1
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Jeong I, Andreassen SN, Hoang L, Poulain M, Seo Y, Park HC, Fürthauer M, MacAulay N, Jurisch-Yaksi N. The evolutionarily conserved choroid plexus contributes to the homeostasis of brain ventricles in zebrafish. Cell Rep 2024; 43:114331. [PMID: 38843394 DOI: 10.1016/j.celrep.2024.114331] [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: 11/14/2023] [Revised: 04/24/2024] [Accepted: 05/22/2024] [Indexed: 07/02/2024] Open
Abstract
The choroid plexus (ChP) produces cerebrospinal fluid (CSF). It also contributes to brain development and serves as the CSF-blood barrier. Prior studies have identified transporters on the epithelial cells that transport water and ions from the blood vasculature to the ventricles and tight junctions involved in the CSF-blood barrier. Yet, how the ChP epithelial cells control brain physiology remains unresolved. We use zebrafish to provide insights into the physiological roles of the ChP. Upon histological and transcriptomic analyses, we identify that the zebrafish ChP is conserved with mammals and expresses transporters involved in CSF secretion. Next, we show that the ChP epithelial cells secrete proteins into CSF. By ablating the ChP epithelial cells, we identify a reduction of the ventricular sizes without alterations of the CSF-blood barrier. Altogether, our findings reveal that the zebrafish ChP is conserved and contributes to the size and homeostasis of the brain ventricles.
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Affiliation(s)
- Inyoung Jeong
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Erling Skjalgsons Gate 1, 7491 Trondheim, Norway
| | - Søren N Andreassen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark
| | - Linh Hoang
- Cellular and Molecular Imaging Core Facility (CMIC), Norwegian University of Science and Technology, Erling Skjalgsons Gate 1, 7491 Trondheim, Norway
| | - Morgane Poulain
- Université Côte d'Azur, CNRS, Inserm, iBV, 28 Avenue Valrose, 06108 Nice cedex 2, France
| | - Yongbo Seo
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Republic of Korea
| | - Hae-Chul Park
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Republic of Korea
| | - Maximilian Fürthauer
- Université Côte d'Azur, CNRS, Inserm, iBV, 28 Avenue Valrose, 06108 Nice cedex 2, France
| | - Nanna MacAulay
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark
| | - Nathalie Jurisch-Yaksi
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Erling Skjalgsons Gate 1, 7491 Trondheim, Norway.
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2
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Brehm N, Wenke N, Glessner K, Haehnel-Taguchi M. Physiological responses of mechanosensory systems in the head of larval zebrafish ( Danio rerio). Front Robot AI 2023; 10:1212626. [PMID: 37583713 PMCID: PMC10423815 DOI: 10.3389/frobt.2023.1212626] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 07/11/2023] [Indexed: 08/17/2023] Open
Abstract
The lateral line system of zebrafish consists of the anterior lateral line, with neuromasts distributed on the head, and the posterior lateral line, with neuromasts distributed on the trunk. The sensory afferent neurons are contained in the anterior and posterior lateral line ganglia, respectively. So far, the vast majority of physiological and developmental studies have focused on the posterior lateral line. However, studies that focus on the anterior lateral line, especially on its physiology, are very rare. The anterior lateral line involves different neuromast patterning processes, specific distribution of synapses, and a unique role in behavior. Here, we report our observations regarding the development of the lateral line and analyze the physiological responses of the anterior lateral line to mechanical and water jet stimuli. Sensing in the fish head may be crucial to avoid obstacles, catch prey, and orient in water current, especially in the absence of visual cues. Alongside the lateral line, the trigeminal system, with its fine nerve endings innervating the skin, could contribute to perceiving mechanosensory stimulation. Therefore, we compare the physiological responses of the lateral line afferent neurons to responses of trigeminal neurons and responsiveness of auditory neurons. We show that anterior lateral line neurons are tuned to the velocity of mechanosensory ramp stimulation, while trigeminal neurons either only respond to mechanical step stimuli or fast ramp and step stimuli. Auditory neurons did not respond to mechanical or water jet stimuli. These results may prove to be essential in designing underwater robots and artificial lateral lines, with respect to the spectra of stimuli that the different mechanosensory systems in the larval head are tuned to, and underline the importance and functionality of the anterior lateral line system in the larval fish head.
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Affiliation(s)
- Nils Brehm
- Department of Developmental Biology, Institute for Biology 1, University of Freiburg, Freiburg, Germany
| | | | | | - Melanie Haehnel-Taguchi
- Department of Developmental Biology, Institute for Biology 1, University of Freiburg, Freiburg, Germany
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3
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D'Amora M, Galgani A, Marchese M, Tantussi F, Faraguna U, De Angelis F, Giorgi FS. Zebrafish as an Innovative Tool for Epilepsy Modeling: State of the Art and Potential Future Directions. Int J Mol Sci 2023; 24:ijms24097702. [PMID: 37175408 PMCID: PMC10177843 DOI: 10.3390/ijms24097702] [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: 04/06/2023] [Revised: 04/20/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
This article discusses the potential of Zebrafish (ZF) (Danio Rerio), as a model for epilepsy research. Epilepsy is a neurological disorder affecting both children and adults, and many aspects of this disease are still poorly understood. In vivo and in vitro models derived from rodents are the most widely used for studying both epilepsy pathophysiology and novel drug treatments. However, researchers have recently obtained several valuable insights into these two fields of investigation by studying ZF. Despite the relatively simple brain structure of these animals, researchers can collect large amounts of data in a much shorter period and at lower costs compared to classical rodent models. This is particularly useful when a large number of candidate antiseizure drugs need to be screened, and ethical issues are minimized. In ZF, seizures have been induced through a variety of chemoconvulsants, primarily pentylenetetrazol (PTZ), kainic acid (KA), and pilocarpine. Furthermore, ZF can be easily genetically modified to test specific aspects of monogenic forms of human epilepsy, as well as to discover potential convulsive phenotypes in monogenic mutants. The article reports on the state-of-the-art and potential new fields of application of ZF research, including its potential role in revealing epileptogenic mechanisms, rather than merely assessing iatrogenic acute seizure modulation.
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Affiliation(s)
- Marta D'Amora
- Istituto Italiano di Tecnologia, 16163 Genova, Italy
- Department of Biology, University of Pisa, 56125 Pisa, Italy
| | - Alessandro Galgani
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 56126 Pisa, Italy
| | - Maria Marchese
- Molecular Medicine and Neurobiology-ZebraLab, IRCCS Fondazione Stella Maris, 56128 Pisa, Italy
| | | | - Ugo Faraguna
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 56126 Pisa, Italy
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, 56128 Pisa, Italy
| | | | - Filippo Sean Giorgi
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 56126 Pisa, Italy
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4
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Lucon-Xiccato T, Tomain M, D’Aniello S, Bertolucci C. bdnf loss affects activity, sociability, and anxiety-like behaviour in zebrafish. Behav Brain Res 2023; 436:114115. [DOI: 10.1016/j.bbr.2022.114115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 08/18/2022] [Accepted: 09/11/2022] [Indexed: 10/14/2022]
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5
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Folgueira M, Miyasaka N. Editorial: Teleostean forebrain organization and evolution: Links to behavior and ecological niche. Front Neuroanat 2023; 17:1167451. [PMID: 36960035 PMCID: PMC10030053 DOI: 10.3389/fnana.2023.1167451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 03/09/2023] Open
Affiliation(s)
- Mónica Folgueira
- Grupo Neurover, Centro Interdisciplinar Bioloxía e Química (CICA), Universidade da Coruña, A Coruña, Spain
- Grupo Neurover, Departamento Bioloxía, Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
- *Correspondence: Mónica Folgueira
| | - Nobuhiko Miyasaka
- Laboratory for Systems Molecular Ethology, RIKEN Center for Brain Science, Saitama, Japan
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6
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Özsoy Ç, Hotz AL, Rieser NN, Chen Z, Deán-Ben XL, Neuhauss SCF, Razansky D. Volumetric optoacoustic neurobehavioral tracking of epileptic seizures in freely-swimming zebrafish larvae. Front Mol Neurosci 2022; 15:1004518. [PMID: 36176960 PMCID: PMC9514119 DOI: 10.3389/fnmol.2022.1004518] [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: 07/27/2022] [Accepted: 08/15/2022] [Indexed: 11/25/2022] Open
Abstract
Fast three-dimensional imaging of freely-swimming zebrafish is essential to understand the link between neuronal activity and behavioral changes during epileptic seizures. Studying the complex spatiotemporal patterns of neuronal activity at the whole-brain or -body level typically requires physical restraint, thus hindering the observation of unperturbed behavior. Here we report on real-time volumetric optoacoustic imaging of aberrant circular swimming activity and calcium transients in freely behaving zebrafish larvae, continuously covering their motion across an entire three-dimensional region. The high spatiotemporal resolution of the technique enables capturing ictal-like epileptic seizure events and quantifying their propagation speed, independently validated with simultaneous widefield fluorescence recordings. The work sets the stage for discerning functional interconnections between zebrafish behavior and neuronal activity for studying fundamental mechanisms of epilepsy and in vivo validation of treatment strategies.
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Affiliation(s)
- Çağla Özsoy
- Faculty of Medicine, Institute of Pharmacology and Toxicology and Institute for Biomedical Engineering, University of Zurich, Zurich, Switzerland
- Department of Information Technology and Electrical Engineering, Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
| | - Adriana L. Hotz
- Department of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Nicolas N. Rieser
- Department of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Zhenyue Chen
- Faculty of Medicine, Institute of Pharmacology and Toxicology and Institute for Biomedical Engineering, University of Zurich, Zurich, Switzerland
- Department of Information Technology and Electrical Engineering, Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
| | - Xosé Luís Deán-Ben
- Faculty of Medicine, Institute of Pharmacology and Toxicology and Institute for Biomedical Engineering, University of Zurich, Zurich, Switzerland
- Department of Information Technology and Electrical Engineering, Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
| | | | - Daniel Razansky
- Faculty of Medicine, Institute of Pharmacology and Toxicology and Institute for Biomedical Engineering, University of Zurich, Zurich, Switzerland
- Department of Information Technology and Electrical Engineering, Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
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7
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Alba-González A, Yáñez J, Anadón R, Folgueira M. Neurogranin-like immunoreactivity in the zebrafish brain during development. Brain Struct Funct 2022; 227:2593-2607. [PMID: 36018391 PMCID: PMC9618489 DOI: 10.1007/s00429-022-02550-6] [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: 05/10/2022] [Accepted: 08/03/2022] [Indexed: 11/30/2022]
Abstract
Neurogranin (Nrgn) is a neural protein that is enriched in the cerebral cortex and is involved in synaptic plasticity via its interaction with calmodulin. Recently we reported its expression in the brain of the adult zebrafish (Alba-González et al. J Comp Neurol 530:1569–1587, 2022). In this study we analyze the development of Nrgn-like immunoreactivity (Nrgn-like-ir) in the brain and sensory structures of zebrafish embryos and larvae, using whole mounts and sections. First Nrgn-like positive neurons appeared by 2 day post-fertilization (dpf) in restricted areas of the brain, mostly in the pallium, epiphysis and hindbrain. Nrgn-like populations increased noticeably by 3 dpf, reaching an adult-like pattern in 6 dpf. Most Nrgn-like positive neurons were observed in the olfactory organ, retina (most ganglion cells, some amacrine and bipolar cells), pallium, lateral hypothalamus, thalamus, optic tectum, torus semicircularis, octavolateralis area, and viscerosensory column. Immunoreactivity was also observed in axonal tracts originating in Nrgn-like neuronal populations, namely, the projection of Nrgn-like immunopositive primary olfactory fibers to olfactory glomeruli, that of Nrgn-like positive pallial cells to the hypothalamus, the Nrgn-like-ir optic nerve to the pretectum and optic tectum, the Nrgn-like immunolabeled lateral hypothalamus to the contralateral region via the horizontal commissure, the octavolateralis area to the midbrain via the lateral lemniscus, and the viscerosensory column to the dorsal isthmus via the secondary gustatory tract. The late expression of Nrgn in zebrafish neurons is probably related to functional maturation of higher brain centers, as reported in the mammalian telencephalon. The analysis of Nrgn expression in the zebrafish brain suggests that it may be a useful marker for specific neuronal circuitries.
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Affiliation(s)
- Anabel Alba-González
- Department of Biology, Faculty of Sciences, University of A Coruña, Campus da Zapateira, 15008-A, Coruña, Spain.,Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, 15071-A, Coruña, Spain
| | - Julián Yáñez
- Department of Biology, Faculty of Sciences, University of A Coruña, Campus da Zapateira, 15008-A, Coruña, Spain. .,Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, 15071-A, Coruña, Spain.
| | - Ramón Anadón
- Department of Functional Biology, Faculty of Biology, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Mónica Folgueira
- Department of Biology, Faculty of Sciences, University of A Coruña, Campus da Zapateira, 15008-A, Coruña, Spain. .,Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, 15071-A, Coruña, Spain.
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8
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Laschke MW, Gu Y, Menger MD. Replacement in angiogenesis research: Studying mechanisms of blood vessel development by animal-free in vitro, in vivo and in silico approaches. Front Physiol 2022; 13:981161. [PMID: 36060683 PMCID: PMC9428454 DOI: 10.3389/fphys.2022.981161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/21/2022] [Indexed: 01/10/2023] Open
Abstract
Angiogenesis, the development of new blood vessels from pre-existing ones, is an essential process determining numerous physiological and pathological conditions. Accordingly, there is a high demand for research approaches allowing the investigation of angiogenic mechanisms and the assessment of pro- and anti-angiogenic therapeutics. The present review provides a selective overview and critical discussion of such approaches, which, in line with the 3R principle, all share the common feature that they are not based on animal experiments. They include in vitro assays to study the viability, proliferation, migration, tube formation and sprouting activity of endothelial cells in two- and three-dimensional environments, the degradation of extracellular matrix compounds as well as the impact of hemodynamic forces on blood vessel formation. These assays can be complemented by in vivo analyses of microvascular network formation in the chorioallantoic membrane assay and early stages of zebrafish larvae. In addition, the combination of experimental data and physical laws enables the mathematical modeling of tissue-specific vascularization, blood flow patterns, interstitial fluid flow as well as oxygen, nutrient and drug distribution. All these animal-free approaches markedly contribute to an improved understanding of fundamental biological mechanisms underlying angiogenesis. Hence, they do not only represent essential tools in basic science but also in early stages of drug development. Moreover, their advancement bears the great potential to analyze angiogenesis in all its complexity and, thus, to make animal experiments superfluous in the future.
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9
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Baldin SL, de Pieri Pickler K, de Farias ACS, Bernardo HT, Scussel R, da Costa Pereira B, Pacheco SD, Dondossola ER, Machado-de-Ávila RA, Wanderley AG, Rico EP. Gallic acid modulates purine metabolism and oxidative stress induced by ethanol exposure in zebrafish brain. Purinergic Signal 2022; 18:307-315. [PMID: 35687211 DOI: 10.1007/s11302-022-09869-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 05/09/2022] [Indexed: 10/18/2022] Open
Abstract
Gallic acid (GA) is a secondary metabolite found in plants. It has the ability to cross the blood-brain barrier and, through scavenging properties, has a protective effect in a brain insult model. Alcohol metabolism generates reactive oxygen species (ROS); thus, alcohol abuse has a deleterious effect on the brain. The zebrafish is a vertebrate often used for screening toxic substances and in acute ethanol exposure models. The aim of this study was to evaluate whether GA pretreatment (24 h) prevents the changes induced by acute ethanol exposure (1 h) in the purinergic signaling pathway in the zebrafish brain via degradation of extracellular nucleotides and oxidative stress. The nucleotide cascade promoted by the nucleoside triphosphate diphosphohydrolase (NTPDase) and 5'-nucleotidase was assessed by quantifying nucleotide metabolism. The effect of GA alone at 5 and 10 mg L-1 did not change the nucleotide levels. Pretreatment with 10 mg L-1 GA prevented an ethanol-induced increase in ATP and ADP levels. No significant difference was found between the AMP levels of the two pretreatment groups. Pretreatment with 10 mg L-1 GA prevented ethanol-enhanced lipid peroxidation and dichlorodihydrofluorescein (DCFH) levels. The higher GA concentration was also shown to positively modulate against ethanol-induced effects on superoxide dismutase (SOD), but not on catalase (CAT). This study demonstrated that GA prevents the inhibitory effect of ethanol on NTPDase activity and oxidative stress parameters, thus consequently modulating nucleotide levels that may contribute to the possible protective effects induced by alcohol and purinergic signaling.
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Affiliation(s)
- Samira Leila Baldin
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Karolyne de Pieri Pickler
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Ana Caroline Salvador de Farias
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Henrique Teza Bernardo
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Rahisa Scussel
- Experimental Physiology Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Bárbara da Costa Pereira
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Suzielen Damin Pacheco
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Eduardo Ronconi Dondossola
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Ricardo Andrez Machado-de-Ávila
- Experimental Physiology Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil
| | - Almir Gonçalves Wanderley
- Department of Pharmaceutical Sciences, Federal University of Pernambuco (UFPE), Recife, PE, Brazil.,Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, PE, Brazil
| | - Eduardo Pacheco Rico
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciuma, SC, Brazil. .,Laboratory of Translational Biomedicine Laboratory, University of Southern Santa Catarina (UNESC), Criciuma, Santa Catarina, Brazil.
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10
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Turrini L, Sorelli M, de Vito G, Credi C, Tiso N, Vanzi F, Pavone FS. Multimodal Characterization of Seizures in Zebrafish Larvae. Biomedicines 2022; 10:951. [PMID: 35625689 PMCID: PMC9139036 DOI: 10.3390/biomedicines10050951] [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: 03/07/2022] [Revised: 04/07/2022] [Accepted: 04/15/2022] [Indexed: 11/17/2022] Open
Abstract
Epilepsy accounts for a significant proportion of the world's disease burden. Indeed, many research efforts are produced both to investigate the basic mechanism ruling its genesis and to find more effective therapies. In this framework, the use of zebrafish larvae, owing to their peculiar features, offers a great opportunity. Here, we employ transgenic zebrafish larvae expressing GCaMP6s in all neurons to characterize functional alterations occurring during seizures induced by pentylenetetrazole. Using a custom two-photon light-sheet microscope, we perform fast volumetric functional imaging of the entire larval brain, investigating how different brain regions contribute to seizure onset and propagation. Moreover, employing a custom behavioral tracking system, we outline the progressive alteration of larval swim kinematics, resulting from different grades of seizures. Collectively, our results show that the epileptic larval brain undergoes transitions between diverse neuronal activity regimes. Moreover, we observe that different brain regions are progressively recruited into the generation of seizures of diverse severity. We demonstrate that midbrain regions exhibit highest susceptibility to the convulsant effects and that, during periods preceding abrupt hypersynchronous paroxysmal activity, they show a consistent increase in functional connectivity. These aspects, coupled with the hub-like role that these regions exert, represent important cues in their identification as epileptogenic hubs.
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Affiliation(s)
- Lapo Turrini
- Department of Physics and Astronomy, University of Florence, Via G. Sansone 1, 50019 Sesto Fiorentino, Italy;
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy; (G.d.V.); (C.C.); (F.V.)
| | - Michele Sorelli
- Department of Physics and Astronomy, University of Florence, Via G. Sansone 1, 50019 Sesto Fiorentino, Italy;
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy; (G.d.V.); (C.C.); (F.V.)
| | - Giuseppe de Vito
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy; (G.d.V.); (C.C.); (F.V.)
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
| | - Caterina Credi
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy; (G.d.V.); (C.C.); (F.V.)
- National Institute of Optics, National Research Council, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
| | - Natascia Tiso
- Department of Biology, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy;
| | - Francesco Vanzi
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy; (G.d.V.); (C.C.); (F.V.)
- Department of Biology, University of Florence, Via Madonna del Piano 6, 50019 Sesto Fiorentino, Italy
| | - Francesco Saverio Pavone
- Department of Physics and Astronomy, University of Florence, Via G. Sansone 1, 50019 Sesto Fiorentino, Italy;
- European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy; (G.d.V.); (C.C.); (F.V.)
- National Institute of Optics, National Research Council, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
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11
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Sovrano VA, Vicidomini S, Potrich D, Miletto Petrazzini ME, Baratti G, Rosa-Salva O. Visual discrimination and amodal completion in zebrafish. PLoS One 2022; 17:e0264127. [PMID: 35235595 PMCID: PMC8890640 DOI: 10.1371/journal.pone.0264127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 02/03/2022] [Indexed: 01/16/2023] Open
Abstract
While zebrafish represent an important model for the study of the visual system, visual perception in this species is still less investigated than in other teleost fish. In this work, we validated for zebrafish two versions of a visual discrimination learning task, which is based on the motivation to reach food and companions. Using this task, we investigated zebrafish ability to discriminate between two different shape pairs (i.e., disk vs. cross and full vs. amputated disk). Once zebrafish were successfully trained to discriminate a full from an amputated disk, we also tested their ability to visually complete partially occluded objects (amodal completion). After training, animals were presented with two amputated disks. In these test stimuli, another shape was either exactly juxtaposed or only placed close to the missing sectors of the disk. Only the former stimulus should elicit amodal completion. In human observers, this stimulus causes the impression that the other shape is occluding the missing sector of the disk, which is thus perceived as a complete, although partially hidden, disk. In line with our predictions, fish reinforced on the full disk chose the stimulus eliciting amodal completion, while fish reinforced on the amputated disk chose the other stimulus. This represents the first demonstration of amodal completion perception in zebrafish. Moreover, our results also indicated that a specific shape pair (disk vs. cross) might be particularly difficult to discriminate for this species, confirming previous reports obtained with different procedures.
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Affiliation(s)
- Valeria Anna Sovrano
- Center for Mind/Brain Sciences, University of Trento, Rovereto, Italy
- Department of Psychology and Cognitive Science, University of Trento, Rovereto, Italy
- * E-mail: (VAS); (ORS)
| | | | - Davide Potrich
- Center for Mind/Brain Sciences, University of Trento, Rovereto, Italy
| | | | - Greta Baratti
- Center for Mind/Brain Sciences, University of Trento, Rovereto, Italy
| | - Orsola Rosa-Salva
- Center for Mind/Brain Sciences, University of Trento, Rovereto, Italy
- * E-mail: (VAS); (ORS)
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12
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Leite M, Tercya H, Nascimento BG, Rodrigues J, Santos R, Costa BPD, Nascimento WL, Luis ZG, Lima-Maximino M, Maximino C, Siqueira-Silva DH. Anesthesia or seizure-like behavior? The effects of two Amazonian plants, Acmella oleracea and Piper alatabaccum in zebrafish (Danio rerio). BRAZ J BIOL 2022; 82:e266010. [DOI: 10.1590/1519-6984.266010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 08/22/2022] [Indexed: 11/22/2022] Open
Abstract
Abstract Currently, available fish anesthetics can produce important side effects, including respiratory arrest and distress. Easy-to-implement alternatives with low toxicity are needed to ensure fish health as well as to help artisanal fisheries and fish sellers in handling and transporting fishes, and native plants seems to be the best alternative. We aimed to implement an anesthetic protocol using crude ethanolic extracts from flowers and leaves of two Amazonian plants, the Acmella oleracea and Piper alatabaccum. We first tested the extracts for anesthesia, using the zebrafish as model. Even though in some treatments the animals apparently entered deep anesthesia, many of them presented aberrant behaviors and even died. Thus, we performed new experiments testing the extracts effects on seizure-like behaviors of the fish. Only the leaf extract of A. oleracea has potential effects for fish anesthesia. Both the flower extract from this plant and the leaf extract from P. alatabaccum induced seizure-like behavior in the animals. In conclusion, besides bringing a possible new anesthetic protocol for fish, our work draws attention for the neurotoxic effects the anesthetic solutions may cause, since several studies defend other Piper species as anesthetic for fish and A. oleracea flowers’ extract was already pointed as fish anesthetic.
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Affiliation(s)
- M. Leite
- Universidade Federal do Sul e Sudeste do Pará, Brasil
| | - H. Tercya
- Universidade Federal do Sul e Sudeste do Pará, Brasil
| | | | - J. Rodrigues
- Universidade Federal do Sul e Sudeste do Pará, Brasil
| | - R. Santos
- Universidade Federal do Sul e Sudeste do Pará, Brasil
| | | | | | - Z. G. Luis
- Universidade Federal do Sul e Sudeste do Pará, Brasil
| | | | - C. Maximino
- Universidade Federal do Sul e Sudeste do Pará, Brasil
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13
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Lange M, Solak A, Vijay Kumar S, Kobayashi H, Yang B, Royer LA. ZAF, the first open source fully automated feeder for aquatic facilities. eLife 2021; 10:74234. [PMID: 34882088 PMCID: PMC8776251 DOI: 10.7554/elife.74234] [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: 09/29/2021] [Accepted: 12/08/2021] [Indexed: 11/13/2022] Open
Abstract
In the past few decades, aquatic animals have become popular model organisms in biology, spurring a growing need for establishing aquatic facilities. Zebrafish are widely studied and relatively easy to culture using commercial systems. However, a challenging aspect of maintaining aquatic facilities is animal feeding, which is both time- and resourceconsuming. We have developed an open-source fully automatic daily feeding system, Zebrafish Automatic Feeder (ZAF). ZAF is reliable, provides a standardized amount of food to every tank, is cost-efficient and easy to build. The advanced version, ZAF+, allows for the precise control of food distribution as a function of fish density per tank, and has a user-friendly interface. Both ZAF and ZAF+ are adaptable to any laboratory environment and facilitate the implementation of aquatic colonies. Here we provide all blueprints and instructions for building the mechanics, electronics, fluidics, as well as to setup the control software and its user-friendly graphical interface. Importantly, the design is modular and can be scaled to meet different user needs. Furthermore, our results show that ZAF and ZAF+ do not adversely affect zebrafish culture, enabling fully automatic feeding for any aquatic facility.
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Affiliation(s)
- Merlin Lange
- Chan Zuckerberg Biohub, San Francisco, United States
| | | | | | | | - Bin Yang
- Chan Zuckerberg Biohub, San Francisco, United States
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14
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Hotz AL, Jamali A, Rieser NN, Niklaus S, Aydin E, Myren‐Svelstad S, Lalla L, Jurisch‐Yaksi N, Yaksi E, Neuhauss SCF. Loss of glutamate transporter eaat2a leads to aberrant neuronal excitability, recurrent epileptic seizures, and basal hypoactivity. Glia 2021; 70:196-214. [PMID: 34716961 PMCID: PMC9297858 DOI: 10.1002/glia.24106] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 11/13/2022]
Abstract
Astroglial excitatory amino acid transporter 2 (EAAT2, GLT‐1, and SLC1A2) regulates the duration and extent of neuronal excitation by removing glutamate from the synaptic cleft. Hence, an impairment in EAAT2 function could lead to an imbalanced brain network excitability. Here, we investigated the functional alterations of neuronal and astroglial networks associated with the loss of function in the astroglia predominant eaat2a gene in zebrafish. We observed that eaat2a−/− mutant zebrafish larvae display recurrent spontaneous and light‐induced seizures in neurons and astroglia, which coincide with an abrupt increase in extracellular glutamate levels. In stark contrast to this hyperexcitability, basal neuronal and astroglial activity was surprisingly reduced in eaat2a−/− mutant animals, which manifested in decreased overall locomotion. Our results reveal an essential and mechanistic contribution of EAAT2a in balancing brain excitability, and its direct link to epileptic seizures.
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Affiliation(s)
- Adriana L. Hotz
- Department of Molecular Life SciencesUniversity of ZurichZurichSwitzerland
- Life Science Zürich Graduate School ‐ NeuroscienceUniversity of Zurich and ETH ZurichZurichSwitzerland
| | - Ahmed Jamali
- Kavli Institute for Systems Neuroscience and Centre for Neural ComputationFaculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyTrondheimNorway
| | - Nicolas N. Rieser
- Department of Molecular Life SciencesUniversity of ZurichZurichSwitzerland
- Life Science Zürich Graduate School ‐ NeuroscienceUniversity of Zurich and ETH ZurichZurichSwitzerland
| | - Stephanie Niklaus
- Department of Molecular Life SciencesUniversity of ZurichZurichSwitzerland
- Present address:
EraCal TherapeuticsSchlierenSwitzerland
| | - Ecem Aydin
- Kavli Institute for Systems Neuroscience and Centre for Neural ComputationFaculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyTrondheimNorway
| | - Sverre Myren‐Svelstad
- Kavli Institute for Systems Neuroscience and Centre for Neural ComputationFaculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyTrondheimNorway
- Department of Neurology and Clinical NeurophysiologySt. Olav's University HospitalTrondheimNorway
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health SciencesNorwegian University of Science and TechnologyTrondheimNorway
| | - Laetitia Lalla
- Kavli Institute for Systems Neuroscience and Centre for Neural ComputationFaculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyTrondheimNorway
| | - Nathalie Jurisch‐Yaksi
- Kavli Institute for Systems Neuroscience and Centre for Neural ComputationFaculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyTrondheimNorway
- Department of Neurology and Clinical NeurophysiologySt. Olav's University HospitalTrondheimNorway
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health SciencesNorwegian University of Science and TechnologyTrondheimNorway
| | - Emre Yaksi
- Kavli Institute for Systems Neuroscience and Centre for Neural ComputationFaculty of Medicine and Health Sciences, Norwegian University of Science and TechnologyTrondheimNorway
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15
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Melatonin Pretreatment Protects Against Status epilepticus, Glutamate Transport, and Oxidative Stress Induced by Kainic Acid in Zebrafish. Mol Neurobiol 2021; 59:266-275. [PMID: 34665406 DOI: 10.1007/s12035-021-02579-4] [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: 06/09/2021] [Accepted: 09/24/2021] [Indexed: 02/07/2023]
Abstract
Status epilepticus (SE) develops from abnormal electrical discharges, resulting in neuronal damage. Current treatments include antiepileptic drugs. However, the most common drugs used to treat seizures may sometimes be ineffective and have many side effects. Melatonin is an endogenous physiological hormone that is considered an alternative treatment for neurological disorders because of its free radical scavenging property. Thus, this study aimed to determine the effects of melatonin pretreatment on SE by inducing glutamatergic hyperstimulation in zebrafish. Seizures were induced in zebrafish using kainic acid (KA), a glutamate analog, and the seizure intensity was recorded for 60 min. Melatonin treatment for 7 days showed a decrease in seizure intensity (28%), latency to reach score 5 (14 min), and duration of SE (29%). In addition, melatonin treatment attenuated glutamate transporter levels, which significantly decreased in the zebrafish brain after 12 h of KA-induced seizures. Melatonin treatment reduced the increase in oxidative stress by reactive oxygen species formation through thiobarbituric acid reactive substances and 2',7'-dichiorofluorescin, induced by KA-seizure. An imbalance of antioxidant enzyme activities such as superoxide dismutase and catalase was influenced by melatonin and KA-induced seizures. Our study indicates that melatonin promotes a neuroprotective response against the epileptic profile in zebrafish. These effects could be related to the modulation of glutamatergic neurotransmission, recovery of glutamate uptake, and oxidative stress parameters in the zebrafish brain.
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16
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Tucker C, Collins R, Denvir MA, McDougald WA. PET/CT Technology in Adult Zebrafish: A Pilot Study Toward Live Longitudinal Imaging. Front Med (Lausanne) 2021; 8:725548. [PMID: 34708053 PMCID: PMC8542982 DOI: 10.3389/fmed.2021.725548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 09/07/2021] [Indexed: 11/13/2022] Open
Abstract
Decades of research have confirmed the beneficial and advantageous use of zebrafish (Danio rerio) as a model of human disease in biomedical studies. Not only are 71% of human genes shared with the zebrafish many of these genes are linked to human diseases. Currently, numerous transgenic and mutant genetic zebrafish lines are now widely available for use in research. Furthermore, zebrafish are relatively inexpensive to maintain compared to rodents. However, a limiting factor to fully utilising adult zebrafish in research is not the fish but the technological imaging tools available. In order to increase the utilisation of adult zebrafish, which are not naturally transparent, requires new imaging approaches. Therefore, this feasibility study: (1) presents an innovative designed PET/CT adult zebrafish imaging platform, capable of maintaining normal aquatic physiology during scanning; (2) assesses the practical aspects of adult zebrafish imaging; and (3) set basic procedural guidelines for zebrafish imaging during a PET/CT acquisition. Methods: With computer aided design (CAD) software an imaging platform was developed for 3D printing. A 3D printed zebrafish model was created from a CT acquisition of a zebrafish using the CAD software. This model and subsequently euthanised zebrafish were imaged post-injection using different concentrations of the radiotracer [18F]FDG with CT contrast. Results: PET/CT imaging was successful, revealing levels as low as 0.01 MBq could be detected in the fish. In the zebrafish imaging post-injection distribution of the radiotracer was observed away from the injection site as well as tissue uptake. Potential preliminary husbandry and welfare guidelines for the fish during and after PET/CT imaging were determined. Conclusion: Using PET/CT for adult zebrafish imaging as a viable non-invasive technological tool is feasible. Adult zebrafish PET/CT imaging has the potential to be a key imaging technique offering the possibilities of enhanced biomedical understanding and new translational data sets.
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Affiliation(s)
- Carl Tucker
- Bioresearch & Veterinary Services (BVS) Aquatics Facility, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Richard Collins
- Edinburgh College of Arts, University of Edinburgh, Edinburgh, United Kingdom
| | - Martin A. Denvir
- British Heart Foundation (BHF)-Centre for Cardiovascular Science, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Wendy A. McDougald
- British Heart Foundation (BHF)-Centre for Cardiovascular Science, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, United Kingdom
- Edinburgh Preclinical Imaging, Edinburgh Imaging, University of Edinburgh, Edinburgh, United Kingdom
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17
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Braems E, Tziortzouda P, Van Den Bosch L. Exploring the alternative: Fish, flies and worms as preclinical models for ALS. Neurosci Lett 2021; 759:136041. [PMID: 34118308 DOI: 10.1016/j.neulet.2021.136041] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 04/15/2021] [Accepted: 06/01/2021] [Indexed: 12/22/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is an incurable neurodegenerative disorder characterized by the loss of upper and lower motor neurons. In general, patients succumb to respiratory insufficiency due to respiratory muscle weakness. Despite many promising therapeutic strategies primarily identified in rodent models, patient trials remain rather unsuccessful. There is a clear need for alternative approaches, which could provide directions towards the justified use of rodents and which increase the likelihood to identify new promising clinical candidates. In the last decades, the use of fast genetic approaches and the development of high-throughput screening platforms in the nematode Caenorhabditis elegans, in the fruit fly (Drosophila melanogaster) and in zebrafish (Danio rerio) have contributed to new insights into ALS pathomechanisms, disease modifiers and therapeutic targets. In this mini-review, we provide an overview of these alternative small animal studies, modeling the most common ALS genes and discuss the most recent preclinical discoveries. We conclude that small animal models will not replace rodent models, yet they clearly represent an important asset for preclinical studies.
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Affiliation(s)
- Elke Braems
- KU Leuven - University of Leuven, Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), Leuven, Belgium; VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium
| | - Paraskevi Tziortzouda
- KU Leuven - University of Leuven, Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), Leuven, Belgium; VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium
| | - Ludo Van Den Bosch
- KU Leuven - University of Leuven, Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), Leuven, Belgium; VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium.
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18
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Costa FV, Rosa LV, Quadros VA, de Abreu MS, Santos ARS, Sneddon LU, Kalueff AV, Rosemberg DB. The use of zebrafish as a non-traditional model organism in translational pain research: the knowns and the unknowns. Curr Neuropharmacol 2021; 20:476-493. [PMID: 33719974 DOI: 10.2174/1570159x19666210311104408] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 02/24/2021] [Accepted: 02/28/2021] [Indexed: 11/22/2022] Open
Abstract
The ability of the nervous system to detect a wide range of noxious stimuli is crucial to avoid life-threatening injury and to trigger protective behavioral and physiological responses. Pain represents a complex phenomenon, including nociception associated with cognitive and emotional processing. Animal experimental models have been developed to understand the mechanisms involved in pain response, as well as to discover novel pharmacological and non-pharmacological anti-pain therapies. Due to the genetic tractability, similar physiology, low cost, and rich behavioral repertoire, the zebrafish (Danio rerio) has been considered a powerful aquatic model for modeling pain responses. Here, we summarize the molecular machinery of zebrafish to recognize painful stimuli, as well as emphasize how zebrafish-based pain models have been successfully used to understand specific molecular, physiological, and behavioral changes following different algogens and/or noxious stimuli (e.g., acetic acid, formalin, histamine, Complete Freund's Adjuvant, cinnamaldehyde, allyl isothiocyanate, and fin clipping). We also discuss recent advances in zebrafish-based studies and outline the potential advantages and limitations of the existing models to examine the mechanisms underlying pain responses from an evolutionary and translational perspective. Finally, we outline how zebrafish models can represent emergent tools to explore pain behaviors and pain-related mood disorders, as well as to facilitate analgesic therapy screening in translational pain research.
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Affiliation(s)
- Fabiano V Costa
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria RS. Brazil
| | - Luiz V Rosa
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria RS. Brazil
| | - Vanessa A Quadros
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria RS. Brazil
| | - Murilo S de Abreu
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, RS. Brazil
| | - Adair R S Santos
- Laboratory of Neurobiology of Pain and Inflammation, Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, Trindade, Florianópolis, SC. Brazil
| | - Lynne U Sneddon
- University of Gothenburg, Department of Biological & Environmental Sciences, Box 461, SE-405 30 Gothenburg. Sweden
| | - Allan V Kalueff
- School of Pharmacy, Southwest University, Chongqing, China; Ural Federal University, Ekaterinburg. Russian Federation
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria RS. Brazil
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19
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Yaksi E, Jamali A, Diaz Verdugo C, Jurisch-Yaksi N. Past, present and future of zebrafish in epilepsy research. FEBS J 2021; 288:7243-7255. [PMID: 33394550 DOI: 10.1111/febs.15694] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/17/2020] [Accepted: 12/31/2020] [Indexed: 12/17/2022]
Abstract
Animal models contribute greatly to our understanding of brain development and function as well as its dysfunction in neurological diseases. Epilepsy research is a very good example of how animal models can provide us with a mechanistic understanding of the genes, molecules, and pathophysiological processes involved in disease. Over the course of the last two decades, zebrafish came in as a new player in epilepsy research, with an expanding number of laboratories using this animal to understand epilepsy and to discover new strategies for preventing seizures. Yet, zebrafish as a model offers a lot more for epilepsy research. In this viewpoint, we aim to highlight some key contributions of zebrafish to epilepsy research, and we want to emphasize the great untapped potential of this animal model for expanding these contributions. We hope that our suggestions will trigger further discussions between clinicians and researchers with a common goal to understand and cure epilepsy.
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Affiliation(s)
- Emre Yaksi
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ahmed Jamali
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Neurology and Clinical Neurophysiology, St Olav University Hospital, Trondheim, Norway
| | - Carmen Diaz Verdugo
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Nathalie Jurisch-Yaksi
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Neurology and Clinical Neurophysiology, St Olav University Hospital, Trondheim, Norway.,Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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20
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Folgueira M, Riva-Mendoza S, Ferreño-Galmán N, Castro A, Bianco IH, Anadón R, Yáñez J. Anatomy and Connectivity of the Torus Longitudinalis of the Adult Zebrafish. Front Neural Circuits 2020; 14:8. [PMID: 32231522 PMCID: PMC7082427 DOI: 10.3389/fncir.2020.00008] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/25/2020] [Indexed: 11/13/2022] Open
Abstract
This study describes the cytoarchitecture of the torus longitudinalis (TL) in adult zebrafish by using light and electron microscopy, as well as its main connections as revealed by DiI tract tracing. In addition, by using high resolution confocal imaging followed by digital tracing, we describe the morphology of tectal pyramidal cells (type I cells) that are GFP positive in the transgenic line Tg(1.4dlx5a-dlx6a:GFP)ot1. The TL consists of numerous small and medium-sized neurons located in a longitudinal eminence attached to the medial optic tectum. A small proportion of these neurons are GABAergic. The neuropil shows three types of synaptic terminals and numerous dendrites. Tracing experiments revealed that the main efference of the TL is formed of parallel-like fibers that course within the marginal layer of the optic tectum. A toral projection to the thalamic nucleus rostrolateralis is also observed. Afferents to the TL come from visual and cerebellum-related nuclei in the pretectum, namely the central, intercalated and the paracommissural pretectal nuclei, as well as from the subvalvular nucleus in the isthmus. Additional afferents to the TL may come from the cerebellum but their origins could not be confirmed. The tectal afferent projection to the TL originates from cells similar to the type X cells described in other cyprinids. Tectal pyramidal neurons show round or piriform cell bodies, with spiny apical dendritic trees in the marginal layer. This anatomical study provides a basis for future functional and developmental studies focused on this cerebellum-like circuit in zebrafish.
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Affiliation(s)
- Mónica Folgueira
- Department of Biology, Faculty of Sciences, University of A Coruña, Coruña, Spain.,Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, Coruña, Spain
| | - Selva Riva-Mendoza
- Department of Biology, Faculty of Sciences, University of A Coruña, Coruña, Spain
| | | | - Antonio Castro
- Department of Biology, Faculty of Sciences, University of A Coruña, Coruña, Spain.,Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, Coruña, Spain
| | - Isaac H Bianco
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| | - Ramón Anadón
- Department of Functional Biology, Faculty of Biology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Julián Yáñez
- Department of Biology, Faculty of Sciences, University of A Coruña, Coruña, Spain.,Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, Coruña, Spain
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21
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Glia-neuron interactions underlie state transitions to generalized seizures. Nat Commun 2019; 10:3830. [PMID: 31444362 PMCID: PMC6707163 DOI: 10.1038/s41467-019-11739-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 07/31/2019] [Indexed: 11/08/2022] Open
Abstract
Brain activity and connectivity alter drastically during epileptic seizures. The brain networks shift from a balanced resting state to a hyperactive and hypersynchronous state. It is, however, less clear which mechanisms underlie the state transitions. By studying neural and glial activity in zebrafish models of epileptic seizures, we observe striking differences between these networks. During the preictal period, neurons display a small increase in synchronous activity only locally, while the gap-junction-coupled glial network was highly active and strongly synchronized across large distances. The transition from a preictal state to a generalized seizure leads to an abrupt increase in neural activity and connectivity, which is accompanied by a strong alteration in glia-neuron interactions and a massive increase in extracellular glutamate. Optogenetic activation of glia excites nearby neurons through the action of glutamate and gap junctions, emphasizing a potential role for glia-glia and glia-neuron connections in the generation of epileptic seizures. During epileptic seizures, neural activity across the brain switches into a hyperactive and hypersynchronized state. Here, the authors report on the role of glia-glia and glia-neuron interactions in mediating the changes that result in the ictal state in a zebrafish model of epilepsy.
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22
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Gawel K, Banono NS, Michalak A, Esguerra CV. A critical review of zebrafish schizophrenia models: Time for validation? Neurosci Biobehav Rev 2019; 107:6-22. [PMID: 31381931 DOI: 10.1016/j.neubiorev.2019.08.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 07/02/2019] [Accepted: 08/01/2019] [Indexed: 12/14/2022]
Abstract
Schizophrenia is a mental disorder that affects 1% of the population worldwide and is manifested as a broad spectrum of symptoms, from hallucinations to memory impairment. It is believed that genetic and/or environmental factors may contribute to the occurrence of this disease. Recently, the zebrafish has emerged as a valuable and attractive model for various neurological disorders including schizophrenia. In this review, we describe current pharmacological models of schizophrenia with special emphasis on providing insights into the pros and cons of using zebrafish as a behavioural model of this disease. Moreover, we highlight the advantages and utility of using zebrafish for elucidating the genetic mechanisms underlying this psychiatric disorder. We believe that the zebrafish has high potential also in the area of precision medicine and may complement the development of therapeutics, especially for pharmacoresistant patients.
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Affiliation(s)
- Kinga Gawel
- Chemical Neuroscience Group, Centre for Molecular Medicine Norway, University of Oslo, Gaustadalléen 21, 0349, Oslo, Norway; Department of Experimental and Clinical Pharmacology, Medical University of Lublin, Jaczewskiego St. 8b, 20-090, Lublin, Poland.
| | - Nancy Saana Banono
- Chemical Neuroscience Group, Centre for Molecular Medicine Norway, University of Oslo, Gaustadalléen 21, 0349, Oslo, Norway
| | - Agnieszka Michalak
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Chodzki St. 4A, 20-093, Lublin, Poland
| | - Camila V Esguerra
- Chemical Neuroscience Group, Centre for Molecular Medicine Norway, University of Oslo, Gaustadalléen 21, 0349, Oslo, Norway; Department of Pharmacy, University of Oslo, Oslo, Norway.
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23
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Olstad EW, Ringers C, Hansen JN, Wens A, Brandt C, Wachten D, Yaksi E, Jurisch-Yaksi N. Ciliary Beating Compartmentalizes Cerebrospinal Fluid Flow in the Brain and Regulates Ventricular Development. Curr Biol 2019; 29:229-241.e6. [PMID: 30612902 PMCID: PMC6345627 DOI: 10.1016/j.cub.2018.11.059] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 10/31/2018] [Accepted: 11/27/2018] [Indexed: 12/17/2022]
Abstract
Motile cilia are miniature, propeller-like extensions, emanating from many cell types across the body. Their coordinated beating generates a directional fluid flow, which is essential for various biological processes, from respiration to reproduction. In the nervous system, ependymal cells extend their motile cilia into the brain ventricles and contribute to cerebrospinal fluid (CSF) flow. Although motile cilia are not the only contributors to CSF flow, their functioning is crucial, as patients with motile cilia defects develop clinical features, like hydrocephalus and scoliosis. CSF flow was suggested to primarily deliver nutrients and remove waste, but recent studies emphasized its role in brain development and function. Nevertheless, it remains poorly understood how ciliary beating generates and organizes CSF flow to fulfill these roles. Here, we study motile cilia and CSF flow in the brain ventricles of larval zebrafish. We identified that different populations of motile ciliated cells are spatially organized and generate a directional CSF flow powered by ciliary beating. Our investigations revealed that CSF flow is confined within individual ventricular cavities, with little exchange of fluid between ventricles, despite a pulsatile CSF displacement caused by the heartbeat. Interestingly, our results showed that the ventricular boundaries supporting this compartmentalized CSF flow are abolished during bodily movement, highlighting that multiple physiological processes regulate the hydrodynamics of CSF flow. Finally, we showed that perturbing cilia reduces hydrodynamic coupling between the brain ventricles and disrupts ventricular development. We propose that motile-cilia-generated flow is crucial in regulating the distribution of CSF within and across brain ventricles. Spatially organized motile cilia with rotational beats create directional CSF flow Ciliary beating, heartbeat, and locomotion generate distinct components of CSF flow Joint action of these components balances CSF compartmentalization and dispersion Disruption of ciliary beating leads to ventricular defects during brain development
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Affiliation(s)
- Emilie W Olstad
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, The Faculty of Medicine, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway
| | - Christa Ringers
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, The Faculty of Medicine, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway
| | - Jan N Hansen
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, The Faculty of Medicine, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway; Institute of Innate Immunity, Department of Biophysical Imaging, University Hospital, University of Bonn, Sigmund-Freud-Str. 25, 53127 Bonn, Germany
| | - Adinda Wens
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, The Faculty of Medicine, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway
| | - Cecilia Brandt
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, The Faculty of Medicine, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway
| | - Dagmar Wachten
- Institute of Innate Immunity, Department of Biophysical Imaging, University Hospital, University of Bonn, Sigmund-Freud-Str. 25, 53127 Bonn, Germany
| | - Emre Yaksi
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, The Faculty of Medicine, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway; Department of Neurology and Clinical Neurophysiology, St. Olavs University Hospital, Edvard Griegs Gate 8, 7030 Trondheim, Norway.
| | - Nathalie Jurisch-Yaksi
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, The Faculty of Medicine, Norwegian University of Science and Technology, Olav Kyrres Gate 9, 7030 Trondheim, Norway; Department of Neurology and Clinical Neurophysiology, St. Olavs University Hospital, Edvard Griegs Gate 8, 7030 Trondheim, Norway.
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24
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Haehnel-Taguchi M, Akanyeti O, Liao JC. Behavior, Electrophysiology, and Robotics Experiments to Study Lateral Line Sensing in Fishes. Integr Comp Biol 2018; 58:874-883. [PMID: 29982706 PMCID: PMC6204992 DOI: 10.1093/icb/icy066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The lateral line system is a sensory system unique to fishes and amphibians. It is composed of distributed mechanosensory hair cell organs on the head and body (neuromasts), which are sensitive to pressure gradients and water movements. Over the last decade, we have pursued an interdisciplinary approach by combining behavioral, electrophysiology, and robotics experiments to study this fascinating sensory system. In behavioral and electrophysiology experiments, we have studied the larval lateral line system in the model genetic organism, zebrafish (Danio rerio). We found that the lateral line system, even in 5-day-old larvae, is involved in an array of behaviors that are critical to survival, and the deflection of a single neuromast can elicit a swimming response. In robotics experiments, we used a range of physical models with distributed pressure sensors to better understand the hydrodynamic environments from the local perspective of a fish or robot. So far, our efforts have focused on extracting control-related information for a range of application scenarios including characterizing unsteady flows such as Kármán vortex streets for station holding. We also used robot models to test biological hypotheses on how morphology and movement of fishes affect lateral line sensing. Overall, with this review we aim to increase the visibility and accessibility of this multi-disciplinary research approach.
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Affiliation(s)
- Melanie Haehnel-Taguchi
- Faculty of Biology, Albert-Ludwigs Universität Freiburg, Hauptstraße 1, Freiburg D-79104, Germany
| | - Otar Akanyeti
- Department of Computer Science, Aberystwyth University, Penglais Campus, Aberystwyth SY23 3FL, UK
| | - James C Liao
- The Whitney Laboratory for Marine Bioscience, Department of Biology, University of Florida, St. Augustine, FL 32080, USA
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25
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Quadros VA, Costa FV, Canzian J, Nogueira CW, Rosemberg DB. Modulatory role of conspecific alarm substance on aggression and brain monoamine oxidase activity in two zebrafish populations. Prog Neuropsychopharmacol Biol Psychiatry 2018; 86:322-330. [PMID: 29588212 DOI: 10.1016/j.pnpbp.2018.03.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/05/2018] [Accepted: 03/22/2018] [Indexed: 02/07/2023]
Affiliation(s)
- Vanessa A Quadros
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil.
| | - Fabiano V Costa
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Julia Canzian
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Cristina W Nogueira
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistr and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA 70458, USA.
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26
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Kizil C. Mechanisms of Pathology-Induced Neural Stem Cell Plasticity and Neural Regeneration in Adult Zebrafish Brain. CURRENT PATHOBIOLOGY REPORTS 2018; 6:71-77. [PMID: 29938129 PMCID: PMC5978899 DOI: 10.1007/s40139-018-0158-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Purpose of the Review The purpose of this study is to review the current knowledge on the damage-induced molecular programs that underlie the regenerative ability in zebrafish brain. Recent Findings Neural stem cells are the reservoir for new neurons during development and regeneration of the vertebrate brains. Pathological conditions such as neurodegenerative diseases hamper neural stem cell plasticity and neurogenic outcome in humans, whereas adult zebrafish brain can enhance proliferation and neurogenic capacity of its neural stem cells despite the incipient pathology. Evidence suggests that zebrafish uses damage-induced molecular programs to enable neural stem cells to efficiently initiate regeneration. Since this aptitude may be harnessed for regenerative therapies in human brain, understanding the molecular programs regulating neural stem cell proliferation and quiescence in zebrafish is of utmost importance for clinical efforts. Summary Specific molecular programs that are different than those in the homeostatic conditions regulate adult zebrafish neural stem cell plasticity and the regenerative capacity after injury and neurodegeneration. These programs can serve as candidates for stem cell-based regenerative therapies in humans.
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Affiliation(s)
- Caghan Kizil
- 1German Centre for Neurodegenerative Diseases (DZNE) Dresden, Helmholtz Association, Arnoldstrasse 18, 01307 Dresden, Germany.,2Center for Regenerative Therapies Dresden (CRTD), TU Dresden, Fetscherstrasse 105, 01307 Dresden, Germany
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27
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Automatic multiple zebrafish larvae tracking in unconstrained microscopic video conditions. Sci Rep 2017; 7:17596. [PMID: 29242568 PMCID: PMC5730596 DOI: 10.1038/s41598-017-17894-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 12/01/2017] [Indexed: 01/30/2023] Open
Abstract
The accurate tracking of zebrafish larvae movement is fundamental to research in many biomedical, pharmaceutical, and behavioral science applications. However, the locomotive characteristics of zebrafish larvae are significantly different from adult zebrafish, where existing adult zebrafish tracking systems cannot reliably track zebrafish larvae. Further, the far smaller size differentiation between larvae and the container render the detection of water impurities inevitable, which further affects the tracking of zebrafish larvae or require very strict video imaging conditions that typically result in unreliable tracking results for realistic experimental conditions. This paper investigates the adaptation of advanced computer vision segmentation techniques and multiple object tracking algorithms to develop an accurate, efficient and reliable multiple zebrafish larvae tracking system. The proposed system has been tested on a set of single and multiple adult and larvae zebrafish videos in a wide variety of (complex) video conditions, including shadowing, labels, water bubbles and background artifacts. Compared with existing state-of-the-art and commercial multiple organism tracking systems, the proposed system improves the tracking accuracy by up to 31.57% in unconstrained video imaging conditions. To facilitate the evaluation on zebrafish segmentation and tracking research, a dataset with annotated ground truth is also presented. The software is also publicly accessible.
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28
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mTOR-related neuropathology in mutant tsc2 zebrafish: Phenotypic, transcriptomic and pharmacological analysis. Neurobiol Dis 2017; 108:225-237. [DOI: 10.1016/j.nbd.2017.09.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 08/03/2017] [Accepted: 09/05/2017] [Indexed: 12/15/2022] Open
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Tsang B, Zahid H, Ansari R, Lee RCY, Partap A, Gerlai R. Breeding Zebrafish: A Review of Different Methods and a Discussion on Standardization. Zebrafish 2017; 14:561-573. [PMID: 28873037 DOI: 10.1089/zeb.2017.1477] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In recent years, a rapidly increasing number of scientific papers have been published that utilize zebrafish (Danio rerio) as an alternative model organism in the study of a wide range of biological phenomena from cancer to behavior. This is, in large part, due to the prolific nature, relative ease of maintenance, and sufficiently high genetic homology of zebrafish to humans. With the surge of zebrafish use in animal research, the variations in methodologies of breeding and husbandry of this species have also increased. Investigators usually focus on the development and implementation of rigorous laboratory control that is specific to their studies. We suggest that the same scrutiny and attention may be required for the methods of breeding and housing of zebrafish. This article reviews a variety of zebrafish husbandry and breeding techniques and conditions employed around the world. It discusses factors ranging from numerous aspects of rearing/housing conditions through the sex ratio of the breeding group to the composition of the diet of zebrafish that may vary across laboratories. It provides some feedback on the potential pros and cons of the different methods. It argues that there is a substantial need for systematic analysis of these methods, that is, the effects of environmental factors on zebrafish health and breeding. It also discusses the question as to whether some degree of standardization of these methods is needed to enhance cross-laboratory comparability of results.
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Affiliation(s)
- Benjamin Tsang
- Department of Psychology, University of Toronto Mississauga , Mississauga, Canada
| | - Hifsa Zahid
- Department of Psychology, University of Toronto Mississauga , Mississauga, Canada
| | - Rida Ansari
- Department of Psychology, University of Toronto Mississauga , Mississauga, Canada
| | | | - Aman Partap
- Department of Psychology, University of Toronto Mississauga , Mississauga, Canada
| | - Robert Gerlai
- Department of Psychology, University of Toronto Mississauga , Mississauga, Canada
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Khan KM, Collier AD, Meshalkina DA, Kysil EV, Khatsko SL, Kolesnikova T, Morzherin YY, Warnick JE, Kalueff AV, Echevarria DJ. Zebrafish models in neuropsychopharmacology and CNS drug discovery. Br J Pharmacol 2017; 174:1925-1944. [PMID: 28217866 PMCID: PMC5466539 DOI: 10.1111/bph.13754] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 02/11/2017] [Accepted: 02/14/2017] [Indexed: 12/12/2022] Open
Abstract
Despite the high prevalence of neuropsychiatric disorders, their aetiology and molecular mechanisms remain poorly understood. The zebrafish (Danio rerio) is increasingly utilized as a powerful animal model in neuropharmacology research and in vivo drug screening. Collectively, this makes zebrafish a useful tool for drug discovery and the identification of disordered molecular pathways. Here, we discuss zebrafish models of selected human neuropsychiatric disorders and drug-induced phenotypes. As well as covering a broad range of brain disorders (from anxiety and psychoses to neurodegeneration), we also summarize recent developments in zebrafish genetics and small molecule screening, which markedly enhance the disease modelling and the discovery of novel drug targets.
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Affiliation(s)
- Kanza M Khan
- Department of PsychologyUniversity of Southern MississippiHattiesburgMSUSA
| | - Adam D Collier
- Department of PsychologyUniversity of Southern MississippiHattiesburgMSUSA
- The International Zebrafish Neuroscience Research Consortium (ZNRC)SlidellLAUSA
| | - Darya A Meshalkina
- The International Zebrafish Neuroscience Research Consortium (ZNRC)SlidellLAUSA
- Institute of Translational BiomedicineSt. Petersburg State UniversitySt. PetersburgRussia
| | - Elana V Kysil
- Institute of Translational BiomedicineSt. Petersburg State UniversitySt. PetersburgRussia
| | | | | | | | - Jason E Warnick
- The International Zebrafish Neuroscience Research Consortium (ZNRC)SlidellLAUSA
- Department of Behavioral SciencesArkansas Tech UniversityRussellvilleARUSA
| | - Allan V Kalueff
- The International Zebrafish Neuroscience Research Consortium (ZNRC)SlidellLAUSA
- Institute of Translational BiomedicineSt. Petersburg State UniversitySt. PetersburgRussia
- Ural Federal UniversityEkaterinburgRussia
- Research Institute of Marine Drugs and Nutrition, College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangGuangdongChina
| | - David J Echevarria
- Department of PsychologyUniversity of Southern MississippiHattiesburgMSUSA
- The International Zebrafish Neuroscience Research Consortium (ZNRC)SlidellLAUSA
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31
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Morton PD, Ishibashi N, Jonas RA. Neurodevelopmental Abnormalities and Congenital Heart Disease: Insights Into Altered Brain Maturation. Circ Res 2017; 120:960-977. [PMID: 28302742 PMCID: PMC5409515 DOI: 10.1161/circresaha.116.309048] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 12/14/2016] [Accepted: 12/15/2016] [Indexed: 01/14/2023]
Abstract
In the past 2 decades, it has become evident that individuals born with congenital heart disease (CHD) are at risk of developing life-long neurological deficits. Multifactorial risk factors contributing to neurodevelopmental abnormalities associated with CHD have been identified; however, the underlying causes remain largely unknown, and efforts to address this issue have only recently begun. There has been a dramatic shift in focus from newly acquired brain injuries associated with corrective and palliative heart surgery to antenatal and preoperative factors governing altered brain maturation in CHD. In this review, we describe key time windows of development during which the immature brain is vulnerable to injury. Special emphasis is placed on the dynamic nature of cellular events and how CHD may adversely impact the cellular units and networks necessary for proper cognitive and motor function. In addition, we describe current gaps in knowledge and offer perspectives about what can be done to improve our understanding of neurological deficits in CHD. Ultimately, a multidisciplinary approach will be essential to prevent or improve adverse neurodevelopmental outcomes in individuals surviving CHD.
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Affiliation(s)
- Paul D Morton
- From the Center for Neuroscience Research and Children's National Heart Institute, Children's National Health System, Washington, DC
| | - Nobuyuki Ishibashi
- From the Center for Neuroscience Research and Children's National Heart Institute, Children's National Health System, Washington, DC.
| | - Richard A Jonas
- From the Center for Neuroscience Research and Children's National Heart Institute, Children's National Health System, Washington, DC.
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32
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Negishi J, Omori Y, Shindo M, Takanashi H, Musha S, Nagayama S, Hirayama J, Nishina H, Nakakura T, Mogi C, Sato K, Okajima F, Mochimaru Y, Tomura H. Manganese and cobalt activate zebrafish ovarian cancer G-protein-coupled receptor 1 but not GPR4. J Recept Signal Transduct Res 2017; 37:401-408. [PMID: 28270026 DOI: 10.1080/10799893.2017.1298130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Mammalian ovarian G-protein-coupled receptor 1 (OGR1) is activated by some metals in addition to extracellular protons and coupling to multiple intracellular signaling pathways. In the present study, we examined whether zebrafish OGR1, zebrafish GPR4, and human GPR4 (zOGR1, zGPR4, and hGPR4, respectively) could sense the metals and activate the intracellular signaling pathways. On one hand, we found that only manganese and cobalt of the tested metals stimulated SRE-promoter activities in zOGR1-overexpressed HEK293T cells. On the other hand, none of the metals tested stimulated the promoter activities in zGPR4- and hGPR4-overexpressed cells. The OGR1 mutant (H4F), which is lost to activation by extracellular protons, did not stimulate metal-induced SRE-promoter activities. These results suggest that zOGR1, but not GPR4, is also a metal-sensing G-protein-coupled receptor in addition to a proton-sensing G-protein-coupled receptor, although not all metals that activate hOGR1 activated zOGR1.
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Affiliation(s)
- Jun Negishi
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan
| | - Yuka Omori
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan
| | - Mami Shindo
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan
| | - Hayate Takanashi
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan
| | - Shiori Musha
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan
| | - Suminori Nagayama
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan
| | - Jun Hirayama
- b Department of Developmental and Regenerative Biology , Medical Research Institute, Tokyo Medical and Dental University , Tokyo , Japan
| | - Hiroshi Nishina
- b Department of Developmental and Regenerative Biology , Medical Research Institute, Tokyo Medical and Dental University , Tokyo , Japan
| | - Takashi Nakakura
- c Department of Anatomy, Graduate School of Medicine , Teikyo University , Tokyo , Japan
| | - Chihiro Mogi
- d Laboratory of Signal Transduction, Department of Molecular Medicine , Institute for Molecular and Cellular Regulation, Gunma University , Maebashi , Japan
| | - Koichi Sato
- d Laboratory of Signal Transduction, Department of Molecular Medicine , Institute for Molecular and Cellular Regulation, Gunma University , Maebashi , Japan
| | - Fumikazu Okajima
- e Laboratory of Pathophysiology, Department of Pharmacy, Faculty of Pharmaceutical Sciences , Aomori University , Aomori , Japan
| | - Yuta Mochimaru
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan
| | - Hideaki Tomura
- a Laboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture , Meiji University , Kawasaki , Japan.,f Institute of Endocrinology, Meiji University , Kawasaki , Japan
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Gerlai R. Zebrafish and relational memory: Could a simple fish be useful for the analysis of biological mechanisms of complex vertebrate learning? Behav Processes 2017; 141:242-250. [PMID: 28143721 DOI: 10.1016/j.beproc.2017.01.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 01/06/2017] [Accepted: 01/24/2017] [Indexed: 12/19/2022]
Abstract
Analysis of the zebrafish allows one to combine two distinct scientific approaches, comparative ethology and neurobehavioral genetics. Furthermore, this species arguably represents an optimal compromise between system complexity and practical simplicity. This mini-review focuses on a complex form of learning, relational learning and memory, in zebrafish. It argues that zebrafish are capable of this type of learning, and it attempts to show how this species may be useful in the analysis of the mechanisms and the evolution of this complex brain function. The review is not intended to be comprehensive. It is a short opinion piece that reflects the author's own biases, and it draws some of its examples from the work coming from his own laboratory. Nevertheless, it is written in the hope that it will persuade those who have not utilized zebrafish and who may be interested in opening their research horizon to this relatively novel but powerful vertebrate research tool.
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Affiliation(s)
- Robert Gerlai
- Department of Psychology, University of Toronto Mississauga, 3359 Mississauga Road North, Rm CCT4004 Mississauga, Ontario L5L 1C6, Canada.
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Ramdya P, Schneider J, Levine JD. The neurogenetics of group behavior in Drosophila melanogaster. J Exp Biol 2017; 220:35-41. [DOI: 10.1242/jeb.141457] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
ABSTRACT
Organisms rarely act in isolation. Their decisions and movements are often heavily influenced by direct and indirect interactions with conspecifics. For example, we each represent a single node within a social network of family and friends, and an even larger network of strangers. This group membership can affect our opinions and actions. Similarly, when in a crowd, we often coordinate our movements with others like fish in a school, or birds in a flock. Contributions of the group to individual behaviors are observed across a wide variety of taxa but their biological mechanisms remain largely unknown. With the advent of powerful computational tools as well as the unparalleled genetic accessibility and surprisingly rich social life of Drosophila melanogaster, researchers now have a unique opportunity to investigate molecular and neuronal determinants of group behavior. Conserved mechanisms and/or selective pressures in D. melanogaster can likely inform a much wider phylogenetic scale. Here, we highlight two examples to illustrate how quantitative and genetic tools can be combined to uncover mechanisms of two group behaviors in D. melanogaster: social network formation and collective behavior. Lastly, we discuss future challenges towards a full understanding how coordinated brain activity across many individuals gives rise to the behavioral patterns of animal societies.
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Affiliation(s)
- Pavan Ramdya
- Department of Biology and Bioengineering, California Institute of Technology, Pasadena, CA 91106, USA
| | - Jonathan Schneider
- Department of Biology, University of Toronto at Mississauga, Mississauga, Ontario, CanadaL5L1C6
| | - Joel D. Levine
- Department of Biology, University of Toronto at Mississauga, Mississauga, Ontario, CanadaL5L1C6
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Abstract
Sensing and responding to our environment requires functional neurons that act in concert. Neuronal cell loss resulting from degenerative diseases cannot be replaced in humans, causing a functional impairment to integrate and/or respond to sensory cues. In contrast, zebrafish (Danio rerio) possess an endogenous capacity to regenerate lost neurons. Here, we will focus on the processes that lead to neuronal regeneration in the zebrafish retina. Dying retinal neurons release a damage signal, tumor necrosis factor α, which induces the resident radial glia, the Müller glia, to reprogram and re-enter the cell cycle. The Müller glia divide asymmetrically to produce a Müller glia that exits the cell cycle and a neuronal progenitor cell. The arising neuronal progenitor cells undergo several rounds of cell divisions before they migrate to the site of damage to differentiate into the neuronal cell types that were lost. Molecular and immunohistochemical studies have predominantly provided insight into the mechanisms that regulate retinal regeneration. However, many processes during retinal regeneration are dynamic and require live-cell imaging to fully discern the underlying mechanisms. Recently, a multiphoton imaging approach of adult zebrafish retinal cultures was developed. We will discuss the use of live-cell imaging, the currently available tools and those that need to be developed to advance our knowledge on major open questions in the field of retinal regeneration.
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Affiliation(s)
- Manuela Lahne
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - David R Hyde
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
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36
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Giunta M, Edvardson S, Xu Y, Schuelke M, Gomez-Duran A, Boczonadi V, Elpeleg O, Müller JS, Horvath R. Altered RNA metabolism due to a homozygous RBM7 mutation in a patient with spinal motor neuropathy. Hum Mol Genet 2016; 25:2985-2996. [PMID: 27193168 PMCID: PMC5181591 DOI: 10.1093/hmg/ddw149] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/09/2016] [Accepted: 05/10/2016] [Indexed: 12/23/2022] Open
Abstract
The exosome complex is the most important RNA processing machinery within the cell. Mutations in its subunits EXOSC8 and EXOSC3 cause pontocerebellar hypoplasia, spinal muscular atrophy (SMA) and central nervous system demyelination. We present a patient with SMA-like phenotype carrying a homozygous mutation in RBM7-a subunit of the nuclear exosome targeting (NEXT) complex-which is known to bind and carry specific subtypes of coding and non-coding RNAs to the exosome. The NEXT complex with other protein complexes is responsible for the substrate specificity of the exosome. We performed RNA-sequencing (RNA-seq) analysis on primary fibroblasts of patients with mutations in EXOSC8 and RBM7 and gene knock-down experiments using zebrafish as a model system. RNA-seq analysis identified significantly altered expression of 62 transcripts shared by the two patient cell lines. Knock-down of rbm7, exosc8 and exosc3 in zebrafish showed a common pattern of defects in motor neurons and cerebellum. Our data indicate that impaired RNA metabolism may underlie the clinical phenotype by fine tuning gene expression which is essential for correct neuronal differentiation.
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Affiliation(s)
- Michele Giunta
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
| | - Shimon Edvardson
- The Monique and Jacques Roboh Department of Genetic Research, Hadassah, Hebrew University Medical Center, 91120 Jerusalem, Israel
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
| | - Yaobo Xu
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
| | - Markus Schuelke
- Department of Neuropediatrics and NeuroCure Clinical Research Center, Charité-Universitätsmedizin, Charitéplatz 1, 10117 Berlin, Germany
| | - Aurora Gomez-Duran
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
| | - Veronika Boczonadi
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
| | - Orly Elpeleg
- The Monique and Jacques Roboh Department of Genetic Research, Hadassah, Hebrew University Medical Center, 91120 Jerusalem, Israel
| | - Juliane S Müller
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
| | - Rita Horvath
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
- Institute of Genetic Medicine, Newcastle University, Central Parkway, NE1 3BZ, Newcastle upon Tyne, UK
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Spikol ED, Laverriere CE, Robnett M, Carter G, Wolfe E, Glasgow E. Zebrafish Models of Prader-Willi Syndrome: Fast Track to Pharmacotherapeutics. Diseases 2016; 4. [PMID: 27857842 PMCID: PMC5110251 DOI: 10.3390/diseases4010013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Prader-Willi syndrome (PWS) is a rare genetic neurodevelopmental disorder characterized by an insatiable appetite, leading to chronic overeating and obesity. Additional features include short stature, intellectual disability, behavioral problems and incomplete sexual development. Although significant progress has been made in understanding the genetic basis of PWS, the mechanisms underlying the pathogenesis of the disorder remain poorly understood. Treatment for PWS consists mainly of palliative therapies; curative therapies are sorely needed. Zebrafish, Danio rerio, represent a promising way forward for elucidating physiological problems such as obesity and identifying new pharmacotherapeutic options for PWS. Over the last decade, an increased appreciation for the highly conserved biology among vertebrates and the ability to perform high-throughput drug screening has seen an explosion in the use of zebrafish for disease modeling and drug discovery. Here, we review recent advances in developing zebrafish models of human disease. Aspects of zebrafish genetics and physiology that are relevant to PWS will be discussed, and the advantages and disadvantages of zebrafish models will be contrasted with current animal models for this syndrome. Finally, we will present a paradigm for drug screening in zebrafish that is potentially the fastest route for identifying and delivering curative pharmacotherapies to PWS patients.
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38
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Fontana BD, Meinerz DL, Rosa LVC, Mezzomo NJ, Silveira A, Giuliani GS, Quadros VA, Filho GL, Blaser RE, Rosemberg DB. Modulatory action of taurine on ethanol-induced aggressive behavior in zebrafish. Pharmacol Biochem Behav 2016; 141:18-27. [DOI: 10.1016/j.pbb.2015.11.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 11/11/2015] [Accepted: 11/26/2015] [Indexed: 12/21/2022]
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Wermter FC, Bock C, Dreher W. Investigating GluCEST and its specificity for pH mapping at low temperatures. NMR IN BIOMEDICINE 2015; 28:1507-17. [PMID: 26412088 DOI: 10.1002/nbm.3416] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 08/19/2015] [Accepted: 08/24/2015] [Indexed: 05/17/2023]
Abstract
Chemical exchange saturation transfer (CEST) from glutamate to water (GluCEST) is a powerful tool for mapping glutamate concentration and intracellular pH. GluCEST could also be helpful to understand the physiology of lower aquatic vertebrates and invertebrates. Therefore, this study aimed to investigate the GluCEST effect and the exchange rate ksw from amine protons of glutamate to water in a broad range of temperatures (1-37°C) and pH (5.5-8.0). Z-spectra were measured from glutamate solutions at different pH values and temperatures and analysed by numerically solving the Bloch-McConnell equation. As expected, a strong dependence of the GluCEST effect and the determined ksw values on pH and temperature was observed. In addition, a strong dependence of the GluCEST effect on phosphate buffer concentration was confirmed. The in vitro data show that GluCEST is detectable in the whole temperature range, even at 1°C. An interpolation function for the exchange rate ksw was determined for the considered range of temperatures and pH values, showing a bijective relation between the exchange rate and pH at a given temperature. To investigate the specificity of GluCEST imaging at low temperatures, the CEST effect was investigated for several metabolites relevant for CEST imaging of the brain. As an example, the contribution of GluCEST to the total CEST effect at 3 ppm was estimated for zebrafish (Danio rerio). It is shown that also at lower temperatures glutamate is the major contributor to the total CEST effect, particularly if the experimental parameters are optimized.
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Affiliation(s)
- Felizitas C Wermter
- University of Bremen, Department of Chemistry, in-vivo-MR Group, Bremen, Germany
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Department of Integrative Ecophysiology, Bremerhaven, Germany
| | - Christian Bock
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Department of Integrative Ecophysiology, Bremerhaven, Germany
| | - Wolfgang Dreher
- University of Bremen, Department of Chemistry, in-vivo-MR Group, Bremen, Germany
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Keatinge M, Bui H, Menke A, Chen YC, Sokol AM, Bai Q, Ellett F, Da Costa M, Burke D, Gegg M, Trollope L, Payne T, McTighe A, Mortiboys H, de Jager S, Nuthall H, Kuo MS, Fleming A, Schapira AHV, Renshaw SA, Highley JR, Chacinska A, Panula P, Burton EA, O'Neill MJ, Bandmann O. Glucocerebrosidase 1 deficient Danio rerio mirror key pathological aspects of human Gaucher disease and provide evidence of early microglial activation preceding alpha-synuclein-independent neuronal cell death. Hum Mol Genet 2015; 24:6640-52. [PMID: 26376862 PMCID: PMC4634372 DOI: 10.1093/hmg/ddv369] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 09/04/2015] [Indexed: 01/12/2023] Open
Abstract
Autosomal recessively inherited glucocerebrosidase 1 (GBA1) mutations cause the lysosomal storage disorder Gaucher's disease (GD). Heterozygous GBA1 mutations (GBA1+/−) are the most common risk factor for Parkinson's disease (PD). Previous studies typically focused on the interaction between the reduction of glucocerebrosidase (enzymatic) activity in GBA1+/− carriers and alpha-synuclein-mediated neurotoxicity. However, it is unclear whether other mechanisms also contribute to the increased risk of PD in GBA1+/− carriers. The zebrafish genome does not contain alpha-synuclein (SNCA), thus providing a unique opportunity to study pathogenic mechanisms unrelated to alpha-synuclein toxicity. Here we describe a mutant zebrafish line created by TALEN genome editing carrying a 23 bp deletion in gba1 (gba1c.1276_1298del), the zebrafish orthologue of human GBA1. Marked sphingolipid accumulation was already detected at 5 days post-fertilization with accompanying microglial activation and early, sustained up-regulation of miR-155, a master regulator of inflammation. gba1c.1276_1298del mutant zebrafish developed a rapidly worsening phenotype from 8 weeks onwards with striking reduction in motor activity by 12 weeks. Histopathologically, we observed marked Gaucher cell invasion of the brain and other organs. Dopaminergic neuronal cell count was normal through development but reduced by >30% at 12 weeks in the presence of ubiquitin-positive, intra-neuronal inclusions. This gba1c.1276_1298del zebrafish line is the first viable vertebrate model sharing key pathological features of GD in both neuronal and non-neuronal tissue. Our study also provides evidence for early microglial activation prior to alpha-synuclein-independent neuronal cell death in GBA1 deficiency and suggests upregulation of miR-155 as a common denominator across different neurodegenerative disorders.
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Affiliation(s)
- Marcus Keatinge
- The Bateson Centre, Sheffield Institute for Translational Neuroscience (SITraN)
| | - Hai Bui
- Lilly Research Laboratories, Eli Lilly & Company, Indianapolis, USA
| | | | - Yu-Chia Chen
- Neuroscience Center and Department of Anatomy, University of Helsinki, Finland
| | - Anna M Sokol
- Laboratory of Mitochondrial Biogenesis, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Qing Bai
- Pittsburgh Institute for Neurodegenerative Diseases and Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | | | - Marc Da Costa
- The Bateson Centre, Sheffield Institute for Translational Neuroscience (SITraN)
| | - Derek Burke
- Molecular and Genetics Unit, University College London Institute of Child Health, Enzyme Unit and Metabolic Unit, Chemical Pathology, Great Ormond Street Hospital, London, UK
| | - Matthew Gegg
- Department of Clinical Neurosciences, University College London Institute of Neurology, London, UK
| | - Lisa Trollope
- The Bateson Centre, Sheffield Institute for Translational Neuroscience (SITraN)
| | - Thomas Payne
- The Bateson Centre, Sheffield Institute for Translational Neuroscience (SITraN)
| | - Aimee McTighe
- The Bateson Centre, Sheffield Institute for Translational Neuroscience (SITraN)
| | | | - Sarah de Jager
- Department of Medical Genetics, Cambridge Institute for Medical Research University of Cambridge, Cambridge, UK and
| | - Hugh Nuthall
- Lilly Research Laboratories, Eli Lilly & Company, Indianapolis, USA
| | - Ming-Shang Kuo
- Lilly Research Laboratories, Eli Lilly & Company, Indianapolis, USA
| | - Angeleen Fleming
- Department of Medical Genetics, Cambridge Institute for Medical Research University of Cambridge, Cambridge, UK and
| | - Anthony H V Schapira
- Department of Clinical Neurosciences, University College London Institute of Neurology, London, UK
| | - Stephen A Renshaw
- The Bateson Centre, Department of Infection and Immunity, University of Sheffield, Sheffield, UK
| | | | - Agnieszka Chacinska
- Laboratory of Mitochondrial Biogenesis, International Institute of Molecular and Cell Biology, Warsaw, Poland
| | - Pertti Panula
- Neuroscience Center and Department of Anatomy, University of Helsinki, Finland
| | - Edward A Burton
- Pittsburgh Institute for Neurodegenerative Diseases and Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | | | - Oliver Bandmann
- The Bateson Centre, Sheffield Institute for Translational Neuroscience (SITraN),
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