1
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Labudina AA, Meier M, Gimenez G, Tatarakis D, Ketharnathan S, Mackie B, Schilling TF, Antony J, Horsfield JA. Cohesin composition and dosage independently affect early development in zebrafish. Development 2024; 151:dev202593. [PMID: 38975838 DOI: 10.1242/dev.202593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 06/27/2024] [Indexed: 07/09/2024]
Abstract
Cohesin, a chromatin-associated protein complex with four core subunits (Smc1a, Smc3, Rad21 and either Stag1 or 2), has a central role in cell proliferation and gene expression in metazoans. Human developmental disorders termed 'cohesinopathies' are characterized by germline variants of cohesin or its regulators that do not entirely eliminate cohesin function. However, it is not clear whether mutations in individual cohesin subunits have independent developmental consequences. Here, we show that zebrafish rad21 or stag2b mutants independently influence embryonic tailbud development. Both mutants have altered mesoderm induction, but only homozygous or heterozygous rad21 mutation affects cell cycle gene expression. stag2b mutants have narrower notochords and reduced Wnt signaling in neuromesodermal progenitors as revealed by single-cell RNA sequencing. Stimulation of Wnt signaling rescues transcription and morphology in stag2b, but not rad21, mutants. Our results suggest that mutations altering the quantity versus composition of cohesin have independent developmental consequences, with implications for the understanding and management of cohesinopathies.
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Affiliation(s)
- Anastasia A Labudina
- Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 913, Dunedin 9016, New Zealand
| | - Michael Meier
- Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 913, Dunedin 9016, New Zealand
| | - Gregory Gimenez
- Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 913, Dunedin 9016, New Zealand
| | - David Tatarakis
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697-2300, USA
| | - Sarada Ketharnathan
- Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 913, Dunedin 9016, New Zealand
| | - Bridget Mackie
- Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 913, Dunedin 9016, New Zealand
| | - Thomas F Schilling
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697-2300, USA
| | - Jisha Antony
- Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 913, Dunedin 9016, New Zealand
| | - Julia A Horsfield
- Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 913, Dunedin 9016, New Zealand
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2
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Qian S, Zhang C, Tang Y, Dai M, He Z, Ma H, Wang L, Yang Q, Liu Y, Xu W, Zhang Z, Tang QQ. A single-cell sequence analysis of mouse subcutaneous white adipose tissue reveals dynamic changes during weaning. Commun Biol 2024; 7:787. [PMID: 38951550 PMCID: PMC11217364 DOI: 10.1038/s42003-024-06448-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 06/12/2024] [Indexed: 07/03/2024] Open
Abstract
Adipose tissue development begins in the fetal period, and continues to expand after birth. Dysregulation of adipose tissue during weaning may predispose individuals to lifelong metabolic disorders. However, the developmental remodeling of adipose tissue during weaning remains largely unexplored. Here we comprehensively compare the changes in mouse subcutaneous white adipose tissue from 7 days after birth to 7 days after weaning using single-cell RNA sequencing along with other molecular and histologic assays. We characterize the developmental trajectory of preadipocytes and indicate the commitment of preadipocytes with beige potential during weaning. Meanwhile, we find immune cells unique to weaning period, whose expression of extracellular matrix proteins implies potential regulation on preadipocyte. Finally, the strongest cell-cell interaction during weaning determined by the TGFβ ligand-receptor pairs is between preadipocytes and endotheliocytes. Our results provide a detailed and unbiased cellular landscape and offer insights into the potential regulation of adipose tissue remodeling during weaning.
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Affiliation(s)
- Shuwen Qian
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Chenyang Zhang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Yan Tang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Mengyuan Dai
- Department of Immunology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Zhihui He
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Hong Ma
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Linyuan Wang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Qiqi Yang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Yang Liu
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Wei Xu
- Department of Immunology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Zhao Zhang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| | - Qi-Qun Tang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
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3
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Mensah IK, Gowher H. Signaling Pathways Governing Cardiomyocyte Differentiation. Genes (Basel) 2024; 15:798. [PMID: 38927734 PMCID: PMC11202427 DOI: 10.3390/genes15060798] [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: 05/24/2024] [Revised: 06/13/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
Cardiomyocytes are the largest cell type that make up the heart and confer beating activity to the heart. The proper differentiation of cardiomyocytes relies on the efficient transmission and perception of differentiation cues from several signaling pathways that influence cardiomyocyte-specific gene expression programs. Signaling pathways also mediate intercellular communications to promote proper cardiomyocyte differentiation. We have reviewed the major signaling pathways involved in cardiomyocyte differentiation, including the BMP, Notch, sonic hedgehog, Hippo, and Wnt signaling pathways. Additionally, we highlight the differences between different cardiomyocyte cell lines and the use of these signaling pathways in the differentiation of cardiomyocytes from stem cells. Finally, we conclude by discussing open questions and current gaps in knowledge about the in vitro differentiation of cardiomyocytes and propose new avenues of research to fill those gaps.
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Affiliation(s)
| | - Humaira Gowher
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
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4
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Paulissen E, Martin BL. A Chemically Inducible Muscle Ablation System for the Zebrafish. Zebrafish 2024; 21:243-249. [PMID: 38436568 PMCID: PMC11301710 DOI: 10.1089/zeb.2023.0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
An effective method for tissue-specific ablation in zebrafish is the nitroreductase (NTR)/metronidazole (MTZ) system. Expressing bacterial NTR in the presence of nitroimidazole compounds causes apoptotic cell death, which can be useful for understanding many biological processes. However, this requires tissue-specific expression of the NTR enzyme, and many tissues have yet to be targeted with transgenic lines that express NTR. We generated a transgenic zebrafish line expressing NTR in differentiated skeletal muscle. Treatment of embryos with MTZ caused muscle specific cell ablation. We demonstrate this line can be used to monitor muscle regeneration in whole embryos and in transplanted transgenic cells.
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Affiliation(s)
- Eric Paulissen
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
| | - Benjamin L. Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
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5
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Martins-Costa C, Wilson V, Binagui-Casas A. Neuromesodermal specification during head-to-tail body axis formation. Curr Top Dev Biol 2024; 159:232-271. [PMID: 38729677 DOI: 10.1016/bs.ctdb.2024.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
The anterior-to-posterior (head-to-tail) body axis is extraordinarily diverse among vertebrates but conserved within species. Body axis development requires a population of axial progenitors that resides at the posterior of the embryo to sustain elongation and is then eliminated once axis extension is complete. These progenitors occupy distinct domains in the posterior (tail-end) of the embryo and contribute to various lineages along the body axis. The subset of axial progenitors with neuromesodermal competency will generate both the neural tube (the precursor of the spinal cord), and the trunk and tail somites (producing the musculoskeleton) during embryo development. These axial progenitors are called Neuromesodermal Competent cells (NMCs) and Neuromesodermal Progenitors (NMPs). NMCs/NMPs have recently attracted interest beyond the field of developmental biology due to their clinical potential. In the mouse, the maintenance of neuromesodermal competency relies on a fine balance between a trio of known signals: Wnt/β-catenin, FGF signalling activity and suppression of retinoic acid signalling. These signals regulate the relative expression levels of the mesodermal transcription factor Brachyury and the neural transcription factor Sox2, permitting the maintenance of progenitor identity when co-expressed, and either mesoderm or neural lineage commitment when the balance is tilted towards either Brachyury or Sox2, respectively. Despite important advances in understanding key genes and cellular behaviours involved in these fate decisions, how the balance between mesodermal and neural fates is achieved remains largely unknown. In this chapter, we provide an overview of signalling and gene regulatory networks in NMCs/NMPs. We discuss mutant phenotypes associated with axial defects, hinting at the potential significant role of lesser studied proteins in the maintenance and differentiation of the progenitors that fuel axial elongation.
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Affiliation(s)
- C Martins-Costa
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna BioCenter, Vienna, Austria
| | - V Wilson
- Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.
| | - A Binagui-Casas
- Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.
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6
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Mancini FE, Humphreys PEA, Woods S, Bates N, Cuvertino S, O'Flaherty J, Biant L, Domingos MAN, Kimber SJ. Effect of a retinoic acid analogue on BMP-driven pluripotent stem cell chondrogenesis. Sci Rep 2024; 14:2696. [PMID: 38302538 PMCID: PMC10834951 DOI: 10.1038/s41598-024-52362-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 01/17/2024] [Indexed: 02/03/2024] Open
Abstract
Osteoarthritis is the most common degenerative joint condition, leading to articular cartilage (AC) degradation, chronic pain and immobility. The lack of appropriate therapies that provide tissue restoration combined with the limited lifespan of joint-replacement implants indicate the need for alternative AC regeneration strategies. Differentiation of human pluripotent stem cells (hPSCs) into AC progenitors may provide a long-term regenerative solution but is still limited due to the continued reliance upon growth factors to recapitulate developmental signalling processes. Recently, TTNPB, a small molecule activator of retinoic acid receptors (RARs), has been shown to be sufficient to guide mesodermal specification and early chondrogenesis of hPSCs. Here, we modified our previous differentiation protocol, by supplementing cells with TTNPB and administering BMP2 at specific times to enhance early development (referred to as the RAPID-E protocol). Transcriptomic analyses indicated that activation of RAR signalling significantly upregulated genes related to limb and embryonic skeletal development in the early stages of the protocol and upregulated genes related to AC development in later stages. Chondroprogenitors obtained from RAPID-E could generate cartilaginous pellets that expressed AC-related matrix proteins such as Lubricin, Aggrecan, and Collagen II, but additionally expressed Collagen X, indicative of hypertrophy. This protocol could lay the foundations for cell therapy strategies for osteoarthritis and improve the understanding of AC development in humans.
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Affiliation(s)
- Fabrizio E Mancini
- Division of Cell Matrix and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Oxford Rd, Manchester, M13 9PT, UK
- Department of Solids and Structures, School of Engineering, Faculty of Science and Engineering, University of Manchester, Manchester, M13 9PL, UK
| | - Paul E A Humphreys
- Division of Cell Matrix and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Oxford Rd, Manchester, M13 9PT, UK
| | - Steven Woods
- Division of Cell Matrix and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Oxford Rd, Manchester, M13 9PT, UK
| | - Nicola Bates
- Division of Cell Matrix and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Oxford Rd, Manchester, M13 9PT, UK
| | - Sara Cuvertino
- Division of Evolution, Infection and Genomics, Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Rd, Manchester, M13 9PT, UK
| | - Julieta O'Flaherty
- Division of Cell Matrix and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Oxford Rd, Manchester, M13 9PT, UK
| | - Leela Biant
- Division of Cell Matrix and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Oxford Rd, Manchester, M13 9PT, UK
| | - Marco A N Domingos
- Department of Solids and Structures, School of Engineering, Faculty of Science and Engineering, University of Manchester, Manchester, M13 9PL, UK
| | - Susan J Kimber
- Division of Cell Matrix and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Oxford Rd, Manchester, M13 9PT, UK.
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7
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Heikes KL, Goldstein B. Expression patterns of FGF and BMP pathway genes in the tardigrade Hypsibius exemplaris. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.29.577774. [PMID: 38352320 PMCID: PMC10862696 DOI: 10.1101/2024.01.29.577774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
A small number of conserved signaling pathways regulate development of most animals, yet we do not know where these pathways are deployed in most embryos. This includes tardigrades, a phylum with a unique body shape. We examined expression patterns of components of the BMP and FGF signaling pathways during embryonic segmentation and mesoderm development of the tardigrade Hypsibius exemplaris. Among the patterns examined, we found that an FGF ligand gene is expressed in ectodermal segment posteriors and an FGF receptor gene is expressed in underlying endomesodermal pouches, suggesting possible FGF signaling between these developing germ layers. We found that a BMP ligand gene is expressed in lateral ectoderm and dorsolateral bands along segment posteriors, while the BMP antagonist Sog gene is expressed in lateral ectoderm and also in a subset of endomesodermal cells, suggesting a possible role of BMP signaling in dorsal-ventral patterning of lateral ectoderm. In combination with known roles of these pathways during development of common model systems, we developed hypotheses for how the BMP and FGF pathways might regulate embryo segmentation and mesoderm formation of the tardigrade H. exemplaris. These results identify the expression patterns of genes from two conserved signaling pathways for the first time in the tardigrade phylum.
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Affiliation(s)
- Kira L. Heikes
- Biology Department, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Bob Goldstein
- Biology Department, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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8
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Chen F, Köhler M, Cucun G, Takamiya M, Kizil C, Cosacak MI, Rastegar S. sox1a:eGFP transgenic line and single-cell transcriptomics reveal the origin of zebrafish intraspinal serotonergic neurons. iScience 2023; 26:107342. [PMID: 37529101 PMCID: PMC10387610 DOI: 10.1016/j.isci.2023.107342] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/03/2023] [Accepted: 07/06/2023] [Indexed: 08/03/2023] Open
Abstract
Sox transcription factors are crucial for vertebrate nervous system development. In zebrafish embryo, sox1 genes are expressed in neural progenitor cells and neurons of ventral spinal cord. Our recent study revealed that the loss of sox1a and sox1b function results in a significant decline of V2 subtype neurons (V2s). Using single-cell RNA sequencing, we analyzed the transcriptome of sox1a lineage progenitors and neurons in the zebrafish spinal cord at four time points during embryonic development, employing the Tg(sox1a:eGFP) line. In addition to previously characterized sox1a-expressing neurons, we discovered the expression of sox1a in late-developing intraspinal serotonergic neurons (ISNs). Developmental trajectory analysis suggests that ISNs arise from lateral floor plate (LFP) progenitor cells. Pharmacological inhibition of the Notch signaling pathway revealed its role in negatively regulating LFP progenitor cell differentiation into ISNs. Our findings highlight the zebrafish LFP as a progenitor domain for ISNs, alongside known Kolmer-Agduhr (KA) and V3 interneurons.
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Affiliation(s)
- Fushun Chen
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Campus North, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Melina Köhler
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Campus North, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Gokhan Cucun
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Campus North, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Masanari Takamiya
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Campus North, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Caghan Kizil
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Helmholtz Association, Tatzberg 41, 01307 Dresden, Germany
- Department of Neurology and the Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Columbia University Irving Medical Center, 630 W 168th Street, New York, NY 10032, USA
| | - Mehmet Ilyas Cosacak
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Helmholtz Association, Tatzberg 41, 01307 Dresden, Germany
| | - Sepand Rastegar
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Campus North, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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9
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Gattiglio M, Protzek M, Schröter C. Population-level antagonism between FGF and BMP signaling steers mesoderm differentiation in embryonic stem cells. Biol Open 2023; 12:bio059941. [PMID: 37530863 PMCID: PMC10445724 DOI: 10.1242/bio.059941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 07/20/2023] [Indexed: 08/03/2023] Open
Abstract
The mesodermal precursor populations for different internal organ systems are specified during gastrulation by the combined activity of extracellular signaling systems such as BMP, Wnt, Nodal and FGF. The BMP, Wnt and Nodal signaling requirements for the differentiation of specific mesoderm subtypes in mammals have been mapped in detail, but how FGF shapes mesodermal cell type diversity is not precisely known. It is also not clear how FGF signaling integrates with the activity of other signaling systems involved in mesoderm differentiation. Here, we address these questions by analyzing the effects of targeted signaling manipulations in differentiating stem cell populations at single-cell resolution. We identify opposing functions of BMP and FGF, and map FGF-dependent and -independent mesodermal lineages. Stimulation with exogenous FGF boosts the expression of endogenous Fgf genes while repressing Bmp ligand genes. This positive autoregulation of FGF signaling, coupled with the repression of BMP signaling, may contribute to the specification of reproducible and coherent cohorts of cells with the same identity via a community effect, both in the embryo and in synthetic embryo-like systems.
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Affiliation(s)
- Marina Gattiglio
- Max Planck Institute of Molecular Physiology, Department of Systemic Cell Biology, 44227Dortmund, Germany
| | - Michelle Protzek
- Max Planck Institute of Molecular Physiology, Department of Systemic Cell Biology, 44227Dortmund, Germany
| | - Christian Schröter
- Max Planck Institute of Molecular Physiology, Department of Systemic Cell Biology, 44227Dortmund, Germany
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10
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Rothschild SC, Row RH, Martin BL, Clements WK. Sclerotome is compartmentalized by parallel Shh and Bmp signaling downstream of CaMKII. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.21.550086. [PMID: 37503202 PMCID: PMC10370206 DOI: 10.1101/2023.07.21.550086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
The sclerotome in vertebrates comprises an embryonic population of cellular progenitors that give rise to diverse adult tissues including the axial skeleton, ribs, intervertebral discs, connective tissue, and vascular smooth muscle. In the thorax, this cell population arises in the ventromedial region of each of the segmented tissue blocks known as somites. How and when sclerotome adult tissue fates are specified and how the gene signatures that predate those fates are regulated has not been well studied. We have identified a previously unknown role for Ca 2+ /calmodulin-dependent protein kinase II (CaMKII) in regulating sclerotome patterning in zebrafish. Mechanistically, CaMKII regulates the activity of parallel signaling inputs that pattern sclerotome gene expression. In one downstream arm, CaMKII regulates distribution of the established sclerotome-inductive morphogen sonic hedgehog (Shh), and thus Shh-dependent sclerotome genes. In the second downstream arm, we show a previously unappreciated inductive requirement for Bmp signaling, where CaMKII activates expression of bmp4 and consequently Bmp activity. Bmp activates expression of a second subset of stereotypical sclerotome genes, while simultaneously repressing Shh-dependent markers. Our work demonstrates that CaMKII promotes parallel Bmp and Shh signaling as a mechanism to first promote global sclerotome specification, and that these pathways subsequently regionally activate and refine discrete compartmental genetic programs. Our work establishes how the earliest unique gene signatures that likely drive distinct cell behaviors and adult fates arise within the sclerotome.
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11
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Nakajima H, Ishikawa H, Yamamoto T, Chiba A, Fukui H, Sako K, Fukumoto M, Mattonet K, Kwon HB, Hui SP, Dobreva GD, Kikuchi K, Helker CSM, Stainier DYR, Mochizuki N. Endoderm-derived islet1-expressing cells differentiate into endothelial cells to function as the vascular HSPC niche in zebrafish. Dev Cell 2023; 58:224-238.e7. [PMID: 36693371 DOI: 10.1016/j.devcel.2022.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 10/26/2022] [Accepted: 12/29/2022] [Indexed: 01/25/2023]
Abstract
Endothelial cells (ECs) line blood vessels and serve as a niche for hematopoietic stem and progenitor cells (HSPCs). Recent data point to tissue-specific EC specialization as well as heterogeneity; however, it remains unclear how ECs acquire these properties. Here, by combining live-imaging-based lineage-tracing and single-cell transcriptomics in zebrafish embryos, we identify an unexpected origin for part of the vascular HSPC niche. We find that islet1 (isl1)-expressing cells are the progenitors of the venous ECs that constitute the majority of the HSPC niche. These isl1-expressing cells surprisingly originate from the endoderm and differentiate into ECs in a process dependent on Bmp-Smad signaling and subsequently requiring npas4l (cloche) function. Single-cell RNA sequencing analyses show that isl1-derived ECs express a set of genes that reflect their distinct origin. This study demonstrates that endothelial specialization in the HSPC niche is determined at least in part by the origin of the ECs.
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Affiliation(s)
- Hiroyuki Nakajima
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan.
| | - Hiroyuki Ishikawa
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Takuya Yamamoto
- Department of Life Science Frontiers, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8507, Japan; Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan; AMED-CREST, AMED, Tokyo 100-0004, Japan; Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto 606-8507, Japan
| | - Ayano Chiba
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Hajime Fukui
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Keisuke Sako
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Moe Fukumoto
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Kenny Mattonet
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany
| | - Hyouk-Bum Kwon
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany; Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Subhra P Hui
- S. N. Pradhan Centre for Neurosciences, University of Calcutta, Kolkata 700019, India
| | - Gergana D Dobreva
- Department of Cardiovascular Genomics and Epigenomics, European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim 68167, Germany
| | - Kazu Kikuchi
- Department of Cardiac Regeneration Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Christian S M Helker
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany; Philipps-University Marburg, Faculty of Biology, Cell Signaling and Dynamics, Marburg 35043, Germany
| | - Didier Y R Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, Bad Nauheim 61231, Germany.
| | - Naoki Mochizuki
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan.
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12
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Paulissen E, Martin BL. Myogenic regulatory factors Myod and Myf5 are required for dorsal aorta formation and angiogenic sprouting. Dev Biol 2022; 490:134-143. [PMID: 35917935 DOI: 10.1016/j.ydbio.2022.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 06/14/2022] [Accepted: 07/14/2022] [Indexed: 11/22/2022]
Abstract
The vertebrate embryonic midline vasculature forms in close proximity to the developing skeletal muscle, which originates in the somites. Angioblasts migrate from bilateral positions along the ventral edge of the somites until they meet at the midline, where they sort and differentiate into the dorsal aorta and the cardinal vein. This migration occurs at the same time that myoblasts in the somites are beginning to differentiate into skeletal muscle, a process which requires the activity of the basic helix loop helix (bHLH) transcription factors Myod and Myf5. Here we examined vasculature formation in myod and myf5 mutant zebrafish. In the absence of skeletal myogenesis, angioblasts migrate normally to the midline but form only the cardinal vein and not the dorsal aorta. The phenotype is due to the failure to activate vascular endothelial growth factor ligand vegfaa expression in the somites, which in turn is required in the adjacent angioblasts for dorsal aorta specification. Myod and Myf5 cooperate with Hedgehog signaling to activate and later maintain vegfaa expression in the medial somites, which is required for angiogenic sprouting from the dorsal aorta. Our work reveals that the early embryonic skeletal musculature in teleosts evolved to organize the midline vasculature during development.
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Affiliation(s)
- Eric Paulissen
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, 11794-5215, United States
| | - Benjamin L Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, 11794-5215, United States.
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13
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Gupta S, Kawaguchi R, Heinrichs E, Gallardo S, Castellanos S, Mandric I, Novitch BG, Butler SJ. In vitro atlas of dorsal spinal interneurons reveals Wnt signaling as a critical regulator of progenitor expansion. Cell Rep 2022; 40:111119. [PMID: 35858555 PMCID: PMC9414195 DOI: 10.1016/j.celrep.2022.111119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 04/12/2022] [Accepted: 06/28/2022] [Indexed: 11/03/2022] Open
Abstract
Restoring sensation after injury or disease requires a reproducible method for generating large quantities of bona fide somatosensory interneurons. Toward this goal, we assess the mechanisms by which dorsal spinal interneurons (dIs; dI1-dI6) can be derived from mouse embryonic stem cells (mESCs). Using two developmentally relevant growth factors, retinoic acid (RA) and bone morphogenetic protein (BMP) 4, we recapitulate the complete in vivo program of dI differentiation through a neuromesodermal intermediate. Transcriptional profiling reveals that mESC-derived dIs strikingly resemble endogenous dIs, with the correct molecular and functional signatures. We further demonstrate that RA specifies dI4-dI6 fates through a default multipotential state, while the addition of BMP4 induces dI1-dI3 fates and activates Wnt signaling to enhance progenitor proliferation. Constitutively activating Wnt signaling permits the dramatic expansion of neural progenitor cultures. These cultures retain the capacity to differentiate into diverse populations of dIs, thereby providing a method of increasing neuronal yield.
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Affiliation(s)
- Sandeep Gupta
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA.
| | - Riki Kawaguchi
- Department of Psychiatry, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Eric Heinrichs
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Genetics and Genomics Graduate Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Salena Gallardo
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Interdepartmental Graduate Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Stephanie Castellanos
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; CIRM Bridges to Research Program, California State University, Northridge, Los Angeles, CA, USA
| | - Igor Mandric
- Department of Computer Science, Samueli School of Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Bennett G Novitch
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Intellectual & Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Samantha J Butler
- Department of Neurobiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Intellectual & Developmental Disabilities Research Center, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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14
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Martin BL, Steventon B. A fishy tail: Insights into the cell and molecular biology of neuromesodermal cells from zebrafish embryos. Dev Biol 2022; 487:67-73. [PMID: 35525020 DOI: 10.1016/j.ydbio.2022.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/29/2022] [Accepted: 04/26/2022] [Indexed: 11/03/2022]
Abstract
Vertebrate embryos establish their primary body axis in a conserved progressive fashion from the anterior to the posterior. During this process, a posteriorly localized neuromesodermal cell population called neuromesodermal progenitors (NMps) plays a critical role in contributing new cells to the spinal cord and mesoderm as the embryo elongates. Defects in neuromesodermal population development can cause severe disruptions to the formation of the body posterior to the head. Given their importance during development and their potential, some of which has already been realized, for revealing new methods of in vitro tissue generation, there is great interest in better understanding NMp biology. The zebrafish model system has been instrumental in advancing our understanding of the molecular and cellular attributes of the NM cell population and its derivatives. In this review, we focus on our current understanding of the zebrafish NM population and its contribution to body axis formation, with particular emphasis on the lineage potency, morphogenesis, and niche factors that promote or inhibit differentiation.
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Affiliation(s)
- Benjamin L Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, 11794-5215, USA.
| | - Benjamin Steventon
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom.
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15
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Cooper F, Tsakiridis A. Towards clinical applications of in vitro-derived axial progenitors. Dev Biol 2022; 489:110-117. [PMID: 35718236 DOI: 10.1016/j.ydbio.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/28/2022] [Accepted: 06/14/2022] [Indexed: 11/19/2022]
Abstract
The production of the tissues that make up the mammalian embryonic trunk takes place in a head-tail direction, via the differentiation of posteriorly-located axial progenitor populations. These include bipotent neuromesodermal progenitors (NMPs), which generate both spinal cord neurectoderm and presomitic mesoderm, the precursor of the musculoskeleton. Over the past few years, a number of studies have described the derivation of NMP-like cells from mouse and human pluripotent stem cells (PSCs). In turn, these have greatly facilitated the establishment of PSC differentiation protocols aiming to give rise efficiently to posterior mesodermal and neural cell types, which have been particularly challenging to produce using previous approaches. Moreover, the advent of 3-dimensional-based culture systems incorporating distinct axial progenitor-derived cell lineages has opened new avenues toward the functional dissection of early patterning events and cell vs non-cell autonomous effects. Here, we provide a brief overview of the applications of these cell types in disease modelling and cell therapy and speculate on their potential uses in the future.
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Affiliation(s)
- Fay Cooper
- Centre for Stem Cell Biology, School of Bioscience, The University of Sheffield, Western Bank, Sheffield, S10 2TN, United Kingdom; Neuroscience Institute, The University of Sheffield, Western Bank, Sheffield, S10 2TN, United Kingdom
| | - Anestis Tsakiridis
- Centre for Stem Cell Biology, School of Bioscience, The University of Sheffield, Western Bank, Sheffield, S10 2TN, United Kingdom; Neuroscience Institute, The University of Sheffield, Western Bank, Sheffield, S10 2TN, United Kingdom.
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16
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Capon SJ, Uribe V, Dominado N, Ehrlich O, Smith KA. Endocardial identity is established during early somitogenesis by Bmp signalling acting upstream of npas4l and etv2. Development 2022; 149:275317. [PMID: 35531980 PMCID: PMC9148566 DOI: 10.1242/dev.190421] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 03/28/2022] [Indexed: 12/28/2022]
Abstract
The endocardium plays important roles in the development and function of the vertebrate heart; however, few molecular markers of this tissue have been identified and little is known about what regulates its differentiation. Here, we describe the Gt(SAGFF27C); Tg(4xUAS:egfp) line as a marker of endocardial development in zebrafish. Transcriptomic comparison between endocardium and pan-endothelium confirms molecular distinction between these populations and time-course analysis suggests differentiation as early as eight somites. To investigate what regulates endocardial identity, we employed npas4l, etv2 and scl loss-of-function models. Endocardial expression is lost in npas4l mutants, significantly reduced in etv2 mutants and only modestly affected upon scl loss-of-function. Bmp signalling was also examined: overactivation of Bmp signalling increased endocardial expression, whereas Bmp inhibition decreased expression. Finally, epistasis experiments showed that overactivation of Bmp signalling was incapable of restoring endocardial expression in etv2 mutants. By contrast, overexpression of either npas4l or etv2 was sufficient to rescue endocardial expression upon Bmp inhibition. Together, these results describe the differentiation of the endocardium, distinct from vasculature, and place npas4l and etv2 downstream of Bmp signalling in regulating its differentiation. Summary: A zebrafish transgenic reporter of the endocardium is identified, permitting transcriptomic analysis and identification of new endocardial markers. Epistasis experiments demonstrate npas4l and etv2 act downstream of Bmp signalling to regulate endocardial differentiation.
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Affiliation(s)
- Samuel J Capon
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Veronica Uribe
- Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Nicole Dominado
- Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Ophelia Ehrlich
- Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Kelly A Smith
- Division of Genomics of Development and Disease, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia.,Department of Anatomy & Physiology, The University of Melbourne, Melbourne, Victoria 3010, Australia
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17
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Paulissen E, Palmisano NJ, Waxman J, Martin BL. Somite morphogenesis is required for axial blood vessel formation during zebrafish embryogenesis. eLife 2022; 11:74821. [PMID: 35137687 PMCID: PMC8863375 DOI: 10.7554/elife.74821] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Angioblasts that form the major axial blood vessels of the dorsal aorta and cardinal vein migrate toward the embryonic midline from distant lateral positions. Little is known about what controls the precise timing of angioblast migration and their final destination at the midline. Using zebrafish, we found that midline angioblast migration requires neighboring tissue rearrangements generated by somite morphogenesis. The somitic shape changes cause the adjacent notochord to separate from the underlying endoderm, creating a ventral midline cavity that provides a physical space for the angioblasts to migrate into. The anterior to posterior progression of midline angioblast migration is facilitated by retinoic acid-induced anterior to posterior somite maturation and the subsequent progressive opening of the ventral midline cavity. Our work demonstrates a critical role for somite morphogenesis in organizing surrounding tissues to facilitate notochord positioning and angioblast migration, which is ultimately responsible for creating a functional cardiovascular system.
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Affiliation(s)
- Eric Paulissen
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, United States
| | - Nicholas J Palmisano
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, United States
| | - Joshua Waxman
- Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| | - Benjamin Louis Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, United States
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18
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Walker SE, Sabin KZ, Gearhart MD, Yamamoto K, Echeverri K. Regulation of stem cell identity by miR-200a during spinal cord regeneration. Development 2022; 149:274347. [PMID: 35156681 PMCID: PMC8918811 DOI: 10.1242/dev.200033] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 01/05/2022] [Indexed: 01/04/2023]
Abstract
Axolotls are an important model organism for multiple types of regeneration, including functional spinal cord regeneration. Remarkably, axolotls can repair their spinal cord after a small lesion injury and can also regenerate their entire tail following amputation. Several classical signaling pathways that are used during development are reactivated during regeneration, but how this is regulated remains a mystery. We have previously identified miR-200a as a key factor that promotes successful spinal cord regeneration. Here, using RNA-seq analysis, we discovered that the inhibition of miR-200a results in an upregulation of the classical mesodermal marker brachyury in spinal cord cells after injury. However, these cells still express the neural stem cell marker sox2. In vivo cell tracking allowed us to determine that these cells can give rise to cells of both the neural and mesoderm lineage. Additionally, we found that miR-200a can directly regulate brachyury via a seed sequence in the 3′UTR of the gene. Our data indicate that miR-200a represses mesodermal cell fate after a small lesion injury in the spinal cord when only glial cells and neurons need to be replaced. Summary: Axolotl spinal cord cells have the potential to form cells of the ectoderm and mesoderm depending on the extent of the injury they are responding to.
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Affiliation(s)
- Sarah E Walker
- Eugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological Laboratory, Woods Hole, MA 02543, USA
| | - Keith Z Sabin
- Eugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological Laboratory, Woods Hole, MA 02543, USA
| | | | | | - Karen Echeverri
- Eugene Bell Center for Regenerative Biology and Tissue Engineering, Marine Biological Laboratory, Woods Hole, MA 02543, USA
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19
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Della Gaspera B, Weill L, Chanoine C. Evolution of Somite Compartmentalization: A View From Xenopus. Front Cell Dev Biol 2022; 9:790847. [PMID: 35111756 PMCID: PMC8802780 DOI: 10.3389/fcell.2021.790847] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/26/2021] [Indexed: 11/13/2022] Open
Abstract
Somites are transitory metameric structures at the basis of the axial organization of vertebrate musculoskeletal system. During evolution, somites appear in the chordate phylum and compartmentalize mainly into the dermomyotome, the myotome, and the sclerotome in vertebrates. In this review, we summarized the existing literature about somite compartmentalization in Xenopus and compared it with other anamniote and amniote vertebrates. We also present and discuss a model that describes the evolutionary history of somite compartmentalization from ancestral chordates to amniote vertebrates. We propose that the ancestral organization of chordate somite, subdivided into a lateral compartment of multipotent somitic cells (MSCs) and a medial primitive myotome, evolves through two major transitions. From ancestral chordates to vertebrates, the cell potency of MSCs may have evolved and gave rise to all new vertebrate compartments, i.e., the dermomyome, its hypaxial region, and the sclerotome. From anamniote to amniote vertebrates, the lateral MSC territory may expand to the whole somite at the expense of primitive myotome and may probably facilitate sclerotome formation. We propose that successive modifications of the cell potency of some type of embryonic progenitors could be one of major processes of the vertebrate evolution.
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20
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Martin BL. Mesoderm induction and patterning: Insights from neuromesodermal progenitors. Semin Cell Dev Biol 2021; 127:37-45. [PMID: 34840081 DOI: 10.1016/j.semcdb.2021.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/02/2021] [Accepted: 11/10/2021] [Indexed: 12/23/2022]
Abstract
The discovery of mesoderm inducing signals helped usher in the era of molecular developmental biology, and today the mechanisms of mesoderm induction and patterning are still intensely studied. Mesoderm induction begins during gastrulation, but recent evidence in vertebrates shows that this process continues after gastrulation in a group of posteriorly localized cells called neuromesodermal progenitors (NMPs). NMPs reside within the post-gastrulation embryonic structure called the tailbud, where they make a lineage decision between ectoderm (spinal cord) and mesoderm. The majority of NMP-derived mesoderm generates somites, but also contributes to lateral mesoderm fates such as endothelium. The discovery of NMPs provides a new paradigm in which to study vertebrate mesoderm induction. This review will discuss mechanisms of mesoderm induction within NMPs, and how they have informed our understanding of mesoderm induction more broadly within vertebrates as well as animal species outside of the vertebrate lineage. Special focus will be given to the signaling networks underlying NMP-derived mesoderm induction and patterning, as well as emerging work on the significance of partial epithelial-mesenchymal states in coordinating cell fate and morphogenesis.
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Affiliation(s)
- Benjamin L Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794-5215, USA.
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21
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Hayashi S, Suzuki H, Takemoto T. The nephric mesenchyme lineage of intermediate mesoderm is derived from Tbx6-expressing derivatives of neuro-mesodermal progenitors via BMP-dependent Osr1 function. Dev Biol 2021; 478:155-162. [PMID: 34256037 DOI: 10.1016/j.ydbio.2021.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 06/07/2021] [Accepted: 07/07/2021] [Indexed: 11/18/2022]
Abstract
In vertebrate embryos, the kidney primordium metanephros is formed from two distinct cell lineages, Wolffian duct and metanephric mesenchyme, which were classically grouped as intermediate mesoderm. Whereas the reciprocal interactions between these two cell populations in kidney development have been studied extensively, the mechanisms generating them remain elusive. Here, we show that the mouse cell lineage that forms nephric mesenchyme develops as a subpopulation of Tbx6-expressing mesodermal precursor derivatives of neuro-mesodermal progenitors (NMPs) under the condition of bone morphogenetic protein (BMP)-signal-dependent Osr1 expression. The Osr1-expressing nephric mesenchyme precursors were confirmed as descendants of NMPs because they were labeled by Sox2 N1 enhancer-EGFP. In Tbx6 mutant embryos, nephric mesenchyme changed its fate into neural tissues, which reflected its NMP origin. In Osr1 mutant embryos, the specific region of the Tbx6-expressing mesoderm precursor, which normally expresses Osr1 and develops into the nephric mesenchyme, instead expressed the somite marker FoxC2. BMP signaling activated Osr1 expression in a region of TBX6-expressing mesoderm and elicited nephric mesenchyme development. This study suggested a new model of cell lineage segregation during gastrulation.
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Affiliation(s)
- Shinichi Hayashi
- Laboratory of Embryology, Institute of Medical Advanced Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
| | - Hitomi Suzuki
- Laboratory of Embryology, Institute of Medical Advanced Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
| | - Tatsuya Takemoto
- Laboratory of Embryology, Institute of Medical Advanced Sciences, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan.
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22
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Metikala S, Casie Chetty S, Sumanas S. Single-cell transcriptome analysis of the zebrafish embryonic trunk. PLoS One 2021; 16:e0254024. [PMID: 34234366 PMCID: PMC8263256 DOI: 10.1371/journal.pone.0254024] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/17/2021] [Indexed: 11/27/2022] Open
Abstract
During embryonic development, cells differentiate into a variety of distinct cell types and subtypes with diverse transcriptional profiles. To date, transcriptomic signatures of different cell lineages that arise during development have been only partially characterized. Here we used single-cell RNA-seq to perform transcriptomic analysis of over 20,000 cells disaggregated from the trunk region of zebrafish embryos at the 30 hpf stage. Transcriptional signatures of 27 different cell types and subtypes were identified and annotated during this analysis. This dataset will be a useful resource for many researchers in the fields of developmental and cellular biology and facilitate the understanding of molecular mechanisms that regulate cell lineage choices during development.
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Affiliation(s)
- Sanjeeva Metikala
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Pathology and Cell Biology, USF Health Heart Institute, University of South Florida, Tampa, FL, United States of America
| | - Satish Casie Chetty
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States of America
- Molecular and Developmental Biology Graduate Program, University of Cincinnati, Cincinnati, OH, United States of America
| | - Saulius Sumanas
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Pathology and Cell Biology, USF Health Heart Institute, University of South Florida, Tampa, FL, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
- * E-mail:
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23
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Sox2 and Canonical Wnt Signaling Interact to Activate a Developmental Checkpoint Coordinating Morphogenesis with Mesoderm Fate Acquisition. Cell Rep 2020; 33:108311. [PMID: 33113369 PMCID: PMC7653682 DOI: 10.1016/j.celrep.2020.108311] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 09/11/2020] [Accepted: 10/05/2020] [Indexed: 12/11/2022] Open
Abstract
Animal embryogenesis requires a precise coordination between morphogenesis and cell fate specification. During mesoderm induction, mesodermal fate acquisition is tightly coordinated with the morphogenetic process of epithelial-to-mesenchymal transition (EMT). In zebrafish, cells exist transiently in a partial EMT state during mesoderm induction. Here, we show that cells expressing the transcription factor Sox2 are held in the partial EMT state, stopping them from completing the EMT and joining the mesoderm. This is critical for preventing the formation of ectopic neural tissue. The mechanism involves synergy between Sox2 and the mesoderm-inducing canonical Wnt signaling pathway. When Wnt signaling is inhibited in Sox2-expressing cells trapped in the partial EMT, cells exit into the mesodermal territory but form an ectopic spinal cord instead of mesoderm. Our work identifies a critical developmental checkpoint that ensures that morphogenetic movements establishing the mesodermal germ layer are accompanied by robust mesodermal cell fate acquisition.
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24
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Chestnut B, Casie Chetty S, Koenig AL, Sumanas S. Single-cell transcriptomic analysis identifies the conversion of zebrafish Etv2-deficient vascular progenitors into skeletal muscle. Nat Commun 2020; 11:2796. [PMID: 32493965 PMCID: PMC7271194 DOI: 10.1038/s41467-020-16515-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 04/29/2020] [Indexed: 01/09/2023] Open
Abstract
Cell fate decisions involved in vascular and hematopoietic embryonic development are still poorly understood. An ETS transcription factor Etv2 functions as an evolutionarily conserved master regulator of vasculogenesis. Here we report a single-cell transcriptomic analysis of hematovascular development in wild-type and etv2 mutant zebrafish embryos. Distinct transcriptional signatures of different types of hematopoietic and vascular progenitors are identified using an etv2ci32Gt gene trap line, in which the Gal4 transcriptional activator is integrated into the etv2 gene locus. We observe a cell population with a skeletal muscle signature in etv2-deficient embryos. We demonstrate that multiple etv2ci32Gt; UAS:GFP cells differentiate as skeletal muscle cells instead of contributing to vasculature in etv2-deficient embryos. Wnt and FGF signaling promote the differentiation of these putative multipotent etv2 progenitor cells into skeletal muscle cells. We conclude that etv2 actively represses muscle differentiation in vascular progenitors, thus restricting these cells to a vascular endothelial fate.
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Affiliation(s)
- Brendan Chestnut
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Satish Casie Chetty
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Andrew L Koenig
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.,Center for Cardiovascular Research, Washington University School of Medicine, 660S. Euclid Ave, St. Louis, MO, 63110, USA
| | - Saulius Sumanas
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA. .,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA.
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25
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Tangredi BP, Lawler DF. Osteoarthritis from evolutionary and mechanistic perspectives. Anat Rec (Hoboken) 2019; 303:2967-2976. [PMID: 31854144 DOI: 10.1002/ar.24339] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 10/15/2019] [Accepted: 11/11/2019] [Indexed: 12/21/2022]
Abstract
Developmental osteogenesis and the pathologies associated with tissues that normally are mineralized are active areas of research. All of the basic cell types of skeletal tissue evolved in early aquatic vertebrates. Their characteristics, transcription factors, and signaling pathways have been conserved, even as they adapted to the challenge imposed by gravity in the transition to terrestrial existence. The response to excess mechanical stress (among other factors) can be expressed in the pathologic phenotype described as osteoarthritis (OA). OA is mediated by epigenetic modification of the same conserved developmental gene networks, rather than by gene mutations or new chemical signaling pathways. Thus, these responses have their evolutionary roots in morphogenesis. Epigenetic channeling and heterochrony, orchestrated primarily by microRNAs, maintain the sequence of these responses, while allowing variation in their timing that depends at least partly on the life history of the individual.
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Affiliation(s)
- Basil P Tangredi
- Vermont Institute of Natural Sciences, Quechee, Vermont
- Sustainable Agriculture Program, Green Mountain College, Poultney, Vermont
| | - Dennis F Lawler
- Center for American Archaeology, Kampsville, Illinois
- Illinois State Museum, Springfield, Illinois
- Pacific Marine Mammal Center, Laguna Beach, California
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26
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Organization of Embryonic Morphogenesis via Mechanical Information. Dev Cell 2019; 49:829-839.e5. [PMID: 31178400 DOI: 10.1016/j.devcel.2019.05.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 03/20/2019] [Accepted: 05/03/2019] [Indexed: 01/19/2023]
Abstract
Embryonic organizers establish gradients of diffusible signaling molecules to pattern the surrounding cells. Here, we elucidate an additional mechanism of embryonic organizers that is a secondary consequence of morphogen signaling. Using pharmacological and localized transgenic perturbations, 4D imaging of the zebrafish embryo, systematic analysis of cell motion, and computational modeling, we find that the vertebrate tail organizer orchestrates morphogenesis over distances beyond the range of morphogen signaling. The organizer regulates the rate and coherence of cell motion in the elongating embryo using mechanical information that is transmitted via relay between neighboring cells. This mechanism is similar to a pressure front in granular media and other jammed systems, but in the embryo the mechanical information emerges from self-propelled cell movement and not force transfer between cells. The propagation likely relies upon local biochemical signaling that affects cell contractility, cell adhesion, and/or cell polarity but is independent of transcription and translation.
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Schliermann A, Nickel J. Unraveling the Connection between Fibroblast Growth Factor and Bone Morphogenetic Protein Signaling. Int J Mol Sci 2018; 19:ijms19103220. [PMID: 30340367 PMCID: PMC6214098 DOI: 10.3390/ijms19103220] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 10/07/2018] [Accepted: 10/16/2018] [Indexed: 12/19/2022] Open
Abstract
Ontogeny of higher organisms as well the regulation of tissue homeostasis in adult individuals requires a fine-balanced interplay of regulating factors that individually trigger the fate of particular cells to either stay undifferentiated or to differentiate towards distinct tissue specific lineages. In some cases, these factors act synergistically to promote certain cellular responses, whereas in other tissues the same factors antagonize each other. However, the molecular basis of this obvious dual signaling activity is still only poorly understood. Bone morphogenetic proteins (BMPs) and fibroblast growth factors (FGFs) are two major signal protein families that have a lot in common: They are both highly preserved between different species, involved in essential cellular functions, and their ligands vastly outnumber their receptors, making extensive signal regulation necessary. In this review we discuss where and how BMP and FGF signaling cross paths. The compiled data reflect that both factors synchronously act in many tissues, and that antagonism and synergism both exist in a context-dependent manner. Therefore, by challenging a generalization of the connection between these two pathways a new chapter in BMP FGF signaling research will be introduced.
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Affiliation(s)
- Anna Schliermann
- Lehrstuhl für Tissue Engineering und Regenerative Medizin, Universitätsklinikum Würzburg, Röntgenring 11, 97222 Würzburg, Germany.
| | - Joachim Nickel
- Lehrstuhl für Tissue Engineering und Regenerative Medizin, Universitätsklinikum Würzburg, Röntgenring 11, 97222 Würzburg, Germany.
- Fraunhofer Institut für Silicatforschung, Translationszentrum TLZ-RT, Röntgenring 11, 97222 Würzburg, Germany.
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