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Abramov T, Suwansa-ard S, da Silva PM, Wang T, Dove M, O’Connor W, Parker L, Russell FD, Lovejoy DA, Cummins SF, Elizur A. A novel role for Teneurin C-terminal Associated Peptide (TCAP) in the regulation of cardiac activity in the Sydney rock oyster, Saccostrea glomerata. Front Endocrinol (Lausanne) 2023; 14:1020368. [PMID: 36814576 PMCID: PMC9939839 DOI: 10.3389/fendo.2023.1020368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/23/2023] [Indexed: 02/08/2023] Open
Abstract
Teneurin C-terminal associated peptide (TCAP) is an ancient bioactive peptide that is highly conserved in metazoans. TCAP administration reduces cellular and behavioural stress in vertebrate and urochordate models, yet despite numerous studies in higher animals, there is limited knowledge of its role in invertebrates. In particular, there are no studies on TCAP's effects on the heart of any metazoan, which is a critical organ in the stress response. We used the Sydney rock oyster (SRO) as an invertebrate model to investigate a potential role for sroTCAP in regulating cardiac activity, including during stress. sroTCAP is localized to the neural innervation network of the SRO heart, and suggested binding with various heart proteins related to metabolism and stress, including SOD, GAPDH and metabotropic glutamate receptor. Intramuscular injection of sroTCAP (10 pmol) significantly altered the expression of heart genes that are known to regulate remodelling processes under different conditions, and modulated several gene families responsible for stress mitigation. sroTCAP (1 and 10 pmol) was shown to cause transient bradycardia (heart rate was reduced by up to 63% and for up to 40 min post-administration), indicative of an unstressed state. In summary, this study has established a role for a TCAP in the regulation of cardiac activity through modulation of physiological and molecular components associated with energy conservation, stress and adaptation. This represents a novel function for TCAP and may have implications for higher-order metazoans.
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Affiliation(s)
- Tomer Abramov
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Saowaros Suwansa-ard
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Patricia Mirella da Silva
- Invertebrate Immunology and Pathology Laboratory, Department of Molecular Biology, Federal University of Paraíba, João Pessoa, Brazil
| | - Tianfang Wang
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Michael Dove
- New South Wales (NSW) Department of Primary Industries, Port Stephens Fisheries Institute Taylors Beach, Port Stephens NSW, Australia
| | - Wayne O’Connor
- New South Wales (NSW) Department of Primary Industries, Port Stephens Fisheries Institute Taylors Beach, Port Stephens NSW, Australia
| | - Laura Parker
- School of Biological, Earth and Environmental Sciences, The University of New South Wales, Kensington, NSW, Australia
| | - Fraser D. Russell
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Health and Behavioural Sciences, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - David A. Lovejoy
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Scott F. Cummins
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Abigail Elizur
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- *Correspondence: Abigail Elizur,
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Hogg DW, Casatti CC, Belsham DD, Baršytė-Lovejoy D, Lovejoy DA. Distal extracellular teneurin region (teneurin C-terminal associated peptide; TCAP) possesses independent intracellular calcium regulating actions, in vitro: A potential antagonist of corticotropin-releasing factor (CRF). Biochem Biophys Rep 2022; 32:101397. [DOI: 10.1016/j.bbrep.2022.101397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
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3
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Abramov T, Suwansa-ard S, da Silva PM, Wang T, Dove M, O’Connor W, Parker L, Lovejoy DA, Cummins SF, Elizur A. Teneurin and TCAP Phylogeny and Physiology: Molecular Analysis, Immune Activity, and Transcriptomic Analysis of the Stress Response in the Sydney Rock Oyster ( Saccostrea glomerata) Hemocytes. Front Endocrinol (Lausanne) 2022; 13:891714. [PMID: 35784537 PMCID: PMC9248207 DOI: 10.3389/fendo.2022.891714] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 03/08/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Teneurin C-terminal associated peptide (TCAP) is an ancient bioactive peptide that is highly conserved in metazoans. TCAP administration reduces cellular and behavioral stress in vertebrate and urochordate models. There is little information for invertebrates regarding the existence or function of a TCAP. This study used the Sydney rock oyster (SRO) as a molluscan model to characterize an invertebrate TCAP, from molecular gene analysis to its physiological effects associated with hemocyte phagocytosis. We report a single teneurin gene (and 4 teneurin splice variants), which encodes a precursor with TCAP that shares a vertebrate-like motif, and is similar to that of other molluscan classes (gastropod, cephalopod), arthropods and echinoderms. TCAP was identified in all SRO tissues using western blotting at 1-2 different molecular weights (~22 kDa and ~37kDa), supporting precursor cleavage variation. In SRO hemolymph, TCAP was spatially localized to the cytosol of hemocytes, and with particularly high density immunoreactivity in granules. Based on 'pull-down' assays, the SRO TCAP binds to GAPDH, suggesting that TCAP may protect cells from apoptosis under oxidative stress. Compared to sham injection, the intramuscular administration of TCAP (5 pmol) into oysters modulated their immune system by significantly reducing hemocyte phagocytosis under stress conditions (low salinity and high temperature). TCAP administration also significantly reduced hemocyte reactive oxygen species production at ambient conditions and after 48 h stress, compared to sham injection. Transcriptomic hemocyte analysis of stressed oysters administered with TCAP demonstrated significant changes in expression of genes associated with key metabolic, protective and immune functions. In summary, this study established a role for TCAP in oysters through modulation of physiological and molecular functions associated with energy conservation, stress and cellular defense.
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Affiliation(s)
- Tomer Abramov
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Saowaros Suwansa-ard
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Patricia Mirella da Silva
- Invertebrate Immunology and Pathology Laboratory, Department of Molecular Biology, Federal University of Paraíba, João Pessoa, Brazil
| | - Tianfang Wang
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Michael Dove
- New South Wales (NSW) Department of Primary Industries, Port Stephens Fisheries Institute, João Pessoa, Para´ıba, Taylors Beach, NSW, Australia
| | - Wayne O’Connor
- New South Wales (NSW) Department of Primary Industries, Port Stephens Fisheries Institute, João Pessoa, Para´ıba, Taylors Beach, NSW, Australia
| | - Laura Parker
- School of Biological, Earth and Environmental Sciences, University of New South Wales, Kensington, NSW, Australia
| | - David A. Lovejoy
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Scott F. Cummins
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Abigail Elizur
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, QLD, Australia
- *Correspondence: Abigail Elizur,
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4
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Viet Nguyen T, Ryan LW, Nocillado J, Le Groumellec M, Elizur A, Ventura T. Transcriptomic changes across vitellogenesis in the black tiger prawn (Penaeus monodon), neuropeptides and G protein-coupled receptors repertoire curation. Gen Comp Endocrinol 2020; 298:113585. [PMID: 32822704 DOI: 10.1016/j.ygcen.2020.113585] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 07/20/2020] [Accepted: 08/08/2020] [Indexed: 12/23/2022]
Abstract
The black tiger prawn (Penaeus monodon) is one of the most commercially important prawn species world-wide, yet there are currently key issues that hinder aquaculture of this species, such as low spawning capacity of captive-reared broodstock females and lack of globally available fully domesticated strains. In this study, we analysed the molecular changes that occur from vitellogenesis to spawning of a fully domesticated population of P.monodon (Madagascar) using four tissues [brain and thoracic ganglia (central nervous system - CNS), eyestalks, antennal gland, and ovary] highlighting differentially expressed genes that could be involved in the sexual maturation. In addition, due to their key role in regulating multiple physiological processes including reproduction, transcripts encoding P.monodon neuropeptides and G protein-coupled receptors (GPCRs) were identified and their expression pattern was assessed. A few neuropeptides and their putative GPCRs which were previously implicated in reproduction are discussed. We identified 573 differentially expressed transcripts between previtellogenic and vitellogenic stages, across the four analysed tissues. Multiple transcripts that have been linked to ovarian maturation were highlighted throughout the study, these include vitellogenin, Wnt, heat shock protein 21, heat shock protein 90, teneurin, Fs(1)M3, hemolymph clottable proteins and some other candidates. Seventy neuropeptide transcripts were also characterized from our de novo assembly. In addition, a hybrid approach that involved clustering and phylogenetics analysis was used to annotate all P. monodon GPCRs, revealing 223 Rhodopsin, 100 Secretin and 27 Metabotropic glutamate GPCRs. Given the key commercial significance of P.monodon and the industry requirements for developing better genomic tools to control reproduction in this species, our findings provide a foundation for future gene-based studies, setting the scene for developing innovative tools for reproduction and/or sexual maturation control in P. monodon.
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Affiliation(s)
- Tuan Viet Nguyen
- GeneCology Research Centre, University of the Sunshine Coast, Sunshine Coast, Queensland, Australia; Agriculture Victoria, AgriBio, Centre for AgriBiosciences, Bundoora, Victoria 3083, Australia
| | - Luke W Ryan
- GeneCology Research Centre, University of the Sunshine Coast, Sunshine Coast, Queensland, Australia
| | - Josephine Nocillado
- GeneCology Research Centre, University of the Sunshine Coast, Sunshine Coast, Queensland, Australia
| | | | - Abigail Elizur
- GeneCology Research Centre, University of the Sunshine Coast, Sunshine Coast, Queensland, Australia.
| | - Tomer Ventura
- GeneCology Research Centre, University of the Sunshine Coast, Sunshine Coast, Queensland, Australia.
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5
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Hogg DW, Husić M, Wosnick D, Dodsworth T, D'Aquila AL, Lovejoy DA. Activity of the Carboxy-Terminal Peptide Region of the Teneurins and Its Role in Neuronal Function and Behavior in Mammals. Front Neurosci 2019; 13:581. [PMID: 31417336 PMCID: PMC6685443 DOI: 10.3389/fnins.2019.00581] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 05/22/2019] [Indexed: 01/08/2023] Open
Abstract
Teneurin C-terminal associated peptides (TCAPs) are an evolutionarily ancient family of 40- to 41-residue bioactive peptides located on the extracellular end of each of the four teneurin transmembrane proteins. TCAP-1 may exist as a tethered peptide at the teneurin-1 carboxy end or as an independent peptide that is either released via post-transcriptional cleavage from its teneurin-1 pro-protein or independently expressed as its own mRNA. In neurons, soluble TCAP-1 acts as a paracrine factor to regulate cellular activity and neuroplastic interactions. In vitro studies indicate that, by itself, synthetic TCAP-1 promotes neuron growth and protects cells from chemical insult. In vivo, TCAP-1 increases hippocampal neuron spine density, reduces stress-induced behavior and ablates cocaine-seeking behaviors. Together, these studies suggest that the physiological effects of TCAP-1 are a result of an inhibition of corticotropin-releasing factor (CRF) activity leading to increased energy production. This hypothesis is supported by in vivo functional positron emissions tomography studies, which demonstrate that TCAP-1 significantly increases glucose uptake in rat brain. Complimentary in vitro studies show that enhanced glucose uptake is the result of TCAP-1-induced insertion of the glucose transporter into the neuronal plasma membrane, leading to increased glucose uptake and ATP production. Interestingly, TCAP-1-mediated glucose uptake occurs through a novel insulin-independent pathway. This review will focus on examining the role of TCAP on neuronal energy metabolism in the central nervous system.
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Affiliation(s)
- David W Hogg
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Mia Husić
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - David Wosnick
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Thomas Dodsworth
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Andrea L D'Aquila
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - David A Lovejoy
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
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6
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Tessarin GWL, Michalec OM, Torres-da-Silva KR, Da Silva AV, Cruz-Rizzolo RJ, Gonçalves A, Gasparini DC, Horta-Júnior JAC, Ervolino E, Bittencourt JC, Lovejoy DA, Casatti CA. A Putative Role of Teneurin-2 and Its Related Proteins in Astrocytes. Front Neurosci 2019; 13:655. [PMID: 31316338 PMCID: PMC6609321 DOI: 10.3389/fnins.2019.00655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 06/07/2019] [Indexed: 11/13/2022] Open
Abstract
Teneurins are type II transmembrane proteins comprised of four phylogenetically conserved homologs (Ten-1-4) that are highly expressed during neurogenesis. An additional bioactive peptide named teneurin C-terminal-associated peptide (TCAP-1-4) is present at the carboxyl terminal of teneurins. The possible correlation between the Ten/TCAP system and brain injuries has not been explored yet. Thus, this study examined the expression of these proteins in the cerebral cortex after mechanical brain injury. Adult rats were subjected to cerebral cortex injury by needle-insertion lesion and sacrificed at various time points. This was followed by analysis of the lesion area by immunohistochemistry and conventional RT-PCR techniques. Control animals (no brain injury) showed only discrete Ten-2-like immunoreactive pyramidal neurons in the cerebral cortex. In contrast, Ten-2 immunoreactivity was significantly up-regulated in the reactive astrocytes in all brain-injured groups (p < 0.0001) when compared to the control group. Interestingly, reactive astrocytes also showed intense immunoreactivity to LPHN-1, an endogenous receptor for the Ten-2 splice variant named Lasso. Semi-quantitative analysis of Ten-2 and TCAP-2 expression revealed significant increases of both at 48 h, 3 days and 5 days (p < 0.0001) after brain injury compared to the remaining groups. Immortalized cerebellar astrocytes were also evaluated for Ten/TCAP expression and intracellular calcium signaling by fluorescence microscopy after TCAP-1 treatment. Immortalized astrocytes expressed additional Ten/TCAP homologs and exhibited significant increases in intracellular calcium concentrations after TCAP-1 treatment. This study is the first to demonstrate that Ten-2/TCAP-2 and LPHN-1 are upregulated in reactive astrocytes after a mechanical brain injury. Immortalized cerebellar astrocytes expressed Ten/TCAP homologs and TCAP-1 treatment stimulated intracellular calcium signaling. These findings disclose a new functional role of the Ten/TCAP system in astrocytes during tissue repair of the CNS.
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Affiliation(s)
- Gestter W L Tessarin
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, Brazil.,Department of Anatomy, Institute of Biosciences of Botucatu, São Paulo State University (UNESP), Botucatu, Brazil
| | - Ola M Michalec
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Kelly R Torres-da-Silva
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, Brazil.,Department of Anatomy, Institute of Biosciences of Botucatu, São Paulo State University (UNESP), Botucatu, Brazil
| | - André V Da Silva
- Department of Anatomy, Institute of Biosciences of Botucatu, São Paulo State University (UNESP), Botucatu, Brazil.,School of Medicine, Federal University of Mato Grosso do Sul (UFMS), Três Lagoas, Brazil
| | - Roelf J Cruz-Rizzolo
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Alaide Gonçalves
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Daniele C Gasparini
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, Brazil
| | - José A C Horta-Júnior
- Department of Anatomy, Institute of Biosciences of Botucatu, São Paulo State University (UNESP), Botucatu, Brazil
| | - Edilson Ervolino
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Jackson C Bittencourt
- Department of Anatomy, Institute of Biomedical Sciences, São Paulo University (USP), São Paulo, Brazil
| | - David A Lovejoy
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - Cláudio A Casatti
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, Brazil.,Department of Anatomy, Institute of Biosciences of Botucatu, São Paulo State University (UNESP), Botucatu, Brazil
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7
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Moreno-Salinas AL, Avila-Zozaya M, Ugalde-Silva P, Hernández-Guzmán DA, Missirlis F, Boucard AA. Latrophilins: A Neuro-Centric View of an Evolutionary Conserved Adhesion G Protein-Coupled Receptor Subfamily. Front Neurosci 2019; 13:700. [PMID: 31354411 PMCID: PMC6629964 DOI: 10.3389/fnins.2019.00700] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 06/20/2019] [Indexed: 12/21/2022] Open
Abstract
The adhesion G protein-coupled receptors latrophilins have been in the limelight for more than 20 years since their discovery as calcium-independent receptors for α-latrotoxin, a spider venom toxin with potent activity directed at neurotransmitter release from a variety of synapse types. Latrophilins are highly expressed in the nervous system. Although a substantial amount of studies has been conducted to describe the role of latrophilins in the toxin-mediated action, the recent identification of endogenous ligands for these receptors helped confirm their function as mediators of adhesion events. Here we hypothesize a role for latrophilins in inter-neuronal contacts and the formation of neuronal networks and we review the most recent information on their role in neurons. We explore molecular, cellular and behavioral aspects related to latrophilin adhesion function in mice, zebrafish, Drosophila melanogaster and Caenorhabditis elegans, in physiological and pathophysiological conditions, including autism spectrum, bipolar, attention deficit and hyperactivity and substance use disorders.
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Affiliation(s)
- Ana L. Moreno-Salinas
- Department of Cell Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - Monserrat Avila-Zozaya
- Department of Cell Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - Paul Ugalde-Silva
- Department of Cell Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - David A. Hernández-Guzmán
- Department of Physiology, Biophysics and Neurosciences, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - Fanis Missirlis
- Department of Physiology, Biophysics and Neurosciences, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - Antony A. Boucard
- Department of Cell Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
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8
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Sita LV, Diniz GB, Horta-Junior JAC, Casatti CA, Bittencourt JC. Nomenclature and Comparative Morphology of the Teneurin/TCAP/ADGRL Protein Families. Front Neurosci 2019; 13:425. [PMID: 31130838 PMCID: PMC6510184 DOI: 10.3389/fnins.2019.00425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/15/2019] [Indexed: 01/01/2023] Open
Affiliation(s)
- Luciane V. Sita
- Laboratory of Chemical Neuroanatomy, Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Giovanne B. Diniz
- Laboratory of Chemical Neuroanatomy, Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - José A. C. Horta-Junior
- Department of Anatomy, Institute of Biosciences, São Paulo State University, São Paulo, Brazil
| | - Claudio A. Casatti
- Department of Basic Sciences, São Paulo State University, São Paulo, Brazil
| | - Jackson C. Bittencourt
- Laboratory of Chemical Neuroanatomy, Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Center for Neuroscience and Behavior, Department of Experimental Psychology, Institute of Psychology, University of São Paulo, São Paulo, Brazil
- *Correspondence: Jackson C. Bittencourt,
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9
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Reid RM, Freij KW, Maples JC, Biga PR. Teneurins and Teneurin C-Terminal Associated Peptide (TCAP) in Metabolism: What's Known in Fish? Front Neurosci 2019; 13:177. [PMID: 30890915 PMCID: PMC6411802 DOI: 10.3389/fnins.2019.00177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 02/14/2019] [Indexed: 11/13/2022] Open
Abstract
Teneurins have well established roles in function and maintenance of the central nervous systems of vertebrates. In addition, teneurin c-terminal associated peptide (TCAP), a bioactive peptide found on the c-terminal portion of teneurins, has been shown to regulate glucose metabolism. Although, the majority of research conducted on the actions of teneurins and TCAPs has strictly focused on neurological systems in rodents, TCAP was first identified in rainbow trout after screening trout hypothalamic cDNA. This suggests a conserved functional role of TCAP across vertebrates, however, the current depth of literature on teneurins and TCAPs in fish is limited. In addition, the overall function of TCAP in regulating metabolism is unclear. This review will highlight work that has been conducted specifically in fish species in relation to the teneurin system and metabolism in order to identify areas of research that are needed for future work.
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Affiliation(s)
| | | | | | - Peggy R. Biga
- Department of Biology, University of Alabama at Birmingham, Birmingham, AL, United States
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10
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D'Aquila AL, Hsieh AHR, Hsieh AHM, De Almeida R, Lovejoy SR, Lovejoy DA. Expression and actions of corticotropin-releasing factor/diuretic hormone-like peptide (CDLP) and teneurin C-terminal associated peptide (TCAP) in the vase tunicate, Ciona intestinalis: Antagonism of the feeding response. Gen Comp Endocrinol 2017; 246:105-115. [PMID: 27292788 DOI: 10.1016/j.ygcen.2016.06.015] [Citation(s) in RCA: 13] [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: 02/10/2016] [Revised: 05/24/2016] [Accepted: 06/08/2016] [Indexed: 11/19/2022]
Abstract
Teneurin C-terminal associated peptide (TCAP) is a neuropeptide that bears some structural similarity to the corticotropin-releasing factor (CRF) family of peptides. TCAP and CRF are both implicated in the regulation of stress-related behaviors, as established in rodent models. However, in vertebrates, both TCAP and CRF possess three additional paralogous forms making vertebrate models difficult to assess with respect to TCAP-CRF interaction. As a urochordate, this species possesses single homologs of TCAP and of a CRF/Diuretic-like peptide (CDLP) in the genome, thereby establishing Ciona intestinalis as an excellent model organism to examine the interaction of these peptide systems. However, the lack of C. intestinalis synthetic peptides and specific antisera has complicated experimentation. We, therefore, prepared synthetic versions of CDLP and TCAP to prepare specific antisera and to investigate their bioactivity in this species. To analyze stress-related behaviors, a novel behavioral assay was used to characterize different types of contraction-based behaviors, using buccal opening contractions, cloacal opening contractions, lateral contractions, longitudinal contractions and expulsions. Protein and mRNA expression data indicate that the mature versions of both peptides are present in a number of tissues. With respect to behavioral activity, both TCAP- and CDLP-treated animals had distinct contraction profiles under ambient conditions. Moreover, food stimulation tests revealed that whereas CDLP-treated animals displayed a strong expulsion behavior in response to feeding, TCAP-treated animals did not show this effect. These actions are consistent with previous studies done in vertebrates.
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Affiliation(s)
- Andrea L D'Aquila
- Department of Cell and Systems Biology, University of Toronto, Ontario, Canada
| | - Alan Hwa-Ruey Hsieh
- Department of Cell and Systems Biology, University of Toronto, Ontario, Canada
| | - Adam Hwa-Ming Hsieh
- Department of Cell and Systems Biology, University of Toronto, Ontario, Canada
| | - Reuben De Almeida
- Department of Cell and Systems Biology, University of Toronto, Ontario, Canada
| | - Sabine R Lovejoy
- Department of Cell and Systems Biology, University of Toronto, Ontario, Canada
| | - David A Lovejoy
- Department of Cell and Systems Biology, University of Toronto, Ontario, Canada.
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