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Phoon CK, Aristizábal O, Farhoud M, Turnbull DH, Wadghiri YZ. Mouse Cardiovascular Imaging. Curr Protoc 2024; 4:e1116. [PMID: 39222027 PMCID: PMC11371386 DOI: 10.1002/cpz1.1116] [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] [Indexed: 09/04/2024]
Abstract
The mouse is the mammalian model of choice for investigating cardiovascular biology, given our ability to manipulate it by genetic, pharmacologic, mechanical, and environmental means. Imaging is an important approach to phenotyping both function and structure of cardiac and vascular components. This review details commonly used imaging approaches, with a focus on echocardiography and magnetic resonance imaging, with brief overviews of other imaging modalities. In this update, we also emphasize the importance of rigor and reproducibility in imaging approaches, experimental design, and documentation. Finally, we briefly outline emerging imaging approaches but caution that reliability and validity data may be lacking. © 2024 Wiley Periodicals LLC.
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Affiliation(s)
- Colin K.L. Phoon
- Division of Pediatric Cardiology, Department of Pediatrics, New York University Grossman School of Medicine, New York, NY
| | - Orlando Aristizábal
- Department of Radiology, Bernard and Irene Schwartz Center for Biomedical Imaging, & Center for Advanced Imaging Innovation and Research, New York University Grossman School of Medicine, New York, NY
- Preclinical Imaging, Division for Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY
| | | | - Daniel H. Turnbull
- Department of Radiology, Bernard and Irene Schwartz Center for Biomedical Imaging, & Center for Advanced Imaging Innovation and Research, New York University Grossman School of Medicine, New York, NY
- Department of Pathology, New York University Grossman School of Medicine, New York, New York
| | - Youssef Z. Wadghiri
- Department of Radiology, Bernard and Irene Schwartz Center for Biomedical Imaging, & Center for Advanced Imaging Innovation and Research, New York University Grossman School of Medicine, New York, NY
- Preclinical Imaging, Division for Advanced Research Technologies, New York University Grossman School of Medicine, New York, NY
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Tiberio F, Coda ARD, Tosi DD, Luzi D, Polito L, Liso A, Lattanzi W. Mechanobiology and Primary Cilium in the Pathophysiology of Bone Marrow Myeloproliferative Diseases. Int J Mol Sci 2024; 25:8860. [PMID: 39201546 PMCID: PMC11354938 DOI: 10.3390/ijms25168860] [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: 06/21/2024] [Revised: 08/07/2024] [Accepted: 08/09/2024] [Indexed: 09/02/2024] Open
Abstract
Philadelphia-Negative Myeloproliferative neoplasms (MPNs) are a diverse group of blood cancers leading to excessive production of mature blood cells. These chronic diseases, including polycythemia vera (PV), essential thrombocythemia (ET), and primary myelofibrosis (PMF), can significantly impact patient quality of life and are still incurable in the vast majority of the cases. This review examines the mechanobiology within a bone marrow niche, emphasizing the role of mechanical cues and the primary cilium in the pathophysiology of MPNs. It discusses the influence of extracellular matrix components, cell-cell and cell-matrix interactions, and mechanosensitive structures on hematopoietic stem cell (HSC) behavior and disease progression. Additionally, the potential implications of the primary cilium as a chemo- and mechanosensory organelle in bone marrow cells are explored, highlighting its involvement in signaling pathways crucial for hematopoietic regulation. This review proposes future research directions to better understand the dysregulated bone marrow niche in MPNs and to identify novel therapeutic targets.
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Affiliation(s)
- Federica Tiberio
- Department of Life Science and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (F.T.); (D.D.T.); (L.P.)
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
| | | | - Domiziano Dario Tosi
- Department of Life Science and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (F.T.); (D.D.T.); (L.P.)
| | - Debora Luzi
- S.C. Oncoematologia, Azienda Ospedaliera di Terni, 05100 Terni, Italy;
| | - Luca Polito
- Department of Life Science and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (F.T.); (D.D.T.); (L.P.)
| | - Arcangelo Liso
- Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
| | - Wanda Lattanzi
- Department of Life Science and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (F.T.); (D.D.T.); (L.P.)
- Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
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Luo X, Liu L, Rong H, Liu X, Yang L, Li N, Shi H. ENU-based dominant genetic screen identifies contractile and neuronal gene mutations in congenital heart disease. Genome Med 2024; 16:97. [PMID: 39135118 PMCID: PMC11318149 DOI: 10.1186/s13073-024-01372-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 08/05/2024] [Indexed: 08/15/2024] Open
Abstract
BACKGROUND Congenital heart disease (CHD) is the most prevalent congenital anomaly, but its underlying causes are still not fully understood. It is believed that multiple rare genetic mutations may contribute to the development of CHD. METHODS In this study, we aimed to identify novel genetic risk factors for CHD using an ENU-based dominant genetic screen in mice. We analyzed fetuses with malformed hearts and compared them to control littermates by whole exome or whole genome sequencing (WES/WGS). The differences in mutation rates between observed and expected values were tested using the Poisson and Binomial distribution. Additionally, we compared WES data from human CHD probands obtained from the Pediatric Cardiac Genomics Consortium with control subjects from the 1000 Genomes Project using Fisher's exact test to evaluate the burden of rare inherited damaging mutations in patients. RESULTS By screening 10,285 fetuses, we identified 1109 cases with various heart defects, with ventricular septal defects and bicuspid aortic valves being the most common types. WES/WGS analysis of 598 cases and 532 control littermates revealed a higher number of ENU-induced damaging mutations in cases compared to controls. GO term and KEGG pathway enrichment analysis showed that pathways related to cardiac contraction and neuronal development and functions were enriched in cases. Further analysis of 1457 human CHD probands and 2675 control subjects also revealed an enrichment of genes associated with muscle and nervous system development in patients. By combining the mice and human data, we identified a list of 101 candidate digenic genesets, from which each geneset was co-mutated in at least one mouse and two human probands with CHD but not in control mouse and control human subjects. CONCLUSIONS Our findings suggest that gene mutations affecting early hemodynamic perturbations in the developing heart may play a significant role as a genetic risk factor for CHD. Further validation of the candidate gene set identified in this study could enhance our understanding of the complex genetics underlying CHD and potentially lead to the development of new diagnostic and therapeutic approaches.
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Affiliation(s)
- Xiaoxi Luo
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
- School of Medicine, Westlake University, Hangzhou, Zhejiang, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China
- Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China
| | - Lifeng Liu
- School of Medicine, Westlake University, Hangzhou, Zhejiang, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China
- Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China
| | - Haowei Rong
- School of Medicine, Westlake University, Hangzhou, Zhejiang, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China
- Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China
| | - Xiangyang Liu
- School of Medicine, Westlake University, Hangzhou, Zhejiang, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China
- Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China
| | - Ling Yang
- Westlake University High-Performance Computing Center, Westlake University, Hangzhou, Zhejiang, China
| | - Nan Li
- Westlake University High-Performance Computing Center, Westlake University, Hangzhou, Zhejiang, China
| | - Hongjun Shi
- School of Medicine, Westlake University, Hangzhou, Zhejiang, China.
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, 310024, China.
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China.
- Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang, China.
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He J, Blazeski A, Nilanthi U, Menéndez J, Pirani SC, Levic DS, Bagnat M, Singh MK, Raya JG, García-Cardeña G, Torres-Vázquez J. Plxnd1-mediated mechanosensing of blood flow controls the caliber of the Dorsal Aorta via the transcription factor Klf2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.24.576555. [PMID: 38328196 PMCID: PMC10849625 DOI: 10.1101/2024.01.24.576555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
The cardiovascular system generates and responds to mechanical forces. The heartbeat pumps blood through a network of vascular tubes, which adjust their caliber in response to the hemodynamic environment. However, how endothelial cells in the developing vascular system integrate inputs from circulatory forces into signaling pathways to define vessel caliber is poorly understood. Using vertebrate embryos and in vitro-assembled microvascular networks of human endothelial cells as models, flow and genetic manipulations, and custom software, we reveal that Plexin-D1, an endothelial Semaphorin receptor critical for angiogenic guidance, employs its mechanosensing activity to serve as a crucial positive regulator of the Dorsal Aorta's (DA) caliber. We also uncover that the flow-responsive transcription factor KLF2 acts as a paramount mechanosensitive effector of Plexin-D1 that enlarges endothelial cells to widen the vessel. These findings illuminate the molecular and cellular mechanisms orchestrating the interplay between cardiovascular development and hemodynamic forces.
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Affiliation(s)
- Jia He
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Adriana Blazeski
- Center for Excellence in Vascular Biology, Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA and Harvard Medical School, Boston, MA, USA
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Uthayanan Nilanthi
- Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, Singapore, 169857
| | - Javier Menéndez
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Samuel C. Pirani
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Daniel S. Levic
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Michel Bagnat
- Department of Cell Biology, Duke University, Durham, NC 27710, USA
| | - Manvendra K. Singh
- Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, Singapore, 169857
- National Heart Research Institute Singapore, National Heart Centre Singapore, 5 Hospital Drive, Singapore, 169609
| | - José G Raya
- Department of Radiology, New York University School of Medicine, New York, NY 10016, USA
| | - Guillermo García-Cardeña
- Center for Excellence in Vascular Biology, Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA and Harvard Medical School, Boston, MA, USA
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Jesús Torres-Vázquez
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY 10016, USA
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Makdissi N. Macrophage Development and Function. Methods Mol Biol 2024; 2713:1-9. [PMID: 37639112 DOI: 10.1007/978-1-0716-3437-0_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Macrophages were first described over a hundred years ago. Throughout the years, they were shown to be essential players in their tissue-specific environment, performing various functions during homeostatic and disease conditions. Recent reports shed more light on their ontogeny as long-lived, self-maintained cells with embryonic origin in most tissues. They populate the different tissues early during development, where they help to establish and maintain homeostasis. In this chapter, the history of macrophages is discussed. Furthermore, macrophage ontogeny and core functions in the different tissues are described.
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Affiliation(s)
- Nikola Makdissi
- Developmental Biology of the Immune System, Life & Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.
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Shi G, Zhang P, Zhang X, Li J, Zheng X, Yan J, Zhang N, Yang H. The spatiotemporal heterogeneity of the biophysical microenvironment during hematopoietic stem cell development: from embryo to adult. Stem Cell Res Ther 2023; 14:251. [PMID: 37705072 PMCID: PMC10500792 DOI: 10.1186/s13287-023-03464-8] [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: 08/17/2022] [Accepted: 08/22/2023] [Indexed: 09/15/2023] Open
Abstract
Hematopoietic stem cells (HSCs) with the ability to self-renew and differentiate are responsible for maintaining the supply of all types of blood cells. The complex and delicate microenvironment surrounding HSCs is called the HSC niche and can provide physical, chemical, and biological stimuli to regulate the survival, maintenance, proliferation, and differentiation of HSCs. Currently, the exploration of the biophysical regulation of HSCs remains in its infancy. There is evidence that HSCs are susceptible to biophysical stimuli, suggesting that the construction of engineered niche biophysical microenvironments is a promising way to regulate the fate of HSCs in vitro and ultimately contribute to clinical applications. In this review, we introduced the spatiotemporal heterogeneous biophysical microenvironment during HSC development, homeostasis, and malignancy. Furthermore, we illustrated how these biophysical cues contribute to HSC behaviors, as well as the possible mechanotransduction mechanisms from the extracellular microenvironment into cells. Comprehending the important functions of these biophysical regulatory factors will provide novel approaches to resolve clinical problems.
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Affiliation(s)
- Guolin Shi
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, Xi'an, Shaanxi, China
- Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Pan Zhang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, Xi'an, Shaanxi, China
- Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- School of Food Science and Engineering, Shaanxi University of Science & Technology, Xi'an, China
| | - Xi Zhang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, Xi'an, Shaanxi, China
- Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Jing Li
- Shaanxi Key Laboratory of Brain Disorders & Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, China
| | - Xinmin Zheng
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, Xi'an, Shaanxi, China
- Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Jinxiao Yan
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, Xi'an, Shaanxi, China
- Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Nu Zhang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, Xi'an, Shaanxi, China
- Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Hui Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China.
- Engineering Research Center of Chinese Ministry of Education for Biological Diagnosis, Treatment and Protection Technology and Equipment, Xi'an, Shaanxi, China.
- Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, China.
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Ornoy A, Miller RK. Yolk sac development, function and role in rodent pregnancy. Birth Defects Res 2023; 115:1243-1254. [PMID: 36949669 DOI: 10.1002/bdr2.2172] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 03/24/2023]
Abstract
During the early phases of embryonic development, the yolk sac serves as an initial placenta in many animal species. While in some, this role subsides around the end of active organogenesis, it continues to have important functions in rodents, alongside the chorio-allantoic placenta. The yolk sac is the initial site of hematopoiesis in many animal species including primates. Cells of epiblastic origin form blood islands that are the forerunners of hematopoietic cells and of the primitive endothelial cells that form the vitelline circulation. The yolk sac is also a major route of embryonic and fetal nutrition apparently as long as it functions. In mammals and especially rodents, macro and micronutrients are absorbed by active pinocytosis into the visceral yolk sac, degraded and the degradation products (i.e., amino acids) are then transferred to the embryo. Interference with the yolk sac function may directly reflect on embryonic growth and development, inducing congenital malformations or in extreme damage, causing embryonic and fetal death. In rodents, many agents were found to damage the yolk sac (i.e., anti-yolk sac antibodies or toxic substances interfering with yolk sac pinocytosis) subsequently affecting the embryo/fetus. Often, the damage to the yolk sac is transient while embryonic damage persists. In humans, decreased yolk sac diameter was associated with diabetic pregnancies and increased diameter was associated with pregnancy loss. In addition, culture of rat yolk sacs in serum obtained from pregnant diabetic women or from women with autoimmune diseases induced severe damage to the visceral yolk sac epithelium and embryonic malformations. It can be concluded that as a result of the crucial role of the yolk sac in the well-being of the early embryo, any damage to its normal function may severely and irreversibly affect further development of the embryo/fetus.
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Affiliation(s)
- Asher Ornoy
- Department of Morphological Sciences and Teratology, Adelson School of Medicine, Ariel University and Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Richard K Miller
- School of Medicine and Dentistry, Departments of Obstetrics/Gynecology, of Pediatrics, of Pathology and of Environmental Medicine, University of Rochester, Rochester, New York, 14642, USA
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Copp AJ, Clark M, Greene NDE. Morphological phenotyping after mouse whole embryo culture. Front Cell Dev Biol 2023; 11:1223849. [PMID: 37601098 PMCID: PMC10435082 DOI: 10.3389/fcell.2023.1223849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/24/2023] [Indexed: 08/22/2023] Open
Abstract
Morphological phenotyping of the mouse embryo is described at neurulation stages, primarily as a guide to evaluating the outcome of whole embryo cultures between embryonic days 8.5 and 9.5. During this period, neural tube closure is initiated and progresses to completion in the cranial region. Spinal closure is still underway at the end of the culture period. The focus of this article is particularly on phenotyping that can be performed at the bench, using a stereomicroscope. This involves assessment of embryonic health, through observation and scoring of yolk sac blood circulation, measurement of developmental stage by somite counting, and determination of crown-rump length as a measure of growth. Axial rotation ("turning") can also be assessed using a simple scoring system. Neural tube closure assessment includes: 1) determining whether closure has been initiated at the Closure 1 site; 2) evaluating the complex steps of cranial neurulation including initiation at Closure sites 2 and 3, and completion of closure at the anterior and hindbrain neuropores; 3) assessment of spinal closure by measurement of posterior neuropore length. Interpretation of defects in neural tube closure requires an appreciation of, first, the stages that particular events are expected to be completed and, second, the correspondence between embryonic landmarks, for example, somite position, and the resulting adult axial levels. Detailed embryonic phenotyping, as described in this article, when combined with the versatile method of whole embryo culture, can form the basis for a wide range of experimental studies in early mouse neural development.
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Affiliation(s)
- Andrew J. Copp
- Developmental Biology and Cancer, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
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Shi L, Song H, Zhou B, Morrow BE. Crk/Crkl regulates early angiogenesis in mouse embryos by accelerating endothelial cell maturation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.12.548782. [PMID: 37503032 PMCID: PMC10369973 DOI: 10.1101/2023.07.12.548782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Rationale Ubiquitously expressed cytoplasmic adaptors CRK and CRKL mediate multiple signaling pathways in mammalian embryogenesis. They are also associated with cardiovascular defects occurring in Miller-Dieker syndrome and 22q11.2 deletion syndrome, respectively. The embryonic mesoderm contributes to the formation of the cardiovascular system, yet the roles that Crk and Crkl play there are not understood on a single cell level. Objectives To determine functions of Crk and Crkl in the embryonic mesoderm during early mouse vascular development. Secondly, we will examine the molecular mechanisms responsible for early embryonic endothelial cell (EC) defects by performing single cell RNA-sequencing (scRNA-seq) and in vivo validation experiments. Methods and Results Inactivation of both Crk and Crkl together using Mesp1 Cre resulted embryonic lethality with severe vascular defects. Although vasculogenesis appeared normal, angiogenesis was disrupted both in the yolk sac and embryo proper, leading to disorganized vascular networks. We performed scRNA-seq of the Mesp1 Cre mesodermal lineage and found that there was upregulation of a great number of angiogenesis and cell migration related genes in ECs in the mutants, including NOTCH signaling genes such as Dll4 and Hey1 . Further bioinformatic analysis of EC subpopulations identified a relative increase in the number of more differentiated angiogenic ECs and decrease in EC progenitors. Consistent with this, we identified an expansion of Dll4 expressing cells within abnormal arteries, in vivo . Also, our bioinformatic data indicates that there is dysregulated expression of lineage genes that promote EC differentiation causing accelerated cell fate progression during EC differentiation. Conclusions Our results show that Crk and Crkl are crucial for regulating early embryonic angiogenesis. Combined inactivation of Crk/Crkl caused precocious EC maturation with an increase of atypical differentiated angiogenic ECs and failed vascular remodeling. This is in part due to increased NOTCH signaling and altered expression of cell migration genes.
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Chuang CK, Chen SF, Su YH, Chen WH, Lin WM, Wang IC, Shyue SK. The Role of SCL Isoforms in Embryonic Hematopoiesis. Int J Mol Sci 2023; 24:ijms24076427. [PMID: 37047400 PMCID: PMC10094407 DOI: 10.3390/ijms24076427] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 03/16/2023] [Accepted: 03/26/2023] [Indexed: 04/01/2023] Open
Abstract
Three waves of hematopoiesis occur in the mouse embryo. The primitive hematopoiesis appears as blood islands in the extra embryonic yolk sac at E7.5. The extra embryonic pro-definitive hematopoiesis launches in late E8 and the embryonic definitive one turns on at E10.5 indicated by the emergence of hemogenic endothelial cells on the inner wall of the extra embryonic arteries and the embryonic aorta. To study the roles of SCL protein isoforms in murine hematopoiesis, the SCL-large (SCL-L) isoform was selectively destroyed with the remaining SCL-small (SCL-S) isoform intact. It was demonstrated that SCL-S was specifically expressed in the hemogenic endothelial cells (HECs) and SCL-L was only detected in the dispersed cells after budding from HECs. The SCLΔ/Δ homozygous mutant embryos only survived to E10.5 with normal extra embryonic vessels and red blood cells. In wild-type mouse embryos, a layer of neatly aligned CD34+ and CD43+ cells appeared on the endothelial wall of the aorta of the E10.5 fetus. However, the cells at the same site expressed CD31 rather than CD34 and/or CD43 in the E10.5 SCLΔ/Δ embryo, indicating that only the endothelial lineage was developed. These results reveal that the SCL-S is sufficient to sustain the primitive hematopoiesis and SCL-L is necessary to launch the definitive hematopoiesis.
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11
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Thowfeequ S, Srinivas S. Embryonic and extraembryonic tissues during mammalian development: shifting boundaries in time and space. Philos Trans R Soc Lond B Biol Sci 2022; 377:20210255. [PMID: 36252217 PMCID: PMC9574638 DOI: 10.1098/rstb.2021.0255] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The first few days of embryonic development in eutherian mammals are dedicated to the specification and elaboration of the extraembryonic tissues. However, where the fetus ends and its adnexa begins is not always as self-evident during the early stages of development, when the definitive body axes are still being laid down, the germ layers being specified and a discrete form or bodyplan is yet to emerge. Function, anatomy, histomorphology and molecular identities have been used through the history of embryology, to make this distinction. In this review, we explore them individually by using specific examples from the early embryo. While highlighting the challenges of drawing discrete boundaries between embryonic and extraembryonic tissues and the limitations of a binary categorization, we discuss how basing such identity on fate is the most universal and conceptually consistent. This article is part of the theme issue 'Extraembryonic tissues: exploring concepts, definitions and functions across the animal kingdom'.
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Affiliation(s)
- Shifaan Thowfeequ
- Department of Physiology, Anatomy and Genetics, University of Oxford, South Parks Road, Oxford OX1 3QX, UK
| | - Shankar Srinivas
- Department of Physiology, Anatomy and Genetics, University of Oxford, South Parks Road, Oxford OX1 3QX, UK
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12
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Liu K, Jin H, Tang M, Zhang S, Tian X, Zhang M, Han X, Liu X, Tang J, Pu W, Li Y, He L, Yang Z, Lui KO, Zhou B. Lineage tracing clarifies the cellular origin of tissue-resident macrophages in the developing heart. J Biophys Biochem Cytol 2022; 221:213182. [PMID: 35482005 DOI: 10.1083/jcb.202108093] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 03/10/2022] [Accepted: 04/14/2022] [Indexed: 11/22/2022] Open
Abstract
Tissue-resident macrophages play essential functions in the maintenance of tissue homeostasis and repair. Recently, the endocardium has been reported as a de novo hemogenic site for the contribution of hematopoietic cells, including cardiac macrophages, during embryogenesis. These observations challenge the current consensus that hematopoiesis originates from the hemogenic endothelium within the yolk sac and dorsal aorta. Whether the developing endocardium has such a hemogenic potential requires further investigation. Here, we generated new genetic tools to trace endocardial cells and reassessed their potential contribution to hematopoietic cells in the developing heart. Fate-mapping analyses revealed that the endocardium contributed minimally to cardiac macrophages and circulating blood cells. Instead, cardiac macrophages were mainly derived from the endothelium during primitive/transient definitive (yolk sac) and definitive (dorsal aorta) hematopoiesis. Our findings refute the concept of endocardial hematopoiesis, suggesting that the developing endocardium gives rise minimally to hematopoietic cells, including cardiac macrophages.
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Affiliation(s)
- Kuo Liu
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.,State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Hengwei Jin
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Muxue Tang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Shaohua Zhang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xueying Tian
- Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Mingjun Zhang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Ximeng Han
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Xiuxiu Liu
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Juan Tang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Wenjuan Pu
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yan Li
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Lingjuan He
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
| | - Zhongzhou Yang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School and Ministry of Education Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, China
| | - Kathy O Lui
- Department of Chemical Pathology, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR, China
| | - Bin Zhou
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.,State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,Key Laboratory of Regenerative Medicine of Ministry of Education, Department of Developmental & Regenerative Biology, College of Life Science and Technology, Jinan University, Guangzhou, China.,School of Life Science and Technology, ShanghaiTech University, Shanghai, China
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13
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Li-Villarreal N, Wong RLY, Garcia MD, Udan RS, Poché RA, Rasmussen TL, Rhyner AM, Wythe JD, Dickinson ME. FOXO1 represses sprouty 2 and sprouty 4 expression to promote arterial specification and vascular remodeling in the mouse yolk sac. Development 2022; 149:274922. [PMID: 35297995 PMCID: PMC8995087 DOI: 10.1242/dev.200131] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 03/04/2022] [Indexed: 11/20/2022]
Abstract
ABSTRACT
Establishing a functional circulatory system is required for post-implantation development during murine embryogenesis. Previous studies in loss-of-function mouse models showed that FOXO1, a Forkhead family transcription factor, is required for yolk sac (YS) vascular remodeling and survival beyond embryonic day (E) 11. Here, we demonstrate that at E8.25, loss of Foxo1 in Tie2-cre expressing cells resulted in increased sprouty 2 (Spry2) and Spry4 expression, reduced arterial gene expression and reduced Kdr (also known as Vegfr2 and Flk1) transcripts without affecting overall endothelial cell identity, survival or proliferation. Using a Dll4-BAC-nlacZ reporter line, we found that one of the earliest expressed arterial genes, delta like 4, is significantly reduced in Foxo1 mutant YS without being substantially affected in the embryo proper. We show that FOXO1 binds directly to previously identified Spry2 gene regulatory elements (GREs) and newly identified, evolutionarily conserved Spry4 GREs to repress their expression. Furthermore, overexpression of Spry4 in transient transgenic embryos largely recapitulates the reduced expression of arterial genes seen in conditional Foxo1 mutants. Together, these data reveal a novel role for FOXO1 as a key transcriptional repressor regulating both pre-flow arterial specification and subsequent vessel remodeling within the murine YS.
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Affiliation(s)
- Nanbing Li-Villarreal
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Rebecca Lee Yean Wong
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Monica D. Garcia
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Ryan S. Udan
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Ross A. Poché
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Tara L. Rasmussen
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Alexander M. Rhyner
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Joshua D. Wythe
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Mary E. Dickinson
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
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14
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Endothelial MEKK3-KLF2/4 signaling integrates inflammatory and hemodynamic signals during definitive hematopoiesis. Blood 2022; 139:2942-2957. [PMID: 35245372 PMCID: PMC9101247 DOI: 10.1182/blood.2021013934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 02/11/2022] [Indexed: 11/20/2022] Open
Abstract
The hematopoietic stem cells (HSCs) that produce blood for the lifetime of an animal arise from RUNX1+ hemogenic endothelial cells (HECs) in the embryonic vasculature through a process of endothelial-to-hematopoietic transition (EHT). Studies have identified inflammatory mediators and fluid shear forces as critical environmental stimuli for EHT, raising the question of how such diverse inputs are integrated to drive HEC specification. Endothelial cell MEKK3-KLF2/4 signaling can be activated by both fluid shear forces and inflammatory mediators, and plays roles in cardiovascular development and disease that have been linked to both stimuli. Here we demonstrate that MEKK3 and KLF2/4 are required in endothelial cells for the specification of RUNX1+ HECs in both the yolk sac and dorsal aorta of the mouse embryo and for their transition to intra-aortic hematopoietic cluster cells (IAHCs). The inflammatory mediators lipopolysaccharide and interferon gamma increase RUNX1+ HECs in an MEKK3-dependent manner. Maternal administration of catecholamines that stimulate embryo cardiac function and accelerate yolk sac vascular remodeling increases EHT by wild-type but not MEKK3-deficient endothelium. These findings identify MEKK-KLF2/4 signaling as an essential pathway for EHT and provide a molecular basis for the integration of diverse environmental inputs, such as inflammatory mediators and hemodynamic forces, during definitive hematopoiesis.
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15
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Azzoni E, Frontera V, Anselmi G, Rode C, James C, Deltcheva EM, Demian AS, Brown J, Barone C, Patelli A, Harman JR, Nicholls M, Conway SJ, Morrissey E, Jacobsen SEW, Sparrow DB, Harris AL, Enver T, de Bruijn MFTR. The onset of circulation triggers a metabolic switch required for endothelial to hematopoietic transition. Cell Rep 2021; 37:110103. [PMID: 34910918 PMCID: PMC8692754 DOI: 10.1016/j.celrep.2021.110103] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/11/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022] Open
Abstract
Hematopoietic stem cells (HSCs) emerge during development from the vascular wall of the main embryonic arteries. The onset of circulation triggers several processes that provide critical external factors for HSC generation. Nevertheless, it is not fully understood how and when the onset of circulation affects HSC emergence. Here we show that in Ncx1-/- mouse embryos devoid of circulation the HSC lineage develops until the phenotypic pro-HSC stage. However, these cells reside in an abnormal microenvironment, fail to activate the hematopoietic program downstream of Runx1, and are functionally impaired. Single-cell transcriptomics shows that during the endothelial-to-hematopoietic transition, Ncx1-/- cells fail to undergo a glycolysis to oxidative phosphorylation metabolic switch present in wild-type cells. Interestingly, experimental activation of glycolysis results in decreased intraembryonic hematopoiesis. Our results suggest that the onset of circulation triggers metabolic changes that allow HSC generation to proceed.
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Affiliation(s)
- Emanuele Azzoni
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK.
| | - Vincent Frontera
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Giorgio Anselmi
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Christina Rode
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Chela James
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK
| | - Elitza M Deltcheva
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK
| | - Atanasiu S Demian
- MRC WIMM Centre for Computational Biology, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - John Brown
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK
| | - Cristiana Barone
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, 20900, Italy
| | - Arianna Patelli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, 20900, Italy
| | - Joe R Harman
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Matthew Nicholls
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Simon J Conway
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, IN 46033, USA
| | - Edward Morrissey
- MRC WIMM Centre for Computational Biology, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Sten Eirik W Jacobsen
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK; Hematopoietic Stem Cell Laboratory, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK; Department of Cell and Molecular Biology, Wallenberg Institute for Regenerative Medicine and Department of Medicine, Center for Hematology and Regenerative Medicine, Karolinska Institutet and Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Duncan B Sparrow
- Department of Physiology, Anatomy and Genetics, BHF Centre of Research Excellence, University of Oxford, Oxford, OX1 3PT, UK
| | - Adrian L Harris
- Department of Oncology, Molecular Oncology Laboratories, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Tariq Enver
- Department of Cancer Biology, UCL Cancer Institute, University College London, London, WC1E 6DD, UK; Division of Molecular Medicine and Gene Therapy, Lund University, Lund, 22184, Sweden
| | - Marella F T R de Bruijn
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DS, UK.
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16
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Li H, Luo Q, Shan W, Cai S, Tie R, Xu Y, Lin Y, Qian P, Huang H. Biomechanical cues as master regulators of hematopoietic stem cell fate. Cell Mol Life Sci 2021; 78:5881-5902. [PMID: 34232331 PMCID: PMC8316214 DOI: 10.1007/s00018-021-03882-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 06/02/2021] [Accepted: 06/15/2021] [Indexed: 01/09/2023]
Abstract
Hematopoietic stem cells (HSCs) perceive both soluble signals and biomechanical inputs from their microenvironment and cells themselves. Emerging as critical regulators of the blood program, biomechanical cues such as extracellular matrix stiffness, fluid mechanical stress, confined adhesiveness, and cell-intrinsic forces modulate multiple capacities of HSCs through mechanotransduction. In recent years, research has furthered the scientific community's perception of mechano-based signaling networks in the regulation of several cellular processes. However, the underlying molecular details of the biomechanical regulatory paradigm in HSCs remain poorly elucidated and researchers are still lacking in the ability to produce bona fide HSCs ex vivo for clinical use. This review presents an overview of the mechanical control of both embryonic and adult HSCs, discusses some recent insights into the mechanisms of mechanosensing and mechanotransduction, and highlights the application of mechanical cues aiming at HSC expansion or differentiation.
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Affiliation(s)
- Honghu Li
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Qian Luo
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Wei Shan
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Shuyang Cai
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Ruxiu Tie
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Yulin Xu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Yu Lin
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China
| | - Pengxu Qian
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Center of Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, 310012, China.
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China.
| | - He Huang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Zhejiang Laboratory for Systems & Precision Medicine, Zhejiang University Medical Center, Hangzhou, 310012, Zhejiang, People's Republic of China.
- Center of Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, 310012, China.
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17
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Chen D, Schwartz MA, Simons M. Developmental Perspectives on Arterial Fate Specification. Front Cell Dev Biol 2021; 9:691335. [PMID: 34249941 PMCID: PMC8269928 DOI: 10.3389/fcell.2021.691335] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 05/18/2021] [Indexed: 12/18/2022] Open
Abstract
Blood vessel acquisition of arterial or venous fate is an adaptive phenomenon in response to increasing blood circulation during vascular morphogenesis. The past two decades of effort in this field led to development of a widely accepted paradigm of molecular regulators centering on VEGF and Notch signaling. More recent findings focused on shear stress-induced cell cycle arrest as a prerequisite for arterial specification substantially modify this traditional understanding. This review aims to summarize key molecular mechanisms that work in concert to drive the acquisition of arterial fate in two distinct developmental settings of vascular morphogenesis: de novo vasculogenesis of the dorsal aorta and postnatal retinal angiogenesis. We will also discuss the questions and conceptual controversies that potentially point to novel directions of investigation and possible clinical relevance.
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Affiliation(s)
- Dongying Chen
- Yale Cardiovascular Research Center, Departments of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
| | - Martin A. Schwartz
- Yale Cardiovascular Research Center, Departments of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT, United States
- Department of Biomedical Engineering, Yale University, New Haven, CT, United States
| | - Michael Simons
- Yale Cardiovascular Research Center, Departments of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT, United States
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18
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Sreejit G, Fleetwood AJ, Murphy AJ, Nagareddy PR. Origins and diversity of macrophages in health and disease. Clin Transl Immunology 2020; 9:e1222. [PMID: 33363732 PMCID: PMC7750014 DOI: 10.1002/cti2.1222] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 12/14/2022] Open
Abstract
Macrophages are the first immune cells in the developing embryo and have a central role in organ development, homeostasis, immunity and repair. Over the last century, our understanding of these cells has evolved from being thought of as simple phagocytic cells to master regulators involved in governing a myriad of cellular processes. A better appreciation of macrophage biology has been matched with a clearer understanding of their diverse origins and the flexibility of their metabolic and transcriptional machinery. The understanding of the classical mononuclear phagocyte system in its original form has now been expanded to include the embryonic origin of tissue-resident macrophages. A better knowledge of the intrinsic similarities and differences between macrophages of embryonic or monocyte origin has highlighted the importance of ontogeny in macrophage dysfunction in disease. In this review, we provide an update on origin and classification of tissue macrophages, the mechanisms of macrophage specialisation and their role in health and disease. The importance of the macrophage niche in providing trophic factors and a specialised environment for macrophage differentiation and specialisation is also discussed.
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Affiliation(s)
- Gopalkrishna Sreejit
- Division of Cardiac SurgeryDepartment of SurgeryThe Ohio State University Wexner Medical CenterColumbusOHUSA
| | - Andrew J Fleetwood
- Division of ImmunometabolismBaker Heart and Diabetes InstituteMelbourneVICAustralia
| | - Andrew J Murphy
- Division of ImmunometabolismBaker Heart and Diabetes InstituteMelbourneVICAustralia
| | - Prabhakara R Nagareddy
- Division of Cardiac SurgeryDepartment of SurgeryThe Ohio State University Wexner Medical CenterColumbusOHUSA
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19
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Cellular Basis of Embryonic Hematopoiesis and Its Implications in Prenatal Erythropoiesis. Int J Mol Sci 2020; 21:ijms21249346. [PMID: 33302450 PMCID: PMC7763178 DOI: 10.3390/ijms21249346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 01/02/2023] Open
Abstract
Primitive erythrocytes are the first hematopoietic cells observed during ontogeny and are produced specifically in the yolk sac. Primitive erythrocytes express distinct hemoglobins compared with adult erythrocytes and circulate in the blood in the nucleated form. Hematopoietic stem cells produce adult-type (so-called definitive) erythrocytes. However, hematopoietic stem cells do not appear until the late embryonic/early fetal stage. Recent studies have shown that diverse types of hematopoietic progenitors are present in the yolk sac as well as primitive erythroblasts. Multipotent hematopoietic progenitors that arose in the yolk sac before hematopoietic stem cells emerged likely fill the gap between primitive erythropoiesis and hematopoietic stem-cell-originated definitive erythropoiesis and hematopoiesis. In this review, we discuss the cellular origin of primitive erythropoiesis in the yolk sac and definitive hematopoiesis in the fetal liver. We also describe mechanisms for developmental switches that occur during embryonic and fetal erythropoiesis and hematopoiesis, particularly focusing on recent studies performed in mice.
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20
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Demirci S, Leonard A, Tisdale JF. Hematopoietic stem cells from pluripotent stem cells: Clinical potential, challenges, and future perspectives. Stem Cells Transl Med 2020; 9:1549-1557. [PMID: 32725882 PMCID: PMC7695636 DOI: 10.1002/sctm.20-0247] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/01/2020] [Accepted: 07/08/2020] [Indexed: 12/11/2022] Open
Abstract
The generation of hematopoietic stem cells (HSCs) from induced pluripotent stem cells (iPSCs) is an active and promising area of research; however, generating engraftable HSCs remains a major obstacle. Ex vivo HSC derivation from renewable sources such as iPSCs offers an experimental tool for studying developmental hematopoiesis, disease modeling, and drug discovery, and yields tremendous therapeutic potential for malignant and nonmalignant hematological disorders. Although initial attempts mostly recapitulated yolk sac primitive/definitive hematopoiesis with inability to engraft, recent advances suggest the feasibility of engraftable HSC derivation from iPSCs utilizing ectopic transcription factor expression. Strategic development for de novo HSC generation includes further investigations of HSC ontogeny, and elucidation of critical signaling pathways, epigenetic modulations, HSC and iPSC microenvironment, and cell-cell interactions that contribute to stem cell biology and function.
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Affiliation(s)
- Selami Demirci
- Cellular and Molecular Therapeutics BranchNational Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH)BethesdaMarylandUSA
| | - Alexis Leonard
- Cellular and Molecular Therapeutics BranchNational Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH)BethesdaMarylandUSA
| | - John F. Tisdale
- Cellular and Molecular Therapeutics BranchNational Heart Lung and Blood Institutes (NHLBI), National Institutes of Health (NIH)BethesdaMarylandUSA
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21
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Zeevaert K, Elsafi Mabrouk MH, Wagner W, Goetzke R. Cell Mechanics in Embryoid Bodies. Cells 2020; 9:E2270. [PMID: 33050550 PMCID: PMC7599659 DOI: 10.3390/cells9102270] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/06/2020] [Accepted: 10/09/2020] [Indexed: 12/14/2022] Open
Abstract
Embryoid bodies (EBs) resemble self-organizing aggregates of pluripotent stem cells that recapitulate some aspects of early embryogenesis. Within few days, the cells undergo a transition from rather homogeneous epithelial-like pluripotent stem cell colonies into a three-dimensional organization of various cell types with multifaceted cell-cell interactions and lumen formation-a process associated with repetitive epithelial-mesenchymal transitions. In the last few years, culture methods have further evolved to better control EB size, growth, cellular composition, and organization-e.g., by the addition of morphogens or different extracellular matrix molecules. There is a growing perception that the mechanical properties, cell mechanics, and cell signaling during EB development are also influenced by physical cues to better guide lineage specification; substrate elasticity and topography are relevant, as well as shear stress and mechanical strain. Epithelial structures outside and inside EBs support the integrity of the cell aggregates and counteract mechanical stress. Furthermore, hydrogels can be used to better control the organization and lineage-specific differentiation of EBs. In this review, we summarize how EB formation is accompanied by a variety of biomechanical parameters that need to be considered for the directed and reproducible self-organization of early cell fate decisions.
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Affiliation(s)
- Kira Zeevaert
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, 52074 Aachen, Germany; (K.Z.); (M.H.E.M.)
- Institute for Biomedical Engineering–Cell Biology, RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Mohamed H. Elsafi Mabrouk
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, 52074 Aachen, Germany; (K.Z.); (M.H.E.M.)
- Institute for Biomedical Engineering–Cell Biology, RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Wolfgang Wagner
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, 52074 Aachen, Germany; (K.Z.); (M.H.E.M.)
- Institute for Biomedical Engineering–Cell Biology, RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Roman Goetzke
- Helmholtz-Institute for Biomedical Engineering, Stem Cell Biology and Cellular Engineering, RWTH Aachen University Medical School, 52074 Aachen, Germany; (K.Z.); (M.H.E.M.)
- Institute for Biomedical Engineering–Cell Biology, RWTH Aachen University Medical School, 52074 Aachen, Germany
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22
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Marchal GA, Verkerk AO, Mohan RA, Wolswinkel R, Boukens BJD, Remme CA. The sodium channel Na V 1.5 impacts on early murine embryonic cardiac development, structure and function in a non-electrogenic manner. Acta Physiol (Oxf) 2020; 230:e13493. [PMID: 32386467 PMCID: PMC7539970 DOI: 10.1111/apha.13493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/15/2020] [Accepted: 05/01/2020] [Indexed: 12/19/2022]
Abstract
AIM The voltage-gated sodium channel NaV 1.5, encoded by SCN5A, is essential for cardiac excitability and ensures proper electrical conduction. Early embryonic death has been observed in several murine models carrying homozygous Scn5amutations. We investigated when sodium current (INa ) becomes functionally relevant in the murine embryonic heart and how Scn5a/NaV 1.5 dysfunction impacts on cardiac development. METHODS Involvement of NaV 1.5-generated INa in murine cardiac electrical function was assessed by optical mapping in wild type (WT) embryos (embryonic day (E)9.5 and E10.5) in the absence and presence of the sodium channel blocker tetrodotoxin (30 µmol/L). INa was assessed by patch-clamp analysis in cardiomyocytes isolated from WT embryos (E9.5-17.5). In addition, cardiac morphology and electrical function was assessed in Scn5a-1798insD-/- embryos (E9.5-10.5) and their WT littermates. RESULTS In WT embryos, tetrodotoxin did not affect cardiac activation at E9.5, but slowed activation at E10.5. Accordingly, patch-clamp measurements revealed that INa was virtually absent at E9.5 but robustly present at E10.5. Scn5a-1798insD-/- embryos died in utero around E10.5, displaying severely affected cardiac activation and morphology. Strikingly, altered ventricular activation was observed in Scn5a-1798insD-/- E9.5 embryos before the onset of INa , in addition to reduced cardiac tissue volume compared to WT littermates. CONCLUSION We here demonstrate that NaV 1.5 is involved in cardiac electrical function from E10.5 onwards. Scn5a-1798insD-/- embryos displayed cardiac structural abnormalities at E9.5, indicating that NaV 1.5 dysfunction impacts on embryonic cardiac development in a non-electrogenic manner. These findings are potentially relevant for understanding structural defects observed in relation to NaV 1.5 dysfunction.
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Affiliation(s)
- Gerard A. Marchal
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Arie O. Verkerk
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
- Department of Medical Biology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Rajiv A. Mohan
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
- Department of Medical Biology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Rianne Wolswinkel
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Bastiaan J. D. Boukens
- Department of Medical Biology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
| | - Carol Ann Remme
- Department of Experimental Cardiology Amsterdam UMC (location Academic Medical Center) Amsterdam the Netherlands
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23
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Tabibian A, Ghaffari S, Vargas DA, Van Oosterwyck H, Jones EAV. Simulating flow induced migration in vascular remodelling. PLoS Comput Biol 2020; 16:e1007874. [PMID: 32822340 PMCID: PMC7478591 DOI: 10.1371/journal.pcbi.1007874] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 09/08/2020] [Accepted: 07/17/2020] [Indexed: 12/20/2022] Open
Abstract
Shear stress induces directed endothelial cell (EC) migration in blood vessels leading to vessel diameter increase and induction of vascular maturation. Other factors, such as EC elongation and interaction between ECs and non-vascular areas are also important. Computational models have previously been used to study collective cell migration. These models can be used to predict EC migration and its effect on vascular remodelling during embryogenesis. We combined live time-lapse imaging of the remodelling vasculature of the quail embryo yolk sac with flow quantification using a combination of micro-Particle Image Velocimetry and computational fluid dynamics. We then used the flow and remodelling data to inform a model of EC migration during remodelling. To obtain the relation between shear stress and velocity in vitro for EC cells, we developed a flow chamber to assess how confluent sheets of ECs migrate in response to shear stress. Using these data as an input, we developed a multiphase, self-propelled particles (SPP) model where individual agents are driven to migrate based on the level of shear stress while maintaining appropriate spatial relationship to nearby agents. These agents elongate, interact with each other, and with avascular agents at each time-step of the model. We compared predicted vascular shape to real vascular shape after 4 hours from our time-lapse movies and performed sensitivity analysis on the various model parameters. Our model shows that shear stress has the largest effect on the remodelling process. Importantly, however, elongation played an especially important part in remodelling. This model provides a powerful tool to study the input of different biological processes on remodelling. Shear stress is known to play a leading role in endothelial cell (EC) migration and hence, vascular remodelling. Vascular remodelling is, however, more complicated than only EC migration. To achieve a better understanding of this process, we developed a computational model in which, shear stress mediated EC migration has the leading role and other factors, such as avascular regions and EC elongation, are also accounted for. We have tested this model for different vessel shapes during remodelling and could study the role that each of these factors play in remodelling. This model gives us the possibility of addition of other factors such as biochemical signals and angiogenesis which will help us in the study of vascular remodelling in both development and disease.
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Affiliation(s)
- Ashkan Tabibian
- Centre for Molecular and Vascular Biology, Department of Cardiovascular Sciences, KU Leuven, Belgium
| | - Siavash Ghaffari
- Keenan Research Centre for Biomedical Science, Saint Michael’s Hospital, Toronto, Canada
| | - Diego A. Vargas
- Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
| | - Hans Van Oosterwyck
- Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
| | - Elizabeth A. V. Jones
- Centre for Molecular and Vascular Biology, Department of Cardiovascular Sciences, KU Leuven, Belgium
- * E-mail:
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24
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Ghosh AK. p300 in Cardiac Development and Accelerated Cardiac Aging. Aging Dis 2020; 11:916-926. [PMID: 32765954 PMCID: PMC7390535 DOI: 10.14336/ad.2020.0401] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 04/01/2020] [Indexed: 12/15/2022] Open
Abstract
The heart is the first functional organ that develops during embryonic development. While a heartbeat indicates life, cessation of a heartbeat signals the end of life. Heart disease, due either to congenital defects or to acquired dysfunctions in adulthood, remains the leading cause of death worldwide. Epigenetics plays a key role in both embryonic heart development and heart disease in adults. Stress-induced vascular injury activates pathways involved in pathogenesis of accelerated cardiac aging that includes cellular dysfunction, pathological cardiac hypertrophy, diabetic cardiomyopathy, cardiac matrix remodeling, cardiac dysfunction and heart failure. Acetyltransferase p300 (p300), a major epigenetic regulator, plays a pivotal role in heart development during embryogenesis, as deficiency or abnormal expression of p300 leads to embryonic death at early gestation periods due to deformation of the heart and neural tube. Acetyltransferase p300 controls heart development through histone acetylation-mediated chromatin remodeling and transcriptional regulation of genes required for cardiac development. In adult hearts, p300 is differentially expressed in different chambers and epigenetically controls cardiac gene expression. Deregulation of p300, in response to prohypertrophic and profibrogenic stress signals, is associated with increased recruitment of p300 to several genes including transcription factors, increased acetylation of specific lysines in histones and transcription factors, altered chromatin organization, and increased hypertrophic and fibrogenic gene expression. Cardiac hypertrophy and myocardial fibrogenesis are common pathological manifestations of several stress-induced accelerated cardiac aging-related pathologies, including high blood pressure-induced or environmentally induced cardiac hypertrophy, myocardial infarction, diabetes-induced cardiomyopathy, and heart failure. Numerous studies using cellular and animal models clearly indicate that pharmacologic or genetic normalization of p300 activity has the potential to prevent or halt the progression of cardiac aging pathologies. Based on these preclinical studies, development of safe, non-toxic, small molecule inhibitors/epidrugs targeting p300 is an ideal approach to control accelerated cardiac aging-related deaths worldwide.
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Affiliation(s)
- Asish K Ghosh
- Feinberg Cardiovascular and Renal Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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25
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Soares-da-Silva F, Peixoto M, Cumano A, Pinto-do-Ó P. Crosstalk Between the Hepatic and Hematopoietic Systems During Embryonic Development. Front Cell Dev Biol 2020; 8:612. [PMID: 32793589 PMCID: PMC7387668 DOI: 10.3389/fcell.2020.00612] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/19/2020] [Indexed: 12/14/2022] Open
Abstract
Hematopoietic stem cells (HSCs) generated during embryonic development are able to maintain hematopoiesis for the lifetime, producing all mature blood lineages. HSC transplantation is a widely used cell therapy intervention in the treatment of hematologic, autoimmune and genetic disorders. Its use, however, is hampered by the inability to expand HSCs ex vivo, urging for a better understanding of the mechanisms regulating their physiological expansion. In the adult, HSCs reside in the bone marrow, in specific microenvironments that support stem cell maintenance and differentiation. Conversely, while developing, HSCs are transiently present in the fetal liver, the major hematopoietic site in the embryo, where they expand. Deeper insights on the dynamics of fetal liver composition along development, and on how these different cell types impact hematopoiesis, are needed. Both, the hematopoietic and hepatic fetal systems have been extensively studied, albeit independently. This review aims to explore their concurrent establishment and evaluate to what degree they may cross modulate their respective development. As insights on the molecular networks that govern physiological HSC expansion accumulate, it is foreseeable that strategies to enhance HSC proliferation will be improved.
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Affiliation(s)
- Francisca Soares-da-Silva
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Lymphocytes and Immunity Unit, Immunology Department, Pasteur Institute, Paris, France
- INSERM U1223, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Márcia Peixoto
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Lymphocytes and Immunity Unit, Immunology Department, Pasteur Institute, Paris, France
- INSERM U1223, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Ana Cumano
- Lymphocytes and Immunity Unit, Immunology Department, Pasteur Institute, Paris, France
- INSERM U1223, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Perpetua Pinto-do-Ó
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
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26
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Chin MT, Conway SJ. Role of Tafazzin in Mitochondrial Function, Development and Disease. J Dev Biol 2020; 8:jdb8020010. [PMID: 32456129 PMCID: PMC7344621 DOI: 10.3390/jdb8020010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 12/19/2022] Open
Abstract
Tafazzin, an enzyme associated with the rare inherited x-linked disorder Barth Syndrome, is a nuclear encoded mitochondrial transacylase that is highly conserved across multiple species and plays an important role in mitochondrial function. Numerous studies have elucidated the mechanisms by which Tafazzin affects mitochondrial function, but its effects on development and susceptibility to adult disease are incompletely understood. The purpose of this review is to highlight previous functional studies across a variety of model organisms, introduce recent studies that show an important role in development, and also to provide an update on the role of Tafazzin in human disease. The profound effects of Tafazzin on cardiac development and adult cardiac homeostasis will be emphasized. These studies underscore the importance of mitochondrial function in cardiac development and disease, and also introduce the concept of Tafazzin as a potential therapeutic modality.
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Affiliation(s)
- Michael T. Chin
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
- Correspondence: (M.T.C.); (S.J.C.); Tel.: +1-617-636-8776 (M.T.C.); +1-317-278-8780 (S.J.C.)
| | - Simon J. Conway
- Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Correspondence: (M.T.C.); (S.J.C.); Tel.: +1-617-636-8776 (M.T.C.); +1-317-278-8780 (S.J.C.)
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27
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Nishikawa M, Sakai Y, Yanagawa N. Design and strategy for manufacturing kidney organoids. Biodes Manuf 2020. [DOI: 10.1007/s42242-020-00060-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Shear Stress Promotes Arterial Endothelium-Oriented Differentiation of Mouse-Induced Pluripotent Stem Cells. Stem Cells Int 2019; 2019:1847098. [PMID: 31827524 PMCID: PMC6881757 DOI: 10.1155/2019/1847098] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 09/05/2019] [Accepted: 10/17/2019] [Indexed: 12/29/2022] Open
Abstract
Establishment of a functional vascular network, which is required in tissue repair and regeneration, needs large-scale production of specific arterial or venous endothelial cells (ECs) from stem cells. Previous in vitro studies by us and others revealed that shear stress induces EC differentiation of bone marrow-derived mesenchymal stem cells and embryonic stem cells. In this study, we focused on the impact of different magnitudes of shear stress on the differentiation of mouse-induced pluripotent stem cells (iPSCs) towards arterial or venous ECs. When iPSCs were exposed to shear stress (5, 10, and 15 dyne/cm2) with 50 ng/mL vascular endothelial growth factor and 10 ng/mL fibroblast growth factor, the expression levels of the general EC markers and the arterial markers increased, and the stress amplitude of 10 dyne/cm2 could be regarded as a proper promoter, whereas the venous and lymphatic markers had little or no expression. Further, shear stress caused cells to align parallel to the direction of the flow, induced cells forming functional tubes, and increased the secretion of nitric oxide. In addition, Notch1 was significantly upregulated, and the Notch ligand Delta-like 4 was activated in response to shear stress, while inhibition of Notch signaling by DAPT remarkably abolished the shear stress-induced arterial epithelium differentiation. Taken together, our results indicate that exposure to appropriate shear stress facilitated the differentiation of mouse iPSCs towards arterial ECs via Notch signaling pathways, which have potential applications for both disease modeling and regenerative medicine.
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29
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Mass E. Delineating the origins, developmental programs and homeostatic functions of tissue-resident macrophages. Int Immunol 2019; 30:493-501. [PMID: 29986024 DOI: 10.1093/intimm/dxy044] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 07/04/2018] [Indexed: 12/22/2022] Open
Abstract
A literature covering 150 years of research indicates that macrophages are a diverse family of professional phagocytes that continuously explore their environment, recognize and scavenge pathogens, unfit cells, cell debris as well as metabolites, and produce a large range of bioactive molecules and growth factors. A new paradigm suggests that most tissue-resident macrophages originate from fetal precursors that colonize developing organs and self-maintain independently of bone marrow-derived cells throughout life. The differentiation of these precursors is driven by a core macrophage transcriptional program and immediately followed by their specification through expression of tissue-specific transcriptional regulators early during embryogenesis. Despite our increasing understanding of ontogeny and genetic programs that shape differentiation processes and functions of macrophages, the precise developmental trajectories of tissue-resident macrophages remain undefined. Here, I review current models of fetal hematopoietic waves, possible routes of macrophage development and their roles during homeostasis. Further, transgenic mouse models are discussed providing a toolset to study the developmentally and functionally distinct arms of the phagocyte system in vivo.
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Affiliation(s)
- Elvira Mass
- Developmental Biology of the Innate Immune System, LIMES-Institute, University of Bonn, Bonn, Germany
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30
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Hirono K, Saito K, Munkhsaikhan U, Xu F, Wang C, Lu L, Ichida F, Towbin JA, Purevjav E. Familial Left Ventricular Non-Compaction Is Associated With a Rare p.V407I Variant in Bone Morphogenetic Protein 10. Circ J 2019; 83:1737-1746. [PMID: 31243186 DOI: 10.1253/circj.cj-19-0116] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Left ventricular non-compaction (LVNC) is a heritable cardiomyopathy characterized by hypertrabeculation, inter-trabecular recesses and thin compact myocardium, but the genetic basis and mechanisms remain unclear. This study identified novel LVNC-associated mutations inNOTCH-dependent genes and investigated their mutational effects.Methods and Results:High-resolution melting screening was performed in 230 individuals with LVNC, followed by whole exome and Sanger sequencing of available family members. Dimerization of bone morphogenetic protein 10 (BMP10) and its binding to BMP receptors (BMPRs) were evaluated. Cellular differentiation, proliferation and tolerance to mechanical stretch were assessed in H9C2 cardiomyoblasts, expressing wild-type (WT) or mutant BMP10 delivered by adenoviral vectors. Rare variants, p.W143*-NRG1and p.V407I-BMP10, were identified in 2 unrelated probands and their affected family members. Although dimerization of mutant V407I-BMP10 was preserved like WT-BMP10, V407I-BMP10 pulled BMPR1a and BMPR2 receptors more weakly compared with WT-BMP10. On comparative gene expression and siRNA analysis, expressed BMPR1a and BMPR2 receptors were responsive to BMP10 treatment in H9C2 cardiomyoblasts. Expression of V407I-BMP10 resulted in a significantly lower rate of proliferation in H9C2 cells compared with WT-BMP10. Cyclic stretch resulted in destruction and death of V407I-BMP10 cells. CONCLUSIONS The W143*-NRG1and V470I-BMP10variants are associated with LVNC. Impaired BMPR-binding ability, perturbed proliferation and differentiation processes and intolerance to stretch in V407I-BMP10 mutant cardiomyoblasts may underlie myocardial non-compaction.
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Affiliation(s)
- Keiichi Hirono
- Department of Pediatrics, Graduate School of Medicine, University of Toyama.,The Heart Institute, Department of Pediatrics, Cincinnati Children's Hospital Medical Center
| | - Kazuyoshi Saito
- Department of Pediatrics, Graduate School of Medicine, University of Toyama.,The Heart Institute, Department of Pediatrics, Cincinnati Children's Hospital Medical Center.,The Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center
| | - Undral Munkhsaikhan
- The Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center.,Children's Foundation Research Institute, Le Bonheur Children's Hospital Memphis
| | - Fuyi Xu
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center
| | - Ce Wang
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Lu Lu
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center
| | - Fukiko Ichida
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Jeffrey A Towbin
- The Heart Institute, Department of Pediatrics, Cincinnati Children's Hospital Medical Center.,The Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center.,Children's Foundation Research Institute, Le Bonheur Children's Hospital Memphis.,Pediatric Cardiology, St. Jude Children's Research Hospital
| | - Enkhsaikhan Purevjav
- The Heart Institute, Department of Pediatrics, Cincinnati Children's Hospital Medical Center.,The Heart Institute, Department of Pediatrics, University of Tennessee Health Science Center
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31
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Ritchie HE, Telenius C, Gustaffson E, Webster WS. The effects of nifedipine and ivabradine on the functionality of the early rat embryonic heart. Are these drugs a risk in early human pregnancy? Birth Defects Res 2019; 111:281-288. [PMID: 30653849 DOI: 10.1002/bdr2.1457] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/10/2018] [Accepted: 12/28/2018] [Indexed: 01/13/2023]
Abstract
BACKGROUND When the human heart begins its earliest contractions from day 21, it lacks a functional autonomic nerve supply. Instead, contractions are generated by regular calcium transients later augmented by the funny current (If ) produced by sinoatrial-like cells. This study examined effects of blocking these currents in the early rat embryonic heart. METHODS Rat embryos were incubated in vitro with either the calcium channel blocker nifedipine and/or the funny current (If ) blocker ivabradine for 1 hr to examine the effects of these drugs on the activity of the embryonic heart. RESULTS On gestational day (GD) 10, nifedipine (0.45-1.8 μM) caused asystole at high concentrations (8/10 embryos at 1.8 μM and 3/10 embryos at 0.9 μM) and markedly increased embryonic heart rate (EHR) in all surviving embryos but likely reduced blood flow due to weak contractions. Ivabradine (1.5 μM) caused a 29% reduction in EHR in GD 10 embryos and a greater than 50% reduction in EHR for GD 11-14 embryos. Combined exposure to both nifedipine and ivabradine resulted in an additive effect. The increased EHR due to nifedipine was reduced by the ivabradine. CONCLUSION The results suggest that exposure to nifedipine in human pregnancy 3-4 weeks postfertilization may cause a direct effect on the embryonic heart resulting in reduced blood flow leading to abnormal heart and/or blood vessel development and/or embryonic death. Accidental exposure to ivabradine in the organogenic period would be expected to cause embryonic bradycardia, hypoxia, malformations, and embryonic death. This drug is currently contraindicated in pregnancy.
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Affiliation(s)
- Helen E Ritchie
- Discipline of Biomedical Sciences, Sydney School of Medical Science, The University of Sydney, Sydney, New South Wales, Australia
| | - Carolina Telenius
- Discipline of Anatomy and Histology, Sydney School of Medical Science, The University of Sydney, Sydney, New South Wales, Australia
| | - Elin Gustaffson
- Discipline of Anatomy and Histology, Sydney School of Medical Science, The University of Sydney, Sydney, New South Wales, Australia
| | - William S Webster
- Discipline of Anatomy and Histology, Sydney School of Medical Science, The University of Sydney, Sydney, New South Wales, Australia
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Murine hematopoietic stem cell activity is derived from pre-circulation embryos but not yolk sacs. Nat Commun 2018; 9:5405. [PMID: 30573729 PMCID: PMC6302089 DOI: 10.1038/s41467-018-07769-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 11/23/2018] [Indexed: 11/08/2022] Open
Abstract
The embryonic site of definitive hematopoietic stem cell (dHSC) origination has been debated for decades. Although an intra-embryonic origin is well supported, the yolk sac (YS) contribution to adult hematopoiesis remains controversial. The same developmental origin makes it difficult to identify specific markers that discern between an intraembryonic versus YS-origin using a lineage trace approach. Additionally, the highly migratory nature of blood cells and the inability of pre-circulatory embryonic cells (i.e., 5-7 somite pairs (sp)) to robustly engraft in transplantation, even after culture, has precluded scientists from properly answering these questions. Here we report robust, multi-lineage and serially transplantable dHSC activity from cultured 2-7sp murine embryonic explants (Em-Ex). dHSC are undetectable in 2-7sp YS explants. Additionally, the engraftment from Em-Ex is confined to an emerging CD31+CD45+c-Kit+CD41- population. In sum, our work supports a model in which the embryo, not the YS, is the major source of lifelong definitive hematopoiesis.
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33
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Ghanem LR, Kromer A, Silverman IM, Ji X, Gazzara M, Nguyen N, Aguilar G, Martinelli M, Barash Y, Liebhaber SA. Poly(C)-Binding Protein Pcbp2 Enables Differentiation of Definitive Erythropoiesis by Directing Functional Splicing of the Runx1 Transcript. Mol Cell Biol 2018; 38:e00175-18. [PMID: 29866654 PMCID: PMC6066754 DOI: 10.1128/mcb.00175-18] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/10/2018] [Accepted: 05/26/2018] [Indexed: 12/14/2022] Open
Abstract
Formation of the mammalian hematopoietic system is under a complex set of developmental controls. Here, we report that mouse embryos lacking the KH domain poly(C) binding protein, Pcbp2, are selectively deficient in the definitive erythroid lineage. Compared to wild-type controls, transcript splicing analysis of the Pcbp2-/- embryonic liver reveals accentuated exclusion of an exon (exon 6) that encodes a highly conserved transcriptional control segment of the hematopoietic master regulator, Runx1. Embryos rendered homozygous for a Runx1 locus lacking this cassette exon (Runx1ΔE6) effectively phenocopy the loss of the definitive erythroid lineage in Pcbp2-/- embryos. These data support a model in which enhancement of Runx1 cassette exon 6 inclusion by Pcbp2 serves a critical role in development of hematopoietic progenitors and constitutes a critical step in the developmental pathway of the definitive erythropoietic lineage.
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Affiliation(s)
- Louis R Ghanem
- Gastroenterology, Hepatology and Nutrition Division, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Andrew Kromer
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ian M Silverman
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Xinjun Ji
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Matthew Gazzara
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nhu Nguyen
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Gabrielle Aguilar
- Gastroenterology, Hepatology and Nutrition Division, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Massimo Martinelli
- Gastroenterology, Hepatology and Nutrition Division, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Translational Medical Science, Section of Pediatrics, University of Naples Federico II, Naples, Italy
| | - Yoseph Barash
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Stephen A Liebhaber
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Abstract
The yolk sac is the first observed site of hematopoiesis during mouse ontogeny. Primitive erythroid cells are the most well-recognized cell lineages produced from this tissue. In addition to primitive erythroid cells, several types of hematopoietic cells are present, including multipotent hematopoietic progenitors. Yolk sac-derived blood cells constitute a transient wave of embryonic and fetal hematopoiesis. However, recent studies have demonstrated that some macrophage and B cell lineages derived from the early yolk sac may persist to adulthood. This review discusses the cellular basis of mouse yolk sac hematopoiesis and its contributions to embryonic and adult hematopoietic systems.
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Affiliation(s)
- Toshiyuki Yamane
- Department of Stem Cell and Developmental Biology, Mie University Graduate School of Medicine, Tsu, Japan
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Raghunathan R, Wu C, Singh M, Liu CH, Miranda RC, Larin KV. Evaluating the effects of maternal alcohol consumption on murine fetal brain vasculature using optical coherence tomography. JOURNAL OF BIOPHOTONICS 2018; 11:e201700238. [PMID: 29292845 PMCID: PMC6292438 DOI: 10.1002/jbio.201700238] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 12/28/2017] [Indexed: 05/09/2023]
Abstract
Prenatal alcohol exposure (PAE) can result in a range of anomalies including brain and behavioral dysfunctions, collectively termed fetal alcohol spectrum disorder. PAE during the 1st and 2nd trimester is common, and research in animal models has documented significant neural developmental deficits associated with PAE during this period. However, little is known about the immediate effects of PAE on fetal brain vasculature. In this study, we used in utero speckle variance optical coherence tomography, a high spatial- and temporal-resolution imaging modality, to evaluate dynamic changes in microvasculature of the 2nd trimester equivalent murine fetal brain, minutes after binge-like maternal alcohol exposure. Acute binge-like PAE resulted in a rapid (<1 hour) and significant decrease (P < .001) in vessel diameter as compared to the sham group. The data show that a single binge-like maternal alcohol exposure resulted in swift vasoconstriction in fetal brain vessels during the critical period of neurogenesis.
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Affiliation(s)
- Raksha Raghunathan
- Department of Biomedical Engineering, University of Houston, Houston, Texas
| | - Chen Wu
- Department of Biomedical Engineering, University of Houston, Houston, Texas
| | - Manmohan Singh
- Department of Biomedical Engineering, University of Houston, Houston, Texas
| | - Chih-Hao Liu
- Department of Biomedical Engineering, University of Houston, Houston, Texas
| | - Rajesh C. Miranda
- Department of Neuroscience and Experimental Therapeutics, Texas A&M Health Science Center, College of Medicine, College Station, Texas
| | - Kirill V. Larin
- Department of Biomedical Engineering, University of Houston, Houston, Texas
- Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, Russia
- Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, Texas
- Correspondence: Kirill V. Larin, Department of Biomedical Engineering, University of Houston, Houston, TX.
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36
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Peavey MC, Reynolds CL, Szwarc MM, Gibbons WE, Valdes CT, DeMayo FJ, Lydon JP. A Novel Use of Three-dimensional High-frequency Ultrasonography for Early Pregnancy Characterization in the Mouse. J Vis Exp 2017. [PMID: 29155779 DOI: 10.3791/56207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
High-frequency ultrasonography (HFUS) is a common method to non-invasively monitor the real-time development of the human fetus in utero. The mouse is routinely used as an in vivo model to study embryo implantation and pregnancy progression. Unfortunately, such murine studies require pregnancy interruption to enable follow-up phenotypic analysis. To address this issue, we used three-dimensional (3-D) reconstruction of HFUS imaging data for early detection and characterization of murine embryo implantation sites and their individual developmental progression in utero. Combining HFUS imaging with 3-D reconstruction and modeling, we were able to accurately quantify embryo implantation site number as well as monitor developmental progression in pregnant C57BL6J/129S mice from 5.5 days post coitus (d.p.c.) through to 9.5 d.p.c. with the use of a transducer. Measurements included: number, location, and volume of implantation sites as well as inter-implantation site spacing; embryo viability was assessed by cardiac activity monitoring. In the immediate post-implantation period (5.5 to 8.5 d.p.c.), 3-D reconstruction of the gravid uterus in both mesh and solid overlay format enabled visual representation of the developing pregnancies within each uterine horn. As genetically engineered mice continue to be used to characterize female reproductive phenotypes derived from uterine dysfunction, this method offers a new approach to detect, quantify, and characterize early implantation events in vivo. This novel use of 3-D HFUS imaging demonstrates the ability to successfully detect, visualize, and characterize embryo-implantation sites during early murine pregnancy in a non-invasive manner. The technology offers a significant improvement over current methods, which rely on the interruption of pregnancies for gross tissue and histopathologic characterization. Here we use a video and text format to describe how to successfully perform ultrasounds of early murine pregnancy to generate reliable and reproducible data with reconstruction of the uterine form in mesh and solid 3-D images.
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Affiliation(s)
- Mary C Peavey
- Devision of Repreoductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Baylor College of Medicine; Department of Molecular and Cellular Biology, Baylor College of Medicine
| | | | | | - William E Gibbons
- Devision of Repreoductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Baylor College of Medicine
| | - Cecilia T Valdes
- Devision of Repreoductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Baylor College of Medicine
| | - Francesco J DeMayo
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences;
| | - John P Lydon
- Department of Molecular and Cellular Biology, Baylor College of Medicine;
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37
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Shen EM, McCloskey KE. Development of Mural Cells: From In Vivo Understanding to In Vitro Recapitulation. Stem Cells Dev 2017; 26:1020-1041. [DOI: 10.1089/scd.2017.0020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Edwin M. Shen
- Graduate Program in Biological Engineering and Small-scale Technologies
| | - Kara E. McCloskey
- Graduate Program in Biological Engineering and Small-scale Technologies
- School of Engineering, University of California, Merced, Merced, California
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38
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Palis J. Interaction of the Macrophage and Primitive Erythroid Lineages in the Mammalian Embryo. Front Immunol 2017; 7:669. [PMID: 28119687 PMCID: PMC5220011 DOI: 10.3389/fimmu.2016.00669] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 12/19/2016] [Indexed: 01/01/2023] Open
Abstract
Two distinct forms of erythropoiesis, primitive and definitive, are found in mammals. Definitive erythroid precursors in the bone marrow mature in the physical context of macrophage cells in "erythroblastic islands." In the murine embryo, overlapping waves of primitive hematopoietic progenitors and definitive erythro-myeloid progenitors, each containing macrophage potential, arise in the yolk sac prior to the emergence of hematopoietic stem cells. Primitive erythroblasts mature in the bloodstream as a semi-synchronous cohort while macrophage cells derived from the yolk sac seed the fetal liver. Late-stage primitive erythroblasts associate with macrophage cells in erythroblastic islands in the fetal liver, indicating that primitive erythroblasts can interact with macrophage cells extravascularly. Like definitive erythroblasts, primitive erythroblasts physically associate with macrophages through α4 integrin-vascular adhesion molecule 1-mediated interactions and α4 integrin is redistributed onto the plasma membrane of primitive pyrenocytes. Both in vitro and in vivo studies indicate that fetal liver macrophage cells engulf primitive pyrenocytes. Taken together, these studies indicate that several aspects of the interplay between macrophage cells and maturing erythroid precursor cells are conserved during the ontogeny of mammalian organisms.
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Affiliation(s)
- James Palis
- Department of Pediatrics, Center for Pediatric Biomedical Research, University of Rochester Medical Center, Rochester, NY, USA
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39
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Peavey MC, Reynolds CL, Szwarc MM, Gibbons WE, Valdes CT, DeMayo FJ, Lydon JP. Three-Dimensional High-Frequency Ultrasonography for Early Detection and Characterization of Embryo Implantation Site Development in the Mouse. PLoS One 2017; 12:e0169312. [PMID: 28046063 PMCID: PMC5207679 DOI: 10.1371/journal.pone.0169312] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 12/14/2016] [Indexed: 12/14/2022] Open
Abstract
Ultrasonography is a powerful tool to non-invasively monitor in real time the development of the human fetus in utero. Although genetically engineered mice have served as valuable in vivo models to study both embryo implantation and pregnancy progression, such studies usually require sacrifice of parous mice for subsequent phenotypic analysis. To address this issue, we used three-dimensional (3-D) reconstruction in silico of high-frequency ultrasound (HFUS) imaging data for early detection and characterization of murine embryo implantation sites and their development in utero. With HFUS imaging followed by 3-D reconstruction, we were able to precisely quantify embryo implantation site number and embryonic developmental progression in pregnant C57BL6J/129S mice from as early as 5.5 days post coitus (d.p.c.) through to 9.5 d.p.c. using a VisualSonics Vevo 2100 (MS550S) transducer. In addition to measurements of implantation site number, location, volume and spacing, embryo viability via cardiac activity monitoring was also achieved. A total of 12 dams were imaged with HFUS with approximately 100 embryos examined per embryonic day. For the post-implantation period (5.5 to 8.5 d.p.c.), 3-D reconstruction of the gravid uterus in mesh or solid overlay format enabled visual representation in silico of implantation site location, number, spacing distances, and site volume within each uterine horn. Therefore, this short technical report describes the feasibility of using 3-D HFUS imaging for early detection and analysis of post-implantation events in the pregnant mouse with the ability to longitudinally monitor the development of these early pregnancy events in a non-invasive manner. As genetically engineered mice continue to be used to characterize female reproductive phenotypes, we believe this reliable and non-invasive method to detect, quantify, and characterize early implantation events will prove to be an invaluable investigative tool for the study of female infertility and subfertility phenotypes based on a defective uterus.
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Affiliation(s)
- Mary C. Peavey
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States of America
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Baylor College of Medicine, Houston, Texas, United States of America
| | - Corey L. Reynolds
- Mouse Phenotyping Core, Baylor College of Medicine, Houston, Texas, United States of America
| | - Maria M. Szwarc
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States of America
| | - William E. Gibbons
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Baylor College of Medicine, Houston, Texas, United States of America
| | - Cecilia T. Valdes
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Baylor College of Medicine, Houston, Texas, United States of America
| | - Francesco J. DeMayo
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina. United States of America
- * E-mail: (FJD); (JPL)
| | - John P. Lydon
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States of America
- * E-mail: (FJD); (JPL)
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40
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Palis J. Hematopoietic stem cell-independent hematopoiesis: emergence of erythroid, megakaryocyte, and myeloid potential in the mammalian embryo. FEBS Lett 2016; 590:3965-3974. [PMID: 27790707 DOI: 10.1002/1873-3468.12459] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 10/10/2016] [Indexed: 01/20/2023]
Abstract
Steady-state production of all circulating blood cells in the adult ultimately depends on hematopoietic stem cells (HSCs), which first arise in small numbers beginning at embryonic day (E) 10.5 in large arterial vessels of the murine embryo. However, blood cell synthesis first begins in the yolk sac beginning at E7.25 and consists of two waves of hematopoietic progenitors. The first wave consists of primitive erythroid, megakaryocyte, and macrophage progenitors that rapidly give rise to maturing blood cells of all three lineages. This 'primitive' wave of progenitors is followed by a partially overlapping wave of 'erythro-myeloid progenitors', which contain definitive erythroid, megakaryocyte, macrophage, neutrophil, and mast cell progenitors that seed the fetal liver and jump-start hematopoiesis before the engraftment and expansion of HSCs. These two waves of progenitors that arise in the yolk sac are necessary and even sufficient to sustain the survival of the mouse embryo until birth in the absence of HSCs. They provide key signals to support HSC emergence. Finally, HSC-independent hematopoiesis also provides long-lived tissue-resident macrophage populations that function in multiple adult organs.
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Affiliation(s)
- James Palis
- Department of Pediatrics, Center for Pediatric Biomedical Research, University of Rochester Medical Center, NY, USA
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41
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Critical requirement of VEGF-C in transition to fetal erythropoiesis. Blood 2016; 128:710-20. [DOI: 10.1182/blood-2015-12-687970] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 06/13/2016] [Indexed: 12/14/2022] Open
Abstract
Key Points
Vegfc is essential for mobilization, maturation, and enucleation of primitive erythroblasts. Vegfc deletion compromises liver colonization by erythro-myeloid progenitors and subsequent macrophage/erythroid expansion.
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42
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Wang S, Lakomy DS, Garcia MD, Lopez AL, Larin KV, Larina IV. Four-dimensional live imaging of hemodynamics in mammalian embryonic heart with Doppler optical coherence tomography. JOURNAL OF BIOPHOTONICS 2016; 9:837-47. [PMID: 26996292 PMCID: PMC5152918 DOI: 10.1002/jbio.201500314] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/03/2016] [Accepted: 03/01/2016] [Indexed: 05/19/2023]
Abstract
Hemodynamic analysis of the mouse embryonic heart is essential for understanding the functional aspects of early cardiogenesis and advancing the research in congenital heart defects. However, high-resolution imaging of cardiac hemodynamics in mammalian models remains challenging, primarily due to the dynamic nature and deep location of the embryonic heart. Here we report four-dimensional micro-scale imaging of blood flow in the early mouse embryonic heart, enabling time-resolved measurement and analysis of flow velocity throughout the heart tube. Our method uses Doppler optical coherence tomography in live mouse embryo culture, and employs a post-processing synchronization approach to reconstruct three-dimensional data over time at a 100 Hz volume rate. Experiments were performed on live mouse embryos at embryonic day 9.0. Our results show blood flow dynamics inside the beating heart, with the capability for quantitative flow velocity assessment in the primitive atrium, atrioventricular and bulboventricular regions, and bulbus cordis. Combined cardiodynamic and hemodynamic analysis indicates this functional imaging method can be utilized to further investigate the mechanical relationship between blood flow dynamics and cardiac wall movement, bringing new possibilities to study biomechanics in early mammalian cardiogenesis. Four-dimensional live hemodynamic imaging of the mouse embryonic heart at embryonic day 9.0 using Doppler optical coherence tomography, showing directional blood flows in the sinus venosus, primitive atrium, atrioventricular region and vitelline vein.
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Affiliation(s)
- Shang Wang
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, U.S
| | - David S Lakomy
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, U.S
| | - Monica D Garcia
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, U.S
| | - Andrew L Lopez
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, U.S
| | - Kirill V Larin
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, U.S
- Department of Biomedical Engineering, University of Houston, 3605 Cullen Blvd., 77204, Houston, TX 77204, U.S
- Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, 634050, Russia
| | - Irina V Larina
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, U.S..
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43
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Abstract
The mouse is the mammalian model of choice for investigating cardiovascular biology, given our ability to manipulate it by genetic, pharmacologic, mechanical, and environmental means. Imaging is an important approach to phenotyping both function and structure of cardiac and vascular components. This review details commonly used imaging approaches, with a focus on echocardiography and magnetic resonance imaging and brief overviews of other imaging modalities. We also briefly outline emerging imaging approaches but caution that reliability and validity data may be lacking.
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Affiliation(s)
- Colin K L Phoon
- Division of Pediatric Cardiology, Department of Pediatrics, New York University School of Medicine, New York, New York
| | - Daniel H Turnbull
- Departments of Radiology and Pathology, New York University School of Medicine, New York, New York.,Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, New York
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44
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Segregation of Central Ventricular Conduction System Lineages in Early SMA+ Cardiomyocytes Occurs Prior to Heart Tube Formation. J Cardiovasc Dev Dis 2016; 3:jcdd3010002. [PMID: 29367554 PMCID: PMC5715695 DOI: 10.3390/jcdd3010002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/11/2016] [Accepted: 01/18/2016] [Indexed: 01/21/2023] Open
Abstract
The cardiac conduction system (CCS) transmits electrical activity from the atria to the ventricles to coordinate heartbeats. Atrioventricular conduction diseases are often associated with defects in the central ventricular conduction system comprising the atrioventricular bundle (AVB) and right and left branches (BBs). Conducting and contractile working myocytes share common cardiomyogenic progenitors, however the time at which the CCS lineage becomes specified is unclear. In order to study the fate and the contribution to the CCS of cardiomyocytes during early heart tube formation, we performed a genetic lineage analysis using a Sma-CreERT2 mouse line. Lineage tracing experiments reveal a sequential contribution of early Sma expressing cardiomyocytes to different cardiac compartments, labeling at embryonic day (E) 7.5 giving rise to the interventricular septum and apical left ventricular myocardium. Early Sma expressing cardiomyocytes contribute to the AVB, BBs and left ventricular Purkinje fibers. Clonal analysis using the R26-confetti reporter mouse crossed with Sma-CreERT2 demonstrates that early Sma expressing cardiomyocytes include cells exclusively fated to give rise to the AVB. In contrast, lineage segregation is still ongoing for the BBs at E7.5. Overall this study highlights the early segregation of the central ventricular conduction system lineage within cardiomyocytes at the onset of heart tube formation.
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45
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Heinig K, Sage F, Robin C, Sperandio M. Development and trafficking function of haematopoietic stem cells and myeloid cells during fetal ontogeny. Cardiovasc Res 2015; 107:352-63. [DOI: 10.1093/cvr/cvv146] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 04/16/2015] [Indexed: 01/04/2023] Open
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46
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Kim PG, Nakano H, Das PP, Chen MJ, Rowe RG, Chou SS, Ross SJ, Sakamoto KM, Zon LI, Schlaeger TM, Orkin SH, Nakano A, Daley GQ. Flow-induced protein kinase A-CREB pathway acts via BMP signaling to promote HSC emergence. ACTA ACUST UNITED AC 2015; 212:633-48. [PMID: 25870201 PMCID: PMC4419355 DOI: 10.1084/jem.20141514] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 03/12/2015] [Indexed: 11/06/2022]
Abstract
Kim et al. identify a novel shear stress–induced pathway involving protein kinase A, CREB, and bone morphogenetic protein that regulates hematopoietic stem cell generation in the embryonic aorta. Fluid shear stress promotes the emergence of hematopoietic stem cells (HSCs) in the aorta–gonad–mesonephros (AGM) of the developing mouse embryo. We determined that the AGM is enriched for expression of targets of protein kinase A (PKA)–cAMP response element-binding protein (CREB), a pathway activated by fluid shear stress. By analyzing CREB genomic occupancy from chromatin-immunoprecipitation sequencing (ChIP-seq) data, we identified the bone morphogenetic protein (BMP) pathway as a potential regulator of CREB. By chemical modulation of the PKA–CREB and BMP pathways in isolated AGM VE-cadherin+ cells from mid-gestation embryos, we demonstrate that PKA–CREB regulates hematopoietic engraftment and clonogenicity of hematopoietic progenitors, and is dependent on secreted BMP ligands through the type I BMP receptor. Finally, we observed blunting of this signaling axis using Ncx1-null embryos, which lack a heartbeat and intravascular flow. Collectively, we have identified a novel PKA–CREB–BMP signaling pathway downstream of shear stress that regulates HSC emergence in the AGM via the endothelial-to-hematopoietic transition.
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Affiliation(s)
- Peter Geon Kim
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Haruko Nakano
- Department of Molecular Cell and Developmental Biology, Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, Jonsson Comprehensive Cancer Center, Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - Partha P Das
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Michael J Chen
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - R Grant Rowe
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Stephanie S Chou
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Samantha J Ross
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Kathleen M Sakamoto
- Division of Pediatric Hematology/Oncology, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA 94305
| | - Leonard I Zon
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Thorsten M Schlaeger
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Stuart H Orkin
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
| | - Atsushi Nakano
- Department of Molecular Cell and Developmental Biology, Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, Jonsson Comprehensive Cancer Center, Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095
| | - George Q Daley
- Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115 Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; Howard Hughes Medical Institute, Harvard Stem Cell Institute; Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute; and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115
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Wilsbacher LD, Coughlin SR. Analysis of cardiomyocyte development using immunofluorescence in embryonic mouse heart. J Vis Exp 2015:52644. [PMID: 25866997 PMCID: PMC4401388 DOI: 10.3791/52644] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
During heart development, the generation of myocardial-specific structural and functional units including sarcomeres, contractile myofibrils, intercalated discs, and costameres requires the coordinated assembly of multiple components in time and space. Disruption in assembly of these components leads to developmental heart defects. Immunofluorescent staining techniques are used commonly in cultured cardiomyocytes to probe myofibril maturation, but this ex vivo approach is limited by the extent to which myocytes will fully differentiate in culture, lack of normal in vivo mechanical inputs, and absence of endocardial cues. Application of immunofluorescence techniques to the study of developing mouse heart is desirable but more technically challenging, and methods often lack sufficient sensitivity and resolution to visualize sarcomeres in the early stages of heart development. Here, we describe a robust and reproducible method to co-immunostain multiple proteins or to co-visualize a fluorescent protein with immunofluorescent staining in the embryonic mouse heart and use this method to analyze developing myofibrils, intercalated discs, and costameres. This method can be further applied to assess cardiomyocyte structural changes caused by mutations that lead to developmental heart defects.
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Affiliation(s)
- Lisa D Wilsbacher
- Feinberg Cardiovascular Research Institute, Northwestern University; Cardiovascular Research Institute, University of California, San Francisco;
| | - Shaun R Coughlin
- Cardiovascular Research Institute, University of California, San Francisco
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Simmons O, Snider P, Wang J, Schwartz RJ, Chen Y, Conway SJ. Persistent Noggin arrests cardiomyocyte morphogenesis and results in early in utero lethality. Dev Dyn 2014; 244:457-67. [PMID: 25428115 DOI: 10.1002/dvdy.24233] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 11/13/2014] [Accepted: 11/16/2014] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Multiple bone morphogenetic protein (BMP) genes are expressed in the developing heart from the initiation to late-differentiation stages, and play pivotal roles in cardiovascular development. In this study, we investigated the requirement of BMP activity in heart development by transgenic over-expression of extracellular BMP antagonist Noggin. RESULTS Using Nkx2.5-Cre to drive lineage-restricted Noggin within cardiomyocyte progenitors, we show persistent Noggin arrests cardiac development at the linear heart stage. This is coupled with a significantly reduced cell proliferation rate, subsequent cardiomyocyte programmed cell death and reduction of downstream intracellular pSMAD1/5/8 expression. Noggin mutants exhibit reduced heartbeat which likely results in subsequent fully penetrant in utero lethality. Significantly, confocal and electron micrographic examination revealed considerably fewer contractile elements, as well as a lack of maturation of actin-myosin microfilaments. Molecular analysis demonstrated that ectopic Noggin-expressing regions in the early heart's pacemaker region, failed to express the potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 (Hcn4), resulting in an overall decrease in Hcn4 levels. CONCLUSIONS Combined, our results reveal a novel role for BMP signaling in the progression of heart development from the tubular heart stage to the looped stage by means of regulation of proliferation and promotion of maturation of the in utero heart's contractile apparatus and pacemaker.
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Affiliation(s)
- Olga Simmons
- Developmental Biology and Neonatal Medicine Program, HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana
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Linask KK, Han M, Bravo-Valenzuela NJM. Changes in vitelline and utero-placental hemodynamics: implications for cardiovascular development. Front Physiol 2014; 5:390. [PMID: 25426076 PMCID: PMC4227466 DOI: 10.3389/fphys.2014.00390] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 09/21/2014] [Indexed: 12/31/2022] Open
Abstract
Analyses of cardiovascular development have shown an important interplay between heart function, blood flow, and morphogenesis of heart structure during the formation of a four-chambered heart. It is known that changes in vitelline and placental blood flow seemingly contribute substantially to early cardiac hemodynamics. This suggests that in order to understand mammalian cardiac structure-hemodynamic functional relationships, blood flow from the extra-embryonic circulation needs to be taken into account and its possible impact on cardiogenesis defined. Previously published Doppler ultrasound analyses and data of utero-placental blood flow from human studies and those using the mouse model are compared to changes observed with environmental exposures that lead to cardiovascular anomalies. Use of current concepts and models related to mechanotransduction of blood flow and fluid forces may help in the future to better define the characteristics of normal and abnormal utero-placental blood flow and the changes in the biophysical parameters that may contribute to congenital heart defects. Evidence from multiple studies is discussed to provide a framework for future modeling of the impact of experimental changes in blood flow on the mouse heart during normal and abnormal cardiogenesis.
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Affiliation(s)
- Kersti K Linask
- Department of Pediatrics, Morsani College of Medicine, Children's Research Institute, University of South Florida Health St. Petersburg, FL, USA
| | - Mingda Han
- Department of Pediatrics, Morsani College of Medicine, Children's Research Institute, University of South Florida Health St. Petersburg, FL, USA
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50
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Fauzi I, Panoskaltsis N, Mantalaris A. Early exposure of murine embryonic stem cells to hematopoietic cytokines differentially directs definitive erythropoiesis and cardiomyogenesis in alginate hydrogel three-dimensional cultures. Stem Cells Dev 2014; 23:2720-9. [PMID: 24926614 DOI: 10.1089/scd.2014.0105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
HepG2-conditioned medium (CM) facilitates early differentiation of murine embryonic stem cells (mESCs) into hematopoietic cells in two-dimensional cultures through formation of embryoid-like colonies (ELCs), bypassing embryoid body (EB) formation. We now demonstrate that three-dimensional (3D) cultures of alginate-encapsulated mESCs cultured in a rotating wall vessel bioreactor can be differentially driven toward definitive erythropoiesis and cardiomyogenesis in the absence of ELC formation. Three groups were evaluated: mESCs in maintenance medium with leukemia inhibitory factor (LIF, control) and mESCs cultured with HepG2 CM (CM1 and CM2). Control and CM1 groups were cultivated for 8 days in early differentiation medium with murine stem cell factor (mSCF) followed by 10 days in hematopoietic differentiation medium (HDM) containing human erythropoietin, m-interleukin (mIL)-3, and mSCF. CM2 cells were cultured for 18 days in HDM, bypassing early differentiation. In CM1, a fivefold expansion of hematopoietic colonies was observed at day 14, with enhancement of erythroid progenitors, hematopoietic genes (Gata-2 and SCL), erythroid genes (EKLF and β-major globin), and proteins (Gata-1 and β-globin), although ζ-globin was not expressed. In contrast, CM2 primarily produced beating colonies in standard hematopoietic colony assay and expressed early cardiomyogenic markers, anti-sarcomeric α-actinin and Gata-4. In conclusion, a scalable, automatable, integrated, 3D bioprocess for the differentiation of mESC toward definitive erythroblasts has been established. Interestingly, cardiomyogenesis was also directed in a specific protocol with HepG2 CM and hematopoietic cytokines making this platform a useful tool for the study of erythroid and cardiomyogenic development.
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Affiliation(s)
- Iliana Fauzi
- 1 Biological Systems Engineering Laboratory , Department of Chemical Engineering and Chemical Technology, Imperial College London, London, United Kingdom
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