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Li C, Cai R, Shi W, Zhang H, Liu Z, Xie F, Chen Y, Hong Q. Comparative transcriptome analysis of ovaries and testes reveals sex-biased genes and pathways in zebrafish. Gene 2024; 901:148176. [PMID: 38242380 DOI: 10.1016/j.gene.2024.148176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/07/2024] [Accepted: 01/16/2024] [Indexed: 01/21/2024]
Abstract
Zebrafish (Danio rerio) is a widely recognized and extensively studied model organism in scientific research. The regulatory mechanism of gonadal development and differentiation of this species has aroused considerable attention. Nonetheless, the major sex-biased genes and pathways associated with gonadal development remain elusive. Therefore, to comprehend this intricate process, gonadal transcriptome sequencing was carried out to identify differentially expressed genes (DEGs) between the testes and ovaries of adult zebrafish. The preliminary assessment yielded a total of 23,529,272 and 23,521,368 clean reads from the cDNA libraries of ovaries and testes. Afterward, a comparative analysis of the transcriptome revealed 3,604 upregulated and 11,371 downregulated DEGs in the ovaries compared to the testes. Of these genes, 428 were exclusively expressed in females, while 3,516 were exclusively expressed in males. Additionally, further assessments were conducted to explore the functions associated with these DEGs in various biological processes. The data revealed their involvement in sex-biased pathways, such as progesterone-mediated oocyte maturation, oocyte meiosis, cytokine-cytokine receptor interaction, and cardiac muscle contraction. Finally, the expression levels of 14 sex-biased DEGs (cdc20, ccnb1, ypel3, chn1, bmp15, rspo1, tnfsf10, egfra, acta2, cox8a, gsdf, dmrt1, star, and cyp17a1) associated with the enriched pathways were subjected to further validation through qRT-PCR. The data acquired from these investigations offer valuable resources to support further exploration of the mechanisms governing sexual dimorphism and gonadal development in zebrafish.
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Affiliation(s)
- Cong Li
- Department of Hematology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Rui Cai
- School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Wenhui Shi
- School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Hao Zhang
- School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Zhuang Liu
- School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Fenfen Xie
- School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China.
| | - Yuanhua Chen
- School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China.
| | - Qiang Hong
- School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China.
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Oyarbide U, Shah AN, Staton M, Snyderman M, Sapra A, Calo E, Corey SJ. SBDS R126T rescues survival of sbds -/- zebrafish in a dose-dependent manner independently of Tp53. Life Sci Alliance 2023; 6:e202201856. [PMID: 37816584 PMCID: PMC10565674 DOI: 10.26508/lsa.202201856] [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: 11/25/2022] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/12/2023] Open
Abstract
Defects in ribosomal biogenesis profoundly affect organismal development and cellular function, and these ribosomopathies produce a variety of phenotypes. One ribosomopathy, Shwachman-Diamond syndrome (SDS) is characterized by neutropenia, pancreatic exocrine insufficiency, and skeletal anomalies. SDS results from biallelic mutations in SBDS, which encodes a ribosome assembly factor. Some individuals express a missense mutation, SBDS R126T , along with the common K62X mutation. We reported that the sbds-null zebrafish phenocopies much of SDS. We further showed activation of Tp53-dependent pathways before the fish died during the larval stage. Here, we expressed SBDS R126T as a transgene in the sbds -/- background. We showed that one copy of the SBDS R126T transgene permitted the establishment of maternal zygotic sbds-null fish which produced defective embryos with cdkn1a up-regulation, a Tp53 target involved in cell cycle arrest. None survived beyond 3 dpf. However, two copies of the transgene resulted in normal development and lifespan. Surprisingly, neutropenia persisted. The surviving fish displayed suppression of female sex differentiation, a stress response in zebrafish. To evaluate the role of Tp53 in the pathogenesis of sbds -/- fish phenotype, we bred the fish with a DNA binding deficient allele, tp53 M214K Expression of the loss-of-function tp53 M214K did not rescue neutropenia or survival in sbds-null zebrafish. Increased expression of cdkn1a was abrogated in the tp53 M214K/M214K ;sbds -/- fish. We conclude that the amount of SBDSR126T protein is important for development, inactivation of Tp53 fails to rescue neutropenia or survival in the sbds-null background, and cdkn1a up-regulation was dependent on WT tp53 We hypothesize that additional pathways are involved in the pathophysiology of SDS.
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Affiliation(s)
- Usua Oyarbide
- https://ror.org/03xjacd83 Departments of Cancer Biology and Pediatrics, Cleveland Clinic, Cleveland, OH, USA
| | - Arish N Shah
- Department of Biology and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Morgan Staton
- https://ror.org/03xjacd83 Departments of Cancer Biology and Pediatrics, Cleveland Clinic, Cleveland, OH, USA
| | - Matthew Snyderman
- https://ror.org/03xjacd83 Departments of Cancer Biology and Pediatrics, Cleveland Clinic, Cleveland, OH, USA
| | - Adya Sapra
- https://ror.org/03xjacd83 Departments of Cancer Biology and Pediatrics, Cleveland Clinic, Cleveland, OH, USA
| | - Eliezer Calo
- Department of Biology and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Seth J Corey
- https://ror.org/03xjacd83 Departments of Cancer Biology and Pediatrics, Cleveland Clinic, Cleveland, OH, USA
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Qiao K, Liang Z, Wang A, Wu Q, Yang S, Ma Y, Li S, Schiwy S, Jiang J, Zhou S, Ye Q, Hollert H, Gui W. Waterborne Tebuconazole Exposure Induces Male-Biased Sex Differentiation in Zebrafish ( Danio rerio) Larvae via Aromatase Inhibition. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16764-16778. [PMID: 37890152 DOI: 10.1021/acs.est.3c03181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/29/2023]
Abstract
Tebuconazole is a widely used fungicide for various crops that targets sterol 14-α-demethylase (CYP51) in fungi. However, attention has shifted to aromatase (CYP19) due to limited research indicating its reproductive impact on aquatic organisms. Herein, zebrafish were exposed to 0.5 mg/L tebuconazole at different developmental stages. The proportion of males increased significantly after long-term exposure during the sex differentiation phase (0-60, 5-60, and 19-60 days postfertilization (dpf)). Testosterone levels increased and 17β-estradiol and cyp19a1a expression levels decreased during the 5-60 dpf exposure, while the sex ratio was equally distributed on coexposure with 50 ng/L 17β-estradiol. Chemically activated luciferase gene expression bioassays determined that the male-biased sex differentiation was not caused by tebuconazole directly binding to sex hormone receptors. Protein expression and phosphorylation levels were specifically altered in the vascular endothelial growth factor signaling pathway despite excluding the possibility of tebuconazole directly interacting with kinases. Aromatase was selected for potential target analysis. Molecular docking and aromatase activity assays demonstrated the interactions between tebuconazole and aromatase, highlighting that tebuconazole poses a threat to fish populations by inducing a gender imbalance.
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Affiliation(s)
- Kun Qiao
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
- Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou 310058, P. R. China
- Department Evolutionary Ecology and Environmental Toxicology, Faculty Biological Sciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
| | - Zhuoying Liang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
| | - Aoxue Wang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
| | - Qiong Wu
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
- Patent Examination Cooperation (Henan) Center of the Patent Office, CNIPA, Zhengzhou 450046, P. R. China
| | - Siyu Yang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
| | - Yongfang Ma
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
| | - Shuying Li
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Zhejiang University, Hangzhou 310058, P. R. China
| | - Sabrina Schiwy
- Department Evolutionary Ecology and Environmental Toxicology, Faculty Biological Sciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
| | - Jinhua Jiang
- Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P. R. China
| | - Shengli Zhou
- Zhejiang Province Environmental Monitoring Center, Hangzhou 310012, P. R. China
| | - Qingfu Ye
- Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - Henner Hollert
- Department Evolutionary Ecology and Environmental Toxicology, Faculty Biological Sciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
- Department Environmental Media Related Ecotoxicology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, 57392 Schmallenberg, Germany
- LOEWE Centre for Translational Biodiversity Genomics (LOEWE-TBG), 60325 Frankfurt am Main, Germany
| | - Wenjun Gui
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, P. R. China
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Zhejiang University, Hangzhou 310058, P. R. China
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Long XB, Shi WJ, Yao CR, Li SY, Zhang JG, Lu ZJ, Ma DD, Jiang YX, Ying GG. Norethindrone suppress the germ cell development via androgen receptor resulting in male bias. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 261:106604. [PMID: 37311377 DOI: 10.1016/j.aquatox.2023.106604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 05/15/2023] [Accepted: 06/07/2023] [Indexed: 06/15/2023]
Abstract
Progestins are widely used and detected in surface waters, and can affect gonad development and sexual differentiation in fish. However, the toxicological mechanisms of sexual differentiation induced by progestins are not well understood. Here, we investigated the effects of norethindrone (NET) and androgen receptor (AR) antagonist flutamide (FLU) on gonadal differentiation in zebrafish from 21 dpf (days post-fertilization) to 49 dpf. The results showed that NET caused male bias, while FLU resulted in female bias at 49 dpf. The NET and FLU mixtures significantly decreased the percentage of males compared to the NET single exposure. Molecular docking analysis showed that FLU and NET had similar docking pocket and docking posture with AR resulting in competitively forming the hydrogen bond with Thr334 of AR. These results suggested that binding to AR was the molecular initiating event of sex differentiation induced by NET. Moreover, NET strongly decreased transcription of biomarker genes (dnd1, ddx4, dazl, piwil1 and nanos1) involved in germ cell development, while FLU significantly increased transcription of these target genes. There was an increase in the number of juvenile oocytes, which was consistent with the female bias in the combined groups. The bliss independence model analysis further showed that NET and FLU had antagonistic effect on transcription and histology during gonadal differentiation. Thus, NET suppressed the germ cell development via AR, resulting in male bias. Understanding the molecular initiation of sex differentiation in progestins is essential to provide a comprehensive biological basis for ecological risk assessment.
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Affiliation(s)
- Xiao-Bing Long
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Wen-Jun Shi
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
| | - Chong-Rui Yao
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Si-Ying Li
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Jin-Ge Zhang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Zhi-Jie Lu
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Dong-Dong Ma
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Yu-Xia Jiang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
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Wang F, Liu H, Liu F. Analysis of the effect of triclosan on gonadal differentiation of zebrafish based on metabolome. CHEMOSPHERE 2023; 331:138856. [PMID: 37149099 DOI: 10.1016/j.chemosphere.2023.138856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/08/2023]
Abstract
Although the previous research confirmed that triclosan (TCS) affects the female proportion at the early stage of zebrafish (Danio rerio) and has an estrogen effect, the mechanism by which TCS affects the sex differentiation of zebrafish is not entirely clear. In this study, zebrafish embryos were exposed to different concentrations of TCS (0, 2, 10, and 50 μg/L) for 50 consecutive days. The expression of sex differentiation related genes and metabolites were then determined in larvae using reverse transcription quantitative polymerase chain reaction (RT-qPCR) and Liquid Chromatography-Mass Spectrometer (LC-MS), respectively. TCS upregulated the expression of the sox9a, dmrt1a and amh genes, down-regulating the expression of wnt4a, cyp19a1b, cyp19a1a, and vtg2 gene. The overlapped classification of Significant Differential Metabolites (SDMs) between the control group and three TCS treated groups related to gonadal differentiation was Steroids and steroid derivatives, including 24 down-regulated SDMs. The enriched pathways related to gonadal differentiation were Steroid hormone biosynthesis, Retinol metabolism, Metabolism of xenobiotics by cytochrome P450, and Cortisol synthesis and secretion. Moreover, SDMs were significantly enriched in Steroid hormone biosynthesis in the 2 μg/L TCS group, which included Dihydrotestosterone, Cortisol, 11beta-hydroxyandrost-4-ene-3, 17-dione, 21-Hydroxypregnenolone, Androsterone, Androsterone glucuronide, Estriol, Estradiol, 19-Hydroxytestosterone, Cholesterol, Testosterone, and Cortisone acetate. Results showed that TCS affects the female proportion mainly through Steroid hormone biosynthesis, in which aromatase plays a key role in zebrafish. Retinol metabolism, metabolism of xenobiotics by cytochrome P450, and cortisol synthesis and secretion may also participate in TCS-mediated sex differentiation. These findings reveal the molecular mechanisms of TCS-induced sex differentiation, and provide theoretical guidance for the maintenance of water ecological balance.
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Affiliation(s)
- Fan Wang
- School of Biological Science, Luoyang Normal University, Luoyang, 471022, China.
| | - Haifang Liu
- School of Energy and Environment, Zhongyuan University of Technology, Zhengzhou, 450007, China
| | - Fei Liu
- School of Biological Science, Luoyang Normal University, Luoyang, 471022, China
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Ma X, Xiong J, Li H, Brooks BW, You J. Long-Term Exposure to Neonicotinoid Insecticide Acetamiprid at Environmentally Relevant Concentrations Impairs Endocrine Functions in Zebrafish: Bioaccumulation, Feminization, and Transgenerational Effects. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:12494-12505. [PMID: 36006007 DOI: 10.1021/acs.est.2c04014] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Neonicotinoid insecticides have attracted worldwide attention due to their ubiquitous occurrence and detrimental effects on aquatic organisms, yet their impacts on fish reproduction during long-term exposure remain unknown. Here, zebrafish (F0) were exposed to a neonicotinoid, acetamiprid, at 0.19-1637 μg/L for 154 d. Accumulation and biotransformation of acetamiprid were observed in adult fish, and the parent compound and its metabolite (acetamiprid-N-desmethyl) were transferred to their offspring. Acetamiprid caused slight survival reduction and significant feminization in F0 fish even at the lowest concentration. Hormone levels in F0 fish were remarkedly altered, that is, gonad 17β-estradiol (E2) significantly increased, while androstenedione decreased. The corresponding transcription of steroidogenic genes (ar, cyp19b, fshβ, gnrh2, gnrh3, and lhβ) were significantly upregulated in the brain and gonad of the females but downregulated in the males. The vtg1 gene expression in the liver of male fish was also upregulated. In addition to F0 fish, parental exposure to acetamiprid decreased hatchability and enhanced malformation of F1 embryos. Chronic exposure to acetamiprid at environmentally relevant concentrations altered hormone production and the related gene expression of the hypothalamic-pituitary-gonad (HPG) axis in a sex-dependent way, caused feminization and reproductive dysfunction in zebrafish, and impaired production and development of their offspring.
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Affiliation(s)
- Xue Ma
- Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Jingjing Xiong
- Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Huizhen Li
- Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Bryan W Brooks
- Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
- Department of Environmental Science, Institute of Biomedical Studies, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, Texas 76798, United States
| | - Jing You
- Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
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Paixão RV, Silva GF, Caetano AR, Cintra LC, Varela ES, O'Sullivan FLA. Phylogenomic and expression analysis of Colossoma macropomum cyp19a1a and cyp19a1b and their non-classical role in tambaqui sex differentiation. Gene 2022; 843:146795. [PMID: 35961435 DOI: 10.1016/j.gene.2022.146795] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 07/15/2022] [Accepted: 08/05/2022] [Indexed: 11/30/2022]
Abstract
The genes coding for Cytochrome P450 aromatase (cyp19a1a and cyp19a1b) and estrogen (E2) receptors (esr1, esr2a and esr2b) play a conserved role in ovarian differentiation and development among teleosts. Classically, the "gonad form" of aromatase, coded by the cyp19a1a, is responsible for the ovarian differentiation in genetic females via ligation and activation of the Esr, which mediates the endocrine and exocrine signaling to allow or block the establishment of the feminine phenotype. However, in neotropical species, studies on the molecular and endocrine processes involved in gonad differentiation as well as on the effects of sex modulators are recent and scarce. In this study, we combined in silico analysis, real-time quantitative PCR (qPCR) assay and quantification of E2 plasma levels of differentiating tambaqui (Colossoma macropomum) to unveil the roles of the paralogs cypa19a1a and cyp19a1b during sex differentiation. Although the synteny of each gene is very conserved among characids, the genomic environment displays striking differences in comparison to model teleost species, with many rearrangements in cyp19a1a and cyp19a1b adjacencies and transposable element traces in both regulatory regions. The high dissimilarity (DI) of SF-1 binding motifs in cyp19a1a (DI = 10.06 to 14.90 %) and cyp19a1b (DI = 8.41 to 13.50 %) regulatory region, respectively, may reflect in an alternative pathway in tambaqui. Indeed, while low transcription of cyp19a1a was detected prior to sex differentiation, the expression of cyp19a1b and esr2a presented a large variation at this phase, which could be associated with sex-specific differential expression. Histological analysis revealed that anti-estradiol treatments did not affect gonadal sex ratios, although Fadrozole (50 mg kg-1 of food) reduced E2 plasma levels (p < 0,005) as well cyp19a1a transcription; and tamoxifen (200 mg kg-1 of food) down regulated both cyp19a1a and cyp19a1b but did not influence E2 levels. Altogether, our results bring into light new insights about the evolutionary fate of cyp19a1 paralogs in neotropical fish, which may have generated uncommon roles for the gonadal and brain forms of cyp19a1 genes and the unexpected lack of effect of endocrine disruptors on tambaqui sexual differentiation.
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Affiliation(s)
- R V Paixão
- Universidade Federal do Amazonas (UFAM), Programa de Pós-graduação em Ciência Animal e Recursos Pesqueiros, Avenida Rodrigo Otávio, CEP: 69080-900, 6200 Manaus, AM, Brazil
| | - G F Silva
- Embrapa Amazônia Ocidental, Rodovia AM-010, Km 29, Caixa Postal 319, CEP: 69010-790, Brazil
| | - A R Caetano
- Embrapa Recursos Genéticos e Biotecnologia, Final Av. W/5 Norte, C.P. 02372, CEP 70770-917, Brasília, DF, Brazil
| | - L C Cintra
- Embrapa Agricultura Digital, Avenida André Tosselo, 209, Cidade Universitária, CEP: 13083-886, Campinas, SP, Brazil
| | - E S Varela
- Embrapa Pesca e Aquicultura, Av. NS 10, cruzamento com a Av. LO 18 Sentido Norte Loteamento - Água Fria, Palmas, TO 77008-900, Brazil
| | - F L A O'Sullivan
- Embrapa Amazônia Ocidental, Rodovia AM-010, Km 29, Caixa Postal 319, CEP: 69010-790, Brazil.
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Abstract
In this systematic review, we highlight the differences between the male and female zebrafish brains to understand their differentiation and their use in studying sex-specific neurological diseases. Male and female brains display subtle differences at the cellular level which may be important in driving sex-specific signaling. Sex differences in the brain have been observed in humans as well as in non-human species. However, the molecular mechanisms of brain sex differentiation remain unclear. The classical model of brain sex differentiation suggests that the steroid hormones derived from the gonads are the primary determinants in establishing male and female neural networks. Recent studies indicate that the developing brain shows sex-specific differences in gene expression prior to gonadal hormone action. Hence, genetic differences may also be responsible for differentiating the brain into male and female types. Understanding the signaling mechanisms involved in brain sex differentiation could help further elucidate the sex-specific incidences of certain neurological diseases. The zebrafish model could be appropriate for enhancing our understanding of brain sex differentiation and the signaling involved in neurological diseases. Zebrafish brains show sex-specific differences at the hormonal level, and recent advances in RNA sequencing have highlighted critical sex-specific differences at the transcript level. The differences are also evident at the cellular and metabolite levels, which could be important in organizing sex-specific neuronal signaling. Furthermore, in addition to having one ortholog for 70% of the human gene, zebrafish also shares brain structural similarities with other higher eukaryotes, including mammals. Hence, deciphering brain sex differentiation in zebrafish will help further enhance the diagnostic and pharmacological intervention of neurological diseases.
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Zhang X, Wagner S, Holleley CE, Deakin JE, Matsubara K, Deveson IW, O'Meally D, Patel HR, Ezaz T, Li Z, Wang C, Edwards M, Graves JAM, Georges A. Sex-specific splicing of Z- and W-borne nr5a1 alleles suggests sex determination is controlled by chromosome conformation. Proc Natl Acad Sci U S A 2022; 119:e2116475119. [PMID: 35074916 PMCID: PMC8795496 DOI: 10.1073/pnas.2116475119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/03/2021] [Indexed: 11/18/2022] Open
Abstract
Pogona vitticeps has female heterogamety (ZZ/ZW), but the master sex-determining gene is unknown, as it is for all reptiles. We show that nr5a1 (Nuclear Receptor Subfamily 5 Group A Member 1), a gene that is essential in mammalian sex determination, has alleles on the Z and W chromosomes (Z-nr5a1 and W-nr5a1), which are both expressed and can recombine. Three transcript isoforms of Z-nr5a1 were detected in gonads of adult ZZ males, two of which encode a functional protein. However, ZW females produced 16 isoforms, most of which contained premature stop codons. The array of transcripts produced by the W-borne allele (W-nr5a1) is likely to produce truncated polypeptides that contain a structurally normal DNA-binding domain and could act as a competitive inhibitor to the full-length intact protein. We hypothesize that an altered configuration of the W chromosome affects the conformation of the primary transcript generating inhibitory W-borne isoforms that suppress testis determination. Under this hypothesis, the genetic sex determination (GSD) system of P. vitticeps is a W-borne dominant female-determining gene that may be controlled epigenetically.
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Affiliation(s)
- Xiuwen Zhang
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Susan Wagner
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Clare E Holleley
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
- Australian National Wildlife Collection, Commonwealth Scientific and Industrial Research Organisation, Crace, ACT 2911, Australia
| | - Janine E Deakin
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Kazumi Matsubara
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Ira W Deveson
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, NSW 2052, Australia
| | - Denis O'Meally
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Hardip R Patel
- Genome Sciences Department, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | - Tariq Ezaz
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Zhao Li
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Chexu Wang
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Melanie Edwards
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia
| | - Jennifer A Marshall Graves
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia;
- School of Life Sciences, La Trobe University, Bundoora, VIC 3186, Australia
| | - Arthur Georges
- Institute for Applied Ecology, University of Canberra, Bruce, ACT 2617, Australia;
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10
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Ferchaud AL, Mérot C, Normandeau E, Ragoussis J, Babin C, Djambazian H, Bérubé P, Audet C, Treble M, Walkusz W, Bernatchez L. Chromosome-level assembly reveals a putative Y-autosomal fusion in the sex determination system of the Greenland Halibut (Reinhardtius hippoglossoides). G3-GENES GENOMES GENETICS 2021; 12:6428537. [PMID: 34791178 DOI: 10.1093/g3journal/jkab376] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 10/21/2021] [Indexed: 11/13/2022]
Abstract
Despite the commercial importance of Greenland Halibut (Reinhardtius hippoglossoides), important gaps still persist in our knowledge of this species, including its reproductive biology and sex determination mechanism. Here, we combined single-molecule sequencing of long reads (Pacific Sciences) with chromatin conformation capture sequencing (Hi-C) data to assemble the first chromosome-level reference genome for this species. The high-quality assembly encompassed more than 598 Megabases (Mb) assigned to 1 594 scaffolds (scaffold N50 = 25 Mb) with 96% of its total length distributed among 24 chromosomes. Investigation of the syntenic relationship with other economically important flatfish species revealed a high conservation of synteny blocks among members of this phylogenetic clade. Sex determination analysis revealed that, similar to other teleost fishes, flatfishes also exhibit a high level of plasticity and turnover in sex-determination mechanisms. A low-coverage whole-genome sequence analysis of 198 individuals revealed that Greenland Halibut possesses a male heterogametic XY system and several putative candidate genes implied in the sex determination of this species. Our study also suggests for the first time in flatfishes that a putative Y-autosomal fusion could be associated with a reduction of recombination typical of the early steps of sex chromosome evolution.
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Affiliation(s)
- Anne-Laure Ferchaud
- Département de Biologie, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, G1V 0A6, Canada
| | - Claire Mérot
- Département de Biologie, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, G1V 0A6, Canada
| | - Eric Normandeau
- Département de Biologie, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, G1V 0A6, Canada
| | - Jiannis Ragoussis
- McGill Genome Centre and Department for Human Genetics, McGill University, Montreal, Quebec, H3A 0G1, Canada
| | - Charles Babin
- Département de Biologie, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, G1V 0A6, Canada
| | - Haig Djambazian
- McGill Genome Centre and Department for Human Genetics, McGill University, Montreal, Quebec, H3A 0G1, Canada
| | - Pierre Bérubé
- McGill Genome Centre and Department for Human Genetics, McGill University, Montreal, Quebec, H3A 0G1, Canada
| | - Céline Audet
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC G5L 3A1, Canada
| | - Margaret Treble
- Fisheries and Oceans Canada, Winnipeg Department, Arctic Aquatic Research Division, Freshwater Institute Winnipeg, Manitoba, R3T2N6, Canada
| | - Wocjciech Walkusz
- Fisheries and Oceans Canada, Winnipeg Department, Arctic Aquatic Research Division, Freshwater Institute Winnipeg, Manitoba, R3T2N6, Canada
| | - Louis Bernatchez
- Département de Biologie, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, G1V 0A6, Canada
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11
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Shi WJ, Ma DD, Fang GZ, Zhang JG, Huang GY, Xie L, Chen HX, Hou LP, Ying GG. Levonorgestrel and dydrogesterone affect sex determination via different pathways in zebrafish. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 240:105972. [PMID: 34571414 DOI: 10.1016/j.aquatox.2021.105972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
Levonorgestrel (LNG) and dydrogesterone (DDG) are two commonly used synthetic progestins that have been detected in aquatic environments. They could affect fish sex differentiation, but the underlying mechanisms remain unknown. Here we investigated the effects of LNG (5 ng L-1 and 50 ng L-1), DDG (100 ng L-1) and their mixtures on gonadal differentiation and sex determination in zebrafish at transcriptomic and histological levels from 2 hours post-fertilization (eleutheroembryos) to 144 days post-fertilization (sexual maturity). Germ cell development and oogenesis pathways were significantly enriched in LNG and the mixture of LNG and DDG treatments, while insulin and apoptosis pathways in the DDG treatment. LNG and the mixture of LNG and DDG strongly decreased transcripts of germ cell development and oogenesis related genes, while DDG increased the transcripts of insulin and apoptosis related genes at 28 days post fertilization (dpf) and 35 dpf. Furthermore, DDG caused ∼ 90% males, and LNG and the mixture of LNG and DDG resulted in 100% males on all sampling dates. Specifically, most males in LNG and the mixture of LNG and DDG treatments were "Type I" males without juvenile oocytes at 28 dpf and 35 dpf, while those in DDG treatment were "Type II" and "Type III" males with a few juvenile oocytes. These results indicated that LNG and DDG promoted testicular differentiation via different pathways to cause male bias. LNG and DDG mixtures have similar effect on testicular differentiation to LNG alone. The findings from this study could have significant ecological implications to fish populations.
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Affiliation(s)
- Wen-Jun Shi
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Dong-Dong Ma
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Gui-Zhen Fang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Jin-Ge Zhang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Guo-Yong Huang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Hong-Xing Chen
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Li-Ping Hou
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
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12
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Naomi R, Bahari H, Yazid MD, Embong H, Othman F. Zebrafish as a Model System to Study the Mechanism of Cutaneous Wound Healing and Drug Discovery: Advantages and Challenges. Pharmaceuticals (Basel) 2021; 14:1058. [PMID: 34681282 PMCID: PMC8539578 DOI: 10.3390/ph14101058] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/12/2021] [Accepted: 09/17/2021] [Indexed: 12/15/2022] Open
Abstract
In humans, cutaneous wounds may heal without scars during embryogenesis. However, in the adult phase, the similar wound may undergo a few events such as homeostasis, blood clotting, inflammation, vascularization, and the formation of granulation tissue, which may leave a scar at the injury site. In consideration of this, research evolves daily to improve the healing mechanism in which the wound may heal without scarring. In regard to this, zebrafish (Danio rerio) serves as an ideal model to study the underlying signaling mechanism of wound healing. This is an important factor in determining a relevant drug formulation for wound healing. This review scrutinizes the biology of zebrafish and how this favors the cutaneous wound healing relevant to the in vivo evidence. This review aimed to provide the current insights on drug discovery for cutaneous wound healing based on the zebrafish model. The advantages and challenges in utilizing the zebrafish model for cutaneous wound healing are discussed in this review. This review is expected to provide an idea to formulate an appropriate drug for cutaneous wound healing relevant to the underlying signaling mechanism. Therefore, this narrative review recapitulates current evidence from in vivo studies on the cutaneous wound healing mechanism, which favours the discovery of new drugs. This article concludes with the need for zebrafish as an investigation model for biomedical research in the future to ensure that drug repositions are well suited for human skin.
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Affiliation(s)
- Ruth Naomi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (R.N.); (H.B.)
| | - Hasnah Bahari
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia; (R.N.); (H.B.)
| | - Muhammad Dain Yazid
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia;
| | - Hashim Embong
- Department of Emergency Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia;
| | - Fezah Othman
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
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13
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Souza TP, Franscescon F, Stefanello FV, Müller TE, Santos LW, Rosemberg DB. Acute effects of ethanol on behavioral responses of male and female zebrafish in the open field test with the influence of a non-familiar object. Behav Processes 2021; 191:104474. [PMID: 34371127 DOI: 10.1016/j.beproc.2021.104474] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/30/2021] [Accepted: 08/04/2021] [Indexed: 12/26/2022]
Abstract
In this report, we investigate whether the acute effects of different ethanol (EtOH) concentrations are sex-dependent in zebrafish subjected to the open field test (OFT) with the influence of a non-familiar object. Male and female zebrafish were separated into four groups and exposed to EtOH (0%, 0.25%, 0.5%, or 1.0% v/v) for 1 h. Fish were tested individually in the OFT, in which tank was divided into three areas: periphery, intermediate, and center area. An object (black sphere; diameter: 1 cm) was placed in the center of the tank and behaviors were recorded for 5 min. At the baseline, females had a distinct exploratory activity and interaction pattern with the object, reflecting a more anxious and shyer behavior in relation to males. Females exposed to 0.5% EtOH performed more rapid investigation to the object than males, while 1.0% EtOH reduced locomotion in both sexes and increased immobility only in males. Principal component analyses revealed that anxiety-like behaviors, exploratory activity, and locomotion were the components that most accounted for total variances. Collectively, our novel findings show the existence of a sex-dependent effect in the zebrafish models acutely exposed to EtOH tested in the OFT with a non-familiar object.
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Affiliation(s)
- Thiele P Souza
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Francini Franscescon
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Flavia V Stefanello
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Talise E Müller
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Laura W Santos
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Denis B Rosemberg
- Laboratory of Experimental Neuropsychobiology, Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS, 97105-900, Brazil; The International Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA, 70458, USA.
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14
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Hosseini S, Schmitt AO, Tetens J, Brenig B, Simianer H, Sharifi AR, Gültas M. In Silico Prediction of Transcription Factor Collaborations Underlying Phenotypic Sexual Dimorphism in Zebrafish ( Danio rerio). Genes (Basel) 2021; 12:873. [PMID: 34200177 PMCID: PMC8227731 DOI: 10.3390/genes12060873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/02/2021] [Accepted: 06/05/2021] [Indexed: 11/17/2022] Open
Abstract
The transcriptional regulation of gene expression in higher organisms is essential for different cellular and biological processes. These processes are controlled by transcription factors and their combinatorial interplay, which are crucial for complex genetic programs and transcriptional machinery. The regulation of sex-biased gene expression plays a major role in phenotypic sexual dimorphism in many species, causing dimorphic gene expression patterns between two different sexes. The role of transcription factor (TF) in gene regulatory mechanisms so far has not been studied for sex determination and sex-associated colour patterning in zebrafish with respect to phenotypic sexual dimorphism. To address this open biological issue, we applied bioinformatics approaches for identifying the predicted TF pairs based on their binding sites for sex and colour genes in zebrafish. In this study, we identified 25 (e.g., STAT6-GATA4; JUN-GATA4; SOX9-JUN) and 14 (e.g., IRF-STAT6; SOX9-JUN; STAT6-GATA4) potentially cooperating TFs based on their binding patterns in promoter regions for sex determination and colour pattern genes in zebrafish, respectively. The comparison between identified TFs for sex and colour genes revealed several predicted TF pairs (e.g., STAT6-GATA4; JUN-SOX9) are common for both phenotypes, which may play a pivotal role in phenotypic sexual dimorphism in zebrafish.
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Affiliation(s)
- Shahrbanou Hosseini
- Molecular Biology of Livestock and Molecular Diagnostics Group, Department of Animal Sciences, University of Göttingen, 37077 Göttingen, Germany;
- Functional Breeding Group, Department of Animal Sciences, University of Göttingen, 37077 Göttingen, Germany;
- Institute of Veterinary Medicine, University of Göttingen, 37077 Göttingen, Germany
- Center for Integrated Breeding Research (CiBreed), University of Göttingen, 37075 Göttingen, Germany; (A.O.S.); (H.S.); (A.R.S.); (M.G.)
| | - Armin Otto Schmitt
- Center for Integrated Breeding Research (CiBreed), University of Göttingen, 37075 Göttingen, Germany; (A.O.S.); (H.S.); (A.R.S.); (M.G.)
- Breeding Informatics Group, Department of Animal Sciences, University of Göttingen, 37075 Göttingen, Germany
| | - Jens Tetens
- Functional Breeding Group, Department of Animal Sciences, University of Göttingen, 37077 Göttingen, Germany;
- Center for Integrated Breeding Research (CiBreed), University of Göttingen, 37075 Göttingen, Germany; (A.O.S.); (H.S.); (A.R.S.); (M.G.)
| | - Bertram Brenig
- Molecular Biology of Livestock and Molecular Diagnostics Group, Department of Animal Sciences, University of Göttingen, 37077 Göttingen, Germany;
- Institute of Veterinary Medicine, University of Göttingen, 37077 Göttingen, Germany
- Center for Integrated Breeding Research (CiBreed), University of Göttingen, 37075 Göttingen, Germany; (A.O.S.); (H.S.); (A.R.S.); (M.G.)
| | - Henner Simianer
- Center for Integrated Breeding Research (CiBreed), University of Göttingen, 37075 Göttingen, Germany; (A.O.S.); (H.S.); (A.R.S.); (M.G.)
- Animal Breeding and Genetics Group, Department of Animal Sciences, University of Göttingen, 37075 Göttingen, Germany
| | - Ahmad Reza Sharifi
- Center for Integrated Breeding Research (CiBreed), University of Göttingen, 37075 Göttingen, Germany; (A.O.S.); (H.S.); (A.R.S.); (M.G.)
- Animal Breeding and Genetics Group, Department of Animal Sciences, University of Göttingen, 37075 Göttingen, Germany
| | - Mehmet Gültas
- Center for Integrated Breeding Research (CiBreed), University of Göttingen, 37075 Göttingen, Germany; (A.O.S.); (H.S.); (A.R.S.); (M.G.)
- Breeding Informatics Group, Department of Animal Sciences, University of Göttingen, 37075 Göttingen, Germany
- Faculty of Agriculture, South Westphalia University of Applied Sciences, 59494 Soest, Germany
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15
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Karoglu-Eravsar ET, Tuz-Sasik MU, Adams MM. Environmental enrichment applied with sensory components prevents age-related decline in synaptic dynamics: Evidence from the zebrafish model organism. Exp Gerontol 2021; 149:111346. [PMID: 33838219 DOI: 10.1016/j.exger.2021.111346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/31/2021] [Accepted: 04/03/2021] [Indexed: 10/21/2022]
Abstract
Progression of cognitive decline with or without neurodegeneration varies among elderly subjects. The main aim of the current study was to illuminate the molecular mechanisms that promote and retain successful aging in the context of factors such as environment and gender, both of which alter the resilience of the aging brain. Environmental enrichment (EE) is one intervention that may lead to the maintenance of cognitive processing at older ages in both humans and animal subjects. EE is easily applied to different model organisms, including zebrafish, which show similar age-related molecular and behavioral changes as humans. Global changes in cellular and synaptic markers with respect to age, gender and 4-weeks of EE applied with sensory stimulation were investigated using the zebrafish model organism. Results indicated that EE increases brain weight in an age-dependent manner without affecting general body parameters like body mass index (BMI). Age-related declines in the presynaptic protein synaptophysin, AMPA-type glutamate receptor subunits and a post-mitotic neuronal marker were observed and short-term EE prevents these changes in aged animals, as well as elevates levels of the inhibitory scaffolding protein, gephyrin. Gender-driven alterations were observed in the levels of the glutamate receptor subunits. Oxidative stress markers were significantly increased in the old animals, while exposure to EE did not alter this pattern. These data suggest that EE with sensory stimulation exerts its effects mainly on age-related changes in synaptic dynamics, which likely increase brain resilience through specific cellular mechanisms.
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Affiliation(s)
- Elif Tugce Karoglu-Eravsar
- Interdisciplinary Program in Neuroscience, Aysel Sabuncu Brain Research Center, Bilkent University, Ankara, Turkey; National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, Turkey; Department of Molecular Biology and Genetics, Zebrafish Facility, Bilkent University, Ankara, Turkey; Department of Psychology, Selcuk University, Konya, Turkey
| | - Melek Umay Tuz-Sasik
- Interdisciplinary Program in Neuroscience, Aysel Sabuncu Brain Research Center, Bilkent University, Ankara, Turkey; National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, Turkey; Department of Molecular Biology and Genetics, Zebrafish Facility, Bilkent University, Ankara, Turkey
| | - Michelle M Adams
- Interdisciplinary Program in Neuroscience, Aysel Sabuncu Brain Research Center, Bilkent University, Ankara, Turkey; National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, Turkey; Department of Molecular Biology and Genetics, Zebrafish Facility, Bilkent University, Ankara, Turkey; Department of Psychology, Bilkent University, Ankara, Turkey.
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16
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King AC, Gut M, Zenker AK. Shedding new light on early sex determination in zebrafish. Arch Toxicol 2020; 94:4143-4158. [PMID: 32975586 PMCID: PMC7655572 DOI: 10.1007/s00204-020-02915-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/17/2020] [Indexed: 01/10/2023]
Abstract
In contrast to established zebrafish gene annotations, the question of sex determination has still not been conclusively clarified for developing zebrafish, Danio rerio, larvae, 28 dpf or earlier. Recent studies indicate polygenic sex determination (PSD), with the genes being distributed throughout the genome. Early genetic markers of sex in zebrafish help unravel co-founding sex-related differences to apply to human health and environmental toxicity studies. A qPCR-based method was developed for six genes: cytochrome P450, family 17, subfamily A, polypeptide 1 (cyp17a1); cytochrome P450, family 19, subfamily A, polypeptide 1a (cyp19a1a); cytochrome P450, family 19, subfamily A, polypeptides 1b (cyp19a1b); vitellogenin 1 (vtg1); nuclear receptor subfamily 0, group B, member 1 (nr0b1), sry (sex-determining region Y)-box 9b (sox9b) and actin, beta 1 (actb1), the reference gene. Sry-box 9a (Sox9a), insulin-like growth factor 3 (igf3) and double sex and mab-3 related transcription factor 1 (dmrt1), which are also known to be associated with sex determination, were used in gene expression tests. Additionally, Next-Generation-Sequencing (NGS) sequenced the genome of two adult female and male and two juveniles. PCR analysis of adult zebrafish revealed sex-specific expression of cyp17a1, cyp19a1a, vtg1, igf3 and dmrt1, the first four strongly expressed in female zebrafish and the last one highly expressed in male conspecifics. From NGS, nine female and four male-fated genes were selected as novel for assessing zebrafish sex, 28 dpf. Differences in transcriptomes allowed allocation of sex-specific genes also expressed in juvenile zebrafish.
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Affiliation(s)
- Alex C King
- FHNW, University of Applied Sciences and Arts North-Western Switzerland, School of Life Sciences, Institute for Ecopreneurship, Hofackerstrasse 30, 4132, Muttenz, Switzerland
| | - Michelle Gut
- FHNW, University of Applied Sciences and Arts North-Western Switzerland, School of Life Sciences, Institute for Ecopreneurship, Hofackerstrasse 30, 4132, Muttenz, Switzerland
| | - Armin K Zenker
- FHNW, University of Applied Sciences and Arts North-Western Switzerland, School of Life Sciences, Institute for Ecopreneurship, Hofackerstrasse 30, 4132, Muttenz, Switzerland.
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17
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Vishnolia KK, Hoene C, Tarhbalouti K, Revenstorff J, Aherrahrou Z, Erdmann J. Studies in Zebrafish Demonstrate That CNNM2 and NT5C2 Are Most Likely the Causal Genes at the Blood Pressure-Associated Locus on Human Chromosome 10q24.32. Front Cardiovasc Med 2020; 7:135. [PMID: 32984406 PMCID: PMC7492806 DOI: 10.3389/fcvm.2020.00135] [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: 04/07/2020] [Accepted: 06/30/2020] [Indexed: 12/22/2022] Open
Abstract
Background: Globally, high blood pressure (BP) is the most important risk factor for cardiovascular disease. Several genome-wide association studies (GWAS) have identified variants associated with BP traits at more than 535 chromosomal loci with genome-wide significance. The post-GWAS challenge is to annotate the most likely causal gene(s) at each locus. Chromosome 10q24.32 is a locus associated with BP that encompasses five genes: CYP17A1, BORCS7, AS3MT, CNNM2, and NT5C2 and warrants investigation to determine the specific gene or genes responsible for the phenotype. Aim: To identify the most likely causal gene(s) associated with BP at the 10q24.32 locus using zebrafish as an animal model. Results: We report significantly higher blood flow, increased arterial pulse, and elevated linear velocity in zebrafish larvae with cnnm2 and nt5c2 knocked down using gene-specific splice modification transcriptional morpholinos, compared with controls. No differences in blood-flow parameters were observed after as3mt, borcs7, or cyp17a1 knockdown. There was no effect on vessel diameter in animals with any of the four genes knocked down. At the molecular level, expression of hypertension markers (crp and ace) was significantly increased in cnnm2 and nt5c2 knockdown larvae. Further, the results obtained by morpholino knockdown were validated using zebrafish knockout (KO) lines with cnnm2 and nt5c2 deficiency, again resulting in higher blood flow, increased arterial pulse, and elevated linear velocity. Analysis of nt5c2a KO larvae demonstrated that lack of this gene resulted in reduced expression of cnnm2a, with reciprocal downregulation of nt5c2a in cnnm2a KO larvae. Staining of whole-blood smears from nt5c2 mutants revealed that KO of this gene might be associated with an acute lymphoblastic leukemia phenotype, consistent with literature reports. Additional experiments were designed based on previous literature on cnnm2a mutant zebrafish revealed impaired renal function, high levels of renin, and significantly increased expression of the ren gene, leading us to hypothesize that the observed elevated blood-flow parameters may be attributable to triggering of the renin-angiotensin-aldosterone signaling pathway. Conclusion: Our zebrafish data establish CNNM2 and NT5C2 as the most likely causal genes at the 10q24.32 BP locus and indicate that they trigger separate downstream mechanistic pathways.
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Affiliation(s)
- Krishan K Vishnolia
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), Partner Site Hamburg/Luebeck/Kiel, Luebeck, Germany.,University Heart Centre Luebeck, Luebeck, Germany
| | - Celine Hoene
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), Partner Site Hamburg/Luebeck/Kiel, Luebeck, Germany.,University Heart Centre Luebeck, Luebeck, Germany
| | - Karim Tarhbalouti
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), Partner Site Hamburg/Luebeck/Kiel, Luebeck, Germany.,University Heart Centre Luebeck, Luebeck, Germany
| | - Julian Revenstorff
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), Partner Site Hamburg/Luebeck/Kiel, Luebeck, Germany.,University Heart Centre Luebeck, Luebeck, Germany
| | - Zouhair Aherrahrou
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), Partner Site Hamburg/Luebeck/Kiel, Luebeck, Germany.,University Heart Centre Luebeck, Luebeck, Germany
| | - Jeanette Erdmann
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany.,DZHK (German Research Centre for Cardiovascular Research), Partner Site Hamburg/Luebeck/Kiel, Luebeck, Germany.,University Heart Centre Luebeck, Luebeck, Germany
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18
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Hou L, Chen S, Shi W, Chen H, Liang Y, Wang X, Tan J, Wang Y, Deng X, Zhan M, Long J, Cai G, Luo S, Zhang C, Liu J, Leung JYS, Xie L. Norethindrone alters mating behaviors, ovary histology, hormone production and transcriptional expression of steroidogenic genes in zebrafish (Danio rerio). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 195:110496. [PMID: 32213369 DOI: 10.1016/j.ecoenv.2020.110496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 06/10/2023]
Abstract
The impact of progestins (i.e. synthetic forms of progesterone) on aquatic organisms has drawn increasing attention due to their widespread occurrence in the aquatic environments and potential effects on the endocrine system of fish. In this study, the effects of norethindrone (NET, a progestin) on the reproductive behavior, sex hormone production and transcriptional expressions were evaluated by exposing female zebrafish to NET at 0, 3.1, 36.2 and 398.6 ng L-1 for 60 days. Results showed that NET impaired the mating behaviors of female at 36.2 and 398.6 ng L-1 exhibited by males and increased the frequency of atretic follicular cells in the ovary exposed to NET at 398.6 ng L-1. As for sex hormones, plasma testosterone concentration in zebrafish increased, while estradiol concentration decreased. Up-regulation of genes (Npr, Mpra, Mprβ, Fshβ, Lβ, Tshb, Nis and Dio2) was detected in the brain of fish exposed to NET at 398.6 ng L-1. The transcriptional levels of genes (Esr1, Vtg1, Ar, Cyp19a, Cyp11b and Ptgs2) were generally inhibited in the ovary of zebrafish by NET at 398.6 ng L-1. Moreover, the transcripts of genes (Vtg1, Esr1, Ar and Pgr) in the liver were reduced by NET at 36.2 and 398.6 ng L-1. Our findings suggest that NET can potentially diminish the of fish populations not only by damaging their reproductive organs, but also by altering their mating behavior through the changes in the expressions of genes responsible for the production of sex hormones.
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Affiliation(s)
- Liping Hou
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Shanduo Chen
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Wenjun Shi
- School of Environment, South China Normal University, University Town, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Hongxing Chen
- School of Environment, South China Normal University, University Town, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Yanqiu Liang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Xiaolan Wang
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Jiefeng Tan
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Yifan Wang
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Xikai Deng
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Manjun Zhan
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Jianzhao Long
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Guowei Cai
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Shaowen Luo
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Cuiping Zhang
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Juan Liu
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution, China.
| | - Jonathan Y S Leung
- Faculty of Materials and Energy, Southwest University, Chongqing, 400715, China; School of Biological Sciences, The University of Adelaide, Adelaide, 5005, Australia.
| | - Lingtian Xie
- School of Environment, South China Normal University, University Town, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China.
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Drug-selective Anesthetic Insensitivity of Zebrafish Lacking γ-Aminobutyric Acid Type A Receptor β3 Subunits. Anesthesiology 2020; 131:1276-1291. [PMID: 31567362 DOI: 10.1097/aln.0000000000002963] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Transgenic mouse studies suggest that γ-aminobutyric acid type A (GABAA) receptors containing β3 subunits mediate important effects of etomidate, propofol, and pentobarbital. Zebrafish, recently introduced for rapid discovery and characterization of sedative-hypnotics, could also accelerate pharmacogenetic studies if their transgenic phenotypes reflect those of mammals. The authors hypothesized that, relative to wild-type, GABAA-β3 functional knock-out (β3) zebrafish would show anesthetic sensitivity changes similar to those of β3 mice. METHODS Clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 mutagenesis was used to create a β3 zebrafish line. Wild-type and β3 zebrafish were compared for fertility, growth, and craniofacial development. Sedative and hypnotic effects of etomidate, propofol, pentobarbital, alphaxalone, ketamine, tricaine, dexmedetomidine, butanol, and ethanol, along with overall activity and thigmotaxis were quantified in 7-day postfertilization larvae using video motion analysis of up to 96 animals simultaneously. RESULTS Xenopus oocyte electrophysiology showed that the wild-type zebrafish β3 gene encodes ion channels activated by propofol and etomidate, while the β3 zebrafish transgene does not. Compared to wild-type, β3 zebrafish showed similar morphology and growth, but more rapid swimming. Hypnotic EC50s (mean [95% CI]) were significantly higher for β3 versus wild-type larvae with etomidate (1.3 [1.0 to 1.6] vs. 0.6 [0.5 to 0.7] µM; P < 0.0001), propofol (1.1 [1.0 to 1.4] vs. 0.7 [0.6 to 0.8] µM; P = 0.0005), and pentobarbital (220 [190 to 240] vs. 130 [94 to 179] μM; P = 0.0009), but lower with ethanol (150 [106 to 213] vs. 380 [340 to 420] mM; P < 0.0001) and equivalent with other tested drugs. Comparing β3 versus wild-type sedative EC50s revealed a pattern similar to hypnosis. CONCLUSIONS Global β3 zebrafish are selectively insensitive to the same few sedative-hypnotics previously reported in β3 transgenic mice, indicating phylogenetic conservation of β3-containing GABAA receptors as anesthetic targets. Transgenic zebrafish are potentially valuable models for sedative-hypnotic mechanisms research.
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Yuan C, Zhang C, Qi Y, Li D, Hu Y, Huang D. 2,4-Dichlorophenol induced feminization of zebrafish by down-regulating male-related genes through DNA methylation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:110042. [PMID: 31816500 DOI: 10.1016/j.ecoenv.2019.110042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 11/28/2019] [Accepted: 11/30/2019] [Indexed: 06/10/2023]
Abstract
2,4-Dichlorophenol (2,4-DCP) is ubiquitous in aquatic environment and has potential estrogenic effect on fish. However, the effect of 2,4-DCP on sex differentiation of zebrafish (Danio rerio) and the underlying mechanism are largely unknown. To address these questions, zebrafish larvae at 20 or 30 days post fertilization (dpf) were exposed to 2,4-DCP (0, 80 and 160 μg L-1) with/without 5-aza-2'-deoxycytidine (5AZA, 50 μg L-1) for 10 days. The sex ratios and the expressions of male-related genes including amh, gata4, nr5a1a, nr5a2 and sox9a were analyzed. In addition, the DNA methylation levels of amh, nr5a2 and sox9a were examined. The results showed that 2,4-DCP exposure resulted in significant increase of female ratios both in 20-30 and 30-40 dpf groups. Correspondingly, the expressions of gata4, nr5a1a, nr5a2 and sox9a were decreased by 2,4-DCP exposure in two treatment periods. However, the transcript of amh was decreased by 2,4-DCP exposure only from 30 to 40 dpf. The DNA methylation levels of amh, nr5a2 and sox9a were increased following 2,4-DCP exposure. Moreover, the addition of 5AZA could counteract the effects including feminization, disturbance of gene expression and DNA hypermethylation caused by 2,4-DCP. These results indicated that the feminizing effect of 2,4-DCP was accomplished by regulating the expression of male-related genes through DNA methylation.
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Affiliation(s)
- Cong Yuan
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Chen Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yongmei Qi
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Dong Li
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yan Hu
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Dejun Huang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
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21
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Rojo-Bartolomé I, Santana de Souza JE, Diaz de Cerio O, Cancio I. Duplication and subfunctionalisation of the general transcription factor IIIA (gtf3a) gene in teleost genomes, with ovarian specific transcription of gtf3ab. PLoS One 2020; 15:e0227690. [PMID: 31999691 PMCID: PMC6991959 DOI: 10.1371/journal.pone.0227690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/25/2019] [Indexed: 01/02/2023] Open
Abstract
Fish oogenesis is characterised by a massive growth of oocytes each reproductive season. This growth requires the stockpiling of certain molecules, such as ribosomal RNAs to assist the rapid ribosomal assembly and protein synthesis required to allow developmental processes in the newly formed embryo. Massive 5S rRNA expression in oocytes, facilitated by transcription factor 3A (Gtf3a), serves as marker of intersex condition in fish exposed to xenoestrogens. Our present work on Gtf3a gene evolution has been analysed in silico in teleost genomes and functionally in the case of the zebrafish Danio rerio. Synteny-analysis of fish genomes has allowed the identification of two gtf3a paralog genes, probably emerged from the teleost specific genome duplication event. Functional analyses demonstrated that gtf3ab has evolved as a gene specially transcribed in oocytes as observed in Danio rerio, and also in Oreochromis niloticus. Instead, gtf3aa was observed to be ubiquitously expressed. In addition, in zebrafish embryos gtf3aa transcription began with the activation of the zygotic genome (~8 hpf), while gtf3ab transcription began only at the onset of oogenesis. Under exposure to 100 ng/L 17β-estradiol, fully feminised 61 dpf zebrafish showed transcription of ovarian gtf3ab, while masculinised (100 ng/L 17α-methyltestosterone treated) zebrafish only transcribed gtf3aa. Sex related transcription of gtf3ab coincided with that of cyp19a1a being opposite to that of amh and dmrt1. Such sex dimorphic pattern of gtf3ab transcription was not observed earlier in larvae that had not yet shown any signs of gonad formation after 26 days of oestradiol exposure. Thus, gtf3ab transcription is a consequence of oocyte differentiation and not a direct result of estrogen exposure, and could constitute a useful marker of gonad feminisation and intersex condition.
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Affiliation(s)
- Iratxe Rojo-Bartolomé
- CBET Research Group, Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU) and Dept. of Zoology and Cell Biology (Fac. Science and Technology), University of the Basque Country (UPV/EHU), Bilbao, Basque Country, Spain
| | - Jorge Estefano Santana de Souza
- Bioinformatics Multidisciplinary Environment – BioME, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Oihane Diaz de Cerio
- CBET Research Group, Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU) and Dept. of Zoology and Cell Biology (Fac. Science and Technology), University of the Basque Country (UPV/EHU), Bilbao, Basque Country, Spain
| | - Ibon Cancio
- CBET Research Group, Centre for Experimental Marine Biology and Biotechnology (PiE-UPV/EHU) and Dept. of Zoology and Cell Biology (Fac. Science and Technology), University of the Basque Country (UPV/EHU), Bilbao, Basque Country, Spain
- * E-mail:
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22
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Wang W, Zhu H, Tian Z, Sun A, Dong Y, Dong T, Hu H. Effects of 11-Ketotestosterone on Development of the Previtellogenic Ovary in the Sterlet, Acipenser ruthenus. Front Endocrinol (Lausanne) 2020; 11:115. [PMID: 32269550 PMCID: PMC7109308 DOI: 10.3389/fendo.2020.00115] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/21/2020] [Indexed: 11/20/2022] Open
Abstract
11-ketotestosterone (11-KT) is a non-aromatizable and the most potent androgen in a few teleost. It has been reported that 11-KT in serum had a high concentration and increased sharply before the period of yolk deposition in females of few fishes. The aim of this study was to analyze the role of 11-KT both in vivo and in vitro on ovarian development, related gene expression levels, Vitellogenin (Vtg) synthesis, and serum sex steroid concentrations in previtellogenic cultured sterlet (Acipenser ruthenus). Silastic strips embedded with 11-KT (5 or 25 mg/kg) were implanted in vivo for 30 days. Ovarian masculinization or sex reversal was not observed. Histological analysis showed that 11-KT promoted sterlet ovarian development in a dose-dependent manner. Vtg and testosterone (T) increased significantly, while 17β-estradiol (E2) decreased with no significant difference among groups. The expression of genes androgen receptor (ar), vtg and lipoprotein lipase (lpl) were significantly increased in liver. However, 11-KT had no effect on the expression of foxl2 and cyp19a1 in ovary. In vitro, after incubation with 11-KT (10 and 100 μM) for 5 days, both T and E2 concentrations increased in both hepatic explants and ovarian explants culture medium; the concentration of Vtg also increased in hepatic explants culture medium. The expression of ar, era, vtg, and lpl increased significantly in hepatic explants. However, only the expression of era significantly increased in cultured ovarian explants. Altogether, these results suggest that 11-KT induced ovarian development, as well as Vtg and lipid synthesis, and could be an important factor facilitating the initiation of Vtg synthesis in the liver of the previtellogenic sterlet.
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Affiliation(s)
- Wei Wang
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery Biotechnology, Beijing, China
| | - Hua Zhu
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery Biotechnology, Beijing, China
- National Freshwater Fisheries Engineering Technology Research Center, Beijing, China
| | - ZhaoHui Tian
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery Biotechnology, Beijing, China
| | - Ai Sun
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery Biotechnology, Beijing, China
| | - Ying Dong
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery Biotechnology, Beijing, China
| | - Tian Dong
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery Biotechnology, Beijing, China
| | - HongXia Hu
- Beijing Fisheries Research Institute & Beijing Key Laboratory of Fishery Biotechnology, Beijing, China
- National Freshwater Fisheries Engineering Technology Research Center, Beijing, China
- *Correspondence: HongXia Hu
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23
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Pearse DE, Barson NJ, Nome T, Gao G, Campbell MA, Abadía-Cardoso A, Anderson EC, Rundio DE, Williams TH, Naish KA, Moen T, Liu S, Kent M, Moser M, Minkley DR, Rondeau EB, Brieuc MSO, Sandve SR, Miller MR, Cedillo L, Baruch K, Hernandez AG, Ben-Zvi G, Shem-Tov D, Barad O, Kuzishchin K, Garza JC, Lindley ST, Koop BF, Thorgaard GH, Palti Y, Lien S. Sex-dependent dominance maintains migration supergene in rainbow trout. Nat Ecol Evol 2019; 3:1731-1742. [DOI: 10.1038/s41559-019-1044-6] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 10/18/2019] [Indexed: 11/09/2022]
Abstract
AbstractMales and females often differ in their fitness optima for shared traits that have a shared genetic basis, leading to sexual conflict. Morphologically differentiated sex chromosomes can resolve this conflict and protect sexually antagonistic variation, but they accumulate deleterious mutations. However, how sexual conflict is resolved in species that lack differentiated sex chromosomes is largely unknown. Here we present a chromosome-anchored genome assembly for rainbow trout (Oncorhynchus mykiss) and characterize a 55-Mb double-inversion supergene that mediates sex-specific migratory tendency through sex-dependent dominance reversal, an alternative mechanism for resolving sexual conflict. The double inversion contains key photosensory, circadian rhythm, adiposity and sex-related genes and displays a latitudinal frequency cline, indicating environmentally dependent selection. Our results show sex-dependent dominance reversal across a large autosomal supergene, a mechanism for sexual conflict resolution capable of protecting sexually antagonistic variation while avoiding the homozygous lethality and deleterious mutations associated with typical heteromorphic sex chromosomes.
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24
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Guo H, Du X, Zhang Y, Wu J, Wang C, Li M, Hua X, Zhang XA, Yan J. Specific miRNA-G Protein-Coupled Receptor Networks Regulate Sox9a/Sox9b Activities to Promote Gonadal Rejuvenation in Zebrafish. Stem Cells 2019; 37:1189-1199. [DOI: 10.1002/stem.3040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/17/2019] [Accepted: 05/04/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Huiping Guo
- Department of Developmental Biology; Institute for Marine Biosystem and Neurosciences; People's Republic of China
| | - Xinlu Du
- Department of Developmental Biology; Institute for Marine Biosystem and Neurosciences; People's Republic of China
| | - Ying Zhang
- Department of Developmental Biology; Institute for Marine Biosystem and Neurosciences; People's Republic of China
| | - Jiacheng Wu
- Department of Developmental Biology; Institute for Marine Biosystem and Neurosciences; People's Republic of China
| | - Chenghui Wang
- Department of Aquaculture; Shanghai Ocean University; Lingang New City, Shanghai People's Republic of China
| | - Mingyou Li
- Department of Developmental Biology; Institute for Marine Biosystem and Neurosciences; People's Republic of China
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources; Ministry of Education; Shanghai People's Republic of China
| | - Xianxin Hua
- Department of Cancer Biology; University of Pennsylvania Perelman School of Medicine; Philadelphia, Pennsylvania USA
| | - Xin A. Zhang
- Stephenson Cancer Center and Department of Physiology; The University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma USA
| | - Jizhou Yan
- Department of Developmental Biology; Institute for Marine Biosystem and Neurosciences; People's Republic of China
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources; Ministry of Education; Shanghai People's Republic of China
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25
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Shi WJ, Ma DD, Jiang YX, Xie L, Zhang JN, Huang GY, Chen HX, Hou LP, Liu YS, Ying GG. Medroxyprogesterone acetate affects sex differentiation and spermatogenesis in zebrafish. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 212:70-76. [PMID: 31077968 DOI: 10.1016/j.aquatox.2019.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 04/15/2019] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
Medroxyprogesterone acetate (MPA) is a widely used synthetic progestin and it has been frequently detected in aquatic environments. However, its effects on aquatic organisms remain largely unknown. Here we investigated the chronic effects of MPA on sex differentiation and gonad development in zebrafish. Zebrafish larvae at 20 days post fertilization (dpf) were exposed to 4.32, 42.0, and 424 ng L-1 of MPA until they reached 140 dpf. The results showed that chronic exposure to 42.0 ng L-1 of MPA caused 60% proportion of males as well as significant up-regulation of dmrt1 (˜1.79 fold) and hsd17b3 (˜1.92 fold). Histological analysis showed MPA significantly increased the frequency of immature spermatocytes accompanied with the increased transcription of dmrt1 (˜2.06 fold) and ar (˜1.73 fold) in the testes. Meanwhile, MPA exposure significantly increased the transcription of lhb at all exposure concentrations in the males. In contrast, it significantly suppressed the transcription of lhb (˜-8.06-fold) and fshb (˜-6.35-fold) at 42.0 ng L-1 in the females. Collectively our results demonstrated that MPA had androgenic activity, and could affect sex differentiation and spermatogenesis in zebrafish at environmentally relevant concentrations. The findings from this study suggest that MPA in the aquatic environment may pose potential androgenic risks to fish populations.
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Affiliation(s)
- Wen-Jun Shi
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Dong-Dong Ma
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Yu-Xia Jiang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Jin-Na Zhang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Guo-Yong Huang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Hong-Xing Chen
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Li-Ping Hou
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - You-Sheng Liu
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China.
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26
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Genario R, de Abreu MS, Giacomini ACVV, Demin KA, Kalueff AV. Sex differences in behavior and neuropharmacology of zebrafish. Eur J Neurosci 2019; 52:2586-2603. [PMID: 31090957 DOI: 10.1111/ejn.14438] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/27/2019] [Accepted: 05/08/2019] [Indexed: 12/17/2022]
Abstract
Sex is an important variable in biomedical research. The zebrafish (Danio rerio) is increasingly utilized as a powerful new model organism in translational neuroscience and pharmacology. Mounting evidence indicates important sex differences in zebrafish behavioral and neuropharmacological responses. Here, we discuss the role of sex in zebrafish central nervous system (CNS) models, their molecular mechanisms, recent findings and the existing challenges in this field. We also emphasize the growing utility of zebrafish models in translational neuropharmacological research of sex differences, fostering future CNS drug discovery and the search for novel sex-specific therapies. Finally, we highlight the interplay between sex and environment in zebrafish models of sex-environment correlations as an important strategy of CNS disease modeling using this aquatic organism.
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Affiliation(s)
- Rafael Genario
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - Murilo S de Abreu
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil.,The International Zebrafish Neuroscience Research Consortium (ZNRC), Slidell, Louisiana
| | - 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, Brazil
| | - Konstantin A Demin
- Institute of Experimental Medicine, Almazov National Medical Research Center, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Allan V Kalueff
- School of Pharmacy, Southwest University, Chongqing, China.,Ural Federal University, Ekaterinburg, Russia
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27
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Carter NJ, Roach ZA, Byrnes MM, Zhu Y. Adamts9 is necessary for ovarian development in zebrafish. Gen Comp Endocrinol 2019; 277:130-140. [PMID: 30951722 DOI: 10.1016/j.ygcen.2019.04.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/25/2019] [Accepted: 04/01/2019] [Indexed: 01/17/2023]
Abstract
Expression of adamts9 (A disintegrin and metalloprotease with thrombospondin type-1 motif, member 9) increases dramatically in the somatic cells surrounding oocytes during ovulation in vertebrates from zebrafish to human. However, the function of Adamts9 during ovulation has not been determined due to the embryonic lethality of knockouts in mice and Drosophila. To identify the role of Adamts9 during ovulation we generated knockout (adamts9-/-) zebrafish using CRISPR/Cas9 and characterized the effects of the mutation. From 1047 fish generated by crossing adamts9+/- pairs, we found significantly fewer adult adamts9-/- fish (4%) than predicted by Mendelian ratios (25%). Of the mutants found, there was a significant male bias (82%). Only 3 female mutants were identified (7%), and they had small ovaries with few stage III and IV oocytes compared to wildtype (wt) counterparts of comparable size and age. Astoundingly, the remaining mutants (11%) did not appear to have normal testis or ovaries. Instead there was a pair of transparent, ovarian-like membranous shells that filled the abdominal cavity. Histological examination confirmed that shells were largely empty with no internal structure. Surprisingly, seminiferous tubules and various spermatocytes including mature spermatozoa were observed on the periphery of these transparent shells. No female or female like knockouts were observed to release eggs, and no ovulated oocytes were observed in histological sections. To our knowledge, this is the first report of an adamts9 global knockout model in any adult vertebrates and the first description of how gonadal sex and structure are affected- highlighting the importance of Adamts9 during gonadal development and the value of zebrafish as a model organism.
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Affiliation(s)
| | - Zachary Adam Roach
- Department of Biology, East Carolina University, Greenville 27858, NC, USA
| | | | - Yong Zhu
- Department of Biology, East Carolina University, Greenville 27858, NC, USA.
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Hosseini S, Ha NT, Simianer H, Falker-Gieske C, Brenig B, Franke A, Hörstgen-Schwark G, Tetens J, Herzog S, Sharifi AR. Genetic mechanism underlying sexual plasticity and its association with colour patterning in zebrafish (Danio rerio). BMC Genomics 2019; 20:341. [PMID: 31060508 PMCID: PMC6503382 DOI: 10.1186/s12864-019-5722-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 04/22/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Elevated water temperature, as is expected through climate change, leads to masculinization in fish species with sexual plasticity, resulting in changes in population dynamics. These changes are one important ecological consequence, contributing to the risk of extinction in small and inbred fish populations under natural conditions, due to male-biased sex ratio. Here we investigated the effect of elevated water temperature during embryogenesis on sex ratio and sex-biased gene expression profiles between two different tissues, namely gonad and caudal fin of adult zebrafish males and females, to gain new insights into the molecular mechanisms underlying sex determination (SD) and colour patterning related to sexual attractiveness. RESULTS Our study demonstrated sex ratio imbalances with 25.5% more males under high-temperature condition, resulting from gonadal masculinization. The result of transcriptome analysis showed a significantly upregulated expression of male SD genes (e.g. dmrt1, amh, cyp11c1 and sept8b) and downregulation of female SD genes (e.g. zp2.1, vtg1, cyp19a1a and bmp15) in male gonads compared to female gonads. Contrary to expectations, we found highly differential expression of colour pattern (CP) genes in the gonads, suggesting the 'neofunctionalisation' of those genes in the zebrafish reproduction system. However, in the caudal fin, no differential expression of CP genes was identified, suggesting the observed differences in colouration between males and females in adult fish may be due to post-transcriptional regulation of key enzymes involved in pigment synthesis and distribution. CONCLUSIONS Our study demonstrates male-biased sex ratio under high temperature condition and support a polygenic SD (PSD) system in laboratory zebrafish. We identify a subset of pathways (tight junction, gap junction and apoptosis), enriched for SD and CP genes, which appear to be co-regulated in the same pathway, providing evidence for involvement of those genes in the regulation of phenotypic sexual dimorphism in zebrafish.
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Affiliation(s)
- Shahrbanou Hosseini
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany. .,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany.
| | - Ngoc-Thuy Ha
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
| | - Henner Simianer
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
| | - Clemens Falker-Gieske
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
| | - Bertram Brenig
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany.,Institute of Veterinary Medicine, University of Goettingen, Goettingen, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University, Kiel, Germany
| | | | - Jens Tetens
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
| | - Sebastian Herzog
- Max Planck Institute for Dynamics and Self-Organization, Goettingen, Germany.,Department for Computational Neuroscience, 3rd Physics Institute-Biophysics, University of Goettingen, Goettingen, Germany
| | - Ahmad Reza Sharifi
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
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29
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Zhang Y, Zhuang H, Yang H, Xue W, Wang L, Wei W. Microcystin-LR disturbs testicular development of giant freshwater prawn Macrobrachium rosenbergii. CHEMOSPHERE 2019; 222:584-592. [PMID: 30731378 DOI: 10.1016/j.chemosphere.2019.01.146] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/23/2019] [Accepted: 01/25/2019] [Indexed: 06/09/2023]
Abstract
Microcystins (MCs) are produced by cyanobacterial blooms and known for their hepatotoxicity. They could cause serious damage to the reproduction of higher vertebrate mice and fish. However, few studies have focused on the reproductive toxicity of MCs to invertebrates. Giant freshwater prawn Macrobrachium rosenbergii are highly cultivated in China. During their breeding process, M. rosenbergii are often infested by cyanobacteria blooms. In the present study, to investigate the toxic effect of MCs on the testicular development of M. rosenbergii. Male M. rosenbergii were exposed to environmental relevant concentration of MC-LR for 1, 2 and 3 weeks. Results showed that MC-LR entered M. rosenbergii testis, down-regulated hemolymph testosterone (T) levels, and damaged testicular germ cells, mitochondria and cell junctions, and inhibited testicular development. Moreover, MC-LR could significantly induce the expression of gonadal development related genes in testis and eyestalk). The present results indicate that MC-LR can disrupt the testicular development of M. rosenbergii by affecting T levels and gonadal development related genes in the testis and eyestalk.
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Affiliation(s)
- Yingying Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.
| | - Hang Zhuang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Hui Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Wen Xue
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Liufu Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Wenzhi Wei
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
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30
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Valdivieso A, Ribas L, Piferrer F. Ovarian transcriptomic signatures of zebrafish females resistant to different environmental perturbations. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2019; 332:55-68. [DOI: 10.1002/jez.b.22848] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 03/06/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Alejandro Valdivieso
- Institut de Ciències del Mar (ICM)Consejo Superior de Investigaciones Científicas (CSIC)Barcelona Spain
| | - Laia Ribas
- Institut de Ciències del Mar (ICM)Consejo Superior de Investigaciones Científicas (CSIC)Barcelona Spain
| | - Francesc Piferrer
- Institut de Ciències del Mar (ICM)Consejo Superior de Investigaciones Científicas (CSIC)Barcelona Spain
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31
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Zheng Y, Yuan J, Meng S, Chen J, Gu Z. Testicular transcriptome alterations in zebrafish (Danio rerio) exposure to 17β-estradiol. CHEMOSPHERE 2019; 218:14-25. [PMID: 30465971 DOI: 10.1016/j.chemosphere.2018.11.092] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 11/11/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
The hormone 17β-estradiol (E2) can be found in rivers, effluents, and even drinking water. Researches have demonstrated that E2 affects various metabolic pathways through gene activation and may cause reproductive toxicity in fish. Therefore, the aim of this study was to evaluate E2-induced toxicity via testicular transcriptome of zebrafish (Danio rerio) exposed to different concentrations (10 ng L-1, and 100 ng L-1) of E2. A total of >600 significant differentially expressed genes (DEGs) were enriched among the three treatments. Short time-series expression miner analysis revealed five KEGG pathways including drug metabolism, other enzymes, calcium signaling pathway, ECM-receptor interaction, gap junction, and cell adhesion molecules. Twenty genes were selected to verify the accuracy of RNA-Seq. Other reported genes related to sex differentiation, development, energy metabolism, and other processes were found. One set of genes significantly increased/decreased/fluctuated over time, especially 12 h after E2 exposure. Genes associated with ovaries (zp3c), and development (bmp15, gdf9, and sycp2l) were significantly upregulated with increasing E2 concentration. E2 and testosterone was significantly decreased by 10 (except for T) and 100 ng L-1 E2 exposure at 12 h. The current study demonstrated that sex differentiation, development, energy metabolism, immunity, and ribosome biogenesis in male zebrafish were all significantly affected by 17β-estradiol exposure through transcriptional alterations.
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Affiliation(s)
- Yao Zheng
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences/Fishery Eco-Environment Monitoring Center of Lower Reaches of Yangtze River/Wuxi Fishery College, Nanjing Agricultural University, Ministry of Agriculture/Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors(Wuxi), Ministry of Agriculture, Wuxi, Jiangsu, 214081, China
| | - Julin Yuan
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Freshwater Aquaculture Genetic and Breeding of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, 313001, China
| | - Shunlong Meng
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences/Fishery Eco-Environment Monitoring Center of Lower Reaches of Yangtze River/Wuxi Fishery College, Nanjing Agricultural University, Ministry of Agriculture/Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors(Wuxi), Ministry of Agriculture, Wuxi, Jiangsu, 214081, China
| | - Jiazhang Chen
- Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences/Fishery Eco-Environment Monitoring Center of Lower Reaches of Yangtze River/Wuxi Fishery College, Nanjing Agricultural University, Ministry of Agriculture/Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors(Wuxi), Ministry of Agriculture, Wuxi, Jiangsu, 214081, China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture, Beijing, 100039, China.
| | - Zhimin Gu
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Freshwater Aquaculture Genetic and Breeding of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, 313001, China.
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32
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Volgin AD, Yakovlev OA, Demin KA, de Abreu MS, Alekseeva PA, Friend AJ, Lakstygal AM, Amstislavskaya TG, Bao W, Song C, Kalueff AV. Zebrafish models for personalized psychiatry: Insights from individual, strain and sex differences, and modeling gene x environment interactions. J Neurosci Res 2018; 97:402-413. [PMID: 30320468 DOI: 10.1002/jnr.24337] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 08/16/2018] [Accepted: 09/17/2018] [Indexed: 12/30/2022]
Abstract
Currently becoming widely recognized, personalized psychiatry focuses on unique physiological and genetic profiles of patients to best tailor their therapy. However, the role of individual differences, as well as genetic and environmental factors, in human psychiatric disorders remains poorly understood. Animal experimental models are a valuable tool to improve our understanding of disease pathophysiology and its molecular mechanisms. Due to high reproduction capability, fully sequenced genome, easy gene editing, and high genetic and physiological homology with humans, zebrafish (Danio rerio) are emerging as a novel powerful model in biomedicine. Mounting evidence supports zebrafish as a useful model organism in CNS research. Robustly expressed in these fish, individual, strain, and sex differences shape their CNS responses to genetic, environmental, and pharmacological manipulations. Here, we discuss zebrafish as a promising complementary translational tool to further advance patient-centered personalized psychiatry.
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Affiliation(s)
- Andrey D Volgin
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia.,Military Medical Academy, St Petersburg, Russia
| | - Oleg A Yakovlev
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia.,Military Medical Academy, St Petersburg, Russia
| | - Konstantin A Demin
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Murilo S de Abreu
- Bioscience Institute, University of Passo Fundo (UPF), Passo Fundo, Brazil.,Postgraduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Polina A Alekseeva
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia
| | - Ashton J Friend
- Tulane University School of Science and Engineering, New Orleans, Louisiana
| | - Anton M Lakstygal
- Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Tamara G Amstislavskaya
- Laboratory of Translational Biopsychiatry, Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia
| | - Wandong Bao
- School of Pharmacy, Southwest University, Chongqing, China
| | - Cai Song
- Research Institute of Marine Drugs and Nutrition, Guangdong Ocean University, Zhanjiang, China
| | - Allan V Kalueff
- School of Pharmacy, Southwest University, Chongqing, China.,Ural Federal University, Ekaterinburg, Russia.,ZENEREI Research Center, Slidell, Louisiana.,Institute of Experimental Medicine, Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Granov Russian Scientific Center of Radiology and Surgical Technologies, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia.,Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia.,Laboratory of Biological Psychiatry, Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
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33
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Shi WJ, Jiang YX, Huang GY, Zhao JL, Zhang JN, Liu YS, Xie LT, Ying GG. Dydrogesterone Causes Male Bias and Accelerates Sperm Maturation in Zebrafish ( Danio rerio). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:8903-8911. [PMID: 30004691 DOI: 10.1021/acs.est.8b02556] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Synthetic progestins are widely used in human and veterinary medicine. They can enter aquatic environments mainly via wastewater discharge and agricultural runoff, thus affecting fish populations in receiving waters. Here, we investigated the chronic effects of dydrogesterone (DDG) on zebrafish from 21 to 140 days post-fertilization (dpf) at 3.39, 33.1, and 329 ng L-1. The results showed that the male ratio increased with the exposure concentration, and after 120 days of exposure to 329 ng L-1, 98% of the fish were males. The DDG exposure during sex differentiation significantly increased the transcription of dmrt1 (1.83-fold) and apoptosis-related genes but suppressed the transcription of cyp19a1a (3.16-fold). Histological analysis showed that the exposure to DDG at 329 ng L-1 caused 61.5% of mature spermatocytes in males, while the exposure to DDG at 33.1 ng L-1 resulted in 14.7% of atretic follicles in females. Microarray analysis identified spermatogenesis-related gene ontology (endothelial barrier and immune response) in the testes at all concentrations. Genes from phagosome, lysosome, and sphingolipid metabolism pathways were enriched and could be responsible for sperm maturation. The findings from this study demonstrate that DDG in the aquatic environment can cause male bias and accelerate sperm maturation in zebrafish, resulting in potential high ecological risks to fish populations.
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Affiliation(s)
- Wen-Jun Shi
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
- State Key Laboratory of Organic Geochemistry, Chinese Academy of Sciences (CAS) Research Centre of Pearl River Delta (PRD) Environmental Pollution and Control, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou , Guangdong 510640 , People's Republic of China
| | - Yu-Xia Jiang
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
- State Key Laboratory of Organic Geochemistry, Chinese Academy of Sciences (CAS) Research Centre of Pearl River Delta (PRD) Environmental Pollution and Control, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou , Guangdong 510640 , People's Republic of China
| | - Guo-Yong Huang
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
| | - Jian-Liang Zhao
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
| | - Jin-Na Zhang
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
- State Key Laboratory of Organic Geochemistry, Chinese Academy of Sciences (CAS) Research Centre of Pearl River Delta (PRD) Environmental Pollution and Control, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou , Guangdong 510640 , People's Republic of China
| | - You-Sheng Liu
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
| | - Ling-Tian Xie
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
| | - Guang-Guo Ying
- The Environmental Research Institute, Ministry of Education Key Laboratory of Environmental Theoretical Chemistry , South China Normal University , Guangzhou , Guangdong 510006 , People's Republic of China
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34
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Hou LP, Chen H, Tian CE, Shi WJ, Liang Y, Wu RR, Fang XW, Zhang CP, Liang YQ, Xie L. The progestin norethindrone affects sex differentiation and alters transcriptional profiles of genes along the hypothalamic-pituitary-gonadal and hypothalamic-pituitary-adrenal axes in juvenile zebrafish Dario renio. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 201:31-39. [PMID: 29859405 DOI: 10.1016/j.aquatox.2018.05.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/25/2018] [Accepted: 05/26/2018] [Indexed: 06/08/2023]
Abstract
Natural and synthetic progestins may pose a threat to wild fish populations living in receiving waters. In this study, the effects of norethindrone (NET) on the sex differentiation of zebrafish (Dario renio) and the mechanisms underlying these effects were investigated. Juvenile zebrafish (20 days post fertilization, pdf) were exposed to environmentally relevant concentrations (5, 50, 500, and 1000 ng L-1) for 45 d. Sex ratio of the NET-exposed populations, the histology of the gonads and the transcriptional profile of the regulatory genes involved in sex differentiation and steroidogenesis were examined. The results showed that a significantly higher ratio of male/female was induced in the zebrafish populations exposed to NET at concentrations higher than 32.3 ng L-1. Exposure to NET caused acceleration of sexual mature in males and a delay in ovary maturation in female zebrafish. Among the genes regulating sexual differentiation, transcripts of Dmrt1 showed a dose-dependent increase while transcripts of Figa and Fox12 showed a dose-dependent decrease in response to exposure to NET. For genes regulating the steroidogenesis, the expressions of Cyp11a1, Cyp17, Cyp19a1a, and Cyp11b were significantly down-regulated by exposure to NET, while Hsd17b3 expression was significantly up-regulated by exposure to NET at 421.3 and 892.9 ng L-1. For the receptor genes in the gonads, the transcriptional expression of Pgr, Ar, and Mr was significantly up-regulated at 421.3 and 892.9 ng L-1 of NET. For genes involved in the hypothalamic-pituitary axis, the transcriptional expression of Gnrh3 and Pomc was significantly up-regulated by exposure to NET with the exception for Gnrh3 at 4.2 ng L-1. The results demonstrated that exposure to NET at the juvenile stage could affect gonad differentiation and sex ratio, which might be accounted for by the alterations of the transcriptional expressions of genes along the hypothalamic-pituitary-gonadal (HPG) and hypothalamic-pituitary-adrenal (HPA) axes.
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Affiliation(s)
- Li-Ping Hou
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, China
| | - Hongxing Chen
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Chang-En Tian
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, China.
| | - Wen-Jun Shi
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Ye Liang
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, China
| | - Rong-Rong Wu
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, China
| | - Xu-Wen Fang
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, China
| | - Cui-Ping Zhang
- School of Life Sciences, Guangzhou University, Guangzhou, 510006, China
| | - Yan-Qiu Liang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean Universtiy, Zhangjiang, 524088, China
| | - Lingtian Xie
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China.
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35
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Yang Q, Yang X, Liu J, Chen Y, Shen S. Effects of exposure to BPF on development and sexual differentiation during early life stages of zebrafish (Danio rerio). Comp Biochem Physiol C Toxicol Pharmacol 2018; 210:44-56. [PMID: 29758382 DOI: 10.1016/j.cbpc.2018.05.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 04/23/2018] [Accepted: 05/08/2018] [Indexed: 01/25/2023]
Abstract
Bisphenol F (BPF) has become a predominant bisphenol contaminant in recent years. It has significant estrogenic properties in both in vivo and in vitro studies. We have previously studied the disrupting mechanisms of BPF on the hypothalamic-pituitary-gonadal axis of adult zebrafish. However, the effects of BPF exposure on development and sexual differentiation of zebrafish embryos/larvae remain unclear. To determine the effects of BPF on the critical stage of sex differentiation in zebrafish, zebrafish embryos/larvae were exposed to 1, 10, 100, and 1000 μg/L BPF from fertilization to 60 days post-fertilization (dpf). Developmental malformations were induced by exposure to BPF from 2 h post-fertilization (hpf), with a LC50 of 10,030 μg/L at 96 hpf and 9391 μg/L at 120 hpf. Long-term exposure during sex differentiation tended to result in a female sex ratio bias. Histological analyses at 60 dpf indicated that the development of ovo-testes and immature ovaries was induced by 100 and 1000 μg/L BPF. Homogenate testosterone levels decreased and 17β-estradiol levels increased in zebrafish in a concentration-dependent manner. BPF exposure suppressed gene expression of double sex, Mab3-related transcription factor 1(dmrt1), fushi tarazu factor 1d (ff1d), sry-box containing gene 9a (sox9a) and anti-Mullerian hormone (amh); induced expression of the forkhead box L2 transcription factor (foxl2), leading to increased expression of aromatase (cyp19a1a), which promoted production of estrogens, and further caused phenotypic feminization of zebrafish. These results suggest that developmental exposure to BPF has adverse effects on sexual differentiation, and the results were useful for a BPF risk assessment.
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Affiliation(s)
- Qian Yang
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China; The College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Xianhai Yang
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
| | - Jining Liu
- Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China.
| | - Yingwen Chen
- The College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China.
| | - Shubao Shen
- The College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China
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36
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Zhang Y, Liu B, Zhang Z, Wang L, Guo H, Li Z, He P, Liu Z, Fang J. Differential Expression of P450 Genes and nAChR Subunits Associated With Imidacloprid Resistance in Laodelphax striatellus (Hemiptera: Delphacidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2018; 111:1382-1387. [PMID: 29617902 DOI: 10.1093/jee/toy051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Indexed: 05/27/2023]
Abstract
Imidacloprid is a key insecticide used for controlling sucking insect pests, including the small brown planthopper (Laodelphax striatellus, Fallén) (Hemiptera: Delphacidae), an important agricultural pest of rice. A strain of L. striatellus (YN-ILR) developed 21-fold resistance when selected with imidacloprid on a susceptible YN strain. An in vitro study on piperonyl butoxide synergism indicated that enhanced detoxification mediated by cytochrome P450s contributed to imidacloprid resistance to some extent, and multiple P450 genes showed altered expression in the imidacloprid-resistant YN-ILR strain compared with the susceptible YN strain (CYP425B1-CYP6BD10 had 1.51- to 11.45-fold higher expression, CYP4CE2-CYP4DD1V2 had 0.12- to 0.57-fold lower expression). While there were no mutations in target nicotinic acetylcholine receptor (nAChR) genes, subunits of Lsα1, Lsβ1, and Lsβ3 in the YN-ILR strain showed 3.86-, 4.39-, and 2.59-fold higher expression and Lsa8 displayed 0.38-fold lower expression than the YN strain. Moreover, 21-fold moderate imidacloprid resistance in individuals of L. striatellus did not produce a fitness cost. The findings suggest that L. striatellus has the capacity to develop resistance to imidacloprid through P450 detoxification and potential target nAChR expression changes, and moderate imidacloprid resistance was not associated with a fitness cost.
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Affiliation(s)
- Yueliang Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Baosheng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Zhichun Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Lihua Wang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Huifang Guo
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Peng He
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Zewen Liu
- Key Laboratory of Monitoring and Management of Plant Disease and Insects, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Jichao Fang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
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37
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Ruivo R, Capitão A, Castro LFC, Santos MM. The cycling gonad: retinoic-acid synthesis and degradation patterns during adult zebrafish Danio rerio oogenesis. JOURNAL OF FISH BIOLOGY 2018; 92:1051-1064. [PMID: 29465800 DOI: 10.1111/jfb.13564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 01/17/2018] [Indexed: 06/08/2023]
Abstract
The expression pattern of genes coding for enzymes of the retinoic acid (RA) synthetic and degradation pathways was characterized in adult female zebrafish Danio rerio. Females were conditioned until maturation and post-spawn expression dynamics were determined. A striking upregulation of cyp26b1, but not cyp26a1, was observed following egg deposition, decreasing to initial levels during recovery. A similar, yet lower, fluctuation was observed for aldh1a2 and rdh10a, the enzymes participating in the two-step RA biosynthesis cascade. The present work highlights the dynamics of the adult D. rerio oogenesis and uncovers novel, yet elusive, metabolic contributors. Possible compartmentalized roles for the different gene paralogue isoforms are discussed.
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Affiliation(s)
- R Ruivo
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, U. Porto, Terminal de Cruzeiros do Porto de Leixões, Avenue General Norton de Matos S/N, 4450-208, Matosinhos, Portugal
| | - A Capitão
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, U. Porto, Terminal de Cruzeiros do Porto de Leixões, Avenue General Norton de Matos S/N, 4450-208, Matosinhos, Portugal
- FCUP - Faculty of Sciences, Department of Biology, U. Porto, Rua do Campo Alegre 1021/1055, 4169-007, Porto, Portugal
| | - L F C Castro
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, U. Porto, Terminal de Cruzeiros do Porto de Leixões, Avenue General Norton de Matos S/N, 4450-208, Matosinhos, Portugal
- FCUP - Faculty of Sciences, Department of Biology, U. Porto, Rua do Campo Alegre 1021/1055, 4169-007, Porto, Portugal
| | - M M Santos
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, U. Porto, Terminal de Cruzeiros do Porto de Leixões, Avenue General Norton de Matos S/N, 4450-208, Matosinhos, Portugal
- FCUP - Faculty of Sciences, Department of Biology, U. Porto, Rua do Campo Alegre 1021/1055, 4169-007, Porto, Portugal
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Tsakogiannis A, Manousaki T, Lagnel J, Sterioti A, Pavlidis M, Papandroulakis N, Mylonas CC, Tsigenopoulos CS. The transcriptomic signature of different sexes in two protogynous hermaphrodites: Insights into the molecular network underlying sex phenotype in fish. Sci Rep 2018; 8:3564. [PMID: 29476120 PMCID: PMC5824801 DOI: 10.1038/s41598-018-21992-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 02/14/2018] [Indexed: 01/22/2023] Open
Abstract
Sex differentiation is a puzzling problem in fish due to the variety of reproductive systems and the flexibility of their sex determination mechanisms. The Sparidae, a teleost family, reflects this remarkable diversity of sexual mechanisms found in fish. Our aim was to capture the transcriptomic signature of different sexes in two protogynous hermaphrodite sparids, the common pandora Pagellus erythrinus and the red porgy Pagrus pagrus in order to shed light on the molecular network contributing to either the female or the male phenotype in these organisms. Through RNA sequencing, we investigated sex-specific differences in gene expression in both species' brains and gonads. The analysis revealed common male and female specific genes/pathways between these protogynous fish. Whereas limited sex differences found in the brain indicate a sexually plastic tissue, in contrast, the great amount of sex-biased genes observed in gonads reflects the functional divergence of the transformed tissue to either its male or female character. Α common "crew" of well-known molecular players is acting to preserve either sex identity of the gonad in these fish. Lastly, this study lays the ground for a deeper understanding of the complex process of sex differentiation in two species with an evolutionary significant reproductive system.
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Affiliation(s)
- A Tsakogiannis
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (H.C.M.R.), Heraklion, Greece
- Department of Biology, University of Crete, Heraklion, Greece
| | - T Manousaki
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (H.C.M.R.), Heraklion, Greece
| | - J Lagnel
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (H.C.M.R.), Heraklion, Greece
| | - A Sterioti
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (H.C.M.R.), Heraklion, Greece
| | - M Pavlidis
- Department of Biology, University of Crete, Heraklion, Greece
| | - N Papandroulakis
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (H.C.M.R.), Heraklion, Greece
| | - C C Mylonas
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (H.C.M.R.), Heraklion, Greece
| | - C S Tsigenopoulos
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (H.C.M.R.), Heraklion, Greece.
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Berto-Júnior C, de Carvalho DP, Soares P, Miranda-Alves L. Tributyltin and Zebrafish: Swimming in Dangerous Water. Front Endocrinol (Lausanne) 2018; 9:152. [PMID: 29692757 PMCID: PMC5903028 DOI: 10.3389/fendo.2018.00152] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 03/20/2018] [Indexed: 11/13/2022] Open
Abstract
Zebrafish has been established as a reliable biological model with important insertion in academy (morphologic, biochemical, and pathophysiological studies) and pharmaceutical industry (toxicology and drug development) due to its molecular complexity and similar systems biology that recapitulate those from other organisms. Considering the toxicological aspects, many efforts using zebrafish models are being done in order to elucidate the effects of endocrine disruptors, and some of them are focused on tributyltin (TBT) and its mechanism of action. TBT is an antifouling agent applied in ship's hull that is constantly released into the water and absorbed by marine organisms, leading to bioaccumulation and biomagnification effects. Thus, several findings of malformations and changes in the normal biochemical and physiologic aspects of these marine animals have been related to TBT contamination. In the present review, we have compiled the most significant studies related to TBT effects in zebrafish, also taking into consideration the effects found in other study models.
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Affiliation(s)
- Clemilson Berto-Júnior
- Grupo de Pesquisa, Desenvolvimento e Inovação em Endocrinologia Experimental-GPDIEEx, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório Integrado de Ciências Farmacêuticas (LICFAR), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Denise Pires de Carvalho
- Grupo de Pesquisa, Desenvolvimento e Inovação em Endocrinologia Experimental-GPDIEEx, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Endocrinologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paula Soares
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP) – Cancer Signaling and Metabolism, Porto, Portugal
- Faculdade de Medicina, Universidade do Porto, Porto, Portugal
- Departamento de Patologia, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Leandro Miranda-Alves
- Grupo de Pesquisa, Desenvolvimento e Inovação em Endocrinologia Experimental-GPDIEEx, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Endocrinologia, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- *Correspondence: Leandro Miranda-Alves, ,
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Cuco AP, Santos JI, Abrantes N, Gonçalves F, Wolinska J, Castro BB. Concentration and timing of application reveal strong fungistatic effect of tebuconazole in a Daphnia-microparasitic yeast model. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 191:141-163. [PMID: 29096087 DOI: 10.1016/j.aquatox.2017.08.005] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 07/26/2017] [Accepted: 08/07/2017] [Indexed: 05/13/2023]
Abstract
Given the importance of pollutant effects on host-parasite relationships and disease spread, the main goal of this study was to assess the influence of different exposure scenarios for the fungicide tebuconazole (concentration×timing of application) on a Daphnia-microparasitic yeast experimental system. Previous results had demonstrated that tebuconazole is able to suppress Metschnikowia bicuspidata infection at ecologically-relevant concentrations; here, we aimed to obtain an understanding of the mechanism underlying the anti-parasitic (fungicidal or fungistatic) action of tebuconazole. We exposed the Daphnia-yeast system to four nominal tebuconazole concentrations at four timings of application (according to the predicted stage of parasite development), replicated on two Daphnia genotypes, in a fully crossed experiment. An "all-or-nothing" effect was observed, with tebuconazole completely suppressing infection from 13.5μgl-1 upwards, independent of the timing of tebuconazole application. A follow-up experiment confirmed that the suppression of infection occurred within a narrow range of tebuconazole concentrations (3.65-13.5μgl-1), although a later application of the fungicide had to be compensated for by a slight increase in concentration to elicit the same anti-parasitic effect. The mechanism behind this anti-parasitic effect seems to be the inhibition of M. bicuspidata sporulation, since tebuconazole was effective in preventing ascospore production even when applied at a later time. However, this fungicide also seemed to affect the vegetative growth of the yeast, as demonstrated by the enhanced negative effect of the parasite (increasing mortality in one of the host genotypes) at a later time of application of tebuconazole, when no signs of infection were observed. Fungicide contamination can thus affect the severity and spread of disease in natural populations, as well as the inherent co-evolutionary dynamics in host-parasite systems.
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Affiliation(s)
- Ana P Cuco
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal.
| | - Joana I Santos
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal
| | - Nelson Abrantes
- CESAM, University of Aveiro, Aveiro, Portugal; Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
| | - Fernando Gonçalves
- Department of Biology, University of Aveiro, Aveiro, Portugal; CESAM, University of Aveiro, Aveiro, Portugal
| | - Justyna Wolinska
- Department of Ecosystem Research, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany; Department of Biology, Chemistry, Pharmacy, Institute of Biology, Freie Universität Berlin, Berlin, Germany
| | - Bruno B Castro
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
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Leerberg DM, Sano K, Draper BW. Fibroblast growth factor signaling is required for early somatic gonad development in zebrafish. PLoS Genet 2017; 13:e1006993. [PMID: 28873404 PMCID: PMC5600409 DOI: 10.1371/journal.pgen.1006993] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 09/15/2017] [Accepted: 08/21/2017] [Indexed: 12/22/2022] Open
Abstract
The vertebrate ovary and testis develop from a sexually indifferent gonad. During early development of the organism, primordial germ cells (the gamete lineage) and somatic gonad cells coalesce and begin to undergo growth and morphogenesis to form this bipotential gonad. Although this aspect of development is requisite for a fertile adult, little is known about the genetic regulation of early gonadogenesis in any vertebrate. Here, we provide evidence that fibroblast growth factor (Fgf) signaling is required for the early growth phase of a vertebrate bipotential gonad. Based on mutational analysis in zebrafish, we show that the Fgf ligand 24 (Fgf24) is required for proliferation, differentiation, and morphogenesis of the early somatic gonad, and as a result, most fgf24 mutants are sterile as adults. Additionally, we describe the ultrastructural elements of the early zebrafish gonad and show that distinct somatic cell populations can be identified soon after the gonad forms. Specifically, we show that fgf24 is expressed in an epithelial population of early somatic gonad cells that surrounds an inner population of mesenchymal somatic gonad cells that are in direct contact with the germ cells, and that fgf24 is required for stratification of the somatic tissue. Furthermore, based on gene expression analysis, we find that differentiation of the inner mesenchymal somatic gonad cells into functional cell types in the larval and early juvenile-stage gonad is dependent on Fgf24 signaling. Finally, we argue that the role of Fgf24 in zebrafish is functionally analogous to the role of tetrapod FGF9 in early gonad development.
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Affiliation(s)
- Dena M. Leerberg
- Department of Molecular and Cellular Biology, University of California, Davis, California, United States of America
| | - Kaori Sano
- Department of Molecular and Cellular Biology, University of California, Davis, California, United States of America
- Graduate school of Science and Technologies, Sophia University, Tokyo, Tokyo, Japan
| | - Bruce W. Draper
- Department of Molecular and Cellular Biology, University of California, Davis, California, United States of America
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Yin Y, Tang H, Liu Y, Chen Y, Li G, Liu X, Lin H. Targeted Disruption of Aromatase Reveals Dual Functions of cyp19a1a During Sex Differentiation in Zebrafish. Endocrinology 2017; 158:3030-3041. [PMID: 28575219 DOI: 10.1210/en.2016-1865] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 05/24/2017] [Indexed: 11/19/2022]
Abstract
Aromatase (encoded by the cyp19a1a and cyp19a1b genes) plays a central role in sex differentiation in fish, but its precise roles during sex differentiation are still largely unknown. Here, we systematically generated cyp19a1a and cyp19a1b mutant lines as well as a cyp19a1a;cyp19a1b double mutant line in zebrafish using transcription activatorlike effector nucleases. Our results showed that cyp19a1a mutants and cyp19a1a;cyp19a1b double mutants, but not cyp19a1b mutants, had impaired sex differentiation, and all cyp19a1a mutants and cyp19a1a;cyp19a1b double mutants were males. During sex differentiation, the ovary-like gonads were not observed and the male sex differentiation program was delayed in the cyp19a1a-null fish, and these phenotypes could be partially rescued by 17β-estradiol treatment. Gene expression analysis indicated that male and female sex differentiation-related genes were significantly decreased in the cyp19a1a mutant. Collectively, our results revealed dual functions of the cyp19a1a gene during sex differentiation: cyp19a1a is not only indispensable for female sex differentiation but also required for male sex differentiation.
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Affiliation(s)
- Yike Yin
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Haipei Tang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yun Liu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yu Chen
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Gaofei Li
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiaochun Liu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
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Dai X, Shu Y, Lou Q, Tian Q, Zhai G, Song J, Lu S, Yu H, He J, Yin Z. Tdrd12 Is Essential for Germ Cell Development and Maintenance in Zebrafish. Int J Mol Sci 2017; 18:ijms18061127. [PMID: 28590408 PMCID: PMC5485951 DOI: 10.3390/ijms18061127] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 04/20/2017] [Accepted: 05/18/2017] [Indexed: 01/03/2023] Open
Abstract
The regularity of Piwi-interacting RNA (piRNA) biogenesis is crucial to germline development. Functioning as Piwi-interacting proteins, Tudor domain-related proteins (Tdrds) have been demonstrated to be involved in spermatogenesis and the piRNA pathway. In this study, zebrafish tdrd12 was identified, and the maternal and germ cell-specific expression patterns of zebrafish tdrd12 were observed. Utilizing TALEN (transcription activator-like effector nuclease) techniques, two independent tdrd12 mutant zebrafish lines were generated. Although no defects were found during the generation of the primordial germ cells (PGCs) in the tdrd12-null fish progenies obtained from the heterozygous tdrd12 mutant parents, all Tdrd12-deficient fish developed into infertile males. The reduced numbers and eventually loss of the germ cells by 35 days post fertilization (dpf) led to masculinization and infertility of the Tdrd12-deficient fish. Meiosis defects of the germ cells in the tdrd12 mutants during the gonad-transitioning period were observed, revealing the indispensable functions of Tdrd12 in gametogenesis. Our studies demonstrated that zebrafish Tdrd12 is essential for germ cell development and maintenance.
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Affiliation(s)
- Xiangyan Dai
- Department of Medical Cell Biology and Genetics, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China.
| | - Yuqin Shu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Qiyong Lou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Qiang Tian
- Department of Medical Cell Biology and Genetics, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China.
| | - Gang Zhai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Jia Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Suxiang Lu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Hong Yu
- Department of Medical Cell Biology and Genetics, College of Preclinical Medicine, Southwest Medical University, Luzhou 646000, China.
| | - Jiangyan He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Zhan Yin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Yang YJ, Wang Y, Li Z, Zhou L, Gui JF. Sequential, Divergent, and Cooperative Requirements of Foxl2a and Foxl2b in Ovary Development and Maintenance of Zebrafish. Genetics 2017; 205:1551-1572. [PMID: 28193729 PMCID: PMC5378113 DOI: 10.1534/genetics.116.199133] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 02/09/2017] [Indexed: 12/11/2022] Open
Abstract
Foxl2 is essential for mammalian ovary maintenance. Although sexually dimorphic expression of foxl2 was observed in many teleosts, its role and regulative mechanism in fish remained largely unclear. In this study, we first identified two transcript variants of foxl2a and its homologous gene foxl2b in zebrafish, and revealed their specific expression in follicular layer cells in a sequential and divergent fashion during ovary differentiation, maturation, and maintenance. Then, homozygous foxl2a mutants (foxl2a-/-) and foxl2b mutants (foxl2b-/-) were constructed and detailed comparisons, such as sex ratio, gonadal histological structure, transcriptome profiling, and dynamic expression of gonadal development-related genes, were carried out. Initial ovarian differentiation and oocyte development occur normally both in foxl2a-/- and foxl2b-/- mutants, but foxl2a and foxl2b disruptions result in premature ovarian failure and partial sex reversal, respectively, in adult females. In foxl2a-/- female mutants, sox9a-amh/cyp19a1a signaling was upregulated at 150 days postfertilization (dpf) and subsequently oocyte apoptosis was triggered after 180 dpf. In contrast, dmrt1 expression was greater at 105 dpf and increased several 100-fold in foxl2b-/- mutated ovaries at 270 dpf, along with other testis-related genes. Finally, homozygous foxl2a-/-/foxl2b-/- double mutants were constructed in which complete sex reversal occurs early and testis-differentiation genes robustly increase at 60 dpf. Given mutual compensation between foxl2a and foxl2b in foxl2b-/- and foxl2a-/- mutants, we proposed a model in which foxl2a and foxl2b cooperate to regulate zebrafish ovary development and maintenance, with foxl2b potentially having a dominant role in preventing the ovary from differentiating as testis, as compared to foxl2a.
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Affiliation(s)
- Yan-Jing Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Graduate University of the Chinese Academy of Sciences, Wuhan 430072, China
| | - Yang Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhi Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Li Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Jian-Fang Gui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Abstract
How sex is determined has been one of the most intriguing puzzles in biology since antiquity. Although a fundamental process in most metazoans, there seems to be myriad of ways in which sex can be determined - from genetic to environmental sex determination. This variation is limited mainly to upstream triggers with the core of sex determination pathway being conserved. Zebrafish has gained prominence as a vertebrate model system to study development and disease. However, very little is known about its primary sex determination mechanism. Here we review our current understanding of the sex determination in zebrafish. Zebrafish lack identifiable heteromorphic sex chromosomes and sex is determined by multiple genes, with some influence from the environment. Recently, chromosome 4 has been identified as sex chromosome along with few sex-linked loci on chromosomes 5 and 16. The identities of candidate sex-linked genes, however, have remained elusive. Sex in zebrafish is also influenced by the number of meiotic oocytes in the juvenile ovary, which appear to instruct retention of the ovarian fate. The mechanism and identity of this instructive signal remain unknown. We hypothesize that sex in zebrafish is a culmination of combinatorial effects of the genome, germ cells and the environment with inputs from epigenetic factors translating the biological meaning of this interaction.
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Affiliation(s)
- A Nagabhushana
- Centre for Cellular and Molecular Biology, Council of Scientific and industrial Research, Uppal Road, Hyderabad 500007, India
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46
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Chen J, Wang X, Ge X, Wang D, Wang T, Zhang L, Tanguay RL, Simonich M, Huang C, Dong Q. Chronic perfluorooctanesulphonic acid (PFOS) exposure produces estrogenic effects in zebrafish. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 218:702-708. [PMID: 27496563 DOI: 10.1016/j.envpol.2016.07.064] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/27/2016] [Accepted: 07/28/2016] [Indexed: 05/20/2023]
Abstract
Perfluorooctanesulphonic acid (PFOS) is a ubiquitous contaminant in the aquatic environment and our earlier studies demonstrated that chronic PFOS exposures lead to a female-biased sex ratio and decreased sperm quality in male zebrafish. The underlying mechanism for these reproductive effects is unknown. In the present study, 8 h post-fertilization (hpf) zebrafish were exposed to PFOS at 250 μg/L for 5 months, and the levels of sex hormones, expression of sex determination related genes, and histological and ultrastructural changes of gonads were fully characterized. During the sex differentiation period, we observed elevated estradiol (E2) and decreased testosterone (T) levels in whole tissue homogenates from PFOS exposed juveniles. In fully mature adult male fish, serum E2 levels were slightly increased, however, the estrogen receptor alpha (esr1) was significantly elevated in PFOS treated male gonads. Histological and electron microscopic examinations revealed structural changes in the gonads of PFOS exposed male and female adult zebrafish. In summary, chronic PFOS exposure disrupts sex hormone level and related gene expression and impairs gonadal development, which may contribute to the previously reported PFOS reproductive toxicity.
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Affiliation(s)
- Jiangfei Chen
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Xiaotong Wang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Xiaoqing Ge
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Dingding Wang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Ting Wang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Lingnan Zhang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Robert L Tanguay
- Environmental and Molecular Toxicology, The Sinnhuber Aquatic Research Laboratory and the Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97333, USA
| | - Michael Simonich
- Environmental and Molecular Toxicology, The Sinnhuber Aquatic Research Laboratory and the Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97333, USA
| | - Changjiang Huang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Qiaoxiang Dong
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, China.
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Dor L, Shirak A, Rosenfeld H, Ashkenazi IM, Band MR, Korol A, Ronin Y, Seroussi E, Weller JI, Ron M. Identification of the sex-determining region in flathead grey mullet (Mugil cephalus). Anim Genet 2016; 47:698-707. [PMID: 27611243 DOI: 10.1111/age.12486] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2016] [Indexed: 11/29/2022]
Abstract
Elucidation of the sex-determination mechanism in flathead grey mullet (Mugil cephalus) is required to exploit its economic potential by production of genetically determined monosex populations and application of hormonal treatment to parents rather than to the marketed progeny. Our objective was to construct a first-generation linkage map of the M. cephalus in order to identify the sex-determining region and sex-determination system. Deep-sequencing data of a single male was assembled and aligned to the genome of Nile tilapia (Oreochromis niloticus). A total 245 M. cephalus microsatellite markers were designed, spanning the syntenic tilapia genome assembly at intervals of 10 Mb. In the mapping family of full-sib progeny, 156 segregating markers were used to construct a first-generation linkage map of 24 linkage groups (LGs), corresponding to the number of chromosomes. The linkage map spanned approximately 1200 cM with an average inter-marker distance of 10.6 cM. Markers segregating on LG9 in two independent mapping families showed nearly complete concordance with gender (R2 = 0.95). The sex determining locus was fine mapped within an interval of 8.6 cM on LG9. The sex of offspring was determined only by the alleles transmitted from the father, thus indicating an XY sex-determination system.
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Affiliation(s)
- L Dor
- Institute of Animal Science, Agricultural Research Organization, Bet Dagan, 50250, Israel.,Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - A Shirak
- Institute of Animal Science, Agricultural Research Organization, Bet Dagan, 50250, Israel
| | - H Rosenfeld
- National Center for Mariculture, Israel Oceanographic and Limnological Research, Eilat, 88112, Israel
| | - I M Ashkenazi
- National Center for Mariculture, Israel Oceanographic and Limnological Research, Eilat, 88112, Israel
| | - M R Band
- The Carver Biotechnology Center, University of Illinois, Urbana, IL, 61801, USA
| | - A Korol
- Faculty of Science, Institute of Evolution, University Haifa, Haifa, 31905, Israel
| | - Y Ronin
- Faculty of Science, Institute of Evolution, University Haifa, Haifa, 31905, Israel
| | - E Seroussi
- Institute of Animal Science, Agricultural Research Organization, Bet Dagan, 50250, Israel
| | - J I Weller
- Institute of Animal Science, Agricultural Research Organization, Bet Dagan, 50250, Israel
| | - M Ron
- Institute of Animal Science, Agricultural Research Organization, Bet Dagan, 50250, Israel.
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Anatomical features for the adequate choice of experimental animal models in biomedicine: I. Fishes. Ann Anat 2016; 205:75-84. [DOI: 10.1016/j.aanat.2016.02.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 12/01/2015] [Accepted: 02/01/2016] [Indexed: 11/21/2022]
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Ribas L, Robledo D, Gómez-Tato A, Viñas A, Martínez P, Piferrer F. Comprehensive transcriptomic analysis of the process of gonadal sex differentiation in the turbot (Scophthalmus maximus). Mol Cell Endocrinol 2016; 422:132-149. [PMID: 26586209 DOI: 10.1016/j.mce.2015.11.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 11/03/2015] [Accepted: 11/03/2015] [Indexed: 10/22/2022]
Abstract
The turbot is a flatfish with a ZW/ZZ sex determination system but with a still unknown sex determining gene(s), and with a marked sexual growth dimorphism in favor of females. To better understand sexual development in turbot we sampled young turbot encompassing the whole process of gonadal differentiation and conducted a comprehensive transcriptomic study on its sex differentiation using a validated custom oligomicroarray. Also, the expression profiles of 18 canonical reproduction-related genes were studied along gonad development. The expression levels of gonadal aromatase cyp19a1a alone at three months of age allowed the accurate and early identification of sex before the first signs of histological differentiation. A total of 56 differentially expressed genes (DEG) that had not previously been related to sex differentiation in fish were identified within the first three months of age, of which 44 were associated with ovarian differentiation (e.g., cd98, gpd1 and cry2), and 12 with testicular differentiation (e.g., ace, capn8 and nxph1). To identify putative sex determining genes, ∼4.000 DEG in juvenile gonads were mapped and their positions compared with that of previously identified sex- and growth-related quantitative trait loci (QTL). Although no genes mapped to the previously identified sex-related QTLs, two genes (foxl2 and 17βhsd) of the canonical reproduction-related genes mapped to growth-QTLs in linkage group (LG) 15 and LG6, respectively, suggesting that these genes are related to the growth dimorphism in this species.
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Affiliation(s)
- L Ribas
- Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain
| | - D Robledo
- Departamento de Genética. Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain
| | - A Gómez-Tato
- Departamento de Matemática Aplicada, Facultad de Matemáticas, Universidad de Santiago de Compostela, 15781, Santiago de Compostela, Spain
| | - A Viñas
- Departamento de Genética. Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain
| | - P Martínez
- Departamento de Genética. Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain
| | - F Piferrer
- Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain.
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