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Murillo Ramos AM, Wilson JY. Is there potential for estradiol receptor signaling in lophotrochozoans? Gen Comp Endocrinol 2024; 354:114519. [PMID: 38677339 DOI: 10.1016/j.ygcen.2024.114519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/09/2024] [Accepted: 04/11/2024] [Indexed: 04/29/2024]
Abstract
Estrogen receptors (ERs) are thought to be the ancestor of all steroid receptors and are present in most lophotrochozoans studied to date, including molluscs, annelids, and rotifers. A number of studies have investigated the functional role of estrogen receptors in invertebrate species, although most are in molluscs, where the receptor is constitutively active. In vitro experiments provided evidence for ligand-activated estrogen receptors in annelids, raising important questions about the role of estrogen signalling in lophotrochozoan lineages. Here, we review the concordant and discordant evidence of estradiol receptor signalling in lophotrochozoans, with a focus on annelids and rotifers. We explore the de novo synthesis of estrogens, the evolution and expression of estrogen receptors, and physiological responses to activation of estrogen receptors in the lophotrochozoan phyla Annelida and Rotifera. Key data are missing to determine if de novo biosynthesis of estradiol in non-molluscan lophotrochozoans is likely. For example, an ortholog for the CYP11 gene is present, but confirmation of substrate conversion and measured tissue products is lacking. Orthologs CYP17 and CYP19 are lacking, yet intermediates or products (e.g. estradiol) in tissues have been measured. Estrogen receptors are present in multiple species, and for a limited number, in vitro data show agonist binding of estradiol and/or transcriptional activation. The expression patterns of the lophotrochozoan ERs suggest developmental, reproductive, and digestive roles but are highly species dependent. E2 exposures suggest that lophotrochozoan ERs may play a role in reproduction, but no strong dose-response relationship has been established. Therefore, we expect most lophotrochozoan species, outside of perhaps platyhelminths, to have an ER but their physiological role remains elusive. Mining genomes for orthologs gene families responsible for steroidogenesis, coupled with in vitro and in vivo studies of the steroid pathway are needed to better assess whether lophotrochozoans are capable of estradiol biosynthesis. One major challenge is that much of the data are divided across a diversity of species. We propose that the polychaetes Capitella teleta or Platyneris dumerilii, and rotifer Brachionus manjavacas may be strong species choices for studies of estrogen receptor signalling, because of available genomic data, established laboratory culture techniques, and gene knockout potential.
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Affiliation(s)
- A M Murillo Ramos
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada.
| | - J Y Wilson
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada.
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Brascher TC, de Bortoli L, Toledo-Silva G, Zacchi FL, Razzera G. In silico structural features of the CgNR5A: CgDAX complex and its role in regulating gene expression of CYP target genes in Crassostrea gigas. CHEMOSPHERE 2024; 361:142443. [PMID: 38815811 DOI: 10.1016/j.chemosphere.2024.142443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 05/20/2024] [Accepted: 05/24/2024] [Indexed: 06/01/2024]
Abstract
Contamination of aquatic environments has been steadily increasing due to human activities. The Pacific oyster Crassostrea gigas has been used as a key species in studies assessing the impacts of contaminants on human health and the aquatic biome. In this context, cytochrome P450 (CYPs) play a crucial role in xenobiotic metabolism. In vertebrates many of these CYPs are regulated by nuclear receptors (NRs) and little is known about the NRs role in C. gigas. Particularly, the CgNR5A represents a homologue of SF1 and LRH-1 found in vertebrates. Members of this group can regulate genes of CYPs involved in lipid/steroid metabolism, with their activity regulated by other NR, called as DAX-1, generating a NR complex on DNA response elements (REs). As C. gigas does not exhibit steroid biosynthesis pathways, CgNR5A may play other physiological roles. To clarify this issue, we conducted an in silico investigation of the interaction between CgNR5A and DNA to identify potential C. gigas CYP target genes. Using molecular docking and dynamics simulations of the CgNR5A on DNA molecules, we identified a monomeric interaction with extended REs. This RE was found in the promoter region of 30 CYP genes and also the NR CgDAX. When the upstream regulatory region was analyzed, CYP2C39, CYP3A11, CYP4C21, CYP7A1, CYP17A1, and CYP27C1 were mapped as the main genes regulated by CgNR5A. These identified CYPs belong to families known for their involvement in xenobiotic and lipid/steroid metabolism. Furthermore, we reconstructed a trimeric complex, previously proposed for vertebrates, with CgNR5A:CgDAX and subjected it to molecular dynamics simulations analysis. Heterotrimeric complex remained stable during the simulations, suggesting that CgDAX may modulate CgNR5A transcriptional activity. This study provides insights into the potential physiological processes involving these NRs in the regulation of CYPs associated with xenobiotic and steroid/lipid metabolism.
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Affiliation(s)
- Theo Cardozo Brascher
- Programa de Pós-Graduação em Bioquímica, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Biomarcadores de Contaminação Aquática e Imunoquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Leonardo de Bortoli
- Programa de Pós-Graduação em Bioquímica, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Biomarcadores de Contaminação Aquática e Imunoquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Genômica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Guilherme Toledo-Silva
- Laboratório de Genômica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Flávia Lucena Zacchi
- Laboratório de Moluscos Marinhos, Universidade Federal de Santa Catarina, Florianópolis, SC, 88061-600, Brazil
| | - Guilherme Razzera
- Programa de Pós-Graduação em Bioquímica, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Biomarcadores de Contaminação Aquática e Imunoquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil.
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Miglioli A, Fonseca E, Besnardeau L, Canesi L, Schubert M, Dumollard R. First characterization of the nuclear receptor superfamily in the Mediterranean mussel Mytilus galloprovincialis: developmental expression dynamics and potential susceptibility to environmental chemicals. Philos Trans R Soc Lond B Biol Sci 2024; 379:20220500. [PMID: 38310933 PMCID: PMC10838637 DOI: 10.1098/rstb.2022.0500] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/15/2023] [Indexed: 02/06/2024] Open
Abstract
Endocrine-disrupting chemicals (EDCs) represent a global threat to human health and the environment. In vertebrates, lipophilic EDCs primarily act by mimicking endogenous hormones, thus interfering with the transcriptional activity of nuclear receptors (NRs). The demonstration of the direct translation of these mechanisms into perturbation of NR-mediated physiological functions in invertebrates, however, has rarely proven successful, as the modes of action of EDCs in vertebrates and invertebrates seem to be distinct. In the present work, we investigated the members of the NR superfamily in a bivalve mollusk, the Mediterranean mussel Mytilus galloprovincialis. In addition to annotating the M. galloprovincialis NR complement, we assessed the potential developmental functions and susceptibility to EDC challenge during early development by gene expression analyses. Our results indicate that a majority of mussel NRs are dynamically expressed during early development, including receptors characterized by a potential susceptibility to EDCs. This study thus indicates that NRs are major regulators of early mussel development and that NR-mediated endocrine disruption in the mussel could be occurring at a larger scale and at earlier stages of the life cycle than previously anticipated. Altogether, these findings will have significant repercussions for our understanding of the stability of natural mussel populations. This article is part of the theme issue 'Endocrine responses to environmental variation: conceptual approaches and recent developments'.
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Affiliation(s)
- Angelica Miglioli
- Institut de la Mer de Villefranche (IMEV), Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France
| | - Elza Fonseca
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208 Matosinhos, Portugal
| | - Lydia Besnardeau
- Institut de la Mer de Villefranche (IMEV), Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France
| | - Laura Canesi
- Dipartimento di Scenze della Terrra dell'Ambiente e della Vita (DISTAV), Università degli Studi di Genova, Corso Europa 26, 16132 Genova, Italy
| | - Michael Schubert
- Institut de la Mer de Villefranche (IMEV), Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France
| | - Rémi Dumollard
- Institut de la Mer de Villefranche (IMEV), Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France
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Lin J, Lu F, Wu Y, Huang H, Pan Y. The cellular trajectories of tumor-associated macrophages decipher the heterogeneity of pancreatic cancer. Funct Integr Genomics 2023; 23:343. [PMID: 37991591 DOI: 10.1007/s10142-023-01266-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/27/2023] [Accepted: 11/06/2023] [Indexed: 11/23/2023]
Abstract
Emerging evidence indicates that the interactions and dynamic changes among tumor-associated macrophages (TAMs) are pivotal in molding the tumor microenvironment (TME), thereby influencing diverse clinical outcomes. However, the potential clinical ramifications of these evolutionary shifts in tumor-associated macrophages within pancreatic adenocarcinoma (PAAD) remain largely unexamined. Single-cell RNA sequencing (scRNA-seq) data were retrieved from the Tumor Immune Single-cell Hub. The Seurat and Monocle algorithms were employed to elucidate the progression of TAMs, using non-negative matrix factorization (NMF) to determine molecular classifications. Subsequently, the prognosis, biological characteristics, genomic modifications, and immune landscape across various clusters were interpreted. Furthermore, the sensitivity of potential therapeutic drugs between subtypes was predicted. Cellular experiments were conducted to explore the function of the NR1H3 gene in pancreatic cancer. These experiments encompassed gene knockdown, proliferation assessment, clone formation evaluation, transwell examination, and apoptosis analysis. Trajectory gene expression analysis of tumor-associated macrophages identified three disparate clusters, each associated with different clinical outcomes Compared to clusters C1 and C2, cluster C3 is seemingly at a less advanced pathological stage and associates with a relatively favorable prognosis. Further investigation revealed pronounced genetic instability in cluster C2, whereas cluster C3 demonstrated notable genetic stability. Cluster C1, characterized as "immune-hot," exhibits an abundance of immune cells and elevated immune checkpoint expression, suggesting its suitability for immunotherapy. Furthermore, several potential therapeutic agents have been pinpointed, potentially facilitating the clinical application of these insights. Cell assays indicated that NR1H3 knockdown markedly induced apoptosis and suppressed clonogenesis, migration, and proliferation of pancreatic cancer cells in the PTAU-8988 and PANC-1 cell lines. Overall, our study discerned three clusters with unique characteristics, defined by the evolution of TAMs. We propose customized therapeutic strategies for patients within these specific clusters to improve clinical outcomes and optimize clinical management.
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Affiliation(s)
- Jiajing Lin
- Department of General Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, 350001, People's Republic of China
| | - Fengchun Lu
- Department of General Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, 350001, People's Republic of China
| | - Yuwei Wu
- Department of General Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, 350001, People's Republic of China
| | - Heguang Huang
- Department of General Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, 350001, People's Republic of China.
| | - Yu Pan
- Department of General Surgery, Fujian Medical University Union Hospital, No. 29 Xinquan Road, Fuzhou, 350001, People's Republic of China.
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Madaloz TZ, Dos Santos K, Zacchi FL, Bainy ACD, Razzera G. Nuclear receptor superfamily structural diversity in pacific oyster: In silico identification of estradiol binding candidates. CHEMOSPHERE 2023; 340:139877. [PMID: 37619748 DOI: 10.1016/j.chemosphere.2023.139877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/21/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
The increasing presence of anthropogenic contaminants in aquatic environments poses challenges for species inhabiting contaminated sites. Due to their structural binding characteristics to ligands that inhibit or activate gene transcription, these xenobiotic compounds frequently target the nuclear receptor superfamily. The present work aims to understand the potential interaction between the hormone 17-β-estradiol, an environmental contaminant, and the nuclear receptors of Crassostrea gigas, the Pacific oyster. This filter-feeding, sessile oyster species is subject to environmental changes and exposure to contaminants. In the Pacific oyster, the estrogen-binding nuclear receptor is not able to bind this hormone as it does in vertebrates. However, another receptor may exhibit responsiveness to estrogen-like molecules and derivatives. We employed high-performance in silico methodologies, including three-dimensional modeling, molecular docking and atomistic molecular dynamics to identify likely binding candidates with the target moecule. Our approach revealed that among the C. gigas nuclear receptor superfamily, candidates with the most favorable interaction with the molecule of interest belonged to the NR1D, NR1H, NR1P, NR2E, NHR42, and NR0B groups. Interestingly, NR1H and NR0B were associated with planktonic/larval life cycle stages, while NR1P, NR2E, and NR0B were associated with sessile/adult life stages. The application of this computational methodological strategy demonstrated high performance in the virtual screening of candidates for binding with the target xenobiotic molecule and can be employed in other studies in the field of ecotoxicology in non-model organisms.
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Affiliation(s)
- Tâmela Zamboni Madaloz
- Programa de Pós-Graduação Em Bioquímica, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Biomarcadores de Contaminação Aquática e Imunoquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Karin Dos Santos
- Programa de Pós-Graduação Em Bioquímica, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Biomarcadores de Contaminação Aquática e Imunoquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Flávia Lucena Zacchi
- Laboratório de Moluscos Marinhos, Universidade Federal de Santa Catarina, Florianópolis, SC, 88061-600, Brazil
| | - Afonso Celso Dias Bainy
- Programa de Pós-Graduação Em Bioquímica, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Biomarcadores de Contaminação Aquática e Imunoquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Guilherme Razzera
- Programa de Pós-Graduação Em Bioquímica, Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil; Laboratório de Biomarcadores de Contaminação Aquática e Imunoquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil.
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Zhang X, Zhang L, Si Y, Wen X, Wang L, Song L. Unveiling the functional diversity of ionotropic glutamate receptors in the Pacific oyster ( Crassostrea gigas) by systematic studies. Front Physiol 2023; 14:1280553. [PMID: 37965105 PMCID: PMC10642201 DOI: 10.3389/fphys.2023.1280553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/10/2023] [Indexed: 11/16/2023] Open
Abstract
Ionotropic glutamate receptors (iGluRs), pivotal in mediating excitatory neurosignals within the central nervous system, are instrumental in environmental stress responses. In this investigation, 12 iGluRs identified in the Pacific oyster are herein designated as CgiGluRs, and further categorized into three distinct subfamilies based on their transmembrane domains. Cross-species evolutionary analysis unveiled a high degree of conservation in the sequence and structural attributes of these CgiGluRs. These receptors are ubiquitously distributed across various tissues, with pronounced expression in the oyster's mantle, labial palps, and gills, underlining their integral role in the oyster's environmental sensing mechanisms. Post the D-shaped larval stage, a marked upward trend in CgiGluRs expression was observed, denoting their critical involvement in oyster development beyond this phase. Exposure to five metals-cadmium (Cd), copper (Cu), zinc (Zn), mercury (Hg), and lead (Pb)-elicited a significant upregulation of CgGRIA4 expression, indicating a robust response to metal stress. A KEGG enrichment analysis on 142 genes, exhibiting parallel expression trends with CgGRIA4 under metal stress, suggests that CgGRIA4 could augment excitatory signal transmission by activating glutamatergic and dopaminergic synapses, thereby contributing to the metal stress response in the oyster. This inquiry not only bolsters our comprehension of the iGluRs gene family in metal stress response but also paves the way for future exploration of its cardinal role in cellular signaling and environmental adaptability.
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Affiliation(s)
- Xueshu Zhang
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
- Southern Laboratory of Ocean Science and Engineering, Zhuhai, Guangdong, China
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, China
| | - Linfang Zhang
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, China
| | - Yiran Si
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, China
| | - Xue Wen
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
- Southern Laboratory of Ocean Science and Engineering, Zhuhai, Guangdong, China
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
- Southern Laboratory of Ocean Science and Engineering, Zhuhai, Guangdong, China
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, China
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Aguilar-Díaz H, Quiroz-Castañeda RE, Díaz-Esquivel IG, Cossío-Bayúgar R, Miranda-Miranda E. A Novel Rhipicephalus microplus Estrogen Related Receptor (RmERR), a Molecular and In Silico Characterization of a Potential Protein Binding Estrogen. Microorganisms 2023; 11:2294. [PMID: 37764138 PMCID: PMC10536290 DOI: 10.3390/microorganisms11092294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/01/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
The search for targets to control ticks and tick-borne diseases has been an ongoing problem, and so far, we still need efficient, non-chemical alternatives for this purpose. This search must consider new alternatives. For example genomics analysis is a widely applied tool in veterinary health studies to control pathogens. On the other hand, we propose that regulation of endocrine mechanisms represents a feasible alternative to biologically controlling tick infestations. Thus, we performed the molecular identification of an estrogen-related receptor gene of Rhipicephalus microplus called RmERR by RT-PCR in tick ovaries, embryonic cells, and hemolymph, which allowed us to analyze its expression and propose potential functions in endocrine mechanisms and developmental stages. In addition, we performed an in silico characterization to explore the molecular interactions of RmERR with different estrogens, estrogenic antagonists, and endocrine disruptor Bisphenol A (BPA), finding potential interactions predicted by docking analysis and supported by negative values of ΔG (which suggests the potential interaction of RmERR with the molecules evaluated). Additionally, phylogenetic reconstruction revealed that RmERR is grouped with other tick species but is phylogenetically distant from host vertebrates' ERRs. In summary, this study allowed for the identification of an ERR in cattle tick R. microplus for the first time and suggested its interaction with different estrogens, supporting the idea of a probable transregulation process in ticks. The elucidation of this interaction and its mechanisms unveiled its potential as a target to develop tick control strategies.
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Transcriptome Dynamics of an Oyster Larval Response to a Conspecific Cue-Mediated Settlement Induction in the Pacific Oyster Crassostrea gigas. DIVERSITY 2022. [DOI: 10.3390/d14070559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The molecular mechanisms underlying the conspecific cue-mediated larval settlement in Crassostrea gigas is not yet fully understood. In this study, we described and compared the transcriptomes of competent pediveligers (Pedi) and conspecific cue-induced postlarvae (PL). A total of 2383 candidate transcripts were identified: 740 upregulated and 1643 downregulated transcripts, after settlement. Gene Ontology analysis revealed active chitin binding, calcium ion binding, and extracellular region processes in both stages. Results showed that the differential expression trend of six candidate transcripts were consistent between the quantitative real-time PCR and transcriptome data. The differential transcript expression related to shell formation showed closely linked dynamics with a gene regulatory network that may involve the interplay of various hormone receptors, neurotransmitters, and neuropeptide receptors working together in a concerted way in the Pedi and PL stages. Our results highlight the transcriptome dynamics underlying the settlement of oysters on conspecific adult shells and demonstrate the potential use of this cue as an attractant for wild and hatchery-grown oyster larval attachment on artificial substrates. It also suggests the possible involvement of an ecdysone signal pathway that may be linked to a neuroendocrine-biomineralization crosstalk in C. gigas settlement.
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Xiong X, Cao Y, Li Z, Huang R, Du X, Zheng Z. Ecdysone signal pathway participates in shell formation in pearl oysters Pinctada fucata martensii. J Steroid Biochem Mol Biol 2022; 217:106045. [PMID: 34915168 DOI: 10.1016/j.jsbmb.2021.106045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 12/09/2021] [Accepted: 12/11/2021] [Indexed: 11/24/2022]
Abstract
Ecdysone exists in arthropods, Mollusca and other invertebrates and plays vital roles in exoskeleton formation of Ecdysozoa. However, little is known about its functions in bivalve species. Herein, we identified ecdysone from the serum of pearl oyster Pinctada fucata martensii and obtained the coding sequence of ecdysone receptor (PmEcR) and homologue of its heterodimer protein retinoid X receptor (PmRXR). The deduced amino acid sequences of PmEcR and PmRXR contained a DNA-binding and ligand-binding domain and were very similar to the orthologs of other species. Moreover, PmEcR and PmRXR were located in the nuclei and cytoplasm of HEK-293T cells. PmEcR and PmRXR were highly expressed in early embryos and biomineralized mantle tissue. Moreover, the serum concentration of ecdysone significantly increased at 2, 4, 6, and 8 h post-shell notching. The expression of PmEcR in the mantle tissue was significantly induced at the corresponding time points, while that of PmRXR was significantly induced at 6 h. Ecdysone stimulation remarkably induced the expression of growth factors (BMP2 and BMP7), transcription factors (PmRunt and AP-1), and shell matrix protein genes (chitinase, lysine-rich matrix protein (KRMP), TYR2, and PmCOLVI), which indicated that ecdysone signaling plays important roles in shell repair. However, yeast two-hybrid assay and bimolecular fluorescence complementation showed that PmEcR and PmRXR did not form dimers, suggesting the different molecular interactions of EcR in bivalves. These findings provide insights into the function of ecdysone and its regulation pathway in bivalve species.
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Affiliation(s)
- Xinwei Xiong
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Yanfei Cao
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Zhixin Li
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Ronglian Huang
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China; Pearl Breeding and Processing Engineering Technology Research Centre of Guangdong Province, Zhanjiang, 524088, China; Guangdong Science and Innovation Center for Pearl Culture, Zhanjiang, 524088, China; Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, China
| | - Xiaodong Du
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China; Pearl Breeding and Processing Engineering Technology Research Centre of Guangdong Province, Zhanjiang, 524088, China; Guangdong Science and Innovation Center for Pearl Culture, Zhanjiang, 524088, China; Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, China
| | - Zhe Zheng
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China; Pearl Breeding and Processing Engineering Technology Research Centre of Guangdong Province, Zhanjiang, 524088, China; Guangdong Science and Innovation Center for Pearl Culture, Zhanjiang, 524088, China; Guangdong Provincial Engineering Laboratory for Mariculture Organism Breeding, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, Zhanjiang, China.
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Ip JCH, Leung PTY, Qiu JW, Lam PKS, Wong CKC, Chan LL, Leung KMY. Transcriptomics reveal triphenyltin-induced molecular toxicity in the marine mussel Perna viridis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:148040. [PMID: 34091345 DOI: 10.1016/j.scitotenv.2021.148040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
Triphenyltin (TPT) is widely used as an active ingredient in antifouling paints and fungicides, and continuous release of this highly toxic endocrine disruptor has caused serious pollution to coastal marine ecosystems and organisms worldwide. Using bioassays and transcriptome sequencing, this study comprehensively investigated the molecular toxicity of TPT chloride (TPTCl) to the marine mussel Perna viridis which is a commercially important species and a common biomonitor for marine pollution in Southeast Asia. Our results indicated that TPTCl was highly toxic to adult P. viridis, with a 96-h LC10 and a 96-h EC10 at 18.7 μg/L and 2.7 μg/L, respectively. A 21-day chronic exposure to 2.7 μg/L TPTCl revealed a strong bioaccumulation of TPT in gills (up to 36.48 μg/g dry weight) and hepatopancreas (71.19 μg/g dry weight) of P. viridis. Transcriptome analysis indicated a time course dependent gene expression pattern in both gills and hepatopancreas. Higher numbers of differentially expressed genes were detected at Day 21 (gills: 1686 genes; hepatopancreas: 1450 genes) and at Day 28 (gills: 628 genes; hepatopancreas: 238 genes) when compared with that at Day 7 (gills: 104 genes, hepatopancreas: 112 genes). Exposure to TPT strongly impaired the endocrine system through targeting on nuclear receptors and putative steroid metabolic genes. Moreover, TPT widely disrupted cellular functions, including lipid metabolism, xenobiotic detoxification, immune response and endoplasmic-reticulum-associated degradation expression, which might have caused the bioaccumulation of TPT in the tissues and aggregation of peptides and proteins in cells that further activated the apoptosis process in P. viridis. Overall, this study has advanced our understanding on both ecotoxicity and molecular toxic mechanisms of TPT to marine mussels, and contributed empirical toxicity data for risk assessment and management of TPT contamination.
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Affiliation(s)
- Jack Chi-Ho Ip
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China; Department of Biology and Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong Baptist University, Kowloon, Hong Kong, China
| | - Priscilla T Y Leung
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Jian-Wen Qiu
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; Department of Biology and Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong Baptist University, Kowloon, Hong Kong, China
| | - Paul K S Lam
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China
| | - Chris K C Wong
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; Department of Biology and Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong Baptist University, Kowloon, Hong Kong, China
| | - Leo L Chan
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Kenneth M Y Leung
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China.
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11
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Lesoway MP, Henry JQ. Retinoids promote penis development in sequentially hermaphroditic snails. Dev Biol 2021; 478:122-132. [PMID: 34224682 DOI: 10.1016/j.ydbio.2021.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 06/21/2021] [Accepted: 06/30/2021] [Indexed: 11/30/2022]
Abstract
Sexual systems are surprisingly diverse, considering the ubiquity of sexual reproduction. Sequential hermaphroditism, the ability of an individual to change sex, has emerged multiple times independently across the animal kingdom. In molluscs, repeated shifts between ancestrally separate sexes and hermaphroditism are generally found at the level of family and above, suggesting recruitment of deeply conserved mechanisms. Despite this, molecular mechanisms of sexual development are poorly known. In molluscs with separate sexes, endocrine disrupting toxins bind the retinoid X receptor (RXR), activating ectopic male development in females, suggesting the retinoid pathway as a candidate controlling sexual transitions in sequential hermaphrodites. We therefore tested the role of retinoic acid signaling in sequentially hermaphroditic Crepidula snails, which develop first into males, then change sex, maturing into females. We show that retinoid agonists induce precocious penis growth in juveniles and superimposition of male development in females. Combining RXR antagonists with retinoid agonists significantly reduces penis length in induced juveniles, while similar treatments using retinoic acid receptor (RAR) antagonists increase penis length. Transcripts of both receptors are expressed in the induced penis. Our findings therefore show that retinoid signaling can initiate molluscan male genital development, and regulate penis length. Further, we show that retinoids induce ectopic male development in multiple Crepidula species. Species-specific influence of conspecific induction of sexual transitions correlates with responsiveness to retinoids. We propose that retinoid signaling plays a conserved role in molluscan male development, and that shifts in the timing of retinoid signaling may have been important for the origins of sequential hermaphroditism within molluscs.
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Affiliation(s)
- Maryna P Lesoway
- Department of Cell and Developmental Biology University of Illinois, 601 S Goodwin Avenue Urbana, IL, USA, 61801.
| | - Jonathan Q Henry
- Department of Cell and Developmental Biology University of Illinois, 601 S Goodwin Avenue Urbana, IL, USA, 61801
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12
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Taubenheim J, Kortmann C, Fraune S. Function and Evolution of Nuclear Receptors in Environmental-Dependent Postembryonic Development. Front Cell Dev Biol 2021; 9:653792. [PMID: 34178983 PMCID: PMC8222990 DOI: 10.3389/fcell.2021.653792] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/06/2021] [Indexed: 12/14/2022] Open
Abstract
Nuclear receptors (NRs) fulfill key roles in the coordination of postembryonal developmental transitions in animal species. They control the metamorphosis and sexual maturation in virtually all animals and by that the two main environmental-dependent developmental decision points. Sexual maturation and metamorphosis are controlled by steroid receptors and thyroid receptors, respectively in vertebrates, while both processes are orchestrated by the ecdysone receptor (EcR) in insects. The regulation of these processes depends on environmental factors like nutrition, temperature, or photoperiods and by that NRs form evolutionary conserved mediators of phenotypic plasticity. While the mechanism of action for metamorphosis and sexual maturation are well studied in model organisms, the evolution of these systems is not entirely understood and requires further investigation. We here review the current knowledge of NR involvement in metamorphosis and sexual maturation across the animal tree of life with special attention to environmental integration and evolution of the signaling mechanism. Furthermore, we compare commonalities and differences of the different signaling systems. Finally, we identify key gaps in our knowledge of NR evolution, which, if sufficiently investigated, would lead to an importantly improved understanding of the evolution of complex signaling systems, the evolution of life history decision points, and, ultimately, speciation events in the metazoan kingdom.
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Affiliation(s)
- Jan Taubenheim
- Zoology and Organismic Interactions, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Constantin Kortmann
- Zoology and Organismic Interactions, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Sebastian Fraune
- Zoology and Organismic Interactions, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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13
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Pes K, Friese A, Cox CJ, Laizé V, Fernández I. Biochemical and molecular responses of the Mediterranean mussel (Mytilus galloprovincialis) to short-term exposure to three commonly prescribed drugs. MARINE ENVIRONMENTAL RESEARCH 2021; 168:105309. [PMID: 33798995 DOI: 10.1016/j.marenvres.2021.105309] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/03/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Pharmaceuticals represent a group of emerging contaminants. The short-term effect (3 and 7 days) of warfarin (1 and 10 mg L-1), dexamethasone (0.392 and 3.92 mg L-1) and imidazole (0.013 and 0.13 mg L-1) exposure was evaluated on mussels (Mytilus galloprovincialis). Total antioxidant status, glutathione reductase, glutathione peroxidase (GPx) and superoxide dismutase enzyme activities, and the expression of genes involved in the xenobiotic response (ATP binding cassette subfamily B member 1 (abcb1) and several nuclear receptor family J (nr1j) isoforms), were evaluated. All nr1j isoforms are suggested to be the xenobiotic receptor orthologs of the NR1I family. All drugs increased GPx activity and altered the expression of particular nr1j isoforms. Dexamethasone exposure also decreased abcb1 expression. These findings raised some concerns regarding the release of these pharmaceuticals into the aquatic environment. Thus, further studies might be needed to perform an accurate environmental risk assessment of these 3 poorly studied drugs.
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Affiliation(s)
- Katia Pes
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Annika Friese
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Cymon J Cox
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Vincent Laizé
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Ignacio Fernández
- Aquaculture Research Center, Agro-Technological Institute of Castilla y León (ITACyL), Ctra. Arévalo, s/n. 40196 Zamarramala, Segovia, Spain.
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14
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Tallec K, Paul-Pont I, Petton B, Alunno-Bruscia M, Bourdon C, Bernardini I, Boulais M, Lambert C, Quéré C, Bideau A, Le Goïc N, Cassone AL, Le Grand F, Fabioux C, Soudant P, Huvet A. Amino-nanopolystyrene exposures of oyster ( Crassostrea gigas) embryos induced no apparent intergenerational effects. Nanotoxicology 2021; 15:477-493. [PMID: 33555961 DOI: 10.1080/17435390.2021.1879963] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Early life stages (ELS) of numerous marine invertebrates mustcope with man-made contaminants, including plastic debris, during their pelagic phase. Among the diversity of plastic particles, nano-sized debris, known as nanoplastics, can induce effects with severe outcomes in ELS of various biological models, including the Pacific oyster Crassostrea gigas. Here, we investigated the effects of a sub-lethal dose (0.1 µg mL-1) of 50 nm polystyrene nanobeads (nano-PS) with amine functions on oyster embryos (24 h exposure) and we assessed consequences on larval and adult performances over two generations of oysters. Only a few effects were observed. Lipid analyses revealed that first-generation (G1) embryos exposed to nano-PS displayed a relative increase in cardiolipin content (+9.7%), suggesting a potential modification of mitochondrial functioning. G1-larvae issued from exposed embryos showed decreases in larval growth (-9%) and lipid storage (-20%). No effect was observed at the G1 adult stage in terms of growth, ecophysiological parameters (clearance and respiration rates, absorption efficiency), or reproductive outputs (gonadic development, gamete quality). Second generation (G2) larvae issued from control G1 displayed a significant growth reduction after G2 embryonic exposure to nano-PS (-24%) compared to control (as observed at the first generation), while no intergenerational effect was detected on G2 larvae issued from G1 exposed embryos. Overall, the present experimental study suggests a low incidence of a short embryonic exposure to nano-PS on oyster phenotypes along the entire life cycle until the next larval generation.
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Affiliation(s)
- K Tallec
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - I Paul-Pont
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - B Petton
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - M Alunno-Bruscia
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Bourdon
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - I Bernardini
- Dipartimento di Biomedicina Comparata e Alimentazione, Università degli Studi di Padova, Padova, Italy.,Department of Physical, Earth and Environmental Sciences, University of Siena, Siena, Italy
| | - M Boulais
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Lambert
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Quéré
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - A Bideau
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - N Le Goïc
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - A-L Cassone
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - F Le Grand
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Fabioux
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - P Soudant
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - A Huvet
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
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15
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Vogeler S, Carboni S, Li X, Joyce A. Phylogenetic analysis of the caspase family in bivalves: implications for programmed cell death, immune response and development. BMC Genomics 2021; 22:80. [PMID: 33494703 PMCID: PMC7836458 DOI: 10.1186/s12864-021-07380-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/08/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Apoptosis is an important process for an organism's innate immune system to respond to pathogens, while also allowing for cell differentiation and other essential life functions. Caspases are one of the key protease enzymes involved in the apoptotic process, however there is currently a very limited understanding of bivalve caspase diversity and function. RESULTS In this work, we investigated the presence of caspase homologues using a combination of bioinformatics and phylogenetic analyses. We blasted the Crassostrea gigas genome for caspase homologues and identified 35 potential homologues in the addition to the already cloned 23 bivalve caspases. As such, we present information about the phylogenetic relationship of all identified bivalve caspases in relation to their homology to well-established vertebrate and invertebrate caspases. Our results reveal unexpected novelty and complexity in the bivalve caspase family. Notably, we were unable to identify direct homologues to the initiator caspase-9, a key-caspase in the vertebrate apoptotic pathway, inflammatory caspases (caspase-1, - 4 or - 5) or executioner caspases-3, - 6, - 7. We also explored the fact that bivalves appear to possess several unique homologues to the initiator caspase groups - 2 and - 8. Large expansions of caspase-3 like homologues (caspase-3A-C), caspase-3/7 group and caspase-3/7-like homologues were also identified, suggesting unusual roles of caspases with direct implications for our understanding of immune response in relation to common bivalve diseases. Furthermore, we assessed the gene expression of two initiator (Cg2A, Cg8B) and four executioner caspases (Cg3A, Cg3B, Cg3C, Cg3/7) in C. gigas late-larval development and during metamorphosis, indicating that caspase expression varies across the different developmental stages. CONCLUSION Our analysis provides the first overview of caspases across different bivalve species with essential new insights into caspase diversity, knowledge that can be used for further investigations into immune response to pathogens or regulation of developmental processes.
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Affiliation(s)
- Susanne Vogeler
- Department of Marine Science, University of Gothenburg, Carl Skottbergsgata 22 B, 41319, Gothenburg, Sweden
| | - Stefano Carboni
- Institute of Aquaculture, University of Stirling, Stirling, Scotland, FK9 4LA, UK
| | - Xiaoxu Li
- South Australia Research and Development Institute Aquatic Sciences Centre, 2 Hamra Ave, West Beach, SA, 5024, Australia
| | - Alyssa Joyce
- Department of Marine Science, University of Gothenburg, Carl Skottbergsgata 22 B, 41319, Gothenburg, Sweden.
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16
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Miglioli A, Canesi L, Gomes IDL, Schubert M, Dumollard R. Nuclear Receptors and Development of Marine Invertebrates. Genes (Basel) 2021; 12:genes12010083. [PMID: 33440651 PMCID: PMC7827873 DOI: 10.3390/genes12010083] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/31/2020] [Accepted: 01/04/2021] [Indexed: 12/12/2022] Open
Abstract
Nuclear Receptors (NRs) are a superfamily of transcription factors specific to metazoans that have the unique ability to directly translate the message of a signaling molecule into a transcriptional response. In vertebrates, NRs are pivotal players in countless processes of both embryonic and adult physiology, with embryonic development being one of the most dynamic periods of NR activity. Accumulating evidence suggests that NR signaling is also a major regulator of development in marine invertebrates, although ligands and transactivation dynamics are not necessarily conserved with respect to vertebrates. The explosion of genome sequencing projects and the interpretation of the resulting data in a phylogenetic context allowed significant progress toward an understanding of NR superfamily evolution, both in terms of molecular activities and developmental functions. In this context, marine invertebrates have been crucial for characterizing the ancestral states of NR-ligand interactions, further strengthening the importance of these organisms in the field of evolutionary developmental biology.
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Affiliation(s)
- Angelica Miglioli
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France; (A.M.); (I.D.L.G.); (M.S.)
- Dipartimento di Scienze della Terra, dell’Ambiente e della Vita (DISTAV), Università degli Studi di Genova, Corso Europa 26, 16132 Genova, Italy;
| | - Laura Canesi
- Dipartimento di Scienze della Terra, dell’Ambiente e della Vita (DISTAV), Università degli Studi di Genova, Corso Europa 26, 16132 Genova, Italy;
| | - Isa D. L. Gomes
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France; (A.M.); (I.D.L.G.); (M.S.)
| | - Michael Schubert
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France; (A.M.); (I.D.L.G.); (M.S.)
| | - Rémi Dumollard
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France; (A.M.); (I.D.L.G.); (M.S.)
- Correspondence:
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17
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Vogeler S, Carboni S, Li X, Nevejan N, Monaghan SJ, Ireland JH, Joyce A. Bivalves are NO different: nitric oxide as negative regulator of metamorphosis in the Pacific oyster, Crassostrea gigas. BMC DEVELOPMENTAL BIOLOGY 2020; 20:23. [PMID: 33228520 PMCID: PMC7686737 DOI: 10.1186/s12861-020-00232-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/11/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Nitric oxide (NO) is presumed to be a regulator of metamorphosis in many invertebrate species, and although NO pathways have been comparatively well-investigated in gastropods, annelids and crustaceans, there has been very limited research on the effects of NO on metamorphosis in bivalve shellfish. RESULTS In this paper, we investigate the effects of NO pathway inhibitors and NO donors on metamorphosis induction in larvae of the Pacific oyster, Crassostrea gigas. The nitric oxides synthase (NOS) inhibitors s-methylisothiourea hemisulfate salt (SMIS), aminoguanidine hemisulfate salt (AGH) and 7-nitroindazole (7-NI) induced metamorphosis at 75, 76 and 83% respectively, and operating in a concentration-dependent manner. Additional induction of up to 54% resulted from exposures to 1H-[1,2,4]Oxadiazole[4,3-a]quinoxalin-1-one (ODQ), an inhibitor of soluble guanylyl cyclase, with which NO interacts to catalyse the synthesis of cyclic guanosine monophosphate (cGMP). Conversely, high concentrations of the NO donor sodium nitroprusside dihydrate in combination with metamorphosis inducers epinephrine, MK-801 or SMIS, significantly decreased metamorphosis, although a potential harmful effect of excessive NO unrelated to metamorphosis pathway cannot be excluded. Expression of CgNOS also decreased in larvae after metamorphosis regardless of the inducers used, but intensified again post-metamorphosis in spat. Fluorescent detection of NO in competent larvae with DAF-FM diacetate and localisation of the oyster nitric oxide synthase CgNOS expression by in-situ hybridisation showed that NO occurs primarily in two key larval structures, the velum and foot. cGMP was also detected in the foot using immunofluorescent assays, and is potentially involved in the foot's smooth muscle relaxation. CONCLUSION Together, these results suggest that the NO pathway acts as a negative regulator of metamorphosis in Pacific oyster larvae, and that NO reduction induces metamorphosis by inhibiting swimming or crawling behaviour, in conjunction with a cascade of additional neuroendocrine downstream responses.
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Affiliation(s)
- Susanne Vogeler
- Department of Marine Science, University of Gothenburg, Carl Skottbergsgata 22 B, 41319, Gothenburg, Sweden
| | - Stefano Carboni
- Institute of Aquaculture, University of Stirling, FK9 4LA, Stirling, Scotland, UK
| | - Xiaoxu Li
- South Australia Research and Development Institute Aquatic Sciences Centre, 2 Hamra Ave, West Beach, SA, 5024, Australia
| | - Nancy Nevejan
- Department of Animal Production, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Sean J Monaghan
- Institute of Aquaculture, University of Stirling, FK9 4LA, Stirling, Scotland, UK
| | - Jacqueline H Ireland
- Institute of Aquaculture, University of Stirling, FK9 4LA, Stirling, Scotland, UK
| | - Alyssa Joyce
- Department of Marine Science, University of Gothenburg, Carl Skottbergsgata 22 B, 41319, Gothenburg, Sweden.
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Cloning and characterisation of NMDA receptors in the Pacific oyster, Crassostrea gigas (Thunberg, 1793) in relation to metamorphosis and catecholamine synthesis. Dev Biol 2020; 469:144-159. [PMID: 33131707 DOI: 10.1016/j.ydbio.2020.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/19/2020] [Accepted: 10/19/2020] [Indexed: 01/30/2023]
Abstract
Bivalve metamorphosis is a developmental transition from a free-living larva to a benthic juvenile (spat), regulated by a complex interaction of neurotransmitters and neurohormones such as L-DOPA and epinephrine (catecholamine). We recently suggested an N-Methyl-D-aspartate (NMDA) receptor pathway as an additional and previously unknown regulator of bivalve metamorphosis. To explore this theory further, we successfully induced metamorphosis in the Pacific oyster, Crassostrea gigas, by exposing competent larvae to L-DOPA, epinephrine, MK-801 and ifenprodil. Subsequently, we cloned three NMDA receptor subunits CgNR1, CgNR2A and CgNR2B, with sequence analysis suggesting successful assembly of functional NMDA receptor complexes and binding to natural occurring agonists and the channel blocker MK-801. NMDA receptor subunits are expressed in competent larvae, during metamorphosis and in spat, but this expression is neither self-regulated nor regulated by catecholamines. In-situ hybridisation of CgNR1 in competent larvae identified NMDA receptor presence in the apical organ/cerebral ganglia area with a potential sensory function, and in the nervous network of the foot indicating an additional putative muscle regulatory function. Furthermore, phylogenetic analyses identified molluscan-specific gene expansions of key enzymes involved in catecholamine biosynthesis. However, exposure to MK-801 did not alter the expression of selected key enzymes, suggesting that NMDA receptors do not regulate the biosynthesis of catecholamines via gene expression.
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19
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Tallec K, Huvet A, Di Poi C, González-Fernández C, Lambert C, Petton B, Le Goïc N, Berchel M, Soudant P, Paul-Pont I. Nanoplastics impaired oyster free living stages, gametes and embryos. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:1226-1235. [PMID: 30118910 DOI: 10.1016/j.envpol.2018.08.020] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/05/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
In the marine environment, most bivalve species base their reproduction on external fertilization. Hence, gametes and young stages face many threats, including exposure to plastic wastes which represent more than 80% of the debris in the oceans. Recently, evidence has been produced on the presence of nanoplastics in oceans, thus motivating new studies of their impacts on marine life. Because no information is available about their environmental concentrations, we performed dose-response exposure experiments with polystyrene particles to assess the extent of micro/nanoplastic toxicity. Effects of polystyrene with different sizes and functionalizations (plain 2-μm, 500-nm and 50-nm; COOH-50 nm and NH2-50 nm) were assessed on three key reproductive steps (fertilization, embryogenesis and metamorphosis) of Pacific oysters (Crassostrea gigas). Nanoplastics induced a significant decrease in fertilization success and in embryo-larval development with numerous malformations up to total developmental arrest. The NH2-50 beads had the strongest toxicity to both gametes (EC50 = 4.9 μg/mL) and embryos (EC50 = 0.15 μg/mL), showing functionalization-dependent toxicity. No effects of plain microplastics were recorded. These results highlight that exposures to nanoplastics may have deleterious effects on planktonic stages of oysters, presumably interacting with biological membranes and causing cyto/genotoxicity with potentially drastic consequences for their reproductive success.
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Affiliation(s)
- Kevin Tallec
- Ifremer, Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 UBO/CNRS/IRD/Ifremer, CS 10070, 29280, Plouzané, France.
| | - Arnaud Huvet
- Ifremer, Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 UBO/CNRS/IRD/Ifremer, CS 10070, 29280, Plouzané, France
| | - Carole Di Poi
- Ifremer, Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 UBO/CNRS/IRD/Ifremer, CS 10070, 29280, Plouzané, France
| | - Carmen González-Fernández
- Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS/UBO/IRD/Ifremer - Institut Universitaire Européen de la Mer, Technopôle Brest-Iroise - Rue Dumont d'Urville, 29280, Plouzané, France
| | - Christophe Lambert
- Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS/UBO/IRD/Ifremer - Institut Universitaire Européen de la Mer, Technopôle Brest-Iroise - Rue Dumont d'Urville, 29280, Plouzané, France
| | - Bruno Petton
- Ifremer, Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 UBO/CNRS/IRD/Ifremer, CS 10070, 29280, Plouzané, France
| | - Nelly Le Goïc
- Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS/UBO/IRD/Ifremer - Institut Universitaire Européen de la Mer, Technopôle Brest-Iroise - Rue Dumont d'Urville, 29280, Plouzané, France
| | - Mathieu Berchel
- Université de Brest, Université Européenne de Bretagne, CNRS UMR 6521, CEMCA, IFR 148 ScInBios, 6 Avenue Victor Le Gorgeu, 29238, Brest, France
| | - Philippe Soudant
- Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS/UBO/IRD/Ifremer - Institut Universitaire Européen de la Mer, Technopôle Brest-Iroise - Rue Dumont d'Urville, 29280, Plouzané, France
| | - Ika Paul-Pont
- Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS/UBO/IRD/Ifremer - Institut Universitaire Européen de la Mer, Technopôle Brest-Iroise - Rue Dumont d'Urville, 29280, Plouzané, France
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Noventa S, Hacker C, Rowe D, Elgy C, Galloway T. Dissolution and bandgap paradigms for predicting the toxicity of metal oxide nanoparticles in the marine environment: an in vivo study with oyster embryos. Nanotoxicology 2017; 12:63-78. [DOI: 10.1080/17435390.2017.1418920] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Seta Noventa
- College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Christian Hacker
- College of Life and Environmental Sciences, Bioimaging Centre, University of Exeter, Exeter, UK
| | - Darren Rowe
- College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Christine Elgy
- Department of Geography, Earth and Environmental Sciences, Facility for Environmental Nanoscience Analysis and Characterization, University of Birmingham, Birmingham, UK
| | - Tamara Galloway
- College of Life and Environmental Sciences, University of Exeter, Exeter, UK
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Pozzi A, Plazzi F, Milani L, Ghiselli F, Passamonti M. SmithRNAs: Could Mitochondria "Bend" Nuclear Regulation? Mol Biol Evol 2017; 34:1960-1973. [PMID: 28444389 PMCID: PMC5850712 DOI: 10.1093/molbev/msx140] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Typically, animal mitochondria have very compact genomes, with few short intergenic regions, and no introns. Hence, it may seem that there is little space for unknown functions in mitochondrial DNA (mtDNA). However, mtDNA can also operate through RNA interference, as small non coding RNAs (sncRNAs) produced by mtDNA have already been proposed for humans. We sequenced sncRNA libraries from isolated mitochondria of Ruditapes philippinarum (Mollusca Bivalvia) gonads, a species with doubly uniparental inheritance of mitochondria, and identified several putative sncRNAs of mitochondrial origin. Some sncRNAs are transcribed by intergenic regions that form stable stem-hairpin structures, which makes them good miRNA-like candidates. We decided to name them small mitochondrial highly-transcribed RNAs (smithRNAs). Many concurrent data support that we have recovered sncRNAs of mitochondrial origin that might be involved in gonad formation and able to affect nuclear gene expression. This possibility has been never suggested before. If mtDNA can affect nuclear gene expression through RNA interference, this opens a plethora of new possibilities for it to interact with the nucleus, and makes metazoan mtDNA a much more complex genome than previously thought.
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Affiliation(s)
- Andrea Pozzi
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Federico Plazzi
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Liliana Milani
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Fabrizio Ghiselli
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Marco Passamonti
- Department of Biological Geological and Environmental Sciences, University of Bologna, Bologna, Italy
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22
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Vogeler S, Galloway TS, Isupov M, Bean TP. Cloning retinoid and peroxisome proliferator-activated nuclear receptors of the Pacific oyster and in silico binding to environmental chemicals. PLoS One 2017; 12:e0176024. [PMID: 28426724 PMCID: PMC5398557 DOI: 10.1371/journal.pone.0176024] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 04/04/2017] [Indexed: 01/15/2023] Open
Abstract
Disruption of nuclear receptors, a transcription factor superfamily regulating gene expression in animals, is one proposed mechanism through which pollution causes effects in aquatic invertebrates. Environmental pollutants have the ability to interfere with the receptor's functions through direct binding and inducing incorrect signals. Limited knowledge of invertebrate endocrinology and molecular regulatory mechanisms, however, impede the understanding of endocrine disruptive effects in many aquatic invertebrate species. Here, we isolated three nuclear receptors of the Pacific oyster, Crassostrea gigas: two isoforms of the retinoid X receptor, CgRXR-1 and CgRXR-2, a retinoic acid receptor ortholog CgRAR, and a peroxisome proliferator-activated receptor ortholog CgPPAR. Computer modelling of the receptors based on 3D crystal structures of human proteins was used to predict each receptor's ability to bind to different ligands in silico. CgRXR showed high potential to bind and be activated by 9-cis retinoic acid and the organotin tributyltin (TBT). Computer modelling of CgRAR revealed six residues in the ligand binding domain, which prevent the successful interaction with natural and synthetic retinoid ligands. This supports an existing theory of loss of retinoid binding in molluscan RARs. Modelling of CgPPAR was less reliable due to high discrepancies in sequence to its human ortholog. Yet, there are suggestions of binding to TBT, but not to rosiglitazone. The effect of potential receptor ligands on early oyster development was assessed after 24h of chemical exposure. TBT oxide (0.2μg/l), all-trans retinoic acid (ATRA) (0.06 mg/L) and perfluorooctanoic acid (20 mg/L) showed high effects on development (>74% abnormal developed D-shelled larvae), while rosiglitazone (40 mg/L) showed no effect. The results are discussed in relation to a putative direct (TBT) disruption effect on nuclear receptors. The inability of direct binding of ATRA to CgRAR suggests either a disruptive effect through a pathway excluding nuclear receptors or an indirect interaction. Our findings provide valuable information on potential mechanisms of molluscan nuclear receptors and the effects of environmental pollution on aquatic invertebrates.
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Affiliation(s)
- Susanne Vogeler
- School of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
- Centre for Environment, Fisheries and Aquaculture Science, Cefas Weymouth Laboratory, Weymouth, United Kingdom
| | - Tamara S. Galloway
- School of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Michail Isupov
- School of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Tim P. Bean
- Centre for Environment, Fisheries and Aquaculture Science, Cefas Weymouth Laboratory, Weymouth, United Kingdom
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Wu J, Wan F, Sheng H, Shi G, Shen Y, Lin G, Dai B, Zhu Y, Ye D. NR1H3 Expression is a Prognostic Factor of Overall Survival for Patients with Muscle-Invasive Bladder Cancer. J Cancer 2017; 8:852-860. [PMID: 28382148 PMCID: PMC5381174 DOI: 10.7150/jca.17845] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 12/22/2016] [Indexed: 12/21/2022] Open
Abstract
Background: Nuclear receptors (NRs) are a class of transcription factors that regulate many cellular functions through manipulation of gene expression and also play important roles in tumorigenesis, proliferation, progression and prognosis in various kinds of cancers according to recent studies. This work aimed to determine the predictive ability of NRs in muscle-invasive bladder cancer (MIBC). Patients and methods: A total of 308 MIBC patients with complete clinicopathological and RNASeq data from The Cancer Genome Atlas (TCGA) cohort were collected for filtration. Genes showed clear correlations with overall survival (OS) and recurrence free survival (RFS) were further validated in 123 MIBC patients recruited consecutively from 2008 to 2012 in Fudan University Shanghai Cancer Center (FUSCC) cohort. Cox proportional hazards regression model and Kaplan-Meier plot were used to assess the relative factors. Results: In TCGA cohort, we found that high NR1H3 (HR=0.779, 95% CI: 0.634 - 0.957), NR2C1 (HR=0.673, 95% CI: 0.458 - 0.989) and NR2F6 (HR=0.750, 95% CI: 0.574 - 0.980) expressions were independent factors of favorable OS, while only low NR1H3 (log-rank test, P=0.0076) and NR2F6 (log-rank test, P=0.0395) expressions had the ability to predict poor prognosis for RFS. Further, in FUSCC validating cohort, we confirmed that low NR1H3 expression level was independent factor of poor OS (HR=1.295, 95% CI: 1.064 - 1.576) and it had the ability to predict poor RFS (log-rank test, P=0.0059). Conclusions: Low NR1H3 expression level is an independent prognostic factor of poor OS, and can also predict worse RFS in MIBC patients. Our “TCGA filtrating and local database validating” model can help reveal more prognostic biomarkers and cast a new light in understanding certain gene function in MIBC.
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Affiliation(s)
- Junlong Wu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Fangning Wan
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Haoyue Sheng
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guohai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yijun Shen
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guowen Lin
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bo Dai
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yiping Zhu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China;; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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