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Zhang Y, Guan T, Wang L, Ma X, Zhu C, Wang H, Li J. Metamifop as an estrogen-like chemical affects the pituitary-hypothalamic-gonadal (HPG) axis of female rice field eels ( Monopterus albus). Front Physiol 2023; 14:1088880. [PMID: 36744025 PMCID: PMC9892845 DOI: 10.3389/fphys.2023.1088880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/09/2023] [Indexed: 01/21/2023] Open
Abstract
Metamifop (MET) is a widely used herbicide. It is likely for it to enter water environment when utilized, thus potential impacts may be produced on aquatic animals. Little information is available about its effects on the endocrine system of fish to date. In the current study, female rice field eels (Monopterus albus) were exposed to different MET concentrations (0, 0.2, 0.4, 0.6, 0.8 mg L -1) for 96 h to examine the effect of MET on the hypothalamic-pituitary-gonadal (HPG) axis and sexual reversal. The results showed that high concentrations of MET exposure increased vitellogenin (VTG) levels in liver and plasma, but plasma sex hormone levels were not affected by MET exposure. MET exposure increased the expression of CYP19A1b and CYP17 that regulate sex hormone production in the brain, but the expression of genes (CYP19A1a, CYP17, FSHR, LHCGR, hsd11b2, 3β-HSD) associated with sex hormone secretion in the ovary and the estrogen receptor genes (esr1, esr2a, esr2b) in the liver were all suppressed. In addition, the expression of sex-related gene (Dmrt1) was suppressed. This study revealed for the first time that MET has estrogen-like effects and has a strong interference with the expression of HPG axis genes. MET did not show the ability to promote the sexual reversal in M. albus, on the contrary, the genes expression showed that the occurrence of male pathway was inhibited.
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Affiliation(s)
- Yi Zhang
- School of Life Science, Huaiyin Normal University, Huai’an, China,Key Laboratory of Freshwater Aquatic Genetic Resources Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Tianyu Guan
- School of Life Science, Huaiyin Normal University, Huai’an, China,Key Laboratory of Freshwater Aquatic Genetic Resources Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Long Wang
- School of Life Science, Huaiyin Normal University, Huai’an, China,Key Laboratory of Freshwater Aquatic Genetic Resources Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Xintong Ma
- School of Life Science, Huaiyin Normal University, Huai’an, China
| | - Chuankun Zhu
- School of Life Science, Huaiyin Normal University, Huai’an, China
| | - Hui Wang
- School of Life Science, Huaiyin Normal University, Huai’an, China,*Correspondence: Hui Wang,
| | - Jiale Li
- Key Laboratory of Freshwater Aquatic Genetic Resources Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
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2
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Tian HF, Hu Q, Lu HY, Li Z. Chromosome-Scale, Haplotype-Resolved Genome Assembly of Non-Sex-Reversal Females of Swamp Eel Using High-Fidelity Long Reads and Hi-C Data. Front Genet 2022; 13:903185. [PMID: 35669182 PMCID: PMC9165713 DOI: 10.3389/fgene.2022.903185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
The Asian swamp eel (Monopterus albus) is an excellent model species for studying sex change and chromosome evolution. M. albus is also widely reared in East Asia and South-East Asia because of its great nutritional value. The low fecundity of this species (about 300 eggs per fish) greatly hinders fries production and breeding programs. Interestingly, about 3–5% of the eels could remain as females for 3 years and lay more than 3,000 eggs per fish, which are referred to as non-sex-reversal (NSR) females. Here, we presented a new chromosome-level genome assembly of such NSR females using Illumina, HiFi, and Hi-C sequencing technologies. The new assembly (Mal.V2_NSR) is 838.39 Mb in length, and the N50 of the contigs is 49.8 Mb. Compared with the previous assembly obtained using the continuous long-read sequencing technology (Mal.V1_CLR), we found a remarkable increase of continuity in the new assembly Mal.V2_NSR with a 20-times longer contig N50. Chromosomes 2 and 12 were assembled into a single contig, respectively. Meanwhile, two highly contiguous haplotype assemblies were also obtained, with contig N50 being 14.54 and 12.13 Mb, respectively. BUSCO and Merqury analyses indicate completeness and high accuracy of these three assemblies. A comparative genomic analysis revealed substantial structural variations (SVs) between Mal.V2_NSR and Mal.V1_CLR and two phased haplotype assemblies, as well as whole chromosome fusion events when compared with the zig-zag eel. Additionally, our newly obtained assembly provides a genomic view of sex-related genes and a complete landscape of the MHC genes. Therefore, these high-quality genome assemblies would provide great help for future breeding works of the swamp eel, and it is a valuable new reference for genetic and genomic studies of this species.
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Affiliation(s)
- Hai-Feng Tian
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
| | - Qiaomu Hu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
| | - Hong-Yi Lu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
- College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Zhong Li
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
- *Correspondence: Zhong Li,
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3
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Xu S, Zhang S, Zhang W, Liu H, Wang M, Zhong L, Bian W, Chen X. Genome-Wide Identification, Phylogeny, and Expression Profile of the Dmrt (Doublesex and Mab-3 Related Transcription Factor) Gene Family in Channel Catfish ( Ictalurus punctatus). Front Genet 2022; 13:891204. [PMID: 35571040 PMCID: PMC9095985 DOI: 10.3389/fgene.2022.891204] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 03/31/2022] [Indexed: 11/13/2022] Open
Abstract
The Dmrt (Doublesex and Mab-3 related transcription factor) gene family is a class of crucial transcription factors characterized by a conserved DM domain related to sex determination and differentiation, which has been systematically described in various teleost fish, but less in channel catfish (Ictalurus punctatus), an important global aquaculture species in the US and China. In this study, seven Dmrt genes from channel catfish genome were identified and analyzed using bioinformatics methods. Seven IpDmrt genes were distributed unevenly across five chromosomes. Synteny analysis revealed that Dmrt1, Dmrt2a, Dmrt2b, Dmrt3, Dmrt4, and Dmrt5 were relatively conserved in teleost fish. Tissue distribution analysis showed that IpDmrt1, IpDmrt2b, IpDmrt5, and IpDmrt6 exhibited sexually dimorphic expression patterns and, among them, IpDmrt1 and IpDmrt6 had high expression levels in the testes, while IpDmrt2b and IpDmrt5 had more significant expression levels in the ovaries than in other tissues. After 17β-estradiol treatment, IpDmrt2b and IpDmrt5 were significantly up regulated, while the expression of IpDmrt1 and IpDmrt6 was significantly repressed in XY channel catfish ovaries compared with XX channel catfish ovaries. The present study provides a comprehensive insight into the Dmrt gene family of channel catfish. The results suggest that IpDmrt1 and IpDmrt6 may play an important role in testis differentiation/development, while IpDmrt2b and IpDmrt5 are critical in ovary development in this species.
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Affiliation(s)
- Siqi Xu
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang, China
| | - Shiyong Zhang
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Wenping Zhang
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang, China
| | - Hongyan Liu
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
| | - Minghua Wang
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Liqiang Zhong
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Wenji Bian
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
| | - Xiaohui Chen
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, China
- College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang, China
- The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China
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Zhang Z, Zhang K, Chen S, Zhang Z, Zhang J, You X, Bian C, Xu J, Jia C, Qiang J, Zhu F, Li H, Liu H, Shen D, Ren Z, Chen J, Li J, Gao T, Gu R, Xu J, Shi Q, Xu P. Draft genome of the protandrous Chinese black porgy, Acanthopagrus schlegelii. Gigascience 2018; 7:1-7. [PMID: 29659813 PMCID: PMC5893958 DOI: 10.1093/gigascience/giy012] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 02/12/2018] [Indexed: 01/08/2023] Open
Abstract
Background As one of the most popular and valuable commercial marine fishes in China and East Asian countries, the Chinese black porgy (Acanthopagrus schlegelii), also known as the blackhead seabream, has some attractive characteristics such as fast growth rate, good meat quality, resistance to diseases, and excellent adaptability to various environments. Furthermore, the black porgy is a good model for investigating sex changes in fish due to its protandrous hermaphroditism. Here, we obtained a high-quality genome assembly of this interesting teleost species and performed a genomic survey on potential genes associated with the sex-change phenomenon. Findings We generated 175.4 gigabases (Gb) of clean sequence reads using a whole-genome shotgun sequencing strategy. The final genome assembly is approximately 688.1 megabases (Mb), accounting for 93% of the estimated genome size (739.6 Mb). The achieved scaffold N50 is 7.6 Mb, reaching a relatively high level among sequenced fish species. We identified 19 465 protein-coding genes, which had an average transcript length of 17.3 kb. By performing a comparative genomic analysis, we found 3 types of genes potentially associated with sex change, which are useful for studying the genetic basis of the protandrous hermaphroditism. Conclusions We provide a draft genome assembly of the Chinese black porgy and discuss the potential genetic mechanisms of sex change. These data are also an important resource for studying the biology and for facilitating breeding of this economically important fish.
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Affiliation(s)
- Zhiyong Zhang
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Kai Zhang
- Freshwater Fishery Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu 214081, China.,Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China.,BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, Guangdong 518083, China
| | - Shuyin Chen
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Zhiwei Zhang
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Jinyong Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430000, China
| | - Xinxin You
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China
| | - Chao Bian
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China.,BGI-Zhenjiang Institute of Hydrobiology, Zhenjiang, Jiangsu 212000, China
| | - Jin Xu
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Chaofeng Jia
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Jun Qiang
- Freshwater Fishery Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu 214081, China
| | - Fei Zhu
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Hongxia Li
- Freshwater Fishery Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu 214081, China
| | - Hailin Liu
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Dehua Shen
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Zhonghong Ren
- Jiangsu Marine Fishery Research Institute, Nantong, Jiangsu 226007, China
| | - Jieming Chen
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China
| | - Jia Li
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China
| | - Tianheng Gao
- College of Oceanography, Hohhai University, Nanjing, Jiangsu 210098, China
| | - Ruobo Gu
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China.,BGI-Zhenjiang Institute of Hydrobiology, Zhenjiang, Jiangsu 212000, China
| | - Junmin Xu
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China.,BGI-Zhenjiang Institute of Hydrobiology, Zhenjiang, Jiangsu 212000, China
| | - Qiong Shi
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China.,BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, Guangdong 518083, China.,BGI-Zhenjiang Institute of Hydrobiology, Zhenjiang, Jiangsu 212000, China
| | - Pao Xu
- Freshwater Fishery Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu 214081, China
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Genome-wide analysis of brain and gonad transcripts reveals changes of key sex reversal-related genes expression and signaling pathways in three stages of Monopterus albus. PLoS One 2017; 12:e0173974. [PMID: 28319194 PMCID: PMC5358790 DOI: 10.1371/journal.pone.0173974] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 03/01/2017] [Indexed: 12/21/2022] Open
Abstract
Background The natural sex reversal severely affects the sex ratio and thus decreases the productivity of the rice field eel (Monopterus albus). How to understand and manipulate this process is one of the major issues for the rice field eel stocking. So far the genomics and transcriptomics data available for this species are still scarce. Here we provide a comprehensive study of transcriptomes of brain and gonad tissue in three sex stages (female, intersex and male) from the rice field eel to investigate changes in transcriptional level during the sex reversal process. Results Approximately 195 thousand unigenes were generated and over 44.4 thousand were functionally annotated. Comparative study between stages provided multiple differentially expressed genes in brain and gonad tissue. Overall 4668 genes were found to be of unequal abundance between gonad tissues, far more than that of the brain tissues (59 genes). These genes were enriched in several different signaling pathways. A number of 231 genes were found with different levels in gonad in each stage, with several reproduction-related genes included. A total of 19 candidate genes that could be most related to sex reversal were screened out, part of these genes’ expression patterns were validated by RT-qPCR. The expression of spef2, maats1, spag6 and dmc1 were abundant in testis, but was barely detected in females, while the 17β-hsd12, zpsbp3, gal3 and foxn5 were only expressed in ovary. Conclusion This study investigated the complexity of brain and gonad transcriptomes in three sex stages of the rice field eel. Integrated analysis of different gene expression and changes in signaling pathways, such as PI3K-Akt pathway, provided crucial data for further study of sex transformation mechanisms.
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6
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Qu XC, Jiang JY, Cheng C, Feng L, Liu QG. Cloning and transcriptional expression of a novel gene during sex inversion of the rice field eel (Monopterus albus). SPRINGERPLUS 2015; 4:745. [PMID: 26693104 PMCID: PMC4666882 DOI: 10.1186/s40064-015-1544-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/18/2015] [Indexed: 01/08/2023]
Abstract
We performed annealing control primer (ACP)-based differential-display reverse transcription-polymerase chain reaction (DDRT-PCR) to isolate differentially expressed genes (DEGs) from the stage IV ovary and ovotestis of the rice field eel, Monopterus albus. Using 20
arbitrary ACP primers, 14 DEG expressed-sequence tags were identified and sequenced. The transcriptional expression of one DEG, G2, was significantly greater in the ovotestis than the stage IV ovary. To understand the role of G2 in sex inversion, G2 cDNA was cloned and semi-RT-PCR, real time PCR were performed during gonad development. The full-length G2 cDNA was 650 base pairs (bp) and it comprised a 5′-untranslated region (UTR) of 82 bp, a 3′-UTR of 121 bp and an open reading frame of 444 bp that encoded a 148-amino acid protein. The expression of G2 was weak during early ovarian development
until the stage IV ovary, but expression increased significantly with gonad development. We speculate that G2 may play an important function during sex inversion and testis development in the rice field eel, but the full details of the function of this gene requires further research.
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Affiliation(s)
- X C Qu
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
| | - J Y Jiang
- College of Life Sciences, Guangxi Normal University, Guilin, 541004 China.,Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guangxi Normal University, Guilin, 541004 China
| | - C Cheng
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
| | - L Feng
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
| | - Q G Liu
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
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Gao Y, Guo W, Hu Q, Zou M, Tang R, Chi W, Li D. Characterization and differential expression patterns of conserved microRNAs and mRNAs in three genders of the rice field eel (Monopterus albus). Sex Dev 2014; 8:387-98. [PMID: 25427634 DOI: 10.1159/000369181] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2014] [Indexed: 11/19/2022] Open
Abstract
MicroRNAs (miRNAs) are endogenous small RNAs that can regulate target mRNAs by binding to their sequences in the 3' untranslated region. The expression of miRNAs and their biogenetic pathway are involved in sexual differentiation and in the regulation of the development of germ cells and gonadal somatic cells. The rice field eel (Monopterus albus) undergoes a natural sexual transformation from female to male via an intersex stage during its life cycle. To investigate the molecular mechanisms of this sexual transformation, miRNAs present in the different sexual stages of the rice field eel were identified by high-throughput sequencing technology. A significantly differential expression among the 3 genders (p < 0.001) was observed for 48 unique miRNAs and 3 miRNAs*. Only 9 unique miRNAs showed a more than 8-fold change in their expression among the 3 genders, including mal-miR-430a and mal-miR-430c which were higher in females than in males. However, mal-miR-430b was only detected in males. Several potential miRNA target genes (cyp19a, cyp19b, nr5a1b, foxl2 amh, and vasa) were also investigated. Real-time RT-PCR demonstrated highly specific expression patterns of these genes in the 3 genders of the rice field eel. Many of these genes are targets of mal-miR-430b according to the TargetScan and miRTarBase. These results suggest that the miR-430 family may be involved in the sexual transformation of the rice field eel.
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Affiliation(s)
- Yu Gao
- College of Fisheries, Huazhong Agricultural University, and Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan, PR China
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8
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Hu Q, Guo W, Gao Y, Tang R, Li D. Molecular cloning and analysis of gonadal expression of Foxl2 in the rice-field eel Monopterus albus. Sci Rep 2014; 4:6884. [PMID: 25363394 PMCID: PMC4217102 DOI: 10.1038/srep06884] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 10/13/2014] [Indexed: 12/16/2022] Open
Abstract
We isolated the complete Foxl2 (Foxl2a) cDNA from the Monopterus albus ovary. An alignment of known Foxl2 amino-acid sequences confirmed the conservation of the Foxl2 open reading frame, especially the forkhead domain and C-terminal region. The expression of Foxl2 was detected in the brain, eyes, and gonads. A high level of Foxl2 expression in the ovary before sex reversal, but its transcripts decreased sharply when the gonad developed into the ovotestis and testis. The correlation between the Foxl2 expression and the process of sex development revealed the important function of Foxl2 during the sex reversal of M. albus. Immunohistochemical analysis showed that Foxl2 was expressed abundantly in granulosa cells and in the interstitial cells of the ovotestis and testis. These results suggest that Foxl2 plays a pivotal role in the development and maintenance of ovarian function. Foxl2 may be also involved in the early development of testis and the development of ocular structures of M. albus.
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Affiliation(s)
- Qing Hu
- 1] College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China [2] Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, China [3] Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan 430070, China
| | - Wei Guo
- 1] College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China [2] Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, China [3] Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan 430070, China
| | - Yu Gao
- 1] College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China [2] Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, China [3] Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan 430070, China
| | - Rong Tang
- 1] College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China [2] Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, China [3] Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan 430070, China
| | - Dapeng Li
- 1] College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China [2] Life Science College, Hunan University of Arts and Science, Changde 415000, China [3] Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, China [4] Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan 430070, China
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9
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Zhao JQ, Xie SS, Liu WB, Xiao YM, Zeng XM, Deng M, Gong L, Liu JP, Chen PC, Zhou J, Hu XH, Lv JH, Yu XQ, Wang D, Li C, Peng YL, Liao GP, Liu Y, Li DWC. Molecular Cloning of the Genes Encoding the PR55/Bβ/δ Regulatory Subunits for PP-2A and Analysis of Their Functions in Regulating Development of Goldfish, Carassius auratus. GENE REGULATION AND SYSTEMS BIOLOGY 2010; 4:135-48. [PMID: 21245947 PMCID: PMC3020040 DOI: 10.4137/grsb.s6065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The protein phosphatase-2A (PP-2A), one of the major phosphatases in eukaryotes, is a heterotrimer, consisting of a scaffold A subunit, a catalytic C subunit and a regulatory B subunit. Previous studies have shown that besides regulating specific PP-2A activity, various B subunits encoded by more than 16 different genes, may have other functions. To explore the possible roles of the regulatory subunits of PP-2A in vertebrate development, we have cloned the PR55/B family regulatory subunits: β and δ, analyzed their tissue specific and developmental expression patterns in Goldfish ( Carassius auratus). Our results revealed that the full-length cDNA for PR55/Bβ consists of 1940 bp with an open reading frame of 1332 nucleotides coding for a deduced protein of 443 amino acids. The full length PR55/Bδ cDNA is 2163 bp containing an open reading frame of 1347 nucleotides encoding a deduced protein of 448 amino acids. The two isoforms of PR55/B display high levels of sequence identity with their counterparts in other species. The PR55/Bβ mRNA and protein are detected in brain and heart. In contrast, the PR55/Bδ is expressed in all 9 tissues examined at both mRNA and protein levels. During development of goldfish, the mRNAs for PR55/Bβ and PR55/Bδ show distinct patterns. At the protein level, PR55/Bδ is expressed at all developmental stages examined, suggesting its important role in regulating goldfish development. Expression of the PR55/Bδ anti-sense RNA leads to significant downregulation of PR55/Bδ proteins and caused severe abnormality in goldfish trunk and eye development. Together, our results suggested that PR55/Bδ plays an important role in governing normal trunk and eye formation during goldfish development.
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Affiliation(s)
- Jun-Qiong Zhao
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Si-Si Xie
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Wen-Bin Liu
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Ya-Mei Xiao
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xiao-Ming Zeng
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Mi Deng
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USA
| | - Lili Gong
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USA
| | - Jin-Ping Liu
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USA
| | - Pei-Chao Chen
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Jie Zhou
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xiao-Hui Hu
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Jia-Han Lv
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xiang-Qian Yu
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Dao Wang
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Chi Li
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yun-Lei Peng
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Gao-Peng Liao
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yun Liu
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - David Wan-Cheng Li
- Key Laboratory of Protein Chemistry and Developmental Biology of Educational Ministry of China, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USA
- Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USA
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