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Wilsch-Bräuninger M, Peters J, Huttner WB. High-resolution 3D ultrastructural analysis of developing mouse neocortex reveals long slender processes of endothelial cells that enter neural cells. Front Cell Dev Biol 2024; 12:1344734. [PMID: 38500687 PMCID: PMC10945550 DOI: 10.3389/fcell.2024.1344734] [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: 11/26/2023] [Accepted: 01/31/2024] [Indexed: 03/20/2024] Open
Abstract
The development of the neocortex involves an interplay between neural cells and the vasculature. However, little is known about this interplay at the ultrastructural level. To gain a 3D insight into the ultrastructure of the developing neocortex, we have analyzed the embryonic mouse neocortex by serial block-face scanning electron microscopy (SBF-SEM). In this study, we report a first set of findings that focus on the interaction of blood vessels, notably endothelial tip cells (ETCs), and the neural cells in this tissue. A key observation was that the processes of ETCs, located either in the ventricular zone (VZ) or subventricular zone (SVZ)/intermediate zone (IZ), can enter, traverse the cytoplasm, and even exit via deep plasma membrane invaginations of the host cells, including apical progenitors (APs), basal progenitors (BPs), and newborn neurons. More than half of the ETC processes were found to enter the neural cells. Striking examples of this ETC process "invasion" were (i) protrusions of apical progenitors or newborn basal progenitors into the ventricular lumen that contained an ETC process inside and (ii) ETC process-containing protrusions of neurons that penetrated other neurons. Our observations reveal a - so far unknown - complexity of the ETC-neural cell interaction.
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Affiliation(s)
| | | | - Wieland B. Huttner
- Max-Planck-Institute of Molecular Cell Biology and Genetics, Dresden, Germany
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2
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Bilkic I, Sotelo D, Anujarerat S, Ortiz NR, Alonzo M, El Khoury R, Loyola CC, Joddar B. Development of an extrusion-based 3D-printing strategy for clustering of human neural progenitor cells. Heliyon 2022; 8:e12250. [PMID: 36636220 PMCID: PMC9830177 DOI: 10.1016/j.heliyon.2022.e12250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/28/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
3D bioprinting offers a simplified solution for the engineering of complex tissue parts for in-vitro drug discovery or, in-vivo implantation. However, significant amount of challenges exist in 3D bioprinting of neural tissues, as these are sensitive cell types to handle via extrusion bioprinting techniques. We assessed the feasibility of bioprinting human neural progenitor cells (NPCs) in 3D hydrogel lattices using a fibrinogen-alginate-chitosan bioink, previously optimized for neural-cell growth, and subsequently modified for structural support during extrusion printing, in this study. The original bioink used in this study was made by adding optimized amounts of high- and medium-viscosity alginate to the fibrinogen-chitosan-based bioink and making it extrudable under shear pressure. The mechanically robust 3D constructs promoted NPC cluster formation and maintained their morphology and viability during the entire culture period. This strategy may be useful for co-culturing of NPCs along with other cell types such as cardiac, vascular, and other cells during 3D bioprinting.
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Affiliation(s)
- Ines Bilkic
- Department of Chemical Engineering and Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA,Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Diana Sotelo
- Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA,Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Stephanie Anujarerat
- Department of Chemical Engineering and Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA,Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Nickolas R. Ortiz
- Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA,Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Matthew Alonzo
- Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA,Department of Metallurgical, Materials, and Biomedical Engineering, M201 Engineering, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX, 79968, USA
| | - Raven El Khoury
- Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA,Department of Metallurgical, Materials, and Biomedical Engineering, M201 Engineering, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX, 79968, USA
| | - Carla C. Loyola
- Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA,Department of Metallurgical, Materials, and Biomedical Engineering, M201 Engineering, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX, 79968, USA
| | - Binata Joddar
- Inspired Materials and Stem-Cell Based Tissue Engineering Laboratory (IMSTEL), The University of Texas at El Paso, El Paso, TX, 79968, USA,Department of Metallurgical, Materials, and Biomedical Engineering, M201 Engineering, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX, 79968, USA,Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA,Border Biomedical Research Center, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX, 79968, USA,Corresponding author.
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3
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Akindona FA, Frederico SC, Hancock JC, Gilbert MR. Exploring the origin of the cancer stem cell niche and its role in anti-angiogenic treatment for glioblastoma. Front Oncol 2022; 12:947634. [PMID: 36091174 PMCID: PMC9454306 DOI: 10.3389/fonc.2022.947634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
Cancer stem cells are thought to be the main drivers of tumorigenesis for malignancies such as glioblastoma (GBM). They are maintained through a close relationship with the tumor vasculature. Previous literature has well-characterized the components and signaling pathways for maintenance of this stem cell niche, but details on how the niche initially forms are limited. This review discusses development of the nonmalignant neural and hematopoietic stem cell niches in order to draw important parallels to the malignant environment. We then discuss what is known about the cancer stem cell niche, its relationship with angiogenesis, and provide a hypothesis for its development in GBM. A better understanding of the mechanisms of development of the tumor stem cell niche may provide new insights to potentially therapeutically exploit.
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Affiliation(s)
- Funto A. Akindona
- Neuro-Oncology Branch, Center for Cancer Research (CCR), National Cancer Institute (NCI), National Institutes of Health, Bethesda, MD, United States
| | - Stephen C. Frederico
- Neuro-Oncology Branch, Center for Cancer Research (CCR), National Cancer Institute (NCI), National Institutes of Health, Bethesda, MD, United States
- University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - John C. Hancock
- Neuro-Oncology Branch, Center for Cancer Research (CCR), National Cancer Institute (NCI), National Institutes of Health, Bethesda, MD, United States
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Mark R. Gilbert
- Neuro-Oncology Branch, Center for Cancer Research (CCR), National Cancer Institute (NCI), National Institutes of Health, Bethesda, MD, United States
- *Correspondence: Mark R. Gilbert,
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4
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McCarty JH. αvβ8 integrin adhesion and signaling pathways in development, physiology and disease. J Cell Sci 2020; 133:133/12/jcs239434. [PMID: 32540905 DOI: 10.1242/jcs.239434] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cells must interpret a complex milieu of extracellular cues to modulate intracellular signaling events linked to proliferation, differentiation, migration and other cellular processes. Integrins are heterodimeric transmembrane proteins that link the extracellular matrix (ECM) to the cytoskeleton and control intracellular signaling events. A great deal is known about the structural and functional properties for most integrins; however, the adhesion and signaling pathways controlled by αvβ8 integrin, which was discovered nearly 30 years ago, have only recently been characterized. αvβ8 integrin is a receptor for ECM-bound forms of latent transforming growth factor β (TGFβ) proteins and promotes the activation of TGFβ signaling pathways. Studies of the brain, lung and immune system reveal that the αvβ8 integrin-TGFβ axis mediates cell-cell contact and communication within complex multicellular structures. Perturbing components of this axis results in aberrant cell-cell adhesion and signaling leading to the initiation of various pathologies, including neurodegeneration, fibrosis and cancer. As discussed in this Review, understanding the functions for αvβ8 integrin, its ECM ligands and intracellular effector proteins is not only an important topic in cell biology, but may lead to new therapeutic strategies to treat human pathologies related to integrin dysfunction.
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Affiliation(s)
- Joseph H McCarty
- Department of Neurosurgery, Brain Tumor Center, M.D. Anderson Cancer Center, 6767 Bertner Avenue, Unit 1004, Houston, TX 77030, USA
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Puelles L, Martínez-Marin R, Melgarejo-Otalora P, Ayad A, Valavanis A, Ferran JL. Patterned Vascularization of Embryonic Mouse Forebrain, and Neuromeric Topology of Major Human Subarachnoidal Arterial Branches: A Prosomeric Mapping. Front Neuroanat 2019; 13:59. [PMID: 31275117 PMCID: PMC6593354 DOI: 10.3389/fnana.2019.00059] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 05/22/2019] [Indexed: 01/24/2023] Open
Abstract
The prosomeric brain model contemplates progressive regionalization of the central nervous system (CNS) from a molecular and morphological ontogenetic perspective. It defines the forebrain axis relative to the notochord, and contemplates intersecting longitudinal (zonal, columnar) and transversal (neuromeric) patterning mechanisms. A checkboard pattern of histogenetic units of the neural wall results, where each unit is differentially fated by an unique profile of active genes. These natural neural units later expand their radial dimension during neurogenesis, histogenesis, and correlative differential morphogenesis. This fundamental topologic framework is shared by all vertebrates, as a Bauplan, each lineage varying in some subtle aspects. So far the prosomeric model has been applied only to neural structures, but we attempt here a prosomeric analysis of the hypothesis that major vessels invade the brain wall in patterns that are congruent with its intrinsic natural developmental units, as postulated in the prosomeric model. Anatomic and embryologic studies of brain blood vessels have classically recorded a conserved pattern of branches (thus the conventional terminology), and clinical experience has discovered a standard topography of many brain arterial terminal fields. Such results were described under assumptions of the columnar model of the forebrain, prevalent during the last century, but this is found insufficient in depth and explanatory power in the modern molecular scenario. We have thus explored the possibility that brain vascularization in rodents and humans may relate systematically to genoarchitectonic forebrain subdivisions contemplated in the prosomeric model. Specifically, we examined first whether early vascular invasion of some molecularly characterized prosomeric domains shows heterochrony. We indeed found a heterochronic pattern of vascular invasion that distinguishes between adjacent brain areas with differential molecular profiles. We next mapped topologically on the prosomeric model the major arterial branches serving the human brain. The results of this approach bear on the possibility of a developmentally-based modern arterial terminology.
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Affiliation(s)
- Luis Puelles
- Department of Human Anatomy, School of Medicine, University of Murcia and IMIB-Arrixaca Institute, Murcia, Spain
| | - Rafael Martínez-Marin
- Department of Human Anatomy, School of Medicine, University of Murcia and IMIB-Arrixaca Institute, Murcia, Spain
| | - Pedro Melgarejo-Otalora
- Department of Human Anatomy, School of Medicine, University of Murcia and IMIB-Arrixaca Institute, Murcia, Spain
| | - Abdelmalik Ayad
- Department of Human Anatomy, School of Medicine, University of Murcia and IMIB-Arrixaca Institute, Murcia, Spain
| | - Antonios Valavanis
- Department of Neuroradiology, University Hospital of Zurich, Zurich, Switzerland
| | - José Luis Ferran
- Department of Human Anatomy, School of Medicine, University of Murcia and IMIB-Arrixaca Institute, Murcia, Spain
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6
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Angiogenic potential of co-spheroids of neural stem cells and endothelial cells in injectable gelatin-based hydrogel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:140-149. [DOI: 10.1016/j.msec.2019.01.089] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/12/2018] [Accepted: 01/18/2019] [Indexed: 12/20/2022]
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7
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Bukiya AN, Dopico AM. Fetal Cerebral Circulation as Target of Maternal Alcohol Consumption. Alcohol Clin Exp Res 2018; 42:1006-1018. [PMID: 29672868 PMCID: PMC5984173 DOI: 10.1111/acer.13755] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/08/2018] [Indexed: 12/29/2022]
Abstract
Alcohol (ethanol [EtOH]) is one of the most widely used psychoactive substances worldwide. Alcohol consumption during pregnancy may result in a wide range of morphological and neurodevelopmental abnormalities termed fetal alcohol spectrum disorders (FASD), with the most severe cases diagnosed as fetal alcohol syndrome (FAS). FAS and FASD are not readily curable and currently represent the leading preventable causes of birth defect and neurodevelopmental delay in the United States. The etiology of FAS/FASD remains poorly understood. This review focuses on the effects of prenatal alcohol exposure (PAE) on fetal cerebrovascular function. A brief introduction to the epidemiology of alcohol consumption and the developmental characteristics of fetal cerebral circulation is followed by several sections that discuss current evidence documenting alcohol-driven alterations of fetal cerebral blood flow, artery function, and microvessel networks. The material offers mechanistic insights at the vascular level itself into the pathophysiology of PAE.
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Affiliation(s)
- Anna N Bukiya
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Alex M Dopico
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, Tennessee
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8
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Casas BS, Vitória G, do Costa MN, Madeiro da Costa R, Trindade P, Maciel R, Navarrete N, Rehen SK, Palma V. hiPSC-derived neural stem cells from patients with schizophrenia induce an impaired angiogenesis. Transl Psychiatry 2018; 8:48. [PMID: 29467462 PMCID: PMC5821759 DOI: 10.1038/s41398-018-0095-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 12/30/2017] [Indexed: 12/18/2022] Open
Abstract
Schizophrenia is a neurodevelopmental disease characterized by cerebral connectivity impairment and loss of gray matter. It was described in adult schizophrenia patients (SZP) that concentration of VEGFA, a master angiogenic factor, is decreased. Recent evidence suggests cerebral hypoperfusion related to a dysfunctional Blood Brain Barrier (BBB) in SZP. Since neurogenesis and blood-vessel formation occur in a coincident and coordinated fashion, a defect in neurovascular development could result in increased vascular permeability and, therefore, in poor functionality of the SZP's neurons. Here, we characterized the conditioned media (CM) of human induced Pluripotent Stem Cells (hiPSC)-derived Neural Stem Cells of SZP (SZP NSC) versus healthy subjects (Ctrl NSC), and its impact on angiogenesis. Our results reveal that SZP NSC have an imbalance in the secretion and expression of several angiogenic factors, among them non-canonical neuro-angiogenic guidance factors. SZP NSC migrated less and their CM was less effective in inducing migration and angiogenesis both in vitro and in vivo. Since SZP originates during embryonic brain development, our findings suggest a defective crosstalk between NSC and endothelial cells (EC) during the formation of the neuro-angiogenic niche.
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Affiliation(s)
- Bárbara S Casas
- Laboratory of Stem Cells and Development, Universidad de Chile, Santiago, Chile
| | - Gabriela Vitória
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | - Marcelo N do Costa
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Pablo Trindade
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | - Renata Maciel
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | - Nelson Navarrete
- Universidad de Chile Clinical Hospital, Región Metropolitana, Chile
| | - Stevens K Rehen
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil.
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Verónica Palma
- Laboratory of Stem Cells and Development, Universidad de Chile, Santiago, Chile.
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Santhosh D, Huang Z. A Tie2-driven BAC-TRAP transgenic line for in vivo endothelial gene profiling. Genesis 2016; 54:136-45. [PMID: 26817747 DOI: 10.1002/dvg.22923] [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] [Received: 09/15/2015] [Revised: 12/30/2015] [Accepted: 01/25/2016] [Indexed: 12/14/2022]
Abstract
Recent technological innovations including bacterial artificial chromosome-based translating ribosome affinity purification (BAC-TRAP) have greatly facilitated analysis of cell type-specific gene expression in vivo, especially in the nervous system. To better study endothelial gene expression in vivo, we have generated a BAC-TRAP transgenic mouse line where the L10a ribosomal subunit is tagged with EGFP and placed under the control of the endothelium-specific Tie2 (Tek) promoter. We show that transgene expression in this line is widely, but specifically, detected in endothelial cells in several brain regions throughout pre- and postnatal development, as well as in other organs. We also show that this line results in highly significant enrichment of endothelium-specific mRNAs from brain tissues at different stages. This BAC-TRAP line therefore provides a useful genetic tool for in vivo endothelial gene profiling under various developmental, physiological, and pathological conditions. genesis 54:136-145, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Devi Santhosh
- Department of Neuroscience, Program in Genetics and Medical Genetics, University of Wisconsin-Madison, Madison, Wisconsin.,Department of and Neurology, Program in Genetics and Medical Genetics, University of Wisconsin-Madison, Madison, Wisconsin
| | - Zhen Huang
- Department of Neuroscience, Program in Genetics and Medical Genetics, University of Wisconsin-Madison, Madison, Wisconsin
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