ZebrafishPub Date : 2024-08-01Epub Date: 2024-05-29DOI: 10.1089/zeb.2024.0138
Lih Khiang Beh, Hongyuan Shen
{"title":"Genotyping Zebrafish Point Mutant by Allele-Specific Blocking PCR.","authors":"Lih Khiang Beh, Hongyuan Shen","doi":"10.1089/zeb.2024.0138","DOIUrl":"10.1089/zeb.2024.0138","url":null,"abstract":"<p><p>Genotyping zebrafish carrying wild-type, heterozygous, or homozygous copies of a mutant allele is often required for investigating gene specific functions, and is routinely performed to differentiate point mutants. In this study, we describe a modified allele-specific PCR method using an additional blocking primer to promote target sequence amplification while suppressing sequences with single mismatch. Using the <i>tp53<sup>m214k</sup></i> point mutant as an example, we show that wild-type, heterozygous, and homozygous zebrafish can be easily distinguished using this simple PCR method, which could be widely adapted for genotyping zebrafish with point mutations or small nucleotide insertions/deletions.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"297-299"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141162970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-08-01Epub Date: 2024-07-04DOI: 10.1089/zeb.2024.0140
Massimiliano Andreazzoli, Francesco Argenton, Cristiano Bertolucci, Dario Finazzi, Chiara Gabellini, Marina Mione, Anna Pistocchi, Massimo Santoro, Paolo Sordino, Vincenzo Cavalieri
{"title":"Zebrafish from the Alps to Sicily: The 4th Italian Zebrafish Meeting in Palermo.","authors":"Massimiliano Andreazzoli, Francesco Argenton, Cristiano Bertolucci, Dario Finazzi, Chiara Gabellini, Marina Mione, Anna Pistocchi, Massimo Santoro, Paolo Sordino, Vincenzo Cavalieri","doi":"10.1089/zeb.2024.0140","DOIUrl":"10.1089/zeb.2024.0140","url":null,"abstract":"<p><p>The 4th Italian Zebrafish Meeting took place in Palermo from February 7 to 9, 2024. The primary aim of this meeting was to bring together a diverse group of principal investigators, young researchers, facility managers, commercial vendors, and others to provide an important forum for presentation and discussion of the most innovative and exciting scientific research currently ongoing in Italy using the zebrafish model. Nonetheless, the meeting program has been conceived to allow the dissemination of cutting-edge scientific research across a wide range of topics and to shed light on its future directions, without geographical boundaries. Indeed, people from various parts of the world joined the meeting, and 210 participants presented their latest work in talks and posters. Importantly, the meeting had designated time to foster open scientific exchange and informal networking opportunities among participants of all career stages, thus allowing initiation of new collaborations and strengthening of existing partnerships. The meeting was a tremendous success as testified by the highest participation ever since the first meeting of the series in 2017, coupled with the highly positive satisfaction rating expressed by the attendants. The full program and detailed information about the meeting can be found on the dedicated website at https://itazebrafishmeeting.wixsite.com/izm2024.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"275-278"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-08-01Epub Date: 2023-12-28DOI: 10.1089/zeb.2023.0103
Tabea O C Moll, Steven A Farber
{"title":"Fish Playpens: Method for Raising Individual Juvenile Zebrafish on a Recirculating System for Studies Requiring Repeated Measures.","authors":"Tabea O C Moll, Steven A Farber","doi":"10.1089/zeb.2023.0103","DOIUrl":"10.1089/zeb.2023.0103","url":null,"abstract":"<p><p>Even though many experimental approaches benefit from tracking individual juvenile animals, there is yet to be a commercial zebrafish rack system designed to accomplish this task. Thus, we invented playpens, an acrylic, and screen container, to raise 12 individual zebrafish juveniles per standard 10 L tank on an existing recirculating fish system. During a week-long experiment, fish raised in playpens grow to the same size as conventionally raised juveniles.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"294-296"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11876806/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139050038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-06-01Epub Date: 2024-02-20DOI: 10.1089/zeb.2023.0100
Ligia Carla Balini, Carlos Alexandre Fernandes, Ana Luiza de Brito Portela-Castro, Rafael Fernando de Melo, Cláudio Henrique Zawadzki, Luciana Andreia Borin-Carvalho
{"title":"Initial Steps of XY Sex Chromosome Differentiation in the Armored Catfish <i>Hypostomus albopunctatus</i> (Siluriformes: Loricariidae) Revealed by Heterochromatin Accumulation.","authors":"Ligia Carla Balini, Carlos Alexandre Fernandes, Ana Luiza de Brito Portela-Castro, Rafael Fernando de Melo, Cláudio Henrique Zawadzki, Luciana Andreia Borin-Carvalho","doi":"10.1089/zeb.2023.0100","DOIUrl":"10.1089/zeb.2023.0100","url":null,"abstract":"<p><p>In fish species, heterochromatinization is one process that could trigger sex chromosome differentiation. The present article describes a nascent XX/XY sex chromosome system evidenced by heterochromatin accumulation and microsatellite (GATA)<sub>8</sub> in <i>Hypostomus albopunctatus</i> from two populations of the Paraná River basin. The specimens of <i>H. albopunctatus</i> from the Campo and Bossi Rivers share the same karyotype. The species exhibits 74 chromosomes (8m+14sm +16st +36a, fundamental number = 112). The C-banding technique suggests male heterogamety in <i>H. albopunctatus</i>, where the Y-chromosome is morphologically like the X-chromosome but differs from it for having long arms that are entirely heterochromatic. Double fluorescence <i>in situ</i> hybridization (FISH) with 18S and 5S rDNA probes confirmed the Ag-nucleolus organizer region sites in a single pair for both populations, and minor rDNA clusters showed interpopulational variation. FISH with the microsatellite (GATA)<sub>8</sub> probe showed a dispersed pattern in the karyotype, accumulating these sequences of sex chromosomes of both populations. FISH with microsatellite (CGC)<sub>10</sub> probe showed interpopulational variation. The absence of differentiated sex chromosomes in <i>H. albopunctatus</i> is described previously, and a new variant is documented herein where XY chromosomes can be seen in an early stage of differentiation.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"265-273"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139935017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-06-01Epub Date: 2024-02-20DOI: 10.1089/zeb.2023.0030
Katherine M Silvius, Genevieve C Kendall
{"title":"A Robust Closed-Tube Method for Resolving <i>tp53</i><sup>M214K</sup> Genotypes.","authors":"Katherine M Silvius, Genevieve C Kendall","doi":"10.1089/zeb.2023.0030","DOIUrl":"10.1089/zeb.2023.0030","url":null,"abstract":"<p><p>The <i>tp53</i><sup>M214K</sup> zebrafish mutant is a versatile platform with which to model a diverse spectrum of human diseases. However, currently available genotyping methods for this mutant require lengthy hands-on processes such as restriction digests and outsourced Sanger sequencing. To address this deficiency, we leveraged high-resolution melting analysis technology in conjunction with a parallel, in-tandem wild-type spike-in approach to develop a robust genotyping protocol capable of discriminating <i>tp53</i><sup>M214K</sup> zygosity. In this study, we describe our method in detail. We anticipate that our genotyping protocol will benefit researchers utilizing the <i>tp53</i><sup>M214K</sup> zebrafish mutant by offering reliable results with a shorter turnaround time, lower personnel involvement, and higher throughput than traditional methods, thereby decreasing the burden of genotyping and maximizing research efficiency.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"250-254"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11296207/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139935016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-06-01Epub Date: 2024-02-14DOI: 10.1089/zeb.2023.0105
Aubrey E Manning, Hannah Grunwald, Rachel Moran, Roberto Rodriguez-Morales, Amanda K Powers, Suzanne McGaugh, Johanna E Kowalko
{"title":"Defining the Unseen: Population-Specific Markers for <i>Astyanax mexicanus</i> Blind Cavefish.","authors":"Aubrey E Manning, Hannah Grunwald, Rachel Moran, Roberto Rodriguez-Morales, Amanda K Powers, Suzanne McGaugh, Johanna E Kowalko","doi":"10.1089/zeb.2023.0105","DOIUrl":"10.1089/zeb.2023.0105","url":null,"abstract":"<p><p><i>Astyanax mexicanus</i> is an emerging model system used to study development, evolution, and behavior of multiple cavefish populations that have repeatedly evolved from conspecific surface fish. Although surface and cavefish live and breed in the laboratory, there are no rapid methods for distinguishing between different cavefish populations. We present 2 methods for genotyping fish for a total of 16 population-specific markers using methods that are easy and inexpensive to implement in a basic molecular biology laboratory. This resource will help researchers maintain independent stocks within the laboratory and distinguish between fish from different populations.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"255-258"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11301698/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139737046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-06-01Epub Date: 2024-03-04DOI: 10.1089/zeb.2023.0102
Eric Paulissen, Benjamin L Martin
{"title":"A Chemically Inducible Muscle Ablation System for the Zebrafish.","authors":"Eric Paulissen, Benjamin L Martin","doi":"10.1089/zeb.2023.0102","DOIUrl":"10.1089/zeb.2023.0102","url":null,"abstract":"<p><p>An effective method for tissue-specific ablation in zebrafish is the nitroreductase (NTR)/metronidazole (MTZ) system. Expressing bacterial NTR in the presence of nitroimidazole compounds causes apoptotic cell death, which can be useful for understanding many biological processes. However, this requires tissue-specific expression of the NTR enzyme, and many tissues have yet to be targeted with transgenic lines that express NTR. We generated a transgenic zebrafish line expressing NTR in differentiated skeletal muscle. Treatment of embryos with MTZ caused muscle specific cell ablation. We demonstrate this line can be used to monitor muscle regeneration in whole embryos and in transplanted transgenic cells.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"243-249"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11301710/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140023896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-06-01Epub Date: 2024-02-20DOI: 10.1089/zeb.2023.0101
Ana Paula Apolinário da Silva, João Xavier da Silva Neto, José Ytalo Gomes da Silva, Ana Lorena Pereira Bezerra, Bruno Bezerra da Silva, Maria Izabel Florindo Guedes
{"title":"Modified Procedure for Simple and Rapid Collection of Zebrafish Fluid Samples for Biochemical Analyses.","authors":"Ana Paula Apolinário da Silva, João Xavier da Silva Neto, José Ytalo Gomes da Silva, Ana Lorena Pereira Bezerra, Bruno Bezerra da Silva, Maria Izabel Florindo Guedes","doi":"10.1089/zeb.2023.0101","DOIUrl":"10.1089/zeb.2023.0101","url":null,"abstract":"<p><p>This study addresses the challenge of collecting blood samples from zebrafish for biochemical analysis. Traditional methods are cumbersome due to low blood flow and rapid coagulation. Based on a previously published technique, we simplified the process by applying an anticoagulant solution directly to the incision site. The modified protocol involves immersing the fish in an ice bath, making a cross-sectional incision, and immediately applying anticoagulant solution. Centrifugation of the specimens provides a streamlined and efficient approach to zebrafish fluid sample collection, compatible with classic biochemical marker analyses.</p>","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":" ","pages":"259-264"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139935018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-04-12DOI: 10.1089/zeb.2023.0098
Adrian Romero, Armando Sanchez, Jocelyn D Jones, Kristel Ledesma, M. El-Halawany, Ayman K Hamouda, Brent R Bill
{"title":"Optimization of Zebrafish Larvae 6-OHDA Exposure for Neurotoxin Induced Dopaminergic Marker Reduction.","authors":"Adrian Romero, Armando Sanchez, Jocelyn D Jones, Kristel Ledesma, M. El-Halawany, Ayman K Hamouda, Brent R Bill","doi":"10.1089/zeb.2023.0098","DOIUrl":"https://doi.org/10.1089/zeb.2023.0098","url":null,"abstract":"Parkinson's disease (PD) is a neurodegenerative disorder that is clinically assessed by motor symptoms associated with the loss of midbrain dopaminergic neurons affecting the quality of life for over 8.5 million people worldwide. The neurotoxin 6-hydroxydopamine (6-OHDA) has been used to chemically induce a PD-like state in zebrafish larvae by several laboratories; however, highly variable concentration, methodology, and reagents have resulted in conflicting results suggesting a need to investigate these issues of reproducibility. We propose a protocol that addresses the differences in methodology and induces changes in 6 days postfertilization (dpf) larvae utilizing a 24-h exposure at 3 dpf with 30 μM 6-OHDA. Despite ∼50% lethality, no morphological or development differences in surviving fish are observed. Definition of our model is defined by downregulation of the expression of th1 by reverse transcriptase-quantitative polymerase chain reaction, a marker for dopaminergic neurons and a reduction in movement. Additionally, we observed a downregulation of pink1 and an upregulation of sod1 and sod2, indicators of mitochondrial dysfunction and response to reactive oxygen species, respectively.","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":"9 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140712071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ZebrafishPub Date : 2024-04-12DOI: 10.1089/zeb.2023.0088
Fajar Sofyantoro, Nur Indah Septriani, D. S. Yudha, Ega Adhi Wicaksono, D. Priyono, Wahyu Aristyaning Putri, Alfian Primahesa, Anita Restu Puji Raharjeng, Y. A. Purwestri, T. R. Nuringtyas
{"title":"Zebrafish as Versatile Model for Assessing Animal Venoms and Toxins: Current Applications and Future Prospects.","authors":"Fajar Sofyantoro, Nur Indah Septriani, D. S. Yudha, Ega Adhi Wicaksono, D. Priyono, Wahyu Aristyaning Putri, Alfian Primahesa, Anita Restu Puji Raharjeng, Y. A. Purwestri, T. R. Nuringtyas","doi":"10.1089/zeb.2023.0088","DOIUrl":"https://doi.org/10.1089/zeb.2023.0088","url":null,"abstract":"Animal venoms and toxins hold promise as sources of novel drug candidates, therapeutic agents, and biomolecules. To fully harness their potential, it is crucial to develop reliable testing methods that provide a comprehensive understanding of their effects and mechanisms of action. However, traditional rodent assays encounter difficulties in mimicking venom-induced effects in human due to the impractical venom dosage levels. The search for reliable testing methods has led to the emergence of zebrafish (Danio rerio) as a versatile model organism for evaluating animal venoms and toxins. Zebrafish possess genetic similarities to humans, rapid development, transparency, and amenability to high-throughput assays, making it ideal for assessing the effects of animal venoms and toxins. This review highlights unique attributes of zebrafish and explores their applications in studying venom- and toxin-induced effects from various species, including snakes, jellyfish, cuttlefish, anemones, spiders, and cone snails. Through zebrafish-based research, intricate physiological responses, developmental alterations, and potential therapeutic interventions induced by venoms are revealed. Novel techniques such as CRISPR/Cas9 gene editing, optogenetics, and high-throughput screening hold great promise for advancing venom research. As zebrafish-based insights converge with findings from other models, the comprehensive understanding of venom-induced effects continues to expand, guiding the development of targeted interventions and promoting both scientific knowledge and practical applications.","PeriodicalId":94273,"journal":{"name":"Zebrafish","volume":"126 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140708841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}