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Boidin-Wichlacz C, Andersen AC, Jouy N, Hourdez S, Tasiemski A. A single coelomic cell type is involved in both immune and respiratory functions of the coastal bioindicator annelid: Capitella C-Channel1 from the English Channel. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 153:105132. [PMID: 38181832 DOI: 10.1016/j.dci.2024.105132] [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: 09/18/2023] [Revised: 12/15/2023] [Accepted: 01/03/2024] [Indexed: 01/07/2024]
Abstract
The polychaete Capitella is a typical member of the 'thiobiome', and is commonly used as an eutrophication indicator species in environmental assessment studies. To deal with a sulfide-rich and poisonous surrounding, cells in close contact with the environment, and thus able to play a major role in detoxication and survival, are circulating cells. This work aimed to morpho-functionally describe the circulating coelomic cells of Capitella from the English Channel inhabiting the sulfide-rich mud in Roscoff Harbor. In general, worms have three types of circulating cells, granulocytes involved in bacterial clearance and defense against microorganisms, eleocytes with an essentially trophic role and elimination of cellular waste, and erythrocytes which play a role in detoxification and respiration via their intracellular hemoglobin. By combining diverse microscopic and cellular approaches, we provide evidence that Capitella does not possess granulocytes and eleocytes, but rather a single abundant rounded cell type with the morphological characteristics of erythrocytes i.e. small size and production of intracellular hemoglobin. Surprisingly, our data show that in addition to their respiratory function, these red cells could exert phagocytic activities, and produce an antimicrobial peptide. This latter immune role is usually supported by granulocytes. Our data highlight that the erythrocytes of Capitella from the English Channel differ in morphology and bear more functions than the erythrocytes of other annelids. The simplicity of this multi-task (or polyvalent) single-cell type makes Capitella an interesting model for studies of the impact of the environment on the immunity of this bioindicator species.
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Affiliation(s)
- Céline Boidin-Wichlacz
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000, Lille, France.
| | - Ann C Andersen
- Station Biologique de Roscoff, Sorbonne Université, CNRS, UMR 7144, Adaptation et Diversité en Milieu Marin, Place G. Teissier, 29680, Roscoff, France
| | - Nathalie Jouy
- UMS 2014-US 41- PLBS- Plateforme Lilloise en Biologie & Santé, BioImaging Center Lille (BICeL), Univ, Lille, France
| | - Stéphane Hourdez
- Observatoire Oceanologique de Banyuls-sur-Mer, UMR 8222, CNRS-SU Laboratoire d'Ecogéochimie des Environnements Benthiques, avenue Pierre Fabre, 66650, Banyuls-sur-mer, France
| | - Aurélie Tasiemski
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000, Lille, France
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Coates CJ, Belato FA, Halanych KM, Costa-Paiva EM. Structure-Function Relationships of Oxygen Transport Proteins in Marine Invertebrates Enduring Higher Temperatures and Deoxygenation. THE BIOLOGICAL BULLETIN 2022; 243:134-148. [PMID: 36548976 DOI: 10.1086/722472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
AbstractPredictions for climate change-to lesser and greater extents-reveal a common scenario in which marine waters are characterized by a deadly trio of stressors: higher temperatures, lower oxygen levels, and acidification. Ectothermic taxa that inhabit coastal waters, such as shellfish, are vulnerable to rapid and prolonged environmental disturbances, such as heatwaves, pollution-induced eutrophication, and dysoxia. Oxygen transport capacity of the hemolymph (blood equivalent) is considered the proximal driver of thermotolerance and respiration in many invertebrates. Moreover, maintaining homeostasis under environmental duress is inextricably linked to the activities of the hemolymph-based oxygen transport or binding proteins. Several protein groups fulfill this role in marine invertebrates: copper-based extracellular hemocyanins, iron-based intracellular hemoglobins and hemerythrins, and giant extracellular hemoglobins. In this brief text, we revisit the distribution and multifunctional properties of oxygen transport proteins, notably hemocyanins, in the context of climate change, and the consequent physiological reprogramming of marine invertebrates.
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Differential gene expression indicates modulated responses to chronic and intermittent hypoxia in corallivorous fireworms (Hermodice carunculata). Sci Rep 2021; 11:11110. [PMID: 34045547 PMCID: PMC8160350 DOI: 10.1038/s41598-021-90540-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 04/27/2021] [Indexed: 02/04/2023] Open
Abstract
Climate models predict an increase in extent, frequency, and duration of marine hypoxia events in the twenty first century. A better understanding of organismal responses to hypoxia in individual species is a crucial step for predicting ecosystem responses. We experimentally subjected a common invertebrate, the bearded fireworm (Hermodice carunculata) to two levels of chronic hypoxia and, in a separate experiment, to intermittent hypoxia. We found components of the conserved hypoxia-inducible factor (HIF) pathway and show a modulated response to hypoxia depending on the severity of hypoxic stress: under mild hypoxia, only the HIF-1α subunit is upregulated, while expression of the other subunit, aryl hydrocarbon nuclear translator, only increases significantly at more severe hypoxia levels. The chronic trials revealed down-regulation of genes related to cell adhesion, transport, development and heme-binding, and up-regulation of genes related to glycolysis, oxygen binding, cell differentiation, digestive and reproductive function. The intermittent hypoxia trials revealed an upregulation of heme transporter activity during hypoxia, and our time series analysis characterized nine clusters of genes with similar expression patterns. Our findings suggest that H. carunculata is likely to tolerate, and be resilient to, predicted future hypoxia conditions.
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Belato FA, Coates CJ, Halanych KM, Weber RE, Costa-Paiva EM. Evolutionary History of the Globin Gene Family in Annelids. Genome Biol Evol 2020; 12:1719-1733. [PMID: 32597988 PMCID: PMC7549130 DOI: 10.1093/gbe/evaa134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2020] [Indexed: 12/20/2022] Open
Abstract
Animals depend on the sequential oxidation of organic molecules to survive; thus, oxygen-carrying/transporting proteins play a fundamental role in aerobic metabolism. Globins are the most common and widespread group of respiratory proteins. They can be divided into three types: circulating intracellular, noncirculating intracellular, and extracellular, all of which have been reported in annelids. The diversity of oxygen transport proteins has been underestimated across metazoans. We probed 250 annelid transcriptomes in search of globin diversity in order to elucidate the evolutionary history of this gene family within this phylum. We report two new globin types in annelids, namely androglobins and cytoglobins. Although cytoglobins and myoglobins from vertebrates and from invertebrates are referred to by the same name, our data show they are not genuine orthologs. Our phylogenetic analyses show that extracellular globins from annelids are more closely related to extracellular globins from other metazoans than to the intracellular globins of annelids. Broadly, our findings indicate that multiple gene duplication and neo-functionalization events shaped the evolutionary history of the globin family.
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Affiliation(s)
- Flávia A Belato
- Department of Zoology, Institute of Biosciences, University of Sao Paulo, Brazil
| | - Christopher J Coates
- Department of Biosciences, College of Science, Swansea University, United Kingdom
| | - Kenneth M Halanych
- Department of Biological Sciences, Molette Biology Laboratory for Environmental and Climate Change Studies, Auburn University
| | - Roy E Weber
- Zoophysiology, Department of Biology, Aarhus University, Denmark
| | - Elisa M Costa-Paiva
- Department of Zoology, Institute of Biosciences, University of Sao Paulo, Brazil
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Timm B, Abdulmalik O, Chakrabarti A, Elmer J. Purification of Lumbricus terrestris erythrocruorin (LtEc) with anion exchange chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1150:122162. [PMID: 32505113 DOI: 10.1016/j.jchromb.2020.122162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/12/2020] [Accepted: 05/14/2020] [Indexed: 12/11/2022]
Abstract
The naturally extracellular hemoglobin (erythrocruorin) of the Canadian nightcrawler, Lumbricus terrestris (LtEc), is a unique oxygen transport protein that may be an effective substitute for donated human blood. Indeed, this ultra-high molecular weight (~3.6 MDa) hemoglobin has already been shown to avoid the side effects associated with previous hemoglobin-based oxygen carriers and its high thermal stability (Tm = 56°C) and resistance to heme oxidation (kox = 0.04 hr-1 × 103 at 20°C) allow it to be stored for long periods of time without refrigeration. However, before it can be tested in human clinical trials, an effective and scalable purification process for LtEc must be developed. We have previously purified LtEc for animal studies with tangential flow filtration (TFF), which allows rapid and scalable purification of LtEc based on its relatively large size, but that type of size-based purification may not be able to specifically remove some impurities and high MW (>500 kDa) contaminants like endotoxin (MW = ~1-4 MDa). Anion exchange (AEX) and immobilized metal affinity chromatography (IMAC) are two purification methods that have been previously used to purify mammalian hemoglobins, but they have not yet been used to purify large invertebrate hemoglobins like LtEc. Therefore, the goal of this study was to determine if AEX and IMAC resins could successfully purify LtEc from crude earthworm homogenate, while also preserving its macromolecular structure and function. Both processes were able to produce purified LtEc with low levels of endotoxin, but IMAC purification induced significantly higher levels of heme oxidation and subunit dissociation than AEX. In addition, the IMAC process required an additional desalting step to enable LtEc binding. In contrast, AEX produced highly pure LtEc that was not dissociated. LtEc purified by AEX also exhibits similar oxygen binding characteristics (P50 = 27.33 ± 1.82 mm Hg, n = 1.58 ± 0.17) to TFF-purified LtEc (P50 = 28.84 ± 0.40 mm Hg, n = 1.93 ± 0.02). Therefore, AEX appears to be the optimal method for LtEc purification.
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Affiliation(s)
- Brandon Timm
- Department of Chemical and Biological Engineering, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085, USA
| | - Osheiza Abdulmalik
- Div. of Hematology, Abramson Building, The Children's Hospital of Philadelphia, 34th St. and Civic Center Blvd, Philadelphia, PA 19104, USA
| | - Atis Chakrabarti
- Tosoh Bioscience, LLC, 3604 Horizon Drive, King of Prussia, PA 19406, USA
| | - Jacob Elmer
- Department of Chemical and Biological Engineering, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085, USA.
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Zimmerman D, DiIusto M, Dienes J, Abdulmalik O, Elmer JJ. Direct comparison of oligochaete erythrocruorins as potential blood substitutes. Bioeng Transl Med 2017; 2:212-221. [PMID: 29313031 PMCID: PMC5675092 DOI: 10.1002/btm2.10067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 06/14/2017] [Accepted: 06/18/2017] [Indexed: 12/11/2022] Open
Abstract
While many blood substitutes are based on mammalian hemoglobins (e.g., human hemoglobin, HbA), the naturally extracellular hemoglobins of invertebrates (a.k.a. erythrocruorins, Ecs) are intriguing alternative oxygen carriers. Specifically, the erythrocruorin of Lumbricus terrestris has been shown to effectively deliver oxygen in mice and rats without the negative side effects observed with HbA. In this study, the properties of six oligochaete Ecs (Lumbricus terrestris, Eisenia hortensis, Eisenia fetida, Eisenia veneta, Eudrilus eugeniae, and Amynthas gracilis) were compared in vitro to identify the most promising blood substitute candidate(s). Several metrics were used to compare the Ecs, including their oxidation rates, dissociation at physiological pH, thermal stability, and oxygen transport characteristics. Overall, the Ecs of Lumbricus terrestris (LtEc) and Eisenia fetida (EfEc) were identified as promising candidates, since they demonstrated high thermal and oligomeric stability, while also exhibiting relatively low oxidation rates. Interestingly, the O2 affinity of LtEc (P50 = 26.25 mmHg at 37 °C) was also observed to be uniquely lower than EfEc and all of the other Ecs (P50 = 9.29–13.62 mmHg). Subsequent alignment of the primary sequences of LtEc and EfEc revealed several significant amino acid substitutions within the D subunit interfaces that may be responsible for this significant change in O2 affinity. Nonetheless, these results show that LtEc and EfEc are promising potential blood substitutes that are resistant to oxidation and denaturation, but additional experiments will need to be conducted to determine their safety, efficacy, and the effects of their disparate oxygen affinities in vivo.
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Affiliation(s)
- Devon Zimmerman
- Dept. of Chemical Engineering Villanova University 800 East Lancaster Avenue Villanova PA 19085
| | - Matthew DiIusto
- Dept. of Chemical Engineering Villanova University 800 East Lancaster Avenue Villanova PA 19085
| | - Jack Dienes
- Dept. of Chemical Engineering Villanova University 800 East Lancaster Avenue Villanova PA 19085
| | - Osheiza Abdulmalik
- Div. of Hematology, Abramson Building The Children's Hospital of Philadelphia 34th St. & Civic Center Blvd Philadelphia PA 19104
| | - Jacob J Elmer
- Dept. of Chemical Engineering Villanova University 800 East Lancaster Avenue Villanova PA 19085
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Tasiemski A, Jung S, Boidin-Wichlacz C, Jollivet D, Cuvillier-Hot V, Pradillon F, Vetriani C, Hecht O, Sönnichsen FD, Gelhaus C, Hung CW, Tholey A, Leippe M, Grötzinger J, Gaill F. Characterization and function of the first antibiotic isolated from a vent organism: the extremophile metazoan Alvinella pompejana. PLoS One 2014; 9:e95737. [PMID: 24776651 PMCID: PMC4002450 DOI: 10.1371/journal.pone.0095737] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 03/30/2014] [Indexed: 01/06/2023] Open
Abstract
The emblematic hydrothermal worm Alvinella pompejana is one of the most thermo tolerant animal known on Earth. It relies on a symbiotic association offering a unique opportunity to discover biochemical adaptations that allow animals to thrive in such a hostile habitat. Here, by studying the Pompeii worm, we report on the discovery of the first antibiotic peptide from a deep-sea organism, namely alvinellacin. After purification and peptide sequencing, both the gene and the peptide tertiary structures were elucidated. As epibionts are not cultivated so far and because of lethal decompression effects upon Alvinella sampling, we developed shipboard biological assays to demonstrate that in addition to act in the first line of defense against microbial invasion, alvinellacin shapes and controls the worm's epibiotic microflora. Our results provide insights into the nature of an abyssal antimicrobial peptide (AMP) and into the manner in which an extremophile eukaryote uses it to interact with the particular microbial community of the hydrothermal vent ecosystem. Unlike earlier studies done on hydrothermal vents that all focused on the microbial side of the symbiosis, our work gives a view of this interaction from the host side.
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Affiliation(s)
- Aurélie Tasiemski
- Université de Lille1-CNRS UMR8198, Laboratoire GEPV, Ecoimmunology of Marine Annelids (EMA), Villeneuve d'Ascq, France
| | - Sascha Jung
- Institute of Biochemistry, Christian-Albrechts-Universität, Kiel, Germany
| | - Céline Boidin-Wichlacz
- Université de Lille1-CNRS UMR8198, Laboratoire GEPV, Ecoimmunology of Marine Annelids (EMA), Villeneuve d'Ascq, France
| | - Didier Jollivet
- Université Pierre et Marie Curie-CNRS UMR7144, Laboratoire AD2M, Adaptation et Biologie des Invertébrés en Conditions Extrêmes (ABICE), Station Biologique, Roscoff, France
| | - Virginie Cuvillier-Hot
- Université de Lille1-CNRS UMR8198, Laboratoire GEPV, Ecoimmunology of Marine Annelids (EMA), Villeneuve d'Ascq, France
| | | | - Costantino Vetriani
- Department of Biochemistry and Microbiology and Institute of Marine and Coastal Sciences, Rutgers University, New Brunswick, New Jersey, United States of America
| | - Oliver Hecht
- Institute of Biochemistry, Christian-Albrechts-Universität, Kiel, Germany
| | - Frank D. Sönnichsen
- Otto Diels Institute for Organic Chemistry, Christian-Albrechts-Universität, Kiel, Germany
| | - Christoph Gelhaus
- Institute of Zoology, Zoophysiology, Christian-Albrechts-Universität, Kiel, Germany
| | - Chien-Wen Hung
- Division of Systematic Proteome Research, Institute for Experimental Medicine, Christian-Albrechts-Universität, Kiel, Germany
| | - Andreas Tholey
- Division of Systematic Proteome Research, Institute for Experimental Medicine, Christian-Albrechts-Universität, Kiel, Germany
| | - Matthias Leippe
- Institute of Zoology, Zoophysiology, Christian-Albrechts-Universität, Kiel, Germany
| | - Joachim Grötzinger
- Institute of Biochemistry, Christian-Albrechts-Universität, Kiel, Germany
| | - Françoise Gaill
- Université Pierre et Marie Curie-Muséum National d'Histoires Naturelles CNRS BOREA IRD, Paris, France
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Jollivet D, Mary J, Gagnière N, Tanguy A, Fontanillas E, Boutet I, Hourdez S, Segurens B, Weissenbach J, Poch O, Lecompte O. Proteome adaptation to high temperatures in the ectothermic hydrothermal vent Pompeii worm. PLoS One 2012; 7:e31150. [PMID: 22348046 PMCID: PMC3277501 DOI: 10.1371/journal.pone.0031150] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Accepted: 01/03/2012] [Indexed: 12/19/2022] Open
Abstract
Taking advantage of the massive genome sequencing effort made on thermophilic prokaryotes, thermal adaptation has been extensively studied by analysing amino acid replacements and codon usage in these unicellular organisms. In most cases, adaptation to thermophily is associated with greater residue hydrophobicity and more charged residues. Both of these characteristics are positively correlated with the optimal growth temperature of prokaryotes. In contrast, little information has been collected on the molecular 'adaptive' strategy of thermophilic eukaryotes. The Pompeii worm A. pompejana, whose transcriptome has recently been sequenced, is currently considered as the most thermotolerant eukaryote on Earth, withstanding the greatest thermal and chemical ranges known. We investigated the amino-acid composition bias of ribosomal proteins in the Pompeii worm when compared to other lophotrochozoans and checked for putative adaptive changes during the course of evolution using codon-based Maximum likelihood analyses. We then provided a comparative analysis of codon usage and amino-acid replacements from a greater set of orthologous genes between the Pompeii worm and Paralvinella grasslei, one of its closest relatives living in a much cooler habitat. Analyses reveal that both species display the same high GC-biased codon usage and amino-acid patterns favoring both positively-charged residues and protein hydrophobicity. These patterns may be indicative of an ancestral adaptation to the deep sea and/or thermophily. In addition, the Pompeii worm displays a set of amino-acid change patterns that may explain its greater thermotolerance, with a significant increase in Tyr, Lys and Ala against Val, Met and Gly. Present results indicate that, together with a high content in charged residues, greater proportion of smaller aliphatic residues, and especially alanine, may be a different path for metazoans to face relatively 'high' temperatures and thus a novelty in thermophilic metazoans.
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Affiliation(s)
- Didier Jollivet
- Adaptation & Diversité en Milieu Marin, CNRS UMR 7144, Roscoff, France.
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Gagnière N, Jollivet D, Boutet I, Brélivet Y, Busso D, Da Silva C, Gaill F, Higuet D, Hourdez S, Knoops B, Lallier F, Leize-Wagner E, Mary J, Moras D, Perrodou E, Rees JF, Segurens B, Shillito B, Tanguy A, Thierry JC, Weissenbach J, Wincker P, Zal F, Poch O, Lecompte O. Insights into metazoan evolution from Alvinella pompejana cDNAs. BMC Genomics 2010; 11:634. [PMID: 21080938 PMCID: PMC3018142 DOI: 10.1186/1471-2164-11-634] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2010] [Accepted: 11/16/2010] [Indexed: 11/29/2022] Open
Abstract
Background Alvinella pompejana is a representative of Annelids, a key phylum for evo-devo studies that is still poorly studied at the sequence level. A. pompejana inhabits deep-sea hydrothermal vents and is currently known as one of the most thermotolerant Eukaryotes in marine environments, withstanding the largest known chemical and thermal ranges (from 5 to 105°C). This tube-dwelling worm forms dense colonies on the surface of hydrothermal chimneys and can withstand long periods of hypo/anoxia and long phases of exposure to hydrogen sulphides. A. pompejana specifically inhabits chimney walls of hydrothermal vents on the East Pacific Rise. To survive, Alvinella has developed numerous adaptations at the physiological and molecular levels, such as an increase in the thermostability of proteins and protein complexes. It represents an outstanding model organism for studying adaptation to harsh physicochemical conditions and for isolating stable macromolecules resistant to high temperatures. Results We have constructed four full length enriched cDNA libraries to investigate the biology and evolution of this intriguing animal. Analysis of more than 75,000 high quality reads led to the identification of 15,858 transcripts and 9,221 putative protein sequences. Our annotation reveals a good coverage of most animal pathways and networks with a prevalence of transcripts involved in oxidative stress resistance, detoxification, anti-bacterial defence, and heat shock protection. Alvinella proteins seem to show a slow evolutionary rate and a higher similarity with proteins from Vertebrates compared to proteins from Arthropods or Nematodes. Their composition shows enrichment in positively charged amino acids that might contribute to their thermostability. The gene content of Alvinella reveals that an important pool of genes previously considered to be specific to Deuterostomes were in fact already present in the last common ancestor of the Bilaterian animals, but have been secondarily lost in model invertebrates. This pool is enriched in glycoproteins that play a key role in intercellular communication, hormonal regulation and immunity. Conclusions Our study starts to unravel the gene content and sequence evolution of a deep-sea annelid, revealing key features in eukaryote adaptation to extreme environmental conditions and highlighting the proximity of Annelids and Vertebrates.
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Affiliation(s)
- Nicolas Gagnière
- Department of Structural Biology and Genomics, Institut de Génétique et de Biologie Moléculaire et Cellulaire, CERBM F-67400 Illkirch, France
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Boutet I, Jollivet D, Shillito B, Moraga D, Tanguy A. Molecular identification of differentially regulated genes in the hydrothermal-vent species Bathymodiolus thermophilus and Paralvinella pandorae in response to temperature. BMC Genomics 2009; 10:222. [PMID: 19439073 PMCID: PMC2689276 DOI: 10.1186/1471-2164-10-222] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2008] [Accepted: 05/13/2009] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Hydrothermal vents and cold seeps represent oases of life in the deep-sea environment, but are also characterized by challenging physical and chemical conditions. The effect of temperature fluctuations on vent organisms in their habitat has not been well explored, in particular at a molecular level, most gene expression studies being conducted on coastal marine species. In order to better understand the response of hydrothermal organisms to different temperature regimes, differentially expressed genes (obtained by a subtractive suppression hybridization approach) were identified in the mussel Bathymodiolus thermophilus and the annelid Paralvinella pandorae irlandei to characterize the physiological processes involved when animals are subjected to long term exposure (2 days) at two contrasting temperatures (10 degrees versus 20 degrees C), while maintained at in situ pressures. To avoid a potential effect of pressure, the experimental animals were initially thermally acclimated for 24 hours in a pressurized vessel. RESULTS For each species, we produced two subtractive cDNA libraries (forward and reverse) from sets of deep-sea mussels and annelids exposed together to a thermal challenge under pressure. RNA extracted from the gills, adductor muscle, mantle and foot tissue were used for B. thermophilus. For the annelid model, whole animals (small individuals) were used. For each of the four libraries, we sequenced 200 clones, resulting in 78 and 83 unique sequences in mussels and annelids (about 20% of the sequencing effort), respectively, with only half of them corresponding to known genes. Real-time PCR was used to validate differentially expressed genes identified in the corresponding libraries. Strong expression variations have been observed for some specific genes such as the intracellular hemoglobin, the nidogen protein, and Rab7 in P. pandorae, and the SPARC protein, cyclophilin, foot protein and adhesive plaque protein in B. thermophilus. CONCLUSION Our results indicate that mussels and worms are not responding in the same way to temperature variations. While the results obtained for the mussel B. thermophilus seem to indicate a metabolic depression (strong decrease in the level of mRNA expression of numerous genes) when temperature increased, the annelid P. pandorae mainly displayed a strong regulation of the mRNA encoding subunits and linkers of respiratory pigments and some proteins involved in membrane structure. In both cases, these regulations seem to be partly due to a possible cellular oxidative stress induced by the simulated thermal environment (10 degrees C to 20 degrees C). This work will serve as a starting point for studying the transcriptomic response of hydrothermal mussels and annelids in future experiments in response to thermal stress at various conditions of duration and temperature challenge.
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Affiliation(s)
- Isabelle Boutet
- CNRS, UMR 7144, Adaptation et Diversité en Milieu Marin, Station Biologique, de Roscoff, 29682 Roscoff, France
- UPMC Univ Paris 06, UMR 7144, Equipe Génétique et Adaptation en Milieu Extrême, Station Biologique de Roscoff, 29682 Roscoff, France
| | - Didier Jollivet
- CNRS, UMR 7144, Adaptation et Diversité en Milieu Marin, Station Biologique, de Roscoff, 29682 Roscoff, France
- UPMC Univ Paris 06, UMR 7144, Equipe Génétique et Adaptation en Milieu Extrême, Station Biologique de Roscoff, 29682 Roscoff, France
| | - Bruce Shillito
- UPMC Université Paris 6, UMR 7138, Systématique, Adaptation et Evolution, 75005 Paris, France
| | - Dario Moraga
- UMR CNRS 6539, Laboratoire des Sciences de l'Environnement Marin, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, Place Nicolas Copernic, 29280 Plouzané, France
| | - Arnaud Tanguy
- CNRS, UMR 7144, Adaptation et Diversité en Milieu Marin, Station Biologique, de Roscoff, 29682 Roscoff, France
- UPMC Univ Paris 06, UMR 7144, Equipe Génétique et Adaptation en Milieu Extrême, Station Biologique de Roscoff, 29682 Roscoff, France
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12
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Synthesis of chlorinated fluoresceins for labeling proteins. Bioorg Med Chem Lett 2008; 18:1977-9. [PMID: 18308564 DOI: 10.1016/j.bmcl.2008.01.114] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2007] [Revised: 01/28/2008] [Accepted: 01/30/2008] [Indexed: 11/23/2022]
Abstract
Two novel chlorinated fluoresceins 4,7,2',7'-tetrachloro-6-(5-carboxypentyl)fluorescein (8a) and 4,7,4',5'-tetra-chloro-6-(5-carboxypentyl)fluorescein (8b) were synthesized as fluorescent probes for labeling proteins. These two fluoresceins contain 6-aminohexanoic acid as spacer linker to minimize the fluorescence quenching of the fluorescein molecules by the proteins to be labeled.
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Bailly X, Chabasse C, Hourdez S, Dewilde S, Martial S, Moens L, Zal F. Globin gene family evolution and functional diversification in annelids. FEBS J 2007; 274:2641-52. [PMID: 17451435 DOI: 10.1111/j.1742-4658.2007.05799.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Globins are the most common type of oxygen-binding protein in annelids. In this paper, we show that circulating intracellular globin (Alvinella pompejana and Glycera dibranchiata), noncirculating intracellular globin (Arenicola marina myoglobin) and extracellular globin from various annelids share a similar gene structure, with two conserved introns at canonical positions B12.2 and G7.0. Despite sequence divergence between intracellular and extracellular globins, these data strongly suggest that these three globin types are derived from a common ancestral globin-like gene and evolved by duplication events leading to diversification of globin types and derived functions. A phylogenetic analysis shows a distinct evolutionary history of annelid extracellular hemoglobins with respect to intracellular annelid hemoglobins and mollusc and arthropod extracellular hemoglobins. In addition, dehaloperoxidase (DHP) from the annelid, Amphitrite ornata, surprisingly exhibits close phylogenetic relationships to some annelid intracellular globins. We have characterized the gene structure of A. ornata DHP to confirm assumptions about its homology with globins. It appears that it has the same intron position as in globin genes, suggesting a common ancestry with globins. In A. ornata, DHP may be a derived globin with an unusual enzymatic function.
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Affiliation(s)
- Xavier Bailly
- Equipe Ecophysiologie: Adaptation et Evolution Moléculaires, UPMC, CNRS UMR 7144, Station Biologique, BP 74, Roscoff, France
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Vinogradov SN, Hoogewijs D, Bailly X, Arredondo-Peter R, Gough J, Dewilde S, Moens L, Vanfleteren JR. A phylogenomic profile of globins. BMC Evol Biol 2006; 6:31. [PMID: 16600051 PMCID: PMC1457004 DOI: 10.1186/1471-2148-6-31] [Citation(s) in RCA: 173] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2005] [Accepted: 04/07/2006] [Indexed: 12/26/2022] Open
Abstract
Background Globins occur in all three kingdoms of life: they can be classified into single-domain globins and chimeric globins. The latter comprise the flavohemoglobins with a C-terminal FAD-binding domain and the gene-regulating globin coupled sensors, with variable C-terminal domains. The single-domain globins encompass sequences related to chimeric globins and «truncated» hemoglobins with a 2-over-2 instead of the canonical 3-over-3 α-helical fold. Results A census of globins in 26 archaeal, 245 bacterial and 49 eukaryote genomes was carried out. Only ~25% of archaea have globins, including globin coupled sensors, related single domain globins and 2-over-2 globins. From one to seven globins per genome were found in ~65% of the bacterial genomes: the presence and number of globins are positively correlated with genome size. Globins appear to be mostly absent in Bacteroidetes/Chlorobi, Chlamydia, Lactobacillales, Mollicutes, Rickettsiales, Pastorellales and Spirochaetes. Single domain globins occur in metazoans and flavohemoglobins are found in fungi, diplomonads and mycetozoans. Although red algae have single domain globins, including 2-over-2 globins, the green algae and ciliates have only 2-over-2 globins. Plants have symbiotic and nonsymbiotic single domain hemoglobins and 2-over-2 hemoglobins. Over 90% of eukaryotes have globins: the nematode Caenorhabditis has the most putative globins, ~33. No globins occur in the parasitic, unicellular eukaryotes such as Encephalitozoon, Entamoeba, Plasmodium and Trypanosoma. Conclusion Although Bacteria have all three types of globins, Archaeado not have flavohemoglobins and Eukaryotes lack globin coupled sensors. Since the hemoglobins in organisms other than animals are enzymes or sensors, it is likely that the evolution of an oxygen transport function accompanied the emergence of multicellular animals.
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Affiliation(s)
- Serge N Vinogradov
- Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - David Hoogewijs
- Department of Biology, Ghent University, B-9000 Ghent, Belgium
| | - Xavier Bailly
- Station Biologique de Roscoff, 29680 Roscoff, France
| | - Raúl Arredondo-Peter
- Laboratorio de Biofísica y Biología Molecular, Facultad de Ciencias, Universidad Autónoma del Estado de Morelos, 62210 Cuernavaca, Morelos, México
| | - Julian Gough
- RIKEN Genomic Sciences Centre, Yokohama 230-0045, Japan
| | - Sylvia Dewilde
- Department of Biomedical Sciences, University of Antwerp, 2610 Antwerp, Belgium
| | - Luc Moens
- Department of Biomedical Sciences, University of Antwerp, 2610 Antwerp, Belgium
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Weber RE, Hourdez S, Knowles F, Lallier F. Hemoglobin function in deep-sea and hydrothermal-vent endemic fish: Symenchelis parasitica (Anguillidae) and Thermarces cerberus (Zoarcidae). J Exp Biol 2003; 206:2693-702. [PMID: 12819275 DOI: 10.1242/jeb.00475] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Deep-sea hydrothermal vents probably provide the harshest physico-chemical conditions confronting metazoan animals in nature. Given the absence of information on hemoglobin (Hb) function in hydrothermal-vent vertebrates, and the complex molecular and functional adaptations observed in hydrothermal-vent invertebrates, we investigated the oxygenation reactions of Hbs from the vent-endemic zoarcid Thermarces cerberus and the deep-sea anguillid Symenchelis parasitica from adjacent habitats. Electrophoretically cathodic and anodic isoHbs from S. parasitica exhibit radical differences in O(2) affinity and pH and organic phosphate (ATP) sensitivities, reflecting a division of labor as in other 'class II' fish that express both Hb types. Remarkably, the cathodic Hb (I) lacks chloride sensitivity, and the anodic Hb (II) shows anticooperativity near half-saturation at low temperature. T. cerberus isoHbs exhibit similar affinities and pH sensitivities ('class I' pattern) but much higher O(2) affinities than those observed in Hbs of the temperate, shallow-water zoarcid Zoarces viviparus, which, unless compensated, reveals markedly higher blood O(2) affinities in the former species. The temperature sensitivity of O(2) binding to T. cerberus Hbs and the anodic S. parasitica Hb, which have normal Bohr effects, is decreased by endothermic proton dissociation, which reduces the effects of ambient temperature variations on O(2) affinity. In the cathodic S. parasitica Hb, similar reduction appears to be associated with endothermic conformational changes that accompany the oxygenation reaction.
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Affiliation(s)
- Roy E Weber
- Department of Zoophysiology, C.F. Møllers Alle, Building 131, University of Aarhus, DK 8000 Aarhus C, Denmark.
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Magnusson WE. On the presentation of statistical tests of place: the importance of editorial consistency. Physiol Biochem Zool 2001; 74:616-8. [PMID: 11436146 DOI: 10.1086/322163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2001] [Indexed: 11/03/2022]
Affiliation(s)
- W E Magnusson
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia, CP 478, 69011-970 Manaus AM, Brazil.
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Abstract
Hemoglobin (Hb) occurs in all the kingdoms of living organisms. Its distribution is episodic among the nonvertebrate groups in contrast to vertebrates. Nonvertebrate Hbs range from single-chain globins found in bacteria, algae, protozoa, and plants to large, multisubunit, multidomain Hbs found in nematodes, molluscs and crustaceans, and the giant annelid and vestimentiferan Hbs comprised of globin and nonglobin subunits. Chimeric hemoglobins have been found recently in bacteria and fungi. Hb occurs intracellularly in specific tissues and in circulating red blood cells (RBCs) and freely dissolved in various body fluids. In addition to transporting and storing O(2) and facilitating its diffusion, several novel Hb functions have emerged, including control of nitric oxide (NO) levels in microorganisms, use of NO to control the level of O(2) in nematodes, binding and transport of sulfide in endosymbiont-harboring species and protection against sulfide, scavenging of O(2 )in symbiotic leguminous plants, O(2 )sensing in bacteria and archaebacteria, and dehaloperoxidase activity useful in detoxification of chlorinated materials. This review focuses on the extensive variation in the functional properties of nonvertebrate Hbs, their O(2 )binding affinities, their homotropic interactions (cooperativity), and the sensitivities of these parameters to temperature and heterotropic effectors such as protons and cations. Whenever possible, it attempts to relate the ligand binding properties to the known molecular structures. The divergent and convergent evolutionary trends evident in the structures and functions of nonvertebrate Hbs appear to be adaptive in extending the inhabitable environment available to Hb-containing organisms.
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Affiliation(s)
- R E Weber
- Danish Centre for Respiratory Adaptation, Department of Zoophysiology, Institute of Biology, University of Aarhus, Aarhus, Denmark.
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