrasse 70, 4056, Basel, Switzerland
| | - Markus Affolter
- Biozentrum der Universität Basel, Klingelbergstrasse 70, 4056, Basel, Switzerland
| | - Ralf H Adams
- Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Waldeyerstrasse 15, 48149, Muenster, Germany
- Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, 48149, Muenster, Germany
| | - Benoit Vanhollebeke
- Université libre de Bruxelles, Rue Prof. Jeener et Brachet 12, 6041, Gosselies, Belgium
- Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Avenue Pasteur 6, 1300, Wavre, Belgium
| | - Wiebke Herzog
- University of Muenster, Schlossplatz 2, 48149, Muenster, Germany.
- Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Muenster, Waldeyerstrasse 15, 48149, Muenster, Germany.
- Max Planck Institute for Molecular Biomedicine, Roentgenstrasse 20, 48149, Muenster, Germany.
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33
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Paredes I, Himmels P, Ruiz de Almodóvar C. Neurovascular Communication during CNS Development. Dev Cell 2018; 45:10-32. [PMID: 29634931 DOI: 10.1016/j.devcel.2018.01.023] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/22/2017] [Accepted: 01/08/2018] [Indexed: 12/11/2022]
Abstract
A precise communication between the nervous and the vascular systems is crucial for proper formation and function of the central nervous system (CNS). Interestingly, this communication does not only occur by neural cells regulating the growth and properties of the vasculature, but new studies show that blood vessels actively control different neurodevelopmental processes. Here, we review the current knowledge on how neurons in particular influence growing blood vessels during CNS development and on how vessels participate in shaping the neural compartment. We also review the identified molecular mechanisms of this bidirectional communication.
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Affiliation(s)
- Isidora Paredes
- Biochemistry Center, Heidelberg University, 69120 Heidelberg, Germany; Interdisciplinary Center for Neurosciences, Heidelberg University, 69120 Heidelberg, Germany
| | - Patricia Himmels
- Biochemistry Center, Heidelberg University, 69120 Heidelberg, Germany; Interdisciplinary Center for Neurosciences, Heidelberg University, 69120 Heidelberg, Germany
| | - Carmen Ruiz de Almodóvar
- Biochemistry Center, Heidelberg University, 69120 Heidelberg, Germany; Interdisciplinary Center for Neurosciences, Heidelberg University, 69120 Heidelberg, Germany.
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34
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Madelaine R, Sloan SA, Huber N, Notwell JH, Leung LC, Skariah G, Halluin C, Paşca SP, Bejerano G, Krasnow MA, Barres BA, Mourrain P. MicroRNA-9 Couples Brain Neurogenesis and Angiogenesis. Cell Rep 2018; 20:1533-1542. [PMID: 28813666 DOI: 10.1016/j.celrep.2017.07.051] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 06/30/2017] [Accepted: 07/19/2017] [Indexed: 12/22/2022] Open
Abstract
In the developing brain, neurons expressing VEGF-A and blood vessels grow in close apposition, but many of the molecular pathways regulating neuronal VEGF-A and neurovascular system development remain to be deciphered. Here, we show that miR-9 links neurogenesis and angiogenesis through the formation of neurons expressing VEGF-A. We found that miR-9 directly targets the transcription factors TLX and ONECUTs to regulate VEGF-A expression. miR-9 inhibition leads to increased TLX and ONECUT expression, resulting in VEGF-A overexpression. This untimely increase of neuronal VEGF-A signal leads to the thickening of blood vessels at the expense of the normal formation of the neurovascular network in the brain and retina. Thus, this conserved transcriptional cascade is critical for proper brain development in vertebrates. Because of this dual role on neural stem cell proliferation and angiogenesis, miR-9 and its downstream targets are promising factors for cellular regenerative therapy following stroke and for brain tumor treatment.
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Affiliation(s)
- Romain Madelaine
- Stanford Center for Sleep Sciences and Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Steven A Sloan
- Department of Neurobiology, Stanford University, Stanford, CA 94305, USA
| | - Nina Huber
- Stanford Center for Sleep Sciences and Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - James H Notwell
- Department of Computer Science, Stanford University, Stanford, CA 94305, USA
| | - Louis C Leung
- Stanford Center for Sleep Sciences and Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Gemini Skariah
- Stanford Center for Sleep Sciences and Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Caroline Halluin
- Stanford Center for Sleep Sciences and Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Sergiu P Paşca
- Stanford Center for Sleep Sciences and Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Gill Bejerano
- Department of Computer Science, Stanford University, Stanford, CA 94305, USA; Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA
| | - Mark A Krasnow
- HHMI and Department of Biochemistry, Stanford University, Stanford, CA 94305, USA
| | - Ben A Barres
- Department of Neurobiology, Stanford University, Stanford, CA 94305, USA
| | - Philippe Mourrain
- Stanford Center for Sleep Sciences and Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA; INSERM 1024, École Normale Supérieure, Paris 75005, France.
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35
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Taberner L, Bañón A, Alsina B. Anatomical map of the cranial vasculature and sensory ganglia. J Anat 2017; 232:431-439. [PMID: 29235648 DOI: 10.1111/joa.12762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2017] [Indexed: 12/29/2022] Open
Abstract
There is growing evidence of a direct influence of vasculature on the development of neurons in the brain. The development of the cranial vasculature has been well described in zebrafish but its anatomical relationship with the adjacent developing sensory ganglia has not been addressed. Here, by 3D imaging of fluorescently labelled blood vessels and sensory ganglia, we describe for the first time the spatial organization of the cranial vasculature in relation to the cranial ganglia during zebrafish development. We show that from 24 h post-fertilization (hpf) onwards, the statoacoustic ganglion (SAG) develops in direct contact with two main blood vessels, the primordial hindbrain channel and the lateral dorsal aortae (LDA). At 48 hpf, the LDA is displaced medially, losing direct contact with the SAG. The relationship of the other cranial ganglia with the vasculature is evident for the medial lateral line ganglion and for the vagal ganglia that grow along the primary head sinus (PHS). We also observed that the innervation of the anterior macula runs over the PHS vessel. Our spatiotemporal anatomical map of the cranial ganglia and the head vasculature indicates physical interactions between both systems and suggests a possible functional interaction during development.
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Affiliation(s)
- Laura Taberner
- Laboratory of Developmental Biology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra-PRBB, 08003, Barcelona, Spain
| | - Aitor Bañón
- Laboratory of Developmental Biology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra-PRBB, 08003, Barcelona, Spain
| | - Berta Alsina
- Laboratory of Developmental Biology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra-PRBB, 08003, Barcelona, Spain
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36
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Jin D, Zhu D, Fang Y, Chen Y, Yu G, Pan W, Liu D, Li F, Zhong TP. Vegfa signaling regulates diverse artery/vein formation in vertebrate vasculatures. J Genet Genomics 2017; 44:483-492. [DOI: 10.1016/j.jgg.2017.07.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 06/11/2017] [Accepted: 07/17/2017] [Indexed: 12/20/2022]
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Hasan SS, Tsaryk R, Lange M, Wisniewski L, Moore JC, Lawson ND, Wojciechowska K, Schnittler H, Siekmann AF. Endothelial Notch signalling limits angiogenesis via control of artery formation. Nat Cell Biol 2017; 19:928-940. [PMID: 28714969 PMCID: PMC5534340 DOI: 10.1038/ncb3574] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 06/15/2017] [Indexed: 01/01/2023]
Abstract
Angiogenic sprouting needs to be tightly controlled. It has been suggested that the Notch ligand dll4 expressed in leading tip cells restricts angiogenesis by activating Notch signalling in trailing stalk cells. Here, we show using live imaging in zebrafish that activation of Notch signalling is rather required in tip cells. Notch activation initially triggers expression of the chemokine receptor cxcr4a. This allows for proper tip cell migration and connection to the pre-existing arterial circulation, ultimately establishing functional arterial-venous blood flow patterns. Subsequently, Notch signalling reduces cxcr4a expression, thereby preventing excessive blood vessel growth. Finally, we find that Notch signalling is dispensable for limiting blood vessel growth during venous plexus formation that does not generate arteries. Together, these findings link the role of Notch signalling in limiting angiogenesis to its role during artery formation and provide a framework for our understanding of the mechanisms underlying blood vessel network expansion and maturation.
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MESH Headings
- Animals
- Animals, Genetically Modified
- Arteries/cytology
- Arteries/metabolism
- Cell Movement
- Cells, Cultured
- Endothelial Cells/metabolism
- Gene Expression Regulation, Developmental
- Genotype
- Homeodomain Proteins/genetics
- Homeodomain Proteins/metabolism
- Human Umbilical Vein Endothelial Cells/metabolism
- Humans
- Intracellular Signaling Peptides and Proteins/genetics
- Intracellular Signaling Peptides and Proteins/metabolism
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Microscopy, Fluorescence
- Microscopy, Video
- Neovascularization, Physiologic
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Phenotype
- Receptor, Notch1/genetics
- Receptor, Notch1/metabolism
- Receptors, CXCR4/genetics
- Receptors, CXCR4/metabolism
- Signal Transduction
- Time Factors
- Time-Lapse Imaging
- Transfection
- Zebrafish/genetics
- Zebrafish/metabolism
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
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Affiliation(s)
- Sana S. Hasan
- Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, D-48149 Münster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003 – CiM), University of Muenster, Muenster, Germany
| | - Roman Tsaryk
- Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, D-48149 Münster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003 – CiM), University of Muenster, Muenster, Germany
| | - Martin Lange
- Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, D-48149 Münster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003 – CiM), University of Muenster, Muenster, Germany
| | - Laura Wisniewski
- Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, D-48149 Münster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003 – CiM), University of Muenster, Muenster, Germany
| | - John C. Moore
- Department of Molecular, Cell, and Cancer Biology, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA 01605
| | - Nathan D. Lawson
- Department of Molecular, Cell, and Cancer Biology, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA 01605
| | | | - Hans Schnittler
- Cells-in-Motion Cluster of Excellence (EXC 1003 – CiM), University of Muenster, Muenster, Germany
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Vesaliusweg 2-4, 48149 Münster, Germany
| | - Arndt F. Siekmann
- Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, D-48149 Münster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003 – CiM), University of Muenster, Muenster, Germany
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38
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In Vivo Analysis of the Neurovascular Niche in the Developing Xenopus Brain. eNeuro 2017; 4:eN-NWR-0030-17. [PMID: 28795134 PMCID: PMC5548361 DOI: 10.1523/eneuro.0030-17.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 06/27/2017] [Accepted: 06/28/2017] [Indexed: 12/17/2022] Open
Abstract
The neurovascular niche is a specialized microenvironment formed by the interactions between neural progenitor cells (NPCs) and the vasculature. While it is thought to regulate adult neurogenesis by signaling through vascular-derived soluble cues or contacted-mediated cues, less is known about the neurovascular niche during development. In Xenopus laevis tadpole brain, NPCs line the ventricle and extend radial processes tipped with endfeet to the vascularized pial surface. Using in vivo labeling and time-lapse imaging in tadpoles, we find that intracardial injection of fluorescent tracers rapidly labels Sox2/3-expressing NPCs and that vascular-circulating molecules are endocytosed by NPC endfeet. Confocal imaging indicates that about half of the endfeet appear to appose the vasculature, and time-lapse analysis of NPC proliferation and endfeet-vascular interactions suggest that proliferative activity does not correlate with stable vascular apposition. Together, these findings characterize the neurovascular niche in the developing brain and suggest that, while signaling to NPCs may occur through vascular-derived soluble cues, stable contact between NPC endfeet and the vasculature is not required for developmental neurogenesis.
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39
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Wang H, Luo L, Yang D. Loss of Gspt1l disturbs the patterning of the brain central arteries in zebrafish. Biochem Biophys Res Commun 2017; 486:156-162. [DOI: 10.1016/j.bbrc.2017.03.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 03/07/2017] [Indexed: 12/12/2022]
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40
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Umans RA, Henson HE, Mu F, Parupalli C, Ju B, Peters JL, Lanham KA, Plavicki JS, Taylor MR. CNS angiogenesis and barriergenesis occur simultaneously. Dev Biol 2017; 425:101-108. [PMID: 28365243 DOI: 10.1016/j.ydbio.2017.03.017] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 02/24/2017] [Accepted: 03/18/2017] [Indexed: 01/04/2023]
Abstract
The blood-brain barrier (BBB) plays a vital role in the central nervous system (CNS). A comprehensive understanding of BBB development has been hampered by difficulties in observing the differentiation of brain endothelial cells (BECs) in real-time. Here, we generated two transgenic zebrafish line, Tg(glut1b:mCherry) and Tg(plvap:EGFP), to serve as in vivo reporters of BBB development. We showed that barriergenesis (i.e. the induction of BEC differentiation) occurs immediately as endothelial tips cells migrate into the brain parenchyma. Using the Tg(glut1b:mCherry) transgenic line, we performed a genetic screen and identified a zebrafish mutant with a nonsense mutation in gpr124, a gene known to play a role in CNS angiogenesis and BBB development. We also showed that our transgenic plvap:EGFP line, a reporter of immature brain endothelium, is initially expressed in newly formed brain endothelial cells, but subsides during BBB maturation. Our results demonstrate the ability to visualize the in vivo differentiation of brain endothelial cells into the BBB phenotype and establish that CNS angiogenesis and barriergenesis occur simultaneously.
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Affiliation(s)
- Robyn A Umans
- Department of Chemical Biology & Therapeutics, St. Jude Children's Research Hospital, Memphis, TN, USA; Integrated Program in Biomedical Sciences, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Hannah E Henson
- Department of Chemical Biology & Therapeutics, St. Jude Children's Research Hospital, Memphis, TN, USA; Integrated Program in Biomedical Sciences, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Fangzhou Mu
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI, USA
| | - Chaithanyarani Parupalli
- Department of Chemical Biology & Therapeutics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Bensheng Ju
- Department of Chemical Biology & Therapeutics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jennifer L Peters
- Cell and Tissue Imaging, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Kevin A Lanham
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI, USA
| | - Jessica S Plavicki
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI, USA
| | - Michael R Taylor
- Department of Chemical Biology & Therapeutics, St. Jude Children's Research Hospital, Memphis, TN, USA; Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI, USA.
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41
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Ulrich F, Carretero-Ortega J, Menéndez J, Narvaez C, Sun B, Lancaster E, Pershad V, Trzaska S, Véliz E, Kamei M, Prendergast A, Kidd KR, Shaw KM, Castranova DA, Pham VN, Lo BD, Martin BL, Raible DW, Weinstein BM, Torres-Vázquez J. Reck enables cerebrovascular development by promoting canonical Wnt signaling. Development 2015; 143:147-59. [PMID: 26657775 DOI: 10.1242/dev.123059] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 11/25/2015] [Indexed: 01/03/2023]
Abstract
The cerebral vasculature provides the massive blood supply that the brain needs to grow and survive. By acquiring distinctive cellular and molecular characteristics it becomes the blood-brain barrier (BBB), a selectively permeable and protective interface between the brain and the peripheral circulation that maintains the extracellular milieu permissive for neuronal activity. Accordingly, there is great interest in uncovering the mechanisms that modulate the formation and differentiation of the brain vasculature. By performing a forward genetic screen in zebrafish we isolated no food for thought (nft (y72)), a recessive late-lethal mutant that lacks most of the intracerebral central arteries (CtAs), but not other brain blood vessels. We found that the cerebral vascularization deficit of nft (y72) mutants is caused by an inactivating lesion in reversion-inducing cysteine-rich protein with Kazal motifs [reck; also known as suppressor of tumorigenicity 15 protein (ST15)], which encodes a membrane-anchored tumor suppressor glycoprotein. Our findings highlight Reck as a novel and pivotal modulator of the canonical Wnt signaling pathway that acts in endothelial cells to enable intracerebral vascularization and proper expression of molecular markers associated with BBB formation. Additional studies with cultured endothelial cells suggest that, in other contexts, Reck impacts vascular biology via the vascular endothelial growth factor (VEGF) cascade. Together, our findings have broad implications for both vascular and cancer biology.
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Affiliation(s)
- Florian Ulrich
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Jorge Carretero-Ortega
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Javier Menéndez
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Carlos Narvaez
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Belinda Sun
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Eva Lancaster
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Valerie Pershad
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Sean Trzaska
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Evelyn Véliz
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Makoto Kamei
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Andrew Prendergast
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Kameha R Kidd
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kenna M Shaw
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Daniel A Castranova
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Van N Pham
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brigid D Lo
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - David W Raible
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Brant M Weinstein
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jesús Torres-Vázquez
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
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42
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Hirota S, Clements TP, Tang LK, Morales JE, Lee HS, Oh SP, Rivera GM, Wagner DS, McCarty JH. Neuropilin 1 balances β8 integrin-activated TGFβ signaling to control sprouting angiogenesis in the brain. Development 2015; 142:4363-73. [PMID: 26586223 PMCID: PMC4689212 DOI: 10.1242/dev.113746] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 11/06/2015] [Indexed: 12/31/2022]
Abstract
Angiogenesis in the developing central nervous system (CNS) is regulated by neuroepithelial cells, although the genes and pathways that couple these cells to blood vessels remain largely uncharacterized. Here, we have used biochemical, cell biological and molecular genetic approaches to demonstrate that β8 integrin (Itgb8) and neuropilin 1 (Nrp1) cooperatively promote CNS angiogenesis by mediating adhesion and signaling events between neuroepithelial cells and vascular endothelial cells. β8 integrin in the neuroepithelium promotes the activation of extracellular matrix (ECM)-bound latent transforming growth factor β (TGFβ) ligands and stimulates TGFβ receptor signaling in endothelial cells. Nrp1 in endothelial cells suppresses TGFβ activation and signaling by forming intercellular protein complexes with β8 integrin. Cell type-specific ablation of β8 integrin, Nrp1, or canonical TGFβ receptors results in pathological angiogenesis caused by defective neuroepithelial cell-endothelial cell adhesion and imbalances in canonical TGFβ signaling. Collectively, these data identify a paracrine signaling pathway that links the neuroepithelium to blood vessels and precisely balances TGFβ signaling during cerebral angiogenesis. Summary: Neuropilin 1 and β8 integrin cooperatively promote cerebral angiogenesis by mediating adhesion and signaling events between neuroepithelial cells and vascular endothelial cells in the mouse brain.
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Affiliation(s)
- Shinya Hirota
- Department of Neurosurgery, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | - Leung K Tang
- College of Veterinary Medicine, Texas A&M University, College Station, TX 77843, USA
| | - John E Morales
- Department of Neurosurgery, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hye Shin Lee
- Department of Neurosurgery, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - S Paul Oh
- Department of Physiology and Functional Genomics, University of Florida, Gainseville, FL 32610, USA
| | - Gonzalo M Rivera
- College of Veterinary Medicine, Texas A&M University, College Station, TX 77843, USA
| | - Daniel S Wagner
- Department of Biosciences, Rice University, Houston, TX 77005, USA
| | - Joseph H McCarty
- Department of Neurosurgery, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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43
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Abstract
The developing central nervous system (CNS) is vascularised through the angiogenic invasion of blood vessels from a perineural vascular plexus, followed by continued sprouting and remodelling until a hierarchical vascular network is formed. Remarkably, vascularisation occurs without perturbing the intricate architecture of the neurogenic niches or the emerging neural networks. We discuss the mouse hindbrain, forebrain and retina as widely used models to study developmental angiogenesis in the mammalian CNS and provide an overview of key cellular and molecular mechanisms regulating the vascularisation of these organs. CNS vascularisation is initiated during embryonic development. CNS vascularisation is studied in the mouse forebrain, hindbrain and retina models. Neuroglial cells interact with endothelial cells to promote angiogenesis. Neuroglial cells produce growth factors and matrix cues to pattern vessels.
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44
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Fantin A, Lampropoulou A, Gestri G, Raimondi C, Senatore V, Zachary I, Ruhrberg C. NRP1 Regulates CDC42 Activation to Promote Filopodia Formation in Endothelial Tip Cells. Cell Rep 2015; 11:1577-90. [PMID: 26051942 PMCID: PMC4528263 DOI: 10.1016/j.celrep.2015.05.018] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 03/23/2015] [Accepted: 05/11/2015] [Indexed: 11/15/2022] Open
Abstract
Sprouting blood vessels are led by filopodia-studded endothelial tip cells that respond to angiogenic signals. Mosaic lineage tracing previously revealed that NRP1 is essential for tip cell function, although its mechanistic role in tip cells remains poorly defined. Here, we show that NRP1 is dispensable for genetic tip cell identity. Instead, we find that NRP1 is essential to form the filopodial bursts that distinguish tip cells morphologically from neighboring stalk cells, because it enables the extracellular matrix (ECM)-induced activation of CDC42, a key regulator of filopodia formation. Accordingly, NRP1 knockdown and pharmacological CDC42 inhibition similarly impaired filopodia formation in vitro and in developing zebrafish in vivo. During mouse retinal angiogenesis, CDC42 inhibition impaired tip cell and vascular network formation, causing defects that resembled those due to loss of ECM-induced, but not VEGF-induced, NRP1 signaling. We conclude that NRP1 enables ECM-induced filopodia formation for tip cell function during sprouting angiogenesis.
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Affiliation(s)
- Alessandro Fantin
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, UK
| | - Anastasia Lampropoulou
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, UK
| | - Gaia Gestri
- UCL Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - Claudio Raimondi
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, UK
| | - Valentina Senatore
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, UK
| | - Ian Zachary
- UCL Division of Medicine, University College London, 5 University Street, London WC1E 6JJ, UK
| | - Christiana Ruhrberg
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, UK.
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45
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Vanhollebeke B, Stone OA, Bostaille N, Cho C, Zhou Y, Maquet E, Gauquier A, Cabochette P, Fukuhara S, Mochizuki N, Nathans J, Stainier DY. Tip cell-specific requirement for an atypical Gpr124- and Reck-dependent Wnt/β-catenin pathway during brain angiogenesis. eLife 2015; 4. [PMID: 26051822 PMCID: PMC4456509 DOI: 10.7554/elife.06489] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 05/07/2015] [Indexed: 12/12/2022] Open
Abstract
Despite the critical role of endothelial Wnt/β-catenin signaling during central nervous system (CNS) vascularization, how endothelial cells sense and respond to specific Wnt ligands and what aspects of the multistep process of intra-cerebral blood vessel morphogenesis are controlled by these angiogenic signals remain poorly understood. We addressed these questions at single-cell resolution in zebrafish embryos. We identify the GPI-anchored MMP inhibitor Reck and the adhesion GPCR Gpr124 as integral components of a Wnt7a/Wnt7b-specific signaling complex required for brain angiogenesis and dorsal root ganglia neurogenesis. We further show that this atypical Wnt/β-catenin signaling pathway selectively controls endothelial tip cell function and hence, that mosaic restoration of single wild-type tip cells in Wnt/β-catenin-deficient perineural vessels is sufficient to initiate the formation of CNS vessels. Our results identify molecular determinants of ligand specificity of Wnt/β-catenin signaling and provide evidence for organ-specific control of vascular invasion through tight modulation of tip cell function. DOI:http://dx.doi.org/10.7554/eLife.06489.001 Organs develop alongside the network of blood vessels that supply them with oxygen and nutrients. One way that new blood vessels grow is by sprouting out of the side of an existing vessel, via a process called angiogenesis. This process relies on signals that are received by the endothelial cells that line the inner wall of blood vessels, and that direct the cells to form a new ‘sprout’, consisting of tip and stalk cells. In the developing brain, the Wnt/β-catenin signaling pathway helps direct the formation of blood vessels. In this pathway, a member of a protein family called Wnt signals to specific proteins on the surface of the cells lining the blood vessels. Much effort has gone into uncovering the identity of these proteins, with many studies looking at blood vessel development in the brain of mouse embryos. In this study, Vanhollebeke et al. turned to zebrafish embryos to uncover new regulators of angiogenesis and define their roles during the multi-step process of blood vessel development in the brain. A variety of experimental techniques were used to alter and study the activity of different Wnt signaling pathway components. These experiments revealed that the Wnt7a and Wnt7b proteins signal to an endothelial cell membrane protein complex containing the proteins Gpr124 and Reck. Vanhollebeke et al. then created ‘mosaic’ zebrafish embryos, which contained two genetically distinct types of cells—cells that were missing one of the components of Wnt/β-catenin signaling pathway, and wild-type cells. Visualizing the growth of the vessels showed that all the new blood vessels that sprouted had normal tip cells. However, the cells in the stalk of the sprout could be either normal or missing a signaling protein. These findings demonstrate that Wnt/β-catenin signaling controls the pattern of blood vessel development in the brain by acting specifically on the invasive behaviors of the tip cells of new sprouts, a cellular mechanism that allows efficient organ-specific control of vascularization. DOI:http://dx.doi.org/10.7554/eLife.06489.002
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Affiliation(s)
- Benoit Vanhollebeke
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, United States
| | - Oliver A Stone
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, United States
| | - Naguissa Bostaille
- Institut de Biologie et de Médecine Moléculaires, Université Libre de Bruxelles, Gosselies, Belgium
| | - Chris Cho
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, United States
| | - Yulian Zhou
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, United States
| | - Emilie Maquet
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, United States
| | - Anne Gauquier
- Institut de Biologie et de Médecine Moléculaires, Université Libre de Bruxelles, Gosselies, Belgium
| | - Pauline Cabochette
- Institut de Biologie et de Médecine Moléculaires, Université Libre de Bruxelles, Gosselies, Belgium
| | - Shigetomo Fukuhara
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Jeremy Nathans
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, United States
| | - Didier Yr Stainier
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, United States
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46
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Crucke J, Van de Kelft A, Huysseune A. The innervation of the zebrafish pharyngeal jaws and teeth. J Anat 2015; 227:62-71. [PMID: 26018453 DOI: 10.1111/joa.12321] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2015] [Indexed: 12/12/2022] Open
Abstract
Zebrafish (Danio rerio) teeth are increasingly used as a model to study odontogenesis in non-mammalians. Using serial semi-thin section histology and immunohistochemistry, the nerves innervating the pharyngeal jaws and teeth have been identified. The last pair of branchial arches, which are non-gill bearing but which carry the teeth, are innervated by an internal branch of a post-trematic ramus of the vagal nerve. Another, external, branch is probably responsible for the motor innervation of the branchiomeric musculature. Nerve fibres appear in the pulp cavity of the teeth only late during cytodifferentiation, and are therefore likely not involved in early steps of tooth formation. The precise role of the nervous system during continuous tooth replacement remains to be determined. Nonetheless, this study provides the necessary morphological background information to address this question.
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Affiliation(s)
- Jeroen Crucke
- Evolutionary Developmental Biology, Ghent University, Ghent, Belgium
| | | | - Ann Huysseune
- Evolutionary Developmental Biology, Ghent University, Ghent, Belgium
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47
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Ristori E, Lopez-Ramirez MA, Narayanan A, Hill-Teran G, Moro A, Calvo CF, Thomas JL, Nicoli S. A Dicer-miR-107 Interaction Regulates Biogenesis of Specific miRNAs Crucial for Neurogenesis. Dev Cell 2015; 32:546-60. [PMID: 25662174 DOI: 10.1016/j.devcel.2014.12.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 10/16/2014] [Accepted: 12/17/2014] [Indexed: 01/07/2023]
Abstract
Dicer controls the biogenesis of microRNAs (miRNAs) and is essential for neurogenesis. Recent reports show that the levels and substrate selectivity of DICER result in the preferential biogenesis of specific miRNAs in vitro. However, how dicer expression levels and miRNA biogenesis are regulated in vivo and how this affects neurogenesis is incompletely understood. Here we show that during zebrafish hindbrain development dicer expression levels are controlled by miR-107 to tune the biogenesis of specific miRNAs, such as miR-9, whose levels regulate neurogenesis. Loss of miR-107 function stabilizes dicer levels and miR-9 biogenesis across the ventricular hindbrain zone, resulting in an increase of both proliferating progenitors and postmitotic neurons. miR-9 ectopic accumulation in differentiating neuronal cells recapitulated the excessive neurogenesis phenotype. We propose that miR-107 modulation of dicer levels in differentiating neuronal cells is required to maintain the homeostatic levels of specific miRNAs, whose precise accumulation is essential for neurogenesis.
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Affiliation(s)
- Emma Ristori
- Yale Cardiovascular Research Center, Internal Medicine, Yale University, New Haven, CT 06511, USA
| | | | - Anand Narayanan
- Yale Cardiovascular Research Center, Internal Medicine, Yale University, New Haven, CT 06511, USA
| | - Guillermina Hill-Teran
- Yale Cardiovascular Research Center, Internal Medicine, Yale University, New Haven, CT 06511, USA
| | - Albertomaria Moro
- Yale Cardiovascular Research Center, Internal Medicine, Yale University, New Haven, CT 06511, USA
| | - Charles-Félix Calvo
- University Pierre et Marie Curie-Paris 6, Centre de Recherche de l'Institut du Cerveau et de la Moelle Epiniere, UMR S975, Paris 75651, France; INSERM/CNRS U-1127/UMR-7225, Paris 75651, France; AP-HP, Groupe Hospitalier Pitié-Salpètrière, Paris 75651, France
| | - Jean-Léon Thomas
- Yale Cardiovascular Research Center, Internal Medicine, Yale University, New Haven, CT 06511, USA; University Pierre et Marie Curie-Paris 6, Centre de Recherche de l'Institut du Cerveau et de la Moelle Epiniere, UMR S975, Paris 75651, France; INSERM/CNRS U-1127/UMR-7225, Paris 75651, France; AP-HP, Groupe Hospitalier Pitié-Salpètrière, Paris 75651, France
| | - Stefania Nicoli
- Yale Cardiovascular Research Center, Internal Medicine, Yale University, New Haven, CT 06511, USA.
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Gilland E, Straka H, Wong TW, Baker R, Zottoli SJ. A hindbrain segmental scaffold specifying neuronal location in the adult goldfish, Carassius auratus. J Comp Neurol 2014; 522:2446-64. [PMID: 24452830 DOI: 10.1002/cne.23544] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 01/15/2014] [Accepted: 01/17/2014] [Indexed: 12/18/2022]
Abstract
The vertebrate hindbrain develops as a series of well-defined neuroepithelial segments or rhombomeres. While rhombomeres are visible in all vertebrate embryos, generally there is not any visible segmental anatomy in the brains of adults. Teleost fish are exceptional in retaining a rhombomeric pattern of reticulospinal neurons through embryonic, larval, and adult periods. We use this feature to map more precisely the segmental imprint in the reticular and motor basal hindbrain of adult goldfish. Analysis of serial sections cut in three planes and computer reconstructions of retrogradely labeled reticulospinal neurons yielded a segmental framework compatible with previous reports and more amenable to correlation with surrounding neuronal features. Cranial nerve motoneurons and octavolateral efferent neurons were aligned to the reticulospinal scaffold by mapping neurons immunopositive for choline acetyltransferase or retrogradely labeled from cranial nerve roots. The mapping corresponded well with the known ontogeny of these neurons and helps confirm the segmental territories defined by reticulospinal anatomy. Because both the reticulospinal and the motoneuronal segmental patterns persist in the hindbrain of adult goldfish, we hypothesize that a permanent "hindbrain framework" may be a general property that is retained in adult vertebrates. The establishment of a relationship between individual segments and neuronal phenotypes provides a convenient method for future studies that combine form, physiology, and function in adult vertebrates.
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Affiliation(s)
- E Gilland
- Department of Physiology and Neuroscience, New York University Medical Center, New York, New York, 10016; Marine Biological Laboratory, Woods Hole, Massachusetts, 02543; Department of Anatomy, Howard University College of Medicine, Washington, DC, 20059
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Crucke J, Huysseune A. Blocking VEGF signaling delays development of replacement teeth in zebrafish. J Dent Res 2014; 94:157-65. [PMID: 25391620 DOI: 10.1177/0022034514557156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The dentition in zebrafish is extremely and richly vascularized, but the function of the vasculature, in view of the continuous replacement of the teeth, remains elusive. Through application of SU5416, a vascular endothelial growth factor receptor inhibitor, we studied the role of the blood vessels in the dentition of the zebrafish. We were unable to show an effect on the development of first-generation teeth as well as first tooth replacement. However, in juvenile fish, a delay was observed in the developmental state of the replacement tooth compared with what was expected based on the maturation state of the functional tooth. Furthermore, we observed a difference between treated and nontreated fish in the distance between blood vessels and developing replacement teeth. In conclusion, our results provide support for a nutritive, rather than an inductive, function of the vasculature in the process of tooth development and replacement.
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Affiliation(s)
- J Crucke
- Evolutionary Developmental Biology, Ghent University, Belgium
| | - A Huysseune
- Evolutionary Developmental Biology, Ghent University, Belgium
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Roy NM, DeWolf S, Schutt A, Wright A, Steele L. Neural alterations from lead exposure in zebrafish. Neurotoxicol Teratol 2014; 46:40-8. [DOI: 10.1016/j.ntt.2014.08.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 08/26/2014] [Accepted: 08/27/2014] [Indexed: 12/21/2022]
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