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Chi C, Roland TJ, Song K. Differentiation of Pluripotent Stem Cells for Disease Modeling: Learning from Heart Development. Pharmaceuticals (Basel) 2024; 17:337. [PMID: 38543122 PMCID: PMC10975450 DOI: 10.3390/ph17030337] [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: 01/13/2024] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 04/01/2024] Open
Abstract
Heart disease is a pressing public health problem and the leading cause of death worldwide. The heart is the first organ to gain function during embryogenesis in mammals. Heart development involves cell determination, expansion, migration, and crosstalk, which are orchestrated by numerous signaling pathways, such as the Wnt, TGF-β, IGF, and Retinoic acid signaling pathways. Human-induced pluripotent stem cell-based platforms are emerging as promising approaches for modeling heart disease in vitro. Understanding the signaling pathways that are essential for cardiac development has shed light on the molecular mechanisms of congenital heart defects and postnatal heart diseases, significantly advancing stem cell-based platforms to model heart diseases. This review summarizes signaling pathways that are crucial for heart development and discusses how these findings improve the strategies for modeling human heart disease in vitro.
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Affiliation(s)
- Congwu Chi
- Heart Institute, University of South Florida, Tampa, FL 33602, USA; (C.C.); (T.J.R.)
- Department of Internal Medicine, University of South Florida, Tampa, FL 33602, USA
- Center for Regenerative Medicine, University of South Florida, Tampa, FL 33602, USA
| | - Truman J. Roland
- Heart Institute, University of South Florida, Tampa, FL 33602, USA; (C.C.); (T.J.R.)
- Department of Internal Medicine, University of South Florida, Tampa, FL 33602, USA
- Center for Regenerative Medicine, University of South Florida, Tampa, FL 33602, USA
| | - Kunhua Song
- Heart Institute, University of South Florida, Tampa, FL 33602, USA; (C.C.); (T.J.R.)
- Department of Internal Medicine, University of South Florida, Tampa, FL 33602, USA
- Center for Regenerative Medicine, University of South Florida, Tampa, FL 33602, USA
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Gonzalez V, Grant MG, Suzuki M, Christophers B, Rowland Williams J, Burdine RD. Cooperation between Nodal and FGF signals regulates zebrafish cardiac cell migration and heart morphogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.05.574380. [PMID: 38260277 PMCID: PMC10802409 DOI: 10.1101/2024.01.05.574380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Asymmetric vertebrate heart development is driven by an intricate sequence of morphogenetic cell movements, the coordination of which requires precise interpretation of signaling cues by heart primordia. Here we show that Nodal functions cooperatively with FGF during heart tube formation and asymmetric placement. Both pathways act as migratory stimuli for cardiac progenitor cells (CPCs), but FGF is dispensable for directing heart tube asymmetry, which is governed by Nodal. We further find that Nodal controls CPC migration by inducing left-right asymmetries in the formation of actin-based protrusions in CPCs. Additionally, we define a developmental window in which FGF signals are required for proper heart looping and show cooperativity between FGF and Nodal in this process. We present evidence FGF may promote heart looping through addition of the secondary heart field. Finally, we demonstrate that loss of FGF signaling affects proper development of the atrioventricular canal (AVC), which likely contributes to abnormal chamber morphologies in FGF-deficient hearts. Together, our data shed insight into how the spatiotemporal dynamics of signaling cues regulate the cellular behaviors underlying organ morphogenesis.
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Affiliation(s)
- Vanessa Gonzalez
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA, 08544
| | - Meagan G. Grant
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA, 08544
| | - Makoto Suzuki
- Amphibian Research Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Higashihiroshima, Hiroshima, Japan, 739-8526
| | - Briana Christophers
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA, 08544
| | - Jessica Rowland Williams
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA, 08544
- Current affiliation: National Institute for Student Success, at Georgia State University, Atlanta, GA 30303
| | - Rebecca D. Burdine
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA, 08544
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3
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Ye J, Niu Y, Peng Y, Huang J, Wang H, Fu Q, Li F, Xu R, Chen S, Xu Y, Sun K. Analysis of pathogenic variants in 605 Chinese children with non-syndromic cardiac conotruncal defects based on targeted sequencing. Genomics 2023; 115:110676. [PMID: 37406974 DOI: 10.1016/j.ygeno.2023.110676] [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: 03/15/2023] [Revised: 06/15/2023] [Accepted: 07/01/2023] [Indexed: 07/07/2023]
Abstract
OBJECTIVE Deleterious genetic variants comprise one cause of cardiac conotruncal defects (CTDs). Genes associated with CTDs are gradually being identified. In the present study, we aimed to explore the profile of genetic variants of CTD-associated genes in Chinese patients with non-syndromic CTDs. METHODS Thirty-nine CTD-related genes were selected after reviewing published articles in NCBI, HGMD, OMIM, and HPO. In total, 605 patients with non-syndromic CTDs and 300 healthy controls, all of Han ethnicity, were recruited. High-throughput targeted sequencing was used to detect genetic variants in the protein-coding regions of genes. We performed rigorous variant-level filtrations to identify potentially damaging variants (Dvars) using prediction programs including CADD, SIFT, PolyPhen-2, and MutationTaster. RESULT Dvars were detected in 66.7% (26/39) of the targeted CTD-associated genes. In total, 11.07% (67/605) of patients with non-syndromic CTDs were found to carry one or more Dvars in targeted CTD-associated genes. Dvars in FOXH1, TBX2, NFATC1, FOXC2, and FOXC1 were common in the CTD cohort (1.5% [9/605], 1.2% [7/605], 1.2% [7/605], 1% [6/605], and 0.5% [3/605], respectively). CONCLUSION Targeted exon sequencing is a cost-effective approach for the genetic diagnosis of CTDs. Our findings contribute to an understanding of the genetic architecture of non-syndromic CTDs.
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Affiliation(s)
- JiaJun Ye
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Yiwei Niu
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Yongxuan Peng
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Jihong Huang
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Huiying Wang
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Qihua Fu
- Pediatric Translational Medicine Institute, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Fen Li
- Department of Pediatric Cardiology, Shanghai Children's Medical Center, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Rang Xu
- Scientific Research Center, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Sun Chen
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Yuejuan Xu
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China.
| | - Kun Sun
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China.
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Yagi H, Cui C, Saydmohammed M, Gabriel G, Baker C, Devine W, Wu Y, Lin JH, Malek M, Bais A, Murray S, Aronow B, Tsang M, Kostka D, Lo CW. Spatial transcriptome profiling uncovers metabolic regulation of left-right patterning. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.21.537827. [PMID: 37131609 PMCID: PMC10153223 DOI: 10.1101/2023.04.21.537827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Left-right patterning disturbance can cause severe birth defects, but it remains least understood of the three body axes. We uncovered an unexpected role for metabolic regulation in left-right patterning. Analysis of the first spatial transcriptome profile of left-right patterning revealed global activation of glycolysis, accompanied by right-sided expression of Bmp7 and genes regulating insulin growth factor signaling. Cardiomyocyte differentiation was left-biased, which may underlie the specification of heart looping orientation. This is consistent with known Bmp7 stimulation of glycolysis and glycolysis suppression of cardiomyocyte differentiation. Liver/lung laterality may be specified via similar metabolic regulation of endoderm differentiation. Myo1d , found to be left-sided, was shown to regulate gut looping in mice, zebrafish, and human. Together these findings indicate metabolic regulation of left-right patterning. This could underlie high incidence of heterotaxy-related birth defects in maternal diabetes, and the association of PFKP, allosteric enzyme regulating glycolysis, with heterotaxy. This transcriptome dataset will be invaluable for interrogating birth defects involving laterality disturbance.
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Kemmler CL, Moran HR, Murray BF, Scoresby A, Klem JR, Eckert RL, Lepovsky E, Bertho S, Nieuwenhuize S, Burger S, D'Agati G, Betz C, Puller AC, Felker A, Ditrychova K, Bötschi S, Affolter M, Rohner N, Lovely CB, Kwan KM, Burger A, Mosimann C. Next-generation plasmids for transgenesis in zebrafish and beyond. Development 2023; 150:dev201531. [PMID: 36975217 PMCID: PMC10263156 DOI: 10.1242/dev.201531] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/10/2023] [Indexed: 03/29/2023]
Abstract
Transgenesis is an essential technique for any genetic model. Tol2-based transgenesis paired with Gateway-compatible vector collections has transformed zebrafish transgenesis with an accessible modular system. Here, we establish several next-generation transgenesis tools for zebrafish and other species to expand and enhance transgenic applications. To facilitate gene regulatory element testing, we generated Gateway middle entry vectors harboring the small mouse beta-globin minimal promoter coupled to several fluorophores, CreERT2 and Gal4. To extend the color spectrum for transgenic applications, we established middle entry vectors encoding the bright, blue-fluorescent protein mCerulean and mApple as an alternative red fluorophore. We present a series of p2A peptide-based 3' vectors with different fluorophores and subcellular localizations to co-label cells expressing proteins of interest. Finally, we established Tol2 destination vectors carrying the zebrafish exorh promoter driving different fluorophores as a pineal gland-specific transgenesis marker that is active before hatching and through adulthood. exorh-based reporters and transgenesis markers also drive specific pineal gland expression in the eye-less cavefish (Astyanax). Together, our vectors provide versatile reagents for transgenesis applications in zebrafish, cavefish and other models.
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Affiliation(s)
- Cassie L. Kemmler
- University of Colorado, School of Medicine, Anschutz Medical Campus, Department of Pediatrics, Section of Developmental Biology, 12801 E 17th Avenue, Aurora, CO 80045, USA
| | - Hannah R. Moran
- University of Colorado, School of Medicine, Anschutz Medical Campus, Department of Pediatrics, Section of Developmental Biology, 12801 E 17th Avenue, Aurora, CO 80045, USA
| | - Brooke F. Murray
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
| | - Aaron Scoresby
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
| | - John R. Klem
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Rachel L. Eckert
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Elizabeth Lepovsky
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Sylvain Bertho
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - Susan Nieuwenhuize
- University of Colorado, School of Medicine, Anschutz Medical Campus, Department of Pediatrics, Section of Developmental Biology, 12801 E 17th Avenue, Aurora, CO 80045, USA
- Department of Molecular Life Sciences, University of Zurich, 8057 Zürich, Switzerland
| | - Sibylle Burger
- Department of Molecular Life Sciences, University of Zurich, 8057 Zürich, Switzerland
| | - Gianluca D'Agati
- Department of Molecular Life Sciences, University of Zurich, 8057 Zürich, Switzerland
| | - Charles Betz
- Growth & Development, Biozentrum, Spitalstrasse 41, University of Basel, 4056 Basel, Switzerland
| | - Ann-Christin Puller
- Department of Molecular Life Sciences, University of Zurich, 8057 Zürich, Switzerland
| | - Anastasia Felker
- Department of Molecular Life Sciences, University of Zurich, 8057 Zürich, Switzerland
| | - Karolina Ditrychova
- Department of Molecular Life Sciences, University of Zurich, 8057 Zürich, Switzerland
| | - Seraina Bötschi
- Department of Molecular Life Sciences, University of Zurich, 8057 Zürich, Switzerland
| | - Markus Affolter
- Growth & Development, Biozentrum, Spitalstrasse 41, University of Basel, 4056 Basel, Switzerland
| | - Nicolas Rohner
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - C. Ben Lovely
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Kristen M. Kwan
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
| | - Alexa Burger
- University of Colorado, School of Medicine, Anschutz Medical Campus, Department of Pediatrics, Section of Developmental Biology, 12801 E 17th Avenue, Aurora, CO 80045, USA
| | - Christian Mosimann
- University of Colorado, School of Medicine, Anschutz Medical Campus, Department of Pediatrics, Section of Developmental Biology, 12801 E 17th Avenue, Aurora, CO 80045, USA
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Forrest K, Barricella AC, Pohar SA, Hinman AM, Amack JD. Understanding laterality disorders and the left-right organizer: Insights from zebrafish. Front Cell Dev Biol 2022; 10:1035513. [PMID: 36619867 PMCID: PMC9816872 DOI: 10.3389/fcell.2022.1035513] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
Vital internal organs display a left-right (LR) asymmetric arrangement that is established during embryonic development. Disruption of this LR asymmetry-or laterality-can result in congenital organ malformations. Situs inversus totalis (SIT) is a complete concordant reversal of internal organs that results in a low occurrence of clinical consequences. Situs ambiguous, which gives rise to Heterotaxy syndrome (HTX), is characterized by discordant development and arrangement of organs that is associated with a wide range of birth defects. The leading cause of health problems in HTX patients is a congenital heart malformation. Mutations identified in patients with laterality disorders implicate motile cilia in establishing LR asymmetry. However, the cellular and molecular mechanisms underlying SIT and HTX are not fully understood. In several vertebrates, including mouse, frog and zebrafish, motile cilia located in a "left-right organizer" (LRO) trigger conserved signaling pathways that guide asymmetric organ development. Perturbation of LRO formation and/or function in animal models recapitulates organ malformations observed in SIT and HTX patients. This provides an opportunity to use these models to investigate the embryological origins of laterality disorders. The zebrafish embryo has emerged as an important model for investigating the earliest steps of LRO development. Here, we discuss clinical characteristics of human laterality disorders, and highlight experimental results from zebrafish that provide insights into LRO biology and advance our understanding of human laterality disorders.
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Affiliation(s)
- Kadeen Forrest
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Alexandria C. Barricella
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Sonny A. Pohar
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Anna Maria Hinman
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Jeffrey D. Amack
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse, NY, United States
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7
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Menon T, Burdine RD. A twist in Pitx2 regulation of gut looping. Dev Cell 2022; 57:2445-2446. [DOI: 10.1016/j.devcel.2022.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Nodal signaling regulates asymmetric cellular behaviors, driving clockwise rotation of the heart tube in zebrafish. Commun Biol 2022; 5:996. [PMID: 36131094 PMCID: PMC9492702 DOI: 10.1038/s42003-022-03826-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 08/09/2022] [Indexed: 11/09/2022] Open
Abstract
Clockwise rotation of the primitive heart tube, a process regulated by restricted left-sided Nodal signaling, is the first morphological manifestation of left-right asymmetry. How Nodal regulates cell behaviors to drive asymmetric morphogenesis remains poorly understood. Here, using high-resolution live imaging of zebrafish embryos, we simultaneously visualized cellular dynamics underlying early heart morphogenesis and resulting changes in tissue shape, to identify two key cell behaviors: cell rearrangement and cell shape change, which convert initially flat heart primordia into a tube through convergent extension. Interestingly, left cells were more active in these behaviors than right cells, driving more rapid convergence of the left primordium, and thereby rotating the heart tube. Loss of Nodal signaling abolished the asymmetric cell behaviors as well as the asymmetric convergence of the left and right heart primordia. Collectively, our results demonstrate that Nodal signaling regulates the magnitude of morphological changes by acting on basic cellular behaviors underlying heart tube formation, driving asymmetric deformation and rotation of the heart tube.
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Derrick CJ, Santos-Ledo A, Eley L, Paramita IA, Henderson DJ, Chaudhry B. Sequential action of JNK genes establishes the embryonic left-right axis. Development 2022; 149:274898. [PMID: 35352808 PMCID: PMC9148569 DOI: 10.1242/dev.200136] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 03/09/2022] [Indexed: 12/22/2022]
Abstract
The establishment of the left-right axis is crucial for the placement, morphogenesis and function of internal organs. Left-right specification is proposed to be dependent on cilia-driven fluid flow in the embryonic node. Planar cell polarity (PCP) signalling is crucial for patterning of nodal cilia, yet downstream effectors driving this process remain elusive. We have examined the role of the JNK gene family, a proposed downstream component of PCP signalling, in the development and function of the zebrafish node. We show jnk1 and jnk2 specify length of nodal cilia, generate flow in the node and restrict southpaw to the left lateral plate mesoderm. Moreover, loss of asymmetric southpaw expression does not result in disturbances to asymmetric organ placement, supporting a model in which nodal flow may be dispensable for organ laterality. Later, jnk3 is required to restrict pitx2c expression to the left side and permit correct endodermal organ placement. This work uncovers multiple roles for the JNK gene family acting at different points during left-right axis establishment. It highlights extensive redundancy and indicates JNK activity is distinct from the PCP signalling pathway.
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Affiliation(s)
- Christopher J Derrick
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Adrian Santos-Ledo
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Lorraine Eley
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Isabela Andhika Paramita
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Deborah J Henderson
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Bill Chaudhry
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
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Wang Y, Yu Z, Fan Z, Fang Y, He L, Peng M, Chen Y, Hu Z, Zhao K, Zhang H, Liu C. Cardiac developmental toxicity and transcriptome analyses of zebrafish (Danio rerio) embryos exposed to Mancozeb. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 226:112798. [PMID: 34592528 DOI: 10.1016/j.ecoenv.2021.112798] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/12/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
Mancozeb (MZ), an antibacterial pesticide, has been linked to reproductive toxicity, neurotoxicity, and endocrine disruption. However, whether MZ has cardiactoxicity is unclear. In this study, the cardiotoxic effects of exposure to environment-related MZ concentrations ranging from 1.88 μM to 7.52 μM were evaluated at the larval stage of zebrafish. Transcriptome sequencing predicted the mechanism of MZ-induced cardiac developmental toxicity in zebrafish by enrichment analysis of Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO). Consistent with morphological changes, the osm, pfkfb3, foxh1, stc1, and nrarpb genes may effect normal development of zebrafish heart by activating NOTCH signaling pathways, resulting in pericardial edema, myocardial fibrosis, and congestion in the heart area. Moreover, differential gene expression analysis indicated that cyp-related genes (cyp1c2 and cyp3c3) were significantly upregulated after MZ treatment, which may be related to apoptosis of myocardial cells. These results were verified by real-time quantitative RT-qPCR and acridine orange staining. Our findings suggest that MZ-mediated cardiotoxic development of zebrafish larvae may be related to the activation of Notch and apoptosis-related signaling pathways.
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Affiliation(s)
- Yongfeng Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Zhiquan Yu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Zunpan Fan
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Yiwei Fang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Liting He
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Meili Peng
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Yuanyao Chen
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Zhiyong Hu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Kai Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Huiping Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
| | - Chunyan Liu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei 430030, PR China.
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11
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Yadav ML, Ranjan P, Das P, Jain D, Kumar A, Mohapatra B. Implication of rare genetic variants of NODAL and ACVR1B in congenital heart disease patients from Indian population. Exp Cell Res 2021; 409:112869. [PMID: 34666056 DOI: 10.1016/j.yexcr.2021.112869] [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: 05/10/2021] [Revised: 09/10/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022]
Abstract
NODAL signaling plays an essential role in vertebrate embryonic patterning and heart development. Accumulating evidences suggest that genetic mutations in TGF-β/NODAL signaling pathway can cause congenital heart disease in humans. To investigate the implication of NODAL signaling in isolated cardiovascular malformation, we have screened 300 non-syndromic CHD cases and 200 controls for NODAL and ACVR1B by Sanger sequencing and identified two rare missense (c.152C > T; p.P51L and c.981 T > A; p.D327E) variants in NODAL and a novel missense variant c.1035G > A; p.M345I in ACVR1B. All these variants are absent in 200 controls. Three-dimensional protein-modelling demonstrates that both p.P51L and p.D327E variations of NODAL and p.M345I mutation of ACVR1B, affect the tertiary structure of respective proteins. Variants of NODAL (p.P51L and p.D327E) and ACVR1B (p.M345I), significantly reduce the transactivation of AR3-Luc, (CAGA)12-Luc and (SBE)4-Luc promoters. Moreover, qRT-PCR results have also deciphered a reduction in the expression of cardiac-enriched transcription factors namely Gata4, Nkx2-5, and Tbx5 in both the mutants of NODAL. Decreased expression of, Gata4, Nkx2-5, Tbx5, and lefty is observed in p.M345I mutant of ACVR1B as well. Additionally, reduced phosphorylation of SMAD2/3 in response to these variants, suggests impaired NODAL signaling and possibly responsible for defective cell fate decision and differentiation of cardiomyocytes leading to CHD phenotype.
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Affiliation(s)
- Manohar Lal Yadav
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Prashant Ranjan
- Center of Genetic Disorders, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Parimal Das
- Center of Genetic Disorders, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Dharmendra Jain
- Department of Cardiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ashok Kumar
- Department of Pediatrics, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Bhagyalaxmi Mohapatra
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
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12
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Shewale B, Dubois N. Of form and function: Early cardiac morphogenesis across classical and emerging model systems. Semin Cell Dev Biol 2021; 118:107-118. [PMID: 33994301 PMCID: PMC8434962 DOI: 10.1016/j.semcdb.2021.04.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 12/31/2022]
Abstract
The heart is the earliest organ to develop during embryogenesis and is remarkable in its ability to function efficiently as it is being sculpted. Cardiac heart defects account for a high burden of childhood developmental disorders with many remaining poorly understood mechanistically. Decades of work across a multitude of model organisms has informed our understanding of early cardiac differentiation and morphogenesis and has simultaneously opened new and unanswered questions. Here we have synthesized current knowledge in the field and reviewed recent developments in the realm of imaging, bioengineering and genetic technology and ex vivo cardiac modeling that may be deployed to generate more holistic models of early cardiac morphogenesis, and by extension, new platforms to study congenital heart defects.
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Affiliation(s)
- Bhavana Shewale
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Nicole Dubois
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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13
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Smith KA, Uribe V. Getting to the Heart of Left-Right Asymmetry: Contributions from the Zebrafish Model. J Cardiovasc Dev Dis 2021; 8:64. [PMID: 34199828 PMCID: PMC8230053 DOI: 10.3390/jcdd8060064] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/28/2022] Open
Abstract
The heart is laterally asymmetric. Not only is it positioned on the left side of the body but the organ itself is asymmetric. This patterning occurs across scales: at the organism level, through left-right axis patterning; at the organ level, where the heart itself exhibits left-right asymmetry; at the cellular level, where gene expression, deposition of matrix and proteins and cell behaviour are asymmetric; and at the molecular level, with chirality of molecules. Defective left-right patterning has dire consequences on multiple organs; however, mortality and morbidity arising from disrupted laterality is usually attributed to complex cardiac defects, bringing into focus the particulars of left-right patterning of the heart. Laterality defects impact how the heart integrates and connects with neighbouring organs, but the anatomy of the heart is also affected because of its asymmetry. Genetic studies have demonstrated that cardiac asymmetry is influenced by left-right axis patterning and yet the heart also possesses intrinsic laterality, reinforcing the patterning of this organ. These inputs into cardiac patterning are established at the very onset of left-right patterning (formation of the left-right organiser) and continue through propagation of left-right signals across animal axes, asymmetric differentiation of the cardiac fields, lateralised tube formation and asymmetric looping morphogenesis. In this review, we will discuss how left-right asymmetry is established and how that influences subsequent asymmetric development of the early embryonic heart. In keeping with the theme of this issue, we will focus on advancements made through studies using the zebrafish model and describe how its use has contributed considerable knowledge to our understanding of the patterning of the heart.
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Affiliation(s)
- Kelly A. Smith
- Department of Physiology, The University of Melbourne, Parkville, VIC 3010, Australia;
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14
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Rafatian N, Vizely K, Al Asafen H, Korolj A, Radisic M. Drawing Inspiration from Developmental Biology for Cardiac Tissue Engineers. Adv Biol (Weinh) 2021; 5:e2000190. [PMID: 34008910 DOI: 10.1002/adbi.202000190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 12/21/2020] [Indexed: 12/17/2022]
Abstract
A sound understanding of developmental biology is part of the foundation of effective stem cell-derived tissue engineering. Here, the key concepts of cardiac development that are successfully applied in a bioinspired approach to growing engineered cardiac tissues, are reviewed. The native cardiac milieu is studied extensively from embryonic to adult phenotypes, as it provides a resource of factors, mechanisms, and protocols to consider when working toward establishing living tissues in vitro. It begins with the various cell types that constitute the cardiac tissue. It is discussed how myocytes interact with other cell types and their microenvironment and how they change over time from the embryonic to the adult states, with a view on how such changes affect the tissue function and may be used in engineered tissue models. Key embryonic signaling pathways that have been leveraged in the design of culture media and differentiation protocols are presented. The cellular microenvironment, from extracellular matrix chemical and physical properties, to the dynamic mechanical and electrical forces that are exerted on tissues is explored. It is shown that how such microenvironmental factors can inform the design of biomaterials, scaffolds, stimulation bioreactors, and maturation readouts, and suggest considerations for ongoing biomimetic advancement of engineered cardiac tissues and regeneration strategies for the future.
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Affiliation(s)
- Naimeh Rafatian
- Toronto General Research Institute, Toronto, Ontario, M5G 2C4, Canada
| | - Katrina Vizely
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, M5S 3E5, Canada
| | - Hadel Al Asafen
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, M5S 3E5, Canada
| | - Anastasia Korolj
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, M5S 3E5, Canada.,Institute of Biomaterials Engineering, University of Toronto, Toronto, Ontario, M5S 3G9, Canada
| | - Milica Radisic
- Toronto General Research Institute, Toronto, Ontario, M5G 2C4, Canada.,Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, M5S 3E5, Canada.,Institute of Biomaterials Engineering, University of Toronto, Toronto, Ontario, M5S 3G9, Canada
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15
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Goliusova DV, Klementieva NV, Panova AV, Mokrysheva NG, Kiselev SL. The Role of Genetic Factors in Endocrine Tissues Development and Its Regulation In Vivo and In Vitro. RUSS J GENET+ 2021. [DOI: 10.1134/s102279542103008x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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16
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Kemmler CL, Riemslagh FW, Moran HR, Mosimann C. From Stripes to a Beating Heart: Early Cardiac Development in Zebrafish. J Cardiovasc Dev Dis 2021; 8:17. [PMID: 33578943 PMCID: PMC7916704 DOI: 10.3390/jcdd8020017] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/05/2021] [Accepted: 02/07/2021] [Indexed: 12/18/2022] Open
Abstract
The heart is the first functional organ to form during vertebrate development. Congenital heart defects are the most common type of human birth defect, many originating as anomalies in early heart development. The zebrafish model provides an accessible vertebrate system to study early heart morphogenesis and to gain new insights into the mechanisms of congenital disease. Although composed of only two chambers compared with the four-chambered mammalian heart, the zebrafish heart integrates the core processes and cellular lineages central to cardiac development across vertebrates. The rapid, translucent development of zebrafish is amenable to in vivo imaging and genetic lineage tracing techniques, providing versatile tools to study heart field migration and myocardial progenitor addition and differentiation. Combining transgenic reporters with rapid genome engineering via CRISPR-Cas9 allows for functional testing of candidate genes associated with congenital heart defects and the discovery of molecular causes leading to observed phenotypes. Here, we summarize key insights gained through zebrafish studies into the early patterning of uncommitted lateral plate mesoderm into cardiac progenitors and their regulation. We review the central genetic mechanisms, available tools, and approaches for modeling congenital heart anomalies in the zebrafish as a representative vertebrate model.
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Affiliation(s)
| | | | | | - Christian Mosimann
- Department of Pediatrics, Section of Developmental Biology, University of Colorado School of Medicine and Children’s Hospital Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA; (C.L.K.); (F.W.R.); (H.R.M.)
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17
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Rahman T, Zhang H, Fan J, Wan LQ. Cell chirality in cardiovascular development and disease. APL Bioeng 2020; 4:031503. [PMID: 32903894 PMCID: PMC7449703 DOI: 10.1063/5.0014424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/11/2020] [Indexed: 12/15/2022] Open
Abstract
The cardiovascular system demonstrates left-right (LR) asymmetry: most notably, the LR asymmetric looping of the bilaterally symmetric linear heart tube. Similarly, the orientation of the aortic arch is asymmetric as well. Perturbations to the asymmetry have been associated with several congenital heart malformations and vascular disorders. The source of the asymmetry, however, is not clear. Cell chirality, a recently discovered and intrinsic LR asymmetric cellular morphological property, has been implicated in the heart looping and vascular barrier function. In this paper, we summarize recent advances in the field of cell chirality and describe various approaches developed for studying cell chirality at multi- and single-cell levels. We also examine research progress in asymmetric cardiovascular development and associated malformations. Finally, we review evidence connecting cell chirality to cardiac looping and vascular permeability and provide thoughts on future research directions for cell chirality in the context of cardiovascular development and disease.
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Affiliation(s)
- Tasnif Rahman
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Haokang Zhang
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Jie Fan
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
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18
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Patterson VL, Burdine RD. Swimming toward solutions: Using fish and frogs as models for understanding RASopathies. Birth Defects Res 2020; 112:749-765. [PMID: 32506834 DOI: 10.1002/bdr2.1707] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 04/25/2020] [Indexed: 12/16/2022]
Abstract
The RAS signaling pathway regulates cell growth, survival, and differentiation, and its inappropriate activation is associated with disease in humans. The RASopathies, a set of developmental syndromes, arise when the pathway is overactive during development. Patients share a core set of symptoms, including congenital heart disease, craniofacial anomalies, and neurocognitive delay. Due to the conserved nature of the pathway, animal models are highly informative for understanding disease etiology, and zebrafish and Xenopus are emerging as advantageous model systems. Here we discuss these aquatic models of RASopathies, which recapitulate many of the core symptoms observed in patients. Craniofacial structures become dysmorphic upon expression of disease-associated mutations, resulting in wider heads. Heart defects manifest as delays in cardiac development and changes in heart size, and behavioral deficits are beginning to be explored. Furthermore, early convergence and extension defects cause elongation of developing embryos: this phenotype can be quantitatively assayed as a readout of mutation strength, raising interesting questions regarding the relationship between pathway activation and disease. Additionally, the observation that RAS signaling may be simultaneously hyperactive and attenuated suggests that downregulation of signaling may also contribute to etiology. We propose that models should be characterized using a standardized approach to allow easier comparison between models, and a better understanding of the interplay between mutation and disease presentation.
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Affiliation(s)
- Victoria L Patterson
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
| | - Rebecca D Burdine
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
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19
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Kawahira N, Ohtsuka D, Kida N, Hironaka KI, Morishita Y. Quantitative Analysis of 3D Tissue Deformation Reveals Key Cellular Mechanism Associated with Initial Heart Looping. Cell Rep 2020; 30:3889-3903.e5. [DOI: 10.1016/j.celrep.2020.02.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 08/01/2019] [Accepted: 02/18/2020] [Indexed: 12/18/2022] Open
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20
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Wei W, Li B, Li F, Sun K, Jiang X, Xu R. Identification of FOXH1 mutations in patients with sporadic conotruncal heart defect. Clin Genet 2020; 97:576-585. [PMID: 32003456 DOI: 10.1111/cge.13710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 11/26/2022]
Abstract
Conotruncal heart defects (CTD) are an important subtype of congenital heart disease that occur due to abnormality in the development of the cardiac outflow tract (OFT). FOXH1 is a transcription factor that participates in the morphogenesis of the right ventricle and OFT. In this study, we confirmed the expression of FOXH1 in mouse and human embryos during OFT development. We also scanned the coding exons and splicing regions of the FOXH1 gene in 605 patients with sporadic CTD and 300 unaffected controls, from which we identified seven heterozygous FOXH1 gene mutations. According to bioinformatics analysis results, they were predicted potentially deleterious at conserved amino acid sites. Western blot was used to show that all the variants decreased the expression of FOXH1 protein, while dual-luciferase reporter assay showed that six of them, with an exception of p.P35R, had enhanced abilities to modulate the expression of MEF2C, which interacts with NKX2.5 and is involved in cardiac growth. The electrophoretic mobility shift assays result showed that two mutations altered DNA-binding abilities of mutant FOXH1 proteins. Phenotype heterogeneity was found in patients with the same mutation. These results indicate that FOXH1 mutations lead to disease-causing functional changes that contribute to the occurrence of CTD.
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Affiliation(s)
- Wei Wei
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bojian Li
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fen Li
- Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kun Sun
- Department of Pediatric Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xuechao Jiang
- Scientific Research Center, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University School, Shanghai, China
| | - Rang Xu
- Scientific Research Center, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University School, Shanghai, China
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21
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Left-right asymmetric heart jogging increases the robustness of dextral heart looping in zebrafish. Dev Biol 2019; 459:79-86. [PMID: 31758943 DOI: 10.1016/j.ydbio.2019.11.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 11/18/2019] [Accepted: 11/19/2019] [Indexed: 12/31/2022]
Abstract
Building a left-right (L-R) asymmetric organ requires asymmetric information. This comes from various sources, including asymmetries in embryo-scale genetic cascades (including the left-sided Nodal cascade), organ-intrinsic mechanical forces, and cell-level chirality, but the relative influence of these sources and how they collaborate to drive asymmetric morphogenesis is not understood. During zebrafish heart development, the linear heart tube extends to the left of the midline in a process known as jogging. The jogged heart then undergoes dextral (i.e. rightward) looping to correctly position the heart chambers relative to one another. Left lateralized jogging is governed by the left-sided expression of Nodal in mesoderm tissue, while looping laterality is mainly controlled by heart-intrinsic cell-level asymmetries in the actomyosin cytoskeleton. The purpose of lateralized jogging is not known. Moreover, after jogging, the heart tube returns to an almost midline position and so it is not clear whether or how jogging may impact the dextral loop. Here, we characterize a novel loss-of-function mutant in the zebrafish Nodal homolog southpaw (spaw) that appears to be a true null. We then assess the relationship between jogging and looping laterality in embryos lacking asymmetric Spaw signals. We found that the probability of a dextral loop occurring, does not depend on asymmetric Spaw signals per se, but does depend on the laterality of jogging. Thus, we conclude that the role of leftward jogging is to spatially position the heart tube in a manner that promotes robust dextral looping. When jogging laterality is abnormal, the robustness of dextral looping decreases. This establishes a cooperation between embryo-scale Nodal-dependent L-R asymmetries and organ-intrinsic cellular chirality in the control of asymmetric heart morphogenesis and shows that the transient laterality of the early heart tube has consequences for later heart morphogenetic events.
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22
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Lombardo VA, Heise M, Moghtadaei M, Bornhorst D, Männer J, Abdelilah-Seyfried S. Morphogenetic control of zebrafish cardiac looping by Bmp signaling. Development 2019; 146:dev.180091. [PMID: 31628109 DOI: 10.1242/dev.180091] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 10/15/2019] [Indexed: 12/23/2022]
Abstract
Cardiac looping is an essential and highly conserved morphogenetic process that places the different regions of the developing vertebrate heart tube into proximity of their final topographical positions. High-resolution 4D live imaging of mosaically labelled cardiomyocytes reveals distinct cardiomyocyte behaviors that contribute to the deformation of the entire heart tube. Cardiomyocytes acquire a conical cell shape, which is most pronounced at the superior wall of the atrioventricular canal and contributes to S-shaped bending. Torsional deformation close to the outflow tract contributes to a torque-like winding of the entire heart tube between its two poles. Anisotropic growth of cardiomyocytes based on their positions reinforces S-shaping of the heart. During cardiac looping, bone morphogenetic protein pathway signaling is strongest at the future superior wall of the atrioventricular canal. Upon pharmacological or genetic inhibition of bone morphogenetic protein signaling, myocardial cells at the superior wall of the atrioventricular canal maintain cuboidal cell shapes and S-shaped bending is impaired. This description of cellular rearrangements and cardiac looping regulation may also be relevant for understanding the etiology of human congenital heart defects.
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Affiliation(s)
- Verónica A Lombardo
- Instituto de Biología Molecular y Celular de Rosario, Consejo Nacional de Investigaciones Científicas y Técnicas and Universidad Nacional de Rosario, 2000 Rosario, Argentina .,Centro de Estudios Interdisciplinarios, Universidad Nacional de Rosario, 2000 Rosario, Argentina
| | - Melina Heise
- Institute of Molecular Biology, Hannover Medical School, D-30625 Hannover, Germany
| | - Motahareh Moghtadaei
- Institute of Molecular Biology, Hannover Medical School, D-30625 Hannover, Germany.,Institute of Biochemistry and Biology, Potsdam University, D-14476 Potsdam, Germany
| | - Dorothee Bornhorst
- Institute of Molecular Biology, Hannover Medical School, D-30625 Hannover, Germany.,Institute of Biochemistry and Biology, Potsdam University, D-14476 Potsdam, Germany
| | - Jörg Männer
- Institute of Anatomy and Embryology, UMG, Göttingen University, D-37075 Göttingen, Germany
| | - Salim Abdelilah-Seyfried
- Institute of Molecular Biology, Hannover Medical School, D-30625 Hannover, Germany .,Institute of Biochemistry and Biology, Potsdam University, D-14476 Potsdam, Germany
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23
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Abstract
Consistent asymmetries between the left and right sides of animal bodies are common. For example, the internal organs of vertebrates are left-right (L-R) asymmetric in a stereotyped fashion. Other structures, such as the skeleton and muscles, are largely symmetric. This Review considers how symmetries and asymmetries form alongside each other within the embryo, and how they are then maintained during growth. I describe how asymmetric signals are generated in the embryo. Using the limbs and somites as major examples, I then address mechanisms for protecting symmetrically forming tissues from asymmetrically acting signals. These examples reveal that symmetry should not be considered as an inherent background state, but instead must be actively maintained throughout multiple phases of embryonic patterning and organismal growth.
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Affiliation(s)
- Daniel T Grimes
- Institute of Molecular Biology, Department of Biology, University of Oregon, Eugene, OR 97403, USA
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24
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Sempou E, Khokha MK. Genes and mechanisms of heterotaxy: patients drive the search. Curr Opin Genet Dev 2019; 56:34-40. [PMID: 31234044 DOI: 10.1016/j.gde.2019.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 05/03/2019] [Accepted: 05/11/2019] [Indexed: 12/17/2022]
Abstract
Heterotaxy, a disorder in which visceral organs, including the heart, are mispatterned along the left-right body axis, contributes to particularly severe forms of congenital heart disease that are difficult to mitigate even despite surgical advances. A higher incidence of heterotaxy among individuals with blood kinship and the existence of rare monogenic disease forms suggest the existence of a genetic component, but the genetic and phenotypic heterogeneity of the disease have rendered gene discovery challenging. Next generation genomics in patients with syndromic, but also non-syndromic and sporadic heterotaxy, have recently helped to uncover new candidate disease genes, expanding the pool of genes already identified via traditional animal studies. Further characterization of these new genes in animal models has uncovered fascinating mechanisms of left-right axis development. In this review, we will discuss recent findings on the functions of heterotaxy genes with identified patient alleles.
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Affiliation(s)
- Emily Sempou
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, United States.
| | - Mustafa K Khokha
- Pediatric Genomics Discovery Program, Department of Pediatrics and Genetics, Yale University School of Medicine, United States
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25
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Ray P, Chin AS, Worley KE, Fan J, Kaur G, Wu M, Wan LQ. Intrinsic cellular chirality regulates left-right symmetry breaking during cardiac looping. Proc Natl Acad Sci U S A 2018; 115:E11568-E11577. [PMID: 30459275 PMCID: PMC6294912 DOI: 10.1073/pnas.1808052115] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The vertebrate body plan is overall symmetrical but left-right (LR) asymmetric in the shape and positioning of internal organs. Although several theories have been proposed, the biophysical mechanisms underlying LR asymmetry are still unclear, especially the role of cell chirality, the LR asymmetry at the cellular level, on organ asymmetry. Here with developing chicken embryos, we examine whether intrinsic cell chirality or handedness regulates cardiac C looping. Using a recently established biomaterial-based 3D culture platform, we demonstrate that chick cardiac cells before and during C looping are intrinsically chiral and exhibit dominant clockwise rotation in vitro. We further show that cells in the developing myocardium are chiral as evident by a rightward bias of cell alignment and a rightward polarization of the Golgi complex, correlating with the direction of cardiac tube rotation. In addition, there is an LR polarized distribution of N-cadherin and myosin II in the myocardium before the onset of cardiac looping. More interestingly, the reversal of cell chirality via activation of the protein kinase C signaling pathway reverses the directionality of cardiac looping, accompanied by a reversal in cellular biases on the cardiac tube. Our results suggest that myocardial cell chirality regulates cellular LR symmetry breaking in the heart tube and the resultant directionality of cardiac looping. Our study provides evidence of an intrinsic cellular chiral bias leading to LR symmetry breaking during directional tissue rotation in vertebrate development.
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Affiliation(s)
- Poulomi Ray
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180
- Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Amanda S Chin
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180
- Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Kathryn E Worley
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180
- Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Jie Fan
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180
- Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Gurleen Kaur
- Department of Biology, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Mingfu Wu
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208
| | - Leo Q Wan
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180;
- Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180
- Department of Biology, Rensselaer Polytechnic Institute, Troy, NY 12180
- Center for Modeling, Simulation and Imaging in Medicine, Rensselaer Polytechnic Institute, Troy, NY 12180
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26
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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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27
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Courtney JA, Cnota JF, Jones HN. The Role of Abnormal Placentation in Congenital Heart Disease; Cause, Correlate, or Consequence? Front Physiol 2018; 9:1045. [PMID: 30131711 PMCID: PMC6091057 DOI: 10.3389/fphys.2018.01045] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/13/2018] [Indexed: 01/11/2023] Open
Abstract
Congenital heart disease (CHD) is the most common birth defect, affecting ~1% of all live births (van der Linde et al., 2011). Despite improvements in clinical care, it is the leading cause of infant mortality related to birth defects (Yang et al., 2006) and burdens survivors with significant morbidity (Gilboa et al., 2016). Furthermore, CHD accounts for the largest proportion (26.7%) of birth defect-associated hospitalization costs—up to $6.1 billion in 2013 (Arth et al., 2017). Yet after decades of research with a primary focus on genetic etiology, the underlying cause of these defects remains unknown in the majority of cases (Zaidi and Brueckner, 2017). Unexplained CHD may be secondary to undiscovered roles of noncoding genetic, epigenetic, and environmental factors, among others (Russell et al., 2018). Population studies have recently demonstrated that pregnancies complicated by CHD also carry a higher risk of developing pathologies associated with an abnormal placenta including growth disturbances (Puri et al., 2017), preeclampsia (Auger et al., 2015; Brodwall et al., 2016), preterm birth (Laas et al., 2012), and stillbirth (Jorgensen et al., 2014). Both the heart and placenta are vascular organs and develop concurrently; therefore, shared pathways almost certainly direct the development of both. The involvement of placental abnormalities in congenital heart disease, whether causal, commensurate or reactive, is under investigated and given the common developmental window and shared developmental pathways of the heart and placenta and concurrent vasculature development, we propose that further investigation combining clinical data, in vitro, in vivo, and computer modeling is fundamental to our understanding and the potential to develop therapeutics.
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Affiliation(s)
- Jennifer A Courtney
- Molecular and Developmental Biology Graduate Program, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Division of General Pediatric and Thoracic Surgery, Center for Fetal and Placental Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - James F Cnota
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Helen N Jones
- Division of General Pediatric and Thoracic Surgery, Center for Fetal and Placental Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
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28
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Signore IA, Palma K, Concha ML. Nodal signalling and asymmetry of the nervous system. Philos Trans R Soc Lond B Biol Sci 2017; 371:rstb.2015.0401. [PMID: 27821531 DOI: 10.1098/rstb.2015.0401] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2016] [Indexed: 11/12/2022] Open
Abstract
The role of Nodal signalling in nervous system asymmetry is still poorly understood. Here, we review and discuss how asymmetric Nodal signalling controls the ontogeny of nervous system asymmetry using a comparative developmental perspective. A detailed analysis of asymmetry in ascidians and fishes reveals a critical context-dependency of Nodal function and emphasizes that bilaterally paired and midline-unpaired structures/organs behave as different entities. We propose a conceptual framework to dissect the developmental function of Nodal as asymmetry inducer and laterality modulator in the nervous system, which can be used to study other types of body and visceral organ asymmetries. Using insights from developmental biology, we also present novel evolutionary hypotheses on how Nodal led the evolution of directional asymmetry in the brain, with a particular focus on the epithalamus. We intend this paper to provide a synthesis on how Nodal signalling controls left-right asymmetry of the nervous system.This article is part of the themed issue 'Provocative questions in left-right asymmetry'.
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Affiliation(s)
- Iskra A Signore
- Anatomy and Developmental Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, PO Box 70031, Santiago, Chile.,Biomedical Neuroscience Institute, Independencia 1027, Santiago, Chile
| | - Karina Palma
- Anatomy and Developmental Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, PO Box 70031, Santiago, Chile.,Biomedical Neuroscience Institute, Independencia 1027, Santiago, Chile
| | - Miguel L Concha
- Anatomy and Developmental Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, PO Box 70031, Santiago, Chile .,Biomedical Neuroscience Institute, Independencia 1027, Santiago, Chile.,Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
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Sadler TW. Establishing the Embryonic Axes: Prime Time for Teratogenic Insults. J Cardiovasc Dev Dis 2017; 4:E15. [PMID: 29367544 PMCID: PMC5715709 DOI: 10.3390/jcdd4030015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 01/21/2023] Open
Abstract
A long standing axiom in the field of teratology states that the teratogenic period, when most birth defects are produced, occurs during the third to eighth weeks of development post-fertilization. Any insults prior to this time are thought to result in a slowing of embryonic growth from which the conceptus recovers or death of the embryo followed by spontaneous abortion. However, new insights into embryonic development during the first two weeks, including formation of the anterior-posterior, dorsal-ventral, and left-right axes, suggests that signaling pathways regulating these processes are prime targets for genetic and toxic insults. Establishment of the left-right (laterality) axis is particularly sensitive to disruption at very early stages of development and these perturbations result in a wide variety of congenital malformations, especially heart defects. Thus, the time for teratogenic insults resulting in birth defects should be reset to include the first two weeks of development.
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Affiliation(s)
- Thomas W Sadler
- Senior Fellow, Greenwood Genetics Center, Greenwood, SC 29646, USA.
- Department of Pediatrics, University of Utah, Salt Lake City, UT 84108, USA.
- Department of Anatomy, Quillen College of Medicine, East Tennessee State University, Johnson, TN 37614, USA.
- 78 Lemon Gulch Lane, Sheridan, MT 59749, USA.
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Chai H, Yan Z, Huang K, Jiang Y, Zhang L. MicroRNA expression, target genes, and signaling pathways in infants with a ventricular septal defect. Mol Cell Biochem 2017; 439:171-187. [PMID: 28822034 DOI: 10.1007/s11010-017-3146-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/02/2017] [Indexed: 10/19/2022]
Abstract
This study aimed to systematically investigate the relationship between miRNA expression and the occurrence of ventricular septal defect (VSD), and characterize the miRNA target genes and pathways that can lead to VSD. The miRNAs that were differentially expressed in blood samples from VSD and normal infants were screened and validated by implementing miRNA microarrays and qRT-PCR. The target genes regulated by differentially expressed miRNAs were predicted using three target gene databases. The functions and signaling pathways of the target genes were enriched using the GO database and KEGG database, respectively. The transcription and protein expression of specific target genes in critical pathways were compared in the VSD and normal control groups using qRT-PCR and western blotting, respectively. Compared with the normal control group, the VSD group had 22 differentially expressed miRNAs; 19 were downregulated and three were upregulated. The 10,677 predicted target genes participated in many biological functions related to cardiac development and morphogenesis. Four target genes (mGLUR, Gq, PLC, and PKC) were involved in the PKC pathway and four (ECM, FAK, PI3 K, and PDK1) were involved in the PI3 K-Akt pathway. The transcription and protein expression of these eight target genes were significantly upregulated in the VSD group. The 22 miRNAs that were dysregulated in the VSD group were mainly downregulated, which may result in the dysregulation of several key genes and biological functions related to cardiac development. These effects could also be exerted via the upregulation of eight specific target genes, the subsequent over-activation of the PKC and PI3 K-Akt pathways, and the eventual abnormal cardiac development and VSD.
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Affiliation(s)
- Hui Chai
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang Province, China
| | - Zhaoyuan Yan
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang Province, China
| | - Ke Huang
- Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang Province, China
| | | | - Lin Zhang
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang Province, China.
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31
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Palmquist K, Davidson B. Establishment of lateral organ asymmetries in the invertebrate chordate, Ciona intestinalis. EvoDevo 2017; 8:12. [PMID: 28770040 PMCID: PMC5526266 DOI: 10.1186/s13227-017-0075-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 07/17/2017] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The evolutionary emergence and diversification of the chordates appear to involve dramatic changes in organ morphogenesis along the left/right axis. However, the ancestral chordate mechanism for establishing lateral asymmetry remains ambiguous. Additionally, links between the initial establishment of lateral asymmetry and subsequent asymmetries in organ morphogenesis are poorly characterized. RESULTS To explore asymmetric organ morphogenesis during chordate evolution, we have begun to characterize left/right patterning of the heart and endodermal organs in an invertebrate chordate, Ciona intestinalis. Here, we show that Ciona has a laterally asymmetric, right-sided heart. Our data indicate that cardiac lateral asymmetry requires H+/K+ ion flux, but is independent of Nodal signaling. Our pharmacological inhibitor studies show that ion flux is required for polarization of epidermal cilia and neurula rotation and suggest that ion flux functions synergistically with chorion contact to drive cardiac laterality. Live imaging analysis revealed that larval heart progenitor cells undergo a lateral shift without displaying any migratory behaviors. Furthermore, we find that this passive shift corresponds with the emergence of lateral asymmetry in the endoderm, which is also ion flux dependent. CONCLUSIONS Our data suggest that ion flux promotes laterally asymmetric morphogenesis of the larval endoderm rudiment leading to a passive, Nodal-independent shift in the position of associated heart progenitor cells. These findings help to refine hypotheses regarding ancestral chordate left/right patterning mechanisms and how they have diverged within invertebrate and vertebrate chordate lineages.
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Affiliation(s)
- Karl Palmquist
- Department of Biology, Swarthmore College, 500 College Ave., Swarthmore, PA 19081 USA
| | - Brad Davidson
- Department of Biology, Swarthmore College, 500 College Ave., Swarthmore, PA 19081 USA
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Grimes DT, Burdine RD. Left-Right Patterning: Breaking Symmetry to Asymmetric Morphogenesis. Trends Genet 2017; 33:616-628. [PMID: 28720483 DOI: 10.1016/j.tig.2017.06.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/15/2017] [Accepted: 06/20/2017] [Indexed: 10/19/2022]
Abstract
Vertebrates exhibit striking left-right (L-R) asymmetries in the structure and position of the internal organs. Symmetry is broken by motile cilia-generated asymmetric fluid flow, resulting in a signaling cascade - the Nodal-Pitx2 pathway - being robustly established within mesodermal tissue on the left side only. This pathway impinges upon various organ primordia to instruct their side-specific development. Recently, progress has been made in understanding both the breaking of embryonic L-R symmetry and how the Nodal-Pitx2 pathway controls lateralized cell differentiation, migration, and other aspects of cell behavior, as well as tissue-level mechanisms, that drive asymmetries in organ formation. Proper execution of asymmetric organogenesis is critical to health, making furthering our understanding of L-R development an important concern.
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Affiliation(s)
- Daniel T Grimes
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA.
| | - Rebecca D Burdine
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA.
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Grant MG, Patterson VL, Grimes DT, Burdine RD. Modeling Syndromic Congenital Heart Defects in Zebrafish. Curr Top Dev Biol 2017; 124:1-40. [DOI: 10.1016/bs.ctdb.2016.11.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Current Perspectives in Cardiac Laterality. J Cardiovasc Dev Dis 2016; 3:jcdd3040034. [PMID: 29367577 PMCID: PMC5715725 DOI: 10.3390/jcdd3040034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/23/2016] [Accepted: 12/05/2016] [Indexed: 12/16/2022] Open
Abstract
The heart is the first organ to break symmetry in the developing embryo and onset of dextral looping is the first indication of this event. Looping is a complex process that progresses concomitantly to cardiac chamber differentiation and ultimately leads to the alignment of the cardiac regions in their final topology. Generation of cardiac asymmetry is crucial to ensuring proper form and consequent functionality of the heart, and therefore it is a highly regulated process. It has long been known that molecular left/right signals originate far before morphological asymmetry and therefore can direct it. The use of several animal models has led to the characterization of a complex regulatory network, which invariably converges on the Tgf-β signaling molecule Nodal and its downstream target, the homeobox transcription factor Pitx2. Here, we review current data on the cellular and molecular bases of cardiac looping and laterality, and discuss the contribution of Nodal and Pitx2 to these processes. A special emphasis will be given to the morphogenetic role of Pitx2 and to its modulation of transcriptional and functional properties, which have also linked laterality to atrial fibrillation.
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Abstract
The transforming growth factor-β (TGF-β) family of ligands elicit their biological effects by initiating new programs of gene expression. The best understood signal transducers for these ligands are the SMADs, which essentially act as transcription factors that are activated in the cytoplasm and then accumulate in the nucleus in response to ligand induction where they bind to enhancer/promoter sequences in the regulatory regions of target genes to either activate or repress transcription. This review focuses on the mechanisms whereby the SMADs achieve this and the functional implications. The SMAD complexes have weak affinity for DNA and limited specificity and, thus, they cooperate with other site-specific transcription factors that act either to actively recruit the SMAD complexes or to stabilize their DNA binding. In some situations, these cooperating transcription factors function to integrate the signals from TGF-β family ligands with environmental cues or with information about cell lineage. Activated SMAD complexes regulate transcription via remodeling of the chromatin template. Consistent with this, they recruit a variety of coactivators and corepressors to the chromatin, which either directly or indirectly modify histones and/or modulate chromatin structure.
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Affiliation(s)
- Caroline S Hill
- The Francis Crick Institute, Lincoln's Inn Fields Laboratory, London WC2A 3LY, United Kingdom
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36
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Ji Y, Buel SM, Amack JD. Mutations in zebrafish pitx2 model congenital malformations in Axenfeld-Rieger syndrome but do not disrupt left-right placement of visceral organs. Dev Biol 2016; 416:69-81. [PMID: 27297886 DOI: 10.1016/j.ydbio.2016.06.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 06/05/2016] [Accepted: 06/06/2016] [Indexed: 12/18/2022]
Abstract
Pitx2 is a conserved homeodomain transcription factor that has multiple functions during embryonic development. Mutations in human PITX2 cause autosomal dominant Axenfeld-Rieger syndrome (ARS), characterized by congenital eye and tooth malformations. Pitx2(-/-) knockout mouse models recapitulate aspects of ARS, but are embryonic lethal. To date, ARS treatments remain limited to managing individual symptoms due to an incomplete understanding of PITX2 function. In addition to regulating eye and tooth development, Pitx2 is a target of a conserved Nodal (TGFβ) signaling pathway that mediates left-right (LR) asymmetry of visceral organs. Based on its highly conserved asymmetric expression domain, the Nodal-Pitx2 axis has long been considered a common denominator of LR development in vertebrate embryos. However, functions of Pitx2 during asymmetric organ morphogenesis are not well understood. To gain new insight into Pitx2 function we used genome editing to create mutations in the zebrafish pitx2 gene. Mutations in the pitx2 homeodomain caused phenotypes reminiscent of ARS, including aberrant development of the cornea and anterior chamber of the eye and reduced or absent teeth. Intriguingly, LR asymmetric looping of the heart and gut was normal in pitx2 mutants. These results suggest conserved roles for Pitx2 in eye and tooth development and indicate Pitx2 is not required for asymmetric looping of zebrafish visceral organs. This work establishes zebrafish pitx2 mutants as a new animal model for investigating mechanisms underlying congenital malformations in ARS and high-throughput drug screening for ARS therapeutics. Additionally, pitx2 mutants present a unique opportunity to identify new genes involved in vertebrate LR patterning. We show Nodal signaling-independent of Pitx2-controls asymmetric expression of the fatty acid elongase elovl6 in zebrafish, pointing to a potential novel pathway during LR organogenesis.
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Affiliation(s)
- Yongchang Ji
- Department of Cell and Developmental Biology, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA
| | - Sharleen M Buel
- Department of Cell and Developmental Biology, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA
| | - Jeffrey D Amack
- Department of Cell and Developmental Biology, State University of New York, Upstate Medical University, Syracuse, NY 13210, USA.
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Abstract
The molecular mechanisms underlying cardiogenesis are of critical biomedical importance due to the high prevalence of cardiac birth defects. Over the past two decades, the zebrafish has served as a powerful model organism for investigating heart development, facilitated by its powerful combination of optical access to the embryonic heart and plentiful opportunities for genetic analysis. Work in zebrafish has identified numerous factors that are required for various aspects of heart formation, including the specification and differentiation of cardiac progenitor cells, the morphogenesis of the heart tube, cardiac chambers, and atrioventricular canal, and the establishment of proper cardiac function. However, our current roster of regulators of cardiogenesis is by no means complete. It is therefore valuable for ongoing studies to continue pursuit of additional genes and pathways that control the size, shape, and function of the zebrafish heart. An extensive arsenal of techniques is available to distinguish whether particular mutations, morpholinos, or small molecules disrupt specific processes during heart development. In this chapter, we provide a guide to the experimental strategies that are especially effective for the characterization of cardiac phenotypes in the zebrafish embryo.
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Affiliation(s)
- A R Houk
- University of California, San Diego, CA, United States
| | - D Yelon
- University of California, San Diego, CA, United States
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Genetics of Congenital Heart Defects: The NKX2-5 Gene, a Key Player. Genes (Basel) 2016; 7:genes7020006. [PMID: 26805889 PMCID: PMC4773750 DOI: 10.3390/genes7020006] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/11/2016] [Accepted: 01/19/2016] [Indexed: 02/07/2023] Open
Abstract
Congenital heart defects (CHDs) represent the biggest fraction of morbid congenital anomalies worldwide. Owing to their complex inheritance patterns and multifactorial etiologies, these defects are difficult to identify before complete manifestation. Research over the past two decades has established firmly the role of genetics in the development of these congenital defects. While syndromic CHDs are more straightforward, non-syndromic CHDs are usually characterized by multiple mutations that affect intricate inter-connected developmental pathways. Knock-out and gene expression studies in mice and other genetic models have been performed to elucidate the roles of these implicated genes. Functional analysis has not been able to resolve the complete picture, as increasingly more downstream effects are continuously being assigned to CHD mutant factors. NKX2-5, a cardiac transcription factor, has received much attention for its role in cardiac dysmorphogenesis. Approximately 50 different mutations in this gene have been identified to date, and only a few have been functionally characterized. The mutant NKX2-5 factor can regulate a number of off-targets downstream to facilitate CHD development. This review summarizes the genetic etiology of congenital heart defects and emphasizes the need for NKX2-5 mutation screening.
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Ketharnathan S, Koshy T, Sethuratnam R, Paul S, Venkatesan V. Investigation ofNKX2.5Gene Mutations in Congenital Heart Defects in an Indian Population. Genet Test Mol Biomarkers 2015; 19:579-83. [DOI: 10.1089/gtmb.2015.0112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
| | - Teena Koshy
- Department of Human Genetics, Sri Ramachandra University, Chennai, India
| | - Rajan Sethuratnam
- Institute of Cardio-Vascular Diseases, The Madras Medical Mission, Chennai, India
| | - Solomon Paul
- Department of Human Genetics, Sri Ramachandra University, Chennai, India
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40
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Ellis PS, Burbridge S, Soubes S, Ohyama K, Ben-Haim N, Chen C, Dale K, Shen MM, Constam D, Placzek M. ProNodal acts via FGFR3 to govern duration of Shh expression in the prechordal mesoderm. Development 2015; 142:3821-32. [PMID: 26417042 PMCID: PMC4712875 DOI: 10.1242/dev.119628] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 09/15/2015] [Indexed: 11/20/2022]
Abstract
The secreted glycoprotein sonic hedgehog (Shh) is expressed in the prechordal mesoderm, where it plays a crucial role in induction and patterning of the ventral forebrain. Currently little is known about how Shh is regulated in prechordal tissue. Here we show that in the embryonic chick, Shh is expressed transiently in prechordal mesoderm, and is governed by unprocessed Nodal. Exposure of prechordal mesoderm microcultures to Nodal-conditioned medium, the Nodal inhibitor CerS, or to an ALK4/5/7 inhibitor reveals that Nodal is required to maintain both Shh and Gsc expression, but whereas Gsc is largely maintained through canonical signalling, Nodal signals through a non-canonical route to maintain Shh. Further, Shh expression can be maintained by a recombinant Nodal cleavage mutant, proNodal, but not by purified mature Nodal. A number of lines of evidence suggest that proNodal acts via FGFR3. ProNodal and FGFR3 co-immunoprecipitate and proNodal increases FGFR3 tyrosine phosphorylation. In microcultures, soluble FGFR3 abolishes Shh without affecting Gsc expression. Further, prechordal mesoderm cells in which Fgfr3 expression is reduced by Fgfr3 siRNA fail to bind to proNodal. Finally, targeted electroporation of Fgfr3 siRNA to prechordal mesoderm in vivo results in premature Shh downregulation without affecting Gsc. We report an inverse correlation between proNodal-FGFR3 signalling and pSmad1/5/8, and show that proNodal-FGFR3 signalling antagonises BMP-mediated pSmad1/5/8 signalling, which is poised to downregulate Shh. Our studies suggest that proNodal/FGFR3 signalling governs Shh duration by repressing canonical BMP signalling, and that local BMPs rapidly silence Shh once endogenous Nodal-FGFR3 signalling is downregulated. Highlighted article: In the chick prechordal mesoderm, the Nodal precursor proNodal acts via a non-canonical route to inhibit BMP signalling and thus maintain Shh expression
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Affiliation(s)
- Pamela S Ellis
- The Bateson Centre and Department of Biomedical Science, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Sarah Burbridge
- The Bateson Centre and Department of Biomedical Science, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Sandrine Soubes
- The Bateson Centre and Department of Biomedical Science, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Kyoji Ohyama
- The Bateson Centre and Department of Biomedical Science, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Nadav Ben-Haim
- ISREC, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Epalinges CH 1066, Switzerland
| | - Canhe Chen
- Departments of Medicine and Genetics & Development, Columbia University Medical Center, Herbert Irving Comprehensive Cancer Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA Institute of Molecular and Cell Biology, 61 Biopolis Drive, Proteos, Singapore 138673, Singapore
| | - Kim Dale
- College of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Michael M Shen
- Departments of Medicine and Genetics & Development, Columbia University Medical Center, Herbert Irving Comprehensive Cancer Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Daniel Constam
- ISREC, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Epalinges CH 1066, Switzerland
| | - Marysia Placzek
- The Bateson Centre and Department of Biomedical Science, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
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41
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González-Morales N, Géminard C, Lebreton G, Cerezo D, Coutelis JB, Noselli S. The Atypical Cadherin Dachsous Controls Left-Right Asymmetry in Drosophila. Dev Cell 2015; 33:675-89. [PMID: 26073018 DOI: 10.1016/j.devcel.2015.04.026] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 02/04/2015] [Accepted: 04/28/2015] [Indexed: 12/18/2022]
Abstract
Left-right (LR) asymmetry is essential for organ development and function in metazoans, but how initial LR cue is relayed to tissues still remains unclear. Here, we propose a mechanism by which the Drosophila LR determinant Myosin ID (MyoID) transfers LR information to neighboring cells through the planar cell polarity (PCP) atypical cadherin Dachsous (Ds). Molecular interaction between MyoID and Ds in a specific LR organizer controls dextral cell polarity of adjoining hindgut progenitors and is required for organ looping in adults. Loss of Ds blocks hindgut tissue polarization and looping, indicating that Ds is a crucial factor for both LR cue transmission and asymmetric morphogenesis. We further show that the Ds/Fat and Frizzled PCP pathways are required for the spreading of LR asymmetry throughout the hindgut progenitor tissue. These results identify a direct functional coupling between the LR determinant MyoID and PCP, essential for non-autonomous propagation of early LR asymmetry.
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Affiliation(s)
- Nicanor González-Morales
- Institut de Biologie Valrose, University of Nice Sophia Antipolis, 06108 Nice, France; Institut de Biologie Valrose, CNRS, UMR 7277, 06108 Nice, France; Institut de Biologie Valrose, INSERM, U1091, 06108 Nice, France
| | - Charles Géminard
- Institut de Biologie Valrose, University of Nice Sophia Antipolis, 06108 Nice, France; Institut de Biologie Valrose, CNRS, UMR 7277, 06108 Nice, France; Institut de Biologie Valrose, INSERM, U1091, 06108 Nice, France
| | - Gaëlle Lebreton
- Institut de Biologie Valrose, University of Nice Sophia Antipolis, 06108 Nice, France; Institut de Biologie Valrose, CNRS, UMR 7277, 06108 Nice, France; Institut de Biologie Valrose, INSERM, U1091, 06108 Nice, France
| | - Delphine Cerezo
- Institut de Biologie Valrose, University of Nice Sophia Antipolis, 06108 Nice, France; Institut de Biologie Valrose, CNRS, UMR 7277, 06108 Nice, France; Institut de Biologie Valrose, INSERM, U1091, 06108 Nice, France
| | - Jean-Baptiste Coutelis
- Institut de Biologie Valrose, University of Nice Sophia Antipolis, 06108 Nice, France; Institut de Biologie Valrose, CNRS, UMR 7277, 06108 Nice, France; Institut de Biologie Valrose, INSERM, U1091, 06108 Nice, France
| | - Stéphane Noselli
- Institut de Biologie Valrose, University of Nice Sophia Antipolis, 06108 Nice, France; Institut de Biologie Valrose, CNRS, UMR 7277, 06108 Nice, France; Institut de Biologie Valrose, INSERM, U1091, 06108 Nice, France.
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42
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Rigler SL, Kay DM, Sicko RJ, Fan R, Liu A, Caggana M, Browne ML, Druschel CM, Romitti PA, Brody LC, Mills JL. Novel copy-number variants in a population-based investigation of classic heterotaxy. Genet Med 2015; 17:348-57. [PMID: 25232849 PMCID: PMC5901701 DOI: 10.1038/gim.2014.112] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 07/15/2014] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Heterotaxy is a clinically and genetically heterogeneous disorder. We investigated whether screening cases restricted to a classic phenotype would result in the discovery of novel, potentially causal copy-number variants. METHODS We identified 77 cases of classic heterotaxy from all live births in New York State during 1998-2005. DNA extracted from each infant's newborn dried blood spot was genotyped with a microarray containing 2.5 million single-nucleotide polymorphisms. Copy-number variants were identified with PennCNV and cnvPartition software. Candidates were selected for follow-up if they were absent in unaffected controls, contained 10 or more consecutive probes, and had minimal overlap with variants published in the Database of Genomic Variants. RESULTS We identified 20 rare copy-number variants including a deletion of BMP2, which has been linked to laterality disorders in mice but not previously reported in humans. We also identified a large, terminal deletion of 10q and a microdeletion at 1q23.1 involving the MNDA gene; both are rare variants suspected to be associated with heterotaxy. CONCLUSION Our findings implicate rare copy-number variants in classic heterotaxy and highlight several candidate gene regions for further investigation. We also demonstrate the efficacy of copy-number variant genotyping in blood spots using microarrays.
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Affiliation(s)
- Shannon L. Rigler
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Health and Human Development, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
- Department of Neonatology, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Denise M. Kay
- Division of Genetics, Wadsworth Center, New York State Department of Health, Albany, New York, USA
| | - Robert J. Sicko
- Division of Genetics, Wadsworth Center, New York State Department of Health, Albany, New York, USA
| | - Ruzong Fan
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Health and Human Development, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
| | - Aiyi Liu
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Health and Human Development, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
| | - Michele Caggana
- Division of Genetics, Wadsworth Center, New York State Department of Health, Albany, New York, USA
| | - Marilyn L. Browne
- Congenital Malformations Registry, New York State Department of Health, Albany, New York, USA
- Department of Epidemiology and Biostatistics, University at Albany School of Public Health, Rensselaer, New York, USA
| | - Charlotte M. Druschel
- Congenital Malformations Registry, New York State Department of Health, Albany, New York, USA
- Department of Epidemiology and Biostatistics, University at Albany School of Public Health, Rensselaer, New York, USA
| | - Paul A. Romitti
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, Iowa, USA
| | - Lawrence C. Brody
- Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
| | - James L. Mills
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Health and Human Development, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA
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Worley KE, Shieh D, Wan LQ. Inhibition of cell–cell adhesion impairs directional epithelial migration on micropatterned surfaces. Integr Biol (Camb) 2015; 7:580-90. [DOI: 10.1039/c5ib00073d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Kathryn E. Worley
- Department of Biomedical Engineering, Laboratory for Tissue Engineering and Morphogenesis, 2147 Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA. Web: http://www.rpi.edu/∼wanq; Fax: +1-518-276-3035; Tel: +1-518-276-2505
| | - David Shieh
- Department of Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - Leo Q. Wan
- Department of Biomedical Engineering, Laboratory for Tissue Engineering and Morphogenesis, 2147 Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA. Web: http://www.rpi.edu/∼wanq; Fax: +1-518-276-3035; Tel: +1-518-276-2505
- Center for Biotechnology & Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
- Center for Modeling, Simulation and Imaging in Medicine, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
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Gaarenstroom T, Hill CS. TGF-β signaling to chromatin: how Smads regulate transcription during self-renewal and differentiation. Semin Cell Dev Biol 2014; 32:107-18. [PMID: 24503509 DOI: 10.1016/j.semcdb.2014.01.009] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 01/29/2014] [Indexed: 12/20/2022]
Abstract
Ligands of the TGF-β superfamily (including the TGF-βs, Nodal and BMPs) play instructive roles during embryonic development. This is achieved by regulation of genes important for both maintaining pluripotency and germ layer specification and differentiation. Here we review how the TGF-β superfamily ligands signal to the chromatin to regulate transcription during development. The effectors of the pathway, the Smad transcription factors, are regulated in a combinatorial and spatiotemporal manner. This occurs via post-translational modifications affecting stability, localization and activity, as well as through interactions with other transcription factors and chromatin modifying enzymes, which occur on DNA. Expression profiling and Chromatin Immunoprecipitation have defined Smad target genes and binding sites on a genome-wide scale, which vary between cell types and differentiation stages. This has led to the insight that Smad-mediated transcriptional responses are influenced by the presence of master transcription factors, such as OCT4, SOX2 and NANOG in embryonic stem cells, interaction with other signal-induced factors, as well as by the general chromatin remodeling machinery. Interplay with transcriptional repressors and the polycomb group proteins also regulates the balance between expression of self-renewal and mesendoderm-specific genes in embryonic stem cells and during early development.
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Affiliation(s)
- Tessa Gaarenstroom
- Laboratory of Developmental Signalling, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, United Kingdom
| | - Caroline S Hill
- Laboratory of Developmental Signalling, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, United Kingdom.
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Qi H, Huang G, Han YL, Lin W, Li X, Wang S, Lu TJ, Xu F. In vitro spatially organizing the differentiation in individual multicellular stem cell aggregates. Crit Rev Biotechnol 2014; 36:20-31. [PMID: 25025275 DOI: 10.3109/07388551.2014.922917] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
With significant potential as a robust source to produce specific somatic cells for regenerative medicine, stem cells have attracted increasing attention from both academia and government. In vivo, stem cell differentiation is a process under complicated regulations to precisely build tissue with unique spatial structures. Since multicellular spheroidal aggregates of stem cells, commonly called as embryoid bodies (EBs), are considered to be capable of recapitulating the events in early stage of embryonic development, a variety of methods have been developed to form EBs in vitro for studying differentiation of embryonic stem cells. The regulation of stem cell differentiation is crucial in directing stem cells to build tissue with the correct spatial architecture for specific functions. However, stem cells within the three-dimensional multicellular aggregates undergo differentiation in a less unpredictable and spatially controlled manner in vitro than in vivo. Recently, various microengineering technologies have been developed to manipulate stem cells in vitro in a spatially controlled manner. Herein, we take the spotlight on these technologies and researches that bring us the new potential for manipulation of stem cells for specific purposes.
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Affiliation(s)
- Hao Qi
- a MOE Key laboratory of Biomedical Information Engineering , School of Life Science and Technology, Xi'an Jiaotong University , Xi'an , People's Republic of China .,b Bioinspired Engineering and Biomechanics Center, Xi'an Jiaotong University , Xi'an , People's Republic of China .,c Department of Medical Genome Sciences , Graduate School of Frontier Sciences, University of Tokyo , Kashiwa , Chiba , Japan
| | - Guoyou Huang
- a MOE Key laboratory of Biomedical Information Engineering , School of Life Science and Technology, Xi'an Jiaotong University , Xi'an , People's Republic of China .,b Bioinspired Engineering and Biomechanics Center, Xi'an Jiaotong University , Xi'an , People's Republic of China
| | - Yu Long Han
- a MOE Key laboratory of Biomedical Information Engineering , School of Life Science and Technology, Xi'an Jiaotong University , Xi'an , People's Republic of China .,b Bioinspired Engineering and Biomechanics Center, Xi'an Jiaotong University , Xi'an , People's Republic of China
| | - Wang Lin
- a MOE Key laboratory of Biomedical Information Engineering , School of Life Science and Technology, Xi'an Jiaotong University , Xi'an , People's Republic of China .,b Bioinspired Engineering and Biomechanics Center, Xi'an Jiaotong University , Xi'an , People's Republic of China
| | - Xiujun Li
- d Department of Chemistry , University of Texas at EI Paso , EI Paso , TX , USA , and
| | - Shuqi Wang
- e Brigham Women's Hospital, Harvard Medical School , Boston , MA , USA
| | - Tian Jian Lu
- b Bioinspired Engineering and Biomechanics Center, Xi'an Jiaotong University , Xi'an , People's Republic of China
| | - Feng Xu
- a MOE Key laboratory of Biomedical Information Engineering , School of Life Science and Technology, Xi'an Jiaotong University , Xi'an , People's Republic of China .,b Bioinspired Engineering and Biomechanics Center, Xi'an Jiaotong University , Xi'an , People's Republic of China
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Noël ES, Verhoeven M, Lagendijk AK, Tessadori F, Smith K, Choorapoikayil S, den Hertog J, Bakkers J. A Nodal-independent and tissue-intrinsic mechanism controls heart-looping chirality. Nat Commun 2014; 4:2754. [PMID: 24212328 DOI: 10.1038/ncomms3754] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 10/10/2013] [Indexed: 12/21/2022] Open
Abstract
Breaking left-right symmetry in bilateria is a major event during embryo development that is required for asymmetric organ position, directional organ looping and lateralized organ function in the adult. Asymmetric expression of Nodal-related genes is hypothesized to be the driving force behind regulation of organ laterality. Here we identify a Nodal-independent mechanism that drives asymmetric heart looping in zebrafish embryos. In a unique mutant defective for the Nodal-related southpaw gene, preferential dextral looping in the heart is maintained, whereas gut and brain asymmetries are randomized. As genetic and pharmacological inhibition of Nodal signalling does not abolish heart asymmetry, a yet undiscovered mechanism controls heart chirality. This mechanism is tissue intrinsic, as explanted hearts maintain ex vivo retain chiral looping behaviour and require actin polymerization and myosin II activity. We find that Nodal signalling regulates actin gene expression, supporting a model in which Nodal signalling amplifies this tissue-intrinsic mechanism of heart looping.
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Affiliation(s)
- Emily S Noël
- Hubrecht Institute-KNAW and University Medical Center Utrecht, 3584CT Utrecht, The Netherlands
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Smad1 transcription factor integrates BMP2 and Wnt3a signals in migrating cardiac progenitor cells. Proc Natl Acad Sci U S A 2014; 111:7337-42. [PMID: 24808138 DOI: 10.1073/pnas.1321764111] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In vertebrate embryos, cardiac progenitor cells (CPCs) undergo long-range migration after emerging from the primitive streak during gastrulation. Together with other mesoderm progenitors, they migrate laterally and then toward the ventral midline, where they form the heart. Signals controlling the migration of different progenitor cell populations during gastrulation are poorly understood. Several pathways are involved in the epithelial-to-mesenchymal transition and ingression of mesoderm cells through the primitive streak, including fibroblast growth factors and wingless-type family members (Wnt). Here we focus on early CPC migration and use live video microscopy in chicken embryos to demonstrate a role for bone morphogenetic protein (BMP)/SMA and MAD related (Smad) signaling. We identify an interaction of BMP and Wnt/glycogen synthase kinase 3 beta (GSK3β) pathways via the differential phosphorylation of Smad1. Increased BMP2 activity altered migration trajectories of prospective cardiac cells and resulted in their lateral displacement and ectopic differentiation, as they failed to reach the ventral midline. Constitutively active BMP receptors or constitutively active Smad1 mimicked this phenotype, suggesting a cell autonomous response. Expression of GSK3β, which promotes the turnover of active Smad1, rescued the BMP-induced migration phenotype. Conversely, expression of GSK3β-resistant Smad1 resulted in aberrant CPC migration trajectories. De-repression of GSK3β by dominant negative Wnt3a restored normal migration patterns in the presence of high BMP activity. The data indicate the convergence of BMP and Wnt pathways on Smad1 during the early migration of prospective cardiac cells. Overall, we reveal molecular mechanisms that contribute to the emerging paradigm of signaling pathway integration in embryo development.
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Pi-Roig A, Martin-Blanco E, Minguillon C. Distinct tissue-specific requirements for the zebrafish tbx5 genes during heart, retina and pectoral fin development. Open Biol 2014; 4:140014. [PMID: 24759614 PMCID: PMC4043114 DOI: 10.1098/rsob.140014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The transcription factor Tbx5 is expressed in the developing heart, eyes and anterior appendages. Mutations in human TBX5 cause Holt-Oram syndrome, a condition characterized by heart and upper limb malformations. Tbx5-knockout mouse embryos have severely impaired forelimb and heart morphogenesis from the earliest stages of their development. However, zebrafish embryos with compromised tbx5 function show a complete absence of pectoral fins, while heart development is disturbed at significantly later developmental stages and eye development remains to be thoroughly analysed. We identified a novel tbx5 gene in zebrafish--tbx5b--that is co-expressed with its paralogue, tbx5a, in the developing eye and heart and hypothesized that functional redundancy could be occurring in these organs in embryos with impaired tbx5a function. We have now investigated the consequences of tbx5a and/or tbx5b downregulation in zebrafish to reveal that tbx5 genes have essential roles in the establishment of cardiac laterality, dorsoventral retina axis organization and pectoral fin development. Our data show that distinct relationships between tbx5 paralogues are required in a tissue-specific manner to ensure the proper morphogenesis of the three organs in which they are expressed. Furthermore, we uncover a novel role for tbx5 genes in the establishment of correct heart asymmetry in zebrafish embryos.
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Affiliation(s)
- Aina Pi-Roig
- CSIC-Institut de Biologia Molecular de Barcelona, Department of Developmental Biology, Parc Científic de Barcelona, C/Baldiri Reixac, 10, Barcelona 08028, Spain
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Abstract
The satellite symposium on 'Making and breaking the left-right axis: implications of laterality in development and disease' was held in June 2013 in conjunction with the 17th International Society for Developmental Biology meeting in Cancún, Mexico. As we summarize here, leaders in the field gathered at the symposium to discuss recent advances in understanding how left-right asymmetry is generated and utilized across the animal kingdom.
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Affiliation(s)
- Rebecca D Burdine
- Department of Molecular Biology, Princeton University, Washington Road, Princeton, NJ 08544, USA
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50
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Wilkinson RN, Jopling C, van Eeden FJM. Zebrafish as a model of cardiac disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2014; 124:65-91. [PMID: 24751427 DOI: 10.1016/b978-0-12-386930-2.00004-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The zebrafish has been rapidly adopted as a model for cardiac development and disease. The transparency of the embryo, its limited requirement for active oxygen delivery, and ease of use in genetic manipulations and chemical exposure have made it a powerful alternative to rodents. Novel technologies like TALEN/CRISPR-mediated genome engineering and advanced imaging methods will only accelerate its use. Here, we give an overview of heart development and function in the fish and highlight a number of areas where it is most actively contributing to the understanding of cardiac development and disease. We also review the current state of research on a feature that we only could wish to be conserved between fish and human; cardiac regeneration.
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Affiliation(s)
- Robert N Wilkinson
- Department of Cardiovascular Science, Medical School, University of Sheffield, Sheffield, United Kingdom
| | - Chris Jopling
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Labex Ion Channel Science and Therapeutics, Montpellier, France; INSERM, U661, Montpellier, France; Universités de Montpellier 1&2, UMR-5203, Montpellier, France
| | - Fredericus J M van Eeden
- MRC Centre for Biomedical Genetics, Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
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