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Nayak R, Franěk R, Šindelka R, Pšenička M. Enhancement of zebrafish sperm production via a large body-sized surrogate with germ cell transplantation. Commun Biol 2023; 6:412. [PMID: 37059808 PMCID: PMC10104805 DOI: 10.1038/s42003-023-04800-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 04/03/2023] [Indexed: 04/16/2023] Open
Abstract
Zebrafish (Danio rerio) is a commonly-used vertebrate model species for many research areas. However, its low milt volume limits effective cryopreservation of sperm from a single individual and often precludes dividing a single semen sample to conduct multiple downstream procedures such as genomic DNA/RNA extraction and in-vitro fertilization. Here, we apply germ stem cell transplantation to increase zebrafish sperm production in a closely related larger species from the same subfamily, giant danio Devario aequipinnatus. The endogenous germ cell of the host is depleted by dead-end morpholino antisense oligonucleotide. Histology of the sterile gonad and quantitative PCR of gonadal tissue reveals all sterile giant danio develop the male phenotype. Spermatogonial cells of Tg(ddx4:egfp) transgenic zebrafish are transplanted into sterile giant danio larvae, and 22% of recipients (germline chimera) produce donor-derived sperm at sexual maturation. The germline chimera produce approximately three-fold the volume of sperm and 10-fold the spermatozoon concentration of the donor. The donor-derived sperm is functional and gives rise to viable progeny upon fertilization of donor oocytes. We show that the issue of low milt volume can be effectively addressed by employing a larger surrogate parent.
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Affiliation(s)
- Rigolin Nayak
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czech Republic.
| | - Roman Franěk
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czech Republic
- Department of Genetics, The Silberman Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Radek Šindelka
- Laboratory of Gene Expression, Institute of Biotechnology, BIOCEV, Vestec, Czech Republic
| | - Martin Pšenička
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czech Republic
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2
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Wang J, Chen G, Yu X, Zhou X, Zhang Y, Wu Y, Tong J. Transcriptome analyses reveal differentially expressed genes associated with development of the palatal organ in bighead carp (Hypophthalmichthys nobilis). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY PART D: GENOMICS AND PROTEOMICS 2023; 46:101072. [PMID: 36990038 DOI: 10.1016/j.cbd.2023.101072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/12/2023] [Accepted: 03/11/2023] [Indexed: 03/28/2023]
Abstract
The palatal organ is a filter-feeding related organ and occupies a considerable proportion of the head of bighead carp (Hypophthalmichthys nobilis), a large cyprinid fish intensive aquaculture in Asia. In this study, we performed RNA-seq of the palatal organ during growth periods of two (M2), six (M6) and 15 (M15) months of age after hatching. The numbers of differentially expressed genes (DEGs) were 1384, 481 and 1837 for M2 VS M6, M6 VS M15 and M2 VS M15 respectively. The following signaling pathways of energy metabolism and cytoskeleton function were enriched, including ECM-receptor interaction, Cardiac muscle contraction, Steroid biosynthesis and PPAR signaling pathway. Several members of collagen family (col1a1, col2a1, col6a2, col6a3, col9a2), Laminin gamma 1 (lamc1), integrin alpha 1 (itga1), Fatty acid binding protein 2 (fads2) and lipoprotein lipase (lpl), and Protein tyrosine kinase 7 (Ptk7) are candidate genes for growth and development of basic tissues of the palatal organ. Furthermore, taste-related genes such as fgfrl1, fgf8a, fsta and notch1a were also identified, which may be involved in the development of taste buds of the palatal organ. The transcriptome data obtained in this study provide insights into the understanding functions and development mechanisms of palatal organ, and potential candidate genes that may be related to the genetic modulation of head size of bighead carp.
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Affiliation(s)
- Junru Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Geng Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xiaomu Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xiaoyu Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yifan Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yanhong Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingou Tong
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China; Hubei Hongshan Laboratory, Wuhan 430070, China.
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3
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Age-associated changes in gene expression in the anterior pituitary glands of female Japanese black cattle. Mamm Genome 2022; 33:606-618. [PMID: 35838775 DOI: 10.1007/s00335-022-09958-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 06/14/2022] [Indexed: 10/17/2022]
Abstract
Proper functioning of the anterior pituitary (AP) gland is imperative, however, is suppressed by aging via unclear mechanisms. Therefore, we identified differentially expressed genes (DEGs) in the AP glands of Japanese Black young heifers (approximately 22 months old) compared to old cows (approximately 120 months old) via deep sequencing of the transcriptome (RNA-seq) to characterize potentially important pathways. The young and old AP glands expressed 20,171 annotated genes. Of the total transcripts per million, approximately 41.6% and 35.5% were the sum of seven AP hormone genes in young and old AP glands, respectively, with difference observed in the sum between the young and old AP glands (P < 0.05). Moreover, we identified 48 downregulated genes and 218 upregulated genes in old compared to young AP glands (P < 0.01, fold change > 120%). The DEGs included 1 cytokine (AIMP1), 3 growth factors (NRG2, PTN, and TGFB1), 1 receptor-associated protein gene (AGTRAP), and 10 receptor genes, including PRLHR and two orphan G-protein-coupled receptors (GPR156 and GPR176). Metascape analysis of the DEGs revealed "Peptide metabolic process," "Regulation of hormone levels," and "Peptide hormone processing" as enriched pathways. Furthermore, Ingenuity Pathway analysis of the DEGs revealed (1) a network of 24 genes (including GPR156 and PRLHR) named "Neurological disease, organismal injury and abnormalities, and psychological disorders", and (2) two canonical pathways (P < 0.01), namely "Huntington's disease signaling", and "AMPK signaling". Thus, the findings of the current study revealed relevant DEGs, while identifying important pathways that occur during aging in AP glands of female cattle.
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Crespo D, Skaftnesmo KO, Kjærner-Semb E, Yilmaz O, Norberg B, Olausson S, Vogelsang P, Bogerd J, Kleppe L, Edvardsen RB, Andersson E, Wargelius A, Hansen TJ, Fjelldal PG, Schulz RW. Pituitary Gonadotropin Gene Expression During Induced Onset of Postsmolt Maturation in Male Atlantic Salmon: In Vivo and Tissue Culture Studies. Front Endocrinol (Lausanne) 2022; 13:826920. [PMID: 35370944 PMCID: PMC8964956 DOI: 10.3389/fendo.2022.826920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/17/2022] [Indexed: 12/25/2022] Open
Abstract
Precocious male maturation causes reduced welfare and increased production costs in Atlantic salmon (Salmo salar) aquaculture. The pituitary produces and releases follicle-stimulating hormone (Fsh), the gonadotropin triggering puberty in male salmonids. However, little is known about how Fsh production is regulated in Atlantic salmon. We examined, in vivo and ex vivo, transcriptional changes of gonadotropin-related genes accompanying the initial steps of testis maturation, in pituitaries of males exposed to photoperiod and temperature conditions promoting maturation (constant light and 16°C). Pituitary fshb, lhb and gnrhr2bba transcripts increased in vivo in maturing males (gonado-somatic index > 0.1%). RNA sequencing (RNAseq) analysis using pituitaries from genetically similar males carrying the same genetic predisposition to mature, but differing by responding or not responding to stimulatory environmental conditions, revealed 144 differentially expressed genes, ~2/3rds being up-regulated in responders, including fshb and other pituitary hormones, steroid-related and other puberty-associated transcripts. Functional enrichment analyses confirmed gene involvement in hormone/steroid production and gonad development. In ex vivo studies, whole pituitaries were exposed to a selection of hormones and growth factors. Gonadotropin-releasing hormone (Gnrh), 17β-estradiol (E2) and 11-ketotestosterone (11-KT) up-regulated gnrhr2bba and lhb, while fshb was up-regulated by Gnrh but down-regulated by 11-KT in pituitaries from immature males. Also pituitaries from maturing males responded to Gnrh and sex steroids by increased gnrhr2bba and lhb transcript levels, but fshb expression remained unchanged. Growth factors (inhibin A, activin A and insulin-like growth factor 1) did not change gnrhr2bba, lhb or fshb transcript levels in pituitaries either from immature or maturing males. Additional pituitary ex vivo studies on candidates identified by RNAseq showed that these transcripts were preferentially regulated by Gnrh and sex steroids, but not by growth factors, and that Gnrh/sex steroids were less effective when incubating pituitaries from maturing males. Our results suggest that a yet to be characterized mechanism up-regulating fshb expression in the salmon pituitary is activated in response to stimulatory environmental conditions prior to morphological signs of testis maturation, and that the transcriptional program associated with this mechanism becomes unresponsive or less responsive to most stimulators ex vivo once males had entered pubertal developmental in vivo.
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Affiliation(s)
- Diego Crespo
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
- *Correspondence: Diego Crespo,
| | - Kai Ove Skaftnesmo
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
| | - Erik Kjærner-Semb
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
| | - Ozlem Yilmaz
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Austevoll Research Station, Storebø, Norway
| | - Birgitta Norberg
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Austevoll Research Station, Storebø, Norway
| | - Sara Olausson
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Austevoll Research Station, Storebø, Norway
| | - Petra Vogelsang
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
| | - Jan Bogerd
- Reproductive Biology Group, Division Developmental Biology, Department Biology, Science Faculty, Utrecht University, Utrecht, Netherlands
| | - Lene Kleppe
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
| | - Rolf B. Edvardsen
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
| | - Eva Andersson
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
| | - Anna Wargelius
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
| | - Tom J. Hansen
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Matre Research Station, Matredal, Norway
| | - Per Gunnar Fjelldal
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Matre Research Station, Matredal, Norway
| | - Rüdiger W. Schulz
- Research Group Reproduction and Developmental Biology, Institute of Marine Research, Bergen, Norway
- Reproductive Biology Group, Division Developmental Biology, Department Biology, Science Faculty, Utrecht University, Utrecht, Netherlands
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5
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Characterization of hormone-producing cell types in the teleost pituitary gland using single-cell RNA-seq. Sci Data 2021; 8:279. [PMID: 34711832 PMCID: PMC8553774 DOI: 10.1038/s41597-021-01058-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 09/09/2021] [Indexed: 11/08/2022] Open
Abstract
The pituitary is the vertebrate endocrine gland responsible for the production and secretion of several essential peptide hormones. These, in turn, control many aspects of an animal’s physiology and development, including growth, reproduction, homeostasis, metabolism, and stress responses. In teleost fish, each hormone is presumably produced by a specific cell type. However, key details on the regulation of, and communication between these cell types remain to be resolved. We have therefore used single-cell sequencing to generate gene expression profiles for 2592 and 3804 individual cells from the pituitaries of female and male adult medaka (Oryzias latipes), respectively. Based on expression profile clustering, we define 15 and 16 distinct cell types in the female and male pituitary, respectively, of which ten are involved in the production of a single peptide hormone. Collectively, our data provide a high-quality reference for studies on pituitary biology and the regulation of hormone production, both in fish and in vertebrates in general. Measurement(s) | RNA-seq gene expression profiling assay | Technology Type(s) | tag based single cell RNA sequencing | Factor Type(s) | sex | Sample Characteristic - Organism | Oryzias latipes | Sample Characteristic - Environment | fresh water aquarium |
Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.16592621
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Royan MR, Siddique K, Csucs G, Puchades MA, Nourizadeh-Lillabadi R, Bjaalie JG, Henkel CV, Weltzien FA, Fontaine R. 3D Atlas of the Pituitary Gland of the Model Fish Medaka ( Oryzias latipes). Front Endocrinol (Lausanne) 2021; 12:719843. [PMID: 34497587 PMCID: PMC8419251 DOI: 10.3389/fendo.2021.719843] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 07/12/2021] [Indexed: 12/23/2022] Open
Abstract
In vertebrates, the anterior pituitary plays a crucial role in regulating several essential physiological processes via the secretion of at least seven peptide hormones by different endocrine cell types. Comparative and comprehensive knowledge of the spatial distribution of those endocrine cell types is required to better understand their physiological functions. Using medaka as a model and several combinations of multi-color fluorescence in situ hybridization, we present the first 3D atlas revealing the gland-wide distribution of seven endocrine cell populations: lactotropes, thyrotropes, Lh and Fsh gonadotropes, somatotropes, and pomca-expressing cells (corticotropes and melanotropes) in the anterior pituitary of a teleost fish. By combining in situ hybridization and immunofluorescence techniques, we deciphered the location of corticotropes and melanotropes within the pomca-expressing cell population. The 3D localization approach reveals sexual dimorphism of tshba-, pomca-, and lhb-expressing cells in the adult medaka pituitary. Finally, we show the existence of bi-hormonal cells co-expressing lhb-fshb, fshb-tshba and lhb-sl using single-cell transcriptomics analysis and in situ hybridization. This study offers a solid basis for future comparative studies of the teleost pituitary and its functional plasticity.
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Affiliation(s)
- Muhammad Rahmad Royan
- Physiology Unit, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
| | - Khadeeja Siddique
- Physiology Unit, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
| | - Gergely Csucs
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Maja A. Puchades
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | | | - Jan G. Bjaalie
- Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Christiaan V. Henkel
- Physiology Unit, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
| | - Finn-Arne Weltzien
- Physiology Unit, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
| | - Romain Fontaine
- Physiology Unit, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
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7
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Li X, Li C, Wureli H, Ni W, Zhang M, Li H, Xu Y, Rizabek K, Bolatkhan M, Askar D, Gulzhan K, Hou X, Hu S. Screening and evaluating of long non-coding RNAs in prenatal and postnatal pituitary gland of sheep. Genomics 2019; 112:934-942. [PMID: 31200027 DOI: 10.1016/j.ygeno.2019.06.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 06/07/2019] [Accepted: 06/10/2019] [Indexed: 12/18/2022]
Abstract
Long non-coding RNAs are transcribed into RNA molecules that are >200 nucleotides in length. However, the expression and function analysis of lncRNAs in the sheep pituitary gland are still lacking. In this study, we identified 1755 lncRNAs (545 annotated lncRNAs and 1210 novel lncRNAs) from RNA-seq data in the pituitary gland of embryonic and adult sheep. A total of 235 lncRNAs were differentially expressed between embryonic and adult group. We verified the presence of some lncRNAs using RT-PCR and DNA sequencing, and identified some differentially expressed lncRNAs using qPCR. We also investigated the role of cis-acting lncRNAs on target genes. GO and KEGG enrichment analysis revealed that the target genes of lncRNAs were involved in the regulation of hormones secretion and some signaling pathways in the sheep pituitary gland. Our study provides comprehensive expression profiles of lncRNAs and valuable resource for understanding their function in the pituitary gland.
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Affiliation(s)
- Xiaoyue Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Cunyuan Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China; College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Hazi Wureli
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Wei Ni
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China.
| | - Mengdan Zhang
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Huixiang Li
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Yueren Xu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Kadyken Rizabek
- Department of Food Engineering, Kazakh National Agrarian University, Almaty Province 050010, Kazakhstan
| | - Makhatov Bolatkhan
- Department of Technology and Biological Resources, Kazakh National Agrarian University, Almaty Province 050010, Kazakhstan
| | - Dzhunysov Askar
- Department of Technology and Biological Resources, Kazakh National Agrarian University, Almaty Province 050010, Kazakhstan
| | - Kulmanova Gulzhan
- Department of Technology and Biological Resources, Kazakh National Agrarian University, Almaty Province 050010, Kazakhstan
| | - Xiaoxu Hou
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Shengwei Hu
- College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, China.
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Abstract
Proopiomelanocortin (POMC) belongs to the opioid/orphanin gene family whose peptide precursors include either opioid (YGGF) or the orphanin/nociceptin core sequences (FGGF). In addition to POMC the family includes the proenkephalin (PENK), prodynorphin (PDYN), and nociceptin/proorphanin (PNOC) precursors. The opioid core sequence in POMC is incorporated by the β-endorphin that occupies the C-terminal region but this propeptide also exhibits at least two "alien" melanocortin core sequences (HFRW). An ACTH/MSH fragment merged into the opioid fragment not earlier than the two tetraploidizations of the vertebrate genome. Therefore, POMC exhibit a complex "evolutionary life" since the gene has coevolved together with two different receptor systems, i.e., opioid and melanocortin following a horse trading system. In this article, we summarize the different evolutionary hypotheses proposed for POMC evolution.
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Affiliation(s)
- Ana Rocha
- Department of Fish Physiology and Biotechnology, Institute of Aquaculture from Torre la Sal (IATS-CSIC), Castellon, Spain
| | - Alejandra Godino-Gimeno
- Department of Fish Physiology and Biotechnology, Institute of Aquaculture from Torre la Sal (IATS-CSIC), Castellon, Spain
| | - José Miguel Cerdá-Reverter
- Department of Fish Physiology and Biotechnology, Institute of Aquaculture from Torre la Sal (IATS-CSIC), Castellon, Spain..
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9
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Schenk S, Bannister SC, Sedlazeck FJ, Anrather D, Minh BQ, Bileck A, Hartl M, von Haeseler A, Gerner C, Raible F, Tessmar-Raible K. Combined transcriptome and proteome profiling reveals specific molecular brain signatures for sex, maturation and circalunar clock phase. eLife 2019; 8:e41556. [PMID: 30767890 PMCID: PMC6377233 DOI: 10.7554/elife.41556] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 01/15/2019] [Indexed: 12/15/2022] Open
Abstract
Many marine animals, ranging from corals to fishes, synchronise reproduction to lunar cycles. In the annelid Platynereis dumerilii, this timing is orchestrated by an endogenous monthly (circalunar) clock entrained by moonlight. Whereas daily (circadian) clocks cause extensive transcriptomic and proteomic changes, the quality and quantity of regulations by circalunar clocks have remained largely elusive. By establishing a combined transcriptomic and proteomic profiling approach, we provide first systematic insight into the molecular changes in Platynereis heads between circalunar phases, and across sexual differentiation and maturation. Whereas maturation elicits large transcriptomic and proteomic changes, the circalunar clock exhibits only minor transcriptomic, but strong proteomic regulation. Our study provides a versatile extraction technique and comprehensive resources. It corroborates that circadian and circalunar clock effects are likely distinct and identifies key molecular brain signatures for reproduction, sex and circalunar clock phase. Examples include prepro-whitnin/proctolin and ependymin-related proteins as circalunar clock targets.
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Affiliation(s)
- Sven Schenk
- Max F Perutz Laboratories, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform 'Rhythms of Life', University of Vienna, Vienna BioCenter, Vienna, Austria
| | - Stephanie C Bannister
- Max F Perutz Laboratories, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform 'Rhythms of Life', University of Vienna, Vienna BioCenter, Vienna, Austria
| | - Fritz J Sedlazeck
- Center of Integrative Bioinformatics Vienna, Max F Perutz Laboratories, University of Vienna, Medical University of Vienna, Vienna BioCenter, Vienna, Austria
| | - Dorothea Anrather
- Max F Perutz Laboratories, University of Vienna, Vienna BioCenter, Vienna, Austria
- Mass Spectrometry Facility, Max F Perutz Laboratories, Vienna, Austria
| | - Bui Quang Minh
- Center of Integrative Bioinformatics Vienna, Max F Perutz Laboratories, University of Vienna, Medical University of Vienna, Vienna BioCenter, Vienna, Austria
| | - Andrea Bileck
- Research Platform 'Rhythms of Life', University of Vienna, Vienna BioCenter, Vienna, Austria
- Department of Analytical Chemistry, University of Vienna, Vienna, Austria
| | - Markus Hartl
- Max F Perutz Laboratories, University of Vienna, Vienna BioCenter, Vienna, Austria
- Mass Spectrometry Facility, Max F Perutz Laboratories, Vienna, Austria
| | - Arndt von Haeseler
- Research Platform 'Rhythms of Life', University of Vienna, Vienna BioCenter, Vienna, Austria
- Center of Integrative Bioinformatics Vienna, Max F Perutz Laboratories, University of Vienna, Medical University of Vienna, Vienna BioCenter, Vienna, Austria
- Bioinformatics and Computational Biology, Faculty of Computer Science, University of Vienna, Vienna, Austria
| | - Christopher Gerner
- Research Platform 'Rhythms of Life', University of Vienna, Vienna BioCenter, Vienna, Austria
- Department of Analytical Chemistry, University of Vienna, Vienna, Austria
| | - Florian Raible
- Max F Perutz Laboratories, University of Vienna, Vienna BioCenter, Vienna, Austria
- Research Platform 'Rhythms of Life', University of Vienna, Vienna BioCenter, Vienna, Austria
| | - Kristin Tessmar-Raible
- Research Platform 'Rhythms of Life', University of Vienna, Vienna BioCenter, Vienna, Austria
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10
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De Groef B, Grommen SVH, Darras VM. Forever young: Endocrinology of paedomorphosis in the Mexican axolotl (Ambystoma mexicanum). Gen Comp Endocrinol 2018; 266:194-201. [PMID: 29777689 DOI: 10.1016/j.ygcen.2018.05.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/09/2018] [Accepted: 05/14/2018] [Indexed: 02/07/2023]
Abstract
The Mexican axolotl (Ambystoma mexicanum) is a salamander species that does not undergo metamorphosis, resulting in the retention of juvenile characteristics in the mature breeding stage (paedomorphosis). Here we review the endocrinological studies investigating the proximate cause of axolotl paedomorphosis with a focus on the hypothalamo-pituitary-thyroid (HPT) axis. It is well established that axolotl paedomorphosis is a consequence of low activity of the HPT axis. The pituitary hormone thyrotropin (TSH) is capable of inducing metamorphosis in the axolotl, which indicates that all processes and interactions in the HPT axis below the pituitary level are functional, but that TSH release is impaired. In metamorphosing species, TSH secretion is largely controlled by the hypothalamic neuropeptide corticotropin-releasing hormone (CRH), which seems to have lost its thyrotropic activity in the axolotl. However, preliminary experiments have not yet confirmed a role for faulty CRH signalling in axolotl paedomorphosis. Other hypothalamic factors and potential pituitary inhibitors need to be investigated to identify their roles in amphibian metamorphosis and axolotl paedomorphosis.
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Affiliation(s)
- Bert De Groef
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria 3086, Australia.
| | - Sylvia V H Grommen
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria 3086, Australia.
| | - Veerle M Darras
- Laboratory of Comparative Endocrinology, Department of Biology, KU Leuven, B3000 Leuven, Belgium.
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Pandey K, Mizukami Y, Watanabe K, Sakaguti S, Kadokawa H. Deep sequencing of the transcriptome in the anterior pituitary of heifers before and after ovulation. J Vet Med Sci 2017; 79:1003-1012. [PMID: 28442638 PMCID: PMC5487774 DOI: 10.1292/jvms.16-0531] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We aimed to determine gene expression patterns in the anterior pituitary (AP) of heifers
before and after ovulation via deep sequencing of the transcriptome (RNA-seq) to identify
new genes and clarify important pathways. Heifers were slaughtered on the estrus day
(pre-ovulation; n=5) or 3 days after ovulation (post-ovulation; n=5) for AP collection. We
randomly selected 4 pre-ovulation and 4 post-ovulation APs, and the ribosomal RNA-depleted
poly (A)+RNA were prepared to assemble next-generation sequencing libraries. The bovine
APs expressed 12,769 annotated genes at pre- or post-ovulation. The sum of the reads per
kilobase of exon model per million mapped reads (RPKM) values of all transcriptomes were
599,676 ± 38,913 and 668,209 ± 23,690, and 32.2 ± 2.6% and 44.0 ± 4.4% of these
corresponded to the AP hormones in the APs of pre- and post-ovulation heifers,
respectively. The bovine AP showed differential expression of 396 genes
(P<0.05) in the pre- and post-ovulation APs. The 396 genes included
two G-protein-coupled receptor (GPCR) genes (GPR61 and
GPR153) and those encoding 13 binding proteins. The AP also expressed
259 receptor and other 364 binding proteins. Moreover, ingenuity pathway analysis for the
396 genes revealed (P=2.4 × 10−3) a canonical pathway linking
GPCR to cytoskeleton reorganization, actin polymerization, microtubule growth, and gene
expression. Thus, the present study clarified the novel genes found to be differentially
expressed before and after ovulation and clarified an important pathway in the AP.
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Affiliation(s)
- Kiran Pandey
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yoshida 1677-1, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Yoichi Mizukami
- Center for Gene Research, Yamaguchi University, Minami Kogushi 1-1-1, Ube-shi, Yamaguchi 755-8505, Japan
| | - Kenji Watanabe
- Center for Gene Research, Yamaguchi University, Minami Kogushi 1-1-1, Ube-shi, Yamaguchi 755-8505, Japan
| | - Syuiti Sakaguti
- Institute of Radioisotope Research and Education, Yamaguchi University, Minami Kogushi 1-1-1, Ube-shi, Yamaguchi 755-8505, Japan
| | - Hiroya Kadokawa
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yoshida 1677-1, Yamaguchi-shi, Yamaguchi 753-8515, Japan
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12
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Shainer I, Buchshtab A, Hawkins TA, Wilson SW, Cone RD, Gothilf Y. Novel hypophysiotropic AgRP2 neurons and pineal cells revealed by BAC transgenesis in zebrafish. Sci Rep 2017; 7:44777. [PMID: 28317906 PMCID: PMC5357965 DOI: 10.1038/srep44777] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 02/13/2017] [Indexed: 11/21/2022] Open
Abstract
The neuropeptide agouti-related protein (AgRP) is expressed in the arcuate nucleus of the mammalian hypothalamus and plays a key role in regulating food consumption and energy homeostasis. Fish express two agrp genes in the brain: agrp1, considered functionally homologous with the mammalian AgRP, and agrp2. The role of agrp2 and its relationship to agrp1 are not fully understood. Utilizing BAC transgenesis, we generated transgenic zebrafish in which agrp1- and agrp2-expressing cells can be visualized and manipulated. By characterizing these transgenic lines, we showed that agrp1-expressing neurons are located in the ventral periventricular hypothalamus (the equivalent of the mammalian arcuate nucleus), projecting throughout the hypothalamus and towards the preoptic area. The agrp2 gene was expressed in the pineal gland in a previously uncharacterized subgroup of cells. Additionally, agrp2 was expressed in a small group of neurons in the preoptic area that project directly towards the pituitary and form an interface with the pituitary vasculature, suggesting that preoptic AgRP2 neurons are hypophysiotropic. We showed that direct synaptic connection can exist between AgRP1 and AgRP2 neurons in the hypothalamus, suggesting communication and coordination between AgRP1 and AgRP2 neurons and, therefore, probably also between the processes they regulate.
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Affiliation(s)
- Inbal Shainer
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
| | - Adi Buchshtab
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
| | - Thomas A. Hawkins
- The Department of Cell and Developmental Biology, Faculty of Life Sciences, University College London, London, UK
| | - Stephen W. Wilson
- The Department of Cell and Developmental Biology, Faculty of Life Sciences, University College London, London, UK
| | - Roger D. Cone
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, USA
| | - Yoav Gothilf
- Department of Neurobiology, George S. Wise Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
- Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
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13
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Golan M, Martin AO, Mollard P, Levavi-Sivan B. Anatomical and functional gonadotrope networks in the teleost pituitary. Sci Rep 2016; 6:23777. [PMID: 27029812 PMCID: PMC4815020 DOI: 10.1038/srep23777] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 03/08/2016] [Indexed: 12/28/2022] Open
Abstract
Mammalian pituitaries exhibit a high degree of intercellular coordination; this enables them to mount large-scale coordinated responses to various physiological stimuli. This type of communication has not been adequately demonstrated in teleost pituitaries, which exhibit direct hypothalamic innervation and expression of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in distinct cell types. We found that in two fish species, namely tilapia and zebrafish, LH cells exhibit close cell-cell contacts and form a continuous network throughout the gland. FSH cells were more loosely distributed but maintained some degree of cell-cell contact by virtue of cytoplasmic processes. These anatomical differences also manifest themselves at the functional level as evidenced by the effect of gap-junction uncouplers on gonadotropin release. These substances abolished the LH response to gonadotropin-releasing hormone stimulation but did not affect the FSH response to the same stimuli. Dye transfer between neighboring LH cells provides further evidence for functional coupling. The two gonadotropins were also found to be differently packaged within their corresponding cell types. Our findings highlight the evolutionary origin of pituitary cell networks and demonstrate how the different levels of cell-cell coordination within the LH and FSH cell populations are reflected in their distinct secretion patterns.
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Affiliation(s)
- Matan Golan
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, F-34000 Montpellier, France
- INSERM, U661, F-34000 Montpellier, France
- Universités de Montpellier 1 & 2, UMR-5203, F-34000 Montpellier, France
| | - Agnés O. Martin
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, F-34000 Montpellier, France
- INSERM, U661, F-34000 Montpellier, France
- Universités de Montpellier 1 & 2, UMR-5203, F-34000 Montpellier, France
| | - Patrice Mollard
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, F-34000 Montpellier, France
- INSERM, U661, F-34000 Montpellier, France
- Universités de Montpellier 1 & 2, UMR-5203, F-34000 Montpellier, France
| | - Berta Levavi-Sivan
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
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14
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Dai Z, Wang H, Jin X, Wang H, He J, Liu M, Yin Z, Sun Y, Lou Q. Depletion of suppressor of cytokine signaling-1a causes hepatic steatosis and insulin resistance in zebrafish. Am J Physiol Endocrinol Metab 2015; 308:E849-59. [PMID: 25759395 DOI: 10.1152/ajpendo.00540.2014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 03/02/2015] [Indexed: 02/08/2023]
Abstract
Suppressor of cytokine signaling-1a (SOCS1a) is a member of the suppressor of cytokine signaling family, a group of related molecules that mediate the negative regulation of the JAK-STAT pathway. Here, we depleted SOCS1a using the transcription activator-like (TAL) effector nuclease (TALEN) technique to understand its physiological roles in zebrafish. Although elevated levels of JAK-STAT5 activation and erythropoiesis have been observed in socs1a-deficient zebrafish, these animals exhibited normal growth during the early stages. Socs1a-deficient zebrafish began to grow slowly with certain mortalities after 20 days postfertilization (dpf), whereas the heterozygous socs1a-deficient zebrafish exhibited enhanced somatic growth. Decreased adiposity, hepatic steatosis, and insulin resistance were observed in our socs1a-deficient adult zebrafish, which is similar to the lipodystrophy phenotypes observed in mammals. Comparative transcriptomic analyses revealed elevated levels of gluconeogenesis, lipolysis, and hypoxia-inducible response and decreased activities of lipogenesis and glycolysis in the hepatocytes of socs1a-deflicient adult zebrafish. Evident mitochondrial dysfunction has also been observed in hepatocytes from socs1a-deficient zebrafish. Taken together, our results suggest that the negative regulatory roles of SOCS1a on JAK-STAT5 signaling may be involved in the suppression of the erythropoiesis and growth hormone activities, which was also reflected in the enhanced somatic growth performance observed in the heterozygous socs1a-deficient fish. The differences in the effects caused by SOCS1a depletion on insulin sensitivity, lipid metabolism, and inflammatory responses between zebrafish and mammalian models observed here may reflect differences between the functional mechanisms of SOCS members in terrestrial mammals and aquatic teleosts.
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Affiliation(s)
- Ziru Dai
- Key Laboratory of Molecular Biophysics, Ministry of Education, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei, China; Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China; and
| | - Hualin Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Wuhan, Hubei, China
| | - Xia Jin
- Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China; and
| | - Houpeng Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Wuhan, Hubei, China
| | - Jiangyan He
- Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China; and
| | - Mugen Liu
- Key Laboratory of Molecular Biophysics, Ministry of Education, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhan Yin
- Key Laboratory of Molecular Biophysics, Ministry of Education, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei, China; Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China; and
| | - Yonghua Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Wuhan, Hubei, China
| | - Qiyong Lou
- Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China; and
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15
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Neuroendocrine regulation of somatic growth in fishes. SCIENCE CHINA-LIFE SCIENCES 2015; 58:137-47. [DOI: 10.1007/s11427-015-4805-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 09/19/2014] [Indexed: 10/24/2022]
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