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Wang Y, Su C, Liu Q, Hao X, Han S, Doretto LB, Rosa IF, Yang Y, Shao C, Wang Q. Transcriptome Analysis Revealed the Early Heat Stress Response in the Brain of Chinese Tongue Sole ( Cynoglossus semilaevis). Animals (Basel) 2023; 14:84. [PMID: 38200815 PMCID: PMC10777917 DOI: 10.3390/ani14010084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 01/12/2024] Open
Abstract
As a common influencing factor in the environment, temperature greatly influences the fish that live in the water all their life. The essential economic fish Chinese tongue sole (Cynoglossus semilaevis), a benthic fish, will experience both physiological and behavioral changes due to increases in temperature. The brain, as the central hub of fish and a crucial regulatory organ, is particularly sensitive to temperature changes and will be affected. However, previous research has mainly concentrated on the impact of temperature on the gonads of C. semilaevis. Instead, our study examines the brain using transcriptomics to investigate specific genes and pathways that can quickly respond to temperature changes. The fish were subjected to various periods of heat stress (1 h, 2 h, 3 h, and 5 h) before extracting the brain for transcriptome analysis. After conducting transcriptomic analyses, we identified distinct genes and pathways in males and females. The pathways were mainly related to cortisol synthesis and secretion, neuroactive ligand-receptor interactions, TGF beta signaling pathway, and JAK/STAT signaling pathway, while the genes included the HSP family, tshr, c-fos, c-jun, cxcr4, camk2b, and igf2. Our study offers valuable insights into the regulation mechanisms of the brain's response to temperature stress.
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Affiliation(s)
- Yue Wang
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin 300384, China; (Y.W.); (Y.Y.)
| | - Chengcheng Su
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Qian Liu
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Xiancai Hao
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Shenglei Han
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Lucas B. Doretto
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Ivana F. Rosa
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 01049-010, Brazil;
| | - Yanjing Yang
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin 300384, China; (Y.W.); (Y.Y.)
| | - Changwei Shao
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China
| | - Qian Wang
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China
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Zhao Y, Mei Y, Chen HJ, Zhang LT, Wang H, Ji XS. Profiling expression changes of genes associated with temperature and sex during high temperature-induced masculinization in the Nile tilapia brain. Physiol Genomics 2019; 51:159-168. [DOI: 10.1152/physiolgenomics.00117.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Fish sex-determining mechanisms can be classified as genotypic (GSD), temperature (TSD), or genotypic plus temperature effects (GSD+TE). Previous studies have shown that culturing water temperature during thermosensitive periods (TSP) could affect the expression of many genes in the gonad in some fish. However, few studies have focused on gene expression changes in the brain after temperature treatment during TSP in fish species. In this study, three families were developed by crossing XX neomales with XX females and one of them was used for transcriptome analysis. The results showed that a total of 105, 3164 and 4666 DEGs were respectively obtained in FC (female control) vs. FT (high temperature-treated females at TSP), FC vs. MC (male control), and MC vs. FT comparison groups. By profiling analysis, we show that the mRNA expression levels of 16 differentially expressed genes (DEGs) exhibited significant downregulation or upregulation after high temperature treatment and reached a similar level as that in MC. Among the 16 DEGs, LOC100699848 (lysine specific demethylase 6A) and Jarid2 contained JmjC domain, showing the possible important role of JmjC domain in response to temperature treatment in Nile tilapia. Kdm6b (lysine demethylase 6B) and Jarid2 have been shown to play important roles in reptile TSD, showing the relative conservation of underlying regulation mechanisms between TSD in reptile and TSD or GSD+TE in fish species. Finally, the transcriptome profiling was validated by quantitative real-time PCR in nine selected genes. These results provide a direction for investigating the GSD+TE molecular mechanism in fish species.
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Affiliation(s)
- Yan Zhao
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Yuan Mei
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Hong Ju Chen
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Li Tao Zhang
- Department of Imaging, Taian Central Hospital Number 29, Taian, Shangdong, China
| | - Hui Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Xiang Shan Ji
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
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Robledo D, Ribas L, Cal R, Sánchez L, Piferrer F, Martínez P, Viñas A. Gene expression analysis at the onset of sex differentiation in turbot (Scophthalmus maximus). BMC Genomics 2015; 16:973. [PMID: 26581195 PMCID: PMC4652359 DOI: 10.1186/s12864-015-2142-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 10/23/2015] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Controlling sex ratios is essential for the aquaculture industry, especially in those species with sex dimorphism for relevant productive traits, hence the importance of knowing how the sexual phenotype is established in fish. Turbot, a very important fish for the aquaculture industry in Europe, shows one of the largest sexual growth dimorphisms amongst marine cultured species, being all-female stocks a desirable goal for the industry. Although important knowledge has been achieved on the genetic basis of sex determination (SD) in this species, the master SD gene remains unknown and precise information on gene expression at the critical stage of sex differentiation is lacking. In the present work, we examined the expression profiles of 29 relevant genes related to sex differentiation, from 60 up to 135 days post fertilization (dpf), when gonads are differentiating. We also considered the influence of three temperature regimes on sex differentiation. RESULTS The first sex-related differences in molecular markers could be observed at 90 days post fertilization (dpf) and so we have called that time the onset of sex differentiation. Three genes were the first to show differential expression between males and females and also allowed us to sex turbot accurately at the onset of sex differentiation (90 dpf): cyp19a1a, amh and vasa. The expression of genes related to primordial germ cells (vasa, gsdf, tdrd1) started to increase between 75-90 dpf and vasa and tdrd1 later presented higher expression in females (90-105 dpf). Two genes placed on the SD region of turbot (sox2, fxr1) did not show any expression pattern suggestive of a sex determining function. We also detected changes in the expression levels of several genes (ctnnb1, cyp11a, dmrt2 or sox6) depending on culture temperature. CONCLUSION Our results enabled us to identify the first sex-associated genetic cues (cyp19a1a, vasa and amh) at the initial stages of gonad development in turbot (90 dpf) and to accurately sex turbot at this age, establishing the correspondence between gene expression profiles and histological sex. Furthermore, we profiled several genes involved in sex differentiation and found specific temperature effects on their expression.
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Affiliation(s)
- Diego Robledo
- Departamento de Genética, Facultad de Biología, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - Laia Ribas
- Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain.
| | - Rosa Cal
- Instituto Español de Oceanografía, Centro Oceanográfico de Vigo, 36390, Vigo, Spain.
| | - Laura Sánchez
- Departamento de Genética. Facultad de Veterinaria, Universidade de Santiago de Compostela, Campus de Lugo, 27002, Lugo, Spain.
| | - Francesc Piferrer
- Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003, Barcelona, Spain.
| | - Paulino Martínez
- Departamento de Genética. Facultad de Veterinaria, Universidade de Santiago de Compostela, Campus de Lugo, 27002, Lugo, Spain.
| | - Ana Viñas
- Departamento de Genética, Facultad de Biología, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
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Meyer BS, Salzburger W. A novel primer set for multilocus phylogenetic inference in East African cichlid fishes. Mol Ecol Resour 2012; 12:1097-104. [PMID: 22816488 DOI: 10.1111/j.1755-0998.2012.03169.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The cichlid fishes in the East African Great Lakes are a prime model system for the study of adaptive radiation. Therefore, the availability of an elaborate phylogenetic framework is an important prerequisite. Previous phylogenetic hypotheses on East African cichlids are mainly based on mitochondrial and/or fragment-based markers, and, to date, no taxon-rich phylogeny exists that is based on multilocus DNA sequence data. Here, we present the design of an extensive new primer set (24 nuclear makers) for East African cichlids that will be used for multilocus phylogenetic analyses in the future. The primers are designed to work for both Sanger sequencing and next-generation sequencing with the 454 technology. As a proof of principle, we validate these primers in a phylogenetically representative set of 16 cichlid species from Lake Tanganyika and main river systems in the area and provide a basic evaluation of the markers with respect to marker length and diversity indices.
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Affiliation(s)
- Britta S Meyer
- Zoological Institute, University of Basel, Basel, Switzerland
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Mayfield AB, Wang LH, Tang PC, Fan TY, Hsiao YY, Tsai CL, Chen CS. Assessing the impacts of experimentally elevated temperature on the biological composition and molecular chaperone gene expression of a reef coral. PLoS One 2011; 6:e26529. [PMID: 22046302 PMCID: PMC3203140 DOI: 10.1371/journal.pone.0026529] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Accepted: 09/28/2011] [Indexed: 11/18/2022] Open
Abstract
Due to the potential for increasing ocean temperatures to detrimentally impact reef-building corals, there is an urgent need to better understand not only the coral thermal stress response, but also natural variation in their sub-cellular composition. To address this issue, while simultaneously developing a molecular platform for studying one of the most common Taiwanese reef corals, Seriatopora hystrix, 1,092 cDNA clones were sequenced and characterized. Subsequently, RNA, DNA and protein were extracted sequentially from colonies exposed to elevated (30°C) temperature for 48 hours. From the RNA phase, a heat shock protein-70 (hsp70)-like gene, deemed hsp/c, was identified in the coral host, and expression of this gene was measured with real-time quantitative PCR (qPCR) in both the host anthozoan and endosymbiotic dinoflagellates (genus Symbiodinium). While mRNA levels were not affected by temperature in either member, hsp/c expression was temporally variable in both and co-varied within biopsies. From the DNA phase, host and Symbiodinium hsp/c genome copy proportions (GCPs) were calculated to track changes in the biological composition of the holobiont during the experiment. While there was no temperature effect on either host or Symbiodinium GCP, both demonstrated significant temporal variation. Finally, total soluble protein was responsive to neither temperature nor exposure time, though the protein/DNA ratio varied significantly over time. Collectively, it appears that time, and not temperature, is a more important driver of the variation in these parameters, highlighting the need to consider natural variation in both gene expression and the molecular make-up of coral holobionts when conducting manipulative studies. This represents the first study to survey multiple macromolecules from both compartments of an endosymbiotic organism with methodologies that reflect their dual-compartmental nature, ideally generating a framework for assessing molecular-level changes within corals and other endosymbioses exposed to changes in their environment.
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Affiliation(s)
- Anderson B Mayfield
- National Museum of Marine Biology and Aquarium, Checheng, Pingtung, Taiwan, ROC.
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Lee BY, Howe AE, Conte MA, D'Cotta H, Pepey E, Baroiller JF, di Palma F, Carleton KL, Kocher TD. An EST resource for tilapia based on 17 normalized libraries and assembly of 116,899 sequence tags. BMC Genomics 2010; 11:278. [PMID: 20433739 PMCID: PMC2874815 DOI: 10.1186/1471-2164-11-278] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Accepted: 04/30/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Large collections of expressed sequence tags (ESTs) are a fundamental resource for analysis of gene expression and annotation of genome sequences. We generated 116,899 ESTs from 17 normalized and two non-normalized cDNA libraries representing 16 tissues from tilapia, a cichlid fish widely used in aquaculture and biological research. RESULTS The ESTs were assembled into 20,190 contigs and 36,028 singletons for a total of 56,218 unique sequences and a total assembled length of 35,168,415 bp. Over the whole project, a unique sequence was discovered for every 2.079 sequence reads. 17,722 (31.5%) of these unique sequences had significant BLAST hits (e-value < 10(-10)) to the UniProt database. CONCLUSION Normalization of the cDNA pools with double-stranded nuclease allowed us to efficiently sequence a large collection of ESTs. These sequences are an important resource for studies of gene expression, comparative mapping and annotation of the forthcoming tilapia genome sequence.
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Affiliation(s)
- Bo-Young Lee
- Department of Biology, University of Maryland, College Park, Maryland 20742, USA
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Abstract
The neocortex is the part of the brain that is involved in perception, cognition, and volitional motor control. In mammals it is a highly dynamic structure that has been dramatically altered in different lineages, and these alterations account for the remarkable variations in behavior that species exhibit. When we consider how this structure changes and becomes more complex in some mammals such as humans, we must also consider how the alterations that occur at macro levels of organization, such as the level of the individual and social system, as well as micro levels of organization, such as the level of neurons, synapses and molecules, impact the neocortex. It is also important to consider the constraints imposed on the evolution of the neocortex. Observations of highly conserved features of cortical organization that all mammals share, as well as the convergent evolution of similar features of organization, indicate that the constraints imposed on the neocortex are pervasive and restrict the avenues along which evolution can proceed. Although both genes and the laws of physics place formidable constraints on the evolution of all animals, humans have evolved a number of mechanisms that allow them to loosen these constraints and often alter the course of their own evolution. While this cortical plasticity is a defining feature of mammalian neocortex, it appears to be exaggerated in humans and could be considered a unique derivation of our species.
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Affiliation(s)
- Leah Krubitzer
- Center for Neuroscience and Department of Psychology, University of California-Davis, Davis, California 95618, USA.
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