1
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Brooks PM, Lewis P, Million-Perez S, Yandulskaya AS, Khalil M, Janes M, Porco J, Walker E, Meyers JR. Pharmacological reprogramming of zebrafish lateral line supporting cells to a migratory progenitor state. Dev Biol 2024; 512:70-88. [PMID: 38729405 DOI: 10.1016/j.ydbio.2024.05.003] [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: 10/27/2023] [Revised: 04/17/2024] [Accepted: 05/07/2024] [Indexed: 05/12/2024]
Abstract
In the zebrafish lateral line, non-sensory supporting cells readily re-enter the cell cycle to generate new hair cells and supporting cells during homeostatic maintenance and following damage to hair cells. This contrasts with supporting cells from mammalian vestibular and auditory sensory epithelia which rarely re-enter the cell cycle, and hence loss of hair cells results in permanent sensory deficit. Lateral line supporting cells are derived from multipotent progenitor cells that migrate down the trunk midline as a primordium and are deposited to differentiate into a neuromast. We have found that we can revert zebrafish support cells back to a migratory progenitor state by pharmacologically altering the signaling environment to mimic that of the migratory primordium, with active Wnt signaling and repressed FGF signaling. The reverted supporting cells migrate anteriorly and posteriorly along the horizontal myoseptum and will re-epithelialize to form an increased number of neuromasts along the midline when the pharmacological agents are removed. These data demonstrate that supporting cells can be readily reprogrammed to a migratory multipotent progenitor state that can form new sensory neuromasts, which has important implications for our understanding of how the lateral line system matures and expands in fish and also suggest avenues for returning mammalian supporting cells back to a proliferative state.
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Affiliation(s)
- Paige M Brooks
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Parker Lewis
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Sara Million-Perez
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Anastasia S Yandulskaya
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Mahmoud Khalil
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Meredith Janes
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Joseph Porco
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Eleanor Walker
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
| | - Jason R Meyers
- Dept. of Biology and Program in Neuroscience, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA.
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2
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Zhang R, Ma Z, Wang J, Fan C. HIF signaling overactivation inhibits lateral line neuromast development through Wnt in zebrafish. Gene 2024; 898:148077. [PMID: 38097093 DOI: 10.1016/j.gene.2023.148077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/16/2023] [Accepted: 12/11/2023] [Indexed: 12/26/2023]
Abstract
The lateral line is critical for prey detection, predator avoidance, schooling, and rheotaxis behavior in fish. As similar to hair cells in the mammalian inner ear, the lateral line sensory organ called neuromasts is a popular model for hair cell regeneration. However, the mechanism of lateral line development has not been fully understood. In this study, we showed for the first time that hypoxia-inducible factor (HIF) signaling is involved in lateral line development in zebrafish. hif1ab and epas1b were highly expressed in neuromasts during lateral line development. Hypoxia response induced by a prolyl hydroxylase domain-containing proteins (PHD) inhibitor treatment or vhl gene knockout significantly reduced hair cells and support cells in neuromast during lateral line development. In addition, inhibition of Hif-1α or Epas1 could partially rescue hair cells in the larvae with increased HIF activity, respectively. Moreover, the support cell proliferation and the expression of Wnt target genes decreased in vhl mutants which suggests that Wnt signaling mediated the role of HIF signaling in lateral line development. Collectively, our results demonstrate that HIF signaling overactivation inhibits lateral line development in zebrafish and suggest that inhibition of HIF signaling might be a potential therapeutic method for hair cell death.
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Affiliation(s)
- Ran Zhang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Ziyue Ma
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Jian Wang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.
| | - Chunxin Fan
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China; Marine Biomedical Science and Technology Innovation Platform of Lingang New Area, Shanghai, China.
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3
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Megerson E, Kuehn M, Leifer B, Bell JM, Snyder JL, McGraw HF. Kremen1 regulates the regenerative capacity of support cells and mechanosensory hair cells in the zebrafish lateral line. iScience 2024; 27:108678. [PMID: 38205258 PMCID: PMC10776957 DOI: 10.1016/j.isci.2023.108678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/28/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024] Open
Abstract
Mechanosensory hair cells in the inner ear mediate the sensations of hearing and balance, and in the specialized lateral line sensory system of aquatic vertebrates, the sensation of water movement. In mammals, hair cells lack the ability to regenerate following damage, resulting in sensory deficits. In contrast, non-mammalian vertebrates, such as zebrafish, can renew hair cells throughout their lifespan. Wnt signaling is required for development of inner ear and lateral line hair cells and regulates regeneration. Kremen1 inhibits Wnt signaling and hair cell formation, though its role in regeneration is unknown. We used a zebrafish kremen1 mutant line to show overactive Wnt signaling results in supernumerary support cells and hair cell regeneration without increased proliferation, in contrast with the previously described role of Wnt signaling during hair cell regeneration. This work allows us to understand the biology of mechanosensory hair cells and how regeneration might be promoted following damage.
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Affiliation(s)
- Ellen Megerson
- Division of Biological and Biomedical Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO 64110, USA
- Integrated DNA Technologies, Inc, Coralville, IA 52241, USA
| | - Michael Kuehn
- Division of Biological and Biomedical Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO 64110, USA
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66103, USA
| | - Ben Leifer
- Division of Biological and Biomedical Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO 64110, USA
- Department of Population Health, University of Kansas Medical Center, Kansas City, KS 66103, USA
| | - Jon M. Bell
- Division of Biological and Biomedical Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO 64110, USA
| | - Julia L. Snyder
- Division of Biological and Biomedical Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO 64110, USA
| | - Hillary F. McGraw
- Division of Biological and Biomedical Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO 64110, USA
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4
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Zou J, Anai S, Ota S, Ishitani S, Oginuma M, Ishitani T. Determining zebrafish dorsal organizer size by a negative feedback loop between canonical/non-canonical Wnts and Tlr4/NFκB. Nat Commun 2023; 14:7194. [PMID: 37938219 PMCID: PMC10632484 DOI: 10.1038/s41467-023-42963-3] [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: 01/25/2023] [Accepted: 10/26/2023] [Indexed: 11/09/2023] Open
Abstract
In vertebrate embryos, the canonical Wnt ligand primes the formation of dorsal organizers that govern dorsal-ventral patterns by secreting BMP antagonists. In contrast, in Drosophila embryos, Toll-like receptor (Tlr)-mediated NFκB activation initiates dorsal-ventral patterning, wherein Wnt-mediated negative feedback regulation of Tlr/NFκB generates a BMP antagonist-secreting signalling centre to control the dorsal-ventral pattern. Although both Wnt and BMP antagonist are conserved among species, the involvement of Tlr/NFκB and feedback regulation in vertebrate organizer formation remains unclear. By imaging and genetic modification, we reveal that a negative feedback loop between canonical and non-canonical Wnts and Tlr4/NFκB determines the size of zebrafish organizer, and that Tlr/NFκB and Wnts switch initial cue and feedback mediator roles between Drosophila and zebrafish. Here, we show that canonical Wnt signalling stimulates the expression of the non-canonical Wnt5b ligand, activating the Tlr4 receptor to stimulate NFκB-mediated transcription of the Wnt antagonist frzb, restricting Wnt-dependent dorsal organizer formation.
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Affiliation(s)
- Juqi Zou
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Satoshi Anai
- Yuuai Medical Center, Tomigusuku, Okinawa, 901-0224, Japan
| | - Satoshi Ota
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo, 153-8904, Japan
| | - Shizuka Ishitani
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Masayuki Oginuma
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Tohru Ishitani
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan.
- Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Osaka, 565-0871, Japan.
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5
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Megerson E, Kuehn M, Leifer B, Bell J, McGraw HF. Kremen1 regulates the regenerative capacity of support cells and mechanosensory hair cells in the zebrafish lateral line. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.27.550825. [PMID: 37546780 PMCID: PMC10402150 DOI: 10.1101/2023.07.27.550825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Mechanosensory hair cells in the inner ear mediate the sensations of hearing and balance, and in a specialize lateral line sensory system of aquatic vertebrates, the sensation of water movement. In mammals, hair cells lack the ability of regenerate following damage, resulting in sensory deficits. In contrast, non-mammalian vertebrates, such zebrafish, can renew hair cells throughout the life of the animal. Wnt signaling is required for development of inner ear and lateral line hair cells and regulates regeneration. Kremen1 inhibits Wnt signaling and hair cell formation, though its role in regeneration has not been established. We use a zebrafish kremen1 mutant line, to show that when Wnt signaling is overactivated in the lateral line, excessive regeneration occurs in the absence of increased proliferation, due to an increase in support cells. This contrasts with the previously described role of Wnt signaling during hair cell regeneration. This work will allow us to understand the biology of mechanosensory hair cells, and how regeneration might be promoted following damage.
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6
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Lin MJ, Lee CM, Hsu WL, Chen BC, Lee SJ. Macrophages Break Interneuromast Cell Quiescence by Intervening in the Inhibition of Schwann Cells in the Zebrafish Lateral Line. Front Cell Dev Biol 2022; 10:907863. [PMID: 35846366 PMCID: PMC9285731 DOI: 10.3389/fcell.2022.907863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
In the zebrafish lateral line system, interneuromast cells (INCs) between neuromasts are kept quiescent by underlying Schwann cells (SWCs). Upon severe injuries that cause the complete loss of an entire neuromast, INCs can occasionally differentiate into neuromasts but how they escape from the inhibition by SWCs is still unclear. Using a genetic/chemical method to ablate a neuromast precisely, we found that a small portion of larvae can regenerate a new neuromast. However, the residual regeneration capacity was hindered by inhibiting macrophages. Using in toto imaging, we further discovered heterogeneities in macrophage behavior and distribution along the lateral line. We witnessed the crawling of macrophages between the injured lateral line and SWCs during regeneration and between the second primordium and the first mature lateral line during development. It implies that macrophages may physically alleviate the nerve inhibition to break the dormancy of INCs during regeneration and development in the zebrafish lateral line.
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Affiliation(s)
- Meng-Ju Lin
- Department of Life Science, National Taiwan University, Taipei, Taiwan, R.O.C.
| | - Chia-Ming Lee
- Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan, R.O.C.
| | - Wei-Lin Hsu
- Department of Life Science, National Taiwan University, Taipei, Taiwan, R.O.C.
| | - Bi-Chang Chen
- Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan, R.O.C.
| | - Shyh-Jye Lee
- Department of Life Science, National Taiwan University, Taipei, Taiwan, R.O.C.
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan, R.O.C.
- Center for Biotechnology, National Taiwan University, Taipei, Taiwan, R.O.C.
- *Correspondence: Shyh-Jye Lee,
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7
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Shkarina K, Hasel de Carvalho E, Santos JC, Ramos S, Leptin M, Broz P. Optogenetic activators of apoptosis, necroptosis, and pyroptosis. J Cell Biol 2022; 221:e202109038. [PMID: 35420640 PMCID: PMC9014795 DOI: 10.1083/jcb.202109038] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 02/16/2022] [Accepted: 03/18/2022] [Indexed: 12/20/2022] Open
Abstract
Targeted and specific induction of cell death in an individual or groups of cells hold the potential for new insights into the response of tissues or organisms to different forms of death. Here, we report the development of optogenetically controlled cell death effectors (optoCDEs), a novel class of optogenetic tools that enables light-mediated induction of three types of programmed cell death (PCD)-apoptosis, pyroptosis, and necroptosis-using Arabidopsis thaliana photosensitive protein Cryptochrome-2. OptoCDEs enable a rapid and highly specific induction of PCD in human, mouse, and zebrafish cells and are suitable for a wide range of applications, such as sub-lethal cell death induction or precise elimination of single cells or cell populations in vitro and in vivo. As the proof-of-concept, we utilize optoCDEs to assess the differences in neighboring cell responses to apoptotic or necrotic PCD, revealing a new role for shingosine-1-phosphate signaling in regulating the efferocytosis of the apoptotic cell by epithelia.
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Affiliation(s)
- Kateryna Shkarina
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | | | - José Carlos Santos
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Saray Ramos
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Maria Leptin
- Director’s Research, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Petr Broz
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
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8
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Haraoka Y, Akieda Y, Nagai Y, Mogi C, Ishitani T. Zebrafish imaging reveals TP53 mutation switching oncogene-induced senescence from suppressor to driver in primary tumorigenesis. Nat Commun 2022; 13:1417. [PMID: 35304872 PMCID: PMC8933407 DOI: 10.1038/s41467-022-29061-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 02/24/2022] [Indexed: 01/10/2023] Open
Abstract
Most tumours are thought to arise through oncogenic cell generation followed by additional mutations. How a new oncogenic cell primes tumorigenesis by acquiring additional mutations remains unclear. We show that an additional TP53 mutation stimulates primary tumorigenesis by switching oncogene-induced senescence from a tumour suppressor to a driver. Zebrafish imaging reveals that a newly emerged oncogenic cell with the RasG12V mutation becomes senescent and is eliminated from the epithelia, which is prevented by adding a TP53 gain-of-function mutation (TP53R175H) into RasG12V cells. Surviving RasG12V-TP53R175H double-mutant cells senesce and secrete senescence-associated secretory phenotype (SASP)-related inflammatory molecules that convert neighbouring normal cells into SASP factor-secreting senescent cells, generating a heterogeneous tumour-like cell mass. We identify oncogenic cell behaviours that may control the initial human tumorigenesis step. Ras and TP53 mutations and cellular senescence are frequently detected in human tumours; similar switching may occur during the initial step of human tumorigenesis. It is unclear how a single oncogenic cell primes tumorigenesis. Here the authors visualised this behaviour using a zebrafish larval skin as a model and show that RasG12V oncogenic cell is eliminated through oncogene-senescence while a gain of function mutation in p53 alters this behaviour from tumour suppressive to tumour promoting.
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Affiliation(s)
- Yukinari Haraoka
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuki Akieda
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuri Nagai
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Chihiro Mogi
- Institute for Molecular & Cellular Regulation, Gunma University, Gunma, 371-8512, Japan
| | - Tohru Ishitani
- Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan. .,Institute for Molecular & Cellular Regulation, Gunma University, Gunma, 371-8512, Japan. .,Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Osaka, 565-0871, Japan.
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9
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Abstract
A definite identification of epidermal stem cells is not known and the mechanism of epidermal differentiation is not fully understood. Toward both of these quests, considerable information is available from the research on lineage tracing and clonal growth analysis in the basal layer of the epidermis, on the hair follicle and the interfollicular epidermal stem cells, and on Wnt signaling along with its role in the developmental patterning and cell differentiation. In this paper, literature on the aforementioned research has been collated and analyzed. In addition, models of the basal layer cellular composition and the epidermal differentiation have been presented. Graphical Abstract.
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Affiliation(s)
- Raghvendra Singh
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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10
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Lohani S, Funato Y, Akieda Y, Mizutani K, Takai Y, Ishitani T, Miki H. A novel role of PRL in regulating epithelial cell density by inducing apoptosis at confluence. J Cell Sci 2021; 135:273809. [PMID: 34931244 DOI: 10.1242/jcs.258550] [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: 02/12/2021] [Accepted: 12/02/2021] [Indexed: 11/20/2022] Open
Abstract
Maintaining proper epithelial cell density is essential for the survival of multicellular organisms. While regulation of cell density through apoptosis is well known, its mechanistic details remain elusive. Here, we report the involvement of membrane-anchored phosphatase of regenerating liver (PRL), originally known for its role in cancer malignancy, in this process. In epithelial MDCK cells, upon confluence, doxycycline-induced expression of PRL upregulated apoptosis, reducing the cell density. This could be circumvented by artificially reducing the cell density via stretching the cell-seeded silicon chamber. Moreover, siRNA-mediated knockdown of endogenous PRL blocked apoptosis, leading to greater cell density. Mechanistically, PRL promoted apoptosis by upregulating the translation of E-cadherin and activating TGF-β pathway. Morpholino-mediated inhibition of PRL expression in zebrafish embryos caused developmental defect with reduced apoptosis and increased epithelial cell density during convergent extension. This study revealed a novel role of PRL in regulating density-dependent apoptosis in vertebrate epithelium.
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Affiliation(s)
- Sweksha Lohani
- Department of Cellular Regulation, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yosuke Funato
- Department of Cellular Regulation, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuki Akieda
- Department of Homeostatic Regulation, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kiyohito Mizutani
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Yoshimi Takai
- Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0047, Japan
| | - Tohru Ishitani
- Department of Homeostatic Regulation, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan.,Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroaki Miki
- Department of Cellular Regulation, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan.,Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita, Osaka 565-0871, Japan
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11
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Wang J, Wang D, Hu G, Yang L, Liu Z, Yan D, Serikuly N, Alpyshov E, Demin KA, Strekalova T, Gil Barcellos LJ, Barcellos HHA, Amstislavskaya TG, de Abreu MS, Kalueff AV. The role of auditory and vibration stimuli in zebrafish neurobehavioral models. Behav Processes 2021; 193:104505. [PMID: 34547376 DOI: 10.1016/j.beproc.2021.104505] [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: 01/21/2021] [Revised: 09/09/2021] [Accepted: 09/14/2021] [Indexed: 11/16/2022]
Abstract
Strongly affecting human and animal physiology, sounds and vibration are critical environmental factors whose complex role in behavioral and brain functions necessitates further clinical and experimental studies. Zebrafish are a promising model organism for neuroscience research, including probing the contribution of auditory and vibration stimuli to neurobehavioral processes. Here, we summarize mounting evidence on the role of sound and vibration in zebrafish behavior and brain function, and outline future directions of translational research in this field. With the growing environmental exposure to noise and vibration, we call for more active use of zebrafish models for probing neurobehavioral and bioenvironmental consequences of acute and long-term exposure to sounds and vibration in complex biological systems.
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Affiliation(s)
- Jingtao Wang
- School of Pharmacy, Southwest University, Chongqing, China
| | - Dongmei Wang
- School of Pharmacy, Southwest University, Chongqing, China
| | - Guojun Hu
- School of Pharmacy, Southwest University, Chongqing, China
| | - LongEn Yang
- School of Pharmacy, Southwest University, Chongqing, China
| | - ZiYuan Liu
- School of Pharmacy, Southwest University, Chongqing, China
| | - Dongni Yan
- School of Pharmacy, Southwest University, Chongqing, China
| | - Nazar Serikuly
- School of Pharmacy, Southwest University, Chongqing, China
| | - Erik Alpyshov
- School of Pharmacy, Southwest University, Chongqing, China
| | - Konstantin A Demin
- St. Petersburg State University, St. Petersburg, Russia; Neurobiology Program, Sirius University, Sochi, Russia
| | - Tatiana Strekalova
- I.M. Sechenov First Moscow State Medical University, Moscow, Russia; Maastricht University, Maastricht, The Netherlands; Research Institute of General Pathology and Pathophysiology, Moscow, Russia
| | - Leonardo J Gil Barcellos
- Graduate Programs in Bio-experimentation and Environmental Sciences, University of Passo Fundo, Passo Fundo, Brazil; Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil
| | | | | | - Murilo S de Abreu
- Bioscience Institute, University of Passo Fundo, Passo Fundo, Brazil; Laboratory of Cell and Molecular Biology and Neurobiology, Moscow Institute of Physics and Technology, Moscow, Russia.
| | - Allan V Kalueff
- School of Pharmacy, Southwest University, Chongqing, China; Ural Federal University, Ekaterinburg, Russia.
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12
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Seleit A, Gross K, Onistschenko J, Hoang OP, Theelke J, Centanin L. Local tissue interactions govern pLL patterning in medaka. Dev Biol 2021; 481:1-13. [PMID: 34517003 DOI: 10.1016/j.ydbio.2021.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/12/2021] [Accepted: 09/03/2021] [Indexed: 11/03/2022]
Abstract
Vertebrate organs are arranged in a stereotypic, species-specific position along the animal body plan. Substantial morphological variation exists between related species, especially so in the vastly diversified teleost clade. It is still unclear how tissues, organs and systems can accommodate such diverse scaffolds. Here, we use the distinctive arrangement of neuromasts in the posterior lateral line (pLL) system of medaka fish to address the tissue-interactions defining a pattern. We show that patterning in this peripheral nervous system is established by autonomous organ precursors independent of neuronal wiring. In addition, we target the keratin 15 gene to generate stuck-in-the-midline (siml) mutants, which display epithelial lesions and a disrupted pLL patterning. By using siml/wt chimeras, we determine that the aberrant siml pLL pattern depends on the mutant epithelium, since a wild type epithelium can rescue the siml phenotype. Inducing epithelial lesions by 2-photon laser ablation during pLL morphogenesis phenocopies siml genetic mutants and reveals that epithelial integrity defines the final position of the embryonic pLL neuromasts. Our results using the medaka pLL disentangle intrinsic from extrinsic properties during the establishment of a sensory system. We speculate that intrinsic programs guarantee proper organ morphogenesis, while instructive interactions from surrounding tissues facilitates the accommodation of sensory organs to the diverse body plans found among teleosts.
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Affiliation(s)
- Ali Seleit
- Laboratory of Clonal Analysis of Post-Embryonic Stem Cells, Centre for Organismal Studies (COS) Heidelberg, Im Neuenheimer Feld 230, Universität Heidelberg, 69120, Heidelberg, Germany; Heidelberg Biosciences International Graduate School (HBIGS), Universität Heidelberg, Heidelberg, Germany
| | - Karen Gross
- Laboratory of Clonal Analysis of Post-Embryonic Stem Cells, Centre for Organismal Studies (COS) Heidelberg, Im Neuenheimer Feld 230, Universität Heidelberg, 69120, Heidelberg, Germany; Heidelberg Biosciences International Graduate School (HBIGS), Universität Heidelberg, Heidelberg, Germany
| | - Jasmin Onistschenko
- Laboratory of Clonal Analysis of Post-Embryonic Stem Cells, Centre for Organismal Studies (COS) Heidelberg, Im Neuenheimer Feld 230, Universität Heidelberg, 69120, Heidelberg, Germany; Heidelberg Biosciences International Graduate School (HBIGS), Universität Heidelberg, Heidelberg, Germany
| | - Oi Pui Hoang
- Laboratory of Clonal Analysis of Post-Embryonic Stem Cells, Centre for Organismal Studies (COS) Heidelberg, Im Neuenheimer Feld 230, Universität Heidelberg, 69120, Heidelberg, Germany
| | - Jonas Theelke
- Laboratory of Clonal Analysis of Post-Embryonic Stem Cells, Centre for Organismal Studies (COS) Heidelberg, Im Neuenheimer Feld 230, Universität Heidelberg, 69120, Heidelberg, Germany
| | - Lázaro Centanin
- Laboratory of Clonal Analysis of Post-Embryonic Stem Cells, Centre for Organismal Studies (COS) Heidelberg, Im Neuenheimer Feld 230, Universität Heidelberg, 69120, Heidelberg, Germany.
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13
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Santra P, Amack JD. Loss of vacuolar-type H+-ATPase induces caspase-independent necrosis-like death of hair cells in zebrafish neuromasts. Dis Model Mech 2021; 14:dmm048997. [PMID: 34296747 PMCID: PMC8319552 DOI: 10.1242/dmm.048997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/15/2021] [Indexed: 01/24/2023] Open
Abstract
The vacuolar-type H+-ATPase (V-ATPase) is a multi-subunit proton pump that regulates cellular pH. V-ATPase activity modulates several cellular processes, but cell-type-specific functions remain poorly understood. Patients with mutations in specific V-ATPase subunits can develop sensorineural deafness, but the underlying mechanisms are unclear. Here, we show that V-ATPase mutations disrupt the formation of zebrafish neuromasts, which serve as a model to investigate hearing loss. V-ATPase mutant neuromasts are small and contain pyknotic nuclei that denote dying cells. Molecular markers and live imaging show that loss of V-ATPase induces mechanosensory hair cells in neuromasts, but not neighboring support cells, to undergo caspase-independent necrosis-like cell death. This is the first demonstration that loss of V-ATPase can lead to necrosis-like cell death in a specific cell type in vivo. Mechanistically, loss of V-ATPase reduces mitochondrial membrane potential in hair cells. Modulating the mitochondrial permeability transition pore, which regulates mitochondrial membrane potential, improves hair cell survival. These results have implications for understanding the causes of sensorineural deafness, and more broadly, reveal functions for V-ATPase in promoting survival of a specific cell type in vivo.
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Affiliation(s)
- Peu Santra
- 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
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse, NY 13244, USA
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14
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Wang J, Lu C, Zhao Y, Tang Z, Song J, Fan C. Transcriptome profiles of sturgeon lateral line electroreceptor and mechanoreceptor during regeneration. BMC Genomics 2020; 21:875. [PMID: 33287707 PMCID: PMC7720607 DOI: 10.1186/s12864-020-07293-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 11/28/2020] [Indexed: 11/10/2022] Open
Abstract
Background The electrosensory ampullary organs (AOs) and mechanosensory neuromasts (NMs) found in sturgeon and some other non-neopterygian fish or amphibians are both originated from lateral line placodes. However, these two sensory organs have characteristic morphological and physiological differences. The molecular mechanisms for the specification of AOs and NMs are not clearly understood. Results We sequenced the transcriptome for neomycin treated sturgeon AOs and NMs in the early regeneration stages, and de novo assembled a sturgeon transcriptome. By comparing the gene expression differences among untreated AOs, NMs and general epithelia (EPs), we located some specific genes for these two sensory organs. In sturgeon lateral line, the voltage-gated calcium channels and voltage-gated potassium channels were predominant calcium and potassium channel subtypes, respectively. And by correlating gene expression with the regeneration process, we predicated several candidate key transcriptional regulation related genes might be involved in AOs and NMs regeneration. Conclusions Genes with specific expression in the two lateral line sensory organs suggests their important roles in mechanoreceptor and electroreceptor formation. The candidate transcriptional regulation related genes may be important for mechano- and electro- receptor specification, in a “dosage-related” manner. These results suggested the molecular basis for specification of these two sensory organs in sturgeon.
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Affiliation(s)
- Jian Wang
- International Joint Center for Marine Biological Sciences Research, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Chengcheng Lu
- International Joint Center for Marine Biological Sciences Research, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Institute for Marine Biosystem and Neuroscience, International Center for Marine Studies, Shanghai Ocean University, Shanghai, China
| | - Yifan Zhao
- International Joint Center for Marine Biological Sciences Research, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Institute for Marine Biosystem and Neuroscience, International Center for Marine Studies, Shanghai Ocean University, Shanghai, China
| | - Zhijiao Tang
- Institute for Marine Biosystem and Neuroscience, International Center for Marine Studies, Shanghai Ocean University, Shanghai, China
| | - Jiakun Song
- Institute for Marine Biosystem and Neuroscience, International Center for Marine Studies, Shanghai Ocean University, Shanghai, China
| | - Chunxin Fan
- International Joint Center for Marine Biological Sciences Research, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China. .,Institute for Marine Biosystem and Neuroscience, International Center for Marine Studies, Shanghai Ocean University, Shanghai, China.
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15
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Ohgo S, Sakamoto T, Nakajima W, Matsunaga S, Wada N. Visualization of extracellular vesicles in the regenerating caudal fin blastema of zebrafish using in vivo electroporation. Biochem Biophys Res Commun 2020; 533:1371-1377. [PMID: 33077180 DOI: 10.1016/j.bbrc.2020.10.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 10/10/2020] [Indexed: 01/03/2023]
Abstract
Zebrafish have high regenerative ability in several organs including the fin. Although various mechanisms underlying fin regeneration have been revealed, some mechanisms remain to be elucidated. Recently, extracellular vesicles (EVs) have been the focus of research with regard to their role in cell-to-cell communication. It has been suggested that cells in regenerating tissues communicate using EVs. In this study, we examined the involvement of EVs in the caudal fin regeneration of zebrafish using an in vivo electroporation method. The process of regeneration appeared normal after in vivo electroporation, and the transferred plasmid showed mosaic expression in the blastema. We took advantage of this mosaic expression to observe the distribution of exosomal markers in the blastema. We transferred exosomal markers by in vivo electroporation and identified EVs in the regenerating caudal fin. The results suggest that blastemal cells communicate with other cells via EVs during caudal fin regeneration.
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Affiliation(s)
- Shiro Ohgo
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan.
| | - Takuya Sakamoto
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
| | - Wataru Nakajima
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
| | - Sachihiro Matsunaga
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
| | - Naoyuki Wada
- Department of Applied Biological Science, Tokyo University of Science, Noda, Japan
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16
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Wnt/β-catenin Signaling in Tissue Self-Organization. Genes (Basel) 2020; 11:genes11080939. [PMID: 32823838 PMCID: PMC7464740 DOI: 10.3390/genes11080939] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 12/13/2022] Open
Abstract
Across metazoans, animal body structures and tissues exist in robust patterns that arise seemingly out of stochasticity of a few early cells in the embryo. These patterns ensure proper tissue form and function during early embryogenesis, development, homeostasis, and regeneration. Fundamental questions are how these patterns are generated and maintained during tissue homeostasis and regeneration. Though fascinating scientists for generations, these ideas remain poorly understood. Today, it is apparent that the Wnt/β-catenin pathway plays a central role in tissue patterning. Wnt proteins are small diffusible morphogens which are essential for cell type specification and patterning of tissues. In this review, we highlight several mechanisms described where the spatial properties of Wnt/β-catenin signaling are controlled, allowing them to work in combination with other diffusible molecules to control tissue patterning. We discuss examples of this self-patterning behavior during development and adult tissues' maintenance. The combination of new physiological culture systems, mathematical approaches, and synthetic biology will continue to fuel discoveries about how tissues are patterned. These insights are critical for understanding the intricate interplay of core patterning signals and how they become disrupted in disease.
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17
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Iwasaki M, Yokoi H, Suzuki T, Kawakami K, Wada H. Development of the anterior lateral line system through local tissue-tissue interactions in the zebrafish head. Dev Dyn 2020; 249:1440-1454. [PMID: 32658373 DOI: 10.1002/dvdy.225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The distribution of sensory organs is important for detecting environmental signals efficiently. The mechanosensory receptors of the lateral line system, neuromasts, are stereotypically distributed over the head and body surface of fish, although how neuromasts arise in these predetermined positions during development remains unclear. RESULTS We investigated the development of the anterior lateral line (ALL) system in zebrafish head. The ALL neuromasts formed in the predetermined positions through proliferation and differentiation of (a) nonmigratory lateral line primordia, (b) migratory primordia, (c) interneuromast cells connecting preexisting neuromasts, and (d) budding primordia. We demonstrated that R-spondin2 (Rspo2), an activator of Wnt/β-catenin signaling, is required for the development of a particular set of neuromasts associated with hyomandibular cartilage. Further genetic analyses suggested that Rspo2, which emanates from the hyoid mesenchyme, acts on the adjacent neuromast progenitor cells to stimulate their proliferation through activating Wnt/β-catenin signaling. CONCLUSION This study has revealed novel mechanisms for neuromast positioning through local tissue-tissue interactions, providing insights into the development and evolution of the vertebrate head.
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Affiliation(s)
- Miki Iwasaki
- College of Liberal Arts and Sciences, Kitasato University, Sagamihara, Japan
| | - Hayato Yokoi
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Tohru Suzuki
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Koichi Kawakami
- National Institute of Genetics, The Graduate University for Advanced Studies (SOKENDAI), Mishima, Japan
| | - Hironori Wada
- College of Liberal Arts and Sciences, Kitasato University, Sagamihara, Japan
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18
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Kon T, Omori Y, Fukuta K, Wada H, Watanabe M, Chen Z, Iwasaki M, Mishina T, Matsuzaki SIS, Yoshihara D, Arakawa J, Kawakami K, Toyoda A, Burgess SM, Noguchi H, Furukawa T. The Genetic Basis of Morphological Diversity in Domesticated Goldfish. Curr Biol 2020; 30:2260-2274.e6. [PMID: 32392470 DOI: 10.1016/j.cub.2020.04.034] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/13/2020] [Accepted: 04/15/2020] [Indexed: 10/24/2022]
Abstract
Although domesticated goldfish strains exhibit highly diversified phenotypes in morphology, the genetic basis underlying these phenotypes is poorly understood. Here, based on analysis of transposable elements in the allotetraploid goldfish genome, we found that its two subgenomes have evolved asymmetrically since a whole-genome duplication event in the ancestor of goldfish and common carp. We conducted whole-genome sequencing of 27 domesticated goldfish strains and wild goldfish. We identified more than 60 million genetic variations and established a population genetic structure of major goldfish strains. Genome-wide association studies and analysis of strain-specific variants revealed genetic loci associated with several goldfish phenotypes, including dorsal fin loss, long-tail, telescope-eye, albinism, and heart-shaped tail. Our results suggest that accumulated mutations in the asymmetrically evolved subgenomes led to generation of diverse phenotypes in the goldfish domestication history. This study is a key resource for understanding the genetic basis of phenotypic diversity among goldfish strains.
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Affiliation(s)
- Tetsuo Kon
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka 565-0871, Japan
| | - Yoshihiro Omori
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka 565-0871, Japan.
| | - Kentaro Fukuta
- Center for Genome Informatics, Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Yata 1111, Mishima, Shizuoka 411-8540, Japan
| | - Hironori Wada
- College of Liberal Arts and Sciences, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Masakatsu Watanabe
- Laboratory of Pattern Formation, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka
| | - Zelin Chen
- Translational and Functional Genomics Branch, National Human Genome Research Institute, Bethesda, MD, USA
| | - Miki Iwasaki
- College of Liberal Arts and Sciences, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Tappei Mishina
- Laboratory of Animal Ecology, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | | | - Daiki Yoshihara
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka 565-0871, Japan
| | - Jumpei Arakawa
- Yatomi Station, Aichi Fisheries Research Institute, Yatomi, Aichi, Japan
| | - Koichi Kawakami
- Laboratory of Molecular and Developmental Biology, National Institute of Genetics, and Department of Genetics, The Graduate University for Advanced Studies (SOKENDAI), Mishima, Japan
| | - Atsushi Toyoda
- Comparative Genomics Laboratory, National Institute of Genetics, Yata 1111, Mishima, Shizuoka 411-8540, Japan
| | - Shawn M Burgess
- Translational and Functional Genomics Branch, National Human Genome Research Institute, Bethesda, MD, USA
| | - Hideki Noguchi
- Center for Genome Informatics, Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Yata 1111, Mishima, Shizuoka 411-8540, Japan; Advanced Genomics Center, National Institute of Genetics, Yata 1111, Mishima, Shizuoka 411-8540, Japan
| | - Takahisa Furukawa
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka 565-0871, Japan
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19
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Ye Z, Su Z, Xie S, Liu Y, Wang Y, Xu X, Zheng Y, Zhao M, Jiang L. Yap-lin28a axis targets let7-Wnt pathway to restore progenitors for initiating regeneration. eLife 2020; 9:55771. [PMID: 32352377 PMCID: PMC7250571 DOI: 10.7554/elife.55771] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/29/2020] [Indexed: 12/12/2022] Open
Abstract
The sox2 expressing (sox2+) progenitors in adult mammalian inner ear lose the capacity to regenerate while progenitors in the zebrafish lateral line are able to proliferate and regenerate damaged HCs throughout lifetime. To mimic the HC damage in mammals, we have established a zebrafish severe injury model to eliminate both progenitors and HCs. The atoh1a expressing (atoh1a+) HC precursors were the main population that survived post severe injury, and gained sox2 expression to initiate progenitor regeneration. In response to severe injury, yap was activated to upregulate lin28a transcription. Severe-injury-induced progenitor regeneration was disabled in lin28a or yap mutants. In contrary, overexpression of lin28a initiated the recovery of sox2+ progenitors. Mechanistically, microRNA let7 acted downstream of lin28a to activate Wnt pathway for promoting regeneration. Our findings that lin28a is necessary and sufficient to regenerate the exhausted sox2+ progenitors shed light on restoration of progenitors to initiate HC regeneration in mammals.
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Affiliation(s)
- Zhian Ye
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Zhongwu Su
- Department of Otolaryngology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Siyu Xie
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-Sen University, Ministry of Education, Guangzhou, China
| | - Yuye Liu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yongqiang Wang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xi Xu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-Sen University, Ministry of Education, Guangzhou, China
| | - Yiqing Zheng
- Department of Otolaryngology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Meng Zhao
- Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-Sen University, Ministry of Education, Guangzhou, China
| | - Linjia Jiang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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20
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Takeuchi Y, Narumi R, Akiyama R, Vitiello E, Shirai T, Tanimura N, Kuromiya K, Ishikawa S, Kajita M, Tada M, Haraoka Y, Akieda Y, Ishitani T, Fujioka Y, Ohba Y, Yamada S, Hosokawa Y, Toyama Y, Matsui T, Fujita Y. Calcium Wave Promotes Cell Extrusion. Curr Biol 2020; 30:670-681.e6. [DOI: 10.1016/j.cub.2019.11.089] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 11/07/2019] [Accepted: 11/29/2019] [Indexed: 12/15/2022]
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21
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Akieda Y, Ogamino S, Furuie H, Ishitani S, Akiyoshi R, Nogami J, Masuda T, Shimizu N, Ohkawa Y, Ishitani T. Cell competition corrects noisy Wnt morphogen gradients to achieve robust patterning in the zebrafish embryo. Nat Commun 2019; 10:4710. [PMID: 31624259 PMCID: PMC6797755 DOI: 10.1038/s41467-019-12609-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 09/18/2019] [Indexed: 12/31/2022] Open
Abstract
Morphogen signalling forms an activity gradient and instructs cell identities in a signalling strength-dependent manner to pattern developing tissues. However, developing tissues also undergo dynamic morphogenesis, which may produce cells with unfit morphogen signalling and consequent noisy morphogen gradients. Here we show that a cell competition-related system corrects such noisy morphogen gradients. Zebrafish imaging analyses of the Wnt/β-catenin signalling gradient, which acts as a morphogen to establish embryonic anterior-posterior patterning, identify that unfit cells with abnormal Wnt/β-catenin activity spontaneously appear and produce noise in the gradient. Communication between unfit and neighbouring fit cells via cadherin proteins stimulates apoptosis of the unfit cells by activating Smad signalling and reactive oxygen species production. This unfit cell elimination is required for proper Wnt/β-catenin gradient formation and consequent anterior-posterior patterning. Because this gradient controls patterning not only in the embryo but also in adult tissues, this system may support tissue robustness and disease prevention. Gradients of morphogens such as Wnt provide instructive cues for cell identities during development. Here, the authors report that in the developing zebrafish embryo, cell competition and elimination of unfit cells are required for proper Wnt gradient formation.
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Affiliation(s)
- Yuki Akieda
- Laboratory of Integrated Signaling Systems, Department of Molecular Medicine, Institute for Molecular & Cellular Regulation, Gunma University, Gunma, 371-8512, Japan.,Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Osaka, 565-0871, Japan
| | - Shohei Ogamino
- Laboratory of Integrated Signaling Systems, Department of Molecular Medicine, Institute for Molecular & Cellular Regulation, Gunma University, Gunma, 371-8512, Japan
| | - Hironobu Furuie
- Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.,Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Shizuka Ishitani
- Laboratory of Integrated Signaling Systems, Department of Molecular Medicine, Institute for Molecular & Cellular Regulation, Gunma University, Gunma, 371-8512, Japan
| | - Ryutaro Akiyoshi
- Biological Evaluation Technology 2, Research and Development, Olympus Corp., Tokyo, 192-8512, Japan
| | - Jumpei Nogami
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Takamasa Masuda
- Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Nobuyuki Shimizu
- Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Yasuyuki Ohkawa
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Tohru Ishitani
- Laboratory of Integrated Signaling Systems, Department of Molecular Medicine, Institute for Molecular & Cellular Regulation, Gunma University, Gunma, 371-8512, Japan. .,Department of Homeostatic Regulation, Division of Cellular and Molecular Biology, Research Institute for Microbial Diseases, Osaka University, Osaka, 565-0871, Japan. .,Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.
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22
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Tang D, He Y, Li W, Li H. Wnt/β-catenin interacts with the FGF pathway to promote proliferation and regenerative cell proliferation in the zebrafish lateral line neuromast. Exp Mol Med 2019; 51:1-16. [PMID: 31123246 PMCID: PMC6533250 DOI: 10.1038/s12276-019-0247-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/24/2018] [Accepted: 12/31/2018] [Indexed: 01/13/2023] Open
Abstract
Wnt and FGF are highly conserved signaling pathways found in various organs and have been identified as important regulators of auditory organ development. In this study, we used the zebrafish lateral line system to study the cooperative roles of the Wnt and FGF pathways in regulating progenitor cell proliferation and regenerative cell proliferation. We found that activation of Wnt signaling induced cell proliferation and increased the number of hair cells in both developing and regenerating neuromasts. We further demonstrated that FGF signaling was critically involved in Wnt-regulated proliferation, and inhibition of FGF abolished the Wnt stimulation-mediated effects on cell proliferation, while activating FGF signaling with basic fibroblast growth factor (bFGF) led to a partial rescue of the proliferative failure and hair cell defects in the absence of Wnt activity. Whole-mount in situ hybridization analysis showed that the expression of several FGF pathway genes, including pea3 and fgfr1, was increased in neuromasts after treatment with the Wnt pathway inducer BIO. Interestingly, when SU5402 was used to inhibit FGF signaling, neuromast cells expressed much lower levels of the FGF receptor gene, fgfr1, but produced increased levels of Wnt target genes, including ctnnb1, ctnnb2, and tcf7l2, while bFGF treatment produced no alterations in the expression of those genes, suggesting that fgfr1 might restrict Wnt signaling in neuromasts during proliferation. In summary, our analysis demonstrates that both the Wnt and FGF pathways are tightly integrated to modulate the proliferation of progenitor cells during early neuromast development and regenerative cell proliferation after neomycin-induced injury in the zebrafish neuromast. Studying sensory organs on the skin of zebrafish is revealing details of molecular signaling pathways that may be relevant to our own sensory systems, especially the hair cells of the ear. These cells have fine hair-like structures that move in response to sound waves and help generate electrical signals to the brain that result in perception of sound. Huawei Li and colleagues at Fudan University, Shanghai, China, studied the roles of two well-known cellular signaling pathways in regulating the proliferation of similar sensory hair cells in zebrafish, a commonly used model organism. These pathways involve cell surface proteins that interact with small extracellular molecules to stimulate molecular changes within cells. Learning how the pathways control hair cell generation and multiplication may assist modification of similar systems in humans to study and treat hearing loss.
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Affiliation(s)
- Dongmei Tang
- ENT institute and Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200031, China
| | - Yingzi He
- ENT institute and Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200031, China
| | - Wenyan Li
- ENT institute and Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200031, China
| | - Huawei Li
- ENT institute and Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200031, China. .,Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China. .,NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai, 200031, China. .,Shanghai Engineering Research Centre of Cochlear Implant, Shanghai, 200031, China. .,The Institutes of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, 200032, China.
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23
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Thomas ED, Raible DW. Distinct progenitor populations mediate regeneration in the zebrafish lateral line. eLife 2019; 8:43736. [PMID: 30834891 PMCID: PMC6433462 DOI: 10.7554/elife.43736] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 02/28/2019] [Indexed: 01/06/2023] Open
Abstract
Mechanosensory hair cells of the zebrafish lateral line regenerate rapidly following damage. These renewed hair cells arise from the proliferation of surrounding support cells, which undergo symmetric division to produce two hair cell daughters. Given the continued regenerative capacity of the lateral line, support cells presumably have the ability to replenish themselves. Utilizing novel transgenic lines, we identified support cell populations with distinct progenitor identities. These populations show differences in their ability to generate new hair cells during homeostasis and regeneration. Targeted ablation of support cells reduced the number of regenerated hair cells. Furthermore, progenitors regenerated after targeted support cell ablation in the absence of hair cell damage. We also determined that distinct support cell populations are independently regulated by Notch signaling. The existence of independent progenitor populations could provide flexibility for the continued generation of new hair cells under a variety of conditions throughout the life of the animal.
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Affiliation(s)
- Eric D Thomas
- Department of Biological Structure, University of Washington, Seattle, United States.,Graduate Program in Neuroscience, University of Washington, Seattle, United States
| | - David W Raible
- Department of Biological Structure, University of Washington, Seattle, United States.,Graduate Program in Neuroscience, University of Washington, Seattle, United States.,Virginia Merrill Bloedel Hearing Research Center, University of Washington, Seattle, United States
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24
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Lush ME, Diaz DC, Koenecke N, Baek S, Boldt H, St Peter MK, Gaitan-Escudero T, Romero-Carvajal A, Busch-Nentwich EM, Perera AG, Hall KE, Peak A, Haug JS, Piotrowski T. scRNA-Seq reveals distinct stem cell populations that drive hair cell regeneration after loss of Fgf and Notch signaling. eLife 2019; 8:e44431. [PMID: 30681411 PMCID: PMC6363392 DOI: 10.7554/elife.44431] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 01/24/2019] [Indexed: 12/25/2022] Open
Abstract
Loss of sensory hair cells leads to deafness and balance deficiencies. In contrast to mammalian hair cells, zebrafish ear and lateral line hair cells regenerate from poorly characterized support cells. Equally ill-defined is the gene regulatory network underlying the progression of support cells to differentiated hair cells. scRNA-Seq of lateral line organs uncovered five different support cell types, including quiescent and activated stem cells. Ordering of support cells along a developmental trajectory identified self-renewing cells and genes required for hair cell differentiation. scRNA-Seq analyses of fgf3 mutants, in which hair cell regeneration is increased, demonstrates that Fgf and Notch signaling inhibit proliferation of support cells in parallel by inhibiting Wnt signaling. Our scRNA-Seq analyses set the foundation for mechanistic studies of sensory organ regeneration and is crucial for identifying factors to trigger hair cell production in mammals. The data is searchable and publicly accessible via a web-based interface.
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Affiliation(s)
- Mark E Lush
- Stowers Institute for Medical ResearchKansas CityUnited States
| | - Daniel C Diaz
- Stowers Institute for Medical ResearchKansas CityUnited States
| | - Nina Koenecke
- Stowers Institute for Medical ResearchKansas CityUnited States
| | - Sungmin Baek
- Stowers Institute for Medical ResearchKansas CityUnited States
| | - Helena Boldt
- Stowers Institute for Medical ResearchKansas CityUnited States
| | | | | | - Andres Romero-Carvajal
- Stowers Institute for Medical ResearchKansas CityUnited States
- Pontificia Universidad Catolica del EcuadorCiencias BiologicasQuitoEcuador
| | - Elisabeth M Busch-Nentwich
- Wellcome Sanger Institute, Wellcome Genome CampusHinxtonUnited Kingdom
- Department of MedicineUniversity of CambridgeCambridgeUnited Kingdom
| | - Anoja G Perera
- Stowers Institute for Medical ResearchKansas CityUnited States
| | - Kathryn E Hall
- Stowers Institute for Medical ResearchKansas CityUnited States
| | - Allison Peak
- Stowers Institute for Medical ResearchKansas CityUnited States
| | - Jeffrey S Haug
- Stowers Institute for Medical ResearchKansas CityUnited States
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25
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Favarolo MB, López SL. Notch signaling in the division of germ layers in bilaterian embryos. Mech Dev 2018; 154:122-144. [PMID: 29940277 DOI: 10.1016/j.mod.2018.06.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/08/2018] [Accepted: 06/18/2018] [Indexed: 01/09/2023]
Abstract
Bilaterian embryos are triploblastic organisms which develop three complete germ layers (ectoderm, mesoderm, and endoderm). While the ectoderm develops mainly from the animal hemisphere, there is diversity in the location from where the endoderm and the mesoderm arise in relation to the animal-vegetal axis, ranging from endoderm being specified between the ectoderm and mesoderm in echinoderms, and the mesoderm being specified between the ectoderm and the endoderm in vertebrates. A common feature is that part of the mesoderm segregates from an ancient bipotential endomesodermal domain. The process of segregation is noisy during the initial steps but it is gradually refined. In this review, we discuss the role of the Notch pathway in the establishment and refinement of boundaries between germ layers in bilaterians, with special focus on its interaction with the Wnt/β-catenin pathway.
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Affiliation(s)
- María Belén Favarolo
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Biología Celular y Neurociencias "Prof. E. De Robertis" (IBCN), Facultad de Medicina, Laboratorio de Embriología Molecular "Prof. Dr. Andrés E. Carrasco", Buenos Aires, Argentina
| | - Silvia L López
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Biología Celular y Neurociencias "Prof. E. De Robertis" (IBCN), Facultad de Medicina, Laboratorio de Embriología Molecular "Prof. Dr. Andrés E. Carrasco", Buenos Aires, Argentina.
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26
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Epidermal regulation of bone morphogenesis through the development and regeneration of osteoblasts in the zebrafish scale. Dev Biol 2018. [DOI: 10.1016/j.ydbio.2018.03.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Viader-Llargués O, Lupperger V, Pola-Morell L, Marr C, López-Schier H. Live cell-lineage tracing and machine learning reveal patterns of organ regeneration. eLife 2018; 7:30823. [PMID: 29595471 PMCID: PMC5903862 DOI: 10.7554/elife.30823] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 03/28/2018] [Indexed: 12/28/2022] Open
Abstract
Despite the intrinsically stochastic nature of damage, sensory organs recapitulate normal architecture during repair to maintain function. Here we present a quantitative approach that combines live cell-lineage tracing and multifactorial classification by machine learning to reveal how cell identity and localization are coordinated during organ regeneration. We use the superficial neuromasts in larval zebrafish, which contain three cell classes organized in radial symmetry and a single planar-polarity axis. Visualization of cell-fate transitions at high temporal resolution shows that neuromasts regenerate isotropically to recover geometric order, proportions and polarity with exceptional accuracy. We identify mediolateral position within the growing tissue as the best predictor of cell-fate acquisition. We propose a self-regulatory mechanism that guides the regenerative process to identical outcome with minimal extrinsic information. The integrated approach that we have developed is simple and broadly applicable, and should help define predictive signatures of cellular behavior during the construction of complex tissues.
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Affiliation(s)
- Oriol Viader-Llargués
- Unit Sensory Biology & Organogenesis, Helmholtz Zentrum München, Neuherberg, Germany.,Laboratory of Sensory Cell Biology, Centre for Genomic Regulation, Barcelona, Spain
| | - Valerio Lupperger
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Laura Pola-Morell
- Unit Sensory Biology & Organogenesis, Helmholtz Zentrum München, Neuherberg, Germany.,Laboratory of Sensory Cell Biology, Centre for Genomic Regulation, Barcelona, Spain
| | - Carsten Marr
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Hernán López-Schier
- Unit Sensory Biology & Organogenesis, Helmholtz Zentrum München, Neuherberg, Germany.,Laboratory of Sensory Cell Biology, Centre for Genomic Regulation, Barcelona, Spain
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28
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Shibata E, Ando K, Murase E, Kawakami A. Heterogeneous fates and dynamic rearrangement of regenerative epidermis-derived cells during zebrafish fin regeneration. Development 2018; 145:dev.162016. [DOI: 10.1242/dev.162016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 03/20/2018] [Indexed: 01/14/2023]
Abstract
The regenerative epidermis (RE) is a specialized tissue that plays an essential role in tissue regeneration. However, the fate of the RE during and after regeneration is unknown. In this study, we performed Cre-loxP-mediated cell fate tracking and revealed the fates of major population of regenerative epidermis cells that express fibronectin 1b (fn1b) during zebrafish fin regeneration. Our study showed that these RE cells are mainly recruited from the inter-ray epidermis, and that they follow heterogeneous cell fates. Early recruited cells contribute to initial wound healing and soon disappear by apoptosis, while the later recruited cells contribute to the regenerated epidermis. Intriguingly, many of these cells were also expelled from the regenerated tissue by a dynamic caudal movement of the epidermis over time, and in turn the loss of epidermal cells was replenished by a global self-replication of basal and suprabasal cells in fin. De-differentiation of non-basal epidermal cells into the basal epidermal cells did not occur during regeneration. Overall, our study revealed heterogeneous fates of RE cells and a dynamic rearrangement of the epidermis during and after regeneration.
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Affiliation(s)
- Eri Shibata
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Kazunori Ando
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Emiko Murase
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Atsushi Kawakami
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
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29
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Diphtheria Toxin-Induced Cell Death Triggers Wnt-Dependent Hair Cell Regeneration in Neonatal Mice. J Neurosci 2017; 36:9479-89. [PMID: 27605621 DOI: 10.1523/jneurosci.2447-15.2016] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 07/20/2016] [Indexed: 12/16/2022] Open
Abstract
UNLABELLED Cochlear hair cells (HCs), the sensory cells that respond to sound, do not regenerate after damage in adult mammals, and their loss is a major cause of deafness. Here we show that HC regeneration in newborn mouse ears occurred spontaneously when the original cells were ablated by treatment with diphtheria toxin (DT) in ears that had been engineered to overexpress the DT receptor, but was not detectable when HCs were ablated in vivo by the aminoglycoside antibiotic neomycin. A variety of Wnts (Wnt1, Wnt2, Wnt2b, Wnt4, Wnt5a, Wnt7b, Wnt9a, Wnt9b, and Wnt11) and Wnt pathway component Krm2 were upregulated after DT damage. Nuclear β-catenin was upregulated in HCs and supporting cells of the DT-damaged cochlea. Pharmacological inhibition of Wnt decreased spontaneous regeneration, confirming a role of Wnt signaling in HC regeneration. Inhibition of Notch signaling further potentiated supporting cell proliferation and HC differentiation that occurred spontaneously. The absence of new HCs in the neomycin ears was correlated to less robust Wnt pathway activation, but the ears subjected to neomycin treatment nonetheless showed increased cell division and HC differentiation after subsequent forced upregulation of β-catenin. These studies suggest, first, that Wnt signaling plays a key role in regeneration, and, second, that the outcome of a regenerative response to damage in the newborn cochlea is determined by reaching a threshold level of Wnt signaling rather than its complete absence or presence. SIGNIFICANCE STATEMENT Sensory HCs of the inner ear do not regenerate in the adult, and their loss is a major cause of deafness. We found that HCs regenerated spontaneously in the newborn mouse after diphtheria toxin (DT)-induced, but not neomycin-induced, HC death. Regeneration depended on activation of Wnt signaling, and regeneration in DT-treated ears correlated to a higher level of Wnt activation than occurred in nonregenerating neomycin-treated ears. This is significant because insufficient regeneration caused by a failure to reach a threshold level of signaling, if true in the adult, has the potential to be exploited for development of clinical approaches for the treatment of deafness caused by HC loss.
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30
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Ionizing Radiation Blocks Hair Cell Regeneration in Zebrafish Lateral Line Neuromasts by Preventing Wnt Signaling. Mol Neurobiol 2017; 55:1639-1651. [DOI: 10.1007/s12035-017-0430-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 01/27/2017] [Indexed: 02/06/2023]
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31
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Kozlovskaja-Gumbrienė A, Yi R, Alexander R, Aman A, Jiskra R, Nagelberg D, Knaut H, McClain M, Piotrowski T. Proliferation-independent regulation of organ size by Fgf/Notch signaling. eLife 2017; 6. [PMID: 28085667 PMCID: PMC5235355 DOI: 10.7554/elife.21049] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 12/23/2016] [Indexed: 12/31/2022] Open
Abstract
Organ morphogenesis depends on the precise orchestration of cell migration, cell shape changes and cell adhesion. We demonstrate that Notch signaling is an integral part of the Wnt and Fgf signaling feedback loop coordinating cell migration and the self-organization of rosette-shaped sensory organs in the zebrafish lateral line system. We show that Notch signaling acts downstream of Fgf signaling to not only inhibit hair cell differentiation but also to induce and maintain stable epithelial rosettes. Ectopic Notch expression causes a significant increase in organ size independently of proliferation and the Hippo pathway. Transplantation and RNASeq analyses revealed that Notch signaling induces apical junctional complex genes that regulate cell adhesion and apical constriction. Our analysis also demonstrates that in the absence of patterning cues normally provided by a Wnt/Fgf signaling system, rosettes still self-organize in the presence of Notch signaling. DOI:http://dx.doi.org/10.7554/eLife.21049.001
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Affiliation(s)
| | - Ren Yi
- Stowers Institute for Medical Research, Kansas City, United States
| | | | - Andy Aman
- Stowers Institute for Medical Research, Kansas City, United States
| | - Ryan Jiskra
- Stowers Institute for Medical Research, Kansas City, United States
| | - Danielle Nagelberg
- Developmental Genetics Program and Kimmel Center for Stem Cell Biology, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, United States
| | - Holger Knaut
- Developmental Genetics Program and Kimmel Center for Stem Cell Biology, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, United States
| | - Melainia McClain
- Stowers Institute for Medical Research, Kansas City, United States
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32
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Mulvaney JF, Thompkins C, Noda T, Nishimura K, Sun WW, Lin SY, Coffin A, Dabdoub A. Kremen1 regulates mechanosensory hair cell development in the mammalian cochlea and the zebrafish lateral line. Sci Rep 2016; 6:31668. [PMID: 27550540 PMCID: PMC4994024 DOI: 10.1038/srep31668] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 07/21/2016] [Indexed: 02/06/2023] Open
Abstract
Here we present spatio-temporal localization of Kremen1, a transmembrane receptor, in the mammalian cochlea, and investigate its role in the formation of sensory organs in mammal and fish model organisms. We show that Kremen1 is expressed in prosensory cells during cochlear development and in supporting cells of the adult mouse cochlea. Based on this expression pattern, we investigated whether Kremen1 functions to modulate cell fate decisions in the prosensory domain of the developing cochlea. We used gain and loss-of-function experiments to show that Kremen1 is sufficient to bias cells towards supporting cell fate, and is implicated in suppression of hair cell formation. In addition to our findings in the mouse cochlea, we examined the effects of over expression and loss of Kremen1 in the zebrafish lateral line. In agreement with our mouse data, we show that over expression of Kremen1 has a negative effect on the number of mechanosensory cells that form in the zebrafish neuromasts, and that fish lacking Kremen1 protein develop more hair cells per neuromast compared to wild type fish. Collectively, these data support an inhibitory role for Kremen1 in hair cell fate specification.
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Affiliation(s)
- Joanna F Mulvaney
- Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada
| | - Cathrine Thompkins
- College of Arts and Sciences and Department of Integrative Physiology and Neuroscience, Washington State University, Vancouver, WA, USA
| | - Teppei Noda
- Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada
| | - Koji Nishimura
- Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada
| | - Willy W Sun
- Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada
| | - Shuh-Yow Lin
- Department of Surgery, School of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Allison Coffin
- College of Arts and Sciences and Department of Integrative Physiology and Neuroscience, Washington State University, Vancouver, WA, USA
| | - Alain Dabdoub
- Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, Toronto, ON, M4N 3M5, Canada.,Department of Otolaryngology - Head and Neck Surgery, Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
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33
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Kniss JS, Jiang L, Piotrowski T. Insights into sensory hair cell regeneration from the zebrafish lateral line. Curr Opin Genet Dev 2016; 40:32-40. [PMID: 27266973 DOI: 10.1016/j.gde.2016.05.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/09/2016] [Accepted: 05/22/2016] [Indexed: 10/21/2022]
Abstract
Loss of mechanosensory hair cells in the inner ear leads to loss of hearing. In humans this results in permanent deafness, as mammals are largely unable to regenerate hair cells. In contrast, zebrafish robustly regenerate hair cells in the sensory lateral line and ear and recent gene expression and time-lapse analyses of cell behaviors at the single cell level have greatly advanced our understanding of the mechanisms responsible for hair cell regeneration. In the lateral line, hair cell regeneration is controlled via dynamic interactions between Notch and Wnt/β-catenin signaling, and likely also between Fgf and the retinoic acid signaling pathways. Less is known about what initiates regeneration and we discuss potential pathways that may trigger proliferation after hair cell damage.
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Affiliation(s)
- Jonathan S Kniss
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - Linjia Jiang
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
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34
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Venero Galanternik M, Navajas Acedo J, Romero-Carvajal A, Piotrowski T. Imaging collective cell migration and hair cell regeneration in the sensory lateral line. Methods Cell Biol 2016; 134:211-56. [PMID: 27312495 DOI: 10.1016/bs.mcb.2016.01.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The accessibility of the lateral line system and its amenability to long-term in vivo imaging transformed the developing lateral line into a powerful model system to study fundamental morphogenetic events, such as guided migration, proliferation, cell shape changes, organ formation, organ deposition, cell specification and differentiation. In addition, the lateral line is not only amenable to live imaging during migration stages but also during postembryonic events such as sensory organ tissue homeostasis and regeneration. The robust regenerative capabilities of the mature, mechanosensory lateral line hair cells, which are homologous to inner ear hair cells and the ease with which they can be imaged, have brought zebrafish into the spotlight as a model to develop tools to treat human deafness. In this chapter, we describe protocols for long-term in vivo confocal imaging of the developing and regenerating lateral line.
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Affiliation(s)
- M Venero Galanternik
- Stowers Institute for Medical Research, Kansas City, MO, United States; University of Utah, Salt Lake City, UT, United States
| | - J Navajas Acedo
- Stowers Institute for Medical Research, Kansas City, MO, United States
| | - A Romero-Carvajal
- Stowers Institute for Medical Research, Kansas City, MO, United States; University of Utah, Salt Lake City, UT, United States
| | - T Piotrowski
- Stowers Institute for Medical Research, Kansas City, MO, United States; University of Utah, Salt Lake City, UT, United States
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Abstract
The Tol2 element is an active transposon that was found from the genome of the Japanese medaka fish. Since the Tol2 transposition system is active in all vertebrate cells tested so far, it has been applied to germ line transgenesis in various model animals including fish, frog, chicken, and mouse, and to gene transfer in culture cells. In zebrafish, the Tol2 system consists of the transposase mRNA and a Tol2 transposon-donor plasmid, and is introduced into fertilized eggs by microinjection. Thus genomic integrations of the Tol2 construct are generated in the germ lineage and transmitted to the offspring very efficiently. By using the Tol2 transposition system, we have developed important genetic methods, such as transgenesis, gene trapping, enhancer trapping, and the Gal4-UAS system in zebrafish and applied to many aspects of biological studies. In this chapter, we describe how these methods are performed.
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36
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Tulsulkar J, Nada SE, Slotterbeck BD, McInerney MF, Shah ZA. Obesity and hyperglycemia lead to impaired post-ischemic recovery after permanent ischemia in mice. Obesity (Silver Spring) 2016; 24:417-23. [PMID: 26694743 PMCID: PMC4731242 DOI: 10.1002/oby.21388] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 09/20/2015] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Obesity-induced diabetes has increased over the years and has become one of the risk factors for stroke. We investigated the influence of diet-induced obesity and hyperglycemia on permanent distal middle cerebral artery occlusion (pMCAO)-induced ischemic stroke in mice. METHODS Male C57/Bl6 mice were treated with a high-fat/high-carbohydrate diet [HFCD/obese and hyperglycemia (O/H)] or a normal diet (control) for 3.5 months, subjected to pMCAO, and sacrificed after 7 days. RESULTS Infarct volume analysis showed no differences between the O/H and control group, whereas neurological deficits were significantly higher in the O/H group compared to the control group. Sirtuin (Sirt1) was overexpressed and NADPH oxidase was reduced in the O/H group. O/H mice had significantly lower expression of Wnt and glycogen synthase kinase 3 α and β, a key component in the Wnt signaling pathway. Translocation of apoptosis inducing factor (AIF) to the nucleus was observed in both the O/H and control groups, but O/H mice showed a higher expression of AIF in the nucleus. CONCLUSIONS These data suggest that impaired Wnt signaling and active apoptosis result in reduced post-stroke recovery in obese and hyperglycemic mice.
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Affiliation(s)
- Jatin Tulsulkar
- Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo Ohio
| | - Shadia E. Nada
- Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo Ohio
| | - Brandon D. Slotterbeck
- Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo Ohio
| | - Marcia F. McInerney
- Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo Ohio
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo Ohio
- Center for Diabetes and Endocrine Research (CeDER), University of Toledo, Toledo Ohio
| | - Zahoor A. Shah
- Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo Ohio
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo Ohio
- Corresponding Author: Zahoor A. Shah, PhD, Department of Medicinal and Biological Chemistry, Department of Pharmacology and Experimental Therapeutics, University of Toledo, 3000 Arlington Avenue, Toledo, Ohio, 43614. Phone: 419-383-1587.
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37
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Kawakami K, Asakawa K, Hibi M, Itoh M, Muto A, Wada H. Gal4 Driver Transgenic Zebrafish. GENETICS, GENOMICS AND FISH PHENOMICS 2016; 95:65-87. [DOI: 10.1016/bs.adgen.2016.04.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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38
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Chemical Ototoxicity of the Fish Inner Ear and Lateral Line. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 877:419-37. [PMID: 26515324 DOI: 10.1007/978-3-319-21059-9_18] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hair cell-driven mechanosensory systems are crucial for successful execution of a number of behaviors in fishes, and have emerged as good models for exploring questions relevant to human hearing. This review focuses on ototoxic effects in the inner ear and lateral line system of fishes. We specifically examine studies where chemical ototoxins such as aminoglycoside antibiotics have been employed as tools to disable the lateral line. Lateral line ablation results in alterations to feeding behavior and orientation to water current in a variety of species. However, neither behavior is abolished in the presence of additional sensory cues, supporting the hypothesis that many fish behaviors are driven by multisensory integration. Within biomedical research, the larval zebrafish lateral line has become an important model system for understanding signaling mechanisms that contribute to hair cell death and for developing novel pharmacological therapies that protect hair cells from ototoxic damage. Furthermore, given that fishes robustly regenerate damaged hair cells, ototoxin studies in fishes have broadened our understanding of the molecular and genetic events in an innately regenerative system, offering potential targets for mammalian hair cell regeneration. Collectively, studies of fish mechanosensory systems have yielded insight into fish behavior and in mechanisms of hair cell death, protection, and regeneration.
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39
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Ulrich F, Carretero-Ortega J, Menéndez J, Narvaez C, Sun B, Lancaster E, Pershad V, Trzaska S, Véliz E, Kamei M, Prendergast A, Kidd KR, Shaw KM, Castranova DA, Pham VN, Lo BD, Martin BL, Raible DW, Weinstein BM, Torres-Vázquez J. Reck enables cerebrovascular development by promoting canonical Wnt signaling. Development 2015; 143:147-59. [PMID: 26657775 DOI: 10.1242/dev.123059] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 11/25/2015] [Indexed: 01/03/2023]
Abstract
The cerebral vasculature provides the massive blood supply that the brain needs to grow and survive. By acquiring distinctive cellular and molecular characteristics it becomes the blood-brain barrier (BBB), a selectively permeable and protective interface between the brain and the peripheral circulation that maintains the extracellular milieu permissive for neuronal activity. Accordingly, there is great interest in uncovering the mechanisms that modulate the formation and differentiation of the brain vasculature. By performing a forward genetic screen in zebrafish we isolated no food for thought (nft (y72)), a recessive late-lethal mutant that lacks most of the intracerebral central arteries (CtAs), but not other brain blood vessels. We found that the cerebral vascularization deficit of nft (y72) mutants is caused by an inactivating lesion in reversion-inducing cysteine-rich protein with Kazal motifs [reck; also known as suppressor of tumorigenicity 15 protein (ST15)], which encodes a membrane-anchored tumor suppressor glycoprotein. Our findings highlight Reck as a novel and pivotal modulator of the canonical Wnt signaling pathway that acts in endothelial cells to enable intracerebral vascularization and proper expression of molecular markers associated with BBB formation. Additional studies with cultured endothelial cells suggest that, in other contexts, Reck impacts vascular biology via the vascular endothelial growth factor (VEGF) cascade. Together, our findings have broad implications for both vascular and cancer biology.
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Affiliation(s)
- Florian Ulrich
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Jorge Carretero-Ortega
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Javier Menéndez
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Carlos Narvaez
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Belinda Sun
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Eva Lancaster
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Valerie Pershad
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Sean Trzaska
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Evelyn Véliz
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
| | - Makoto Kamei
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Andrew Prendergast
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Kameha R Kidd
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kenna M Shaw
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Daniel A Castranova
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Van N Pham
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brigid D Lo
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - David W Raible
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Brant M Weinstein
- Program in Genomics of Differentiation, The Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jesús Torres-Vázquez
- Dept of Cell Biology, Skirball Institute of Biomolecular Medicine, NYU Langone Medical Center, 540 First Avenue, New York, NY 10016, USA
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40
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Hill EM, Petersen CP. Wnt/Notum spatial feedback inhibition controls neoblast differentiation to regulate reversible growth of the planarian brain. Development 2015; 142:4217-29. [PMID: 26525673 DOI: 10.1242/dev.123612] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 10/27/2015] [Indexed: 12/20/2022]
Abstract
Mechanisms determining final organ size are poorly understood. Animals undergoing regeneration or ongoing adult growth are likely to require sustained and robust mechanisms to achieve and maintain appropriate sizes. Planarians, well known for their ability to undergo whole-body regeneration using pluripotent adult stem cells of the neoblast population, can reversibly scale body size over an order of magnitude by controlling cell number. Using quantitative analysis, we showed that after injury planarians perfectly restored brain:body proportion by increasing brain cell number through epimorphosis or decreasing brain cell number through tissue remodeling (morphallaxis), as appropriate. We identified a pathway controlling a brain size set-point that involves feedback inhibition between wnt11-6/wntA/wnt4a and notum, encoding conserved antagonistic signaling factors expressed at opposite brain poles. wnt11-6/wntA/wnt4a undergoes feedback inhibition through canonical Wnt signaling but is likely to regulate brain size in a non-canonical pathway independently of beta-catenin-1 and APC. Wnt/Notum signaling tunes numbers of differentiated brain cells in regenerative growth and tissue remodeling by influencing the abundance of brain progenitors descended from pluripotent stem cells, as opposed to regulating cell death. These results suggest that the attainment of final organ size might be accomplished by achieving a balance of positional signaling inputs that regulate the rates of tissue production.
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Affiliation(s)
- Eric M Hill
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA
| | - Christian P Petersen
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA Robert Lurie Comprehensive Cancer Center, Northwestern University, Evanston, IL 60208, USA
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41
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Agarwala S, Duquesne S, Liu K, Boehm A, Grimm L, Link S, König S, Eimer S, Ronneberger O, Lecaudey V. Amotl2a interacts with the Hippo effector Yap1 and the Wnt/β-catenin effector Lef1 to control tissue size in zebrafish. eLife 2015; 4:e08201. [PMID: 26335201 PMCID: PMC4596637 DOI: 10.7554/elife.08201] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 09/02/2015] [Indexed: 12/17/2022] Open
Abstract
During development, proliferation must be tightly controlled for organs to reach their appropriate size. While the Hippo signaling pathway plays a major role in organ growth control, how it senses and responds to increased cell density is still unclear. In this study, we use the zebrafish lateral line primordium (LLP), a group of migrating epithelial cells that form sensory organs, to understand how tissue growth is controlled during organ formation. Loss of the cell junction-associated Motin protein Amotl2a leads to overproliferation and bigger LLP, affecting the final pattern of sensory organs. Amotl2a function in the LLP is mediated together by the Hippo pathway effector Yap1 and the Wnt/β-catenin effector Lef1. Our results implicate for the first time the Hippo pathway in size regulation in the LL system. We further provide evidence that the Hippo/Motin interaction is essential to limit tissue size during development. DOI:http://dx.doi.org/10.7554/eLife.08201.001 How do organs and tissues know when to stop growing? A cell communication pathway known as Hippo signaling plays a central role as it can tell cells to stop dividing. It is activated when cells in developing tissues come into contact with each other and causes a protein called Yap1 to be modified, which prevents it from entering the cell nucleus to activate genes that are involved in cell division. In a zebrafish embryo, an organ called the lateral line forms from a cluster of cells that migrate along the embryo's length. At regular intervals, the cluster deposits small bunches of cells from its trailing end. The resulting loss of cells from the cluster is balanced by cell division at the front of the cluster, which is triggered by another signaling pathway called Wnt signaling. A protein of the ‘Motin’ family called Amotl2a is present in this migrating cluster. Motin proteins form junctions between cells and inhibit the activity of Yap1, but it is not known whether they are involved in regulating the size of organs. Here, Agarwala et al. used the lateral line as a model to study the control of organ size in zebrafish embryos. The experiments show that when Amotl2a is absent, the migrating cell cluster becomes larger, with the highest levels of cell division occurring at its trailing end. Yap1 and a protein involved in Wnt signaling called Lef1 are also present in the cluster and are required for it to be normal in size. In zebrafish that lack Amotl2a, the additional loss of Yap1 prevents this cluster from becoming too large. From these and other results, it appears that Amotl2a regulates the size of the lateral line cell cluster by restricting the ability of Yap1 and Lef1 to promote cell division. Agarwala et al.'s findings demonstrate a role for Amotl2a in controlling the size of organs. A future challenge is to understand the details of how it restricts the activities of Yap1 and Lef1. DOI:http://dx.doi.org/10.7554/eLife.08201.002
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Affiliation(s)
- Sobhika Agarwala
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,Developmental Biology, Institute for Biology I, Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Sandra Duquesne
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,Developmental Biology, Institute for Biology I, Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Kun Liu
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,Image Analysis Lab, Institute for Computer Science, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Anton Boehm
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,Image Analysis Lab, Institute for Computer Science, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Lin Grimm
- Developmental Biology, Institute for Biology I, Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Sandra Link
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,Developmental Biology, Institute for Biology I, Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Sabine König
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Stefan Eimer
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,ZBSA Center for Biological Systems Analysis, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Olaf Ronneberger
- BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany.,Image Analysis Lab, Institute for Computer Science, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
| | - Virginie Lecaudey
- Developmental Biology, Institute for Biology I, Faculty of Biology, Albert Ludwigs University of Freiburg, Freiburg im Breisgau, Germany
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42
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Romero-Carvajal A, Navajas Acedo J, Jiang L, Kozlovskaja-Gumbrienė A, Alexander R, Li H, Piotrowski T. Regeneration of Sensory Hair Cells Requires Localized Interactions between the Notch and Wnt Pathways. Dev Cell 2015; 34:267-82. [PMID: 26190147 DOI: 10.1016/j.devcel.2015.05.025] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/30/2015] [Accepted: 05/29/2015] [Indexed: 02/06/2023]
Abstract
In vertebrates, mechano-electrical transduction of sound is accomplished by sensory hair cells. Whereas mammalian hair cells are not replaced when lost, in fish they constantly renew and regenerate after injury. In vivo tracking and cell fate analyses of all dividing cells during lateral line hair cell regeneration revealed that support and hair cell progenitors localize to distinct tissue compartments. Importantly, we find that the balance between self-renewal and differentiation in these compartments is controlled by spatially restricted Notch signaling and its inhibition of Wnt-induced proliferation. The ability to simultaneously study and manipulate individual cell behaviors and multiple pathways in vivo transforms the lateral line into a powerful paradigm to mechanistically dissect sensory organ regeneration. The striking similarities to other vertebrate stem cell compartments uniquely place zebrafish to help elucidate why mammals possess such low capacity to regenerate hair cells.
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Affiliation(s)
- Andrés Romero-Carvajal
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA; Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT 84132, USA
| | | | - Linjia Jiang
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | | | | | - Hua Li
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA
| | - Tatjana Piotrowski
- Stowers Institute for Medical Research, Kansas City, MO 64110, USA; Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT 84132, USA.
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43
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Monroe JD, Rajadinakaran G, Smith ME. Sensory hair cell death and regeneration in fishes. Front Cell Neurosci 2015; 9:131. [PMID: 25954154 PMCID: PMC4404912 DOI: 10.3389/fncel.2015.00131] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 03/21/2015] [Indexed: 01/31/2023] Open
Abstract
Sensory hair cells are specialized mechanotransductive receptors required for hearing and vestibular function. Loss of hair cells in humans and other mammals is permanent and causes reduced hearing and balance. In the early 1980’s, it was shown that hair cells continue to be added to the inner ear sensory epithelia in cartilaginous and bony fishes. Soon thereafter, hair cell regeneration was documented in the chick cochlea following acoustic trauma. Since then, research using chick and other avian models has led to great insights into hair cell death and regeneration. However, with the rise of the zebrafish as a model organism for studying disease and developmental processes, there has been an increased interest in studying sensory hair cell death and regeneration in its lateral line and inner ears. Advances derived from studies in zebrafish and other fish species include understanding the effect of ototoxins on hair cells and finding otoprotectants to mitigate ototoxin damage, the role of cellular proliferation vs. direct transdifferentiation during hair cell regeneration, and elucidating cellular pathways involved in the regeneration process. This review will summarize research on hair cell death and regeneration using fish models, indicate the potential strengths and weaknesses of these models, and discuss several emerging areas of future studies.
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Affiliation(s)
- Jerry D Monroe
- Department of Biology, Western Kentucky University Bowling Green, KY, USA
| | - Gopinath Rajadinakaran
- Department of Genetics and Genome Sciences, University of Connecticut Health Center Farmington, CT, USA
| | - Michael E Smith
- Department of Biology, Western Kentucky University Bowling Green, KY, USA
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44
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Cruz IA, Kappedal R, Mackenzie SM, Hailey DW, Hoffman TL, Schilling TF, Raible DW. Robust regeneration of adult zebrafish lateral line hair cells reflects continued precursor pool maintenance. Dev Biol 2015; 402:229-38. [PMID: 25869855 DOI: 10.1016/j.ydbio.2015.03.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/03/2015] [Accepted: 03/27/2015] [Indexed: 01/08/2023]
Abstract
We have examined lateral line hair cell and support cell maintenance in adult zebrafish when growth is largely complete. We demonstrate that adult zebrafish not only replenish hair cells after a single instance of hair cell damage, but also maintain hair cells and support cells after multiple rounds of damage and regeneration. We find that hair cells undergo continuous turnover in adult zebrafish in the absence of damage. We identify mitotically-distinct support cell populations and show that hair cells regenerate from underlying support cells in a region-specific manner. Our results demonstrate that there are two distinct support cell populations in the lateral line, which may help explain why zebrafish hair cell regeneration is extremely robust, retained throughout life, and potentially unlimited in regenerative capacity.
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Affiliation(s)
- Ivan A Cruz
- Molecular Cellular Biology Graduate Program, University of Washington, Seattle, WA 98195, USA; Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Ryan Kappedal
- Department of Statistics, University of Washington, Seattle, WA 98195, USA
| | - Scott M Mackenzie
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA; Neurobiology and Behavior Graduate Program, University of Washington, Seattle, WA 98195, USA
| | - Dale W Hailey
- Department of Biological Structure, University of Washington, Seattle, WA 98195, USA
| | - Trevor L Hoffman
- Department of Developmental and Cell Biology, University of California, Irvine, CA 92697-2300, USA; Kaiser Permanente, 5971 Venice Boulevard, West Los Angeles, CA 90034, USA
| | - Thomas F Schilling
- Department of Developmental and Cell Biology, University of California, Irvine, CA 92697-2300, USA
| | - David W Raible
- Molecular Cellular Biology Graduate Program, University of Washington, Seattle, WA 98195, USA; Department of Biological Structure, University of Washington, Seattle, WA 98195, USA; Neurobiology and Behavior Graduate Program, University of Washington, Seattle, WA 98195, USA.
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45
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Size control during organogenesis: Development of the lateral line organs in zebrafish. Dev Growth Differ 2015; 57:169-78. [DOI: 10.1111/dgd.12196] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/18/2014] [Accepted: 12/18/2014] [Indexed: 12/30/2022]
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46
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Hayashi L, Sheth M, Young A, Kruger M, Wayman GA, Coffin AB. The effect of the aquatic contaminants bisphenol-A and PCB-95 on the zebrafish lateral line. Neurotoxicology 2014; 46:125-36. [PMID: 25556122 DOI: 10.1016/j.neuro.2014.12.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 12/18/2014] [Accepted: 12/22/2014] [Indexed: 01/18/2023]
Abstract
Environmental toxicants such as bisphenol-A (BPA) and polychlorinated biphenyls (PCBs) are prevalent in our water supply, soil, and many food products and can profoundly affect the central nervous system. Both BPA and PCBs can disrupt endocrine signaling, which is important for auditory development and function, but the effect of these toxicants on the auditory periphery is not understood. In this study we investigated the effect of PCB-95 and BPA on lateral line development, function, and regeneration in larval zebrafish. The lateral line is a system of mechanosensory hair cells on the exterior of the fish that are homologous to the hair cells located in the mammalian inner ear. We found that PCB-95 had no effect on lateral line development or hair cell survival. BPA also did not affect lateral line development, but instead had a significant effect on both hair cell survival and regeneration. BPA-induced hair cell loss is both dose- and time-dependent, with concentrations of 1 μM or higher killing lateral line hair cells during a 24h exposure period. Pharmacologic manipulation experiments suggest that BPA kills hair cells via activation of oxidative stress pathways, similar to prior reports of BPA toxicity in other tissues. We also observed that hair cells killed with neomycin, a known ototoxin, failed to regenerate normally when BPA was present, suggesting that BPA in aquatic environments could impede innate regenerative responses in fishes. Collectively, these data demonstrate that BPA can have detrimental effects on sensory systems, both in aquatic life and perhaps in terrestrial organisms, including humans.
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Affiliation(s)
- Lauren Hayashi
- College of Arts and Sciences, Washington State University, Vancouver, WA, USA.
| | - Meghal Sheth
- College of Arts and Sciences, Washington State University, Vancouver, WA, USA.
| | - Alexander Young
- College of Arts and Sciences, Washington State University, Vancouver, WA, USA.
| | - Matthew Kruger
- College of Arts and Sciences, Washington State University, Vancouver, WA, USA.
| | - Gary A Wayman
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA, USA.
| | - Allison B Coffin
- College of Arts and Sciences, Washington State University, Vancouver, WA, USA; Department of Integrative Physiology and Neuroscience, Washington State University, Vancouver, WA, USA.
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47
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Thomas ED, Cruz IA, Hailey DW, Raible DW. There and back again: development and regeneration of the zebrafish lateral line system. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2014; 4:1-16. [PMID: 25330982 DOI: 10.1002/wdev.160] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/10/2014] [Accepted: 08/24/2014] [Indexed: 12/23/2022]
Abstract
The zebrafish lateral line is a sensory system used to detect changes in water flow. It is comprised of clusters of mechanosensory hair cells called neuromasts. The lateral line is initially established by a migratory group of cells, called a primordium, that deposits neuromasts at stereotyped locations along the surface of the fish. Wnt, FGF, and Notch signaling are all important regulators of various aspects of lateral line development, from primordium migration to hair cell specification. As zebrafish age, the organization of the lateral line becomes more complex in order to accommodate the fish's increased size. This expansion is regulated by many of the same factors involved in the initial development. Furthermore, unlike mammalian hair cells, lateral line hair cells have the capacity to regenerate after damage. New hair cells arise from the proliferation and differentiation of surrounding support cells, and the molecular and cellular pathways regulating this are beginning to be elucidated. All in all, the zebrafish lateral line has proven to be an excellent model in which to study a diverse array of processes, including collective cell migration, cell polarity, cell fate, and regeneration.
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Affiliation(s)
- Eric D Thomas
- Graduate Program in Neurobiology and Behavior, University of Washington, Seattle, WA, USA; Department of Biological Structure, University of Washington, Seattle, WA, USA
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48
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Huysseune A, Soenens M, Elderweirdt F. Wnt signaling during tooth replacement in zebrafish (Danio rerio): pitfalls and perspectives. Front Physiol 2014; 5:386. [PMID: 25339911 PMCID: PMC4186270 DOI: 10.3389/fphys.2014.00386] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 09/18/2014] [Indexed: 12/24/2022] Open
Abstract
The canonical (β-catenin dependent) Wnt signaling pathway has emerged as a likely candidate for regulating tooth replacement in continuously renewing dentitions. So far, the involvement of canonical Wnt signaling has been experimentally demonstrated predominantly in amniotes. These studies tend to show stimulation of tooth formation by activation of the Wnt pathway, and inhibition of tooth formation when blocking the pathway. Here, we report a strong and dynamic expression of the soluble Wnt inhibitor dickkopf1 (dkk1) in developing zebrafish (Danio rerio) tooth germs, suggesting an active repression of Wnt signaling during morphogenesis and cytodifferentiation of a tooth, and derepression of Wnt signaling during start of replacement tooth formation. To further analyse the role of Wnt signaling, we used different gain-of-function approaches. These yielded disjunct results, yet none of them indicating enhanced tooth replacement. Thus, masterblind (mbl) mutants, defective in axin1, mimic overexpression of Wnt, but display a normally patterned dentition in which teeth are replaced at the appropriate times and positions. Activating the pathway with LiCl had variable outcomes, either resulting in the absence, or the delayed formation, of first-generation teeth, or yielding a regular dentition with normal replacement, but no supernumerary teeth or accelerated tooth replacement. The failure so far to influence tooth replacement in the zebrafish by perturbing Wnt signaling is discussed in the light of (i) potential technical pitfalls related to dose- or time-dependency, (ii) the complexity of the canonical Wnt pathway, and (iii) species-specific differences in the nature and activity of pathway components. Finally, we emphasize the importance of in-depth knowledge of the wild-type pattern for reliable interpretations. It is hoped that our analysis can be inspiring to critically assess and elucidate the role of Wnt signaling in tooth development in polyphyodonts.
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Affiliation(s)
- Ann Huysseune
- Evolutionary Developmental Biology Research Group, Biology Department, Ghent University Ghent, Belgium
| | - Mieke Soenens
- Evolutionary Developmental Biology Research Group, Biology Department, Ghent University Ghent, Belgium
| | - Fien Elderweirdt
- Evolutionary Developmental Biology Research Group, Biology Department, Ghent University Ghent, Belgium
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49
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Lush ME, Piotrowski T. Sensory hair cell regeneration in the zebrafish lateral line. Dev Dyn 2014; 243:1187-202. [PMID: 25045019 DOI: 10.1002/dvdy.24167] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/12/2014] [Accepted: 07/14/2014] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Damage or destruction of sensory hair cells in the inner ear leads to hearing or balance deficits that can be debilitating, especially in older adults. Unfortunately, the damage is permanent, as regeneration of the inner ear sensory epithelia does not occur in mammals. RESULTS Zebrafish and other non-mammalian vertebrates have the remarkable ability to regenerate sensory hair cells and understanding the molecular and cellular basis for this regenerative ability will hopefully aid us in designing therapies to induce regeneration in mammals. Zebrafish not only possess hair cells in the ear but also in the sensory lateral line system. Hair cells in both organs are functionally analogous to hair cells in the inner ear of mammals. The lateral line is a mechanosensory system found in most aquatic vertebrates that detects water motion and aids in predator avoidance, prey capture, schooling, and mating. Although hair cell regeneration occurs in both the ear and lateral line, most research to date has focused on the lateral line due to its relatively simple structure and accessibility. CONCLUSIONS Here we review the recent discoveries made during the characterization of hair cell regeneration in zebrafish.
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Affiliation(s)
- Mark E Lush
- Stowers Institute for Medical Research, Kansas City, Missouri
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50
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McGraw HF, Culbertson MD, Nechiporuk AV. Kremen1 restricts Dkk activity during posterior lateral line development in zebrafish. Development 2014; 141:3212-21. [PMID: 25038040 DOI: 10.1242/dev.102541] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Canonical Wnt signaling plays crucial roles during development and disease. How Wnt signaling is modulated in different in vivo contexts is currently not well understood. Here, we investigate the modulation of Wnt signaling in the posterior lateral line primordium (pLLP), a cohort of ~100 cells that collectively migrate along the trunk of the zebrafish embryo. The pLLP comprises proliferative progenitor cells and organized epithelial cells that will form the mechanosensory organs of the posterior lateral line. Wnt signaling is active in the leading progenitor zone of the pLLP and restricted from the trailing zone through expression of the secreted Wnt inhibitors dkk1b and dkk2. We have identified a zebrafish strain, krm1(nl10), which carries a mutation in the kremen1 gene, a non-obligate co-receptor for the Dkk family of proteins. Previous studies have shown that Kremen1 inhibits Wnt signaling by facilitating internalization of the Kremen1-Dkk-Lrp5/6 complex. Surprisingly, we found that disruption of Kremen1 in the pLLP exhibited molecular and cellular phenotypes associated with a decrease rather than overactivation of Wnt signaling. Transplantation of wild-type cells into the mutant primordia failed to rescue the krm1(nl10) phenotype, thus revealing that the effects of Kremen1 loss are non-cell-autonomous. Finally, ectopic expression of Dkk1b-mTangerine protein revealed larger spread of the fusion protein in the mutant primordia compared with the wild type. Based on our data, we propose a novel mechanism in which Kremen1 modulates Wnt activity by restricting the range of secreted Dkk proteins during collective cell migration in the pLLP.
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Affiliation(s)
- Hillary F McGraw
- Oregon Health & Science University, Department of Cell and Developmental Biology, Portland, OR 97239, USA
| | - Maya D Culbertson
- Oregon Health & Science University, Department of Cell and Developmental Biology, Portland, OR 97239, USA
| | - Alex V Nechiporuk
- Oregon Health & Science University, Department of Cell and Developmental Biology, Portland, OR 97239, USA
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