1
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Sadler DE, Watts PC, Uusi-Heikkilä S. Directional selection, not the direction of selection, affects telomere length and copy number at ribosomal RNA loci. Sci Rep 2024; 14:12162. [PMID: 38802448 PMCID: PMC11130246 DOI: 10.1038/s41598-024-63030-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024] Open
Abstract
Many fisheries exert directional selection on traits such as body size and growth rate. Whether directional selection impacts regions of the genome associated with traits related to growth is unknown. To address this issue, we characterised copy number variation in three regions of the genome associated with cell division, (1) telomeric DNA, (2) loci transcribed as ribosomal RNA (rDNA), and (3) mitochondrial DNA (mtDNA), in three selection lines of zebrafish reared at three temperatures (22 °C, 28 °C, and 34 °C). Selection lines differed in (1) the direction of selection (two lines experienced directional selection for large or small body size) and (2) whether they experienced any directional selection itself. Lines that had experienced directional selection were smaller, had lower growth rate, shorter telomeres, and lower rDNA copy number than the line that experiencing no directional selection. Neither telomere length nor rDNA copy number were affected by temperature. In contrast, mtDNA content increased at elevated temperature but did not differ among selection lines. Though directional selection impacts rDNA and telomere length, direction of such selection did not matter, whereas mtDNA acts as a stress marker for temperature. Future work should examine the consequences of these genomic changes in natural fish stocks.
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Affiliation(s)
- Daniel E Sadler
- Department of Biological and Environmental Science, University of Jyväskylä, 40014, Jyväskylä, Finland.
| | - Phillip C Watts
- Department of Biological and Environmental Science, University of Jyväskylä, 40014, Jyväskylä, Finland
| | - Silva Uusi-Heikkilä
- Department of Biological and Environmental Science, University of Jyväskylä, 40014, Jyväskylä, Finland
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2
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Hudock J, Kenney JW. Aging in zebrafish is associated with reduced locomotor activity and strain dependent changes in bottom dwelling and thigmotaxis. PLoS One 2024; 19:e0300227. [PMID: 38696419 PMCID: PMC11065237 DOI: 10.1371/journal.pone.0300227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/25/2024] [Indexed: 05/04/2024] Open
Abstract
Aging is associated with a wide range of physiological and behavioral changes in many species. Zebrafish, like humans, rodents, and birds, exhibits gradual senescence, and thus may be a useful model organism for identifying evolutionarily conserved mechanisms related to aging. Here, we compared behavior in the novel tank test of young (6-month-old) and middle aged (12-month-old) zebrafish from two strains (TL and TU) and both sexes. We find that this modest age difference results in a reduction in locomotor activity in male fish. We also found that background strain modulated the effects of age on predator avoidance behaviors related to anxiety: older female TL fish increased bottom dwelling whereas older male TU fish decreased thigmotaxis. Although there were no consistent effects of age on either short-term (within session) or long-term (next day) habituation to the novel tank, strain affected the habituation response. TL fish tended to increase their distance from the bottom of the tank whereas TU fish had no changes in bottom distance but instead tended to increase thigmotaxis. Our findings support the use of zebrafish for the study of how age affects locomotion and how genetics interacts with age and sex to alter exploratory and emotional behaviors in response to novelty.
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Affiliation(s)
- Jacob Hudock
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States of America
| | - Justin W. Kenney
- Department of Biological Sciences, Wayne State University, Detroit, MI, United States of America
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3
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Vasconcelos RO, Gordillo-Martinez F, Ramos A, Lau IH. Effects of Noise Exposure and Ageing on Anxiety and Social Behaviour in Zebrafish. BIOLOGY 2023; 12:1165. [PMID: 37759565 PMCID: PMC10525370 DOI: 10.3390/biology12091165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/11/2023] [Accepted: 08/11/2023] [Indexed: 09/29/2023]
Abstract
Noise pollution is creating a wide range of health problems related to physiological stress and anxiety that impact the social life of vertebrates, including humans. Ageing is known to be associated with changes in susceptibility to acoustic stimuli; however, the interaction between noise effects and senescence is not well understood. We tested the effects of 24 h continuous white noise (150 dB re 1 Pa) on both young adults and old zebrafish in terms of anxiety (novel tank diving test), social interactions (with mirror/conspecific attraction), and shoaling behaviour. Both noise and ageing induced higher anxiety responses in a novel environment. Since the old zebrafish showed longer bottom dwelling, acoustic treatment induced the opposite pattern with an initial increase in vertical exploration in the aged individuals. Both noise- and age-related anxiety responses were lowered when individuals were tested within a group. Regarding social interactions, both noise and ageing seemed to cause an increase in their proximity to a mirror. Although the results were not statistically significant, noise exposure seemed to further enhance conspecific attraction. Moreover, the interindividual distance within a shoal decreased with noise treatment in the aged individuals. This study is a first attempt to investigate the effects of both noise and ageing on zebrafish behaviour, suggesting the age-dependent physiological coping mechanisms associated with environmental stress.
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Affiliation(s)
- Raquel O. Vasconcelos
- Institute of Science and Environment, University of Saint Joseph, Macao, China
- MARE–Marine and Environmental Sciences Centre/ARNET—Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisbon, Portugal
- EPCV–Department of Life Sciences, Lusófona University, 1749-024 Lisbon, Portugal
| | | | - Andreia Ramos
- Institute of Science and Environment, University of Saint Joseph, Macao, China
| | - Ieng Hou Lau
- Institute of Science and Environment, University of Saint Joseph, Macao, China
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4
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Torres-Pérez JV, Anagianni S, Mech AM, Havelange W, García-González J, Fraser SE, Vallortigara G, Brennan CH. baz1b loss-of-function in zebrafish produces phenotypic alterations consistent with the domestication syndrome. iScience 2022; 26:105704. [PMID: 36582821 PMCID: PMC9793288 DOI: 10.1016/j.isci.2022.105704] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/15/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022] Open
Abstract
BAZ1B is a ubiquitously expressed nuclear protein with roles in chromatin remodeling, DNA replication and repair, and transcription. Reduced BAZ1B expression disrupts neuronal and neural crest development. Variation in the activity of BAZ1B has been proposed to underly morphological and behavioral aspects of domestication through disruption of neural crest development. Knockdown of baz1b in Xenopus embryos and Baz1b loss-of-function (LoF) in mice leads to craniofacial defects consistent with this hypothesis. We generated baz1b LoF zebrafish using CRISPR/Cas9 gene editing to test the hypothesis that baz1b regulates behavioral phenotypes associated with domestication in addition to craniofacial features. Zebrafish with baz1b LoF show mild underdevelopment at larval stages and distinctive craniofacial features later in life. Mutant zebrafish show reduced anxiety-associated phenotypes and an altered ontogeny of social behaviors. Thus, in zebrafish, developmental deficits in baz1b recapitulate both morphological and behavioral phenotypes associated with the domestication syndrome in other species.
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Affiliation(s)
- Jose V. Torres-Pérez
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
- Departament de Biologia Cel·lular, Biologia Funcional i Antropologia física, Fac. de CC. Biològiques, Universitat de València, C/ Dr. Moliner 50, Burjassot, València 46100, Spain
- Corresponding author
| | - Sofia Anagianni
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Aleksandra M. Mech
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
| | - William Havelange
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Judit García-González
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
- Department of Genetics and Genomic Sciences, Icahn School of Medicine, Mount Sinai, New York, NY 10029, USA
| | - Scott E. Fraser
- Michelson Center for Convergent Bioscience, University of Southern California, Los Angeles, CA, USA
| | | | - Caroline H. Brennan
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK
- Corresponding author
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5
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Pesavento S, Bilel S, Murari M, Gottardo R, Arfè R, Tirri M, Panato A, Tagliaro F, Marti M. Zebrafish larvae: A new model to study behavioural effects and metabolism of fentanyl, in comparison to a traditional mice model. MEDICINE, SCIENCE, AND THE LAW 2022; 62:188-198. [PMID: 35040690 DOI: 10.1177/00258024221074568] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In an effort to find alternatives to study in vivo the so-called New Psychoactive Substances (NPS), the present work was undertaken to investigate the use of zebrafish larvae as animal model in pharmaco-toxicology, providing behavioural and metabolism information. For this purpose, fentanyl, the progenitor of an extremely dangerous group of NPS, was administered at different doses to zebrafish larvae (1, 10, 50, 100 µM) in comparison to mice (0.1, 1, 6, 15 mg/kg), as a well-established animal model. A behavioural assay was performed at the time of the peak effect of fentanyl, showing that the results in larvae are consistent with those observed in mice. On the other hand, several morphological abnormalities (namely yolk sac edema, abnormal pericardial edema, jaw defect and spinal curvature) were found in larvae mostly at high fentanyl doses (50, 100 µM). Larva extract and mice urine were analyzed by using liquid chromatography coupled to high resolution mass spectrometry to identify the metabolic pathways of fentanyl. The main metabolites detected were norfentanyl and hydroxyfentanyl in both the tested models. In conclusion, the present study provides evidence that fentanyl effects on zebrafish larvae and metabolism are similar to rodents and consequently support the hypothesis of using zebrafish larvae as a suitable rapid screening tool to investigate new drugs, and particularly NPS.
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Affiliation(s)
- S Pesavento
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - S Bilel
- Department of Translational Medicine, Section of Legal Medicine and LTTA Centre, 9299University of Ferrara, Italy
| | - M Murari
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - R Gottardo
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - R Arfè
- Department of Translational Medicine, Section of Legal Medicine and LTTA Centre, 9299University of Ferrara, Italy
| | - M Tirri
- Department of Translational Medicine, Section of Legal Medicine and LTTA Centre, 9299University of Ferrara, Italy
| | - A Panato
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - F Tagliaro
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
- "World-Class Research Center" Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, Moscow, Russia
| | - M Marti
- Department of Translational Medicine, Section of Legal Medicine and LTTA Centre, 9299University of Ferrara, Italy
- Collaborative Center of the National Early Warning System, Department for Anti-Drug Policies, Presidency of the Council of Ministers, Italy
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6
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Tel2 regulates redifferentiation of bipotential progenitor cells via Hhex during zebrafish liver regeneration. Cell Rep 2022; 39:110596. [PMID: 35385752 DOI: 10.1016/j.celrep.2022.110596] [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: 10/14/2021] [Revised: 01/27/2022] [Accepted: 03/09/2022] [Indexed: 02/07/2023] Open
Abstract
Upon extensive hepatocyte loss or impaired hepatocyte proliferation, liver regeneration occurs via biliary epithelial cell (BEC) transdifferentiation, which includes dedifferentiation of BECs into bipotential progenitor cells (BP-PCs) and then redifferentiation of BP-PCs to nascent hepatocytes and BECs. This BEC-driven liver regeneration involves reactivation of hepatoblast markers, but the underpinning mechanisms and their effects on liver regeneration remain largely unknown. Using a zebrafish extensive hepatocyte ablation model, we perform an N-ethyl-N-nitrosourea (ENU) forward genetic screen and identify a liver regeneration mutant, liver logan (lvl), in which the telomere maintenance 2 (tel2) gene is mutated. During liver regeneration, the tel2 mutation specifically inhibits transcriptional activation of a hepatoblast marker, hematopoietically expressed homeobox (hhex), in BEC-derived cells, which blocks BP-PC redifferentiation. Mechanistic studies show that Tel2 associates with the hhex promoter region and promotes hhex transcription. Our results reveal roles of Tel2 in the BP-PC redifferentiation process of liver regeneration by activating hhex.
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7
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Leggieri A, García-González J, Torres-Perez JV, Havelange W, Hosseinian S, Mech AM, Keatinge M, Busch-Nentwich EM, Brennan CH. Ankk1 Loss of Function Disrupts Dopaminergic Pathways in Zebrafish. Front Neurosci 2022; 16:794653. [PMID: 35210987 PMCID: PMC8861280 DOI: 10.3389/fnins.2022.794653] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/12/2022] [Indexed: 11/13/2022] Open
Abstract
Ankyrin repeat and kinase domain containing 1 (ANKK1) is a member of the receptor-interacting protein serine/threonine kinase family, known to be involved in cell proliferation, differentiation and activation of transcription factors. Genetic variation within the ANKK1 locus is suggested to play a role in vulnerability to addictions. However, ANKK1 mechanism of action is still poorly understood. It has been suggested that ANKK1 may affect the development and/or functioning of dopaminergic pathways. To test this hypothesis, we generated a CRISPR-Cas9 loss of function ankk1 zebrafish line causing a 27 bp insertion that disrupts the ankk1 sequence introducing an early stop codon. We found that ankk1 transcript levels were significantly lower in ankk1 mutant (ankk127ins) fish compared to their wild type (ankk1+/+) siblings. In ankk1+/+ adult zebrafish brain, ankk1 protein was detected in isocortex, hippocampus, basolateral amygdala, mesencephalon, and cerebellum, resembling the mammalian distribution pattern. In contrast, ankk1 protein was reduced in the brain of ankk127ins/27ins fish. Quantitative polymerase chain reaction analysis revealed an increase in expression of drd2b mRNA in ankk127ins at both larval and adult stages. In ankk1+/+ adult zebrafish brain, drd2 protein was detected in cerebral cortex, cerebellum, hippocampus, and caudate homolog regions, resembling the pattern in humans. In contrast, drd2 expression was reduced in cortical regions of ankk127ins/27ins being predominantly found in the hindbrain. No differences in the number of cell bodies or axonal projections detected by anti-tyrosine hydroxylase immunostaining on 3 days post fertilization (dpf) larvae were found. Behavioral analysis revealed altered sensitivity to effects of both amisulpride and apomorphine on locomotion and startle habituation, consistent with a broad loss of both pre and post synaptic receptors. Ankk127ins mutants showed reduced sensitivity to the effect of the selective dopamine receptor antagonist amisulpride on locomotor responses to acoustic startle and were differentially sensitive to the effects of the non-selective dopamine agonist apomorphine on both locomotion and habituation. Taken together, our findings strengthen the hypothesis of a functional relationship between ANKK1 and DRD2, supporting a role for ANKK1 in the maintenance and/or functioning of dopaminergic pathways. Further work is needed to disentangle ANKK1’s role at different developmental stages.
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Affiliation(s)
- Adele Leggieri
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom
| | - Judit García-González
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jose V. Torres-Perez
- Department of Brain Sciences, UK Dementia Research Institute, Imperial College London, London, United Kingdom
| | - William Havelange
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom
| | - Saeedeh Hosseinian
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom
| | - Aleksandra M. Mech
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom
| | - Marcus Keatinge
- Centre for Discovery Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
| | - Elisabeth M. Busch-Nentwich
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom
- Department of Medicine, Cambridge Institute of Therapeutic Immunology and Infectious Disease, University of Cambridge, Cambridge, United Kingdom
| | - Caroline H. Brennan
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom
- *Correspondence: Caroline H. Brennan,
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8
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de Abreu MS, Demin KA, Giacomini ACVV, Amstislavskaya TG, Strekalova T, Maslov GO, Kositsin Y, Petersen EV, Kalueff AV. Understanding how stress responses and stress-related behaviors have evolved in zebrafish and mammals. Neurobiol Stress 2021; 15:100405. [PMID: 34722834 PMCID: PMC8536782 DOI: 10.1016/j.ynstr.2021.100405] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 09/12/2021] [Accepted: 09/27/2021] [Indexed: 12/27/2022] Open
Abstract
Stress response is essential for the organism to quickly restore physiological homeostasis disturbed by various environmental insults. In addition to well-established physiological cascades, stress also evokes various brain and behavioral responses. Aquatic animal models, including the zebrafish (Danio rerio), have been extensively used to probe pathobiological mechanisms of stress and stress-related brain disorders. Here, we critically discuss the use of zebrafish models for studying mechanisms of stress and modeling its disorders experimentally, with a particular cross-taxon focus on the potential evolution of stress responses from zebrafish to rodents and humans, as well as its translational implications.
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Affiliation(s)
- Murilo S de Abreu
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
- Laboratory of Cell and Molecular Biology and Neurobiology, Moscow Institute of Physics and Technology, Moscow, Russia
| | - Konstantin A Demin
- Institute of Experimental Medicine, Almazov National Medcial Research Center, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
- Granov Russian Scientific Research Center of Radiology and Surgical Technologies, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia
| | - Ana C V V Giacomini
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
- Postgraduate Program in Environmental Sciences, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Tamara G Amstislavskaya
- Scientific Research Institute of Physiology and Basic Medcicine, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
| | | | - Gleb O Maslov
- Neuroscience Program, Sirius University, Sochi, Russia
| | - Yury Kositsin
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
- Neuroscience Program, Sirius University, Sochi, Russia
| | - Elena V Petersen
- Laboratory of Cell and Molecular Biology and Neurobiology, Moscow Institute of Physics and Technology, Moscow, Russia
| | - Allan V Kalueff
- School of Pharmacy, Southwest University, Chongqing, China
- Ural Federal University, Ekaterinburg, Russia
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