1
|
Camerin L, Maleeva G, Gomila AMJ, Suárez-Pereira I, Matera C, Prischich D, Opar E, Riefolo F, Berrocoso E, Gorostiza P. Photoswitchable Carbamazepine Analogs for Non-Invasive Neuroinhibition In Vivo. Angew Chem Int Ed Engl 2024; 63:e202403636. [PMID: 38887153 DOI: 10.1002/anie.202403636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/24/2024] [Accepted: 06/17/2024] [Indexed: 06/20/2024]
Abstract
A problem of systemic pharmacotherapy is off-target activity, which causes adverse effects. Outstanding examples include neuroinhibitory medications like antiseizure drugs, which are used against epilepsy and neuropathic pain but cause systemic side effects. There is a need of drugs that inhibit nerve signals locally and on-demand without affecting other regions of the body. Photopharmacology aims to address this problem with light-activated drugs and localized illumination in the target organ. Here, we have developed photoswitchable derivatives of the widely prescribed antiseizure drug carbamazepine. For that purpose, we expanded our method of ortho azologization of tricyclic drugs to meta/para and to N-bridged diazocine. Our results validate the concept of ortho cryptoazologs (uniquely exemplified by Carbazopine-1) and bring to light Carbadiazocine (8), which can be photoswitched between 400-590 nm light (using violet LEDs and halogen lamps) and shows good drug-likeness and predicted safety. Both compounds display photoswitchable activity in vitro and in translucent zebrafish larvae. Carbadiazocine (8) also offers in vivo analgesic efficacy (mechanical and thermal stimuli) in a rat model of neuropathic pain and a simple and compelling treatment demonstration with non-invasive illumination.
Collapse
Affiliation(s)
- Luisa Camerin
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
- Doctorate program in organic chemistry, University of Barcelona, Barcelona, 08028, Spain
| | - Galyna Maleeva
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
| | - Alexandre M J Gomila
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
| | - Irene Suárez-Pereira
- Neuropsychopharmacology & Psychobiology Research Group, Department of Neuroscience, University of Cádiz, Cádiz, 11003, Spain
- Networking Biomedical Center in Mental Health (CIBER-SAM), ISCIII, Madrid, 28029, Spain
- Institute for Research and Innovation in Biomedical Sciences of Cádiz, INiBICA, University Hospital Puerta del Mar, Cádiz, 11009, Spain
| | - Carlo Matera
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
- Department of Pharmaceutical Sciences, University of Milan, Milan, 20133, Italy
| | - Davia Prischich
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
- Current address: Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, SW120BZ, United Kingdom
| | - Ekin Opar
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
| | - Fabio Riefolo
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
- Current address: Teamit Institute, Partnerships, Barcelona Health Hub, Barcelona, 08025, Spain
| | - Esther Berrocoso
- Neuropsychopharmacology & Psychobiology Research Group, Department of Neuroscience, University of Cádiz, Cádiz, 11003, Spain
- Networking Biomedical Center in Mental Health (CIBER-SAM), ISCIII, Madrid, 28029, Spain
- Institute for Research and Innovation in Biomedical Sciences of Cádiz, INiBICA, University Hospital Puerta del Mar, Cádiz, 11009, Spain
| | - Pau Gorostiza
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology, Barcelona, 08028, Spain
- Networking Biomedical Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), ISCIII, Madrid, 28029, Spain
- Catalan Institution of Research and Advanced Studies (ICREA), Barcelona, 08010, Spain
| |
Collapse
|
2
|
Wei S, Yang Y, Zong Y, Yang Y, Guo M, Zhang Z, Zhang R, Ru S, Zhang X. Long-term exposure to prometryn damages the visual system and changes color preference of female zebrafish (Danio rerio). CHEMOSPHERE 2024; 363:142835. [PMID: 38996981 DOI: 10.1016/j.chemosphere.2024.142835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 07/14/2024]
Abstract
Color vision, initiated from the cone photoreceptors, is essential for fish to obtain environmental information. Although the visual impairment of triazine herbicide prometryn has been reported, data on the effect of herbicide such as prometryn on natural color sensitivity of fish is scarce. Here, zebrafish were exposed to prometryn (0, 1, 10, and 100 μg/L) from 2 h post-fertilization to 160 days post-fertilization, to explore the effect and underlying mechanism of prometryn on color perception. The results indicated that 10 and 100 μg/L prometryn shortened the height of red-green cone cells, and down-regulated expression of genes involved in light transduction pathways (arr3a, pde6h) and visual cycle (lrata, rpe65a); meanwhile, 1 μg/L prometryn increased all-trans-retinoic acid levels in zebrafish eyes, and up-regulated the expression of genes involved in retinoid metabolism (rdh10b, aldh1a2, cyp26a1), finally leading to weakened red and green color perception of female zebrafish. This study first clarified how herbicide such as prometryn affected color vision of a freshwater fish after a long-term exposure from both morphological and functional disruption, and its hazard on color vision mediated-ecologically relevant tasks should not be ignored.
Collapse
Affiliation(s)
- Shuhui Wei
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China
| | - Yixin Yang
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China
| | - Yao Zong
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yang Yang
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China
| | - Meiping Guo
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China
| | - Zhenzhong Zhang
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China
| | - Rui Zhang
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China
| | - Shaoguo Ru
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China.
| | - Xiaona Zhang
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003, Shandong province, China.
| |
Collapse
|
3
|
Waalkes MR, Leathery M, Peck M, Barr A, Cunill A, Hageter J, Horstick EJ. Light wavelength modulates search behavior performance in zebrafish. Sci Rep 2024; 14:16533. [PMID: 39019915 PMCID: PMC11255219 DOI: 10.1038/s41598-024-67262-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 07/09/2024] [Indexed: 07/19/2024] Open
Abstract
Visual systems have evolved to discriminate between different wavelengths of light. The ability to perceive color, or specific light wavelengths, is important as color conveys crucial information about both biotic and abiotic features in the environment. Indeed, different wavelengths of light can drive distinct patterns of activity in the vertebrate brain, yet what remains incompletely understood is whether distinct wavelengths can invoke etiologically relevant behavioral changes. To address how specific wavelengths in the visible spectrum modulate behavioral performance, we use larval zebrafish and a stereotypic light-search behavior. Prior work has shown that the cessation of light triggers a transitional light-search behavior, which we use to interrogate wavelength-dependent behavioral modulation. Using 8 narrow spectrum light sources in the visible range, we demonstrate that all wavelengths induce motor parameters consistent with search behavior, yet the magnitude of search behavior is spectrum sensitive and the underlying motor parameters are modulated in distinct patterns across short, medium, and long wavelengths. However, our data also establishes that not all motor features of search are impacted by wavelength. To define how wavelength modulates search performance, we performed additional assays with alternative wavelengths, dual wavelengths, and variable intensity. Last, we also tested blind larvae to resolve which components of wavelength dependent behavioral changes potentially include signaling from non-retinal photoreception. These findings have important implications as organisms can be exposed to varying wavelengths in laboratory and natural settings and therefore impose unique behavioral outputs.
Collapse
Affiliation(s)
- Matthew R Waalkes
- Department of Biology Morgantown, West Virginia University, Morgantown, WV, USA
| | - Maegan Leathery
- Department of Biology Morgantown, West Virginia University, Morgantown, WV, USA
| | - Madeline Peck
- Department of Biology Morgantown, West Virginia University, Morgantown, WV, USA
| | - Allison Barr
- Department of Biology Morgantown, West Virginia University, Morgantown, WV, USA
| | - Alexander Cunill
- Department of Biology Morgantown, West Virginia University, Morgantown, WV, USA
| | - John Hageter
- Department of Biology Morgantown, West Virginia University, Morgantown, WV, USA
| | - Eric J Horstick
- Department of Biology Morgantown, West Virginia University, Morgantown, WV, USA.
- Department of Neuroscience Morgantown, West Virginia University, Morgantown, WV, USA.
| |
Collapse
|
4
|
Wang YY, Liang XF, Lu K. Knockout of SWS2 in zebrafish (Danio rerio) reveals its roles in feeding and phototactic behaviors. Gene 2024; 897:148059. [PMID: 38043833 DOI: 10.1016/j.gene.2023.148059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 10/30/2023] [Accepted: 11/30/2023] [Indexed: 12/05/2023]
Abstract
Common ancestor of vertebrates had four cone opsin subfamilies to obtain color vision: ultraviolet-sensitive (SWS1), blue-sensitive (SWS2), middle wavelength sensitive (RH2) and long wavelength sensitive (LWS). Nevertheless, eutherian mammals had lost the SWS2 and RH2 opsins during their nocturnal lifestyle. Many studies had demonstrated the role of SWS1 and LWS cones in feeding, mate choice and skin pigment cell formation. However, the role of SWS2 and RH2 cones remain elusive. In the present study, we used an ideal model visual system, zebrafish, which still have the four cone opsins, to generate a SWS2 knockout zebrafish line. Through various behavioral test, we found that sws2-/- zebrafish larvae exhibited increased food intake compared with WT. Additionally, there were significantly increased the gene expression of phototransduction pathways in sws2-/- zebrafish larvae. Compared to WT, mutant zebrafish showed weaker phototaxis of red light and changed sensitivity of yellow, red and blue lights. But both mutant and WT zebrafish preferred the red light than other wavelengths of light. Taken together, we proposed that SWS2 cone is not necessary for feeding and phototaxis in zebrafish.
Collapse
Affiliation(s)
- Yu-Ye Wang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan 430070, China; Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| | - Xu-Fang Liang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan 430070, China; Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China.
| | - Ke Lu
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan 430070, China; Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| |
Collapse
|
5
|
Baden T. Ancestral photoreceptor diversity as the basis of visual behaviour. Nat Ecol Evol 2024; 8:374-386. [PMID: 38253752 DOI: 10.1038/s41559-023-02291-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/10/2023] [Indexed: 01/24/2024]
Abstract
Animal colour vision is based on comparing signals from different photoreceptors. It is generally assumed that processing different spectral types of photoreceptor mainly serves colour vision. Here I propose instead that photoreceptors are parallel feature channels that differentially support visual-motor programmes like motion vision behaviours, prey capture and predator evasion. Colour vision may have emerged as a secondary benefit of these circuits, which originally helped aquatic vertebrates to visually navigate and segment their underwater world. Specifically, I suggest that ancestral vertebrate vision was built around three main systems, including a high-resolution general purpose greyscale system based on ancestral red cones and rods to mediate visual body stabilization and navigation, a high-sensitivity specialized foreground system based on ancestral ultraviolet cones to mediate threat detection and prey capture, and a net-suppressive system based on ancestral green and blue cones for regulating red/rod and ultraviolet circuits. This ancestral strategy probably still underpins vision today, and different vertebrate lineages have since adapted their original photoreceptor circuits to suit their diverse visual ecologies.
Collapse
Affiliation(s)
- Tom Baden
- University of Sussex, Sussex Neuroscience, Sussex Center for Sensory Neuroscience and Computation, Brighton, UK.
| |
Collapse
|
6
|
Wang Z, Zhang J, Symvoulidis P, Guo W, Zhang L, Wilson MA, Boyden ES. Imaging the voltage of neurons distributed across entire brains of larval zebrafish. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.15.571964. [PMID: 38168290 PMCID: PMC10760087 DOI: 10.1101/2023.12.15.571964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Neurons interact in networks distributed throughout the brain. Although much effort has focused on whole-brain calcium imaging, recent advances in genetically encoded voltage indicators (GEVIs) raise the possibility of imaging voltage of neurons distributed across brains. To achieve this, a microscope must image at high volumetric rate and signal-to-noise ratio. We present a remote scanning light-sheet microscope capable of imaging GEVI-expressing neurons distributed throughout entire brains of larval zebrafish at a volumetric rate of 200.8 Hz. We measured voltage of ∼1/3 of the neurons of the brain, distributed throughout. We observed that neurons firing at different times during a sequence were located at different brain locations, for sequences elicited by a visual stimulus, which mapped onto locations throughout the optic tectum, as well as during stimulus-independent bursts, which mapped onto locations in the cerebellum and medulla. Whole-brain voltage imaging may open up frontiers in the fundamental operation of neural systems.
Collapse
|
7
|
Herget U, Ryu S, De Marco RJ. Altered glucocorticoid reactivity and behavioral phenotype in rx3-/- larval zebrafish. Front Endocrinol (Lausanne) 2023; 14:1187327. [PMID: 37484970 PMCID: PMC10358986 DOI: 10.3389/fendo.2023.1187327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 06/21/2023] [Indexed: 07/25/2023] Open
Abstract
Introduction The transcription factor rx3 is important for the formation of the pituitary and parts of the hypothalamus. Mutant animals lacking rx3 function have been well characterized in developmental studies, but relatively little is known about their behavioral phenotypes. Methods We used cell type staining to reveal differences in stress axis architecture, and performed cortisol measurements and behavior analysis to study both hormonal and behavioral stress responses in rx3 mutants. Results and Discussion Consistent with the role of rx3 in hypothalamus and pituitary development, we show a distinct loss of corticotrope cells involved in stress regulation, severe reduction of pituitary innervation by hypothalamic cells, and lack of stress-induced cortisol release in rx3 mutants. Interestingly, despite these deficits, we report that rx3-/- larval zebrafish can still display nominal behavioral responses to both stressful and non-stressful stimuli. However, unlike wildtypes, mutants lacking proper pituitary-interrenal function do not show enhanced behavioral performance under moderate stress level, supporting the view that corticotroph cells are not required for behavioral responses to some types of stressful stimuli but modulate subtle behavioral adjustments under moderate stress.
Collapse
Affiliation(s)
- Ulrich Herget
- Research Group Developmental Genetics of the Nervous System, Max Planck Institute for Medical Research, Heidelberg, Germany
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, United States
| | - Soojin Ryu
- Research Group Developmental Genetics of the Nervous System, Max Planck Institute for Medical Research, Heidelberg, Germany
- Living Systems Institute, College of Medicine and Health, University of Exeter, Exeter, United Kingdom
| | - Rodrigo J. De Marco
- Research Group Developmental Genetics of the Nervous System, Max Planck Institute for Medical Research, Heidelberg, Germany
- School of Biological and Environmental Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, United Kingdom
| |
Collapse
|
8
|
Lovin LM, Scarlett KR, Henke AN, Sims JL, Brooks BW. Experimental arena size alters larval zebrafish photolocomotor behaviors and influences bioactivity responses to a model neurostimulant. ENVIRONMENT INTERNATIONAL 2023; 177:107995. [PMID: 37329757 DOI: 10.1016/j.envint.2023.107995] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 05/18/2023] [Accepted: 05/24/2023] [Indexed: 06/19/2023]
Abstract
Zebrafish behavior is increasingly common in biomedical and environmental studies of chemical bioactivity. Multiple experimental arena sizes have been used to measure photolocomotion in zebrafish depending on age, endpoints observed, and instrumentation, among other factors. However, the extent to which methodological parameters may influence naïve behavioral performance and detection of behavioral changes is poorly understood. Here we measured photolocomotion and behavioral profiles of naïve larval zebrafish across arena sizes. We then performed concentration response studies with the model neurostimulant caffeine, again across various arena dimensions. We found total swimming distance of unexposed fish to increase logarithmically with arena size, which as related to circumference, area, and volume. Photomotor response during light/dark transitions also increased with arena size. Following caffeine exposure, total distance travelled was significantly (p < 0.001) affected by well size, caffeine treatment (p < 0.001), and the interaction of these two experimental factors (p < 0.001). In addition, behavioral response profiles showed differences between 96 well plates and larger well sizes. Biphasic response, with stimulation at lower concentrations and refraction at the highest concentration, was observed in dark conditions for the 96 well size only, though almost no effects were identified in the light. However, swimming behavior was significantly (p < 0.1) altered in the highest studied caffeine treatment level in larger well sizes during both light and dark periods. Our results indicate zebrafish swim more in larger arenas and arena size influences behavioral response profiles to caffeine, though differences were mostly observed between very small and large arenas. Further, careful consideration should be given when choosing arena size, because small wells may lead to restriction, while larger wells may differentially reflect biologically relevant effects. These findings can improve comparability among experimental designs and demonstrates the importance of understanding confounding methodological variables.
Collapse
Affiliation(s)
- Lea M Lovin
- Department of Environmental Science, Baylor University, Waco, TX, USA; Center for Research and Aquatic Systems Research, Baylor University, Waco, TX, USA
| | - Kendall R Scarlett
- Department of Environmental Science, Baylor University, Waco, TX, USA; Center for Research and Aquatic Systems Research, Baylor University, Waco, TX, USA
| | - Abigail N Henke
- Center for Research and Aquatic Systems Research, Baylor University, Waco, TX, USA; Department of Biology, Baylor University, Waco, TX, USA
| | - Jaylen L Sims
- Department of Environmental Science, Baylor University, Waco, TX, USA; Center for Research and Aquatic Systems Research, Baylor University, Waco, TX, USA
| | - Bryan W Brooks
- Department of Environmental Science, Baylor University, Waco, TX, USA; Center for Research and Aquatic Systems Research, Baylor University, Waco, TX, USA.
| |
Collapse
|
9
|
Dorigo A, Valishetti K, Hetsch F, Matsui H, Meier JC, Namikawa K, Köster RW. Functional regionalization of the differentiating cerebellar Purkinje cell population occurs in an activity-dependent manner. Front Mol Neurosci 2023; 16:1166900. [PMID: 37181649 PMCID: PMC10174242 DOI: 10.3389/fnmol.2023.1166900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/11/2023] [Indexed: 05/16/2023] Open
Abstract
Introduction The cerebellum is organized into functional regions each dedicated to process different motor or sensory inputs for controlling different locomotor behaviors. This functional regionalization is prominent in the evolutionary conserved single-cell layered Purkinje cell (PC) population. Fragmented gene expression domains suggest a genetic organization of PC layer regionalization during cerebellum development. However, the establishment of such functionally specific domains during PC differentiation remained elusive. Methods and results We show the progressive emergence of functional regionalization of PCs from broad responses to spatially restricted regions in zebrafish by means of in vivo Ca2+-imaging during stereotypic locomotive behavior. Moreover, we reveal that formation of new dendritic spines during cerebellar development using in vivo imaging parallels the time course of functional domain development. Pharmacological as well as cell-type specific optogenetic inhibition of PC neuronal activity results in reduced PC dendritic spine density and an altered stagnant pattern of functional domain formation in the PC layer. Discussion Hence, our study suggests that functional regionalization of the PC layer is driven by physiological activity of maturing PCs themselves.
Collapse
Affiliation(s)
- Alessandro Dorigo
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
| | - Komali Valishetti
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
| | - Florian Hetsch
- Cell Physiology, Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
- Institute of Pathophysiology, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Hideaki Matsui
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
- Department of Neuroscience of Disease, Brain Research Institute, Niigata University, Niigata, Japan
| | - Jochen C. Meier
- Cell Physiology, Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
| | - Kazuhiko Namikawa
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
- *Correspondence: Kazuhiko Namikawa,
| | - Reinhard W. Köster
- Cellular and Molecular Neurobiology, Technische Universität Braunschweig, Braunschweig, Germany
- Reinhard W. Köster,
| |
Collapse
|
10
|
Lupše N, Kłodawska M, Truhlářová V, Košátko P, Kašpar V, Bitja Nyom AR, Musilova Z. Developmental changes of opsin gene expression in ray-finned fishes (Actinopterygii). Proc Biol Sci 2022; 289:20221855. [DOI: 10.1098/rspb.2022.1855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Fish often change their habitat and trophic preferences during development. Dramatic functional differences between embryos, larvae, juveniles and adults also concern sensory systems, including vision. Here, we focus on the photoreceptors (rod and cone cells) in the retina and their gene expression profiles during development. Using comparative transcriptomics on 63 species, belonging to 23 actinopterygian orders, we report general developmental patterns of opsin expression, mostly suggesting an increased importance of the rod opsin (
RH1
) gene and the long-wavelength-sensitive cone opsin, and a decreasing importance of the shorter wavelength-sensitive cone opsin throughout development. Furthermore, we investigate in detail ontogenetic changes in 14 selected species (from Polypteriformes, Acipenseriformes, Cypriniformes, Aulopiformes and Cichliformes), and we report examples of expanded cone opsin repertoires, cone opsin switches (mostly within
RH2
) and increasing rod : cone ratio as evidenced by the opsin and phototransduction cascade genes. Our findings provide molecular support for developmental stage-specific visual palettes of ray-finned fishes and shifts between, which most likely arose in response to ecological, behavioural and physiological factors.
Collapse
Affiliation(s)
- Nik Lupše
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 12844 Prague, Czech Republic
| | - Monika Kłodawska
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 12844 Prague, Czech Republic
| | - Veronika Truhlářová
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 12844 Prague, Czech Republic
| | - Prokop Košátko
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 12844 Prague, Czech Republic
| | - Vojtěch Kašpar
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Arnold Roger Bitja Nyom
- Department of Management of Fisheries and Aquatic Ecosystems, University of Douala, Douala P.O. Box 7236, Cameroon
- Department of Biological Sciences, University of Ngaoundéré, Ngaoundéré P.O. Box 454, Cameroon
| | - Zuzana Musilova
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 12844 Prague, Czech Republic
| |
Collapse
|
11
|
Matera C, Calvé P, Casadó-Anguera V, Sortino R, Gomila AMJ, Moreno E, Gener T, Delgado-Sallent C, Nebot P, Costazza D, Conde-Berriozabal S, Masana M, Hernando J, Casadó V, Puig MV, Gorostiza P. Reversible Photocontrol of Dopaminergic Transmission in Wild-Type Animals. Int J Mol Sci 2022; 23:ijms231710114. [PMID: 36077512 PMCID: PMC9456102 DOI: 10.3390/ijms231710114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/27/2022] [Accepted: 08/31/2022] [Indexed: 01/09/2023] Open
Abstract
Understanding the dopaminergic system is a priority in neurobiology and neuropharmacology. Dopamine receptors are involved in the modulation of fundamental physiological functions, and dysregulation of dopaminergic transmission is associated with major neurological disorders. However, the available tools to dissect the endogenous dopaminergic circuits have limited specificity, reversibility, resolution, or require genetic manipulation. Here, we introduce azodopa, a novel photoswitchable ligand that enables reversible spatiotemporal control of dopaminergic transmission. We demonstrate that azodopa activates D1-like receptors in vitro in a light-dependent manner. Moreover, it enables reversibly photocontrolling zebrafish motility on a timescale of seconds and allows separating the retinal component of dopaminergic neurotransmission. Azodopa increases the overall neural activity in the cortex of anesthetized mice and displays illumination-dependent activity in individual cells. Azodopa is the first photoswitchable dopamine agonist with demonstrated efficacy in wild-type animals and opens the way to remotely controlling dopaminergic neurotransmission for fundamental and therapeutic purposes.
Collapse
Affiliation(s)
- Carlo Matera
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute for Science and Technology, 08028 Barcelona, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy
| | - Pablo Calvé
- Hospital del Mar Medical Research Institute (IMIM), Barcelona Biomedical Research Park, 08003 Barcelona, Spain
| | - Verònica Casadó-Anguera
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Institute of Biomedicine, University of Barcelona, 08028 Barcelona, Spain
| | - Rosalba Sortino
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute for Science and Technology, 08028 Barcelona, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Alexandre M. J. Gomila
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute for Science and Technology, 08028 Barcelona, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Estefanía Moreno
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Institute of Biomedicine, University of Barcelona, 08028 Barcelona, Spain
| | - Thomas Gener
- Hospital del Mar Medical Research Institute (IMIM), Barcelona Biomedical Research Park, 08003 Barcelona, Spain
| | - Cristina Delgado-Sallent
- Hospital del Mar Medical Research Institute (IMIM), Barcelona Biomedical Research Park, 08003 Barcelona, Spain
| | - Pau Nebot
- Hospital del Mar Medical Research Institute (IMIM), Barcelona Biomedical Research Park, 08003 Barcelona, Spain
| | - Davide Costazza
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute for Science and Technology, 08028 Barcelona, Spain
| | - Sara Conde-Berriozabal
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Institute of Neuroscience, University of Barcelona, IDIBAPS, CIBERNED, 08036 Barcelona, Spain
| | - Mercè Masana
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Institute of Neuroscience, University of Barcelona, IDIBAPS, CIBERNED, 08036 Barcelona, Spain
| | - Jordi Hernando
- Department of Chemistry, Autonomous University of Barcelona (UAB), 08193 Cerdanyola del Vallès, Spain
| | - Vicent Casadó
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Institute of Biomedicine, University of Barcelona, 08028 Barcelona, Spain
| | - M. Victoria Puig
- Hospital del Mar Medical Research Institute (IMIM), Barcelona Biomedical Research Park, 08003 Barcelona, Spain
| | - Pau Gorostiza
- Institute for Bioengineering of Catalonia (IBEC), the Barcelona Institute for Science and Technology, 08028 Barcelona, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
- Correspondence:
| |
Collapse
|
12
|
Malik S. Effect of time-restricted feeding on 24-h rhythm in phototactic behavior of zebrafish. BIOL RHYTHM RES 2021. [DOI: 10.1080/09291016.2019.1669941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Shikha Malik
- Chronobiology and Animal Behavior Laboratory, School of Studies in Life Science, Pandit Ravishankar Shukla University, Raipur, Chhattisgarh, India
| |
Collapse
|
13
|
Gatto E, Bruzzone M, Lucon-Xiccato T. Innate visual discrimination abilities of zebrafish larvae. Behav Processes 2021; 193:104534. [PMID: 34755638 DOI: 10.1016/j.beproc.2021.104534] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 10/23/2021] [Accepted: 10/27/2021] [Indexed: 12/12/2022]
Abstract
The ability to discriminate between objects visually plays a key role in animals' interactions with their environment because it enables them to recognise companions, prey, and predators. In the zebrafish, Danio rerio, hatching occurs early on during development (48-72 h post fertilisation), and the larvae must forage and evade predators despite their immature sensory and cognitive systems. Using a preference paradigm, we investigated whether larval zebrafish are nonetheless capable of discriminating between visual stimuli. We found that larvae discriminated not only between figures with different colours or different shapes, but also between two identical figures with different orientations and between sets of figures with different numerosities. By manipulating larvae's exposure to objects before the test, we demonstrated that their discrimination abilities are innate and do not depend upon experience. This study highlighted that zebrafish possess relatively sophisticated visual discrimination abilities even at the larval stage. These abilities likely improve larval survival via the recognition of biologically relevant stimuli.
Collapse
Affiliation(s)
- Elia Gatto
- Department of General Psychology, University of Padova, Padova, Italy.
| | - Matteo Bruzzone
- Department of General Psychology, University of Padova, Padova, Italy; Padua Neuroscience Center - PNC, University of Padova, Padova, Italy
| | - Tyrone Lucon-Xiccato
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| |
Collapse
|
14
|
Chen AB, Deb D, Bahl A, Engert F. Algorithms underlying flexible phototaxis in larval zebrafish. J Exp Biol 2021; 224:268333. [PMID: 34027982 DOI: 10.1242/jeb.238386] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 04/12/2021] [Indexed: 11/20/2022]
Abstract
To thrive, organisms must maintain physiological and environmental variables in suitable ranges. Given that these variables undergo constant fluctuations over varying time scales, how do biological control systems maintain control over these values? We explored this question in the context of phototactic behavior in larval zebrafish. We demonstrate that larval zebrafish use phototaxis to maintain environmental luminance at a set point, that the value of this set point fluctuates on a time scale of seconds when environmental luminance changes, and that it is determined by calculating the mean input across both sides of the visual field. These results expand on previous studies of flexible phototaxis in larval zebrafish; they suggest that larval zebrafish exert homeostatic control over the luminance of their surroundings, and that feedback from the surroundings drives allostatic changes to the luminance set point. As such, we describe a novel behavioral algorithm with which larval zebrafish exert control over a sensory variable.
Collapse
Affiliation(s)
- Alex B Chen
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.,Program in Neuroscience, Harvard Medical School, Boston, MA 02115, USA.,Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Diptodip Deb
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Armin Bahl
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA
| | - Florian Engert
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA
| |
Collapse
|
15
|
Palumbo F, Serneels B, Yaksi E. Optimized protocol for conditioned place avoidance learning in juvenile zebrafish. STAR Protoc 2021; 2:100465. [PMID: 33912851 PMCID: PMC8065339 DOI: 10.1016/j.xpro.2021.100465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Conditioned place avoidance assays are broadly used in mammals to study different cognitive aspects of operant learning. Here, we introduce a series of experimental designs for training juvenile zebrafish in short-term and long-term conditioned place avoidance assays. Our goal is to promote standardization of animal handling procedures and setup conditions to improve animal welfare and reproducibility while studying operant learning behaviors in juvenile zebrafish. For complete details on the use and execution of this protocol, please refer to Palumbo et al. (2020). We describe juvenile zebrafish handling procedures for operant learning behavior We detail experimental designs for short- and long-term learning We introduce potential pitfalls for chemogenetic ablation of neurons We highlight the importance of animal welfare for successful learning performance
Collapse
Affiliation(s)
- Fabrizio Palumbo
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7030 Trondheim, Norway
| | - Bram Serneels
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7030 Trondheim, Norway
| | - Emre Yaksi
- Kavli Institute for Systems Neuroscience and Centre for Neural Computation, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7030 Trondheim, Norway
| |
Collapse
|
16
|
Guggiana Nilo DA, Riegler C, Hübener M, Engert F. Distributed chromatic processing at the interface between retina and brain in the larval zebrafish. Curr Biol 2021; 31:1945-1953.e5. [PMID: 33636122 DOI: 10.1016/j.cub.2021.01.088] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 12/30/2020] [Accepted: 01/25/2021] [Indexed: 02/07/2023]
Abstract
Larval zebrafish (Danio rerio) are an ideal organism for studying color vision, as their retina possesses four types of cone photoreceptors, covering most of the visible range and into the UV.1,2 Additionally, their eye and nervous systems are accessible to imaging, given that they are naturally transparent.3-5 Recent studies have found that, through a set of wavelength-range-specific horizontal, bipolar, and retinal ganglion cells (RGCs),6-9 the eye relays tetrachromatic information to several retinorecipient areas (RAs).10-13 The main RA is the optic tectum, receiving 97% of the RGC axons via the neuropil mass termed arborization field 10 (AF10).14,15 Here, we aim to understand the processing of chromatic signals at the interface between RGCs and their major brain targets. We used 2-photon calcium imaging to separately measure the responses of RGCs and neurons in the brain to four different chromatic stimuli in awake animals. We find that chromatic information is widespread throughout the brain, with a large variety of responses among RGCs, and an even greater diversity in their targets. Specific combinations of response types are enriched in specific nuclei, but there is no single color processing structure. In the main interface in this pathway, the connection between AF10 and tectum, we observe key elements of neural processing, such as enhanced signal decorrelation and improved chromatic decoding.16,17 A richer stimulus set revealed that these enhancements occur in the context of a more distributed code in tectum, facilitating chromatic signal association in this small vertebrate brain.
Collapse
Affiliation(s)
- Drago A Guggiana Nilo
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA; Harvard Biophysics Graduate Program, Harvard University, Boston, MA 02115, USA; Department Synapses-Circuits-Plasticity, Max Planck Institute of Neurobiology, 81252 Martinsried, Germany.
| | - Clemens Riegler
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA; Department of Neuroscience and Developmental Biology, University of Vienna, A-1090 Vienna, Austria
| | - Mark Hübener
- Department Synapses-Circuits-Plasticity, Max Planck Institute of Neurobiology, 81252 Martinsried, Germany
| | - Florian Engert
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.
| |
Collapse
|
17
|
Recording Channelrhodopsin-Evoked Field Potentials and Startle Responses from Larval Zebrafish. Methods Mol Biol 2021; 2191:201-220. [PMID: 32865747 DOI: 10.1007/978-1-0716-0830-2_13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Zebrafish are an excellent model organism to study many aspects of vertebrate sensory encoding and behavior. Their escape responses begin with a C-shaped body bend followed by several swimming bouts away from the potentially threatening stimulus. This highly stereotyped motor behavior provides a model for studying startle reflexes and the neural circuitry underlying multisensory encoding and locomotion. Channelrhodopsin (ChR2) can be expressed in the lateral line and ear hair cells of zebrafish and can be excited in vivo to elicit these rapid forms of escape. Here we review our methods for studying transgenic ChR2-expressing zebrafish larvae, including screening for positive expression of ChR2 and recording field potentials and high-speed videos of optically evoked escape responses. We also highlight important features of the acquired data and provide a brief review of other zebrafish research that utilizes or has the potential to benefit from ChR2 and optogenetics.
Collapse
|
18
|
Subbiahanadar Chelladurai K, Selvan Christyraj JD, Azhagesan A, Paulraj VD, Jothimani M, Yesudhason BV, Chellathurai Vasantha N, Ganesan M, Rajagopalan K, Venkatachalam S, Benedict J, John Samuel JK, Selvan Christyraj JRS. Exploring the effect of UV-C radiation on earthworm and understanding its genomic integrity in the context of H2AX expression. Sci Rep 2020; 10:21005. [PMID: 33273505 PMCID: PMC7713072 DOI: 10.1038/s41598-020-77719-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 11/17/2020] [Indexed: 01/28/2023] Open
Abstract
Maintaining genomic stability is inevitable for organism survival and it is challenged by mutagenic agents, which include ultraviolet (UV) radiation. Whenever DNA damage occurs, it is sensed by DNA-repairing proteins and thereby performing the DNA-repair mechanism. Specifically, in response to DNA damage, H2AX is a key protein involved in initiating the DNA-repair processes. In this present study, we investigate the effect of UV-C on earthworm, Perionyx excavatus and analyzed the DNA-damage response. Briefly, we expose the worms to different doses of UV-C and find that worms are highly sensitive to UV-C. As a primary response, earthworms produce coelomic fluid followed by autotomy. However, tissue inflammation followed by death is observed when we expose worm to increased doses of UV-C. In particular, UV-C promotes damages in skin layers and on the contrary, it mediates the chloragogen and epithelial outgrowth in intestinal tissues. Furthermore, UV-C promotes DNA damages followed by upregulation of H2AX on dose-dependent manner. Our finding confirms DNA damage caused by UV-C is directly proportional to the expression of H2AX. In short, we conclude that H2AX is present in the invertebrate earthworm, which plays an evolutionarily conserved role in DNA damage event as like that in higher animals.
Collapse
Affiliation(s)
- Karthikeyan Subbiahanadar Chelladurai
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Jackson Durairaj Selvan Christyraj
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Ananthaselvam Azhagesan
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India ,grid.412813.d0000 0001 0687 4946Present Address: Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, 632014 Tamilnadu India
| | - Vennila Devi Paulraj
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Muralidharan Jothimani
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India ,grid.411312.40000 0001 0363 9238Present Address: Department of Bioinformatics, Science Campus, Alagappa University, Karaikudi, 630004 Tamilnadu India
| | - Beryl Vedha Yesudhason
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Niranjan Chellathurai Vasantha
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Mijithra Ganesan
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Kamarajan Rajagopalan
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Saravanakumar Venkatachalam
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Johnson Benedict
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| | - Jemima Kamalapriya John Samuel
- grid.252262.30000 0001 0613 6919Department of Biotechnology, Anna University of Technology, Tiruchirappalli, 620024 Tamilnadu India
| | - Johnson Retnaraj Samuel Selvan Christyraj
- grid.412427.60000 0004 1761 0622Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119 Tamilnadu India
| |
Collapse
|
19
|
Colored visual stimuli evoke spectrally tuned neuronal responses across the central nervous system of zebrafish larvae. BMC Biol 2020; 18:172. [PMID: 33243249 PMCID: PMC7694941 DOI: 10.1186/s12915-020-00903-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 10/19/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Visually guided behaviors such as optomotor and optokinetic responses, phototaxis, and prey capture are crucial for survival in zebrafish and become apparent after just a few days of development. Color vision, which in zebrafish is based on a spatially anisotropic tetrachromatic retina, provides an additional important component of world representation driving fundamental larval behaviors. However, little is known about the central nervous system (CNS) circuitry underlying color vision processing downstream of the retina, and its activity correlates with behavior. Here, we used the transparent larva of zebrafish to image CNS neurons and their activity in response to colored visual stimuli. RESULTS To investigate the processing of chromatic information in the zebrafish larva brain, we mapped with cellular resolution, spectrally responsive neurons in the larva encephalon and spinal cord. We employed the genetically encoded calcium indicator GCaMP6s and two-photon microscopy to image the neuronal activity while performing visual stimulation with spectrally distinct stimuli at wavelengths matching the absorption peaks of the four zebrafish cone types. We observed the presence of a high number of wavelength-selective neurons not only in the optic tectum, but also in all other regions of the CNS, demonstrating that the circuitry involved in processing spectral information and producing color-selective responses extends to the whole CNS. CONCLUSIONS Our measurements provide a map of neurons involved in color-driven responses, revealing that spectral information spreads in all regions of the CNS. This suggests the underlying complexity of the circuits involved and opens the way to their detailed future investigation.
Collapse
|
20
|
Sha F, Abdelfattah AS, Patel R, Schreiter ER. Erasable labeling of neuronal activity using a reversible calcium marker. eLife 2020; 9:57249. [PMID: 32931424 PMCID: PMC7492087 DOI: 10.7554/elife.57249] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 08/28/2020] [Indexed: 12/11/2022] Open
Abstract
Understanding how the brain encodes and processes information requires the recording of neural activity that underlies different behaviors. Recent efforts in fluorescent protein engineering have succeeded in developing powerful tools for visualizing neural activity, in general by coupling neural activity to different properties of a fluorescent protein scaffold. Here, we take advantage of a previously unexploited class of reversibly switchable fluorescent proteins to engineer a new type of calcium sensor. We introduce rsCaMPARI, a genetically encoded calcium marker engineered from a reversibly switchable fluorescent protein that enables spatiotemporally precise marking, erasing, and remarking of active neuron populations under brief, user-defined time windows of light exposure. rsCaMPARI photoswitching kinetics are modulated by calcium concentration when illuminating with blue light, and the fluorescence can be reset with violet light. We demonstrate the utility of rsCaMPARI for marking and remarking active neuron populations in freely swimming zebrafish.
Collapse
Affiliation(s)
- Fern Sha
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, United States
| | - Ahmed S Abdelfattah
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, United States
| | - Ronak Patel
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, United States
| | - Eric R Schreiter
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, United States
| |
Collapse
|
21
|
Hunt JE, Bruno JR, Pratt KG. An Innate Color Preference Displayed by Xenopus Tadpoles Is Persistent and Requires the Tegmentum. Front Behav Neurosci 2020; 14:71. [PMID: 32477078 PMCID: PMC7235192 DOI: 10.3389/fnbeh.2020.00071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 04/20/2020] [Indexed: 11/26/2022] Open
Abstract
Many animals, especially those that develop externally, are equipped with innate color preferences that promote survival. For example, Xenopus tadpoles are known to phototax most robustly towards mid-spectrum (“green”) wavelengths of light while avoiding shorter (“blue”) wavelengths. The innate preference to phototax towards green likely promotes survival by guiding the tadpoles to green aquatic plants—their source of both food and safety. Here, we characterize the dynamics and circuitry that give rise to this intriguing hard-wired behavior. Using a novel open-field experimental paradigm we found that free-swimming tadpoles indeed spend most of their time in the green portion of the test dish, whether green is pitted against white (brighter than green) or black (darker than green). This preference was modest yet incredibly persistent over time, which, according to the shell game model of predator-prey interactions, minimizes being found by the predator. Furthermore, we found that this innate preference for the color green was experience-independent, and manifested mainly via profoundly slower swimming speeds while in the green region of the test dish. Ablation experiments showed that, at the circuit level, the color-guided swimming behavior requires the tegmentum, but not the optic tectum (OT). Lastly, we determined that exposing tadpoles to the selective serotonin reuptake inhibitor (SSRI) trazodone switched the tadpoles’ preference from color-based to luminance-based, implicating two distinct visual circuits in the tadpole, one that is associated with color-driven behaviors, another associated with luminance-driven behaviors.
Collapse
Affiliation(s)
- Jasper Elan Hunt
- Department of Zoology and Physiology and Program in Neuroscience, University of Wyoming, Laramie, WY, United States.,Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - John Rudolph Bruno
- Department of Zoology and Physiology and Program in Neuroscience, University of Wyoming, Laramie, WY, United States
| | - Kara Geo Pratt
- Department of Zoology and Physiology and Program in Neuroscience, University of Wyoming, Laramie, WY, United States
| |
Collapse
|
22
|
Complexity and plasticity in honey bee phototactic behaviour. Sci Rep 2020; 10:7872. [PMID: 32398687 PMCID: PMC7217928 DOI: 10.1038/s41598-020-64782-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 04/21/2020] [Indexed: 11/28/2022] Open
Abstract
The ability to move towards or away from a light source, namely phototaxis, is essential for a number of species to find the right environmental niche and may have driven the appearance of simple visual systems. In this study we ask if the later evolution of more complex visual systems was accompanied by a sophistication of phototactic behaviour. The honey bee is an ideal model organism to tackle this question, as it has an elaborate visual system, demonstrates exquisite abilities for visual learning and performs phototaxis. Our data suggest that in this insect, phototaxis has wavelength specific properties and is a highly dynamical response including multiple decision steps. In addition, we show that previous experience with a light (through exposure or classical aversive conditioning) modulates the phototactic response. This plasticity is dependent on the wavelength used, with blue being more labile than green or ultraviolet. Wavelength, intensity and past experience are integrated into an overall valence for each light that determines phototactic behaviour in honey bees. Thus, our results support the idea that complex visual systems allow sophisticated phototaxis. Future studies could take advantage of these findings to better understand the neuronal circuits underlying this processing of the visual information.
Collapse
|
23
|
Franke K, Maia Chagas A, Zhao Z, Zimmermann MJY, Bartel P, Qiu Y, Szatko KP, Baden T, Euler T. An arbitrary-spectrum spatial visual stimulator for vision research. eLife 2019; 8:e48779. [PMID: 31545172 PMCID: PMC6783264 DOI: 10.7554/elife.48779] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/20/2019] [Indexed: 01/05/2023] Open
Abstract
Visual neuroscientists require accurate control of visual stimulation. However, few stimulator solutions simultaneously offer high spatio-temporal resolution and free control over the spectra of the light sources, because they rely on off-the-shelf technology developed for human trichromatic vision. Importantly, consumer displays fail to drive UV-shifted short wavelength-sensitive photoreceptors, which strongly contribute to visual behaviour in many animals, including mice, zebrafish and fruit flies. Moreover, many non-mammalian species feature more than three spectral photoreceptor types. Here, we present a flexible, spatial visual stimulator with up to six arbitrary spectrum chromatic channels. It combines a standard digital light processing engine with open source hard- and software that can be easily adapted to the experimentalist's needs. We demonstrate the capability of this general visual stimulator experimentally in the in vitro mouse retinal whole-mount and the in vivo zebrafish. With this work, we intend to start a community effort of sharing and developing a common stimulator design for vision research.
Collapse
Affiliation(s)
- Katrin Franke
- Institute for Ophthalmic ResearchUniversity of TübingenTübingenGermany
- Bernstein Center for Computational NeuroscienceUniversity of TübingenTübingenGermany
| | - André Maia Chagas
- Institute for Ophthalmic ResearchUniversity of TübingenTübingenGermany
- Center for Integrative NeuroscienceUniversity of TübingenTübingenGermany
- Sussex Neuroscience, School of Life SciencesUniversity of SussexFalmerUnited Kingdom
| | - Zhijian Zhao
- Institute for Ophthalmic ResearchUniversity of TübingenTübingenGermany
- Center for Integrative NeuroscienceUniversity of TübingenTübingenGermany
| | - Maxime JY Zimmermann
- Sussex Neuroscience, School of Life SciencesUniversity of SussexFalmerUnited Kingdom
| | - Philipp Bartel
- Sussex Neuroscience, School of Life SciencesUniversity of SussexFalmerUnited Kingdom
| | - Yongrong Qiu
- Institute for Ophthalmic ResearchUniversity of TübingenTübingenGermany
- Center for Integrative NeuroscienceUniversity of TübingenTübingenGermany
| | - Klaudia P Szatko
- Institute for Ophthalmic ResearchUniversity of TübingenTübingenGermany
- Bernstein Center for Computational NeuroscienceUniversity of TübingenTübingenGermany
| | - Tom Baden
- Institute for Ophthalmic ResearchUniversity of TübingenTübingenGermany
- Sussex Neuroscience, School of Life SciencesUniversity of SussexFalmerUnited Kingdom
| | - Thomas Euler
- Institute for Ophthalmic ResearchUniversity of TübingenTübingenGermany
- Bernstein Center for Computational NeuroscienceUniversity of TübingenTübingenGermany
- Center for Integrative NeuroscienceUniversity of TübingenTübingenGermany
| |
Collapse
|
24
|
Wee CL, Nikitchenko M, Wang WC, Luks-Morgan SJ, Song E, Gagnon JA, Randlett O, Bianco IH, Lacoste AMB, Glushenkova E, Barrios JP, Schier AF, Kunes S, Engert F, Douglass AD. Zebrafish oxytocin neurons drive nocifensive behavior via brainstem premotor targets. Nat Neurosci 2019; 22:1477-1492. [PMID: 31358991 PMCID: PMC6820349 DOI: 10.1038/s41593-019-0452-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 06/18/2019] [Indexed: 01/06/2023]
Abstract
Animals have evolved specialized neural circuits to defend themselves from pain- and injury-causing stimuli. Using a combination of optical, behavioral and genetic approaches in the larval zebrafish, we describe a novel role for hypothalamic oxytocin (OXT) neurons in the processing of noxious stimuli. In vivo imaging revealed that a large and distributed fraction of zebrafish OXT neurons respond strongly to noxious inputs, including the activation of damage-sensing TRPA1 receptors. OXT population activity reflects the sensorimotor transformation of the noxious stimulus, with some neurons encoding sensory information and others correlating more strongly with large-angle swims. Notably, OXT neuron activation is sufficient to generate this defensive behavior via the recruitment of brainstem premotor targets, whereas ablation of OXT neurons or loss of the peptide attenuates behavioral responses to TRPA1 activation. These data highlight a crucial role for OXT neurons in the generation of appropriate defensive responses to noxious input.
Collapse
Affiliation(s)
- Caroline L Wee
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
- Program in Neuroscience, Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Maxim Nikitchenko
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Wei-Chun Wang
- Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT, USA
| | - Sasha J Luks-Morgan
- Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT, USA
| | - Erin Song
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - James A Gagnon
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
- Department of Biology, University of Utah, Salt Lake City, UT, USA
| | - Owen Randlett
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Isaac H Bianco
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - Alix M B Lacoste
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Elena Glushenkova
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Joshua P Barrios
- Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT, USA
| | - Alexander F Schier
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
- Center for Brain Science, Harvard University, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- FAS Center for Systems Biology, Harvard University, Cambridge, MA, USA
| | - Samuel Kunes
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Florian Engert
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA.
| | - Adam D Douglass
- Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT, USA.
| |
Collapse
|
25
|
Lee HB, Schwab TL, Sigafoos AN, Gauerke JL, Krug RG, Serres MR, Jacobs DC, Cotter RP, Das B, Petersen MO, Daby CL, Urban RM, Berry BC, Clark KJ. Novel zebrafish behavioral assay to identify modifiers of the rapid, nongenomic stress response. GENES, BRAIN, AND BEHAVIOR 2019; 18:e12549. [PMID: 30588759 PMCID: PMC6446827 DOI: 10.1111/gbb.12549] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/30/2018] [Accepted: 12/18/2018] [Indexed: 12/23/2022]
Abstract
When vertebrates face acute stressors, their bodies rapidly undergo a repertoire of physiological and behavioral adaptations, which is termed the stress response. Rapid changes in heart rate and blood glucose levels occur via the interaction of glucocorticoids and their cognate receptors following hypothalamic-pituitary-adrenal axis activation. These physiological changes are observed within minutes of encountering a stressor and the rapid time domain rules out genomic responses that require gene expression changes. Although behavioral changes corresponding to physiological changes are commonly observed, it is not clearly understood to what extent hypothalamic-pituitary-adrenal axis activation dictates adaptive behavior. We hypothesized that rapid locomotor response to acute stressors in zebrafish requires hypothalamic-pituitary-interrenal (HPI) axis activation. In teleost fish, interrenal cells are functionally homologous to the adrenocortical layer. We derived eight frameshift mutants in genes involved in HPI axis function: two mutants in exon 2 of mc2r (adrenocorticotropic hormone receptor), five in exon 2 or 5 of nr3c1 (glucocorticoid receptor [GR]) and two in exon 2 of nr3c2 (mineralocorticoid receptor [MR]). Exposing larval zebrafish to mild environmental stressors, acute changes in salinity or light illumination, results in a rapid locomotor response. We show that this locomotor response requires a functioning HPI axis via the action of mc2r and the canonical GR encoded by nr3c1 gene, but not MR (nr3c2). Our rapid behavioral assay paradigm based on HPI axis biology can be used to screen for genetic and environmental modifiers of the hypothalamic-pituitary-adrenal axis and to investigate the effects of corticosteroids and their cognate receptor interactions on behavior.
Collapse
Affiliation(s)
- Han B. Lee
- Neuroscience Graduate ProgramMayo Clinic Graduate School of Biomedical SciencesRochesterMinnesota
| | - Tanya L. Schwab
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Ashley N. Sigafoos
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Jennifer L. Gauerke
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Randall G. Krug
- Neuroscience Graduate ProgramMayo Clinic Graduate School of Biomedical SciencesRochesterMinnesota
| | - MaKayla R. Serres
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Dakota C. Jacobs
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Ryan P. Cotter
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Biswadeep Das
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Morgan O. Petersen
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Camden L. Daby
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Rhianna M. Urban
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Bethany C. Berry
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| | - Karl J. Clark
- Neuroscience Graduate ProgramMayo Clinic Graduate School of Biomedical SciencesRochesterMinnesota
- Department of Biochemistry and Molecular BiologyMayo ClinicRochesterMinnesota
| |
Collapse
|
26
|
Yang W, Meng Y, Li D, Wen Q. Visual Contrast Modulates Operant Learning Responses in Larval Zebrafish. Front Behav Neurosci 2019; 13:4. [PMID: 30733672 PMCID: PMC6353835 DOI: 10.3389/fnbeh.2019.00004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 01/07/2019] [Indexed: 12/24/2022] Open
Abstract
The larval zebrafish is a promising vertebrate model organism to study neural mechanisms underlying learning and memory due to its small brain and rich behavioral repertoire. Here, we report on a high-throughput operant conditioning system for zebrafish larvae, which can simultaneously train 12 fish to associate a visual conditioned pattern with electroshocks. We find that the learning responses can be enhanced by the visual contrast, not the spatial features of the conditioned patterns, highlighted by several behavioral metrics. By further characterizing the learning curves as well as memory extinction, we demonstrate that the percentage of learners and the memory length increase as the conditioned pattern becomes darker. Finally, little difference in operant learning responses was found between AB wild-type fish and elavl3:H2B-GCaMP6f transgenic fish.
Collapse
Affiliation(s)
- Wenbin Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Integrative Imaging, School of Life Sciences, University of Science and Technology of China, Hefei, China
- Chinese Academy of Sciences Key Laboratory of Brain Function and Disease, Hefei, China
| | - Yutong Meng
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Integrative Imaging, School of Life Sciences, University of Science and Technology of China, Hefei, China
- Chinese Academy of Sciences Key Laboratory of Brain Function and Disease, Hefei, China
| | - Danyang Li
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Integrative Imaging, School of Life Sciences, University of Science and Technology of China, Hefei, China
- Chinese Academy of Sciences Key Laboratory of Brain Function and Disease, Hefei, China
| | - Quan Wen
- Hefei National Laboratory for Physical Sciences at the Microscale, Center for Integrative Imaging, School of Life Sciences, University of Science and Technology of China, Hefei, China
- Chinese Academy of Sciences Key Laboratory of Brain Function and Disease, Hefei, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| |
Collapse
|
27
|
Angueyra JM, Kindt KS. Leveraging Zebrafish to Study Retinal Degenerations. Front Cell Dev Biol 2018; 6:110. [PMID: 30283779 PMCID: PMC6156122 DOI: 10.3389/fcell.2018.00110] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 08/20/2018] [Indexed: 12/11/2022] Open
Abstract
Retinal degenerations are a heterogeneous group of diseases characterized by death of photoreceptors and progressive loss of vision. Retinal degenerations are a major cause of blindness in developed countries (Bourne et al., 2017; De Bode, 2017) and currently have no cure. In this review, we will briefly review the latest advances in therapies for retinal degenerations, highlighting the current barriers to study and develop therapies that promote photoreceptor regeneration in mammals. In light of these barriers, we present zebrafish as a powerful model to study photoreceptor regeneration and their integration into retinal circuits after regeneration. We outline why zebrafish is well suited for these analyses and summarize the powerful tools available in zebrafish that could be used to further uncover the mechanisms underlying photoreceptor regeneration and rewiring. In particular, we highlight that it is critical to understand how rewiring occurs after regeneration and how it differs from development. Insights derived from photoreceptor regeneration and rewiring in zebrafish may provide leverage to develop therapeutic targets to treat retinal degenerations.
Collapse
Affiliation(s)
- Juan M. Angueyra
- Retinal Neurophysiology Section, National Eye Institute, National Institutes of Health, Bethesda, MD, United States
| | - Katie S. Kindt
- Section on Sensory Cell Development and Function, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, United States
| |
Collapse
|
28
|
Symvoulidis P, Lauri A, Stefanoiu A, Cappetta M, Schneider S, Jia H, Stelzl A, Koch M, Perez CC, Myklatun A, Renninger S, Chmyrov A, Lasser T, Wurst W, Ntziachristos V, Westmeyer GG. NeuBtracker—imaging neurobehavioral dynamics in freely behaving fish. Nat Methods 2017; 14:1079-1082. [DOI: 10.1038/nmeth.4459] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 08/28/2017] [Indexed: 11/09/2022]
|