1
|
Mennigen JA, Ramachandran D, Shaw K, Chaube R, Joy KP, Trudeau VL. Reproductive roles of the vasopressin/oxytocin neuropeptide family in teleost fishes. Front Endocrinol (Lausanne) 2022; 13:1005863. [PMID: 36313759 PMCID: PMC9606234 DOI: 10.3389/fendo.2022.1005863] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/23/2022] [Indexed: 12/02/2022] Open
Abstract
The vertebrate nonapeptide families arginine vasopressin (AVP) and oxytocin (OXT) are considered to have evolved from a single vasopressin-like peptide present in invertebrates and termed arginine vasotocin in early vertebrate evolution. Unprecedented genome sequence availability has more recently allowed new insight into the evolution of nonapeptides and especially their receptor families in the context of whole genome duplications. In bony fish, nonapeptide homologues of AVP termed arginine vasotocin (Avp) and an OXT family peptide (Oxt) originally termed isotocin have been characterized. While reproductive roles of both nonapeptide families have historically been studied in several vertebrates, their roles in teleost reproduction remain much less understood. Taking advantage of novel genome resources and associated technological advances such as genetic modifications in fish models, we here critically review the current state of knowledge regarding the roles of nonapeptide systems in teleost reproduction. We further discuss sources of plasticity of the conserved nonapeptide systems in the context of diverse reproductive phenotypes observed in teleost fishes. Given the dual roles of preoptic area (POA) synthesized Avp and Oxt as neuromodulators and endocrine/paracrine factors, we focus on known roles of both peptides on reproductive behaviour and the regulation of the hypothalamic-pituitary-gonadal axis. Emphasis is placed on the identification of a gonadal nonapeptide system that plays critical roles in both steroidogenesis and gamete maturation. We conclude by highlighting key research gaps including a call for translational studies linking new mechanistic understanding of nonapeptide regulated physiology in the context of aquaculture, conservation biology and ecotoxicology.
Collapse
Affiliation(s)
- Jan A. Mennigen
- Department of Biology, Faculty of Science, University of Ottawa, ON, Canada
| | - Divya Ramachandran
- Department of Biology, Faculty of Science, University of Ottawa, ON, Canada
| | - Katherine Shaw
- Department of Biology, Faculty of Science, University of Ottawa, ON, Canada
| | - Radha Chaube
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Keerikkattil P. Joy
- Department of Biotechnology, Cochin University of Science and Technology, Kochi, India
| | - Vance L. Trudeau
- Department of Biology, Faculty of Science, University of Ottawa, ON, Canada
| |
Collapse
|
2
|
Cleary JA, Tillitt DE, Vom Saal FS, Nicks DK, Claunch RA, Bhandari RK. Atrazine induced transgenerational reproductive effects in medaka (Oryzias latipes). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 251:639-650. [PMID: 31108297 DOI: 10.1016/j.envpol.2019.05.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/23/2019] [Accepted: 05/04/2019] [Indexed: 06/09/2023]
Abstract
Atrazine is presently one of the most abundantly used herbicides in the United States, and a common contaminant of natural water bodies and drinking waters in high-use areas. Dysregulation of reproductive processes has been demonstrated in atrazine exposed fish, including alteration of key endocrine pathways on hypothalamic-pituitary-gonadal (HPG) axis. However, the potential for atrazine-induced transgenerational inheritance of reproductive effects in fish has not been investigated. The present study examined the effects of early developmental atrazine exposure on transgenerational reproductive dysregulation in Japanese medaka (Oryzias latipes). F0 medaka were exposed to atrazine (ATZ, 5 or 50 μg/L), 17α-ethinylestradiol (EE2, 0.002 or 0.05 μg/L), or solvent control during the first twelve days of development with no subsequent exposure over three generations. This exposure overlapped with the critical developmental window for embryonic germ cell development, gonadogenesis, and sex determination. Exposed males and females of the F0 generation were bred to produce an F1 generation, and this was continued until the F2 generation. Sperm count and motility were not affected in F0 males; however, both parameters were significantly reduced in the males from F2 Low EE2 (0.002 μg/L), Low ATZ (5 μg/L), and High ATZ (50 μg/L) lineages. Fecundity was unaffected by atrazine or EE2 in F0 through F2 generations; however, fertilization rate was decreased in low atrazine and EE2 exposure lineages in the F2 generation. There were significant transgenerational differences in expression of the genes involved in steroidogenesis and DNA methylation. These results suggest that although early life exposure to atrazine did not cause significant phenotypes in the directly exposed F0 generation, subsequent generations of fish were at greater risk of reproductive dysfunction.
Collapse
Affiliation(s)
- Jacob A Cleary
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27412, USA
| | - Donald E Tillitt
- U.S. Geological Survey, Columbia Environmental Research Center, Columbia, MO 65201, USA
| | - Frederick S Vom Saal
- Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Diane K Nicks
- U.S. Geological Survey, Columbia Environmental Research Center, Columbia, MO 65201, USA
| | - Rachel A Claunch
- U.S. Geological Survey, Columbia Environmental Research Center, Columbia, MO 65201, USA
| | - Ramji K Bhandari
- Department of Biology, University of North Carolina Greensboro, Greensboro, NC 27412, USA.
| |
Collapse
|
3
|
Chen X, Wang J, Hou X, Yue W, Huang S, Wang C. Tissue expression profiles unveil the gene interaction of hepatopancreas, eyestalk, and ovary in the precocious female Chinese mitten crab, Eriocheir sinensis. BMC Genet 2019; 20:12. [PMID: 30683050 PMCID: PMC6347758 DOI: 10.1186/s12863-019-0716-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/18/2019] [Indexed: 02/02/2023] Open
Abstract
Background Sexual precocity is a common biological phenomenon in animal species. A large number of precocity individuals were identified in Chinese mitten crab Eriocheir sinensis, which caused huge economic loss annually. However, the underlying genetic basis of precocity in E. sinensis remains unclear to date. Results In this study, morphological and histological observation and comparative transcriptome analysis were conducted among different stages of precocious one-year-old and normal two-year-old sexually mature E. sinensis. The expression profiles of the ovary, hepatopancreas, and eyestalk tissues were presented and compared. Genes associated with lipid metabolic process, lipid transport, vitelline membrane formation, vitelline synthesis, and neuropeptide hormone-related genes were upregulated in the ovary, hepatopancreas, and eyestalk of precocious E. sinensis. Our results indicated that the eyestalk was involved in the neuroendocrine system providing neuropeptide hormones that may induce vitellogenesis in the hepatopancreas and further stimulate ovary development. The hepatopancreas is a site for energy storage and vitellogenin synthesis, and it may assist oogenesis through lipid transport in precocious E. sinensis. Conclusion We provided not only an effective and convenient phenotype measurement method for the identification of potential precocious E. sinensis detection but also valuable genetic resources and novel insights into the molecular mechanism of precocity in E. sinensis. The genetic basis of precocity in E. sinensis is an integrated gene regulatory network of eyestalk, hepatopancreas, and ovary tissues. Electronic supplementary material The online version of this article (10.1186/s12863-019-0716-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Xiaowen Chen
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,National Demonstration Center for Experimental Fisheries Science Education (Shanghai Ocean University), 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China
| | - Jun Wang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,National Demonstration Center for Experimental Fisheries Science Education (Shanghai Ocean University), 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China
| | - Xin Hou
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,National Demonstration Center for Experimental Fisheries Science Education (Shanghai Ocean University), 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China
| | - Wucheng Yue
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,National Demonstration Center for Experimental Fisheries Science Education (Shanghai Ocean University), 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China
| | - Shu Huang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,National Demonstration Center for Experimental Fisheries Science Education (Shanghai Ocean University), 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.,Shanghai Engineering Research Center of Aquaculture, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China
| | - Chenghui Wang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China. .,National Demonstration Center for Experimental Fisheries Science Education (Shanghai Ocean University), 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China. .,Shanghai Engineering Research Center of Aquaculture, 999, Hucheng huan Road, Lingang New City, Shanghai, 201306, China.
| |
Collapse
|
4
|
Lee STM, Keshavmurthy S, Fontana S, Takuma M, Chou WH, Chen CA. Transcriptomic response in Acropora muricata under acute temperature stress follows preconditioned seasonal temperature fluctuations. BMC Res Notes 2018; 11:119. [PMID: 29426371 PMCID: PMC5807827 DOI: 10.1186/s13104-018-3230-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 02/06/2018] [Indexed: 11/13/2022] Open
Abstract
Objective Global climate change has resulted in the decline of health and condition of various coral reefs worldwide. Here, we describe expression profiles of Acropora muricata collected during opposing seasons in Otsuki, Kochi, Japan to define the capacity of corals to cope with changing environmental conditions. Coral communities in Otsuki experience large temperature fluctuations between the winter (~ 16 °C) and summer (~ 27 °C). Results Coral nubbins that were collected in the summer showed no change in photochemical efficiency when exposed to thermal or cold stress, while winter samples showed a decrease in photochemical health when subjected to thermal stress. Under cold stress, corals that were collected in the summer showed an up-regulation of actin-related protein and serine/threonine protein kinase, while corals collected during the winter did not show any cellular stress. On the other hand, under thermal stress, the most notable change was the up-regulation of phosphoenolpyruvate carboxykinase in corals that were collected during the winter season. Our observations in the differential genes expressed under temperature-derived stress suggest that A. muricata from Kochi may maintain physiological resilience due to the frequently encountered environmental stress, and this may play a role in the coral’s thermal tolerance. Electronic supplementary material The online version of this article (10.1186/s13104-018-3230-z) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Sonny T M Lee
- Section of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Chicago Medicine, Chicago, IL, USA
| | | | - Silvia Fontana
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan.,Taiwan International Graduate Program (TIGP)-Biodiversity, Academia Sinica, Taipei, Taiwan.,National Taiwan Normal University, Taipei, Taiwan
| | - Mezaki Takuma
- Biological Institute on Kuroshio, Otsuki, Kochi, Japan
| | - Wen-Hua Chou
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan.,Taiwan International Graduate Program (TIGP)-Biodiversity, Academia Sinica, Taipei, Taiwan.,National Taiwan Normal University, Taipei, Taiwan
| | - Chaolun Allen Chen
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan. .,Taiwan International Graduate Program (TIGP)-Biodiversity, Academia Sinica, Taipei, Taiwan. .,Institute of Oceanography, National Taiwan University, Taipei, Taiwan.
| |
Collapse
|
5
|
Blázquez M, Medina P, Crespo B, Gómez A, Zanuy S. Identification of conserved genes triggering puberty in European sea bass males (Dicentrarchus labrax) by microarray expression profiling. BMC Genomics 2017; 18:441. [PMID: 28583077 PMCID: PMC5460432 DOI: 10.1186/s12864-017-3823-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 05/25/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Spermatogenesis is a complex process characterized by the activation and/or repression of a number of genes in a spatio-temporal manner. Pubertal development in males starts with the onset of the first spermatogenesis and implies the division of primary spermatogonia and their subsequent entry into meiosis. This study is aimed at the characterization of genes involved in the onset of puberty in European sea bass, and constitutes the first transcriptomic approach focused on meiosis in this species. RESULTS European sea bass testes collected at the onset of puberty (first successful reproduction) were grouped in stage I (resting stage), and stage II (proliferative stage). Transition from stage I to stage II was marked by an increase of 11ketotestosterone (11KT), the main fish androgen, whereas the transcriptomic study resulted in 315 genes differentially expressed between the two stages. The onset of puberty induced 1) an up-regulation of genes involved in cell proliferation, cell cycle and meiosis progression, 2) changes in genes related with reproduction and growth, and 3) a down-regulation of genes included in the retinoic acid (RA) signalling pathway. The analysis of GO-terms and biological pathways showed that cell cycle, cell division, cellular metabolic processes, and reproduction were affected, consistent with the early events that occur during the onset of puberty. Furthermore, changes in the expression of three RA nuclear receptors point at the importance of the RA-signalling pathway during this period, in agreement with its role in meiosis. CONCLUSION The results contribute to boost our knowledge of the early molecular and endocrine events that trigger pubertal development and the onset of spermatogenesis in fish. These include an increase in 11KT plasma levels and changes in the expression of several genes involved in cell proliferation, cell cycle progression, meiosis or RA-signalling pathway. Moreover, the results can be applied to study meiosis in this economically important fish species for Mediterranean countries, and may help to develop tools for its sustainable aquaculture.
Collapse
Affiliation(s)
- Mercedes Blázquez
- Instituto de Acuicultura de Torre la Sal, Consejo Superior de Investigaciones Científicas (IATS-CSIC), Ribera de Cabanes, 12595, Castellón, Spain. .,Instituto de Ciencias del Mar, Consejo Superior de Investigaciones Científicas (ICM-CSIC), Passeig Maritim 37-49, 08003, Barcelona, Spain.
| | - Paula Medina
- Instituto de Acuicultura de Torre la Sal, Consejo Superior de Investigaciones Científicas (IATS-CSIC), Ribera de Cabanes, 12595, Castellón, Spain.,Instituto de Ciencias del Mar, Consejo Superior de Investigaciones Científicas (ICM-CSIC), Passeig Maritim 37-49, 08003, Barcelona, Spain.,Present address: Universidad de Antofagasta, Avda Angamos 601, Antofagasta, Chile
| | - Berta Crespo
- Instituto de Acuicultura de Torre la Sal, Consejo Superior de Investigaciones Científicas (IATS-CSIC), Ribera de Cabanes, 12595, Castellón, Spain.,Present address: UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
| | - Ana Gómez
- Instituto de Acuicultura de Torre la Sal, Consejo Superior de Investigaciones Científicas (IATS-CSIC), Ribera de Cabanes, 12595, Castellón, Spain
| | - Silvia Zanuy
- Instituto de Acuicultura de Torre la Sal, Consejo Superior de Investigaciones Científicas (IATS-CSIC), Ribera de Cabanes, 12595, Castellón, Spain.
| |
Collapse
|
6
|
Pfennig F, Standke A, Gutzeit HO. The role of Amh signaling in teleost fish--Multiple functions not restricted to the gonads. Gen Comp Endocrinol 2015; 223:87-107. [PMID: 26428616 DOI: 10.1016/j.ygcen.2015.09.025] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/24/2015] [Accepted: 09/25/2015] [Indexed: 12/16/2022]
Abstract
This review summarizes the important role of Anti-Müllerian hormone (Amh) during gonad development in fishes. This Tgfβ-domain bearing hormone was named after one of its known functions, the induction of the regression of Müllerian ducts in male mammalian embryos. Later in development it is involved in male and female gonad differentiation and extragonadal expression has been reported in mammals as well. Teleosts lack Müllerian ducts, but they have amh orthologous genes. amh expression is reported from 21 fish species and possible regulatory interactions with further factors like sex steroids and gonadotropic hormones are discussed. The gonadotropin Fsh inhibits amh expression in all fish species studied. Sex steroids show no consistent influence on amh expression. Amh is produced in male Sertoli cells and female granulosa cells and inhibits germ cell proliferation and differentiation as well as steroidogenesis in both sexes. Therefore, Amh might be a central player in gonad development and a target of gonadotropic Fsh. Furthermore, there is evidence that an Amh-type II receptor is involved in germ cell regulation. Amh and its corresponding type II receptor are also present in brain and pituitary, at least in some teleosts, indicating additional roles of Amh effects in the brain-pituitary-gonadal axis. Unraveling Amh signaling is important in stem cell research and for reproduction as well as for aquaculture and in environmental science.
Collapse
Affiliation(s)
- Frank Pfennig
- Institut für Zoologie, TU Dresden, D-01062 Dresden, Germany.
| | - Andrea Standke
- Institut für Zoologie, TU Dresden, D-01062 Dresden, Germany
| | | |
Collapse
|
7
|
Kocmarek AL, Ferguson MM, Danzmann RG. Co-localization of growth QTL with differentially expressed candidate genes in rainbow trout. Genome 2015; 58:393-403. [PMID: 26360524 DOI: 10.1139/gen-2015-0047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We tested whether genes differentially expressed between large and small rainbow trout co-localized with familial QTL regions for body size. Eleven chromosomes, known from previous work to house QTL for weight and length in rainbow trout, were examined for QTL in half-sibling families produced in September (1 XY male and 1 XX neomale) and December (1 XY male). In previous studies, we identified 108 candidate genes for growth expressed in the liver and white muscle in a subset of the fish used in this study. These gene sequences were BLASTN aligned against the rainbow trout and stickleback genomes to determine their location (rainbow trout) and inferred location based on synteny with the stickleback genome. Across the progeny of all three males used in the study, 63.9% of the genes with differential expression appear to co-localize with the QTL regions on 6 of the 11 chromosomes tested in these males. Genes that co-localized with QTL in the mixed-sex offspring of the two XY males primarily showed up-regulation in the muscle of large fish and were related to muscle growth, metabolism, and the stress response.
Collapse
Affiliation(s)
- Andrea L Kocmarek
- Department of Integrative Biology, 50 Stone Rd. East, University of Guelph, Guelph, ON N1G 2W1, Canada.,Department of Integrative Biology, 50 Stone Rd. East, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Moira M Ferguson
- Department of Integrative Biology, 50 Stone Rd. East, University of Guelph, Guelph, ON N1G 2W1, Canada.,Department of Integrative Biology, 50 Stone Rd. East, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Roy G Danzmann
- Department of Integrative Biology, 50 Stone Rd. East, University of Guelph, Guelph, ON N1G 2W1, Canada.,Department of Integrative Biology, 50 Stone Rd. East, University of Guelph, Guelph, ON N1G 2W1, Canada
| |
Collapse
|
8
|
Kocmarek AL, Ferguson MM, Danzmann RG. Comparison of growth-related traits and gene expression profiles between the offspring of neomale (XX) and normal male (XY) rainbow trout. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2015; 17:229-243. [PMID: 25634055 DOI: 10.1007/s10126-015-9612-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 11/18/2014] [Indexed: 06/04/2023]
Abstract
All-female lines of fish are created by crossing sex reversed (XX genotype) males with normal females. All-female lines avoid the deleterious phenotypic effects that are typical of precocious maturation in males. To determine whether all-female and mixed sex populations of rainbow trout (Oncorhynchus mykiss) differ in performance, we compared the growth and gene expression profiles in progeny groups produced by crossing a XX male and a XY male to the same five females. Body weight and length were measured in the resulting all-female (XX) and mixed sex (XX/XY) offspring groups. Microarray experiments with liver and white muscle were used to determine if the gene expression profiles of large and small XX offspring differ from those in large and small XX/XY offspring. We detected no significant differences in body length and weight between offspring groups but XX offspring were significantly less variable in the value of these traits. A large number of upregulated genes were shared between the large XX and large XX/XY offspring; the small XX and small XX/XY offspring also shared similar expression profiles. No GO category differences were seen in the liver or between the large XX and large XX/XY offspring in the muscle. The greatest differences between the small XX and small XX/XY offspring were in the genes assigned to the "small molecule metabolic process" and "cellular metabolic process" GO level 3 categories. Similarly, genes within these categories as well as the category "macromolecule metabolic process" were more highly expressed in small compared to large XX fish.
Collapse
Affiliation(s)
- Andrea L Kocmarek
- Department of Integrative Biology, University of Guelph, 50 Stone Rd. East, Guelph, Ontario, N1G 2W1, Canada,
| | | | | |
Collapse
|
9
|
Schunter C, Vollmer SV, Macpherson E, Pascual M. Transcriptome analyses and differential gene expression in a non-model fish species with alternative mating tactics. BMC Genomics 2014; 15:167. [PMID: 24581002 PMCID: PMC4029132 DOI: 10.1186/1471-2164-15-167] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Accepted: 02/20/2014] [Indexed: 12/22/2022] Open
Abstract
Background Social dominance is important for the reproductive success of males in many species. In the black-faced blenny (Tripterygion delaisi) during the reproductive season, some males change color and invest in nest making and defending a territory, whereas others do not change color and ‘sneak’ reproductions when females lay their eggs. Using RNAseq, we profiled differential gene expression between the brains of territorial males, sneaker males, and females to study the molecular signatures of male dimorphism. Results We found that more genes were differentially expressed between the two male phenotypes than between males and females, suggesting that during the reproductive period phenotypic plasticity is a more important factor in differential gene expression than sexual dimorphism. The territorial male overexpresses genes related to synaptic plasticity and the sneaker male overexpresses genes involved in differentiation and development. Conclusions Previously suggested candidate genes for social dominance in the context of alternative mating strategies seem to be predominantly species-specific. We present a list of novel genes which are differentially expressed in Tripterygion delaisi. This is the first genome-wide study for a molecular non-model species in the context of alternative mating strategies and provides essential information for further studies investigating the molecular basis of social dominance.
Collapse
Affiliation(s)
- Celia Schunter
- Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Car, Acc, Cala St, Francesc 14 Blanes 17300 Girona, Spain.
| | | | | | | |
Collapse
|
10
|
Xiao J, Li Y, Jones-Brando L, Yolken RH. Abnormalities of neurotransmitter and neuropeptide systems in human neuroepithelioma cells infected by three Toxoplasma strains. J Neural Transm (Vienna) 2013; 120:1631-9. [PMID: 23821371 DOI: 10.1007/s00702-013-1064-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 06/22/2013] [Indexed: 02/08/2023]
Abstract
Since Toxoplasma gondii can establish a persistent infection in the central nervous system in humans, we studied its effects on a host's neurotransmitter and neuropeptide systems (NNS). Using microarray technology, we have screened the expression of genes coding for NNS in human neuroepithelioma cells in response to representative strains of Toxoplasma to identify potential target genes. Transcripts that displayed expression levels distinct from uninfected controls were examined by RT-PCR and Western blot. Our results indicate the presence of disturbed NNS upon Toxoplasma infection and the extent of this disturbance varies considerably among the three strains. In cells infected by type I strain, three neurotransmitter systems (dopamine, glutamate and serotonin) and two neuropeptides (PROK2 and TAC1) displayed abnormalities relative to controls. Type III infection led to the change of a critical enzyme, TDO2, in the kynurenine pathway. No significant effects of type II infection were found in the NNS. These data may have implications for understanding the pathogenesis and heterogeneity of neurologic disturbances in toxoplasmosis.
Collapse
Affiliation(s)
- Jianchun Xiao
- Stanley Division of Developmental Neurovirology, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD, 21287, USA,
| | | | | | | |
Collapse
|
11
|
Bellantuono AJ, Granados-Cifuentes C, Miller DJ, Hoegh-Guldberg O, Rodriguez-Lanetty M. Coral thermal tolerance: tuning gene expression to resist thermal stress. PLoS One 2012; 7:e50685. [PMID: 23226355 PMCID: PMC3511300 DOI: 10.1371/journal.pone.0050685] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 10/26/2012] [Indexed: 11/18/2022] Open
Abstract
The acclimatization capacity of corals is a critical consideration in the persistence of coral reefs under stresses imposed by global climate change. The stress history of corals plays a role in subsequent response to heat stress, but the transcriptomic changes associated with these plastic changes have not been previously explored. In order to identify host transcriptomic changes associated with acquired thermal tolerance in the scleractinian coral Acropora millepora, corals preconditioned to a sub-lethal temperature of 3°C below bleaching threshold temperature were compared to both non-preconditioned corals and untreated controls using a cDNA microarray platform. After eight days of hyperthermal challenge, conditions under which non-preconditioned corals bleached and preconditioned corals (thermal-tolerant) maintained Symbiodinium density, a clear differentiation in the transcriptional profiles was revealed among the condition examined. Among these changes, nine differentially expressed genes separated preconditioned corals from non-preconditioned corals, with 42 genes differentially expressed between control and preconditioned treatments, and 70 genes between non-preconditioned corals and controls. Differentially expressed genes included components of an apoptotic signaling cascade, which suggest the inhibition of apoptosis in preconditioned corals. Additionally, lectins and genes involved in response to oxidative stress were also detected. One dominant pattern was the apparent tuning of gene expression observed between preconditioned and non-preconditioned treatments; that is, differences in expression magnitude were more apparent than differences in the identity of genes differentially expressed. Our work revealed a transcriptomic signature underlying the tolerance associated with coral thermal history, and suggests that understanding the molecular mechanisms behind physiological acclimatization would be critical for the modeling of reefs in impending climate change scenarios.
Collapse
Affiliation(s)
- Anthony J Bellantuono
- Department of Biological Sciences, Florida International University, Miami, Florida, United States of America
| | | | | | | | | |
Collapse
|
12
|
Robertson LS, McCormick SD. Transcriptional profiling of the parr-smolt transformation in Atlantic salmon. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2012; 7:351-60. [PMID: 22951584 DOI: 10.1016/j.cbd.2012.07.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 07/31/2012] [Accepted: 07/31/2012] [Indexed: 01/03/2023]
Abstract
The parr-smolt transformation in Atlantic salmon (Salmo salar) is a complex developmental process that culminates in the ability to migrate to and live in seawater. We used GRASP 16K cDNA microarrays to identify genes that are differentially expressed in the liver, gill, hypothalamus, pituitary, and olfactory rosettes of smolts compared to parr. Smolts had higher levels of gill Na(+)/K(+)-ATPase activity, plasma cortisol and plasma thyroid hormones relative to parr. Across all five tissues, stringent microarray analyses identified 48 features that were differentially expressed in smolts compared to parr. Using a less stringent method we found 477 features that were differentially expressed at least 1.2-fold in smolts, including 172 features in the gill. Smolts had higher mRNA levels of genes involved in transcription, protein biosynthesis and folding, electron transport, oxygen transport, and sensory perception and lower mRNA levels for genes involved in proteolysis. Quantitative RT-PCR was used to confirm differential expression in select genes identified by microarray analyses and to quantify expression of other genes known to be involved in smolting. This study expands our understanding of the molecular processes that underlie smolting in Atlantic salmon and identifies genes for further investigation.
Collapse
|
13
|
Taboada X, Robledo D, Del Palacio L, Rodeiro A, Felip A, Martínez P, Viñas A. Comparative expression analysis in mature gonads, liver and brain of turbot (Scophthalmus maximus) by cDNA-AFLPS. Gene 2011; 492:250-61. [PMID: 22037609 DOI: 10.1016/j.gene.2011.10.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 09/08/2011] [Accepted: 10/10/2011] [Indexed: 11/28/2022]
Abstract
Turbot is one of the most important farmed fish in Europe. This species exhibits a considerable sexual dimorphism in growth and sexual maturity that makes the all-female production recommended for turbot farming. Our knowledge about the genetic basis of sex determination and the molecular regulation of gonad differentiation in this species is still limited. Our goal was to identify and compare gene expression and functions between testes and ovaries in adults in order to ascertain the relationship between the genes that could be involved in the gonad differentiation or related to the sex determination system. The identification of differentially expressed sex related genes is an initial step towards understanding the molecular mechanisms of gonad differentiation. For this, we carried out a transcriptome analysis based on cDNA-AFLP technique which allowed us to obtain an initial frame on sex-specific gene expression that will facilitate further analysis especially along the critical gonad differentiating period. With the aim of widening the study on sex-biased gene expression we reproduced the same experiments in two somatic tissues: liver and brain. We have selected the liver because it is the most analyzed one regarding sexual dimorphic gene expression and due to its importance in steroid hormones metabolism and the brain because the functional relationship between brain and gonad is documented. We found slight but important differences between sexes which deserve further investigation.
Collapse
Affiliation(s)
- Xoana Taboada
- Departamento de Genética, Facultad de Biología (CIBUS), Universidad de Santiago de Compostela Avda Lope Gómez de Marzoa, 15782 Santiago de Compostela, Spain
| | | | | | | | | | | | | |
Collapse
|
14
|
Morán P, Pérez-Figueroa A. Methylation changes associated with early maturation stages in the Atlantic salmon. BMC Genet 2011; 12:86. [PMID: 21982559 PMCID: PMC3197556 DOI: 10.1186/1471-2156-12-86] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 10/07/2011] [Indexed: 01/17/2023] Open
Abstract
Background Early maturation in the Atlantic salmon is an interesting subject for numerous research lines. Prior to sea migration, parr can reach sexual maturation and successfully fertilize adult female eggs during the reproductive season. These individuals are known as precocious parr, mature parr or "sneakers". Reasons for early maturation are unknown and this transitory stage is usually considered to be a threshold trait. Here, we compare methylation patterns between mature and immature salmon parr from two different rivers in order to infer if such methylation differences may be related to their maturation condition. First we analyzed genetic differences between rivers by means of AFLPs. Then, we compared the DNA methylation differences between mature and immature parrs, using a Methylation-Sensitive Amplified Polymorphism (MSAP), which is a modification of the AFLPs method by making use of the differential sensitivity of a pair of restriction enzymes isoschizomeres to cytosine methylation. The tissues essayed included brain, liver and gonads. Results AFLPs statistical analysis showed that there was no significant differentiation between rivers or a significant differentiation between maturation states in each river. MSAP statistical analysis showed that among the three tissues sampled, the gonads had the highest number of significant single-locus variation among populations with 74 loci followed by brain with 70 and finally liver with only 12. Principal components analysis (PCA) of the MSAP profiles revealed different profiles among different tissues (liver, brain and testis) clearly separating maturation states in the testis tissue when compared to the liver. Conclusions Our results reveal that genetically-similar mature and immature salmon parr present high levels of DNA methylation variation in two of the three analyzed tissues. We hypothesize that early maturation may be mostly mediated by epigenetic processes rather than by genetic differences between parrs. To our knowledge this is the first study that attempt to link phenotypic plasticity in salmonids and epigenetic changes.
Collapse
Affiliation(s)
- Paloma Morán
- Dpto, Bioquímica, Xenética e Inmunoloxía, Faculta de Biología, Universidade de Vigo, Vigo 36310, Spain.
| | | |
Collapse
|
15
|
Davey GC, Calduch-Giner JA, Houeix B, Talbot A, Sitjà-Bobadilla A, Prunet P, Pérez-Sánchez J, Cairns MT. Molecular profiling of the gilthead sea bream (Sparus aurata L.) response to chronic exposure to the myxosporean parasite Enteromyxum leei. Mol Immunol 2011; 48:2102-12. [PMID: 21803425 DOI: 10.1016/j.molimm.2011.07.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 07/04/2011] [Accepted: 07/06/2011] [Indexed: 12/21/2022]
Abstract
The aim of the present work was to investigate the transcriptome response of gilthead sea bream (Sparus aurata) after challenge with the myxosporean Enteromyxum leei, a wide-spread enteric parasite causing heavy economic losses in Mediterranean sparid farms. This parasite causes severe desquamative enteritis which usually leads to death of the fish, and there are no preventative or curative treatments for this enteromyxosis. After 113 days of exposure to parasite-contaminated effluent, fish were classified into three cohorts: control fish not exposed to parasite, those that were exposed and infected, and those that were exposed but not infected. In order to detect target genes that may be candidates for infective status or resistance, a cDNA microarray containing 18,490 cDNA clones enriched in genes differentially expressed after infection was hybridised with head kidney and intestine samples. In infected fish, 371 and 373 genes were differentially regulated at the >1.5-fold level in intestine and head kidney respectively, whereas in non-infected fish 175 and 501 genes were differentially regulated in these tissues, respectively. A global marked gene down-regulation was evident in infected fish, mainly in genes involved in the immune and acute phase response particularly complement and mannose binding lectin. Microarray analysis demonstrated a complex interplay between host and/or parasite derived proteases and protease inhibitors, apoptosis, cell proliferation and antioxidant defence genes in exposed fish. In the head kidney of non-infected fish a marked depression of genes involved in the acute phase response was evident. By contrast, in the intestine of non-infected fish, interferon-stimulated and MHC class II genes involved in antigen processing and presentation were up-regulated, possibly indicating that an active immune response at the local level is important to avoid infection with or proliferation of the parasite.
Collapse
Affiliation(s)
- Grace C Davey
- Ryan Institute, National University of Ireland Galway, Ireland
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Dewan AK, Ramey ML, Tricas TC. Arginine vasotocin neuronal phenotypes, telencephalic fiber varicosities, and social behavior in butterflyfishes (Chaetodontidae): potential similarities to birds and mammals. Horm Behav 2011; 59:56-66. [PMID: 20950619 DOI: 10.1016/j.yhbeh.2010.10.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 10/03/2010] [Accepted: 10/04/2010] [Indexed: 12/26/2022]
Abstract
The neuropeptide arginine vasopressin (AVP) influences many social behaviors through its action in the forebrain of mammals. However, the function of the homologous arginine vasotocin (AVT) in the forebrain of fishes, specifically the telencephalon remains unresolved. We tested whether the density of AVT-immunoreactive (-ir) fiber varicosities, somata size or number of AVT-ir neuronal phenotypes within the forebrain were predictive of social behavior in reproductive males of seven species of butterflyfishes (family Chaetodontidae) in four phylogenetic clades. Similar to other fishes, the aggressive (often territorial) species in most cases had larger AVT-ir cells within the gigantocellular preoptic cell group. Linear discriminant function analyses demonstrated that the density of AVT-ir varicosities within homologous telencephalic nuclei to those important for social behavior in mammals and birds were predictive of aggressive behavior, social affiliations, and mating system. Of note, the density of AVT-ir varicosities within the ventral nucleus of the ventral telencephalon, thought to be homologous to the septum of other vertebrates, was the strongest predictor of aggressive behavior, social affiliation, and mating system. These results are consistent with the postulate that AVT within the telencephalon of fishes plays an important role in social behavior and may function in a similar manner to that of AVT/AVP in birds and mammals despite having cell populations solely within the preoptic area.
Collapse
Affiliation(s)
- Adam K Dewan
- Department of Zoology, University of Hawaii, Honolulu, HI 96822, USA.
| | | | | |
Collapse
|
17
|
Differential effects of three canonical Toxoplasma strains on gene expression in human neuroepithelial cells. Infect Immun 2010; 79:1363-73. [PMID: 21149591 DOI: 10.1128/iai.00947-10] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Strain type is one of the key factors suspected to play a role in determining the outcome of Toxoplasma infection. In this study, we examined the transcriptional profile of human neuroepithelioma cells in response to representative strains of Toxoplasma by using microarray analysis to characterize the strain-specific host cell response. The study of neural cells is of interest in light of the ability of Toxoplasma to infect the brain and to establish persistent infection within the central nervous system. We found that the extents of the expression changes varied considerably among the three strains. Neuroepithelial cells infected with Toxoplasma type I exhibited the highest level of differential gene expression, whereas type II-infected cells had a substantially smaller number of genes which were differentially expressed. Cells infected with type III exhibited intermediate effects on gene expression. The three strains also differed in the individual genes and gene pathways which were altered following cellular infection. For example, gene ontology (GO) analysis indicated that type I infection largely affects genes related to the central nervous system, while type III infection largely alters genes which affect nucleotide metabolism; type II infection does not alter the expression of a clearly defined set of genes. Moreover, Ingenuity Pathways Analysis (IPA) suggests that the three lineages differ in the ability to manipulate their host; e.g., they employ different strategies to avoid, deflect, or subvert host defense mechanisms. These observed differences may explain some of the variation in the neurobiological effects of different strains of Toxoplasma on infected individuals.
Collapse
|
18
|
Paibomesai MI, Moghadam HK, Ferguson MM, Danzmann RG. Clock genes and their genomic distributions in three species of salmonid fishes: Associations with genes regulating sexual maturation and cell cycling. BMC Res Notes 2010; 3:215. [PMID: 20670436 PMCID: PMC3161366 DOI: 10.1186/1756-0500-3-215] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Accepted: 07/29/2010] [Indexed: 12/12/2022] Open
Abstract
Background Clock family genes encode transcription factors that regulate clock-controlled genes and thus regulate many physiological mechanisms/processes in a circadian fashion. Clock1 duplicates and copies of Clock3 and NPAS2-like genes were partially characterized (genomic sequencing) and mapped using family-based indels/SNPs in rainbow trout (RT)(Oncorhynchus mykiss), Arctic charr (AC)(Salvelinus alpinus), and Atlantic salmon (AS)(Salmo salar) mapping panels. Results Clock1 duplicates mapped to linkage groups RT-8/-24, AC-16/-13 and AS-2/-18. Clock3/NPAS2-like genes mapped to RT-9/-20, AC-20/-43, and AS-5. Most of these linkage group regions containing the Clock gene duplicates were derived from the most recent 4R whole genome duplication event specific to the salmonids. These linkage groups contain quantitative trait loci (QTL) for life history and growth traits (i.e., reproduction and cell cycling). Comparative synteny analyses with other model teleost species reveal a high degree of conservation for genes in these chromosomal regions suggesting that functionally related or co-regulated genes are clustered in syntenic blocks. For example, anti-müllerian hormone (amh), regulating sexual maturation, and ornithine decarboxylase antizymes (oaz1 and oaz2), regulating cell cycling, are contained within these syntenic blocks. Conclusions Synteny analyses indicate that regions homologous to major life-history QTL regions in salmonids contain many candidate genes that are likely to influence reproduction and cell cycling. The order of these genes is highly conserved across the vertebrate species examined, and as such, these genes may make up a functional cluster of genes that are likely co-regulated. CLOCK, as a transcription factor, is found within this block and therefore has the potential to cis-regulate the processes influenced by these genes. Additionally, clock-controlled genes (CCGs) are located in other life-history QTL regions within salmonids suggesting that at least in part, trans-regulation of these QTL regions may also occur via Clock expression.
Collapse
Affiliation(s)
- Marion I Paibomesai
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.
| | | | | | | |
Collapse
|