1
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Abraham E, Volmert B, Roule T, Huang L, Yu J, Williams AE, Cohen HM, Douglas A, Megill E, Morris A, Stronati E, Fueyo R, Zubillaga M, Elrod JW, Akizu N, Aguirre A, Estaras C. A Retinoic Acid:YAP1 signaling axis controls atrial lineage commitment. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.11.602981. [PMID: 39026825 PMCID: PMC11257518 DOI: 10.1101/2024.07.11.602981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Vitamin A/Retinoic Acid (Vit A/RA) signaling is essential for heart development. In cardiac progenitor cells (CPCs), RA signaling induces the expression of atrial lineage genes while repressing ventricular genes, thereby promoting the acquisition of an atrial cardiomyocyte cell fate. To achieve this, RA coordinates a complex regulatory network of downstream effectors that is not fully identified. To address this gap, we applied a functional genomics approach (i.e scRNAseq and snATACseq) to untreated and RA-treated human embryonic stem cells (hESCs)-derived CPCs. Unbiased analysis revealed that the Hippo effectors YAP1 and TEAD4 are integrated with the atrial transcription factor enhancer network, and that YAP1 is necessary for activation of RA-enhancers in CPCs. Furthermore, in vivo analysis of control and conditionally YAP1 KO mouse embryos (Sox2-cre) revealed that the expression of atrial lineage genes, such as NR2F2, is compromised by YAP1 deletion in the CPCs of the second heart field. Accordingly, we found that YAP1 is required for the formation of an atrial chamber but is dispensable for the formation of a ventricle, in hESC-derived patterned cardiac organoids. Overall, our findings revealed that YAP1 is a non-canonical effector of RA signaling essential for the acquisition of atrial lineages during cardiogenesis.
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Affiliation(s)
- Elizabeth Abraham
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Brett Volmert
- Institute for Quantitative Health Science and Engineering, Division of Developmental and Stem Cell Biology, Michigan State University, East Lansing, MI, USA
| | - Thomas Roule
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Ling Huang
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Jingting Yu
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - April E Williams
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Henry M Cohen
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Aidan Douglas
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Emily Megill
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Alex Morris
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Eleonora Stronati
- Department of Child and Adolescence Psychiatry, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Raquel Fueyo
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, USA
| | - Mikel Zubillaga
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - John W Elrod
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Naiara Akizu
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Aitor Aguirre
- Institute for Quantitative Health Science and Engineering, Division of Developmental and Stem Cell Biology, Michigan State University, East Lansing, MI, USA
| | - Conchi Estaras
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
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2
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Song M, Wang H, Liu C, Jin S, Liu B, Sun W. Non-coding RNAs as regulators of the Hippo pathway in cardiac development and cardiovascular disease. Front Pharmacol 2024; 15:1348280. [PMID: 38698813 PMCID: PMC11063341 DOI: 10.3389/fphar.2024.1348280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 04/09/2024] [Indexed: 05/05/2024] Open
Abstract
Cardiovascular diseases pose a serious threat to human health. The onset of cardiovascular diseases involves the comprehensive effects of multiple genes and environmental factors, and multiple signaling pathways are involved in regulating the occurrence and development of cardiovascular diseases. The Hippo pathway is a highly conserved signaling pathway involved in the regulation of cell proliferation, apoptosis, and differentiation. Recently, it has been widely studied in the fields of cardiovascular disease, cancer, and cell regeneration. Non-coding RNA (ncRNAs), which are important small molecules for the regulation of gene expression in cells, can directly target genes and have diverse regulatory functions. Recent studies have found that ncRNAs interact with Hippo pathway components to regulate myocardial fibrosis, cardiomyocyte proliferation, apoptosis, and hypertrophy and play an important role in cardiovascular disease. In this review, we describe the mode of action of ncRNAs in regulating the Hippo pathway, provide new ideas for further research, and identify molecules involved in the mechanism of action of ncRNAs and the Hippo pathway as potential therapeutic targets, with the aim of finding new modes of action for the treatment and prevention of cardiovascular diseases.
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Affiliation(s)
- Mengyang Song
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - He Wang
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Caixia Liu
- Department of Neurology, The Liaoning Province People’s Hospital, Shenyang, China
| | - Sijie Jin
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Bin Liu
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Wei Sun
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
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3
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Noël ES. Cardiac construction-Recent advances in morphological and transcriptional modeling of early heart development. Curr Top Dev Biol 2024; 156:121-156. [PMID: 38556421 DOI: 10.1016/bs.ctdb.2024.02.005] [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: 04/02/2024]
Abstract
During human embryonic development the early establishment of a functional heart is vital to support the growing fetus. However, forming the embryonic heart is an extremely complex process, requiring spatiotemporally controlled cell specification and differentiation, tissue organization, and coordination of cardiac function. These complexities, in concert with the early and rapid development of the embryonic heart, mean that understanding the intricate interplay between these processes that help shape the early heart remains highly challenging. In this review I focus on recent insights from animal models that have shed new light on the earliest stages of heart development. This includes specification and organization of cardiac progenitors, cell and tissue movements that make and shape the early heart tube, and the initiation of the first beat in the developing heart. In addition I highlight relevant in vitro models that could support translation of findings from animal models to human heart development. Finally I discuss challenges that are being addressed in the field, along with future considerations that together may help move us towards a deeper understanding of how our hearts are made.
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Affiliation(s)
- Emily S Noël
- School of Biosciences and Bateson Centre, University of Sheffield, Sheffield, United Kingdom.
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4
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Leng J, Wang C, Liang Z, Qiu F, Zhang S, Yang Y. An updated review of YAP: A promising therapeutic target against cardiac aging? Int J Biol Macromol 2024; 254:127670. [PMID: 37913886 DOI: 10.1016/j.ijbiomac.2023.127670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/05/2023] [Accepted: 10/23/2023] [Indexed: 11/03/2023]
Abstract
The transcriptional co-activator Yes-associated protein (YAP) functions as a downstream effector of the Hippo signaling pathway and plays a crucial role in cardiomyocyte survival. In its non-phosphorylated activated state, YAP binds to transcription factors, activating the transcription of downstream target genes. It also regulates cell proliferation and survival by selectively binding to enhancers and activating target genes. However, the upregulation of the Hippo pathway in human heart failure inhibits cardiac regeneration and disrupts astrogenesis, thus preventing the nuclear translocation of YAP. Existing literature indicates that the Hippo/YAP axis contributes to inflammation and fibrosis, potentially playing a role in the development of cardiac, vascular and renal injuries. Moreover, it is a key mediator of myofibroblast differentiation and fibrosis in the infarcted heart. Given these insights, can we harness YAP's regenerative potential in a targeted manner? In this review, we provide a detailed discussion of the Hippo signaling pathway and consolidate concepts for the development and intervention of cardiac anti-aging drugs to leverage YAP signaling as a pivotal target.
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Affiliation(s)
- Jingzhi Leng
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; School of Physical Education, Qingdao University, China
| | - Chuanzhi Wang
- College of Sports Science, South China Normal University, Guangzhou, China
| | - Zhide Liang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; Qingdao Cancer Institute, Qingdao University, Qingdao, China
| | - Fanghui Qiu
- School of Physical Education, Qingdao University, China
| | - Shuangshuang Zhang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; Qingdao Cancer Institute, Qingdao University, Qingdao, China; School of Physical Education, Qingdao University, China.
| | - Yuan Yang
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao, China; Qingdao Cancer Institute, Qingdao University, Qingdao, China; School of Physical Education, Qingdao University, China.
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5
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Nakajima H, Ishikawa H, Yamamoto T, Chiba A, Fukui H, Sako K, Fukumoto M, Mattonet K, Kwon HB, Hui SP, Dobreva GD, Kikuchi K, Helker CSM, Stainier DYR, Mochizuki N. Endoderm-derived islet1-expressing cells differentiate into endothelial cells to function as the vascular HSPC niche in zebrafish. Dev Cell 2023; 58:224-238.e7. [PMID: 36693371 DOI: 10.1016/j.devcel.2022.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 10/26/2022] [Accepted: 12/29/2022] [Indexed: 01/25/2023]
Abstract
Endothelial cells (ECs) line blood vessels and serve as a niche for hematopoietic stem and progenitor cells (HSPCs). Recent data point to tissue-specific EC specialization as well as heterogeneity; however, it remains unclear how ECs acquire these properties. Here, by combining live-imaging-based lineage-tracing and single-cell transcriptomics in zebrafish embryos, we identify an unexpected origin for part of the vascular HSPC niche. We find that islet1 (isl1)-expressing cells are the progenitors of the venous ECs that constitute the majority of the HSPC niche. These isl1-expressing cells surprisingly originate from the endoderm and differentiate into ECs in a process dependent on Bmp-Smad signaling and subsequently requiring npas4l (cloche) function. Single-cell RNA sequencing analyses show that isl1-derived ECs express a set of genes that reflect their distinct origin. This study demonstrates that endothelial specialization in the HSPC niche is determined at least in part by the origin of the ECs.
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Affiliation(s)
- Hiroyuki Nakajima
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan.
| | - Hiroyuki Ishikawa
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Takuya Yamamoto
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan; Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan; AMED-CREST, AMED, Tokyo 100-0004, Japan; Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto 606-8507, Japan
| | - Ayano Chiba
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Hajime Fukui
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Keisuke Sako
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Moe Fukumoto
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Kenny Mattonet
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany
| | - Hyouk-Bum Kwon
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany; Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Subhra P Hui
- S. N. Pradhan Centre for Neurosciences, University of Calcutta, Kolkata 700019, India
| | - Gergana D Dobreva
- Department of Cardiovascular Genomics and Epigenomics, European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim 68167, Germany
| | - Kazu Kikuchi
- Department of Cardiac Regeneration Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Christian S M Helker
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany; Philipps-University Marburg, Faculty of Biology, Cell Signaling and Dynamics, Marburg 35043, Germany
| | - Didier Y R Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany.
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan.
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6
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Stutt N, Song M, Wilson MD, Scott IC. Cardiac specification during gastrulation - The Yellow Brick Road leading to Tinman. Semin Cell Dev Biol 2021; 127:46-58. [PMID: 34865988 DOI: 10.1016/j.semcdb.2021.11.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/05/2021] [Accepted: 11/11/2021] [Indexed: 02/07/2023]
Abstract
The question of how the heart develops, and the genetic networks governing this process have become intense areas of research over the past several decades. This research is propelled by classical developmental studies and potential clinical applications to understand and treat congenital conditions in which cardiac development is disrupted. Discovery of the tinman gene in Drosophila, and examination of its vertebrate homolog Nkx2.5, along with other core cardiac transcription factors has revealed how cardiac progenitor differentiation and maturation drives heart development. Careful observation of cardiac morphogenesis along with lineage tracing approaches indicated that cardiac progenitors can be divided into two broad classes of cells, namely the first and second heart fields, that contribute to the heart in two distinct waves of differentiation. Ample evidence suggests that the fate of individual cardiac progenitors is restricted to distinct cardiac structures quite early in development, well before the expression of canonical cardiac progenitor markers like Nkx2.5. Here we review the initial specification of cardiac progenitors, discuss evidence for the early patterning of cardiac progenitors during gastrulation, and consider how early gene expression programs and epigenetic patterns can direct their development. A complete understanding of when and how the developmental potential of cardiac progenitors is determined, and their potential plasticity, is of great interest developmentally and also has important implications for both the study of congenital heart disease and therapeutic approaches based on cardiac stem cell programming.
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Affiliation(s)
- Nathan Stutt
- Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S1A8, Canada
| | - Mengyi Song
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S1A8, Canada
| | - Michael D Wilson
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S1A8, Canada
| | - Ian C Scott
- Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON M5G0A4, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S1A8, Canada.
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7
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Fukui H, Chow RWY, Xie J, Foo YY, Yap CH, Minc N, Mochizuki N, Vermot J. Bioelectric signaling and the control of cardiac cell identity in response to mechanical forces. Science 2021; 374:351-354. [PMID: 34648325 DOI: 10.1126/science.abc6229] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Hajime Fukui
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Centre National de la Recherche Scientifique UMR7104, Institut National de la Santé et de la Recherche Médicale U1258 and Université de Strasbourg, Illkirch, France.,Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Japan
| | - Renee Wei-Yan Chow
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Centre National de la Recherche Scientifique UMR7104, Institut National de la Santé et de la Recherche Médicale U1258 and Université de Strasbourg, Illkirch, France
| | - Jing Xie
- Université de Paris, Centre National de la Recherche Scientifique UMR7592, Institut Jacques Monod, Paris, France
| | - Yoke Yin Foo
- Department of Biomedical Engineering, National University of Singapore, Singapore, Singapore
| | - Choon Hwai Yap
- Department of Biomedical Engineering, National University of Singapore, Singapore, Singapore.,Department of Bioengineering, Imperial College London, London, UK
| | - Nicolas Minc
- Université de Paris, Centre National de la Recherche Scientifique UMR7592, Institut Jacques Monod, Paris, France
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Japan
| | - Julien Vermot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Centre National de la Recherche Scientifique UMR7104, Institut National de la Santé et de la Recherche Médicale U1258 and Université de Strasbourg, Illkirch, France.,Department of Bioengineering, Imperial College London, London, UK
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8
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Derrick CJ, Pollitt EJG, Sanchez Sevilla Uruchurtu A, Hussein F, Grierson AJ, Noël ES. Lamb1a regulates atrial growth by limiting second heart field addition during zebrafish heart development. Development 2021; 148:272294. [PMID: 34568948 DOI: 10.1242/dev.199691] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 09/19/2021] [Indexed: 12/20/2022]
Abstract
During early vertebrate heart development, the heart transitions from a linear tube to a complex asymmetric structure, a morphogenetic process that occurs simultaneously with growth of the heart. Cardiac growth during early heart morphogenesis is driven by deployment of cells from the second heart field (SHF) into both poles of the heart. Laminin is a core component of the extracellular matrix and, although mutations in laminin subunits are linked with cardiac abnormalities, no role for laminin has been identified in early vertebrate heart morphogenesis. We identified tissue-specific expression of laminin genes in the developing zebrafish heart, supporting a role for laminins in heart morphogenesis. Analysis of heart development in lamb1a zebrafish mutant embryos reveals mild morphogenetic defects and progressive cardiomegaly, and that Lamb1a functions to limit heart size during cardiac development by restricting SHF addition. lamb1a mutants exhibit hallmarks of altered haemodynamics, and blocking cardiac contractility in lamb1a mutants rescues heart size and atrial SHF addition. Together, these results suggest that laminin mediates interactions between SHF deployment and cardiac biomechanics during heart morphogenesis and growth in the developing embryo.
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Affiliation(s)
| | - Eric J G Pollitt
- Department of Biomedical Science, University of Sheffield, Sheffield S10 2TN, UK
| | | | - Farah Hussein
- Department of Biomedical Science, University of Sheffield, Sheffield S10 2TN, UK
| | - Andrew J Grierson
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield S10 2HQ, UK
| | - Emily S Noël
- Department of Biomedical Science, University of Sheffield, Sheffield S10 2TN, UK
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9
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Bornhorst D, Abdelilah-Seyfried S. Strong as a Hippo's Heart: Biomechanical Hippo Signaling During Zebrafish Cardiac Development. Front Cell Dev Biol 2021; 9:731101. [PMID: 34422841 PMCID: PMC8375320 DOI: 10.3389/fcell.2021.731101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 07/20/2021] [Indexed: 11/13/2022] Open
Abstract
The heart is comprised of multiple tissues that contribute to its physiological functions. During development, the growth of myocardium and endocardium is coupled and morphogenetic processes within these separate tissue layers are integrated. Here, we discuss the roles of mechanosensitive Hippo signaling in growth and morphogenesis of the zebrafish heart. Hippo signaling is involved in defining numbers of cardiac progenitor cells derived from the secondary heart field, in restricting the growth of the epicardium, and in guiding trabeculation and outflow tract formation. Recent work also shows that myocardial chamber dimensions serve as a blueprint for Hippo signaling-dependent growth of the endocardium. Evidently, Hippo pathway components act at the crossroads of various signaling pathways involved in embryonic zebrafish heart development. Elucidating how biomechanical Hippo signaling guides heart morphogenesis has direct implications for our understanding of cardiac physiology and pathophysiology.
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Affiliation(s)
- Dorothee Bornhorst
- Stem Cell Program, Division of Hematology and Oncology, Boston Children's Hospital, Boston, MA, United States.,Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, United States
| | - Salim Abdelilah-Seyfried
- Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany.,Institute of Molecular Biology, Hannover Medical School, Hanover, Germany
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10
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Peralta M, Ortiz Lopez L, Jerabkova K, Lucchesi T, Vitre B, Han D, Guillemot L, Dingare C, Sumara I, Mercader N, Lecaudey V, Delaval B, Meilhac SM, Vermot J. Intraflagellar Transport Complex B Proteins Regulate the Hippo Effector Yap1 during Cardiogenesis. Cell Rep 2021; 32:107932. [PMID: 32698004 DOI: 10.1016/j.celrep.2020.107932] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 04/30/2020] [Accepted: 06/29/2020] [Indexed: 02/06/2023] Open
Abstract
Cilia and the intraflagellar transport (IFT) proteins involved in ciliogenesis are associated with congenital heart diseases (CHDs). However, the molecular links between cilia, IFT proteins, and cardiogenesis are yet to be established. Using a combination of biochemistry, genetics, and live-imaging methods, we show that IFT complex B proteins (Ift88, Ift54, and Ift20) modulate the Hippo pathway effector YAP1 in zebrafish and mouse. We demonstrate that this interaction is key to restrict the formation of the proepicardium and the myocardium. In cellulo experiments suggest that IFT88 and IFT20 interact with YAP1 in the cytoplasm and functionally modulate its activity, identifying a molecular link between cilia-related proteins and the Hippo pathway. Taken together, our results highlight a noncanonical role for IFT complex B proteins during cardiogenesis and shed light on a mechanism of action for ciliary proteins in YAP1 regulation.
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Affiliation(s)
- Marina Peralta
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France; Université de Strasbourg, Illkirch, France
| | - Laia Ortiz Lopez
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France; Université de Strasbourg, Illkirch, France
| | - Katerina Jerabkova
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France; Université de Strasbourg, Illkirch, France
| | - Tommaso Lucchesi
- Imagine-Institut Pasteur, Laboratory of Heart Morphogenesis, Paris, France; INSERM UMR1163, Université Paris Descartes, Paris, France; Sorbonne Université, Collège Doctoral, F-75005, Paris, France
| | - Benjamin Vitre
- Centre de Recherche en Biologie Cellulaire de Montpellier (CRBM), CNRS, Université de Montpellier, Montpellier, France
| | - Dong Han
- Imagine-Institut Pasteur, Laboratory of Heart Morphogenesis, Paris, France; INSERM UMR1163, Université Paris Descartes, Paris, France
| | - Laurent Guillemot
- Imagine-Institut Pasteur, Laboratory of Heart Morphogenesis, Paris, France; INSERM UMR1163, Université Paris Descartes, Paris, France
| | - Chaitanya Dingare
- Institute for Cell Biology and Neurosciences, Goethe University of Frankfurt, Frankfurt, Germany
| | - Izabela Sumara
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France; Université de Strasbourg, Illkirch, France
| | - Nadia Mercader
- Institute of Anatomy, University of Bern, Bern, Switzerland; Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Virginie Lecaudey
- Institute for Cell Biology and Neurosciences, Goethe University of Frankfurt, Frankfurt, Germany
| | - Benedicte Delaval
- Centre de Recherche en Biologie Cellulaire de Montpellier (CRBM), CNRS, Université de Montpellier, Montpellier, France
| | - Sigolène M Meilhac
- Imagine-Institut Pasteur, Laboratory of Heart Morphogenesis, Paris, France; INSERM UMR1163, Université Paris Descartes, Paris, France
| | - Julien Vermot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France; Université de Strasbourg, Illkirch, France; Sorbonne Université, Collège Doctoral, F-75005, Paris, France; Department of Bioengineering, Imperial College London, London, UK.
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11
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Martin KE, Waxman JS. Atrial and Sinoatrial Node Development in the Zebrafish Heart. J Cardiovasc Dev Dis 2021; 8:jcdd8020015. [PMID: 33572147 PMCID: PMC7914448 DOI: 10.3390/jcdd8020015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/31/2021] [Accepted: 02/04/2021] [Indexed: 12/11/2022] Open
Abstract
Proper development and function of the vertebrate heart is vital for embryonic and postnatal life. Many congenital heart defects in humans are associated with disruption of genes that direct the formation or maintenance of atrial and pacemaker cardiomyocytes at the venous pole of the heart. Zebrafish are an outstanding model for studying vertebrate cardiogenesis, due to the conservation of molecular mechanisms underlying early heart development, external development, and ease of genetic manipulation. Here, we discuss early developmental mechanisms that instruct appropriate formation of the venous pole in zebrafish embryos. We primarily focus on signals that determine atrial chamber size and the specialized pacemaker cells of the sinoatrial node through directing proper specification and differentiation, as well as contemporary insights into the plasticity and maintenance of cardiomyocyte identity in embryonic zebrafish hearts. Finally, we integrate how these insights into zebrafish cardiogenesis can serve as models for human atrial defects and arrhythmias.
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Affiliation(s)
- Kendall E. Martin
- Molecular Genetics, Biochemistry, and Microbiology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA;
- Molecular Cardiovascular Biology Division and Heart Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Joshua S. Waxman
- Molecular Cardiovascular Biology Division and Heart Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
- Correspondence:
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12
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Pulkkinen HH, Kiema M, Lappalainen JP, Toropainen A, Beter M, Tirronen A, Holappa L, Niskanen H, Kaikkonen MU, Ylä-Herttuala S, Laakkonen JP. BMP6/TAZ-Hippo signaling modulates angiogenesis and endothelial cell response to VEGF. Angiogenesis 2021; 24:129-144. [PMID: 33021694 PMCID: PMC7921060 DOI: 10.1007/s10456-020-09748-4] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 09/18/2020] [Indexed: 12/12/2022]
Abstract
The BMP/TGFβ-Smad, Notch and VEGF signaling guides formation of endothelial tip and stalk cells. However, the crosstalk of bone morphogenetic proteins (BMPs) and vascular endothelial growth factor receptor 2 (VEGFR2) signaling has remained largely unknown. We demonstrate that BMP family members regulate VEGFR2 and Notch signaling, and act via TAZ-Hippo signaling pathway. BMPs were found to be regulated after VEGF gene transfer in C57/Bl6 mice and in a porcine myocardial ischemia model. BMPs 2/4/6 were identified as endothelium-specific targets of VEGF. BMP2 modulated VEGF-mediated endothelial sprouting via Delta like Canonical Notch Ligand 4 (DLL4). BMP6 modulated VEGF signaling by regulating VEGFR2 expression and acted via Hippo signaling effector TAZ, known to regulate cell survival/proliferation, and to be dysregulated in cancer. In a matrigel plug assay in nude mice BMP6 was further demonstrated to induce angiogenesis. BMP6 is the first member of BMP family found to directly regulate both Hippo signaling and neovessel formation. It may thus serve as a target in pro/anti-angiogenic therapies.
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Affiliation(s)
- H H Pulkkinen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - M Kiema
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - J P Lappalainen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
- Department of Clinical Chemistry, University of Eastern Finland and Eastern Finland Laboratory Centre, Kuopio, Finland
| | - A Toropainen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - M Beter
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - A Tirronen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - L Holappa
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - H Niskanen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - M U Kaikkonen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - S Ylä-Herttuala
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
- Science Service Center, Kuopio University Hospital, Kuopio, Finland
- Gene Therapy Unit, Kuopio University Hospital, Kuopio, Finland
| | - Johanna P Laakkonen
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland.
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13
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Anterior lateral plate mesoderm gives rise to multiple tissues and requires tbx5a function in left-right asymmetry, migration dynamics, and cell specification of late-addition cardiac cells. Dev Biol 2021; 472:52-66. [PMID: 33482174 DOI: 10.1016/j.ydbio.2021.01.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 01/23/2023]
Abstract
In this study, we elucidate a single cell resolution fate map in the zebrafish in a sub-section of the anterior Lateral Plate Mesoderm (aLPM) at 18 hpf. Our results show that this tissue is not organized into segregated regions but gives rise to intermingled pericardial sac, peritoneum, pharyngeal arch and cardiac precursors. We further report upon asymmetrical contributions of lateral aLPM-derived heart precursors-specifically that twice as many heart precursors arise from the right side versus the left side of the embryo. Cell tracking analyses and large-scale cell labeling of the lateral aLPM corroborate these differences and show that the observed asymmetries are dependent upon Tbx5a expression. Previously, it was shown that cardiac looping was affected in Tbx5a knock-down and knock-out zebrafish (Garrity et al., 2002; Parrie et al., 2013); our present data also implicate tbx5a function in cell specification, establishment and maintenance of cardiac left-right asymmetry.
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14
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Chen X, Yuan W, Li Y, Luo J, Hou N. Role of Hippo-YAP1/TAZ pathway and its crosstalk in cardiac biology. Int J Biol Sci 2020; 16:2454-2463. [PMID: 32760212 PMCID: PMC7378646 DOI: 10.7150/ijbs.47142] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/11/2020] [Indexed: 12/14/2022] Open
Abstract
The Hippo pathway undertakes a pivotal role in organ size control and the process of physiology and pathology in tissue. Its downstream effectors YAP1 and TAZ receive upstream stimuli and exert transcription activity to produce biological output. Studies have demonstrated that the Hippo pathway contributes to maintenance of cardiac homeostasis and occurrence of cardiac disease. And these cardiac biological events are affected by crosstalk among Hippo-YAP1/TAZ, Wnt/β-catenin, Bone morphogenetic protein (BMP) and G-protein-coupled receptor (GPCR) signaling, which provides new insights into the Hippo pathway in heart. This review delineates the interaction among Hippo, Wnt, BMP and GPCR pathways and discusses the effects of these pathways in cardiac biology.
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Affiliation(s)
- Xiaoqing Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Wenchang Yuan
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou 511436, China
| | - Yilang Li
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Jiandong Luo
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
| | - Ning Hou
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China
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15
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Chen X, Li Y, Luo J, Hou N. Molecular Mechanism of Hippo-YAP1/TAZ Pathway in Heart Development, Disease, and Regeneration. Front Physiol 2020; 11:389. [PMID: 32390875 PMCID: PMC7191303 DOI: 10.3389/fphys.2020.00389] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 04/01/2020] [Indexed: 01/20/2023] Open
Abstract
The Hippo-YAP1/TAZ pathway is a highly conserved central mechanism that controls organ size through the regulation of cell proliferation and other physical attributes of cells. The transcriptional factors Yes-associated protein 1 (YAP1) and PDZ-binding motif (TAZ) act as downstream effectors of the Hippo pathway, and their subcellular location and transcriptional activities are affected by multiple post-translational modifications (PTMs). Studies have conclusively demonstrated a pivotal role of the Hippo-YAP1/TAZ pathway in cardiac development, disease, and regeneration. Targeted therapeutics for the YAP1/TAZ could be an effective treatment option for cardiac regeneration and disease. This review article provides an overview of the Hippo-YAP1/TAZ pathway and the increasing impact of PTMs in fine-tuning YAP1/TAZ activation; in addition, we discuss the potential contributions of the Hippo-YAP1/TAZ pathway in cardiac development, disease, and regeneration.
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Affiliation(s)
- Xiaoqing Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Institute of Cardiovascular Disease, Guangzhou Key Laboratory of Cardiovascular Disease, and The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yilang Li
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Institute of Cardiovascular Disease, Guangzhou Key Laboratory of Cardiovascular Disease, and The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiandong Luo
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Institute of Cardiovascular Disease, Guangzhou Key Laboratory of Cardiovascular Disease, and The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ning Hou
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, China.,Guangzhou Institute of Cardiovascular Disease, Guangzhou Key Laboratory of Cardiovascular Disease, and The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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16
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Brandt ZJ, North PN, Link BA. Somatic Mutations of lats2 Cause Peripheral Nerve Sheath Tumors in Zebrafish. Cells 2019; 8:E972. [PMID: 31450674 PMCID: PMC6770745 DOI: 10.3390/cells8090972] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/15/2019] [Accepted: 08/22/2019] [Indexed: 02/06/2023] Open
Abstract
The cellular signaling pathways underlying peripheral nerve sheath tumor (PNST) formation are poorly understood. Hippo signaling has been recently implicated in the biology of various cancers, and is thought to function downstream of mutations in the known PNST driver, NF2. Utilizing CRISPR-Cas9 gene editing, we targeted the canonical Hippo signaling kinase Lats2. We show that, while germline deletion leads to early lethality, targeted somatic mutations of zebrafish lats2 leads to peripheral nerve sheath tumor formation. These peripheral nerve sheath tumors exhibit high levels of Hippo effectors Yap and Taz, suggesting that dysregulation of these transcriptional co-factors drives PNST formation in this model. These data indicate that somatic lats2 deletion in zebrafish can serve as a powerful experimental platform to probe the mechanisms of PNST formation and progression.
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Affiliation(s)
- Zachary J Brandt
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Paula N North
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Brian A Link
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
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17
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Ren J, Han P, Ma X, Farah EN, Bloomekatz J, Zeng XXI, Zhang R, Swim MM, Witty AD, Knight HG, Deshpande R, Xu W, Yelon D, Chen S, Chi NC. Canonical Wnt5b Signaling Directs Outlying Nkx2.5+ Mesoderm into Pacemaker Cardiomyocytes. Dev Cell 2019; 50:729-743.e5. [PMID: 31402282 DOI: 10.1016/j.devcel.2019.07.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 05/01/2019] [Accepted: 07/11/2019] [Indexed: 12/21/2022]
Abstract
Pacemaker cardiomyocytes that create the sinoatrial node are essential for the initiation and maintenance of proper heart rhythm. However, illuminating developmental cues that direct their differentiation has remained particularly challenging due to the unclear cellular origins of these specialized cardiomyocytes. By discovering the origins of pacemaker cardiomyocytes, we reveal an evolutionarily conserved Wnt signaling mechanism that coordinates gene regulatory changes directing mesoderm cell fate decisions, which lead to the differentiation of pacemaker cardiomyocytes. We show that in zebrafish, pacemaker cardiomyocytes derive from a subset of Nkx2.5+ mesoderm that responds to canonical Wnt5b signaling to initiate the cardiac pacemaker program, including activation of pacemaker cell differentiation transcription factors Isl1 and Tbx18 and silencing of Nkx2.5. Moreover, applying these developmental findings to human pluripotent stem cells (hPSCs) notably results in the creation of hPSC-pacemaker cardiomyocytes, which successfully pace three-dimensional bioprinted hPSC-cardiomyocytes, thus providing potential strategies for biological cardiac pacemaker therapy.
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Affiliation(s)
- Jie Ren
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Peidong Han
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Xuanyi Ma
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Elie N Farah
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Joshua Bloomekatz
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA; Department of Biology, University of Mississippi, Oxford, MS 38677, USA
| | - Xin-Xin I Zeng
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
| | - Ruilin Zhang
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Megan M Swim
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Alec D Witty
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Hannah G Knight
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
| | - Rima Deshpande
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Weizhe Xu
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Deborah Yelon
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093, USA
| | - Shaochen Chen
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA; Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA; Institute for Engineering in Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Neil C Chi
- Department of Medicine, Division of Cardiology, University of California, San Diego, La Jolla, CA 92093, USA; Institute for Engineering in Medicine, University of California, San Diego, La Jolla, CA 92093, USA; Institute of Genomic Medicine, University of California, San Diego, La Jolla, CA 92093, USA.
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18
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Desgrange A, Le Garrec JF, Meilhac SM. Left-right asymmetry in heart development and disease: forming the right loop. Development 2018; 145:145/22/dev162776. [PMID: 30467108 DOI: 10.1242/dev.162776] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Extensive studies have shown how bilateral symmetry of the vertebrate embryo is broken during early development, resulting in a molecular left-right bias in the mesoderm. However, how this early asymmetry drives the asymmetric morphogenesis of visceral organs remains poorly understood. The heart provides a striking model of left-right asymmetric morphogenesis, undergoing rightward looping to shape an initially linear heart tube and align cardiac chambers. Importantly, abnormal left-right patterning is associated with severe congenital heart defects, as exemplified in heterotaxy syndrome. Here, we compare the mechanisms underlying the rightward looping of the heart tube in fish, chick and mouse embryos. We propose that heart looping is not only a question of direction, but also one of fine-tuning shape. This is discussed in the context of evolutionary and clinical perspectives.
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Affiliation(s)
- Audrey Desgrange
- Imagine-Institut Pasteur, Laboratory of Heart Morphogenesis, 75015 Paris, France.,INSERM UMR1163, Université Paris Descartes, 75015 Paris, France
| | - Jean-François Le Garrec
- Imagine-Institut Pasteur, Laboratory of Heart Morphogenesis, 75015 Paris, France.,INSERM UMR1163, Université Paris Descartes, 75015 Paris, France
| | - Sigolène M Meilhac
- Imagine-Institut Pasteur, Laboratory of Heart Morphogenesis, 75015 Paris, France .,INSERM UMR1163, Université Paris Descartes, 75015 Paris, France
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