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Li M, Zhang N, Huang Y, Pan CG, Dong Z, Lin Z, Li C, Jiang YX, Liang YQ. The effects of 17α-methyltestosterone on gonadal histology and gene expression along hypothalamic-pituitary-gonadal axis, germ cells, sex determination, and hypothalamus-pituitary-thyroid axis in zebrafish (Danio rerio). ENVIRONMENTAL TOXICOLOGY 2024; 39:1494-1504. [PMID: 37994244 DOI: 10.1002/tox.24044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 07/22/2023] [Accepted: 11/05/2023] [Indexed: 11/24/2023]
Abstract
As a synthetic androgen, 17α-methyltestosterone (MT) is widely used in aquaculture to induce sex reversal and may pose a potential risk to aquatic organisms. This ecological risk has attracted the attention of many scholars, but it is not comprehensive enough. Thus, the adverse effects of MT on zebrafish (Danio rerio) were comprehensively evaluated from gonadal histology, as well as the mRNA expression levels of 47 genes related to hypothalamic-pituitary-gonadal (HPG) axis, germ cell differentiation, sex determination, and hypothalamus-pituitary-thyroid (HPT) axis. Adult zebrafish with a female/male ratio of 5:7 were exposed to a solvent control (0.001% dimethyl sulfoxide) and three measured concentrations of MT (5, 51 and 583 ng/L) for 50 days. The results showed that MT had no significant histological effects on the ovaries of females, but the frequency of late-mature oocytes (LMO) showed a downward trend, indicating that MT could induce ovarian suppression to a certain extent. The transcriptional expression of activating transcription factor 4b1 (atf4b1), activating transcription factor 4b2 (atf4b2), calcium/calmodulin-dependent protein kinase II delta 1 (camk2d1), calcium/calmodulin-dependent protein kinase II delta 2 (camk2d2) and calcium/calmodulin-dependent protein kinase II inhibitor 2 (camk2n2) genes in the brain of females increased significantly at all treatment groups of MT, and the mRNA expression of forkhead box L2a (foxl2) and ovarian cytochrome P450 aromatase (cyp19a1a) genes in the ovaries were down-regulated by 5 and 583 ng/L group, which would translate into inhibition of oocyte development. As compared to females, MT had relatively little effects on the reproductive system of males, and only the transcriptional alterations of synaptonemal complex protein 3 (sycp3) and 17-alpha-hydroxylase/17,20-lyase (cyp17) genes were observed in the testes, not enough to affect testicular histology. In addition, MT at all treatments strongly increased corticotropin-releasing hormone (crh) transcript in the brain of females, as well as deiodinase 2 (dio2) transcript in the brain of males. The paired box protein 8 (pax8) gene was significantly decreased at 51 or 583 ng/L of MT in both female and male brains. The above results suggest that MT can pose potential adverse effects on the reproductive and thyroid endocrine system of fish.
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Affiliation(s)
- Minchun Li
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, People's Republic of China
| | - Ning Zhang
- College of Fishery, Guangdong Ocean University, Zhanjiang, People's Republic of China
| | - Yiting Huang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, People's Republic of China
| | - Chang-Gui Pan
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning, People's Republic of China
| | - Zhongdian Dong
- College of Fishery, Guangdong Ocean University, Zhanjiang, People's Republic of China
| | - Zhong Lin
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, People's Republic of China
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, People's Republic of China
| | - Chengyong Li
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, People's Republic of China
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, People's Republic of China
| | - Yu-Xia Jiang
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, China
| | - Yan-Qiu Liang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, People's Republic of China
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, People's Republic of China
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Duan X, Jia X, Liang K, Huang F, Shan J, Chen H, Ruan X, Li L, Zhao H, Wang Q. Liposome-Encapsulated Rec8 and Dmrt1 Plasmids Induce Red-Spotted Grouper (Epinephelus akaara) Testis Maturation. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2022; 24:345-353. [PMID: 35303207 DOI: 10.1007/s10126-022-10111-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
In fish, the maturity of gonads plays an important role in the development and reproduction of the population, and it also dictates the success of captive breeding. Therefore, finding ways to promote gonadal maturation is an important goal in aquaculture. In this study, we injected recombinant dmrt1 and rec8 overexpression plasmids packaged in liposomes into the immature testis of red-spotted grouper (Epinephelus akaara) and measured the expression of Dmrt1 and Rec8 protein in vivo. Gonadosomatic index (GSI) and gonadal histology analyses showed that the testis developed from the immature to the mature state within 7 days after plasmid injection. Additionally, the spermatozoa concentration and motility in plasmid-injected fish was the same as that of naturally mature fish. These results provided evidence that delivery of dmrt1 and rec8 expression plasmids into the testis via injection induced testis maturation in vivo.
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Affiliation(s)
- Xuzhuo Duan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Xianze Jia
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Kaishan Liang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Fengqi Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jinhong Shan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Huitao Chen
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Xinhe Ruan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Lihua Li
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Huihong Zhao
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, Guangzhou, 510642, China.
| | - Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
- University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region On Marine Bioresource Conservation and Exploitation, Guangzhou, 510642, China.
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Othman R, Ron XJ, Yao H, O'Bryant P, Rapp D, Pei JC, Wu HJ, Wang HP. The effect of methyltestosterone (MT) on sex differentiation and growth in juvenile yellow perch (Perca flavescens). FISH PHYSIOLOGY AND BIOCHEMISTRY 2022; 48:161-171. [PMID: 35039993 DOI: 10.1007/s10695-021-01038-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 11/28/2021] [Indexed: 06/14/2023]
Abstract
A study was conducted to evaluate the gonad differentiation of juvenile yellow perch (YP, Perca flavencens) and determine the latest labile period related to hormone treatment. Juvenile fish were subjected to two dietary concentrations of methyltestosterone (MT; 20 and 50 mg/kg feed) for 60 days in three (3) age groups of 38-, 46-, and 67-days post-hatching (dph), where control group were fed with standard commercial feed. Following a 10-month on-growing period, sex phenotypes were determined by gross and histological gonad morphology. Results showed the juvenile YP responded to the exogenous hormone when it was applied at 38 dph for both 20 and 50 mg/kg feed resulting in 100% males. At 46 dph, only 50 mg/kg feed resulted in 100% males. Both MT-treated at 38 and 46 dph significantly differed (P < 0.01) from the expected normal population of male:female (1:1). MT-treated at 67 dph resulted in 37% and 25% intersex fish for both 20 and 50 mg/kg feed dosage groups, respectively. MT-treated at 38 and 46 dph promoted growth and showed significantly heavier mean body weight (P < 0.05) compared to control. The gonadosomatic index (GSI) of MT-treated at 38 and 46 dph was significantly lower than that in control. This study provides the first evidence that juvenile YP can be successfully masculinized when the treatment is initiated at the age of up to 46 dph. The result is important for sex control in aquaculture.
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Affiliation(s)
- Rafidah Othman
- Ohio Center for Aquaculture Research and Development, The Ohio State University South Centers, 1864 Shyville Road, OH, 45661, Piketon, USA
- Borneo Marine Research Institute, Universiti Malaysia Sabah, UMS, Kota Kinabalu, 88400, Sabah, Malaysia
| | - Xiao-Jun Ron
- Ohio Center for Aquaculture Research and Development, The Ohio State University South Centers, 1864 Shyville Road, OH, 45661, Piketon, USA
- Laboratory for Marine Fisheries and Aquaculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, People's Republic of China
| | - Hong Yao
- Ohio Center for Aquaculture Research and Development, The Ohio State University South Centers, 1864 Shyville Road, OH, 45661, Piketon, USA
| | - Paul O'Bryant
- Ohio Center for Aquaculture Research and Development, The Ohio State University South Centers, 1864 Shyville Road, OH, 45661, Piketon, USA
| | - Dean Rapp
- Ohio Center for Aquaculture Research and Development, The Ohio State University South Centers, 1864 Shyville Road, OH, 45661, Piketon, USA
| | - Jing-Chen Pei
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Hong-Juan Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
| | - Han-Ping Wang
- Ohio Center for Aquaculture Research and Development, The Ohio State University South Centers, 1864 Shyville Road, OH, 45661, Piketon, USA.
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Sutaswiriya N, Homklin S, Kreetachat T, Vaithanomsat P, Kreetachat N. Monitoring estrogen and androgen residues from livestock farms in Phayao Lake, Thailand. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:812. [PMID: 34786612 DOI: 10.1007/s10661-021-09607-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
The aim of the present study was to investigate steroid hormone residues from livestock farms and assess their risks to the surface water of Phayao Lake. These steroid hormones are endocrine-disrupting compounds (EDCs), which can be found in natural and synthetic forms. This research focused on examining the residues of seven steroid hormones (five estrogens and two androgens-estrone (E1), 17α-estradiol (αE2), 17β-estradiol (βE2), estriol (E3), 17α-ethinyl estradiol (EE2), testosterone (T), and 17α-methyltestosterone (MT)) from four types of livestock farms around Phayao Lake, Thailand. The samples collected from the livestock farms included feces, soil, and wastewater and were extracted by the solid phase extraction (SPE) technique and analyzed by liquid chromatography tandem mass spectrometry (LC-MS/MS). The risks from the residual steroid hormones were also characterized by estradiol equivalents (EEQs), testosterone equivalents (TEQs), and risk quotients (RQs). The results indicated that most hormone contamination from the farms' livestock was due to the estrogen hormones E1 (1.38-97.10 ng/g), βE2 (10.08-1366 ng/g), and EE2 (1.50-99.92 ng/g), which originate from the natural excretion and admixture of steroids in feedstock or medicines. Steroid hormones were not detected in the wastewater from cleaning processes on farms with wastewater treatment plants, whereas farms without wastewater treatment plants showed high values of estrogen hormone contamination, with EEQs of 128.8-472.9 ng/L and RQs of 208.3-294.3. However, the analysis of steroid hormone residues in Phayao Lake demonstrated that the residues did not severely affect aquatic organisms (with RQs of 0.002-144.5), and no estrogen or androgen residues were observed in the water treatment plant or tap water.
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Affiliation(s)
- Nawaphop Sutaswiriya
- Department of Environmental Engineering, School of Energy and Environment, University of Phayao, 56000, Phayao, Thailand
| | - Supreeda Homklin
- Department of Environmental Engineering, School of Energy and Environment, University of Phayao, 56000, Phayao, Thailand
| | - Torpong Kreetachat
- Department of Environmental Engineering, School of Energy and Environment, University of Phayao, 56000, Phayao, Thailand
| | - Pilanee Vaithanomsat
- Nanotechnology and Biotechnology Research Division, Kasetsart Agricultural and Agro-Industrial Product Improvement Institute (KAPI), Kasetsart University, Bangkok, 10900, Thailand
- Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University (CASTNAR, NRU-KU), Kasetsart University, Bangkok, 10900, Thailand
| | - Nathiya Kreetachat
- Department of Environmental Engineering, School of Energy and Environment, University of Phayao, 56000, Phayao, Thailand.
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Wang Q, Huang F, Duan X, Cheng H, Zhang C, Li L, Ruan X, He Q, Niu W, Yang H, Lu D, Zheng L, Zhao H. The ERβ-CXCL19/CXCR4-NFκB pathway is critical in mediating the E2-induced inflammation response in the orange-spotted grouper (Epinephelus coioides). J Steroid Biochem Mol Biol 2021; 212:105926. [PMID: 34091027 DOI: 10.1016/j.jsbmb.2021.105926] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 05/15/2021] [Accepted: 05/30/2021] [Indexed: 01/19/2023]
Abstract
The main physiological function of 17β-estradiol (E2) in vertebrates is to regulate sexual development and reproduction. In fish, especially hermaphroditic fish, estrogen is often used to aid reproduction, but it also can trigger an inflammatory response. However, the molecular mechanism for this E2-induced inflammatory reaction is not clear. In this study, we found that the ERβ-CXCL19/CXCR4-NFκB cascade regulated the E2-induced inflammatory response in the orange-spotted grouper (Epinephelus coioides). Strikingly, E2 treatment resulted in significantly high expression of inflammatory cytokines and induced phosphorylation and degradation of IκBα and translocation of NFκB subunit p65 to the nucleus in grouper spleen cells. However, the E2-induced inflammatory response could be prevented by the broad estrogen receptor (ER) ligand ICI 182,780. Moreover, the luciferase assay showed that E2 induced the inflammatory response by activating the promotor of chemokine CXCL19 through ERβ1 and ERβ2. Knockdown of CXCL19 blocked the E2-induced inflammatory response and NFκB nucleus translocation. Additionally, knockdown of chemokines CXCR4a and CXCR4b together, but not alone, blocked the E2-induced inflammatory response. The immunofluorescence assay and co-immunoprecipitation analysis showed that CXCL19 mediated the E2-induced inflammatory response by activating CXCR4a or CXCR4b. Taken together, these results showed that the ERβ-CXCL19/CXCR4-NFκB pathway mediated the E2-induced inflammatory response in grouper. These findings are valuable for future comparative immunological studies and provide a theoretical basis for mitigating the adverse reactions that occur when using E2 to help fish reproduce.
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Affiliation(s)
- Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, Guangzhou, 510642, China
| | - Fengqi Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Xuzhuo Duan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Huitao Cheng
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Chunli Zhang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Lihua Li
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Xinhe Ruan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Qi He
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Wenbiao Niu
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Huirong Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Danqi Lu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Leyun Zheng
- Fisheries Research Institute of Fujian, Xiamen, 361000, China
| | - Huihong Zhao
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, Guangzhou, 510642, China.
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Seyedi J, Kalbassi MR, Esmaeilbeigi M, Tayemeh MB, Amiri Moghadam J. Toxicity and deleterious impacts of selenium nanoparticles at supranutritional and imbalance levels on male goldfish (Carassius auratus) sperm. J Trace Elem Med Biol 2021; 66:126758. [PMID: 33857859 DOI: 10.1016/j.jtemb.2021.126758] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/02/2021] [Accepted: 04/05/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Selenium has a major role in male reproduction and antioxidative mechanisms. Although deficiency of this element can result in damages to the body's organs, this metalloid can induce deleterious effects in organisms by causing oxidative stress. This study assessed the spermatotoxicity of selenium nanoparticles (SeNPs) in goldfish (Carassius auratus) based on genotoxicity, antioxidant status, sperm quality, and histopathology. METHODS The fish with an average weight of 70 g (n = 288) were divided into four experimental groups (three replicates) and fed three times a day with SeNPs at different levels of 0, 0.1, 0.5, and 1 mg kg diet for 30 and 60 days. RESULTS After 30 and 60 days of feeding trial, compared to the control group, spermatocrit percentage markedly decreased at 1 mg kg SeNPs on day 30 as well as at 0.5 and 1 mg kg on day 60 (p < 0.05). Computer-assisted sperm analysis parameters especially VCL, VSL, and VAP decreased in response to SeNPs (p < 0.05). Percentage of fast speed progressive sperm cells was highest in fish fed with 0.1 mg kg SeNPs following the dietary experiment and significantly reduced in a SeNPs dose-dependent manner (p < 0.05). In addition, the levels of Malondialdehyde and Glutathione peroxidase were significantly elevated in seminal plasma of all SeNPs-treated groups (p < 0.05). On day 60, DNA damage of sperm was greatly increased at 1 mg kg SeNPs (p < 0.05). Moreover, the highest percentage of spermatocyte and spermatid were observed at the highest dose of SeNPs while the highest percentage of spermatozoa was recorded at the lowest and moderate SeNPs doses. CONCLUSION These findings suggested that non-optimal doses of SeNPs could reduce sperm quality, induce oxidative stress, and DNA damage in sperm, and disrupt testis development.
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Affiliation(s)
- Javad Seyedi
- Department of Aquaculture, Faculty of Marine Sciences, Tarbiat Modares University, Mazandaran, Noor, Iran
| | - Mohammad Reza Kalbassi
- Department of Aquaculture, Faculty of Marine Sciences, Tarbiat Modares University, Mazandaran, Noor, Iran.
| | - Milad Esmaeilbeigi
- Department of Aquaculture, Faculty of Marine Sciences, Tarbiat Modares University, Mazandaran, Noor, Iran
| | - Mohammad Behzadi Tayemeh
- Department of Aquaculture, Faculty of Marine Sciences, Tarbiat Modares University, Mazandaran, Noor, Iran
| | - Jamshid Amiri Moghadam
- Leibniz Institute for Natural Product Research and Infection Biology e.V. Hans-Knöll-Institute (HKI), Jena, Germany
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8
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Lin F, Wang L, Duan Y, Li K, Zhou J, Guang Z, Wang Y, Yang M, Qin Q, Wang Q. Expression and subcellular analyses of CCR8a/b genes with the identification of response to SGIV viral infect in orange-spotted grouper (Epinephelus coioides). FISH & SHELLFISH IMMUNOLOGY 2020; 106:628-639. [PMID: 32853761 DOI: 10.1016/j.fsi.2020.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 08/02/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
Chemokine receptors are a superfamily of seven transmembrane domain G-coupled receptors, and they play important roles in immune surveillance, inflammation, and development. Recently, nine CC chemokine receptors (CCRs) were identified and cloned from orange-spotted grouper (Epinephelus coioides) and annotated by phylogenetic and syntenic analyses. We detected mRNA transcripts for CCRs in healthy tissues of E. coioides, and CCR genes were highly expressed in the immune-relevant tissues. Analysis of gene expression after Singapore grouper iridovirus (SGIV) infection indicated that CCR genes are regulated in a gene-specific manner. CCR8a and CCR8b were significantly upregulated in the spleen and liver of resistant fish, indicating potential roles in immunity against the pathogen. Fluorescence microscopy revealed that CCR8a and CCR8b were expressed predominantly in the cytoplasm. Overexpression of CCR8a and CCR8b in grouper cells significantly inhibited the replication of SGIV, demonstrating that they delayed the occurrence of cytopathic effects induced by SGIV infection and inhibited viral gene transcription. CCR8a and CCR8b overexpression also significantly increased the expression of interferon (IFN)-related cytokines and activated IFN response element and IFN promoter activities. These results demonstrated that CCR8a and CCR8b might have an antiviral function against SGIV infect.
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Affiliation(s)
- Fangmei Lin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Li Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Yanchuang Duan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Keqi Li
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Jingxin Zhou
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Zhi Guang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Yuxin Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Min Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, People's Republic of China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, People's Republic of China.
| | - Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, People's Republic of China.
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Rodrigues-Filho JA, Garcia CEO, Chehade CG, Sanches EG, Borella MI, Nostro FLL, Araújo BC, Branco GS, Moreira RG. Gonadal remodeling and hormonal regulation during sex change of juvenile dusky grouper Epinephelus marginatus (Teleostei, Serranidae), an endangered protogynous hermaphrodite fish. FISH PHYSIOLOGY AND BIOCHEMISTRY 2020; 46:1809-1824. [PMID: 32557081 DOI: 10.1007/s10695-020-00830-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
Sex change was induced in Epinephelus marginatus juveniles using a nonsteroidal aromatase inhibitor (AI), a synthetic androgen (17α-methyltestosterone; MT), and a combination of both (MT + AI) in a 90-day experiment. A detailed remodeling of the gonads, the plasma level of gonadal steroids, and immunostaining of pituitary follicle-stimulating hormone (FSH), luteinizing hormone (LH), and somatolactin (SL) cells were analyzed. Sex inversion reached the final spermatogenesis stages using MT, while AI triggered spermatogenesis, but reaching only the spermatid stage. Estradiol (E2) levels did not change in fish treated with AI but decreased throughout the experimental period in animals treated with MT and MT + AI. Testosterone (T) levels increased in animals treated with MT during the first 60 days (and combined with AI in the first 30 days), decreasing in all experimental groups at 90 days, while AI-treated animals had increased plasma 11-ketotestosterone (11-KT) levels after 90 days. In control fish, FSH- and SL-producing cells (ir-FSH and ir-SL) were restricted to pars intermedia (PI) of the adenohypophysis. Pituitary ir-FSH cells were decreased at the end of the experimental period in all treatments compared with the CT animals. LH-producing cells (ir-LH) were present in proximal pars distalis (PPD) and pars intermedia (PI) of adenohypophysis and did not change after the experimental period. The decreased number of ir-FSH cells at the end of the experiment in all treatments could be related to the negative feedback loop triggered by the increase in natural and/or synthetic androgens.
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Affiliation(s)
- J A Rodrigues-Filho
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
- Fundação Instituto de Pesca do Estado do Rio de Janeiro (FIPERJ), Rio de Janeiro, Brazil
| | - C E O Garcia
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - C G Chehade
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - E G Sanches
- Instituto de Pesca-APTA/SAA, São Paulo, Brazil
| | - M I Borella
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - F L Lo Nostro
- Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Instituto de Biodiversidad y Biología Experimental Aplicada (IBBEA), Laboratorio de Ecotoxicología Acuática, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - B C Araújo
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - G S Branco
- Centro de Aquicultura da UNESP (CAUNESP), Jaboticabal, Brazil
| | - R G Moreira
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.
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Peter Dennis L, Nocillado J, Palma P, Amagai T, Soyano K, Elizur A. Development of a giant grouper Luteinizing Hormone (LH) Enzyme-Linked Immunosorbent Assay (ELISA) and its use towards understanding sexual development in grouper. Gen Comp Endocrinol 2020; 296:113542. [PMID: 32585213 DOI: 10.1016/j.ygcen.2020.113542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/06/2020] [Accepted: 06/16/2020] [Indexed: 10/23/2022]
Abstract
A recombinant giant grouper Luteinizing Hormone (LH) consisting of tethered beta and alpha subunits was produced in a yeast expression system. The giant grouper LH β-subunit was also produced and administered to rabbits for antibody development. The recombinant LH and its antibody were used to develop an Enzyme Linked Immunosorbent Assay (ELISA). This ELISA enabled detection of plasma LH levels in groupers at a sensitivity between 391 pg/ml and 200 ng/ml. Different species of grouper were assayed with this ELISA in conjunction with gonadal histology and body condition data to identify links between circulating LH levels and sexual development. We found that circulating levels of LH decreased when oocytes began to degenerate, and sex-transition gonadal characteristics were apparent when LH levels decreased further. When circulating LH levels were related to body condition (body weight/ body length), transitioning-stage fish had relatively high body condition but low plasma LH levels. This observation was similar across multiple grouper species and indicates that plasma LH levels combined with body condition may be a marker for early male identification in the protogynous hermaphrodite groupers.
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Affiliation(s)
- Lachlan Peter Dennis
- Genecology Research Centre, University of the Sunshine Coast, Locked Bag 4, Maroochydore DC 4558, Queensland, Australia
| | - Josephine Nocillado
- Genecology Research Centre, University of the Sunshine Coast, Locked Bag 4, Maroochydore DC 4558, Queensland, Australia
| | - Peter Palma
- Genecology Research Centre, University of the Sunshine Coast, Locked Bag 4, Maroochydore DC 4558, Queensland, Australia; Aquaculture Department, Southeast Asian Fisheries Development Center, Tigbauan 5021, Iloilo, Philippines
| | - Takafumi Amagai
- Institute for East China Sea Research, Nagasaki University, Bunkyomachi 852-8131, Nagasaki, Japan
| | - Kiyoshi Soyano
- Institute for East China Sea Research, Nagasaki University, Bunkyomachi 852-8131, Nagasaki, Japan
| | - Abigail Elizur
- Genecology Research Centre, University of the Sunshine Coast, Locked Bag 4, Maroochydore DC 4558, Queensland, Australia.
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11
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Lin F, Tong F, He Q, Xiao S, Liu X, Yang H, Guo Y, Wang Q, Zhao H. In vitro effects of androgen on testicular development by the AR-foxl3-rec8/fbxo47 axis in orange-spotted grouper (Epinephelus coioides). Gen Comp Endocrinol 2020; 292:113435. [PMID: 32057909 DOI: 10.1016/j.ygcen.2020.113435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/30/2020] [Accepted: 02/10/2020] [Indexed: 01/31/2023]
Abstract
In orange-spotted grouper, androgen can promote the development of testis and spermatogenesis, but the effect of androgen on testis development is unclear. Forkhead box L 3 (Foxl3) is important in the development of fish testis. Rec8 and fbxo47 are involved in meiosis, which impacts spermatogenesis. The present study investigated the plausible role of testis development through the Foxl3 transcriptional regulation of rec8 and fbxo47. The results of tissue distribution showed that rec8 and fbxo47 are highly expressed in gonad. In addition, the highest expression of foxl3, rec8, and fbxo47 was in the testis and intersex compared with the other stages of gonadal development, suggesting that foxl3, rec8, and fbxo47 are important in testis development. In addition, by using dual-luciferase assays, we found that the androgen can increase foxl3 promoter activity and Foxl3 can upregulate rec8 and fbxo47 promoter activity. Furthermore, the addition of β-testosterone significantly increased foxl3, rec8, and fbxo47 promoter activity. Together, these results suggest that foxl3 plays a decisive role in testis development by regulating the expression of rec8 or fbxo47 and imply that AR-foxl3-rec8/fbxo47 affects the testis development pathway.
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Affiliation(s)
- Fangmei Lin
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - Feng Tong
- South China Agricultural University Hospital, Guangzhou 510642, Guangdong, People's Republic of China
| | - Qi He
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - Shiqiang Xiao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - Xiaochun Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - Huirong Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - Yin Guo
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China
| | - Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China; Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China.
| | - Huihong Zhao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China.
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12
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Integration of ATAC-seq and RNA-seq Unravels Chromatin Accessibility during Sex Reversal in Orange-Spotted Grouper ( Epinephelus coioides). Int J Mol Sci 2020; 21:ijms21082800. [PMID: 32316525 PMCID: PMC7215633 DOI: 10.3390/ijms21082800] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/09/2020] [Accepted: 04/15/2020] [Indexed: 01/13/2023] Open
Abstract
Chromatin structure plays a pivotal role in maintaining the precise regulation of gene expression. Accessible chromatin regions act as the binding sites of transcription factors (TFs) and cis-elements. Therefore, information from these open regions will enhance our understanding of the relationship between TF binding, chromatin status and the regulation of gene expression. We employed an assay for transposase-accessible chromatin with high-throughput sequencing (ATAC-seq) and RNA-seq analyses in the gonads of protogynous hermaphroditic orange-spotted groupers during sex reversal to profile open chromatin regions and TF binding sites. We focused on several crucial TFs, including ZNF263, SPIB, and KLF9, and analyzed the networks of TF-target genes. We identified numerous transcripts exhibiting sex-preferred expression among their target genes, along with their associated open chromatin regions. We then investigated the expression patterns of sex-related genes as well as the mRNA localization of certain genes during sex reversal. We found a set of sex-related genes that—upon further study—might be identified as the sex-specific or cell-specific marker genes that trigger sex reversal. Moreover, we discovered the core genes (gnas, ccnb2, and cyp21a) of several pathways related to sex reversal that provide the guideposts for future study.
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13
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Peng C, Wang Q, Chen J, Yang H, Zhang W, Wang D, Li S, Tao M, Shi H, Lin H, Zhao H, Zhang Y. Retinoic acid and androgen influence germ cells development and meiotic initiation in juvenile orange-spotted grouper, Epinephelus coioides. Gen Comp Endocrinol 2020; 289:113379. [PMID: 31891688 DOI: 10.1016/j.ygcen.2019.113379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 12/01/2019] [Accepted: 12/27/2019] [Indexed: 10/25/2022]
Abstract
Meiosis is essential for germ cells development for all sexually reproducing species. Retinoic acid (RA) is the key factor controlling the sex-specific timing of meiotic initiation in mammals, birds and tetrapods. Here, we investigated the effects of RA on meiotic initiation and sex determination in protogynous hermaphrodite orange-spotted grouper (Epinephelus coioides). Expression profile investigations of meiotic marker genes during gonadal development indicated that germ cells undergone meiosis approximately at 180 days after hatching in the orange-spotted grouper. RA synthase inhibitor treatments on juvenile orange-spotted groupers resulted in impeded germ cells development and delayed meiotic initiation with simultaneous down-regulation of vasa, dazl, sycp3 and rec8, which was rescued by exogenous RA administration. Additionally, exogenous androgen treated fish showed a delayed meiotic initiation consistent with decreased sycp3 and rec8 expression and were directed to a spermiogenesis fate. Our results imply that meiotic initiation in the orange-spotted grouper is strongly influenced by RA and androgen, and the regulation of meiotic initiation may involve in the spermatogenesis induced by exogenous androgen.
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Affiliation(s)
- Cheng Peng
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou 510260, China; State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Qing Wang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China; College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Jiaxing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Huirong Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Wenrui Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Dengdong Wang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Min Tao
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, China
| | - Herong Shi
- Marine Fisheries Development Center of Guangdong Province, Huizhou 516081, China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Huihong Zhao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China; Marine Fisheries Development Center of Guangdong Province, Huizhou 516081, China; Southern Marine Science and Engineering Guangdong Laboratory (ZhanJiang), Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
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14
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Yu Q, Peng C, Ye Z, Tang Z, Li S, Xiao L, Liu S, Yang Y, Zhao M, Zhang Y, Lin H. An estradiol-17β/miRNA-26a/cyp19a1a regulatory feedback loop in the protogynous hermaphroditic fish, Epinephelus coioides. Mol Cell Endocrinol 2020; 504:110689. [PMID: 31891771 DOI: 10.1016/j.mce.2019.110689] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/17/2019] [Accepted: 12/17/2019] [Indexed: 12/27/2022]
Abstract
Cyp19a1a is a key gene responsible for the production of estradiol-17β (E2), the main functional estrogen and a major downstream regulator of reproduction in teleost fish. It is widely known that CYP19 gene expression, aromatase activity, and E2 production can influence gonadal differentiation and sex reversal in teleost fish, but the feedback mechanisms whereby E2 regulates cyp19a1a remain poorly understood, especially regarding the potential roles of endogenous small RNA molecules (miRNAs). Here, we identified miR-26a-5p as a regulatory factor of its predicted target gene (cyp19a1a). In vitro and in vivo studies showed that miR-26a-5p can decrease cyp19a1a expression. Furthermore, high doses of E2 act as a repressor of miR-26a-5p. This study proposes a regulatory feedback loop whereby E2 regulates cyp19a1a through miR-26a-5p, and suggests that this positive feedback is an important aspect of the control of E2 production.
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Affiliation(s)
- Qi Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266373, China; Southern Marine Science and Engineering Guangdong Laboratory (ZhanJiang), Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Cheng Peng
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou, 510260, China
| | - Zhifeng Ye
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
| | - Zhujing Tang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; Southern Marine Science and Engineering Guangdong Laboratory (ZhanJiang), Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; Southern Marine Science and Engineering Guangdong Laboratory (ZhanJiang), Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Su Liu
- Marine Fisheries Development Center of Guangdong Province, Huizhou, 516081, China
| | - Yuqing Yang
- Marine Fisheries Development Center of Guangdong Province, Huizhou, 516081, China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China.
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266373, China; Southern Marine Science and Engineering Guangdong Laboratory (ZhanJiang), Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China; Marine Fisheries Development Center of Guangdong Province, Huizhou, 516081, China.
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
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15
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Wu X, Yang Y, Zhong C, Guo Y, Li S, Lin H, Liu X. Transcriptome profiling of laser-captured germ cells and functional characterization of zbtb40 during 17alpha-methyltestosterone-induced spermatogenesis in orange-spotted grouper (Epinephelus coioides). BMC Genomics 2020; 21:73. [PMID: 31973692 PMCID: PMC6979330 DOI: 10.1186/s12864-020-6477-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 01/10/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Spermatogenesis is an intricate process regulated by a finely organized network. The orange-spotted grouper (Epinephelus coioides) is a protogynous hermaphroditic fish, but the regulatory mechanism of its spermatogenesis is not well-understood. In the present study, transcriptome sequencing of the male germ cells isolated from orange-spotted grouper was performed to explore the molecular mechanism underlying spermatogenesis. RESULTS In this study, the orange-spotted grouper was induced to change sex from female to male by 17alpha-methyltestosterone (MT) implantation. During the spermatogenesis, male germ cells (spermatogonia, spermatocytes, spermatids, and spermatozoa) were isolated by laser capture microdissection. Transcriptomic analysis for the isolated cells was performed. A total of 244,984,338 clean reads were generated from four cDNA libraries. Real-time PCR results of 13 genes related to sex differentiation and hormone metabolism indicated that transcriptome data are reliable. RNA-seq data showed that the female-related genes and genes involved in hormone metabolism were highly expressed in spermatogonia and spermatozoa, suggesting that these genes participate in the spermatogenesis. Interestingly, the expression of zbtb family genes showed significantly changes in the RNA-seq data, and their expression patterns were further examined during spermatogenesis. The analysis of cellular localization of Eczbtb40 and the co-localization of Eczbtb40 and Eccyp17a1 in different gonadal stages suggested that Eczbtb40 might interact with Eccyp17a1 during spermatogenesis. CONCLUSIONS Our study, for the first time, investigated the transcriptome of the male germ cells from orange-spotted grouper, and identified functional genes, GO terms, and KEGG pathways involved in spermatogenesis. Furthermore, Eczbtb40 was first characterized and its role during spermatogenesis was predicted. These data will contribute to future studies on the molecular mechanism of spermatogenesis in teleosts.
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Affiliation(s)
- Xi Wu
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 China
| | - Yang Yang
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 China
| | - Chaoyue Zhong
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 China
| | - Yin Guo
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 China
| | - Xiaochun Liu
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory for Improved Variety Reproduction of Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 China
- Southern Laboratory of Ocean Science and Engineering, Zhuhai, 519000 People’s Republic of China
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16
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Identification and characterization of germ cell genes vasa and dazl in a protogynous hermaphrodite fish, orange-spotted grouper (Epinephelus coioides). Gene Expr Patterns 2020; 35:119095. [DOI: 10.1016/j.gep.2020.119095] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/18/2020] [Accepted: 01/25/2020] [Indexed: 12/21/2022]
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17
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Chen J, Peng C, Yu Z, Xiao L, Yu Q, Li S, Zhang H, Lin H, Zhang Y. The Administration of Cortisol Induces Female-to-Male Sex Change in the Protogynous Orange-Spotted Grouper, Epinephelus coioides. Front Endocrinol (Lausanne) 2020; 11:12. [PMID: 32082256 PMCID: PMC7005586 DOI: 10.3389/fendo.2020.00012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/08/2020] [Indexed: 11/13/2022] Open
Abstract
In this study, we injected cortisol into the protogynous orange-spotted grouper (Epinephelus coioides) to investigate the role of this hormone in sex change. Following injection, we evaluated gonadal changes, serum levels of steroid hormones, and sex-related gene expression during the processes of cortisol-induced sex change and cortisol withdrawal in the orange-spotted grouper. Cortisol treatment caused the degeneration of oocytes and induced sex change in a dose-dependent manner. Over the long-term, we observed a significant increase in serum 11-ketotestosterone (11-KT) levels in all cortisol-treated groups, although levels of 17β-estradiol did not change significantly. Consistent with the elevation of serum 11-KT levels, the expression of genes related to testicular development was also significantly up-regulated in the cortisol-treated groups. Based on our results, we propose that cortisol may trigger masculinization by inducing the synthesis of 11-KT and by directly activating the expression of sex-related genes. Furthermore, we found that cortisol-induced sex change was not permanent and could be reversed after the withdrawal of cortisol treatment.
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Affiliation(s)
- Jiaxing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Cheng Peng
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou, China
| | - Zeshu Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qi Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Fisheries College, Guangdong Ocean University, Zhanjiang, China
- *Correspondence: Shuisheng Li
| | - Haifa Zhang
- Marine Fisheries Development Center of Guangdong Province, Huizhou, China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Marine Fisheries Development Center of Guangdong Province, Huizhou, China
- Yong Zhang
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18
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Wang Q, Lin F, He Q, Liu X, Xiao S, Zheng L, Yang H, Zhao H. Assessment of the Effects of Bisphenol A on Dopamine Synthesis and Blood Vessels in the Goldfish Brain. Int J Mol Sci 2019; 20:ijms20246206. [PMID: 31835337 PMCID: PMC6941070 DOI: 10.3390/ijms20246206] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/02/2019] [Accepted: 12/04/2019] [Indexed: 02/04/2023] Open
Abstract
Bisphenol A (BPA) is an abundant contaminant found in aquatic environments. While a large number of toxicological studies have investigated the effects of BPA, the potential effects of BPA exposure on fish brain have rarely been studied. To understand how BPA impacts goldfish brains, we performed a transcriptome analysis of goldfish brains that had been exposed to 50 μg L−1 and 0 μg L−1 BPA for 30 days. In the analysis of unigene expression profiles, 327 unigenes were found to be upregulated and 153 unigenes were found to be downregulated in the BPA exposure group compared to the control group. Dopaminergic signaling pathway-related genes were significantly downregulated in the BPA exposure group. Furthermore, we found that serum dopamine concentrations decreased and TUNEL (terminal deoxynucleotidyl transferase 2-deoxyuridine, 5-triphosphate nick end labeling) staining was present in dopamine neurons enriched regions in the brain after BPA exposure, suggesting that BPA may disrupt dopaminergic processes. A KEGG analysis revealed that genes involved in the fluid shear stress and atherosclerosis pathway were highly significantly enriched. In addition, the qRT-PCR results for fluid shear stress and atherosclerosis pathway-related genes and the vascular histology of the brain showed that BPA exposure could damage blood vessels and induce brain atherosclerosis. The results of this work provide insights into the biological effects of BPA on dopamine synthesis and blood vessels in goldfish brain and could lay a foundation for future BPA neurotoxicity studies.
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Affiliation(s)
- Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; (Q.W.); (F.L.); (Q.H.); (X.L.); (S.X.)
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Fangmei Lin
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; (Q.W.); (F.L.); (Q.H.); (X.L.); (S.X.)
| | - Qi He
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; (Q.W.); (F.L.); (Q.H.); (X.L.); (S.X.)
| | - Xiaochun Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; (Q.W.); (F.L.); (Q.H.); (X.L.); (S.X.)
| | - Shiqiang Xiao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; (Q.W.); (F.L.); (Q.H.); (X.L.); (S.X.)
| | - Leyun Zheng
- Fisheries Research Institute of Fujian, Xiamen 361000, China;
| | - Huirong Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; (Q.W.); (F.L.); (Q.H.); (X.L.); (S.X.)
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (H.Y.); (H.Z.)
| | - Huihong Zhao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; (Q.W.); (F.L.); (Q.H.); (X.L.); (S.X.)
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (H.Y.); (H.Z.)
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19
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Han Y, Peng C, Wang L, Guo J, Lu M, Chen J, Liu Y, Li S, Zhao M, Zhang Y, Lin H. Female-to-male sex reversal in orange-spotted grouper (Epinephelus coioides) caused by overexpressing of Amh in vivo. Biol Reprod 2019; 99:1205-1215. [PMID: 30010724 DOI: 10.1093/biolre/ioy157] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 07/11/2018] [Indexed: 12/28/2022] Open
Abstract
A variety of mechanisms are involved in sex determination in vertebrates. The orange-spotted grouper (Epinephelus coioides), a teleost fish, functions first as females and later as a male and is an ideal model to investigate the regulation of sexual fate. Here, we report female-to-male sex reversal in juvenile orange-spotted groupers caused by overexpressing anti-Müllerian hormone (Amh). Tissue distribution analyses showed that amh and amhrII primarily expressed in the gonad, and expression level in the testis was much higher than that in the ovary. In gonads, the expression of amh was located in the Sertoli cells around spermatogonia of the testis and in the zona pellucida of the mature ovary, and the expression of amhrII was located in the Sertoli cells of the testis and in the oocytes of the ovary. Decrease in female-related genes and serum 17β-estradiol level, increase in male-related genes and serum 11-ketotestosterone, ovarian regression, and spermatogonia proliferation were observed during plasmid feeding experiment. These results illustrate that amh overexpression plasmid feeding can induce a female-to-male transition in grouper.
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Affiliation(s)
- Yulong Han
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Cheng Peng
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Le Wang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Jiani Guo
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Mingwei Lu
- Department of Aquaculture, National Taiwan Ocean University, Keelung City, Taiwan
| | - Jiaxin Chen
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Yun Liu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China.,Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China.,Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China.,Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China.,College of Ocean, Hainan University, Haikou, People's Republic of China
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20
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Tang L, Chen J, Ye Z, Zhao M, Meng Z, Lin H, Li S, Zhang Y. Transcriptomic Analysis Revealed the Regulatory Mechanisms of Oocyte Maturation and Hydration in Orange-Spotted Grouper (Epinephelus coioides). MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2019; 21:537-549. [PMID: 31129797 DOI: 10.1007/s10126-019-09902-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/26/2019] [Indexed: 06/09/2023]
Abstract
Oocyte maturation and hydration are regulated by a complex interplay of various hormones and local factors. We have investigated the morphological changes of follicles and serum steroid levels during the HCG (human choionic gonadotophin)-induced oocyte maturation in the orange-spotted grouper. For the first time, a large-scale transcriptomic analysis of follicles during the maturation has been conducted in a fish species which produce pelagic oocytes. Eight cDNA libraries of follicle samples, from full-grown immature follicles to mature follicles, were constructed. A total of 402,530,284 high-quality clean reads were obtained after filtering, 79.66% of which perfectly mapped to the orange-spotted grouper genome. Real-time PCR results of 12 representative genes related to oocyte maturation and hydration verified the reliability of the RNA-seq data. A large number of genes related to oocyte maturation and hydration were identified in the transcriptome dataset. And the transcriptomic analysis revealed the dynamic changes of the steroid synthesis pathway and the pathway of hydration during oocyte maturation. The present study will facilitate future study on the oocyte maturation and hydration in the orange-spotted grouper and other marine pelagic egg spawner.
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Affiliation(s)
- Lin Tang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jiaxing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zhifeng Ye
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zining Meng
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.
- Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University, Zhanjiang, 524088, China.
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, China.
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21
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Li M, Sun L, Wang D. Roles of estrogens in fish sexual plasticity and sex differentiation. Gen Comp Endocrinol 2019; 277:9-16. [PMID: 30500373 DOI: 10.1016/j.ygcen.2018.11.015] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/23/2018] [Accepted: 11/26/2018] [Indexed: 01/20/2023]
Abstract
Fish sex could be reversed at the undifferentiated stage of gonad by administration of exogenous estrogen (E2) or blockade of endogenous estrogen synthesis with aromatase inhibitors, which is designated as primary sex reversal (PSR). Recent studies have well demonstrated that gonochoristic fish maintain their sexual plasticity after sex determination/differentiation. The differentiated ovary could be transdifferentiated into functional testis, and vice versa, the differentiated testis could be transdifferentiated into ovary. By analyzing these two secondary sex reversal (SSR) models, it was found that induction of male-to-female sex reversal initiates from dorsal (near the blood vessel) to the ventral, while induction of female-to-male sex reversal initiates from the ventral to dorsal. Down regulation of endogenous estrogen is the prerequisite for the ovarian transdifferentiation. However, exogenous estrogen alone is not sufficient for inducing differentiated testis to ovary. Administration of E2 and simultaneous blockage of androgen synthesis could induce testicular transdifferentiation. Therefore, endogenous estrogen is critical for the ovarian differentiation/maintenance and androgen is critical for testicular maintenance. Recently, genetic studies with genome editing technologies also showed that disruption of Cyp19a1a induced testicular development, indicating that cyp19a1a is the key gene essential for estrogen synthesis and ovary differentiation/maintenance. Knockout of male pathway genes or overexpression of female pathway genes could up-regulate cyp19a1a expression and increase estrogen level so as to promote ovary. Conversely, knockout of female pathway genes or overexpression of male pathway genes could down-regulate cyp19a1a expression and decrease estrogen level so as to promote testis (transgenic or knockout sex reversal, TSR). Epigenetic regulation of cyp19a1a play a critical role in natural sex reversal (NSR), but its relation with PSR, SSR and TSR needs further detailed investigations. In all, these studies further highlighted the important roles of endogenous estrogens in fish sex differentiation/maintenance.
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Affiliation(s)
- Minghui Li
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, 400715 Chongqing, PR China
| | - Lina Sun
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, 400715 Chongqing, PR China
| | - Deshou Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, 400715 Chongqing, PR China.
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22
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Wang Q, Yang M, Li C, Wang S, Wang Y, Lin F, Zheng L, Yu Y, Qin Q. Functional analysis of the CXCR1a gene response to SGIV viral infection in grouper. FISH & SHELLFISH IMMUNOLOGY 2019; 88:217-224. [PMID: 30807858 DOI: 10.1016/j.fsi.2019.02.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 02/21/2019] [Accepted: 02/22/2019] [Indexed: 06/09/2023]
Abstract
Chemokine receptors are a superfamily of seven-transmembrane domain G-coupled receptors and have important roles in immune surveillance, inflammation, and development. In previous studies, a series of CXCRs in grouper (Epinephelus coioides) was identified; however, the function of CXCR in viral infection has not been studied. To better understand the effect of the CXCR family on the fish immune response, full-length CXCR1a was cloned, and its immune response to Singapore grouper iridovirus (SGIV) was investigated. Grouper CXCR1a shared a seven-transmembrane (7-TM) region and a G protein-coupled receptor (GPCR) family 1 that contained a triaa stretch (DRY motif). Phylogenetic analysis indicated that CXCR1a showed the nearest relationship to Takifugu rubripes, followed by other fish, bird and mammal species. Fluorescence microscopy revealed that CXCR1a was expressed predominantly in the cytoplasm. Overexpression of CXCR1a in grouper cells significantly inhibited the replication of SGIV, demonstrating that CXCR1a delayed the occurrence of cytopathic effects (CPE) induced by SGIV infection and inhibited viral gene transcription. Furthermore, our results also showed that CXCR1a overexpression significantly increased the expression of interferon-related cytokines and activated ISRE and IFN promoter activities. Taken together, the results demonstrated that CXCR1a might have an antiviral function against SGIV infection.
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Affiliation(s)
- Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Min Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Chen Li
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Shaowen Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Yuxin Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Fangmei Lin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Leyun Zheng
- Fisheries Research Institute of Fujian, Xiamen, 361000, People's Republic of China
| | - Yepin Yu
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
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23
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Wang Q, Yang H, Yang M, Yu Y, Yan M, Zhou L, Liu X, Xiao S, Yang Y, Wang Y, Zheng L, Zhao H, Li Y. Toxic effects of bisphenol A on goldfish gonad development and the possible pathway of BPA disturbance in female and male fish reproduction. CHEMOSPHERE 2019; 221:235-245. [PMID: 30640006 DOI: 10.1016/j.chemosphere.2019.01.033] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/27/2018] [Accepted: 01/05/2019] [Indexed: 06/09/2023]
Abstract
Bisphenol A (BPA) is an abundant endocrine-disrupting compound that is found in the aquatic environment and has adverse effects on fish reproduction; however, the exact pathway of these impacts is unclear. In this study, the different effects of BPA on ovarian and testis development in goldfish (Carassius auratus) and the different mechanisms underlying these effects were investigated. The gonadosomatic index (GSI) and gonadal histology demonstrated that BPA diminished ovarian maturation in goldfish, which recovered after BPA treatment withdrawal. In males, BPA disrupted testis maturation, but this disruption could not be recovered after BPA treatment withdrawal. The hypothalamic-pituitary-gonad (HPG) axis-related genes sgnrh, fshβ and lhβ were significantly decreased in BPA-treated female fish, while no changes in sex steroid hormone levels and no TUNEL and PCNA staining were found in the ovary, suggesting that BPA may reduce ovarian maturation through the HPG axis. In male fish, TUNEL staining was found in 1 μg L-1 BPA-exposed germ cells and 50 and 500 μg L-1 BPA-exposed Leydig cells. Decreases in 11-KT levels were also found in 50 and 500 μg L-1 BPA-exposed fish, but BPA did not affect genes associated with the HPG axes. This result shows that BPA disrupts testis maturation through apoptosis of germ cells and Leydig cells, thus inducing decreases in 11-KT levels that disrupt spermatogenesis. Collectively, our findings provide insights into the molecular and cellular mechanisms underlying BPA disturbance of goldfish reproduction.
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Affiliation(s)
- Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Huirong Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Min Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Yepin Yu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Muting Yan
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Lei Zhou
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Xiaochun Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Shiqiang Xiao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Yan Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Yuxin Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Leyun Zheng
- Research Institute of Fujian, Xiamen 361000, People's Republic of China
| | - HuiHong Zhao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China.
| | - Yuanyou Li
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, People's Republic of China.
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24
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Lyu Q, Hu J, Yang X, Liu X, Chen Y, Xiao L, Liu Y, Wang Q, Chen J, Huang M, Yu Z, Yang H, Shi H, Zhang Y, Zhao H. Expression profiles of dmrts and foxls during gonadal development and sex reversal induced by 17α-methyltestosterone in the orange-spotted grouper. Gen Comp Endocrinol 2019; 274:26-36. [PMID: 30594589 DOI: 10.1016/j.ygcen.2018.12.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 12/24/2018] [Accepted: 12/26/2018] [Indexed: 12/19/2022]
Abstract
The orange-spotted grouper, Epinephelus coioides, is a marine protogynous hermaphrodite fish of commercial importance. There are many examples of sex change species among marine fish, but the molecular basis for the sex change is still unknown. Gonadal expression patterns of the dmrts and foxls genes in E. coioides have pointed to sexual dimorphism in this species and it has been shown that mRNA levels of dmrts and foxls to vary significantly during reproduction cycles. The steroid 17α-methyltestosterone was used to induce sex reversal in these fish, during which dmrts and foxls levels changed significantly and subsequently reverted to normal when 17α-methyltestosterone was withdrawn. Interestingly, the expression of dmrt2b and dmrt3 was not affected by this steroid. We speculate that the role of foxl2 in reproduction may be conserved via regulation of early differentiation of the ovary by the hypothalamus-pituitary-gonad axis, and dmrt2 may have a significant role in premature ovarian differentiation and maintenance in E. coioides. dmrt1 and foxl3 played a role in the development of the testes and are believed to be potential male regulatory genes.
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Affiliation(s)
- Qingji Lyu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - Juan Hu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - XianKuan Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - XiaoChun Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - YiBin Chen
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China
| | - YaLi Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China
| | - Qing Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China; State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China
| | - JiaXing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China
| | - MinWei Huang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China
| | - ZeShu Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China
| | - HuiRong Yang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China
| | - HeRong Shi
- Guangdong Marine Fishery Experiment Center, Huizhou 516081, Guangdong, People's Republic of China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, People's Republic of China.
| | - HuiHong Zhao
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China.
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25
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Chen J, Xiao L, Peng C, Ye Z, Wang D, Yang Y, Zhang H, Zhao M, Li S, Lin H, Zhang Y. Socially controlled male-to-female sex reversal in the protogynous orange-spotted grouper, Epinephelus coioides. JOURNAL OF FISH BIOLOGY 2019; 94:414-421. [PMID: 30684293 DOI: 10.1111/jfb.13911] [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: 08/24/2018] [Accepted: 01/24/2019] [Indexed: 06/09/2023]
Abstract
Socially controlled sex change in teleosts is a dramatic example of adaptive reproductive plasticity. In many cases, the occurrence of sex change is triggered by a change in the social context, such as the disappearance of the dominant individual. The orange-spotted grouper Epinephelus coioides is a typical protogynous hermaphrodite fish that changes sex from female to male and remains male throughout its life span. In this study, male-to-female sex reversal in male Epinephelus coioides was successfully induced by social isolation. The body length and mass, gonadal change, serum sex steroid hormone levels and sex-related gene expression patterns during the process of socially controlled male-to-female sex reversal in E. coioides were systematically examined. This report investigates the physiological mechanisms of the socially controlled male-to-female sex reversal process in a protogynous hermaphrodite grouper species. The results enable us to study the physiological control of sex change, not only from female to male, but also from male to female.
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Affiliation(s)
- Jiaxing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Cheng Peng
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Zhifeng Ye
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Dengdong Wang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Yuqing Yang
- Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China
| | - Haifa Zhang
- Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
- College of Ocean, Hainan University, Haikou, People's Republic of China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China
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26
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Huang M, Chen J, Liu Y, Chen H, Yu Z, Ye Z, Peng C, Xiao L, Zhao M, Li S, Lin H, Zhang Y. New Insights Into the Role of Follicle-Stimulating Hormone in Sex Differentiation of the Protogynous Orange-Spotted Grouper, Epinephelus coioides. Front Endocrinol (Lausanne) 2019; 10:304. [PMID: 31156554 PMCID: PMC6529513 DOI: 10.3389/fendo.2019.00304] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 04/29/2019] [Indexed: 11/13/2022] Open
Abstract
Follicle-stimulating hormone (FSH) signaling is considered to be essential for early gametogenesis in teleosts, but its functional roles during sex differentiation are largely unknown. In this study, we investigated the effects of long-term and short-term FSH injection on sex differentiation in the protogynous orange-spotted grouper (Epinephelus coioides). Long-term FSH treatment initially promoted the formation of ovaries but subsequently induced a male fate. The expression of female pathway genes was initially increased but then decreased, whereas the expression of male pathway genes was up-regulated only during long-term FSH treatment. The genes related to the synthesis of sex steroid hormones, as well as serum 11-ketotestosterone and estradiol, were also up-regulated during long-term FSH treatment. Short-term FSH treatment activated genes in the female pathway (especially cyp19a1a) at low doses but caused inhibition at high doses. Genes in the male pathway were up-regulated by high concentrations of FSH over the short term. Finally, we found that low, but not high, concentrations of FSH treatment activated cyp19a1a promoter activities in human embryonic kidney (HEK) 293 cells. Overall, our data suggested that FSH may induce ovarian differentiation or a change to a male sex fate in the protogynous orange-spotted grouper, and that these processes occurred in an FSH concentration-dependent manner.
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Affiliation(s)
- Minwei Huang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University, Zhanjiang, China
| | - Jiaxing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Yun Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Huimin Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Zeshu Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Zhifeng Ye
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Cheng Peng
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou, China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University, Zhanjiang, China
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai, China
- *Correspondence: Shuisheng Li
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University, Zhanjiang, China
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai, China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University, Zhanjiang, China
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai, China
- Yong Zhang
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27
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Han Y, Zhao M, Wang L, Yu Z, Wang J, Yu Q, Xiao L, Lu M, Li S, Zhang Y, Lin H. Overexpression of Anti-müllerian Hormone Gene in vivo Affects Gonad Sex Differentiation in Undifferentiated Orange-Spotted Groupers ( Epinephelus coioides). Front Endocrinol (Lausanne) 2019; 10:210. [PMID: 31024449 PMCID: PMC6459890 DOI: 10.3389/fendo.2019.00210] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 03/15/2019] [Indexed: 12/17/2022] Open
Abstract
Sex differentiation in teleost fishes occurs in response to sex determination signals, which induce the gonad to develop as either an ovary or testis. However, sex differentiation mechanisms in fishes are diverse, and information on gonad differentiation in sex changing fishes remains limited. The orange-spotted grouper (Epinephelus coioides) is a protogynous hermaphroditic fish that provides an ideal model for investigating gonad differentiation in vertebrates. In this study, Transcriptome data showed that expression levels of amh and amhrII in gonads were increased during sex differentiation. Then we investigated the effect of overexpression anti-Müllerian hormone (Amh) on gonad development in juvenile orange-spotted groupers. Expression levels of female-related genes and serum 17β-estradiol levels were decreased, while expression of male-related genes and serum 11-ketotestosterone levels were increased in fish fed with amh-plasmid. Overexpression of Amh was also promoted the spermatogonia proliferation and induced the development of male gonads in undifferentiated orange-spotted groupers, but that this male tendency was preceded by female differentiation. In summary, these results illustrated that Amh overexpression by amh-plasmid feeding induced male gonad development in undifferentiated groupers.
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Affiliation(s)
- Yulong Han
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- *Correspondence: Mi Zhao
| | - Le Wang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Zeshu Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Jing Wang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Qi Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Mingwei Lu
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Yong Zhang
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- College of Ocean, Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University, Haikou, China
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28
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Huang M, Wang Q, Chen J, Chen H, Xiao L, Zhao M, Zhang H, Li S, Liu Y, Zhang Y, Lin H. The co-administration of estradiol/17α-methyltestosterone leads to male fate in the protogynous orange-spotted grouper, Epinephelus coioides. Biol Reprod 2018; 100:745-756. [DOI: 10.1093/biolre/ioy211] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/18/2018] [Accepted: 11/06/2018] [Indexed: 11/14/2022] Open
Affiliation(s)
- Minwei Huang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
| | - Qing Wang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- College of Marine Sciences, South China Agricultural University, Guangzhou, People's Republic of China
| | - Jiaxing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
| | - Huimin Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
| | - Haifa Zhang
- Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
| | - Yun Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
- Marine Fisheries Development Center of Guangdong Province, Huizhou, People's Republic of China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Key Laboratory for Tropical Marine Fishery Resource Protection and Utilization of Hainan Province, Hainan Tropical Ocean University, Sanya 570228, China
- College of Ocean, Hainan University, Haikou, People's Republic of China
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29
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MT-Feeding-Induced Impermanent Sex Reversal in the Orange-Spotted Grouper during Sex Differentiation. Int J Mol Sci 2018; 19:ijms19092828. [PMID: 30235790 PMCID: PMC6163612 DOI: 10.3390/ijms19092828] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/22/2018] [Accepted: 09/11/2018] [Indexed: 11/24/2022] Open
Abstract
In this study, we systematically investigated the process of sex reversal induced by 17-methyltestosterone (MT) feeding and MT-feeding withdrawal at the ovary differentiation stage in orange-spotted groupers, Epinephelus coioides. Gonadal histology showed that MT feeding induced a precocious sex reversal from immature ovaries to testes, bypassing the formation of an ovarian cavity, and MT-feeding withdrawal led to an ovarian fate. In both the MT feeding and MT-feeding withdrawal phases, cytochrome P450 family 11 subfamily B (cyp11b) gene expression and serum 11-KT levels were not significantly changed, suggesting that the MT-treated fish did not generate endogenous steroids, even though active spermatogenesis occurred. Finally, by tracing doublesex-expressing and Mab-3-related transcription factor 1 (dmrt1)-expressing cells and TUNEL (terminal deoxynucleotidyl transferase 2-deoxyuridine, 5-triphosphate nick end labeling) assays, we found that the efferent duct formed first, and then, the germ cells and somatic cells of the testicular tissue were generated around the efferent duct during MT-feeding-induced precocious sex reversal. Collectively, our findings provide insights into the molecular and cellular mechanisms underlying sex reversal induced by exogenous hormones during sex differentiation in the protogynous orange-spotted grouper.
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