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Burioli EAV, Hammel M, Vignal E, Vidal-Dupiol J, Mitta G, Thomas F, Bierne N, Destoumieux-Garzón D, Charrière GM. Transcriptomics of mussel transmissible cancer MtrBTN2 suggests accumulation of multiple cancer traits and oncogenic pathways shared among bilaterians. Open Biol 2023; 13:230259. [PMID: 37816387 PMCID: PMC10564563 DOI: 10.1098/rsob.230259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/12/2023] [Indexed: 10/12/2023] Open
Abstract
Transmissible cancer cell lines are rare biological entities giving rise to diseases at the crossroads of cancer and parasitic diseases. These malignant cells have acquired the amazing capacity to spread from host to host. They have been described only in dogs, Tasmanian devils and marine bivalves. The Mytilus trossulus bivalve transmissible neoplasia 2 (MtrBTN2) lineage has even acquired the capacity to spread inter-specifically between marine mussels of the Mytilus edulis complex worldwide. To identify the oncogenic processes underpinning the biology of these atypical cancers we performed transcriptomics of MtrBTN2 cells. Differential expression, enrichment, protein-protein interaction network, and targeted analyses were used. Overall, our results suggest the accumulation of multiple cancerous traits that may be linked to the long-term evolution of MtrBTN2. We also highlight that vertebrate and lophotrochozoan cancers could share a large panel of common drivers, which supports the hypothesis of an ancient origin of oncogenic processes in bilaterians.
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Affiliation(s)
- E A V Burioli
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - M Hammel
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - E Vignal
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - J Vidal-Dupiol
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - G Mitta
- IFREMER, UMR 241 Écosystèmes Insulaires Océaniens, Labex Corail, Centre Ifremer du Pacifique, Tahiti, Polynésie française
| | - F Thomas
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - N Bierne
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - D Destoumieux-Garzón
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - G M Charrière
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
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2
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Bouras H, Quesnelle Y, Barozet A, Goux D, Blin JL, Savary M, Zatylny-Gaudin C, Houssin M. First isolation of Francisella halioticida strains from blue mussel (Mytilus edulis) in Normandy, France. J Invertebr Pathol 2023; 200:107950. [PMID: 37301277 DOI: 10.1016/j.jip.2023.107950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 04/26/2023] [Accepted: 06/02/2023] [Indexed: 06/12/2023]
Abstract
Mass mortality events affecting the blue mussels Mytilus edulis have been observed in France since 2014. The DNA of the bacterium Francisella halioticida, reported as pathogen of giant abalone (Haliotis gigantea) and Yesso scallop (Mizuhopecten yessoensis) has been detected recently in mussels from areas suffering mortalities. Isolation of this bacterium was attempted from individuals collected during mortality events. Identification was performed by 16S rRNA gene sequencing, real-time specific PCR and MALDI-ToF using spectra produced from the strain 8472-13A isolated from diseased Yesso scallop in Canada. Five isolates were identified as F. halioticida by real-time specific PCR and 16S rRNA sequencing. MALDI-ToF allowed the direct identification of four isolates (FR22a,b,c,d) which had 100% identity on the 16S rRNA gene with the known strains. On the other hand, one isolate (FR21) was not recognized by MALDI-ToF and had 99.9% identity on the 16S rRNA gene. The FR22 isolates showed difficult growth and required media optimization, which was not the case with the FR21 isolate. For these reasons, it was hypothesized that two type strains are present on French coasts, named FR21 and FR22. The FR21 isolate was selected for phenotypic analysis (growth curve, biochemical characteristics, electron microscopy), phylogenetic analysis and an experimental challenge. This isolate showed distinct differences compared to published F. halioticida strains, both at phenotypic and genotypic levels. Experimental infections of adult mussels led to 36% mortalities in 23 days following intramuscular injection with 3 × 107 CFU while a lower dose (3 × 103 CFU) did not lead to significant mortalities. In the context of this study, the strain FR21 was not virulent towards adult mussels.
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Affiliation(s)
- Hélène Bouras
- Université de Caen-Normandie, Sorbonne Université, MNHN, UA, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Esplanade de la Paix, 14032 Caen, France; LABÉO, Research department; 1 Route de Rosel, 14053 Caen Cedex 4, France.
| | - Yann Quesnelle
- LABÉO, Research department; 1 Route de Rosel, 14053 Caen Cedex 4, France
| | - Alix Barozet
- LABÉO, Research department; 1 Route de Rosel, 14053 Caen Cedex 4, France
| | - Didier Goux
- Normandie Université, UNICAEN, CMAbio3 (Centre de Microscopie Appliquée à la Biologie), SF EMerode, Esplanade de la Paix, 14032 Caen, France; Normandie Université, ENSICAEN, UNICAEN, CNRS, UMR 6508 CRISMAT, 6 boulevard du Maréchal Juin, 14000 Caen, France
| | - Jean-Louis Blin
- Synergie Mer et Littoral (SMEL), Zone Conchylicole, Blainville-sur-mer, France
| | - Manuel Savary
- Comité Régional de Conchyliculture (CRC) Normandie-Mer du Nord, 35 rue du littoral, 50560 Gouville-sur-Mer, France
| | - Céline Zatylny-Gaudin
- Université de Caen-Normandie, Sorbonne Université, MNHN, UA, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Esplanade de la Paix, 14032 Caen, France
| | - Maryline Houssin
- Université de Caen-Normandie, Sorbonne Université, MNHN, UA, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Esplanade de la Paix, 14032 Caen, France; LABÉO, Research department; 1 Route de Rosel, 14053 Caen Cedex 4, France
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3
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Corrochano-Fraile A, Davie A, Carboni S, Bekaert M. Evidence of multiple genome duplication events in Mytilus evolution. BMC Genomics 2022; 23:340. [PMID: 35501689 PMCID: PMC9063065 DOI: 10.1186/s12864-022-08575-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 04/20/2022] [Indexed: 12/12/2022] Open
Abstract
Background Molluscs remain one significantly under-represented taxa amongst available genomic resources, despite being the second-largest animal phylum and the recent advances in genomes sequencing technologies and genome assembly techniques. With the present work, we want to contribute to the growing efforts by filling this gap, presenting a new high-quality reference genome for Mytilus edulis and investigating the evolutionary history within the Mytilidae family, in relation to other species in the class Bivalvia. Results Here we present, for the first time, the discovery of multiple whole genome duplication events in the Mytilidae family and, more generally, in the class Bivalvia. In addition, the calculation of evolution rates for three species of the Mytilinae subfamily sheds new light onto the taxa evolution and highlights key orthologs of interest for the study of Mytilus species divergences. Conclusions The reference genome presented here will enable the correct identification of molecular markers for evolutionary, population genetics, and conservation studies. Mytilidae have the capability to become a model shellfish for climate change adaptation using genome-enabled systems biology and multi-disciplinary studies of interactions between abiotic stressors, pathogen attacks, and aquaculture practises. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08575-9.
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Affiliation(s)
- Ana Corrochano-Fraile
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK
| | - Andrew Davie
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK
| | - Stefano Carboni
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK. .,International Marine Centre, Loc. Sa Mardini snc, 09170, Torre Grande, OR, Italy.
| | - Michaël Bekaert
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK
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4
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Hammel M, Simon A, Arbiol C, Villalba A, Burioli EAV, Pépin JF, Lamy JB, Benabdelmouna A, Bernard I, Houssin M, Charrière G, Destoumieux-Garzon D, Welch J, Metzger MJ, Bierne N. Prevalence and polymorphism of a mussel transmissible cancer in Europe. Mol Ecol 2022; 31:736-751. [PMID: 34192383 PMCID: PMC8716645 DOI: 10.1111/mec.16052] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/03/2021] [Accepted: 06/21/2021] [Indexed: 02/06/2023]
Abstract
Transmissible cancers are parasitic malignant cell lineages that have acquired the ability to infect new hosts from the same species, or sometimes related species. First described in dogs and Tasmanian devils, transmissible cancers were later discovered in some marine bivalves affected by a leukaemia-like disease. In Mytilus mussels, two lineages of bivalve transmissible neoplasia (BTN) have been described to date (MtrBTN1 and MtrBTN2), both of which emerged in a Mytilus trossulus founder individual. Here, we performed extensive screening of genetic chimerism, a hallmark of transmissible cancer, by genotyping 106 single nucleotide polymorphisms of 5,907 European Mytilus mussels. Genetic analysis allowed us to simultaneously obtain the genotype of hosts - Mytilus edulis, M. galloprovincialis or hybrids - and the genotype of tumours of heavily infected individuals. In addition, a subset of 222 individuals were systematically genotyped and analysed by histology to screen for possible nontransmissible cancers. We detected MtrBTN2 at low prevalence in M. edulis, and also in M. galloprovincialis and hybrids although at a much lower prevalence. No MtrBTN1 or new BTN were found, but eight individuals with nontransmissible neoplasia were observed at a single polluted site on the same sampling date. We observed a diversity of MtrBTN2 genotypes that appeared more introgressed or more ancestral than MtrBTN1 and reference healthy M. trossulus individuals. The observed polymorphism is probably due to somatic null alleles caused by structural variations or point mutations in primer-binding sites leading to enhanced detection of the host alleles. Despite low prevalence, two sublineages divergent by 10% fixed somatic null alleles and one nonsynonymous mtCOI (mitochondrial cytochrome oxidase I) substitution are cospreading in the same geographical area, suggesting a complex diversification of MtrBTN2 since its emergence and host species shift.
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Affiliation(s)
- Maurine Hammel
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier,
France,IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan,
Via Domitia, France
| | - Alexis Simon
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier,
France
| | | | - Antonio Villalba
- Centro de Investigacións Mariñas,
Consellería do Mar, Xunta de Galicia, Vilanova de Arousa, Spain,Departamento de Ciencias de la Vida, Universidad de
Alcalá, Alcalá de Henares, Spain.,Research Centre for Experimental Marine Biology and
Biotechnology (PIE), University of the Basque Country (UPV/EHU), Plentzia, Basque
Country, Spain
| | - Erika AV Burioli
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan,
Via Domitia, France,LABÉO, Caen, France
| | - Jean-François Pépin
- Laboratoire Environnement ressources des Pertuis
Charentais, IFREMER, La Tremblade, France
| | - Jean-Baptiste Lamy
- Santé, Génétique, Microbiologie des
Mollusques, IFREMER, La Tremblade, France
| | | | | | | | | | | | - John Welch
- Department of Genetics, University of Cambridge,
Downing Street, Cambridge, UK
| | | | - Nicolas Bierne
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier,
France
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5
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Baez-Ortega A, Murchison EP. Searching for transmissible cancers among the mussels of Europe. Mol Ecol 2021; 31:719-722. [PMID: 34918407 DOI: 10.1111/mec.16330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 12/01/2022]
Abstract
Transmissible cancers are infectious malignant cell clones that spread among individuals through transfer of living cancer cells. Several such clones have been identified in various species of marine bivalve molluscs, including mussels, clams and cockles. These parasitic cell lineages cause a leukaemia-like disease called disseminated neoplasia, and are presumed to pass between hosts by ingestion of water-borne cancer cells during filter feeding. Although occasional cases of transmissible cancer had previously been identified in mussels of the genus Mytilus in Europe, the number of distinct clones affecting these animals, and their prevalence, was unknown. In this issue of Molecular Ecology, Hammel et al. (2021, 30) present findings from a large-scale screen for transmissible cancer across 5907 European Mytilus mussels. Using a genotyping approach, Hammel et al. searched for signal of genetic chimerism, which can arise due to infection by transmissible cancer cells. The screen detected a previously identified globally distributed mussel transmissible cancer at very low prevalence, and found no evidence of additional contagious clones. A parallel histological screen additionally revealed low prevalence of a nontransmissible form of disseminated neoplasia. By quantifying the burden of disseminated neoplasia in European mussel populations, this study provides strong foundations for future work investigating the origins, evolution and impacts of transmissible cancers in mussels.
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Affiliation(s)
| | - Elizabeth P Murchison
- Transmissible Cancer Group, Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
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6
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Skazina M, Odintsova N, Maiorova M, Ivanova A, Väinölä R, Strelkov P. First description of a widespread Mytilus trossulus-derived bivalve transmissible cancer lineage in M. trossulus itself. Sci Rep 2021; 11:5809. [PMID: 33707525 PMCID: PMC7970980 DOI: 10.1038/s41598-021-85098-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 02/24/2021] [Indexed: 11/30/2022] Open
Abstract
Two lineages of bivalve transmissible neoplasia (BTN), BTN1 and BTN2, are known in blue mussels Mytilus. Both lineages derive from the Pacific mussel M. trossulus and are identified primarily by their unique genotypes of the nuclear gene EF1α. BTN1 is found in populations of M. trossulus from the Northeast Pacific, while BTN2 has been detected in populations of other Mytilus species worldwide but not in M. trossulus itself. Here we examined M. trossulus from the Sea of Japan (Northwest Pacific) for the presence of BTN. Using hemocytology and flow cytometry of the hemolymph, we confirmed the presence of disseminated neoplasia in our specimens. Cancerous mussels possessed the BTN2 EF1α genotype and two mitochondrial haplotypes with different recombinant control regions, similar to that of common BTN2 lineages. This is the first report of BTN2 in its original host species M. trossulus. A comparison of all available BTN and M. trossulus COI sequences suggests a common and recent origin of BTN2 diversity in populations of M. trossulus outside the Northeast Pacific, possibly in the Northwest Pacific.
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Affiliation(s)
- Maria Skazina
- Saint-Petersburg State University, Saint-Petersburg, Russia, 199178.
| | - Nelly Odintsova
- National Scientific Center of Marine Biology of the Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia, 690041
| | - Maria Maiorova
- National Scientific Center of Marine Biology of the Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia, 690041
| | - Angelina Ivanova
- Saint-Petersburg State University, Saint-Petersburg, Russia, 199178
| | - Risto Väinölä
- Finnish Museum of Natural History, University of Helsinki, P. O. Box 17, 00014, Helsinki, Finland
| | - Petr Strelkov
- Saint-Petersburg State University, Saint-Petersburg, Russia, 199178
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7
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Charles M, Villalba A, Meyer G, Trancart S, Lagy C, Bernard I, Houssin M. First detection of Francisella halioticida in mussels Mytilus spp. experiencing mortalities in France. DISEASES OF AQUATIC ORGANISMS 2020; 140:203-208. [PMID: 32815528 DOI: 10.3354/dao03505] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This note describes the first detection of the bacteria Francisella halioticida in mussels Mytilus spp. from locations in Normandy and northern Brittany (France) experiencing high mussel mortalities, while it was not detected in the Bay of St Brieuc (northern Brittany), an area which was not affected by abnormal mussel mortality. The distribution of the bacteria in mussels seems to be restricted to inflammatory granulomas as observed in Yesso scallops Mizuhopecten yessoensis from Canada and Japan. F. halioticida has been identified as being involved in mass (>80%) mortality of abalones Haliotis gigantea in Japan and high (up to 40%) mortality of Yesso scallops Mizuhopecten yessoensis in Canada as well as in lesions reducing marketability of Yesso scallops in Japan. The impact of this bacterium on the health of mussels needs to be investigated in future research, especially since the cause of high mussel mortalities that have been occurring in France for the past few years is still undetermined.
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Affiliation(s)
- Maud Charles
- Normandie Université, Université de Caen Normandie, FRE BOREA, CNRS-2030, IRD-207, MNHN, UPMC, UCN, Esplanade de la Paix, 14032 Caen Cedex 4, France
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8
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Dujon AM, Gatenby RA, Bramwell G, MacDonald N, Dohrmann E, Raven N, Schultz A, Hamede R, Gérard AL, Giraudeau M, Thomas F, Ujvari B. Transmissible Cancers in an Evolutionary Perspective. iScience 2020; 23:101269. [PMID: 32592998 PMCID: PMC7327844 DOI: 10.1016/j.isci.2020.101269] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/02/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023] Open
Abstract
Inter-individual transmission of cancer cells represents an intriguing and unexplored host-pathogen system, with significant ecological and evolutionary ramifications. The pathogen consists of clonal malignant cell lines that spread horizontally as allografts and/or xenografts. Although only nine transmissible cancer lineages in eight host species from both terrestrial and marine environments have been investigated, they exhibit evolutionary dynamics that may provide novel insights into tumor-host interactions particularly in the formation of metastases. Here we present an overview of known transmissible cancers, discuss the necessary and sufficient conditions for cancer transmission, and provide a comprehensive review on the evolutionary dynamics between transmissible cancers and their hosts.
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Affiliation(s)
- Antoine M Dujon
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Robert A Gatenby
- Department of Radiology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Georgina Bramwell
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Nick MacDonald
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Erin Dohrmann
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Nynke Raven
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Aaron Schultz
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia
| | - Rodrigo Hamede
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, TAS 7001, Australia
| | - Anne-Lise Gérard
- CREEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Mathieu Giraudeau
- CREEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Frédéric Thomas
- CREEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Beata Ujvari
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic 3216, Australia; School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, TAS 7001, Australia.
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9
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Yonemitsu MA, Giersch RM, Polo-Prieto M, Hammel M, Simon A, Cremonte F, Avilés FT, Merino-Véliz N, Burioli EAV, Muttray AF, Sherry J, Reinisch C, Baldwin SA, Goff SP, Houssin M, Arriagada G, Vázquez N, Bierne N, Metzger MJ. A single clonal lineage of transmissible cancer identified in two marine mussel species in South America and Europe. eLife 2019; 8:e47788. [PMID: 31686650 PMCID: PMC6831032 DOI: 10.7554/elife.47788] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 09/23/2019] [Indexed: 12/13/2022] Open
Abstract
Transmissible cancers, in which cancer cells themselves act as an infectious agent, have been identified in Tasmanian devils, dogs, and four bivalves. We investigated a disseminated neoplasia affecting geographically distant populations of two species of mussels (Mytilus chilensis in South America and M. edulis in Europe). Sequencing alleles from four loci (two nuclear and two mitochondrial) provided evidence of transmissible cancer in both species. Phylogenetic analysis of cancer-associated alleles and analysis of diagnostic SNPs showed that cancers in both species likely arose in a third species of mussel (M. trossulus), but these cancer cells are independent from the previously identified transmissible cancer in M. trossulus from Canada. Unexpectedly, cancers from M. chilensis and M. edulis are nearly identical, showing that the same cancer lineage affects both. Thus, a single transmissible cancer lineage has crossed into two new host species and has been transferred across the Atlantic and Pacific Oceans and between the Northern and Southern hemispheres.
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Affiliation(s)
| | | | | | - Maurine Hammel
- ISEM, Université de Montpellier, CNRS- EPHE-IRDMontpellierFrance
- IHPE, Université de Montpellier, CNRS-Ifremer-UPVDMontpellierFrance
| | - Alexis Simon
- ISEM, Université de Montpellier, CNRS- EPHE-IRDMontpellierFrance
| | - Florencia Cremonte
- Laboratorio de Parasitología (LAPA)Instituto de Biología de Organismos Marinos (IBIOMAR) (CCT CONICET - CENPAT)Puerto MadrynArgentina
| | - Fernando T Avilés
- Instituto de Ciencias Biomedicas, Facultad de Medicina y Facultad de Ciencias de la VidaUniversidad Andres BelloSantiagoChile
| | - Nicolás Merino-Véliz
- Instituto de Ciencias Biomedicas, Facultad de Medicina y Facultad de Ciencias de la VidaUniversidad Andres BelloSantiagoChile
| | | | | | - James Sherry
- Water Science & Technology DirectorateEnvironment and Climate Change CanadaBurlingtonCanada
| | - Carol Reinisch
- Water Science & Technology DirectorateEnvironment and Climate Change CanadaBurlingtonCanada
| | - Susan A Baldwin
- Chemical and Biological EngineeringUniversity of British ColumbiaVancouverCanada
| | - Stephen P Goff
- Howard Hughes Medical InstituteChevy ChaseUnited States
- Department of Microbiology and ImmunologyColumbia University Medical CenterNew YorkUnited States
- Department of Biochemistry and Molecular BiophysicsColumbia University Medical CenterNew YorkUnited States
| | - Maryline Houssin
- Research and DevelopmentLABÉO Frank DuncombeSaint-ContestFrance
- FRE BOREA, MNHN, UPMC, UCN, CNRS-7208, IRD-207, Université de Caen NormandieCaenFrance
| | - Gloria Arriagada
- Instituto de Ciencias Biomedicas, Facultad de Medicina y Facultad de Ciencias de la VidaUniversidad Andres BelloSantiagoChile
| | - Nuria Vázquez
- Laboratorio de Parasitología (LAPA)Instituto de Biología de Organismos Marinos (IBIOMAR) (CCT CONICET - CENPAT)Puerto MadrynArgentina
| | - Nicolas Bierne
- ISEM, Université de Montpellier, CNRS- EPHE-IRDMontpellierFrance
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10
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Burioli EAV, Trancart S, Simon A, Bernard I, Charles M, Oden E, Bierne N, Houssin M. Implementation of various approaches to study the prevalence, incidence and progression of disseminated neoplasia in mussel stocks. J Invertebr Pathol 2019; 168:107271. [PMID: 31629707 DOI: 10.1016/j.jip.2019.107271] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 10/12/2019] [Accepted: 10/15/2019] [Indexed: 01/11/2023]
Abstract
Marine mussel production is of substantial economic interest in numerous coastal areas worldwide, making crucial the study of pathologies that affect them. Disseminated neoplasia (DN) has recently been suggested to be linked to blue mussel, Mytilus edulis, mortality outbreaks observed in France since 2014, although the evidence remains indirect. In order to improve DN detection and monitoring, we compared the sensitivity of four diagnostic tools, namely haemocytology, histology, flow cytometry, and genetics. Haemocytological examination gave the best results in sensitivity and had the advantage of being non-invasive, allowing disease progression to be followed in affected mussels. Using this approach, we showed that DN progression is usually slow, and we provide evidence of remission events. We observed a high diversity of forms and mitotic features of neoplastic cells located in the vesicular connective tissue but rarely in the haemolymph. Circulating cells occur as four main types but are homogenous in morphology and DNA content within a single individual. Polyploidy proved very high, from 8 N to 18 N. Genetic analysis of haemolymph DNA showed that a Mytilus trossulus genetic signal was associated with almost all the DN cases here diagnosed by haemocytological examination, regardless of the DN type. This result corroborates DN is a transmissible cancer that first originated in a M. trossulus host and subsequently crossed into M. edulis. No pre-neoplastic conditions were detectable. The prevalence of the disease was quite low, which, together with the low morbidity observed in the lab, suggest DN is unlikely to be the direct cause of mortality outbreaks in France.
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Affiliation(s)
| | - S Trancart
- LABÉO, 1 Route de Rosel, 14280 St Contest, France
| | - A Simon
- ISEM, Univ Montpellier, CNRS-EPHE-IRD, Montpellier, France
| | - I Bernard
- Eurêka Modélisation, 13 rue de Kermarquer, Lézardrieux, France
| | - M Charles
- LABÉO, 1 Route de Rosel, 14280 St Contest, France; Université de Caen Normandie, UMR BOREA, MNHN, UPMC, UCBN, CNRS-7208, IRD-207, Esplanade de la Paix, 14000 Caen, France
| | - E Oden
- LABÉO, 1 Route de Rosel, 14280 St Contest, France
| | - N Bierne
- ISEM, Univ Montpellier, CNRS-EPHE-IRD, Montpellier, France
| | - M Houssin
- LABÉO, 1 Route de Rosel, 14280 St Contest, France; Université de Caen Normandie, UMR BOREA, MNHN, UPMC, UCBN, CNRS-7208, IRD-207, Esplanade de la Paix, 14000 Caen, France
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