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Fehsenfeld S, Yoon GR, Quijada-Rodriguez AR, Kandachi-Toujas H, Calosi P, Breton S, Weihrauch D. Short-term exposure to high pCO 2 leads to decreased branchial cytochrome C oxidase activity in the presence of octopamine in a decapod. Comp Biochem Physiol A Mol Integr Physiol 2024; 291:111603. [PMID: 38346534 DOI: 10.1016/j.cbpa.2024.111603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/18/2024]
Abstract
In a recent mechanistic study, octopamine was shown to promote proton transport over the branchial epithelium in green crabs, Carcinus maenas. Here, we follow up on this finding by investigating the involvement of octopamine in an environmental and physiological context that challenges acid-base homeostasis, the response to short-term high pCO2 exposure (400 Pa) in a brackish water environment. We show that hyperregulating green crabs experienced a respiratory acidosis as early as 6 h of exposure to hypercapnia, with a rise in hemolymph pCO2 accompanied by a simultaneous drop of hemolymph pH. The slightly delayed increase in hemolymph HCO3- observed after 24 h helped to restore hemolymph pH to initial values by 48 h. Circulating levels of the biogenic amine octopamine were significantly higher in short-term high pCO2 exposed crabs compared to control crabs after 48 h. Whole animal metabolic rates, intracellular levels of octopamine and cAMP, as well as branchial mitochondrial enzyme activities for complex I + III and citrate synthase were unchanged in posterior gill #7 after 48 h of hypercapnia. However, application of octopamine in gill respirometry experiments suppressed branchial metabolic rate in posterior gills of short-term high pCO2 exposed animals. Furthermore, branchial enzyme activity of cytochrome C oxidase decreased in high pCO2 exposed crabs after 48 h. Our results indicate that hyperregulating green crabs are capable of quickly counteracting a hypercapnia-induced respiratory acidosis. The role of octopamine in the acclimation of green crabs to short-term hypercapnia seems to entail the alteration of branchial metabolic pathways, possibly targeting mitochondrial cytochrome C in the gill. Our findings help advancing our current limited understanding of endocrine components in hypercapnia acclimation. SUMMARY STATEMENT: Acid-base compensation upon short-term high pCO2 exposure in hyperregulating green crabs started after 6 h and was accomplished by 48 h with the involvement of the biogenic amine octopamine, accumulation of hemolymph HCO3-, and regulation of mitochondrial complex IV (cytochrome C oxidase).
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Affiliation(s)
- Sandra Fehsenfeld
- Laboratoire de Physiologie Écologique et Évolutive Marine, Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Canada; Department of Biological Sciences, University of Manitoba, Winnipeg, Canada.
| | - Gwangseok R Yoon
- Department of Biological Sciences, University of Manitoba, Winnipeg, Canada; Department of Biological Sciences, University of Toronto Scarborough, Toronto, Canada
| | - Alex R Quijada-Rodriguez
- Department of Biological Sciences, University of Manitoba, Winnipeg, Canada; Department of Biology, Wilfrid Laurier University, Waterloo, Canada
| | - Haluka Kandachi-Toujas
- Laboratoire de Physiologie Écologique et Évolutive Marine, Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Canada
| | - Piero Calosi
- Laboratoire de Physiologie Écologique et Évolutive Marine, Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Canada
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, Canada
| | - Dirk Weihrauch
- Department of Biological Sciences, University of Manitoba, Winnipeg, Canada
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2
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Breton S. Comparative mitogenomics of Brachiopods reveals conservatism in articulate species and unusualness in inarticulate species. Mol Biol Rep 2024; 51:298. [PMID: 38341808 DOI: 10.1007/s11033-024-09270-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/18/2024] [Indexed: 02/13/2024]
Abstract
BACKGROUND Brachiopods are a phylum of marine invertebrates with over 10,000 fossil species. Today, there are fewer than 500 extant species assigned to the class Articulata or Inarticulata and for which knowledge of evolutionary genetics and genomics is still poor. Until now, complete mitogenome sequences of two inarticulate species and four articulate species were available. METHODS AND RESULTS The complete mitogenome of the inarticulate brachiopod species Lingula reevii (20,778 bp) was obtained by using next generation sequencing. It contains 12 protein-coding genes (the annotation of atp8 is unsure), two ribosomal RNA genes, 26 transfer RNA genes, and one supernumerary ORF that is also conserved in the inarticulate species Lingula anatina. It is hypothesized that this ORF could represent a Lingula-specific mtORFan gene (without obvious homology to other genes). Comparative mitogenomics indicate the mitochondrial gene order of L. reevii is unique among brachiopods, and that compared to articulate species, inarticulate species exhibit massive mitogenome rearrangements, deviant ATP8 protein sequences and supernumerary ORFs, possibly representing species- or lineage-specific mtORFan genes. CONCLUSION The results of this study enrich genetics knowledge of extant brachiopods, which may eventually help to test hypotheses about their decline.
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Affiliation(s)
- Sophie Breton
- Department of Biological Sciences, University of Montreal, Montreal, Canada.
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3
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Hosseini Khorami H, Breton S, Angers A. In vitro proliferation of Mytilus edulis male germ cell progenitors. PLoS One 2024; 19:e0292205. [PMID: 38335194 PMCID: PMC10857695 DOI: 10.1371/journal.pone.0292205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 01/09/2024] [Indexed: 02/12/2024] Open
Abstract
Our understanding of basic cellular processes has mostly been provided by mammalian cell culture, and by some non-mammalian vertebrate and few invertebrate cell culture models. Developing reliable culture conditions for non-model organisms is essential to allow investigation of more unusual cellular processes. Here, we investigate how cells isolated from different tissues of the marine mussel Mytilus edulis thrive and survive in vitro in the hope of establishing a suitable laboratory model for the investigation of cellular mechanisms specific to these bivalve mollusks. We found that cells dissociated from mantle tissue attached to the culture vessels and proliferated well in vitro, whereas cells isolated from gills, although remaining viable, did not maintain divisions over three to four weeks in culture. We used antibodies against the germ-line marker DEAD-box helicase 4 (DDX4), also known as VASA, and the epithelial cell marker cytokeratin to distinguish different cell types in culture. DDX4-positive cells were predominant in 25-day-old cultures from male mantles. Cells from other tissues remained in low numbers and did not seem to change in composition over time. Overall, the culture conditions described here allow an efficient selection of male germ cells that could be used to study specific cellular mechanisms in vitro.
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Affiliation(s)
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, Québec, Canada
| | - Annie Angers
- Département de Sciences Biologiques, Université de Montréal, Montréal, Québec, Canada
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4
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Smith CH, Mejia-Trujillo R, Breton S, Pinto BJ, Kirkpatrick M, Havird JC. Mitonuclear Sex Determination? Empirical Evidence from Bivalves. Mol Biol Evol 2023; 40:msad240. [PMID: 37935058 PMCID: PMC10653589 DOI: 10.1093/molbev/msad240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/04/2023] [Accepted: 10/26/2023] [Indexed: 11/09/2023] Open
Abstract
Genetic elements encoded in nuclear DNA determine the sex of an individual in many animals. In certain bivalve lineages that possess doubly uniparental inheritance (DUI), mitochondrial DNA (mtDNA) has been hypothesized to contribute to sex determination. In these cases, females transmit a female mtDNA to all offspring, while male mtDNA (M mtDNA) is transmitted only from fathers to sons. Because M mtDNA is inherited in the same way as Y chromosomes, it has been hypothesized that mtDNA may be responsible for sex determination. However, the role of mitochondrial and nuclear genes in sex determination has yet to be validated in DUI bivalves. In this study, we used DNA, RNA, and mitochondrial short noncoding RNA (sncRNA) sequencing to explore the role of mitochondrial and nuclear elements in the sexual development pathway of the freshwater mussel Potamilus streckersoni (Bivalvia: Unionida). We found that the M mtDNA sheds a sncRNA partially within a male-specific mitochondrial gene that targets a pathway hypothesized to be involved in female development and mitophagy. RNA-seq confirmed the gene target was significantly upregulated in females, supporting a direct role of mitochondrial sncRNAs in gene silencing. These findings support the hypothesis that M mtDNA inhibits female development. Genome-wide patterns of genetic differentiation and heterozygosity did not support a nuclear sex-determining region, although we cannot reject that nuclear factors are involved with sex determination. Our results provide further evidence that mitochondrial loci contribute to diverse, nonrespiratory functions and additional insights into an unorthodox sex-determining system.
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Affiliation(s)
- Chase H Smith
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
| | | | - Sophie Breton
- Department of Biological Sciences, University of Montreal, Montreal, Canada
| | - Brendan J Pinto
- School of Life Sciences, Arizona State University, Tempe, AZ, USA
- Center for Evolution and Medicine, Arizona State University, Tempe, AZ, USA
- Department of Zoology, Milwaukee Public Museum, Milwaukee, WI, USA
| | - Mark Kirkpatrick
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
| | - Justin C Havird
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
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5
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Debelli A, Kienzle L, Khorami HH, Angers A, Breton S. Validation of the male-specific ORF of the paternally-transmitted mtDNA in Mytilus edulis as a protein-coding gene. Gene 2023; 879:147586. [PMID: 37356740 DOI: 10.1016/j.gene.2023.147586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/14/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
There appears to be an additional set of sex-specific mtDNA-encoded proteins in bivalve species with doubly uniparental mitochondrial inheritance that may be involved in the transmission of the female and male mitogenomes. In the marine mussel Mytilus edulis, the translation of the female-specific open reading frame (F-ORF) was demonstrated but the translation of the male-specific ORF (M-ORF) remains to be shown. Here we validate the male-specific ORF of the paternal mitogenome in M. edulis as a protein-coding gene. The M-ORF protein was detected only in male gonads and localized in sperm mitochondria and acrosome, suggesting that it is involved in a key sperm function in Mytilus edulis.
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Affiliation(s)
- Alizée Debelli
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Laura Kienzle
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Hajar Hosseini Khorami
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Annie Angers
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC H3C 3J7, Canada.
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Battistone MA, Elizagaray ML, Barrachina F, Ottino K, Mendelsohn AC, Breton S. Immunoregulatory mechanisms between epithelial clear cells and mononuclear phagocytes in the epididymis. Andrology 2023:10.1111/andr.13509. [PMID: 37572347 PMCID: PMC10859549 DOI: 10.1111/andr.13509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 08/14/2023]
Abstract
INTRODUCTION One of the most intriguing aspects of male reproductive physiology is the ability of the epididymis to prevent the mounting of immune responses against the onslaught of foreign antigens carried by spermatozoa while initiating very efficient immune responses versus stressors. Epithelial clear cells are strategically positioned to work in a concerted manner with region-specific heterogeneous subsets of mononuclear phagocytes to survey the epididymal barrier and regulate the balance between inflammation and immune tolerance in the post-testicular environment. OBJECTIVE This review aims to describe how clear cells communicate with mononuclear phagocytes to contribute to the unique immune environment in which sperm mature and are stored in the epididymis. MATERIALS/METHODS A comprehensive systematic review was performed. PubMed was searched for articles specific to clear cells, mononuclear phagocytes, and epididymis. Articles that did not specifically address the target material were excluded. RESULTS In this review, we discuss the unexpected roles of clear cells, including the transfer of new proteins to spermatozoa via extracellular vesicles and nanotubes as they transit along the epididymal tubule; and we summarize the immune phenotype, morphology, and antigen capturing, processing, and presenting abilities of mononuclear phagocytes. Moreover, we present the current knowledge of immunoregulatory mechanisms by which clear cells and mononuclear phagocytes may contribute to the immune-privileged environment optimal for sperm maturation and storage. DISCUSSION AND CONCLUSION Notably, we provide an in-depth characterization of clear cell-mononuclear phagocyte communication networks in the steady-state epididymis and in the presence of injury. This review highlights crucial concepts of mucosal immunology and cellcell interactions, all of which are critical but understudied facets of human male reproductive health.
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Affiliation(s)
- MA Battistone
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - ML Elizagaray
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - F Barrachina
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - K Ottino
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - AC Mendelsohn
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - S Breton
- Centre Hospitalier Universitaire de Québec-Research Center, Department of Obstetrics, Gynecology, and Reproduction, Faculty of Medicine, Université Laval, Québec (Québec), Canada
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7
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Le Cam S, Brémaud J, Malkócs T, Kreckelbergh E, Becquet V, Dubillot E, Garcia P, Breton S, Pante E. LAMP-based molecular sexing in a gonochoric marine bivalve ( Macoma balthica rubra) with divergent sex-specific mitochondrial genomes. Ecol Evol 2023; 13:e10320. [PMID: 37636868 PMCID: PMC10450836 DOI: 10.1002/ece3.10320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 08/29/2023] Open
Abstract
Taking advantage of the unique system of doubly uniparental inheritance (DUI) of mitochondria, we developed a reliable molecular method to sex individuals of the marine bivalve Macoma balthica rubra. In species with DUI (~100 known bivalves), both sexes transmit their mitochondria: males bear both a male- and female-type mitogenome, while females bear only the female type. Male and female mitotypes are sufficiently divergent to reliably PCR-amplify them specifically. Loop-mediated isothermal amplification (LAMP) is a precise, economical and portable alternative to PCR for molecular sexing and we demonstrate its application in this context. We used 154 individuals sampled along the Atlantic coast of France and sexed microscopically by gonad examination to test for the congruence among gamete type, PCR sexing and LAMP sexing. We show an exact match among the sexing results from these three methods using the male and female mt-cox1 genes. DUI can be disrupted in inter-specific hybrids, causing unexpected distribution of mitogenomes, such as homoplasmic males or heteroplasmic females. To our knowledge, DUI disruption at the intra-specific scale has never been tested. We applied our sexing protocol to control for unexpected heteroplasmy caused by hybridization between divergent genetic lineages and found no evidence of disruption in the mode of mitochondrial inheritance in M. balthica rubra. We propose LAMP as a useful tool to accelerate eco-evolutionary studies of DUI. It offers the opportunity to investigate the potential role of, previously unaccounted-for, sex-specific patterns such as sexual selection or sex-specific dispersal bias in the evolution of free-spawning benthic species.
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Affiliation(s)
- Sabrina Le Cam
- Laboratoire Littoral Environnement et Sociétés (LIENSs)UMR 7266 CNRS – La Rochelle UniversitéLa RochelleFrance
| | - Julie Brémaud
- Département de sciences biologiquesUniversité de MontréalMontréalQuébecCanada
| | - Tamás Malkócs
- Laboratoire Littoral Environnement et Sociétés (LIENSs)UMR 7266 CNRS – La Rochelle UniversitéLa RochelleFrance
| | - Eugénie Kreckelbergh
- Laboratoire Littoral Environnement et Sociétés (LIENSs)UMR 7266 CNRS – La Rochelle UniversitéLa RochelleFrance
| | - Vanessa Becquet
- Laboratoire Littoral Environnement et Sociétés (LIENSs)UMR 7266 CNRS – La Rochelle UniversitéLa RochelleFrance
| | - Emmanuel Dubillot
- Laboratoire Littoral Environnement et Sociétés (LIENSs)UMR 7266 CNRS – La Rochelle UniversitéLa RochelleFrance
| | - Pascale Garcia
- Laboratoire Littoral Environnement et Sociétés (LIENSs)UMR 7266 CNRS – La Rochelle UniversitéLa RochelleFrance
| | - Sophie Breton
- Département de sciences biologiquesUniversité de MontréalMontréalQuébecCanada
| | - Eric Pante
- Laboratoire des Sciences de l'Environnement Marin (LEMAR)UMR 6539 CNRS‐UBO‐IRD‐Ifremer, Institut Universitaire Européen de la MerPlouzanéFrance
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8
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Smith CH, Mejia-Trujillo R, Breton S, Pinto BJ, Kirkpatrick M, Havird JC. Mitonuclear sex determination? Empirical evidence from bivalves. bioRxiv 2023:2023.07.05.547839. [PMID: 37461691 PMCID: PMC10349986 DOI: 10.1101/2023.07.05.547839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Genetic elements encoded in nuclear DNA determine the sex of an individual in many animals. In bivalves, however, mitochondrial DNA (mtDNA) has been hypothesized to contribute to sex determination in lineages that possess doubly uniparental inheritance (DUI). In these cases, females transmit a female mtDNA (F mtDNA) to all offspring, while male mtDNA (M mtDNA) is transmitted only from fathers to sons. Because M mtDNA is inherited in the same way as Y chromosomes, it has been hypothesized that mtDNA may be responsible for sex determination. However, the role of mitochondrial and nuclear genes in sex determination has yet to be validated in DUI bivalves. In this study, we used DNA, RNA, and mitochondrial short non-coding RNA (sncRNA) sequencing to explore the role of mitochondrial and nuclear elements in the sexual development pathway of the freshwater mussel Potamilus streckersoni (Bivalvia: Unionida). We found that the M mtDNA shed a sncRNA partially within a male-specific mitochondrial gene that targeted pathways hypothesized to be involved in female development and mitophagy. RNA-seq confirmed the gene target was significantly upregulated in females, supporting a direct role of mitochondrial sncRNAs in gene silencing. These findings support the hypothesis that M mtDNA inhibits female development. Genome-wide patterns of genetic differentiation and heterozygosity did not support a nuclear sex determining region, although we cannot reject that nuclear factors are involved with sex determination. Our results provide further evidence that mitochondrial loci contribute to diverse, non-respiratory functions and provide a first glimpse into an unorthodox sex determining system.
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Affiliation(s)
- Chase H. Smith
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
| | | | - Sophie Breton
- Department of Biological Sciences, University of Montreal, Montreal, Canada
| | - Brendan J. Pinto
- School of Life Sciences, Arizona State University, Tempe, AZ USA
- Center for Evolution and Medicine, Arizona State University, Tempe, AZ USA
- Department of Zoology, Milwaukee Public Museum, Milwaukee, WI USA
| | - Mark Kirkpatrick
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
| | - Justin C. Havird
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
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de Rus Jacquet A, Alpaugh M, Denis HL, Tancredi JL, Boutin M, Decaestecker J, Beauparlant C, Herrmann L, Saint-Pierre M, Parent M, Droit A, Breton S, Cicchetti F. The contribution of inflammatory astrocytes to BBB impairments in a brain-chip model of Parkinson's disease. Nat Commun 2023; 14:3651. [PMID: 37339976 DOI: 10.1038/s41467-023-39038-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 05/26/2023] [Indexed: 06/22/2023] Open
Abstract
Astrocyte dysfunction has previously been linked to multiple neurodegenerative disorders including Parkinson's disease (PD). Among their many roles, astrocytes are mediators of the brain immune response, and astrocyte reactivity is a pathological feature of PD. They are also involved in the formation and maintenance of the blood-brain barrier (BBB), but barrier integrity is compromised in people with PD. This study focuses on an unexplored area of PD pathogenesis by characterizing the interplay between astrocytes, inflammation and BBB integrity, and by combining patient-derived induced pluripotent stem cells with microfluidic technologies to generate a 3D human BBB chip. Here we report that astrocytes derived from female donors harboring the PD-related LRRK2 G2019S mutation are pro-inflammatory and fail to support the formation of a functional capillary in vitro. We show that inhibition of MEK1/2 signaling attenuates the inflammatory profile of mutant astrocytes and rescues BBB formation, providing insights into mechanisms regulating barrier integrity in PD. Lastly, we confirm that vascular changes are also observed in the human postmortem substantia nigra of both males and females with PD.
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Affiliation(s)
- A de Rus Jacquet
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada.
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada.
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, 20147, USA.
| | - M Alpaugh
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - H L Denis
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada
| | - J L Tancredi
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, 20147, USA
- Cell Biology R&D, Thermo Fisher Scientific, Frederick, MD, 21704, USA
| | - M Boutin
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
| | - J Decaestecker
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - C Beauparlant
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - L Herrmann
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - M Saint-Pierre
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
| | - M Parent
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada
- CERVO Brain Research Center, Québec, QC, G1E 1T2, Canada
| | - A Droit
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - S Breton
- Centre de Recherche du CHU de Québec - Université Laval, Axe Reproduction, santé de la mère et de l'enfant, Québec, QC, G1V 4G2, Canada
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Université Laval, Québec, QC, G1V 4G2, Canada
| | - F Cicchetti
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada.
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada.
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Kienzle L, Bettinazzi S, Choquette T, Brunet M, Khorami HH, Jacques JF, Moreau M, Roucou X, Landry CR, Angers A, Breton S. A small protein coded within the mitochondrial canonical gene nd4 regulates mitochondrial bioenergetics. BMC Biol 2023; 21:111. [PMID: 37198654 DOI: 10.1186/s12915-023-01609-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 05/03/2023] [Indexed: 05/19/2023] Open
Abstract
BACKGROUND Mitochondria have a central role in cellular functions, aging, and in certain diseases. They possess their own genome, a vestige of their bacterial ancestor. Over the course of evolution, most of the genes of the ancestor have been lost or transferred to the nucleus. In humans, the mtDNA is a very small circular molecule with a functional repertoire limited to only 37 genes. Its extremely compact nature with genes arranged one after the other and separated by short non-coding regions suggests that there is little room for evolutionary novelties. This is radically different from bacterial genomes, which are also circular but much larger, and in which we can find genes inside other genes. These sequences, different from the reference coding sequences, are called alternatives open reading frames or altORFs, and they are involved in key biological functions. However, whether altORFs exist in mitochondrial protein-coding genes or elsewhere in the human mitogenome has not been fully addressed. RESULTS We found a downstream alternative ATG initiation codon in the + 3 reading frame of the human mitochondrial nd4 gene. This newly characterized altORF encodes a 99-amino-acid-long polypeptide, MTALTND4, which is conserved in primates. Our custom antibody, but not the pre-immune serum, was able to immunoprecipitate MTALTND4 from HeLa cell lysates, confirming the existence of an endogenous MTALTND4 peptide. The protein is localized in mitochondria and cytoplasm and is also found in the plasma, and it impacts cell and mitochondrial physiology. CONCLUSIONS Many human mitochondrial translated ORFs might have so far gone unnoticed. By ignoring mtaltORFs, we have underestimated the coding potential of the mitogenome. Alternative mitochondrial peptides such as MTALTND4 may offer a new framework for the investigation of mitochondrial functions and diseases.
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Affiliation(s)
- Laura Kienzle
- Département de sciences biologiques, Université de Montréal, Montréal, Canada
| | - Stefano Bettinazzi
- Département de sciences biologiques, Université de Montréal, Montréal, Canada
| | - Thierry Choquette
- Département de sciences biologiques, Université de Montréal, Montréal, Canada
| | - Marie Brunet
- Service de génétique médicale, Département de pédiatrie, Université de Sherbrooke, Sherbrooke, Canada
- Centre de recherche du Centre hospitalier universitaire de Sherbrooke (CRCHUS), Sherbrooke, Canada
| | | | - Jean-François Jacques
- Département de biochimie et génomique fonctionnelle, Université de Sherbrooke, Sherbrooke, Canada
| | - Mathilde Moreau
- Département de biochimie et génomique fonctionnelle, Université de Sherbrooke, Sherbrooke, Canada
| | - Xavier Roucou
- Centre de recherche du Centre hospitalier universitaire de Sherbrooke (CRCHUS), Sherbrooke, Canada
- Département de biochimie et génomique fonctionnelle, Université de Sherbrooke, Sherbrooke, Canada
| | - Christian R Landry
- Département de biochimie, de microbiologie et de bio-informatique, Faculté des sciences et de génie, Université Laval, Québec, Canada
- Institut de biologie intégrative et des systèmes, Université Laval, Québec, Canada
- PROTEO, Le regroupement québécois de recherche sur la fonction, l'ingénierie et les applications des protéines, Université Laval, Québec, Canada
- Centre de recherche sur les données massives, Université Laval, Québec, Canada
- Département de biologie, Faculté des sciences et de génie, Université Laval, Québec, Canada
| | - Annie Angers
- Département de sciences biologiques, Université de Montréal, Montréal, Canada
| | - Sophie Breton
- Département de sciences biologiques, Université de Montréal, Montréal, Canada.
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Mélançon V, Breton S, Bettinazzi S, Levet M, Binning SA. Mitochondrial enzyme activities and body condition of naturally infected sunfish (Lepomis gibbosus). Physiol Biochem Zool 2023. [DOI: 10.1086/725209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Biot-Pelletier D, Bettinazzi S, Gagnon-Arsenault I, Dubé AK, Bédard C, Nguyen THM, Fiumera HL, Breton S, Landry CR. Evolutionary trajectories are contingent on mitonuclear interactions. Mol Biol Evol 2023; 40:7079771. [PMID: 36929911 PMCID: PMC10072823 DOI: 10.1093/molbev/msad061] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/02/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
Critical mitochondrial functions, including cellular respiration, rely on frequently interacting components expressed from both the mitochondrial and nuclear genomes. The fitness of eukaryotic organisms depends on a tight collaboration between both genomes. In the face of an elevated rate of evolution in mtDNA, current models predict that maintenance of mitonuclear compatibility relies on compensatory evolution of the nuclear genome. Mitonuclear interactions would therefore exert an influence on evolutionary trajectories. One prediction from this model is that the same nuclear genome evolving with different mitochondrial haplotypes would follow distinct molecular paths towards higher fitness. To test this prediction, we submitted 1344 populations derived from seven mitonuclear genotypes of Saccharomyces cerevisiae to more than 300 generations of experimental evolution in conditions that either select for a mitochondrial function, or that do not strictly require respiration for survival. Performing high-throughput phenotyping and whole-genome sequencing on independently evolved individuals, we identified numerous examples of gene-level evolutionary convergence among populations with the same mitonuclear background. Phenotypic and genotypic data on strains derived from this evolution experiment identify the nuclear genome and the environment as the main determinants of evolutionary divergence, but also show a modulating role for the mitochondrial genome exerted both directly and via interactions with the two other components. We finally recapitulated a subset of prominent loss-of-function alleles in the ancestral backgrounds and confirmed a generalized pattern of mitonuclear-specific and highly epistatic fitness effects. Together, these results demonstrate how mitonuclear interactions can dictate evolutionary divergence of populations with identical starting nuclear genotypes.
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Affiliation(s)
- Damien Biot-Pelletier
- Institut de biologie intégrative et des systèmes, Université Laval, Québec QC Canada.,Département de biologie, Université Laval, Québec QC Canada.,Centre de recherche en données massives (CRDM), Université Laval, Québec QC Canada.,PROTEO, le regroupement québécois de recherche sur la fonction, l'ingénierie et les applications des protéines, Université Laval, Québec QC Canada
| | - Stefano Bettinazzi
- Département de sciences biologiques, Université de Montréal, Montréal QC Canada
| | - Isabelle Gagnon-Arsenault
- Institut de biologie intégrative et des systèmes, Université Laval, Québec QC Canada.,Département de biologie, Université Laval, Québec QC Canada.,Centre de recherche en données massives (CRDM), Université Laval, Québec QC Canada.,PROTEO, le regroupement québécois de recherche sur la fonction, l'ingénierie et les applications des protéines, Université Laval, Québec QC Canada.,Département de biochimie, microbiologie et bio-informatique, Université Laval, Québec QC Canada
| | - Alexandre K Dubé
- Institut de biologie intégrative et des systèmes, Université Laval, Québec QC Canada.,Département de biologie, Université Laval, Québec QC Canada.,Centre de recherche en données massives (CRDM), Université Laval, Québec QC Canada.,PROTEO, le regroupement québécois de recherche sur la fonction, l'ingénierie et les applications des protéines, Université Laval, Québec QC Canada.,Département de biochimie, microbiologie et bio-informatique, Université Laval, Québec QC Canada
| | - Camille Bédard
- Institut de biologie intégrative et des systèmes, Université Laval, Québec QC Canada.,Département de biologie, Université Laval, Québec QC Canada.,Centre de recherche en données massives (CRDM), Université Laval, Québec QC Canada.,PROTEO, le regroupement québécois de recherche sur la fonction, l'ingénierie et les applications des protéines, Université Laval, Québec QC Canada
| | - Tuc H M Nguyen
- Department of Biological Sciences, Binghamton University, Binghamton NY USA
| | - Heather L Fiumera
- Department of Biological Sciences, Binghamton University, Binghamton NY USA
| | - Sophie Breton
- Département de sciences biologiques, Université de Montréal, Montréal QC Canada
| | - Christian R Landry
- Institut de biologie intégrative et des systèmes, Université Laval, Québec QC Canada.,Département de biologie, Université Laval, Québec QC Canada.,Centre de recherche en données massives (CRDM), Université Laval, Québec QC Canada.,PROTEO, le regroupement québécois de recherche sur la fonction, l'ingénierie et les applications des protéines, Université Laval, Québec QC Canada.,Département de biochimie, microbiologie et bio-informatique, Université Laval, Québec QC Canada
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13
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Barrachina F, Ottino K, Tu LJ, Soberman RJ, Brown D, Breton S, Battistone MA. CX3CR1 deficiency leads to impairment of immune surveillance in the epididymis. Cell Mol Life Sci 2022; 80:15. [PMID: 36550225 PMCID: PMC9948740 DOI: 10.1007/s00018-022-04664-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/09/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022]
Abstract
Mononuclear phagocytes (MPs) play an active role in the immunological homeostasis of the urogenital tract. In the epididymis, a finely tuned balance between tolerance to antigenic sperm and immune activation is required to maintain epididymal function while protecting sperm against pathogens and stressors. We previously characterized a subset of resident MPs that express the CX3CR1 receptor, emphasizing their role in antigen sampling and processing during sperm maturation and storage in the murine epididymis. Bacteria-associated epididymitis is the most common cause of intrascrotal inflammation and frequently leads to reproductive complications. Here, we examined whether the lack of functional CX3CR1 in homozygous mice (CX3CR1EGFP/EGFP, KO) alters the ability of MPs to initiate immune responses during epididymitis induced by LPS intravasal-epididymal injection. Confocal microscopy revealed that CX3CR1-deficient MPs located in the initial segments of the epididymis displayed fewer luminal-reaching membrane projections and impaired antigen capture activity. Moreover, flow cytometry showed a reduction of epididymal KO MPs with a monocytic phenotype under physiological conditions. In contrast, flow cytometry revealed an increase in the abundance of MPs with a monocytic signature in the distal epididymal segments after an LPS challenge. This was accompanied by the accumulation of CD103+ cells in the interstitium, and the prevention or attenuation of epithelial damage in the KO epididymis during epididymitis. Additionally, CX3CR1 deletion induced downregulation of Gja1 (connexin 43) expression in KO MPs. Together, our study provides evidence that MPs are gatekeepers of the immunological blood-epididymis barrier and reveal the role of the CX3CR1 receptor in epididymal mucosal homeostasis by inducing MP luminal protrusions and by regulating the monocyte population in the epididymis at steady state as well as upon infection. We also uncover the interaction between MPs and CD103+ dendritic cells, presumably through connexin 43, that enhance immune responses during epididymitis. Our study may lead to new diagnostics and therapies for male infertility and epididymitis by identifying immune mechanisms in the epididymis.
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Affiliation(s)
- F Barrachina
- Program in Membrane Biology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
- Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - K Ottino
- Program in Membrane Biology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
- Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - L J Tu
- Program in Membrane Biology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
- Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - R J Soberman
- Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - D Brown
- Program in Membrane Biology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
- Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - S Breton
- Centre Hospitalier Universitaire de Québec-Research Center, Department of Obstetrics, Gynecology, and Reproduction, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - M A Battistone
- Program in Membrane Biology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA.
- Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA.
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Xu R, Martelossi J, Smits M, Iannello M, Peruzza L, Babbucci M, Milan M, Dunham JP, Breton S, Milani L, Nuzhdin SV, Bargelloni L, Passamonti M, Ghiselli F. Multi-tissue RNA-Seq Analysis and Long-read-based Genome Assembly Reveal Complex Sex-specific Gene Regulation and Molecular Evolution in the Manila Clam. Genome Biol Evol 2022; 14:6889380. [PMID: 36508337 PMCID: PMC9803972 DOI: 10.1093/gbe/evac171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 11/26/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
The molecular factors and gene regulation involved in sex determination and gonad differentiation in bivalve molluscs are unknown. It has been suggested that doubly uniparental inheritance (DUI) of mitochondria may be involved in these processes in species such as the ubiquitous and commercially relevant Manila clam, Ruditapes philippinarum. We present the first long-read-based de novo genome assembly of a Manila clam, and a RNA-Seq multi-tissue analysis of 15 females and 15 males. The highly contiguous genome assembly was used as reference to investigate gene expression, alternative splicing, sequence evolution, tissue-specific co-expression networks, and sexual contrasting SNPs. Differential expression (DE) and differential splicing (DS) analyses revealed sex-specific transcriptional regulation in gonads, but not in somatic tissues. Co-expression networks revealed complex gene regulation in gonads, and genes in gonad-associated modules showed high tissue specificity. However, male gonad-associated modules showed contrasting patterns of sequence evolution and tissue specificity. One gene set was related to the structural organization of male gametes and presented slow sequence evolution but high pleiotropy, whereas another gene set was enriched in reproduction-related processes and characterized by fast sequence evolution and tissue specificity. Sexual contrasting SNPs were found in genes overrepresented in mitochondrial-related functions, providing new candidates for investigating the relationship between mitochondria and sex in DUI species. Together, these results increase our understanding of the role of DE, DS, and sequence evolution of sex-specific genes in an understudied taxon. We also provide resourceful genomic data for studies regarding sex diagnosis and breeding in bivalves.
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Affiliation(s)
- Ran Xu
- Corresponding authors: E-mail: (R.X.); E-mail: (F.G.)
| | | | | | | | - Luca Peruzza
- Department of Comparative Biomedicine and Food Science, University of Padova, Padova, Italy
| | - Massimiliano Babbucci
- Department of Comparative Biomedicine and Food Science, University of Padova, Padova, Italy
| | - Massimo Milan
- Department of Comparative Biomedicine and Food Science, University of Padova, Padova, Italy
| | - Joseph P Dunham
- Program in Molecular and Computational Biology, University of Southern California, Los Angeles, CA, USA,SeqOnce Biosciences Inc., Pasadena, CA, USA
| | - Sophie Breton
- Department of Biological Sciences, University of Montreal, Montreal, Canada
| | - Liliana Milani
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Sergey V Nuzhdin
- Program in Molecular and Computational Biology, University of Southern California, Los Angeles, CA, USA
| | - Luca Bargelloni
- Department of Comparative Biomedicine and Food Science, University of Padova, Padova, Italy
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Mahmoud S, Jousse-Joulin S, Saraux A, Dusser P, Borocco C, Galeotti C, Von Scheven A, Hofer M, Bader-Meunier B, Aeschlimann F, Breton S, Sparsa L, Aurélia C, Mouterde G, Rossi-Semerano L, Devauchelle-Pensec V. OP0220 CRITERIA ASSOCIATED WITH TREATMENT DECISIONS IN JUVENILE IDIOPATHIC ARTHRITIS WITH A FOCUS ON ULTRASONOGRAPHY: RESULTS FROM THE JIRECHO COHORT. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundTreatment of children with juvenile idiopathic arthritis (JIA) is a major challenge in paediatric rheumatology. The presence of synovitis, which is difficult to detect in children, is associated with structural damage. Musculoskeletal ultrasonography (MSUS) can be used in JIA patients to reveal subclinical synovitis.ObjectivesOur aim was to determine if the use of MSUS is associated with therapeutic modifications in JIA. Secondary outcomes were to identify other factors associated with therapeutic modifications.MethodsWe conducted an observational study based on the JIRECHO multicentre cohort which was developed to provide a systematic MSUS follow-up for JIA patients. Follow-up occurred every six months and included clinical and US examinations. We included children who underwent MSUS of the elbows, wrists, second metacarpophalangeal joints, knees and ankles. Synovitis in US was defined by the presence of joint effusion and/or synovial hypertrophy in B-mode (≥ grade 1) associated or not with Doppler signals (≥ grade 1). US was performed by expert sonographers with good experience in the field of JIA who previously participated in the study of the reliability of the OMERACT paediatric US synovitis definitions and scoring system in JIA (1). Clinical and biological data, disease activity score and information on therapeutics were collected.ResultsWe included 112 patients with 185 visits in total. Three groups of patients were defined according to their therapeutic status: increased(22%), decreased(14%) or stable(64%) treatment. First, we compared patients with treatment escalation with the other patients. Patients with “increased treatment” had more synovitis in B-mode US than the other patients (80% vs. 65%, p=0.06). There was no difference for the presence of synovitis in Power Doppler (PD) US (30% vs 23%, p=0.4). Patient’s and physician’s visual analogue scale (VAS) scores were significantly higher in patients with therapeutic escalation [3.3 vs 1.7, p<0.01 and 3.6 vs 1.6, p<0.0001] as well as disease activity score and inflammatory biological markers. Then, we compared patients with therapeutic de-escalation with the other patients. There was no difference in the presence of synovitis in US when compared with patients with stable treatment (62% vs. 69%, p=0.5) but there was less synovitis in B-mode ≥ grade 2 (8% vs. 24%, p=0.05).We performed ROC curves analysis that showed that the sensitivity and specificity of the US in B-mode was similar to the physician’s VAS, disease score activity or inflammatory biological markers (Figure 1).Figure 1.ROC curves for clinical and biological items and US in B-mode in patients with « therapeutic escalation »ConclusionIn our study, MSUS of ten joints was not statistically associated with treatment escalation or de-escalation in B-mode and PD in patients with JIA.References[1]Rossi-Semerano, L. et al. Application of the OMERACT synovitis ultrasound scoring system in juvenile idiopathic arthritis: a multicenter reliability exercise. Rheumatol. Oxf. Engl. (2020) doi:10.1093/rheumatology/keaa804.Disclosure of InterestsNone declared
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Tassé M, Choquette T, Angers A, Stewart DT, Pante E, Breton S. The longest mitochondrial protein in metazoans is encoded by the male-transmitted mitogenome of the bivalve Scrobicularia plana. Biol Lett 2022; 18:20220122. [PMID: 35673874 PMCID: PMC9174706 DOI: 10.1098/rsbl.2022.0122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Cytochrome c oxidase subunit II (COX2) is one of the three mitochondrially encoded proteins of the complex IV of the respiratory chain that catalyses the reduction of oxygen to water. The cox2 gene spans about 690 base pairs in most animal species and produces a protein composed of approximately 230 amino acids. We discovered an extreme departure from this pattern in the male-transmitted mitogenome of the bivalve Scrobicularia plana with doubly uniparental inheritance (DUI) of mitochondrial DNA (mtDNA), which possesses an important in-frame insertion of approximately 4.8 kb in its cox2 gene. This feature—an enlarged male cox2 gene—is found in many species with DUI; the COX2 protein can be up to 420 amino acids long. Through RT-PCRs, immunoassays and comparative genetics, the evolution and functionality of this insertion in S. plana were characterized. The in-frame insertion is conserved among individuals from different populations and bears the signature of purifying selection seemingly indicating maintenance of functionality. Its transcription and translation were confirmed: this gene produces a polypeptide of 1892 amino acids, making it the largest metazoan COX2 protein known to date. We hypothesize that these extreme modifications in the COX2 protein affect the metabolism of mitochondria containing the male-transmitted mtDNA in Scrobicularia plana.
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Affiliation(s)
- Mélanie Tassé
- Département de sciences biologiques, Université de Montréal, Montréal, QC, Canada
| | - Thierry Choquette
- Département de sciences biologiques, Université de Montréal, Montréal, QC, Canada
| | - Annie Angers
- Département de sciences biologiques, Université de Montréal, Montréal, QC, Canada
| | | | - Eric Pante
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17000 La Rochelle, France
| | - Sophie Breton
- Département de sciences biologiques, Université de Montréal, Montréal, QC, Canada
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Barrachina F, Battistone MA, Castillo J, Mallofré C, Jodar M, Breton S, Oliva R. Sperm acquire epididymis-derived proteins through epididymosomes. Hum Reprod 2022; 37:651-668. [PMID: 35137089 PMCID: PMC8971652 DOI: 10.1093/humrep/deac015] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 12/30/2021] [Indexed: 02/07/2023] Open
Abstract
STUDY QUESTION Are epididymosomes implicated in protein transfer from the epididymis to spermatozoa? SUMMARY ANSWER We characterized the contribution of epididymal secretions to the sperm proteome and demonstrated that sperm acquire epididymal proteins through epididymosomes. WHAT IS KNOWN ALREADY Testicular sperm are immature cells unable to fertilize an oocyte. After leaving the testis, sperm transit along the epididymis to acquire motility and fertilizing abilities. It is well known that marked changes in the sperm proteome profile occur during epididymal maturation. Since the sperm is a transcriptional and translational inert cell, previous studies have shown that sperm incorporate proteins, RNA and lipids from extracellular vesicles (EVs), released by epithelial cells lining the male reproductive tract. STUDY DESIGN, SIZE, DURATION We examined the contribution of the epididymis to the post-testicular maturation of spermatozoa, via the production of EVs named epididymosomes, released by epididymal epithelial cells. An integrative analysis using both human and mouse data was performed to identify sperm proteins with a potential epididymis-derived origin. Testes and epididymides from adult humans (n = 9) and adult mice (n = 3) were used to experimentally validate the tissue localization of four selected proteins using high-resolution confocal microscopy. Mouse epididymal sperm were co-incubated with carboxyfluorescein succinimidyl ester (CFSE)-labeled epididymosomes (n = 4 mice), and visualized using high-resolution confocal microscopy. PARTICIPANTS/MATERIALS, SETTING, METHODS Adult (12-week-old) C57BL/CBAF1 wild-type male mice and adult humans were used for validation purposes. Testes and epididymides from both mice and humans were obtained and processed for immunofluorescence. Mouse epididymal sperm and mouse epididymosomes were obtained from the epididymal cauda segment. Fluorescent epididymosomes were obtained after labeling the epididymal vesicles with CFSE dye followed by epididymosome isolation using a density cushion. Immunofluorescence was performed following co-incubation of sperm with epididymosomes in vitro. High-resolution confocal microscopy and 3D image reconstruction were used to visualize protein localization and sperm-epididymosomes interactions. MAIN RESULTS AND THE ROLE OF CHANCE Through in silico analysis, we first identified 25 sperm proteins with a putative epididymal origin that were conserved in both human and mouse spermatozoa. From those, the epididymal origin of four sperm proteins (SLC27A2, EDDM3B, KRT19 and WFDC8) was validated by high-resolution confocal microscopy. SLC27A2, EDDM3B, KRT19 and WFDC8 were all detected in epithelial cells lining the human and mouse epididymis, and absent from human and mouse seminiferous tubules. We found region-specific expression patterns of these proteins throughout the mouse epididymides. In addition, while EDDM3B, KRT19 and WFDC8 were detected in both epididymal principal and clear cells (CCs), SLC27A2 was exclusively expressed in CCs. Finally, we showed that CFSE-fluorescently labeled epididymosomes interact with sperm in vitro and about 12-36% of the epididymosomes contain the targeted sperm proteins with an epididymal origin. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION The human and mouse sample size was limited and our results were descriptive. The analyses of epididymal sperm and epididymosomes were solely performed in the mouse model due to the difficulties in obtaining epididymal luminal fluid human samples. Alternatively, human ejaculated sperm and seminal EVs could not be used because ejaculated sperm have already contacted with the fluids secreted by the male accessory sex glands, and seminal EVs contain other EVs in addition to epididymosomes, such as the abundant prostate-derived EVs. WIDER IMPLICATIONS OF THE FINDINGS Our findings indicate that epididymosomes are capable of providing spermatozoa with a new set of epididymis-derived proteins that could modulate the sperm proteome and, subsequently, participate in the post-testicular maturation of sperm cells. Additionally, our data provide further evidence of the novel role of epididymal CCs in epididymosome production. Identifying mechanisms by which sperm mature to acquire their fertilization potential would, ultimately, lead to a better understanding of male reproductive health and may help to identify potential therapeutic strategies to improve male infertility. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the Spanish Ministry of Economy and Competitiveness (Ministerio de Economía y Competividad; fondos FEDER 'una manera de hacer Europa' PI13/00699 and PI16/00346 to R.O.; and Sara Borrell Postdoctoral Fellowship, Acción Estratégica en Salud, CD17/00109 to J.C.), by National Institutes of Health (grants HD040793 and HD069623 to S.B., grant HD104672-01 to M.A.B.), by the Spanish Ministry of Education, Culture and Sports (Ministerio de Educación, Cultura y Deporte para la Formación de Profesorado Universitario, FPU15/02306 to F.B.), by a Lalor Foundation Fellowship (to F.B. and M.A.B.), by the Government of Catalonia (Generalitat de Catalunya, pla estratègic de recerca i innovació en salut, PERIS 2016-2020, SLT002/16/00337 to M.J.), by Fundació Universitària Agustí Pedro i Pons (to F.B.), and by the American Society for Biochemistry and Molecular Biology (PROLAB Award from ASBMB/IUBMB/PABMB to F.B.). Confocal microscopy and transmission electron microscopy was performed in the Microscopy Core facility of the Massachusetts General Hospital (MGH) Center for Systems Biology/Program in Membrane Biology which receives support from Boston Area Diabetes and Endocrinology Research Center (BADERC) award DK57521 and Center for the Study of Inflammatory Bowel Disease grant DK43351. The Zeiss LSM800 microscope was acquired using an NIH Shared Instrumentation Grant S10-OD-021577-01. The authors have no conflicts of interest to declare.
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Affiliation(s)
- F Barrachina
- Molecular Biology of Reproduction and Development Research Group, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Fundació Clínic per a la Recerca Biomèdica, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - M A Battistone
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - J Castillo
- Molecular Biology of Reproduction and Development Research Group, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Fundació Clínic per a la Recerca Biomèdica, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
| | - C Mallofré
- Department of Pathology, Universitat de Barcelona, Hospital Clínic, Barcelona, Spain
| | - M Jodar
- Molecular Biology of Reproduction and Development Research Group, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Fundació Clínic per a la Recerca Biomèdica, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
- Biochemistry and Molecular Genetics Service, Hospital Clínic, Barcelona, Spain
| | - S Breton
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - R Oliva
- Molecular Biology of Reproduction and Development Research Group, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Fundació Clínic per a la Recerca Biomèdica, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
- Biochemistry and Molecular Genetics Service, Hospital Clínic, Barcelona, Spain
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18
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Mouillé M, Rio M, Breton S, Piketty ML, Afenjar A, Amiel J, Capri Y, Goldenberg A, Francannet C, Michot C, Mignot C, Perrin L, Quelin C, Van Gils J, Barcia G, Pingault V, Maruani G, Koumakis E, Cormier-Daire V. SATB2-associated syndrome: characterization of skeletal features and of bone fragility in a prospective cohort of 19 patients. Orphanet J Rare Dis 2022; 17:100. [PMID: 35241104 PMCID: PMC8895909 DOI: 10.1186/s13023-022-02229-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 02/06/2022] [Indexed: 11/10/2022] Open
Abstract
Background Individuals with pathogenic variants in SATB2 display intellectual disability, speech and behavioral disorders, dental abnormalities and often features of Pierre Robin sequence. SATB2 encodes a transcription factor thought to play a role in bone remodeling. The primary aim of our study was to systematically review the skeletal manifestations of SATB2-associated syndrome. For this purpose, we performed a non-interventional, multicenter cohort study, from 2017 to 2018. We included 19 patients, 9 females and 10 males ranging in age from 2 to 19 years-old. The following data were collected prospectively for each patient: clinical data, bone markers and calcium and phosphate metabolism parameters, skeletal X-rays and bone mineral density. Results Digitiform impressions were present in 8/14 patients (57%). Vertebral compression fractures affected 6/17 patients (35%). Skeletal demineralization (16/17, 94%) and cortical thinning of vertebrae (15/17) were the most frequent radiological features at the spine. Long bones were generally demineralized (18/19). The distal phalanges were short, thick and abnormally shaped. C-telopeptide (CTX) and Alkaline phosphatase levels were in the upper normal values and osteocalcin and serum procollagen type 1 amino-terminal propeptide (P1NP) were both increased. Vitamin D insufficiency was frequent (66.7%). Conclusion We conclude that SATB2 pathogenic variants are responsible for skeletal demineralization and osteoporosis. We found increased levels of bone formation markers, supporting the key role of SATB2 in osteoblast differentiation. These results support the need for bone evaluation in children and adult patients with SATB2-associated syndrome (SAS). Supplementary Information The online version contains supplementary material available at 10.1186/s13023-022-02229-5.
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Affiliation(s)
- M Mouillé
- Clinical Genetics, Necker Enfants Malades Hospital, APHP, 149 rue de Sevres, Paris, 75015, France.,Department of Neonatal Medicine, Cochin-Port Royal Hospital, APHP, Paris, France
| | - M Rio
- Clinical Genetics, Necker Enfants Malades Hospital, APHP, 149 rue de Sevres, Paris, 75015, France
| | - S Breton
- Department of Pediatric Radiology, Necker Enfants Malades Hospital, APHP, Paris, France
| | - M L Piketty
- Functional Exploration Laboratory, Necker Enfants Malades Hospital, APHP, Paris, France
| | - A Afenjar
- Sorbonne University, Reference Center for Intellectual Disabilities, Department of Genetics and Medical Embryology, Armand-Trousseau Hospital, APHP, Paris, France
| | - J Amiel
- Clinical Genetics, Necker Enfants Malades Hospital, APHP, 149 rue de Sevres, Paris, 75015, France
| | - Y Capri
- Clinical Genetics Functional Unit, Robert Debré Hospital, APHP, Paris, France
| | | | - C Francannet
- Clinical Genetics, Clermont-Ferrand CHU, Clermont-Ferrand, France
| | - C Michot
- Clinical Genetics, Necker Enfants Malades Hospital, APHP, 149 rue de Sevres, Paris, 75015, France.,Paris Cité University, Reference Center for Constitutional Bone Diseases, INSERM UMR1163, Imagine Institute, Paris, France
| | - C Mignot
- Sorbonne University, Reference Center for Intellectual Disabilities, Department of Genetics and Medical Embryology, Armand-Trousseau Hospital, APHP, Paris, France.,Clinical Genetics, La Pitié Salpétrière Hospital, APHP, Paris, France
| | - L Perrin
- Clinical Genetics Functional Unit, Robert Debré Hospital, APHP, Paris, France
| | - C Quelin
- Clinical Genetics, Hospital Sud, Rennes, France
| | - J Van Gils
- Clinical Genetics, Hospital Pellegrin, Bordeaux, France
| | - G Barcia
- Molecular Genetics, Necker Enfants Malades Hospital, APHP, Paris, France
| | - V Pingault
- Molecular Genetics, Necker Enfants Malades Hospital, APHP, Paris, France
| | - G Maruani
- Department of Physiology, Hôpital Necker Enfants Malades and Hôpital Européen Georges Pompidou, AP-HP, Paris, France
| | - E Koumakis
- Paris Cité University, Reference Center for Constitutional Bone Diseases, INSERM UMR1163, Imagine Institute, Paris, France.,Reference Center for Skeletal Dysplasia, Cochin Hospital, APHP, Paris, France
| | - V Cormier-Daire
- Clinical Genetics, Necker Enfants Malades Hospital, APHP, 149 rue de Sevres, Paris, 75015, France. .,Paris Cité University, Reference Center for Constitutional Bone Diseases, INSERM UMR1163, Imagine Institute, Paris, France.
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19
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Breton S, Stewart DT, Brémaud J, Havird JC, Smith CH, Hoeh WR. Did doubly uniparental inheritance (DUI) of mtDNA originate as a cytoplasmic male sterility (CMS) system? Bioessays 2022; 44:e2100283. [PMID: 35170770 PMCID: PMC9083018 DOI: 10.1002/bies.202100283] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/26/2022] [Accepted: 01/31/2022] [Indexed: 01/10/2023]
Abstract
Animal and plant species exhibit an astonishing diversity of sexual systems, including environmental and genetic determinants of sex, with the latter including genetic material in the mitochondrial genome. In several hermaphroditic plants for example, sex is determined by an interaction between mitochondrial cytoplasmic male sterility (CMS) genes and nuclear restorer genes. Specifically, CMS involves aberrant mitochondrial genes that prevent pollen development and specific nuclear genes that restore it, leading to a mixture of female (male-sterile) and hermaphroditic individuals in the population (gynodioecy). Such a mitochondrial-nuclear sex determination system is thought to be rare outside plants. Here, we present one possible case of CMS in animals. We hypothesize that the only exception to the strict maternal mtDNA inheritance in animals, the doubly uniparental inheritance (DUI) system in bivalves, might have originated as a mitochondrial-nuclear sex-determination system. We document and explore similarities that exist between DUI and CMS, and we propose various ways to test our hypothesis.
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Affiliation(s)
- Sophie Breton
- Département des sciences biologiques, Université de Montréal, Montréal, Québec, Canada
| | - Donald T Stewart
- Department of Biology, Acadia University, Wolfville, Nova Scotia, Canada
| | - Julie Brémaud
- Département des sciences biologiques, Université de Montréal, Montréal, Québec, Canada
| | - Justin C Havird
- Department of Integrative Biology, The University of Texas at Austin, Austin, Texas, USA
| | - Chase H Smith
- Department of Integrative Biology, The University of Texas at Austin, Austin, Texas, USA
| | - Walter R Hoeh
- Department of Biological Sciences, Kent State University, Kent, Ohio, USA
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20
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Niaison T, Guerra D, Breton S. The complete mitogenome of the inarticulate brachiopod Glottidia pyramidata reveals insights into gene order variation, deviant ATP8 and mtORFans in the Brachiopoda. Mitochondrial DNA B Resour 2021; 6:2701-2703. [PMID: 34435125 PMCID: PMC8381911 DOI: 10.1080/23802359.2021.1966342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Brachiopods are a clade of marine organisms with a tremendously diverse and abundant fossil record but with fewer than 500 species extant today. Even if a better understanding of their biology and genetics could help to test hypotheses about their impressive decline, knowledge of genetics and evolutionary genomics in extant brachiopods is very poor. Here, we present the complete mitochondrial genome sequence of the inarticulate Glottidia pyramidata, an eastern North American extant representative of the phylum Brachiopoda. Besides the general characteristics of the sequenced mitogenome, we present its unusual features such as deviant ATP8 protein sequence and supernumerary ORFs, and also unique gene order, considering the available genome sequences of other brachiopod species.
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Affiliation(s)
- Thierry Niaison
- Department of Biological Sciences, University of Montreal, Montreal, Canada
| | - Davide Guerra
- Department of Biological Sciences, University of Montreal, Montreal, Canada
| | - Sophie Breton
- Department of Biological Sciences, University of Montreal, Montreal, Canada
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21
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Hraoui G, Breton S, Miron G, Boudreau LH, Hunter-Manseau F, Pichaud N. Mitochondrial responses towards intermittent heat shocks in the eastern oyster, Crassostrea virginica. J Exp Biol 2021; 224:272029. [PMID: 34401903 DOI: 10.1242/jeb.242745] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 08/10/2021] [Indexed: 12/12/2022]
Abstract
Frequent heat waves caused by climate change can give rise to physiological stress in many animals, particularly in sessile ectotherms such as bivalves. Most studies characterizing thermal stress in bivalves focus on evaluating the responses to a single stress event. This does not accurately reflect the reality faced by bivalves, which are often subject to intermittent heat waves. Here, we investigated the effect of intermittent heat stress on mitochondrial functions of the eastern oyster, Crassostrea virginica, which play a key role in setting the thermal tolerance of ectotherms. Specifically, we measured changes in mitochondrial oxygen consumption and H2O2 emission rates before, during and after intermittent 7.5°C heat shocks in oysters acclimated to 15 and 22.5°C. Our results showed that oxygen consumption was impaired following the first heat shock at both acclimation temperatures. After the second heat shock, results for oysters acclimated to 15°C indicated a return to normal. However, oysters acclimated to 22.5°C struggled more with the compounding effects of intermittent heat shocks as denoted by an increased contribution of FAD-linked substrates to mitochondrial respiration as well as high levels of H2O2 emission rates. However, both acclimated populations showed signs of potential recovery 10 days after the second heat shock, reflecting a surprising resilience to heat waves by C. virginica. Thus, this study highlights the important role of acclimation in the oyster's capacity to weather intermittent heat shock.
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Affiliation(s)
- Georges Hraoui
- Département des Sciences Biologiques, Université du Québec à Montréal, Montréal, QC, Canada, H2X 1Y4.,Département de Sciences Biologiques, Université de Montréal, Montréal, QC, Canada, H2V 0B3
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC, Canada, H2V 0B3
| | - Gilles Miron
- Department of Biology, Université de Moncton, Moncton, NB, Canada, E1A 3E9
| | - Luc H Boudreau
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, Canada, E1A 3E9.,New Brunswick Centre for Precision Medicine (NBCPM), Moncton, NB, Canada, E1C 8X3
| | - Florence Hunter-Manseau
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, Canada, E1A 3E9.,New Brunswick Centre for Precision Medicine (NBCPM), Moncton, NB, Canada, E1C 8X3
| | - Nicolas Pichaud
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, Canada, E1A 3E9.,New Brunswick Centre for Precision Medicine (NBCPM), Moncton, NB, Canada, E1C 8X3
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22
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Bettinazzi S, Milani L, Blier PU, Breton S. Bioenergetic consequences of sex-specific mitochondrial DNA evolution. Proc Biol Sci 2021; 288:20211585. [PMID: 34403637 PMCID: PMC8370797 DOI: 10.1098/rspb.2021.1585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 07/27/2021] [Indexed: 12/16/2022] Open
Abstract
Doubly uniparental inheritance (DUI) represents a notable exception to the general rule of strict maternal inheritance (SMI) of mitochondria in metazoans. This system entails the coexistence of two mitochondrial lineages (F- and M-type) transmitted separately through oocytes and sperm, thence providing an unprecedented opportunity for the mitochondrial genome to evolve adaptively for male functions. In this study, we explored the impact of a sex-specific mitochondrial evolution upon gamete bioenergetics of DUI and SMI bivalve species, comparing the activity of key enzymes of glycolysis, fermentation, fatty acid metabolism, tricarboxylic acid cycle, oxidative phosphorylation and antioxidant metabolism. Our findings suggest reorganized bioenergetic pathways in DUI gametes compared to SMI gametes. This generally results in a decreased enzymatic capacity in DUI sperm with respect to DUI oocytes, a limitation especially prominent at the terminus of the electron transport system. This bioenergetic remodelling fits a reproductive strategy that does not require high energy input and could potentially link with the preservation of the paternally transmitted mitochondrial genome in DUI species. Whether this phenotype may derive from positive or relaxed selection acting on DUI sperm is still uncertain.
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Affiliation(s)
- Stefano Bettinazzi
- Département de sciences biologiques, Université de Montréal, Montréal, Quebec, Canada H2V 2S9
| | - Liliana Milani
- Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, Bologna 40126, Italia
| | - Pierre U. Blier
- Département de biologie, Université du Québec à Rimouski, Rimouski, Quebec, Canada G5 L 3A1
| | - Sophie Breton
- Département de sciences biologiques, Université de Montréal, Montréal, Quebec, Canada H2V 2S9
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23
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Stewart DT, Robicheau BM, Youssef N, Garrido-Ramos MA, Chase EE, Breton S. Expanding the Search for Sperm Transmission Elements in the Mitochondrial Genomes of Bivalve Mollusks. Genes (Basel) 2021; 12:1211. [PMID: 34440385 PMCID: PMC8394068 DOI: 10.3390/genes12081211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022] Open
Abstract
Doubly uniparental inheritance (DUI) of mitochondrial DNA (mtDNA) in bivalve mollusks is one of the most notable departures from the paradigm of strict maternal inheritance of mtDNA among metazoans. Recently, work on the Mediterranean mussel Mytilus galloprovincialis suggested that a nucleotide motif in the control region of this species, known as the sperm transmission element (STE), helps protect male-transmitted mitochondria from destruction during spermatogenesis. Subsequent studies found similar, yet divergent, STE motifs in other marine mussels. Here, we extend the in silico search for mtDNA signatures resembling known STEs. This search is carried out for the large unassigned regions of 157 complete mitochondrial genomes from within the Mytiloida, Veneroida, Unionoida, and Ostreoida bivalve orders. Based on a sliding window approach, we present evidence that there are additional putative STE signatures in the large unassigned regions of several marine clams and freshwater mussels with DUI. We discuss the implications of this finding for interpreting the origin of doubly uniparental inheritance in ancestral bivalve mollusks, as well as potential future in vitro and in silico studies that could further refine our understanding of the early evolution of this unusual system of mtDNA inheritance.
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Affiliation(s)
- Donald T. Stewart
- Department of Biology, Acadia University, Wolfville, NS B4P 2R6, Canada
| | - Brent M. Robicheau
- Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.R.); (N.Y.)
| | - Noor Youssef
- Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada; (B.M.R.); (N.Y.)
| | - Manuel A. Garrido-Ramos
- Departamento de Genética, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain;
| | - Emily E. Chase
- Institut Méditerranéen d’Océanologie, Aix-Marseille University, 13288 Marseille, France;
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC H3C 3J7, Canada;
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24
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Stewart DT, Stephenson CM, Stanton LM, Chase EE, Robicheau BM, Hoeh WR, Breton S. A proposed method for analyzing molecular signatures to detect hermaphroditism in freshwater mussels: a case study using the eastern floater (Pyganodon cataracta). CAN J ZOOL 2021. [DOI: 10.1139/cjz-2020-0166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Many freshwater mussels (order Unionida) have an unusual system of doubly uniparental inheritance (DUI) of mitochondrial (mt) DNA. In species with DUI, males possess a female-transmitted (F-type) mt genome and a male-transmitted (M-type) mt genome. These genomes contain non-canonical open reading frame (orf) genes, referred to as f-orf and m-orf, present in F and M mt genomes, respectively. These genes have been implicated in sexual development in Unionida. When gonochoric species become hermaphroditic, which has happened several times in Unionida, they lose their M-type mt genome and f-orf genes evolve dramatically. Resulting F-ORF proteins are highly divergent in terms of primary nucleotide sequence, inferred amino acids, and hydrophobic properties; these genes (and proteins) are referred to as hermaphroditic orfs or h-orfs (and H-ORFs). We investigated patterns of hydrophobicity divergence for H-ORF proteins in hermaphrodites versus F-ORF proteins in closely related gonochoric species against cytochrome c oxidase subunit 1 (cox1) divergences. This approach was used to assess whether cryptic hermaphrodites can be detected. Although we did not detect evidence for the recent transition of any populations of eastern floaters (Pyganodon cataracta (Say, 1817)) to hermaphroditism, our analyses demonstrate that molecular signatures in mtDNA can be used to detect hermaphroditism in freshwater mussels.
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Affiliation(s)
- Donald T. Stewart
- Department of Biology, Acadia University, Wolfville, NS B4P 2R6, Canada
| | | | | | - Emily E. Chase
- Department of Biology, Acadia University, Wolfville, NS B4P 2R6, Canada
| | | | - W. Randolph Hoeh
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | - Sophie Breton
- Département de sciences biologiques, Université de Montréal, QC H2V 0B3, Canada
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25
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Breton S. Mitochondrial Russian doll genes may explain some discrepancies in links between mtDNA mutations and mitochondrial diseases. Bioessays 2021; 43:e2100104. [PMID: 34010468 DOI: 10.1002/bies.202100104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Sophie Breton
- Evolutionary Mitochondrial Biology, Department of Biological Sciences, University of Montreal, Montreal, Canada
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26
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Gomes-Dos-Santos A, Lopes-Lima M, Machado AM, Marcos Ramos A, Usié A, Bolotov IN, Vikhrev IV, Breton S, Castro LFC, da Fonseca RR, Geist J, Österling ME, Prié V, Teixeira A, Gan HM, Simakov O, Froufe E. The Crown Pearl: a draft genome assembly of the European freshwater pearl mussel Margaritifera margaritifera (Linnaeus, 1758). DNA Res 2021; 28:6182681. [PMID: 33755103 PMCID: PMC8088596 DOI: 10.1093/dnares/dsab002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/22/2021] [Indexed: 11/17/2022] Open
Abstract
Since historical times, the inherent human fascination with pearls turned the freshwater pearl mussel Margaritifera margaritifera (Linnaeus, 1758) into a highly valuable cultural and economic resource. Although pearl harvesting in M. margaritifera is nowadays residual, other human threats have aggravated the species conservation status, especially in Europe. This mussel presents a myriad of rare biological features, e.g. high longevity coupled with low senescence and Doubly Uniparental Inheritance of mitochondrial DNA, for which the underlying molecular mechanisms are poorly known. Here, the first draft genome assembly of M. margaritifera was produced using a combination of Illumina Paired-end and Mate-pair approaches. The genome assembly was 2.4 Gb long, possessing 105,185 scaffolds and a scaffold N50 length of 288,726 bp. The ab initio gene prediction allowed the identification of 35,119 protein-coding genes. This genome represents an essential resource for studying this species’ unique biological and evolutionary features and ultimately will help to develop new tools to promote its conservation.
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Affiliation(s)
- André Gomes-Dos-Santos
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, P 4450-208 Matosinhos, Portugal.,Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Manuel Lopes-Lima
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, P 4450-208 Matosinhos, Portugal.,CIBIO/InBIO-Research Center in Biodiversity and Genetic Resources, Universidade do Porto, Campus Agrário de Vairão, Rua Padre Armando Quintas, 4485-661 Vairão, Portugal.,IUCN SSC Mollusc Specialist Group, c/o IUCN, Cambridge, England
| | - André M Machado
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, P 4450-208 Matosinhos, Portugal
| | - António Marcos Ramos
- Centro de Biotecnologia Agrícola e Agro-alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal.,MED-Mediterranean Institute for Agriculture, Environment and Development, CEBAL-Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo, 7801-908 Beja, Portugal
| | - Ana Usié
- Centro de Biotecnologia Agrícola e Agro-alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal.,MED-Mediterranean Institute for Agriculture, Environment and Development, CEBAL-Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo, 7801-908 Beja, Portugal
| | - Ivan N Bolotov
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk 163000, Russia
| | - Ilya V Vikhrev
- Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Arkhangelsk 163000, Russia
| | - Sophie Breton
- Department of Biological Sciences, University of Montreal, Montreal, Canada
| | - L Filipe C Castro
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, P 4450-208 Matosinhos, Portugal.,Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Rute R da Fonseca
- Center for Macroecology, Evolution and Climate, GLOBE Institute, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Juergen Geist
- Aquatic Systems Biology Unit, Technical University of Munich, TUM School of Life Sciences, D-85354 Freising, Germany
| | - Martin E Österling
- Department of Environmental and Life Sciences-Biology, Karlstad University, 651 88 Karlstad, Sweden
| | - Vincent Prié
- Research Associate, Institute of Systematics, Evolution, Biodiversity (ISYEB), National Museum of Natural History (MNHN), CNRS, SU, EPHE, 75005 Paris, France
| | - Amílcar Teixeira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal
| | - Han Ming Gan
- GeneSEQ Sdn Bhd, Bandar Bukit Beruntung, Rawang 48300, Selangor, Malaysia
| | - Oleg Simakov
- Department of Neurosciences and Developmental Biology, University of Vienna, 1010 Vienna, Austria
| | - Elsa Froufe
- CIIMAR/CIMAR-Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, P 4450-208 Matosinhos, Portugal
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27
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Breton S, Ghiselli F, Milani L. Mitochondrial Short-Term Plastic Responses and Long-Term Evolutionary Dynamics in Animal Species. Genome Biol Evol 2021; 13:6248094. [PMID: 33892508 PMCID: PMC8290114 DOI: 10.1093/gbe/evab084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 04/13/2021] [Accepted: 04/20/2021] [Indexed: 12/15/2022] Open
Abstract
How do species respond or adapt to environmental changes? The answer to this depends partly on mitochondrial epigenetics and genetics, new players in promoting adaptation to both short- and long-term environmental changes. In this review, we explore how mitochondrial epigenetics and genetics mechanisms, such as mtDNA methylation, mtDNA-derived noncoding RNAs, micropeptides, mtDNA mutations, and adaptations, can contribute to animal plasticity and adaptation. We also briefly discuss the challenges in assessing mtDNA adaptive evolution. In sum, this review covers new advances in the field of mitochondrial genomics, many of which are still controversial, and discusses processes still somewhat obscure, and some of which are still quite speculative and require further robust experimentation.
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Affiliation(s)
- Sophie Breton
- Department of Biological Sciences, University of Montreal, Quebec, Canada
| | - Fabrizio Ghiselli
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Italy
| | - Liliana Milani
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Italy
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28
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Abstract
DNA methylation is an epigenetic mechanism that has been largely probed regarding eukaryotic nuclear genome and bacteria, and its role is especially crucial in the regulation of gene expression. In mammals, it is almost exclusively acting on a cytosine preceding a guanine (CpG), whereas it presents itself mainly in a non-CpG context in bacteria's DNA. Conversely to nuclear and bacterial genomes, the existence of methylation in the mitochondrial genome is still widely debated. This controversy has been attributed to structural differences between the nuclear and mitochondrial genomes, and to the techniques used to study methylation of cytosines, which were rather optimized for the study of nuclear DNA. However, novel studies suggest that cytosine methylation is truly existing in mitochondria, and that it is mostly found in a non-CpG context, just like in their evolutionary relative, the bacteria.
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Affiliation(s)
- Émélie Leroux
- Département de sciences biologiques, Université de Montréal, Campus MIL, Faculté des Arts et des Sciences, CP 6128, Succursale Centre-Ville, Montréal QC, H3C 3J7, Canada
| | - Cindy Brosseau
- Département de sciences biologiques, Université de Montréal, Campus MIL, Faculté des Arts et des Sciences, CP 6128, Succursale Centre-Ville, Montréal QC, H3C 3J7, Canada
| | - Bernard Angers
- Département de sciences biologiques, Université de Montréal, Campus MIL, Faculté des Arts et des Sciences, CP 6128, Succursale Centre-Ville, Montréal QC, H3C 3J7, Canada
| | - Annie Angers
- Département de sciences biologiques, Université de Montréal, Campus MIL, Faculté des Arts et des Sciences, CP 6128, Succursale Centre-Ville, Montréal QC, H3C 3J7, Canada
| | - Sophie Breton
- Département de sciences biologiques, Université de Montréal, Campus MIL, Faculté des Arts et des Sciences, CP 6128, Succursale Centre-Ville, Montréal QC, H3C 3J7, Canada
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Iannello M, Bettinazzi S, Breton S, Ghiselli F, Milani L. A Naturally Heteroplasmic Clam Provides Clues about the Effects of Genetic Bottleneck on Paternal mtDNA. Genome Biol Evol 2021; 13:6130822. [PMID: 33555290 PMCID: PMC7936021 DOI: 10.1093/gbe/evab022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2021] [Indexed: 12/13/2022] Open
Abstract
Mitochondrial DNA (mtDNA) is present in multiple copies within an organism. Since these copies are not identical, a single individual carries a heterogeneous population of mtDNAs, a condition known as heteroplasmy. Several factors play a role in the dynamics of the within-organism mtDNA population: among them, genetic bottlenecks, selection, and strictly maternal inheritance are known to shape the levels of heteroplasmy across mtDNAs. In Metazoa, the only evolutionarily stable exception to the strictly maternal inheritance of mitochondria is the doubly uniparental inheritance (DUI), reported in 100+ bivalve species. In DUI species, there are two highly divergent mtDNA lineages, one inherited through oocyte mitochondria (F-type) and the other through sperm mitochondria (M-type). Having both parents contributing to the mtDNA pool of the progeny makes DUI a unique system to study the dynamics of mtDNA populations. Since, in bivalves, the spermatozoon has few mitochondria (4–5), M-type mtDNA faces a tight bottleneck during embryo segregation, one of the narrowest mitochondrial bottlenecks investigated so far. Here, we analyzed the F- and M-type mtDNA variability within individuals of the DUI species Ruditapes philippinarum and investigated for the first time the effects of such a narrow bottleneck affecting mtDNA populations. As a potential consequence of this narrow bottleneck, the M-type mtDNA shows a large variability in different tissues, a condition so pronounced that it leads to genotypes from different tissues of the same individual not to cluster together. We believe that such results may help understanding the effect of low population size on mtDNA bottleneck.
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Affiliation(s)
- Mariangela Iannello
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Italy
| | - Stefano Bettinazzi
- Department of Biological Sciences, University of Montreal, Quebec, Canada
| | - Sophie Breton
- Department of Biological Sciences, University of Montreal, Quebec, Canada
| | - Fabrizio Ghiselli
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Italy
| | - Liliana Milani
- Department of Biological, Geological, and Environmental Sciences, University of Bologna, Italy
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30
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Mizubuti GB, Camiré D, Ho AMH, Breton S, Klar G. Erector Spinae Plane Block When Neuraxial Analgesia Is Contraindicated by Clotting Abnormalities. Ann Thorac Surg 2021; 112:e245-e247. [PMID: 33549523 DOI: 10.1016/j.athoracsur.2021.01.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 01/21/2023]
Abstract
We describe 4 cases in which patients with coagulopathies, an absolute contraindication to epidural/paravertebral blocks, received an erector spinae plane block to manage severe thoracic pain with respiratory impairment. Intubation was avoided in 2 cases, and weaning from the ventilator was facilitated in 2 cases. Ultrasound-guided erector spinae plane block is simple to perform, has a low risk profile, and provides an excellent analgesic alternative.
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Affiliation(s)
- Glenio B Mizubuti
- Department of Anesthesiology, Kingston Health Sciences Centre, Queen's University, Kingston, Ontario, Canada
| | - Daenis Camiré
- Department of Anesthesiology, Kingston Health Sciences Centre, Queen's University, Kingston, Ontario, Canada
| | - Anthony M-H Ho
- Department of Anesthesiology, Kingston Health Sciences Centre, Queen's University, Kingston, Ontario, Canada
| | - Sophie Breton
- Department of Anesthesiology, Kingston Health Sciences Centre, Queen's University, Kingston, Ontario, Canada
| | - Gregory Klar
- Department of Anesthesiology, Kingston Health Sciences Centre, Queen's University, Kingston, Ontario, Canada.
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31
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Breton S, Pante E, Xue XF, Sun JT. Editorial: Evolution of Mitochondrial Genomes. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.615233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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32
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Pichaud N, Ekström A, Breton S, Sundström F, Rowinski P, Blier PU, Sandblom E. Adjustments of cardiac mitochondrial phenotype in a warmer thermal habitat is associated with oxidative stress in European perch, Perca fluviatilis. Sci Rep 2020; 10:17697. [PMID: 33077851 PMCID: PMC7572411 DOI: 10.1038/s41598-020-74788-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 09/18/2020] [Indexed: 12/18/2022] Open
Abstract
Mitochondria are playing key roles in setting the thermal limits of fish, but how these organelles participate in selection mechanisms during extreme thermal events associated with climate warming in natural populations is unclear. Here, we investigated the thermal effects on mitochondrial metabolism, oxidative stress, and mitochondrial gene expression in cardiac tissues of European perch (Perca fluviatilis) collected from an artificially heated ecosystem, the "Biotest enclosure", and an adjacent reference area in the Baltic sea with normal temperatures (~ 23 °C and ~ 16 °C, respectively, at the time of capture in summer). Fish were sampled one month after a heat wave that caused the Biotest temperatures to peak at ~ 31.5 °C, causing significant mortality. When assayed at 23 °C, Biotest perch maintained high mitochondrial capacities, while reference perch displayed depressed mitochondrial functions relative to measurements at 16 °C. Moreover, mitochondrial gene expression of nd4 (mitochondrial subunit of complex I) was higher in Biotest fish, likely explaining the increased respiration rates observed in this population. Nonetheless, cardiac tissue from Biotest perch displayed higher levels of oxidative damage, which may have resulted from their chronically warm habitat, as well as the extreme temperatures encountered during the preceding summer heat wave. We conclude that eurythermal fish such as perch are able to adjust and maintain mitochondrial capacities of highly aerobic organs such as the heart when exposed to a warming environment as predicted with climate change. However, this might come at the expense of exacerbated oxidative stress, potentially threatening performance in nature.
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Affiliation(s)
- Nicolas Pichaud
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1A 3E9, Canada. .,Department of Biological and Environmental Sciences, University of Gothenburg, 405 30, Gothenburg, Sweden. .,Department of Biology, Université du Québec à Rimouski, Rimouski, QC, G5L 3A1, Canada.
| | - Andreas Ekström
- Department of Biological and Environmental Sciences, University of Gothenburg, 405 30, Gothenburg, Sweden
| | - Sophie Breton
- Department of Biological Sciences, Université de Montréal, Montréal, QC, H2V 2S9, Canada
| | - Fredrik Sundström
- Department of Ecology and Genetics, Uppsala University, 752 36, Uppsala, Sweden
| | - Piotr Rowinski
- Department of Ecology and Genetics, Uppsala University, 752 36, Uppsala, Sweden
| | - Pierre U Blier
- Department of Biology, Université du Québec à Rimouski, Rimouski, QC, G5L 3A1, Canada
| | - Erik Sandblom
- Department of Biological and Environmental Sciences, University of Gothenburg, 405 30, Gothenburg, Sweden
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Mendelsohn AC, Sanmarco LM, Spallanzani RG, Brown D, Quintana FJ, Breton S, Battistone MA. From initial segment to cauda: a regional characterization of mouse epididymal CD11c + mononuclear phagocytes based on immune phenotype and function. Am J Physiol Cell Physiol 2020; 319:C997-C1010. [PMID: 32991210 DOI: 10.1152/ajpcell.00392.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Successful sperm maturation and storage rely on a unique immunological balance that protects the male reproductive organs from invading pathogens and spermatozoa from a destructive autoimmune response. We previously characterized one subset of mononuclear phagocytes (MPs) in the murine epididymis, CX3CR1+ cells, emphasizing their different functional properties. This population partially overlaps with another subset of understudied heterogeneous MPs, the CD11c+ cells. In the present study, we analyzed the CD11c+ MPs for their immune phenotype, morphology, and antigen capturing and presenting abilities. Epididymides from CD11c-EYFP mice, which express enhanced yellow fluorescent protein (EYFP) in CD11c+ MPs, were divided into initial segment (IS), caput/corpus, and cauda regions. Flow cytometry analysis showed that CD11c+ MPs with a macrophage phenotype (CD64+ and F4/80+) were the most abundant in the IS, whereas those with a dendritic cell signature [CD64- major histocompatibility complex class II (MHCII)+] were more frequent in the cauda. Immunofluorescence revealed morphological and phenotypic differences between CD11c+ MPs in the regions examined. To assess the ability of CD11c+ cells to take up antigens, CD11c-EYFP mice were injected intravenously with ovalbumin. In the IS, MPs expressing macrophage markers were most active in taking up the antigens. A functional antigen-presenting coculture study was performed, whereby CD4+ T cells were activated after ovalbumin presentation by CD11c+ epididymal MPs. The results demonstrated that CD11c+ MPs in all regions were capable of capturing and presenting antigens. Together, this study defines a marked regional variation in epididymal antigen-presenting cells that could help us understand fertility and contraception but also has larger implications in inflammation and disease pathology.
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Affiliation(s)
- A C Mendelsohn
- Program in Membrane Biology, Division of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - L M Sanmarco
- Ann Romney Center for Neurological Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - R G Spallanzani
- Department of Immunology, Harvard Medical School, Boston, Massachusetts
| | - D Brown
- Program in Membrane Biology, Division of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - F J Quintana
- Ann Romney Center for Neurological Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts
| | - S Breton
- Program in Membrane Biology, Division of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.,Department of Obstetrics, Gynecology and Reproduction, Université Laval, Centre Hospitalier Universitaire de Québec Research Center, Quebec City, Quebec, Canada
| | - M A Battistone
- Program in Membrane Biology, Division of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
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34
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Chapdelaine V, Bettinazzi S, Breton S, Angers B. Effects of mitonuclear combination and thermal acclimation on the energetic phenotype. J Exp Zool A Ecol Integr Physiol 2020; 333:264-270. [PMID: 32112539 DOI: 10.1002/jez.2355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/06/2020] [Accepted: 02/17/2020] [Indexed: 01/22/2023]
Abstract
Activity of the oxidative phosphorylation complexes rely on intimately associated subunits encoded by the mitochondrial and nuclear genomes. Given the key role of this system in adenosine triphosphate production, genes from both genomes must coevolve. A combination of northern redbelly dace (Chrosomus eos) or finescale dace (C. neogaeus) mitochondrial genome with a C. eos nuclear genome allows for a close examination of a naturally occurring disruption of mitonuclear coevolution. We, therefore, investigated the combined effect of mitonuclear genotypes, acclimation, and temperature on the activity of enzymes linked with the energy metabolism in a sympatric population of wild type and cybrid. As expected, the activity of the nuclear-encoded citrate synthase was only influenced by temperature while the cytochrome c oxidase (composed of nuclear and mitochondrial subunits from wild type and cybrid individuals) responded differently to temperature. This study provides clear evidence of the extent by which mitonuclear coadaptation could influence aerobic metabolism.
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Affiliation(s)
- Vincent Chapdelaine
- Department of Biological Sciences, Université de Montréal, Montreal, Quebec, Canada.,Department of Biological Sciences, Université de Montréal, Group for Interuniversity Research in Limnology and Aquatic Environment (GRIL), Montreal, Quebec, Canada
| | - Stefano Bettinazzi
- Department of Biological Sciences, Université de Montréal, Montreal, Quebec, Canada
| | - Sophie Breton
- Department of Biological Sciences, Université de Montréal, Montreal, Quebec, Canada.,Department of Biological Sciences, Université de Montréal, Group for Interuniversity Research in Limnology and Aquatic Environment (GRIL), Montreal, Quebec, Canada
| | - Bernard Angers
- Department of Biological Sciences, Université de Montréal, Montreal, Quebec, Canada.,Department of Biological Sciences, Université de Montréal, Group for Interuniversity Research in Limnology and Aquatic Environment (GRIL), Montreal, Quebec, Canada
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35
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Bettinazzi S, Rodríguez E, Milani L, Blier PU, Breton S. Metabolic remodelling associated with mtDNA: insights into the adaptive value of doubly uniparental inheritance of mitochondria. Proc Biol Sci 2020; 286:20182708. [PMID: 30963924 DOI: 10.1098/rspb.2018.2708] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Mitochondria produce energy through oxidative phosphorylation (OXPHOS), which depends on the expression of both nuclear and mitochondrial DNA (mtDNA). In metazoans, a striking exception from strictly maternal inheritance of mitochondria is doubly uniparental inheritance (DUI). This unique system involves the maintenance of two highly divergent mtDNAs (F- and M-type, 8-40% of nucleotide divergence) associated with gametes, and occasionally coexisting in somatic tissues. To address whether metabolic differences underlie this condition, we characterized the OXPHOS activity of oocytes, spermatozoa, and gills of different species through respirometry. DUI species express different gender-linked mitochondrial phenotypes in gametes and partly in somatic tissues. The M-phenotype is specific to sperm and entails (i) low coupled/uncoupled respiration rates, (ii) a limitation by the phosphorylation system, and (iii) a null excess capacity of the final oxidases, supporting a strong control over the upstream complexes. To our knowledge, this is the first example of a phenotype resulting from direct selection on sperm mitochondria. This metabolic remodelling suggests an adaptive value of mtDNA variations and we propose that bearing sex-linked mitochondria could assure the energetic requirements of different gametes, potentially linking male-energetic adaptation, mitotype preservation and inheritance, as well as resistance to both heteroplasmy and ageing.
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Affiliation(s)
- Stefano Bettinazzi
- 1 Département de Sciences Biologiques, Université de Montréal , Montréal, QC, Canada H2V 2S9
| | - Enrique Rodríguez
- 2 Département de Biologie, Université du Québec , Rimouski, QC, Canada G5L 3A1
| | - Liliana Milani
- 3 Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna , Bologna 40126 , Italia
| | - Pierre U Blier
- 2 Département de Biologie, Université du Québec , Rimouski, QC, Canada G5L 3A1
| | - Sophie Breton
- 1 Département de Sciences Biologiques, Université de Montréal , Montréal, QC, Canada H2V 2S9
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Hraoui G, Bettinazzi S, Gendron AD, Boisclair D, Breton S. Mitochondrial thermo-sensitivity in invasive and native freshwater mussels. J Exp Biol 2020; 223:jeb215921. [PMID: 31915201 DOI: 10.1242/jeb.215921] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 01/03/2020] [Indexed: 12/13/2022]
Abstract
Climate change is impacting many, if not all, forms of life. Increases in extreme temperature fluctuations and average temperatures can cause stress, particularly in aquatic sessile ectotherms such as freshwater mussels. However, some species seem to thrive more than others in face of temperature-related stressors. Thermal tolerance may, for example, explain the success of invasive species. It is also known that mitochondria can play a key role in setting an ectothermic species' thermal tolerance. In this study, we aimed to characterize the mitochondrial thermo-tolerance in invasive and endemic freshwater mussels. With the use of high-resolution respirometry, we analyzed the mitochondrial respiration of two freshwater bivalve species exposed to a broad range of temperatures. We noticed that the invasive dreissenid Dreissena bugensis possessed a less thermo-tolerant mitochondrial metabolism than the endemic unionid Elliptio complanata This lack of tolerance was linked with a more noticeable aerobic metabolic depression at elevated temperatures. This decrease in mitochondrial metabolic activity was also linked with an increase in leak oxygen consumption as well as a stable maintenance of the activity of cytochrome c oxidase in both species. These findings may be associated both with the species' life history characteristics, as D. bugensis is more adapted to unstable habitats, in which selection pressures for resistance adaptations are reduced. Our findings add to the growing body of literature characterizing the mitochondrial metabolism of many aquatic ectotherms in our changing world.
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Affiliation(s)
- Georges Hraoui
- Département de Sciences Biologiques, Université de Montréal, Pavillon Marie-Victorin, 90 Vincent D'Indy, Montréal, QC, H2V 2S9, Canada
- Groupe de Recherche Interuniversitaire en Limnologie (GRIL), Université de Montréal, Pavillon Marie-Victorin, 90 Vincent D'Indy, Montréal, QC, H2V 2S9, Canada
| | - Stefano Bettinazzi
- Département de Sciences Biologiques, Université de Montréal, Pavillon Marie-Victorin, 90 Vincent D'Indy, Montréal, QC, H2V 2S9, Canada
| | - Andrée D Gendron
- Aquatic Contaminants Research Division, Water Science and Technology Directorate, Environment and Climate Change Canada, 105 McGill, Montréal, QC, H2Y 2E5, Canada
| | - Daniel Boisclair
- Département de Sciences Biologiques, Université de Montréal, Pavillon Marie-Victorin, 90 Vincent D'Indy, Montréal, QC, H2V 2S9, Canada
- Groupe de Recherche Interuniversitaire en Limnologie (GRIL), Université de Montréal, Pavillon Marie-Victorin, 90 Vincent D'Indy, Montréal, QC, H2V 2S9, Canada
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Pavillon Marie-Victorin, 90 Vincent D'Indy, Montréal, QC, H2V 2S9, Canada
- Groupe de Recherche Interuniversitaire en Limnologie (GRIL), Université de Montréal, Pavillon Marie-Victorin, 90 Vincent D'Indy, Montréal, QC, H2V 2S9, Canada
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Capt C, Bouvet K, Guerra D, Robicheau BM, Stewart DT, Pante E, Breton S. Unorthodox features in two venerid bivalves with doubly uniparental inheritance of mitochondria. Sci Rep 2020; 10:1087. [PMID: 31974502 PMCID: PMC6978325 DOI: 10.1038/s41598-020-57975-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 01/09/2020] [Indexed: 12/02/2022] Open
Abstract
In animals, strictly maternal inheritance (SMI) of mitochondria is the rule, but one exception (doubly uniparental inheritance or DUI), marked by the transmission of sex-specific mitogenomes, has been reported in bivalves. Associated with DUI is a frequent modification of the mitochondrial cox2 gene, as well as additional sex-specific mitochondrial genes not involved in oxidative phosphorylation. With the exception of freshwater mussels (for 3 families of the order Unionida), these DUI-associated features have only been shown in few species [within Mytilidae (order Mytilida) and Veneridae (order Venerida)] because of the few complete sex-specific mitogenomes published for these orders. Here, we present the complete sex-specific mtDNAs of two recently-discovered DUI species in two families of the order Venerida, Scrobicularia plana (Semelidae) and Limecola balthica (Tellinidae). These species display the largest differences in genome size between sex-specific mitotypes in DUI species (>10 kb), as well as the highest mtDNA divergences (sometimes reaching >50%). An important in-frame insertion (>3.5 kb) in the male cox2 gene is partly responsible for the differences in genome size. The S. plana cox2 gene is the largest reported so far in the Kingdom Animalia. The mitogenomes may be carrying sex-specific genes, indicating that general mitochondrial features are shared among DUI species.
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Affiliation(s)
- Charlotte Capt
- Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada.
| | - Karim Bouvet
- Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada
| | - Davide Guerra
- Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada
| | | | - Donald T Stewart
- Department of Biology, Acadia University, Wolfville, NS, B4P 2R6, Canada
| | - Eric Pante
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, 2 rue Olympe de Gouges, 17000, La Rochelle, France
| | - Sophie Breton
- Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada.
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Ouimet P, Kienzle L, Lubosny M, Burzyński A, Angers A, Breton S. The ORF in the control region of the female-transmitted Mytilus mtDNA codes for a protein. Gene 2020; 725:144161. [DOI: 10.1016/j.gene.2019.144161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/02/2019] [Accepted: 10/07/2019] [Indexed: 01/14/2023]
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Froufe E, Bolotov I, Aldridge DC, Bogan AE, Breton S, Gan HM, Kovitvadhi U, Kovitvadhi S, Riccardi N, Secci-Petretto G, Sousa R, Teixeira A, Varandas S, Zanatta D, Zieritz A, Fonseca MM, Lopes-Lima M. Mesozoic mitogenome rearrangements and freshwater mussel (Bivalvia: Unionoidea) macroevolution. Heredity (Edinb) 2020; 124:182-196. [PMID: 31201385 PMCID: PMC6906506 DOI: 10.1038/s41437-019-0242-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/28/2019] [Accepted: 05/30/2019] [Indexed: 11/08/2022] Open
Abstract
Using a new fossil-calibrated mitogenome-based approach, we identified macroevolutionary shifts in mitochondrial gene order among the freshwater mussels (Unionoidea). We show that the early Mesozoic divergence of the two Unionoidea clades, Margaritiferidae and Unionidae, was accompanied by a synchronous split in the gene arrangement in the female mitogenome (i.e., gene orders MF1 and UF1). Our results suggest that this macroevolutionary jump was completed within a relatively short time interval (95% HPD 201-226 Ma) that coincided with the Triassic-Jurassic mass extinction. Both gene orders have persisted within these clades for ~200 Ma. The monophyly of the so-called "problematic" Gonideinae taxa was supported by all the inferred phylogenies in this study using, for the first time, the M- and F-type mitogenomes either singly or combined. Within Gonideinae, two additional splits in the gene order (UF1 to UF2, UF2 to UF3) occurred in the Mesozoic and have persisted for ~150 and ~100 Ma, respectively. Finally, the mitogenomic results suggest ancient connections between freshwater basins of East Asia and Europe near the Cretaceous-Paleogene boundary, probably via a continuous paleo-river system or along the Tethys coastal line, which are well supported by at least three independent but almost synchronous divergence events.
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Affiliation(s)
- Elsa Froufe
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, Matosinhos, 4450-208, Portugal.
| | - Ivan Bolotov
- IBIGER - Institute of Biogeography and Genetic Resources, Federal Center for Integrated Arctic Research, Russian Academy of Sciences, Severnaya Dvina Emb. 23, Arkhangelsk, 163000, Russian Federation
- Northern Arctic Federal University, Severnaya Dvina Emb. 17, Arkhangelsk, 163000, Russian Federation
| | - David C Aldridge
- Department of Zoology, University of Cambridge, The David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - Arthur E Bogan
- North Carolina State Museum of Natural Sciences, 11 West Jones St., Raleigh, NC, 27601, USA
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC, H2V 2S9, Canada
| | - Han Ming Gan
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, 3220, VIC, Australia
| | - Uthaiwan Kovitvadhi
- Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand
| | - Satit Kovitvadhi
- Department of Agriculture, Faculty of Science and Technology, Bansomdejchaopraya Rajabhat University, Bangkok, 10600, Thailand
| | | | - Giulia Secci-Petretto
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, Matosinhos, 4450-208, Portugal
| | - Ronaldo Sousa
- CBMA - Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Campus Gualtar, Braga, 4710-057, Portugal
| | - Amilcar Teixeira
- CIMO/ESA/IPB - Mountain Research Centre, School of Agriculture, Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, Bragança, 5301-854, Portugal
| | - Simone Varandas
- CITAB/UTAD - Centre for Research and Technology of Agro-Environment and Biological Sciences, University of Trás-os-Montes and Alto Douro, Forestry Department, Vila Real, 5000-801, Portugal
| | - David Zanatta
- Biology Department, Institute for Great Lakes Research, Central Michigan University, Biosciences Bldg. 2408, Mount Pleasant, MI, 48859, USA
| | - Alexandra Zieritz
- School of Environmental and Geographical Sciences, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih, 43500, Malaysia
| | - Miguel M Fonseca
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, Matosinhos, 4450-208, Portugal
| | - Manuel Lopes-Lima
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, Matosinhos, 4450-208, Portugal
- CIBIO/InBIO - Research Center in Biodiversity and Genetic Resources, University of Porto, Campus Agrário de Vairão, Rua Padre Armando Quintas 7, Vairão, Porto, 4485-661, Portugal
- SSC/IUCN - Mollusc Specialist Group, Species Survival Commission, International Union for Conservation of Nature, c/o The David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
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Guerra D, Lopes-Lima M, Froufe E, Gan HM, Ondina P, Amaro R, Klunzinger MW, Callil C, Prié V, Bogan AE, Stewart DT, Breton S. Variability of mitochondrial ORFans hints at possible differences in the system of doubly uniparental inheritance of mitochondria among families of freshwater mussels (Bivalvia: Unionida). BMC Evol Biol 2019; 19:229. [PMID: 31856711 PMCID: PMC6923999 DOI: 10.1186/s12862-019-1554-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 12/09/2019] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Supernumerary ORFan genes (i.e., open reading frames without obvious homology to other genes) are present in the mitochondrial genomes of gonochoric freshwater mussels (Bivalvia: Unionida) showing doubly uniparental inheritance (DUI) of mitochondria. DUI is a system in which distinct female-transmitted and male-transmitted mitotypes coexist in a single species. In families Unionidae and Margaritiferidae, the transition from dioecy to hermaphroditism and the loss of DUI appear to be linked, and this event seems to affect the integrity of the ORFan genes. These observations led to the hypothesis that the ORFans have a role in DUI and/or sex determination. Complete mitochondrial genome sequences are however scarce for most families of freshwater mussels, therefore hindering a clear localization of DUI in the various lineages and a comprehensive understanding of the influence of the ORFans on DUI and sexual systems. Therefore, we sequenced and characterized eleven new mitogenomes from poorly sampled freshwater mussel families to gather information on the evolution and variability of the ORFan genes and their protein products. RESULTS We obtained ten complete plus one almost complete mitogenome sequence from ten representative species (gonochoric and hermaphroditic) of families Margaritiferidae, Hyriidae, Mulleriidae, and Iridinidae. ORFan genes are present only in DUI species from Margaritiferidae and Hyriidae, while non-DUI species from Hyriidae, Iridinidae, and Mulleriidae lack them completely, independently of their sexual system. Comparisons among the proteins translated from the newly characterized ORFans and already known ones provide evidence of conserved structures, as well as family-specific features. CONCLUSIONS The ORFan proteins show a comparable organization of secondary structures among different families of freshwater mussels, which supports a conserved physiological role, but also have distinctive family-specific features. Given this latter observation and the fact that the ORFans can be either highly mutated or completely absent in species that secondarily lost DUI depending on their respective family, we hypothesize that some aspects of the connection among ORFans, sexual systems, and DUI may differ in the various lineages of unionids.
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Affiliation(s)
- Davide Guerra
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC Canada
| | - Manuel Lopes-Lima
- CIBIO/InBIO - Research Center in Biodiversity and Genetic Resources, University of Porto, Campus Agrário de Vairão, Vairão, Portugal
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal
| | - Elsa Froufe
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal
| | - Han Ming Gan
- Deakin Genomics Centre, School of Life and Environmental Sciences, Deakin University, Geelong, Victoria Australia
| | - Paz Ondina
- Departamento de Zooloxía, Xenética e Antropoloxía Física, Facultade de Veterinaria, Universidade de Santiago de Compostela, Campus de Lugo, Lugo, Spain
| | - Rafaela Amaro
- Departamento de Zooloxía, Xenética e Antropoloxía Física, Facultade de Veterinaria, Universidade de Santiago de Compostela, Campus de Lugo, Lugo, Spain
| | - Michael W. Klunzinger
- BWG Environmental, Brisbane, QLD Australia
- Mollusca, Department of Aquatic Zoology, Western Australian Museum, Welshpool, WA Australia
- School of Veterinary and Biological Sciences, Murdoch University, Perth, WA Australia
| | - Claudia Callil
- ECOBiv - Ecology and Conservation of Bivalves Research Group, Department of Biology and Zoology, Federal University of Mato Grosso, Cuiabá, MT Brazil
| | - Vincent Prié
- Institut Systématique Evolution Biodiversité ISYEB - Muséum National d’Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | | | | | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, QC Canada
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41
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Bettinazzi S, Nadarajah S, Dalpé A, Milani L, Blier PU, Breton S. Linking paternally inherited mtDNA variants and sperm performance. Philos Trans R Soc Lond B Biol Sci 2019; 375:20190177. [PMID: 31787040 DOI: 10.1098/rstb.2019.0177] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Providing robust links between mitochondrial genotype and phenotype is of major importance given that mitochondrial DNA (mtDNA) variants can affect reproductive success. Because of the strict maternal inheritance (SMI) of mitochondria in animals, haplotypes that negatively affect male fertility can become fixed in populations. This phenomenon is known as 'mother's curse'. Doubly uniparental inheritance (DUI) of mitochondria is a stable exception in bivalves, which entails two mtDNA lineages that evolve independently and are transmitted separately through oocytes and sperm. This makes the DUI mitochondrial lineages subject to different sex-specific selective sieves during mtDNA evolution, thus DUI is a unique model to evaluate how direct selection on sperm mitochondria could contribute to male reproductive fitness. In this study, we tested the impact of mtDNA variants on sperm performance and bioenergetics in DUI and SMI species. Analyses also involved measures of sperm performance following inhibition of main energy pathways and sperm response to oocyte presence. Compared to SMI, DUI sperm exhibited (i) low speed and linearity, (ii) a strict OXPHOS-dependent strategy of energy production, and (iii) a partial metabolic shift towards fermentation following egg detection. Discussion embraces the adaptive value of mtDNA variation and suggests a link between male-energetic adaptation, fertilization success and paternal mitochondria preservation. This article is part of the theme issue 'Linking the mitochondrial genotype to phenotype: a complex endeavour'.
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Affiliation(s)
- Stefano Bettinazzi
- Département des Sciences Biologiques, Université de Montréal, Montréal, Québec, Canada H2V 2S9
| | - Sugahendni Nadarajah
- Département des Sciences Biologiques, Université de Montréal, Montréal, Québec, Canada H2V 2S9.,Département Sciences de l'Univers, Environnement, Ecologie, Sorbonne Université, 75005 Paris, France
| | - Andréanne Dalpé
- Département des Sciences Biologiques, Université de Montréal, Montréal, Québec, Canada H2V 2S9
| | - Liliana Milani
- Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Bologna, Bologna 40126, Italia
| | - Pierre U Blier
- Département de Biologie, Université du Québec à Rimouski, Rimouski, Québec, Canada G5L 3A1
| | - Sophie Breton
- Département des Sciences Biologiques, Université de Montréal, Montréal, Québec, Canada H2V 2S9
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42
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Pichaud N, Ekström A, Breton S, Sundström F, Rowinski P, Blier PU, Sandblom E. Cardiac mitochondrial plasticity and thermal sensitivity in a fish inhabiting an artificially heated ecosystem. Sci Rep 2019; 9:17832. [PMID: 31780821 PMCID: PMC6883045 DOI: 10.1038/s41598-019-54165-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/06/2019] [Indexed: 12/03/2022] Open
Abstract
Some evidence suggests that cardiac mitochondrial functions might be involved in the resilience of ectotherms such as fish to environmental warming. Here, we investigated the effects of acute and chronic changes in thermal regimes on cardiac mitochondrial plasticity and thermal sensitivity in perch (Perca fluviatilis) from an artificially heated ecosystem; the “Biotest enclosure” (~25 °C), and from an adjacent area in the Baltic Sea with normal temperatures (reference, ~16 °C). We evaluated cardiac mitochondrial respiration at assay temperatures of 16 and 25 °C, as well as activities of lactate dehydrogenase (LDH) and citrate synthase (CS) in Biotest and reference perch following 8 months laboratory-acclimation to either 16 or 25 °C. While both populations exhibited higher acute mitochondrial thermal sensitivity when acclimated to their natural habitat temperatures, this sensitivity was lost when Biotest and reference fish were acclimated to 16 and 25 °C, respectively. Moreover, reference fish displayed patterns of metabolic thermal compensation when acclimated to 25 °C, whereas no changes were observed in Biotest perch acclimated to 16 °C, suggesting that cardiac mitochondrial metabolism of Biotest fish expresses local adaptation. This study highlights the adaptive responses of cardiac mitochondria to environmental warming, which can impact on fish survival and distribution in a warming climate.
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Affiliation(s)
- Nicolas Pichaud
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, E1 A 3E9, Canada. .,Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, 405 30, Sweden. .,Department of Biology, Université du Québec à Rimouski, Rimouski, QC, Canada, G5L 3A1.
| | - Andreas Ekström
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, 405 30, Sweden
| | - Sophie Breton
- Department of Biological Sciences, Université de Montréal, Montréal, QC, H2V 2S9, Canada
| | - Fredrik Sundström
- Department of Ecology and Genetics, Uppsala University, Uppsala, 752 36, Sweden
| | - Piotr Rowinski
- Department of Ecology and Genetics, Uppsala University, Uppsala, 752 36, Sweden
| | - Pierre U Blier
- Department of Biology, Université du Québec à Rimouski, Rimouski, QC, Canada, G5L 3A1
| | - Erik Sandblom
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, 405 30, Sweden
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43
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Capt C, Renaut S, Stewart DT, Johnson NA, Breton S. Putative Mitochondrial Sex Determination in the Bivalvia: Insights From a Hybrid Transcriptome Assembly in Freshwater Mussels. Front Genet 2019; 10:840. [PMID: 31572447 PMCID: PMC6754070 DOI: 10.3389/fgene.2019.00840] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 08/13/2019] [Indexed: 11/13/2022] Open
Abstract
Bivalves exhibit an astonishing diversity of sexual systems, with genetic and environmental determinants of sex, and possibly the only example of mitochondrial genes influencing sex determination pathways in animals. In contrast to all other animal species in which strict maternal inheritance (SMI) of mitochondria is the rule, bivalves possess a system known as doubly uniparental inheritance (DUI) of mitochondria in which maternal and paternal mitochondria (and their corresponding female-transmitted or F mtDNA and male-transmitted or M mtDNA genomes) are transmitted within a species. Species with DUI also possess sex-associated mtDNA-encoded proteins (in addition to the typical set of 13), which have been hypothesized to play a role in sex determination. In this study, we analyzed the sex-biased transcriptome in gonads of two closely-related freshwater mussel species with different reproductive and mitochondrial transmission modes: the gonochoric, DUI species, Utterbackia peninsularis, and the hermaphroditic, SMI species, Utterbackia imbecillis. Through comparative analysis with other DUI and non-DUI bivalve transcriptomes already available, we identify common male and female-specific genes, as well as SMI and DUI-related genes, that are probably involved in sex determination and mitochondrial inheritance in this animal group. Our results contribute to the understanding of what could be the first animal sex determination system involving the mitochondrial genome.
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Affiliation(s)
- Charlotte Capt
- Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada
| | - Sébastien Renaut
- Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada.,Centre de la Science de la Biodiversité du Québec, Université de Montréal, Montréal, QC, Canada
| | | | - Nathan A Johnson
- Wetland and Aquatic Research Center, U.S. Geological Survey, Gainesville, FL, United States
| | - Sophie Breton
- Department of Biological Sciences, Université de Montréal, Montréal, QC, Canada
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44
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Breton S, Nair AV, Battistone MA. Epithelial dynamics in the epididymis: role in the maturation, protection, and storage of spermatozoa. Andrology 2019; 7:631-643. [PMID: 31044554 PMCID: PMC6688936 DOI: 10.1111/andr.12632] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/07/2019] [Accepted: 03/29/2019] [Indexed: 01/10/2023]
Abstract
Epithelial cells line the lumen of tubular organs and are key players in their respective functions. They establish a unique luminal environment by providing a protective barrier and by performing vectorial transport of ions, nutrients, solutes, proteins, and water. Complex intercellular communication networks, specific for each organ, ensure their interaction with adjacent epithelial and non-epithelial cells, allowing them to respond to and modulate their immediate environment. In the epididymis, several epithelial cell types work in a concerted manner to establish a luminal acidic milieu that is essential for the post-testicular maturation and storage of spermatozoa. The epididymis also prevents autoimmune responses against auto-antigenic spermatozoa, while ensuring protection against ascending and blood pathogens. This is achieved by a network of immune cells that are in close contact and interact with epithelial cells. This review highlights the coordinated interactions between spermatozoa, basal cells, principal cells, narrow cells, clear cells, and immune cells that contribute to the maturation, protection, selection, and storage of spermatozoa in the lumen of the epididymis.
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Affiliation(s)
- S Breton
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Harvard Medical School, Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA
| | - A V Nair
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Harvard Medical School, Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA
| | - M A Battistone
- Program in Membrane Biology, Nephrology Division, Department of Medicine, Harvard Medical School, Center for Systems Biology, Massachusetts General Hospital, Boston, MA, USA
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45
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Sullivan R, Légaré C, Lamontagne‐Proulx J, Breton S, Soulet D. Revisiting structure/functions of the human epididymis. Andrology 2019; 7:748-757. [DOI: 10.1111/andr.12633] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/07/2019] [Accepted: 03/29/2019] [Indexed: 01/20/2023]
Affiliation(s)
- R. Sullivan
- Department Obstetrics, Gynecology and Reproduction Faculty Medicine Université Laval Quebec QC Canada
- Reproduction, Mother and Youth Health Division Centre de recherche du CHU de Québec‐Université Laval Quebec QC Canada
| | - C. Légaré
- Department Obstetrics, Gynecology and Reproduction Faculty Medicine Université Laval Quebec QC Canada
- Reproduction, Mother and Youth Health Division Centre de recherche du CHU de Québec‐Université Laval Quebec QC Canada
| | - J. Lamontagne‐Proulx
- Faculty Pharmacy Université Laval Quebec QC Canada
- Neurosciences Division Centre de recherche du CHU de Québec‐Université Laval Quebec QC Canada
| | - S. Breton
- Massachusetts General Hospital Harvard Medical School Boston MA USA
| | - D. Soulet
- Faculty Pharmacy Université Laval Quebec QC Canada
- Neurosciences Division Centre de recherche du CHU de Québec‐Université Laval Quebec QC Canada
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46
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Gomes-dos-Santos A, Froufe E, Amaro R, Ondina P, Breton S, Guerra D, Aldridge DC, Bolotov IN, Vikhrev IV, Gan HM, Gonçalves DV, Bogan AE, Sousa R, Stewart D, Teixeira A, Varandas S, Zanatta D, Lopes-Lima M. The male and female complete mitochondrial genomes of the threatened freshwater pearl mussel Margaritifera margaritifera (Linnaeus, 1758) (Bivalvia: Margaritiferidae). Mitochondrial DNA B Resour 2019. [DOI: 10.1080/23802359.2019.1598794] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- André Gomes-dos-Santos
- CIIMAR/CIMAR – Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal
- nDepartment of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre 1021/1055, Porto, Portugal
| | - Elsa Froufe
- CIIMAR/CIMAR – Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal
| | - Rafaela Amaro
- Department of Zoology, Genetics, and Physical Anthropology, Faculty of Veterinary Science, University of Santiago de Compostela, Lugo, Spain
| | - Paz Ondina
- Department of Zoology, Genetics, and Physical Anthropology, Faculty of Veterinary Science, University of Santiago de Compostela, Lugo, Spain
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, Montréal, Canada
| | - Davide Guerra
- Département de Sciences Biologiques, Université de Montréal, Montréal, Canada
| | - David C. Aldridge
- Department of Zoology, University of Cambridge, Cambridge, United Kingdom
| | - Ivan N. Bolotov
- Federal Center for Integrated Arctic Research of the Russian Academy of Sciences
| | - Ilya V. Vikhrev
- Federal Center for Integrated Arctic Research of the Russian Academy of Sciences
| | - Han Ming Gan
- Deakin Genomics Centre School of Life and Environmental Sciences, Deakin University, Geelong, Australia
| | - Duarte V. Gonçalves
- CIIMAR/CIMAR – Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal
| | - Arthur E. Bogan
- Research Laboratory, North Carolina Museum of Natural Sciences, Raleigh, NC, USA
| | - Ronaldo Sousa
- CBMA – Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Braga, Portugal
| | - Donald Stewart
- Department of Biology, Acadia University, Wolfville, Canada
| | - Amílcar Teixeira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal
| | - Simone Varandas
- CITAB-UTAD – Centre for Research and Technology of Agro-Environment and Biological Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - David Zanatta
- Biology Department, Institute for Great Lakes Research, Central Michigan University, Mount Pleasant, MI, USA
| | - Manuel Lopes-Lima
- CIIMAR/CIMAR – Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Matosinhos, Portugal
- CIBIO – Centro de Investigação em Biodiversidade e Recursos Genéticos, InBio Laboratório Associado, Universidade do Porto, Agrário de Vairão, Portugal
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47
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Angers A, Ouimet P, Tsyvian-Dzyabko A, Nock T, Breton S. [The underestimated coding potential of mitochondrial DNA]. Med Sci (Paris) 2019; 35:46-54. [PMID: 30672456 DOI: 10.1051/medsci/2018308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Mitochondria are ancient organelles that emerged from the endosymbiosis of free-living proto-bacteria. They still retain a semi-autonomous genetic system with a small genome. Mitochondrial DNA (mtDNA) codes for 13 essential proteins for the production of ATP, the sequences of which are relatively conserved across Metazoans. The discovery of additional mitochondria-derived peptides (MDPs) indicates an underestimated coding potential. Humanin, an anti-apoptotic peptide, is likely independently transcribed from within the 16S rRNA gene, as are recently described SHLPs. MOTS-c, discovered in silico, has been demonstrated to be involved in metabolism and insulin sensitivity. Gau, is a positionally conserved open reading frame (ORF) sequence found in the antisense strand of the COX1 gene and its corresponding peptide is strictly colocalized with mitochondrial markers. In bivalves with doubly uniparental inheritance of mtDNA, male and female mtDNAs each carry a separate additional gene possibly involved in sex determination. Other MDPs likely exist and their investigation will shed light on the underestimated functional repertoire of mitochondria.
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Affiliation(s)
- Annie Angers
- Département de sciences biologiques, université de Montréal, pavillon Marie-Victorin, faculté des arts et des sciences. CP 6128, succursale centre-ville, Montréal QC, H3C 3J7, Canada
| | - Philip Ouimet
- Département de sciences biologiques, université de Montréal, pavillon Marie-Victorin, faculté des arts et des sciences. CP 6128, succursale centre-ville, Montréal QC, H3C 3J7, Canada
| | - Assia Tsyvian-Dzyabko
- Département de sciences biologiques, université de Montréal, pavillon Marie-Victorin, faculté des arts et des sciences. CP 6128, succursale centre-ville, Montréal QC, H3C 3J7, Canada
| | - Tanya Nock
- Département de sciences biologiques, université de Montréal, pavillon Marie-Victorin, faculté des arts et des sciences. CP 6128, succursale centre-ville, Montréal QC, H3C 3J7, Canada
| | - Sophie Breton
- Département de sciences biologiques, université de Montréal, pavillon Marie-Victorin, faculté des arts et des sciences. CP 6128, succursale centre-ville, Montréal QC, H3C 3J7, Canada
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48
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Chase EE, Robicheau BM, Hoeh WR, Harris JL, Stewart DT, Breton S. The complete male-type mitochondrial genomes of the Fatmucket, Lampsilis siliquoidea, and the endangered Arkansas Fatmucket, Lampsilis powellii. Mitochondrial DNA B Resour 2019. [DOI: 10.1080/23802359.2018.1536459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- E. E. Chase
- Department of Biology, Acadia University, Wolfville, Canada
| | - B. M. Robicheau
- Department of Biology, Life Science Centre, Dalhousie University, Halifax, Canada
| | - W. R. Hoeh
- Department of Biological Sciences, Kent State University, Kent, OH, USA
| | - J. L. Harris
- Department of Biological Sciences, Arkansas State University, Jonesboro, AR, USA
| | - D. T. Stewart
- Department of Biology, Acadia University, Wolfville, Canada
| | - S. Breton
- Department of Biological Sciences, University of Montreal, Montreal, Canada
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49
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Ghiselli F, Breton S, Milani L. Mitochondrial activity in gametes and uniparental inheritance: a comment on 'What can we infer about the origin of sex in early eukaryotes?'. Philos Trans R Soc Lond B Biol Sci 2018; 373:rstb.2017.0147. [PMID: 29335380 DOI: 10.1098/rstb.2017.0147] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2017] [Indexed: 01/27/2023] Open
Affiliation(s)
- Fabrizio Ghiselli
- Dipartimento di Scienze Biologiche, Geologiche ed Ambientali, Università di Bologna, Via Semi 3, 40126 Bologna, Italy
| | - Sophie Breton
- Département de Sciences Biologiques, Université de Montréal, 90 avenue Vincent d'Indy, Montréal, Québec, Canada H2V 2S9
| | - Liliana Milani
- Dipartimento di Scienze Biologiche, Geologiche ed Ambientali, Università di Bologna, Via Semi 3, 40126 Bologna, Italy
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50
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Renaut S, Guerra D, Hoeh WR, Stewart DT, Bogan AE, Ghiselli F, Milani L, Passamonti M, Breton S. Genome Survey of the Freshwater Mussel Venustaconcha ellipsiformis (Bivalvia: Unionida) Using a Hybrid De Novo Assembly Approach. Genome Biol Evol 2018; 10:1637-1646. [PMID: 29878181 PMCID: PMC6054159 DOI: 10.1093/gbe/evy117] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2018] [Indexed: 02/03/2023] Open
Abstract
Freshwater mussels (Bivalvia: Unionida) serve an important role as aquatic ecosystem engineers but are one of the most critically imperilled groups of animals. Here, we used a combination of sequencing strategies to assemble and annotate a draft genome of Venustaconcha ellipsiformis, which will serve as a valuable genomic resource given the ecological value and unique “doubly uniparental inheritance” mode of mitochondrial DNA transmission of freshwater mussels. The genome described here was obtained by combining high-coverage short reads (65× genome coverage of Illumina paired-end and 11× genome coverage of mate-pairs sequences) with low-coverage Pacific Biosciences long reads (0.3× genome coverage). Briefly, the final scaffold assembly accounted for a total size of 1.54 Gb (366,926 scaffolds, N50 = 6.5 kb, with 2.3% of “N” nucleotides), representing 86% of the predicted genome size of 1.80 Gb, while over one third of the genome (37.5%) consisted of repeated elements and >85% of the core eukaryotic genes were recovered. Given the repeated genetic bottlenecks of V. ellipsiformis populations as a result of glaciations events, heterozygosity was also found to be remarkably low (0.6%), in contrast to most other sequenced bivalve species. Finally, we reassembled the full mitochondrial genome and found six polymorphic sites with respect to the previously published reference. This resource opens the way to comparative genomics studies to identify genes related to the unique adaptations of freshwater mussels and their distinctive mitochondrial inheritance mechanism.
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Affiliation(s)
- Sébastien Renaut
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, Canada.,Quebec Centre for Biodiversity Science, Montréal, Québec, Canada
| | - Davide Guerra
- Département de Sciences Biologiques, Université de Montréal, Canada
| | - Walter R Hoeh
- Department of Biological Sciences, Kent State University
| | - Donald T Stewart
- Department of Biology, Acadia University, Wolfville, Nova Scotia, Canada
| | - Arthur E Bogan
- North Carolina Museum of Natural Sciences, Raleigh, North Carolina
| | - Fabrizio Ghiselli
- Dipartimento di Scienze Biologiche, Geologiche ed Ambientali, University of Bologna, Italy
| | - Liliana Milani
- Dipartimento di Scienze Biologiche, Geologiche ed Ambientali, University of Bologna, Italy
| | - Marco Passamonti
- Dipartimento di Scienze Biologiche, Geologiche ed Ambientali, University of Bologna, Italy
| | - Sophie Breton
- Quebec Centre for Biodiversity Science, Montréal, Québec, Canada.,Département de Sciences Biologiques, Université de Montréal, Canada
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