1
|
Beignon F, Gueguen N, Tricoire-Leignel H, Mattei C, Lenaers G. The multiple facets of mitochondrial regulations controlling cellular thermogenesis. Cell Mol Life Sci 2022; 79:525. [PMID: 36125552 DOI: 10.1007/s00018-022-04523-8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/21/2022] [Accepted: 08/09/2022] [Indexed: 12/01/2022]
Abstract
Understanding temperature production and regulation in endotherm organisms becomes a crucial challenge facing the increased frequency and intensity of heat strokes related to global warming. Mitochondria, located at the crossroad of metabolism, respiration, Ca2+ homeostasis, and apoptosis, were recently proposed to further act as cellular radiators, with an estimated inner temperature reaching 50 °C in common cell lines. This inner thermogenesis might be further exacerbated in organs devoted to produce consistent efforts as muscles, or heat as brown adipose tissue, in response to acute solicitations. Consequently, pathways promoting respiratory chain uncoupling and mitochondrial activity, such as Ca2+ fluxes, uncoupling proteins, futile cycling, and substrate supplies, provide the main processes controlling heat production and cell temperature. The mitochondrial thermogenesis might be further amplified by cytoplasmic mechanisms promoting the over-consumption of ATP pools. Considering these new thermic paradigms, we discuss here all conventional wisdoms linking mitochondrial functions to cellular thermogenesis in different physiological conditions.
Collapse
Affiliation(s)
- Florian Beignon
- Univ Angers, MitoLab, Unité MITOVASC, UMR CNRS 6015, INSERM U1083, SFR ICAT, Angers, France.
| | - Naig Gueguen
- Univ Angers, MitoLab, Unité MITOVASC, UMR CNRS 6015, INSERM U1083, SFR ICAT, Angers, France.,Service de Biochimie et Biologie Moléculaire, CHU d'Angers, Angers, France
| | | | - César Mattei
- Univ Angers, CarMe, Unité MITOVASC, UMR CNRS 6015, INSERM U1083, SFR ICAT, Angers, France
| | - Guy Lenaers
- Univ Angers, MitoLab, Unité MITOVASC, UMR CNRS 6015, INSERM U1083, SFR ICAT, Angers, France. .,Service de Neurologie, CHU d'Angers, Angers, France.
| |
Collapse
|
2
|
Ganapathi M, Friocourt G, Gueguen N, Friederich MW, Le Gac G, Okur V, Loaëc N, Ludwig T, Ka C, Tanji K, Marcorelles P, Theodorou E, Lignelli-Dipple A, Voisset C, Walker MA, Briere LC, Bourhis A, Blondel M, LeDuc C, Hagen J, Cooper C, Muraresku C, Ferec C, Garenne A, Lelez-Soquet S, Rogers CA, Shen Y, Strode DK, Bizargity P, Iglesias A, Goldstein A, High FA, Network UD, Sweetser DA, Ganetzky R, Van Hove JLK, Procaccio V, Le Marechal C, Chung WK. A homozygous splice variant in ATP5PO, disrupts mitochondrial complex V function and causes Leigh syndrome in two unrelated families. J Inherit Metab Dis 2022; 45:996-1012. [PMID: 35621276 PMCID: PMC9474623 DOI: 10.1002/jimd.12526] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/17/2022] [Accepted: 05/23/2022] [Indexed: 11/10/2022]
Abstract
Mitochondrial complex V plays an important role in oxidative phosphorylation by catalyzing the generation of ATP. Most complex V subunits are nuclear encoded and not yet associated with recognized Mendelian disorders. Using exome sequencing, we identified a rare homozygous splice variant (c.87+3A>G) in ATP5PO, the complex V subunit which encodes the oligomycin sensitivity conferring protein, in three individuals from two unrelated families, with clinical suspicion of a mitochondrial disorder. These individuals had a similar, severe infantile and often lethal multi-systemic disorder that included hypotonia, developmental delay, hypertrophic cardiomyopathy, progressive epileptic encephalopathy, progressive cerebral atrophy, and white matter abnormalities on brain MRI consistent with Leigh syndrome. cDNA studies showed a predominant shortened transcript with skipping of exon 2 and low levels of the normal full-length transcript. Fibroblasts from the affected individuals demonstrated decreased ATP5PO protein, defective assembly of complex V with markedly reduced amounts of peripheral stalk proteins, and complex V hydrolytic activity. Further, expression of human ATP5PO cDNA without exon 2 (hATP5PO-∆ex2) in yeast cells deleted for yATP5 (ATP5PO homolog) was unable to rescue growth on media which requires oxidative phosphorylation when compared to the wild type construct (hATP5PO-WT), indicating that exon 2 deletion leads to a non-functional protein. Collectively, our findings support the pathogenicity of the ATP5PO c.87+3A>G variant, which significantly reduces but does not eliminate complex V activity. These data along with the recent report of an affected individual with ATP5PO variants, add to the evidence that rare biallelic variants in ATP5PO result in defective complex V assembly, function and are associated with Leigh syndrome.
Collapse
Affiliation(s)
- Mythily Ganapathi
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, New York, USA
| | | | - Naig Gueguen
- MitoLab, UMR CNRS 6015 - INSERM U1083, MitoVasc Institute, Angers University Hospital, Angers, France
| | - Marisa W Friederich
- Section of Clinical Genetics and Metabolism, Department of Pediatrics, University of Colorado, Aurora, Colorado, USA
- Department of Pathology and Laboratory Medicine, Children's Hospital Colorado, Aurora, Colorado, USA
| | - Gerald Le Gac
- Univ Brest, Inserm, EFS, UMR1078, France
- CHRU de Brest, Service de Génétique Médicale et Biologie de la Reproduction, Laboratoire de Génétique Moléculaire et Histocompatibilité, France
| | - Volkan Okur
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | | | - Thomas Ludwig
- Univ Brest, Inserm, EFS, UMR1078, France
- CHRU de Brest, Service de Génétique Médicale et Biologie de la Reproduction, Laboratoire de Génétique Moléculaire et Histocompatibilité, France
| | - Chandran Ka
- Univ Brest, Inserm, EFS, UMR1078, France
- CHRU de Brest, Service de Génétique Médicale et Biologie de la Reproduction, Laboratoire de Génétique Moléculaire et Histocompatibilité, France
| | - Kurenai Tanji
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, New York, USA
| | - Pascale Marcorelles
- CHRU de Brest, Service d'anatomie cytologie pathologie, CHU et centre de référence des maladies neuromusculaires, Brest, France
| | - Evangelos Theodorou
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Division of Medical Genetics & Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Angela Lignelli-Dipple
- Department of Radiology, Columbia University Irving Medical Center, New York, New York, USA
| | | | - Melissa A Walker
- Division of Neurogenetics, Child Neurology, Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Lauren C Briere
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Amélie Bourhis
- CHRU de Brest, Service d'anatomie cytologie pathologie, CHU et centre de référence des maladies neuromusculaires, Brest, France
| | | | - Charles LeDuc
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Jacob Hagen
- Department of Biomedical Sciences, Columbia University Irving Medical Center, New York, New York, USA
| | - Cathleen Cooper
- Department of Radiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Colleen Muraresku
- Department of Pediatrics, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
- Mitochondrial Medicine Frontier Program, Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | | | | | | | - Cassandra A Rogers
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Yufeng Shen
- Department of Biomedical Sciences, Columbia University Irving Medical Center, New York, New York, USA
| | - Dana K Strode
- Section of Clinical Genetics and Metabolism, Department of Pediatrics, University of Colorado, Aurora, Colorado, USA
| | - Peyman Bizargity
- Division of Medical Genetics, Cohen Children's Medical Center, New York, New York, USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, New York, New York, USA
| | - Alejandro Iglesias
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Amy Goldstein
- Department of Pediatrics, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
- Mitochondrial Medicine Frontier Program, Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Frances A High
- Division of Medical Genetics & Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | - David A Sweetser
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
- Division of Medical Genetics & Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Rebecca Ganetzky
- Department of Pediatrics, Perelman School of Medicine, Philadelphia, Pennsylvania, USA
- Mitochondrial Medicine Frontier Program, Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Johan L K Van Hove
- Section of Clinical Genetics and Metabolism, Department of Pediatrics, University of Colorado, Aurora, Colorado, USA
- Department of Pathology and Laboratory Medicine, Children's Hospital Colorado, Aurora, Colorado, USA
| | - Vincent Procaccio
- MitoLab, UMR CNRS 6015 - INSERM U1083, MitoVasc Institute, Angers University Hospital, Angers, France
| | - Cedric Le Marechal
- Univ Brest, Inserm, EFS, UMR1078, France
- CHRU de Brest, Service de Génétique Médicale et Biologie de la Reproduction, Laboratoire de Génétique Moléculaire et Histocompatibilité, France
| | - Wendy K Chung
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
- Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA
| |
Collapse
|
3
|
Zawadzka M, Krygier M, Pawłowicz M, Wilke MVMB, Rutkowska K, Gueguen N, Desquiret-Dumas V, Klee EW, Schimmenti LA, Sławek J, Procaccio V, Płoski R, Mazurkiewicz-Bełdzińska M. Expanding the phenotype of DNAJC30-associated Leigh syndrome. Clin Genet 2022; 102:438-443. [PMID: 35861300 DOI: 10.1111/cge.14196] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 05/21/2022] [Revised: 07/16/2022] [Accepted: 07/18/2022] [Indexed: 11/28/2022]
Abstract
Leigh syndrome (LS) is a progressive neurodegenerative disease, characterized by extensive clinical, biochemical, and genetic heterogeneity. Recently, biallelic variants in DNAJC30 gene, encoding a protein crucial for the repair of mitochondrial complex I subunits, have been associated with Leber hereditary optic neuropathy and LS. It was suggested that clinical heterogeneity of DNAJC30-associated mitochondrial disease may be attributed to digenic inheritance. We describe three Polish patients, a 9-year-old boy, and female and male siblings, aged 17 and 11 years, with clinical and biochemical manifestations of LS. Exome sequencing (ES) identified a homozygous pathogenic variant in DNAJC30 c.152A>G, p.(Tyr51Cys) in the 9-year-old boy. In the siblings, ES identified two DNAJC30 variants: c.152A>G, p.(Tyr51Cys) and c.130_131del, p.(Ser44ValfsTer8) in a compound heterozygous state. In addition, both siblings carried a novel heterozygous c.484G>T, p.(Val162Leu) variant in NDUFS8 gene. This report provides further evidence for the association of DNAJC30 variants with LS. DNAJC30-associated LS is characterized by variable age at onset, movement disorder phenotype and normal or moderately elevated blood lactate level. Identification of a candidate heterozygous variant in NDUFS8 supports the hypothesis of digenic inheritance. Importantly, DNAJC30 pathogenic variants should be suspected in patients with LS irrespective of optic nerve involvement. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Marta Zawadzka
- Department of Developmental Neurology, Medical University of Gdansk, ul. Debinki 7, Gdansk, Poland
| | - Magdalena Krygier
- Department of Developmental Neurology, Medical University of Gdansk, ul. Debinki 7, Gdansk, Poland
| | - Małgorzata Pawłowicz
- Department of Clinical Pediatrics, Medical Faculty of Collegium Medicum, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland.,Department of Pediatric Neurogenetics and Rare Diseases, Prof. dr Stanislaw Popowski Regional Specialized Children's Hospital, Olsztyn 10-561, Poland, ERN-ITHACA Member
| | | | - Karolina Rutkowska
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Naig Gueguen
- Centre Hospitalier Universitaire, Département de Biochimie et Génétique, Angers, France; UMR CNRS 6214-INSERM 1083, Université d'Angers, Angers, France
| | - Valerie Desquiret-Dumas
- Centre Hospitalier Universitaire, Département de Biochimie et Génétique, Angers, France; UMR CNRS 6214-INSERM 1083, Université d'Angers, Angers, France
| | - Eric W Klee
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Lisa A Schimmenti
- Department of Clinical Genomics, Ophthalmology, Otorhinolaryngology, Head and Neck Surgery, Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Jarosław Sławek
- Department of Neurological and Psychiatric Nursing, Faculty of Health Sciences, Medical University of Gdansk, Gdansk, Poland.,Neurology Department, St Adalbert Hospital, Copernicus PL, Gdansk, Poland
| | - Vincent Procaccio
- Centre Hospitalier Universitaire, Département de Biochimie et Génétique, Angers, France; UMR CNRS 6214-INSERM 1083, Université d'Angers, Angers, France
| | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | | |
Collapse
|
4
|
Aurrière J, Goudenege D, Baechler SA, Huang SYN, Gueguen N, Desquiret-Dumas V, Chabrun F, Perrot R, Chevrollier A, Charif M, Baris OR, Pommier Y, Lenaers G, Khiati S. Cancer/Testis Antigen 55 is required for cancer cell proliferation and mitochondrial DNA maintenance. Mitochondrion 2022; 64:19-26. [PMID: 35189384 PMCID: PMC9057655 DOI: 10.1016/j.mito.2022.02.005] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 12/13/2022]
Abstract
Cancer/Testis Antigens (CTAs) represent a group of proteins whose expression under physiological conditions is restricted to testis but activated in many human cancers. Also, it was observed that co-expression of multiple CTAs worsens the patient prognosis. Five CTAs were reported acting in mitochondria and we recently reported 147 transcripts encoded by 67 CTAs encoding for proteins potentially targeted to mitochondria. Among them, we identified the two isoforms encoded by CT55 for whom the function is poorly understood. First, we found that patients with tumors expressing wild-type CT55 are associated with poor survival. Moreover, CT55 silencing decreases dramatically cell proliferation. Second, to investigate the role of CT55 on mitochondria, we first show that CT55 is localized to both mitochondria and endoplasmic reticulum (ER) due to the presence of an ambiguous N-terminal targeting signal. Then, we show that CT55 silencing decreases mtDNA copy number and delays mtDNA recovery after an acute depletion. Moreover, demethylation of CT55 promotor increases its expression, which in turn increases mtDNA copy number. Finally, we measured the mtDNA copy number in NCI-60 cell lines and screened for genes whose expression is strongly correlated to mtDNA amount. We identified CT55 as the second highest correlated hit. Also, we show that compared to siRNA scrambled control (siCtrl) treatment, CT55 specific siRNA (siCT55) treatment down-regulates aerobic respiration, indicating that CT55 sustains mitochondrial respiration. Altogether, these data show for first time that CT55 acts on mtDNA copy number, modulates mitochondrial activity to sustain cancer cell proliferation.
Collapse
Affiliation(s)
- Jade Aurrière
- MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers University, Angers, France
| | - David Goudenege
- MitoLab Team, Institut MitoVasc, CNRS UMR6015, INSERM U1083, Angers University, Angers, France; Departments of Biochemistry and Genetics, University Hospital Angers, Angers, France
| | - Simone A Baechler
- Laboratory of Molecular Pharmacology, Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Shar-Yin N Huang
- Laboratory of Molecular Pharmacology, Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Naig Gueguen
- MitoLab Team, Institut MitoVasc, CNRS UMR6015, INSERM U1083, Angers University, Angers, France; Departments of Biochemistry and Genetics, University Hospital Angers, Angers, France
| | - Valerie Desquiret-Dumas
- MitoLab Team, Institut MitoVasc, CNRS UMR6015, INSERM U1083, Angers University, Angers, France; Departments of Biochemistry and Genetics, University Hospital Angers, Angers, France
| | - Floris Chabrun
- MitoLab Team, Institut MitoVasc, CNRS UMR6015, INSERM U1083, Angers University, Angers, France; Departments of Biochemistry and Genetics, University Hospital Angers, Angers, France
| | - Rodolphe Perrot
- SCIAM, Institut de Biologie en Sante, Angers University, Angers 49933, France
| | - Arnaud Chevrollier
- MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers University, Angers, France
| | - Majida Charif
- MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers University, Angers, France
| | - Olivier R Baris
- MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers University, Angers, France
| | - Yves Pommier
- Laboratory of Molecular Pharmacology, Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Guy Lenaers
- MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers University, Angers, France
| | - Salim Khiati
- MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers University, Angers, France.
| |
Collapse
|
5
|
Zech M, Kopajtich R, Steinbrücker K, Bris C, Gueguen N, Feichtinger RG, Achleitner MT, Duzkale N, Périvier M, Koch J, Engelhardt H, Freisinger P, Wagner M, Brunet T, Berutti R, Smirnov D, Navaratnarajah T, Rodenburg RJ, Pais LS, Austin-Tse C, O’Leary M, Boesch S, Jech R, Bakhtiari S, Jin SC, Wilbert F, Kruer MC, Wortmann SB, Eckenweiler M, Mayr JA, Distelmaier F, Steinfeld R, Winkelmann J, Prokisch H. Variants in Mitochondrial ATP Synthase Cause Variable Neurologic Phenotypes. Ann Neurol 2022; 91:225-237. [PMID: 34954817 PMCID: PMC9939050 DOI: 10.1002/ana.26293] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 12/23/2021] [Accepted: 12/24/2021] [Indexed: 11/10/2022]
Abstract
OBJECTIVE ATP synthase (ATPase) is responsible for the majority of ATP production. Nevertheless, disease phenotypes associated with mutations in ATPase subunits are extremely rare. We aimed at expanding the spectrum of ATPase-related diseases. METHODS Whole-exome sequencing in cohorts with 2,962 patients diagnosed with mitochondrial disease and/or dystonia and international collaboration were used to identify deleterious variants in ATPase-encoding genes. Findings were complemented by transcriptional and proteomic profiling of patient fibroblasts. ATPase integrity and activity were assayed using cells and tissues from 5 patients. RESULTS We present 10 total individuals with biallelic or de novo monoallelic variants in nuclear ATPase subunit genes. Three unrelated patients showed the same homozygous missense ATP5F1E mutation (including one published case). An intronic splice-disrupting alteration in compound heterozygosity with a nonsense variant in ATP5PO was found in one patient. Three patients had de novo heterozygous missense variants in ATP5F1A, whereas another 3 were heterozygous for ATP5MC3 de novo missense changes. Bioinformatics methods and populational data supported the variants' pathogenicity. Immunohistochemistry, proteomics, and/or immunoblotting revealed significantly reduced ATPase amounts in association to ATP5F1E and ATP5PO mutations. Diminished activity and/or defective assembly of ATPase was demonstrated by enzymatic assays and/or immunoblotting in patient samples bearing ATP5F1A-p.Arg207His, ATP5MC3-p.Gly79Val, and ATP5MC3-p.Asn106Lys. The associated clinical profiles were heterogeneous, ranging from hypotonia with spontaneous resolution (1/10) to epilepsy with early death (1/10) or variable persistent abnormalities, including movement disorders, developmental delay, intellectual disability, hyperlactatemia, and other neurologic and systemic features. Although potentially reflecting an ascertainment bias, dystonia was common (7/10). INTERPRETATION Our results establish evidence for a previously unrecognized role of ATPase nuclear-gene defects in phenotypes characterized by neurodevelopmental and neurodegenerative features. ANN NEUROL 2022;91:225-237.
Collapse
Affiliation(s)
- Michael Zech
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Robert Kopajtich
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Katja Steinbrücker
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria
| | - Céline Bris
- Unité Mixte de Recherche MITOVASC, CNRS 6015/INSERM 1083, Université d'Angers, Angers, France,Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Naig Gueguen
- Unité Mixte de Recherche MITOVASC, CNRS 6015/INSERM 1083, Université d'Angers, Angers, France,Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - René G. Feichtinger
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria
| | - Melanie T. Achleitner
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria
| | - Neslihan Duzkale
- Department of Medical Genetic, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | | | - Johannes Koch
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria
| | - Harald Engelhardt
- Kinderkrankenhaus St. Marien gGmbH, Zentrum für Kinder- und Jugendmedizin, Landshut, Germany
| | | | - Matias Wagner
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Theresa Brunet
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Riccardo Berutti
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Dmitrii Smirnov
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Tharsini Navaratnarajah
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Richard J.T. Rodenburg
- Radboud Centre for Mitochondrial Medicine, Department of Paediatrics Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen Medical Centre Nijmegen, The Netherlands
| | - Lynn S Pais
- Program in Medical and Population Genetics, Broad Institute, Cambridge, Massachusetts, USA
| | - Christina Austin-Tse
- Harvard Medical School & Center for Genomic Medicine, Massachusetts General Hospital, Boston & Laboratory for Molecular Medicine, Partners Healthcare Personalized Medicine, Cambridge, MA
| | - Melanie O’Leary
- Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Sylvia Boesch
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Robert Jech
- Department of Neurology, Charles University, 1st Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Somayeh Bakhtiari
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, Arizona, USA,Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, Arizona, USA
| | - Sheng Chih Jin
- Department of Genetics, Washington University School of Medicine, St Louis, Missouri, USA,Department of Pediatrics, Washington University School of Medicine, St Louis, Missouri, USA
| | - Friederike Wilbert
- Department of Neuropediatrics and Muscle Disorders, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Michael C Kruer
- Pediatric Movement Disorders Program, Division of Pediatric Neurology, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, Arizona, USA,Departments of Child Health, Neurology, and Cellular & Molecular Medicine, and Program in Genetics, University of Arizona College of Medicine-Phoenix, Phoenix, Arizona, USA
| | - Saskia B. Wortmann
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria,Radboud Center for Mitochondrial Medicine, Department of Pediatrics, Amalia Children's Hospital, Radboudumc, Nijmegen, The Netherlands
| | - Matthias Eckenweiler
- Department of Neuropediatrics and Muscle Disorders, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Johannes A. Mayr
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria
| | - Felix Distelmaier
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Robert Steinfeld
- Department of Pediatric Neurology, University Children's Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Juliane Winkelmann
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany,Lehrstuhl für Neurogenetik, Technische Universität München, Munich, Germany,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Holger Prokisch
- Technical University of Munich, Munich, Germany; School of Medicine, Institute of Human Genetics,Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| |
Collapse
|
6
|
Bris C, Goudenège D, Desquiret-Dumas V, Gueguen N, Bannwarth S, Gaignard P, Rucheton B, Trimouille A, Allouche S, Rouzier C, Saadi S, Jardel C, Slama A, Barth M, Verny C, Spinazzi M, Cassereau J, Colin E, Armelle M, Pereon Y, Martin-Negrier ML, Paquis-Flucklinger V, Letournel F, Lenaers G, Bonneau D, Reynier P, Amati-Bonneau P, Procaccio V. Improved detection of mitochondrial DNA instability in mitochondrial genome maintenance disorders. Genet Med 2021; 23:1769-1778. [PMID: 34040194 DOI: 10.1038/s41436-021-01206-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Diseases caused by defects in mitochondrial DNA (mtDNA) maintenance machinery, leading to mtDNA deletions, form a specific group of disorders. However, mtDNA deletions also appear during aging, interfering with those resulting from mitochondrial disorders. METHODS Here, using next-generation sequencing (NGS) data processed by eKLIPse and data mining, we established criteria distinguishing age-related mtDNA rearrangements from those due to mtDNA maintenance defects. MtDNA deletion profiles from muscle and urine patient samples carrying pathogenic variants in nuclear genes involved in mtDNA maintenance (n = 40) were compared with age-matched controls (n = 90). Seventeen additional patient samples were used to validate the data mining model. RESULTS Overall, deletion number, heteroplasmy level, deletion locations, and the presence of repeats at deletion breakpoints were significantly different between patients and controls, especially in muscle samples. The deletion number was significantly relevant in adults, while breakpoint repeat lengths surrounding deletions were discriminant in young subjects. CONCLUSION Altogether, eKLIPse analysis is a powerful tool for measuring the accumulation of mtDNA deletions between patients of different ages, as well as in prioritizing novel variants in genes involved in mtDNA stability.
Collapse
Affiliation(s)
- Celine Bris
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - David Goudenège
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Valerie Desquiret-Dumas
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Naig Gueguen
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Sylvie Bannwarth
- Université Côte d'Azur, CHU de Nice, INSERM, CNRS, IRCAN, Nice, France
| | - Pauline Gaignard
- Service de Biochimie, CHU Bicêtre, APHP Université Paris Saclay, Le Kremlin-Bicêtre, France
| | - Benoit Rucheton
- Département de Biochimie et Génétique, APHP, GHU Pitié-Salpêtrière, Paris, France
| | - Aurelien Trimouille
- Service de Génétique médicale, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Stephane Allouche
- Service de Biochimie, EA4650, Centre Hospitalier Universitaire, Caen, France
| | - Cecile Rouzier
- Université Côte d'Azur, CHU de Nice, INSERM, CNRS, IRCAN, Nice, France
| | - Samira Saadi
- Université Côte d'Azur, CHU de Nice, INSERM, CNRS, IRCAN, Nice, France
| | - Claude Jardel
- Département de Biochimie et Génétique, APHP, GHU Pitié-Salpêtrière, Paris, France
| | - Abdel Slama
- Service de Biochimie, CHU Bicêtre, APHP Université Paris Saclay, Le Kremlin-Bicêtre, France
| | - Magalie Barth
- Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Christophe Verny
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Marco Spinazzi
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Julien Cassereau
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Estelle Colin
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Magot Armelle
- Centre de Référence Maladies Neuromusculaires, CHU Nantes, Nantes, France
| | - Yann Pereon
- Centre de Référence Maladies Neuromusculaires, CHU Nantes, Nantes, France
| | | | | | - Franck Letournel
- UF de Neurobiologie-Neuropathologie, UMR INSERM 1066 - CNRS 6021, MINT, Angers, France
| | - Guy Lenaers
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Dominique Bonneau
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Pascal Reynier
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Patrizia Amati-Bonneau
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, CHU d'Angers, Angers, France
| | - Vincent Procaccio
- MitoLab, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, Université d'Angers, Angers, France. .,Département de Biochimie et Génétique, CHU d'Angers, Angers, France.
| |
Collapse
|
7
|
Gueguen N, Piarroux J, Sarzi E, Benkirane M, Manes G, Delettre C, Amedro P, Leboucq N, Koenig M, Meyer P, Meunier I, Reynier P, Lenaers G, Roubertie A. Optic neuropathy linked to ACAD9 pathogenic variants: A potentially riboflavin-responsive disorder? Mitochondrion 2021; 59:169-174. [PMID: 34023438 DOI: 10.1016/j.mito.2021.05.002] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 12/14/2022]
Abstract
Mitochondrial complex I (CI) deficiencies (OMIM 252010) are the commonest inherited mitochondrial disorders in children. Acyl-CoA dehydrogenase 9 (ACAD9) is a flavoenzyme involved chiefly in CI assembly and possibly in fatty acid oxidation. Biallelic pathogenic variants result in CI dysfunction, with a phenotype ranging from early onset and sometimes fatal mitochondrial encephalopathy with lactic acidosis to late-onset exercise intolerance. Cardiomyopathy is often associated. We report a patient with childhood-onset optic and peripheral neuropathy without cardiac involvement, related to CI deficiency. Genetic analysis revealed compound heterozygous pathogenic variants in ACAD9, expanding the clinical spectrum associated to ACAD9 mutations. Importantly, riboflavin treatment (15 mg/kg/day) improved long-distance visual acuity and demonstrated significant rescue of CI activity in vitro.
Collapse
Affiliation(s)
- Naig Gueguen
- Department of Biochemistry and Molecular Biology, CHU Angers, 49933 Angers, France; University of Angers, Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, 49933 Angers, France
| | - Julie Piarroux
- CHU Montpellier, Département de Neuropédiatrie, Montpellier, France
| | - Emmanuelle Sarzi
- NeuroMyoGene Institute-UCBL/CNRS UMR5310/INSERM U1217-Lyon, France
| | - Mehdi Benkirane
- PhyMedExp, CNRS, INSERM, University of Montpellier, Montpellier, France; Laboratoire de Génétique Moléculaire, Institut Universitaire de Recherche Clinique, CHU de Montpellier, France
| | - Gael Manes
- INM, University Montpellier, INSERM, Montpellier, France
| | | | - Pascal Amedro
- PhyMedExp, CNRS, INSERM, University of Montpellier, Montpellier, France; Pediatric and Adult Congenital Cardiology Department, M3C Rare Cardiac Disease Reference Center, CHU Montpellier, France
| | - Nicolas Leboucq
- Département de Neuroradiologie, CHU Montpellier, Montpellier, France
| | - Michel Koenig
- PhyMedExp, CNRS, INSERM, University of Montpellier, Montpellier, France; Laboratoire de Génétique Moléculaire, Institut Universitaire de Recherche Clinique, CHU de Montpellier, France
| | - Pierre Meyer
- CHU Montpellier, Département de Neuropédiatrie, Montpellier, France; PhyMedExp, CNRS, INSERM, University of Montpellier, Montpellier, France
| | - Isabelle Meunier
- National Center in Rare Diseases, Genetics of Sensory Diseases, University Hospital, Montpellier, France
| | - Pascal Reynier
- Department of Biochemistry and Molecular Biology, CHU Angers, 49933 Angers, France; University of Angers, Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, 49933 Angers, France
| | - Guy Lenaers
- University of Angers, Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, 49933 Angers, France
| | - Agathe Roubertie
- CHU Montpellier, Département de Neuropédiatrie, Montpellier, France; INM, University Montpellier, INSERM, Montpellier, France; National Center in Rare Diseases, Genetics of Sensory Diseases, University Hospital, Montpellier, France.
| |
Collapse
|
8
|
Gueguen N, Baris O, Lenaers G, Reynier P, Spinazzi M. Secondary coenzyme Q deficiency in neurological disorders. Free Radic Biol Med 2021; 165:203-218. [PMID: 33450382 DOI: 10.1016/j.freeradbiomed.2021.01.017] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 12/13/2022]
Abstract
Coenzyme Q (CoQ) is a ubiquitous lipid serving essential cellular functions. It is the only component of the mitochondrial respiratory chain that can be exogenously absorbed. Here, we provide an overview of current knowledge, controversies, and open questions about CoQ intracellular and tissue distribution, in particular in brain and skeletal muscle. We discuss human neurological diseases and mouse models associated with secondary CoQ deficiency in these tissues and highlight pharmacokinetic and anatomical challenges in exogenous CoQ biodistribution, recent improvements in CoQ formulations and imaging, as well as alternative therapeutical strategies to CoQ supplementation. The last section proposes possible mechanisms underlying secondary CoQ deficiency in human diseases with emphasis on neurological and neuromuscular disorders.
Collapse
Affiliation(s)
- Naig Gueguen
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France; Department of Biochemistry and Molecular Biology, CHU Angers, 49933, Angers, France
| | - Olivier Baris
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France
| | - Guy Lenaers
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France
| | - Pascal Reynier
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France; Department of Biochemistry and Molecular Biology, CHU Angers, 49933, Angers, France
| | - Marco Spinazzi
- Unité Mixte de Recherche (UMR) MITOVASC, Centre National de la Recherche Scientifique (CNRS) 6015, Institut National de la Santé et de la Recherche Médicale (INSERM) U1083, University of Angers, 49933, Angers, France; Neuromuscular Reference Center, Department of Neurology, CHU Angers, 49933, Angers, France.
| |
Collapse
|
9
|
Gueguen N, Lenaers G, Reynier P, Weissig V, Edeas M. Mitochondrial Dysfunction in Mitochondrial Medicine: Current Limitations, Pitfalls, and Tomorrow. Methods Mol Biol 2021; 2276:1-29. [PMID: 34060029 DOI: 10.1007/978-1-0716-1266-8_1] [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] [Indexed: 01/11/2023]
Abstract
Until recently restricted to hereditary mitochondrial diseases, mitochondrial dysfunction is now recognized as a key player and strategic factor in the pathophysiological of many human diseases, ranging from the metabolism, vascular, cardiac, and neurodegenerative diseases to cancer. Because of their participation in a myriad of cellular functions and signaling pathways, precisely identifying the cause of mitochondrial "dysfunctions" can be challenging and requires robust and controlled techniques. Initially limited to the analysis of the respiratory chain functioning, these analytical techniques now enlarge to the analyses of mitochondrial and cellular metabolism, based on metabolomic approaches.Here, we address the methods used to assay mitochondrial dysfunction, with a highlight on the techniques used in diagnosis on tissues and cells derived from patients, the information they provide, and their strength and weakness.Targeting mitochondrial dysfunction by various strategies is a huge challenge, requires robust methods of evaluation, and should be able to take into consideration the mitochondria dynamics and localization. The future of mitochondrial medicine is strongly related to a perfect comprehension of its dysfunction.
Collapse
Affiliation(s)
- Naig Gueguen
- UMR CNRS 6015-INSERM U1083, MitoVasc Institute, University of Angers, Angers, France.,Department of Biochemistry and Genetics, University Hospital of Angers, Angers, France
| | - Guy Lenaers
- UMR CNRS 6015-INSERM U1083, MitoVasc Institute, University of Angers, Angers, France
| | - Pascal Reynier
- UMR CNRS 6015-INSERM U1083, MitoVasc Institute, University of Angers, Angers, France.,Department of Biochemistry and Genetics, University Hospital of Angers, Angers, France
| | - Volkmar Weissig
- Department of Pharmaceutical Sciences and Nanocenter of Excellence, Midwestern University College of Pharmacy at Glendale, Glendale, AZ, USA
| | - Marvin Edeas
- Université de Paris, INSERM U1016, Institut Cochin, CNRS UMR8104, Paris, France. .,Laboratory of Excellence GR-Ex, Paris, France.
| |
Collapse
|
10
|
Barcia G, Rio M, Assouline Z, Zangarelli C, Gueguen N, Dumas VD, Marcorelles P, Schiff M, Slama A, Barth M, Hully M, de Lonlay P, Munnich A, Desguerre I, Bonnefont JP, Steffann J, Procaccio V, Boddaert N, Rötig A, Metodiev MD, Ruzzenente B. Clinical, neuroimaging and biochemical findings in patients and patient fibroblasts expressing ten novel GFM1 mutations. Hum Mutat 2019; 41:397-402. [PMID: 31680380 DOI: 10.1002/humu.23937] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 06/16/2019] [Revised: 10/12/2019] [Accepted: 10/16/2019] [Indexed: 12/12/2022]
Abstract
Pathogenic GFM1 variants have been linked to neurological phenotypes with or without liver involvement, but only a few cases have been reported in the literature. Here, we report clinical, biochemical, and neuroimaging findings from nine unrelated children carrying GFM1 variants, 10 of which were not previously reported. All patients presented with neurological involvement-mainly axial hypotonia and dystonia during the neonatal period-with five diagnosed with West syndrome; two children had liver involvement with cytolysis episodes or hepatic failure. While two patients died in infancy, six exhibited a stable clinical course. Brain magnetic resonance imaging showed the involvement of basal ganglia, brainstem, and periventricular white matter. Mutant EFG1 and OXPHOS proteins were decreased in patient's fibroblasts consistent with impaired mitochondrial translation. Thus, we expand the genetic spectrum of GFM1-linked disease and provide detailed clinical profiles of the patients that will improve the diagnostic success for other patients carrying GFM1 mutations.
Collapse
Affiliation(s)
- Giulia Barcia
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.,Department of Genetics, Reference Center for Mitochondrial Diseases (CARAMMEL), Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Marlène Rio
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.,Department of Genetics, Reference Center for Mitochondrial Diseases (CARAMMEL), Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Zahra Assouline
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.,Department of Genetics, Reference Center for Mitochondrial Diseases (CARAMMEL), Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Coralie Zangarelli
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - Naig Gueguen
- UMR CNRS 6015-INSERM U1083, MitoVasc Institute, Angers University, Angers, France
| | - Valerie D Dumas
- UMR CNRS 6015-INSERM U1083, MitoVasc Institute, Angers University, Angers, France
| | | | - Manuel Schiff
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.,Reference Center for Inherited Metabolic Diseases, Robert Debré Hospital, Paris, France
| | - Abdelhamid Slama
- Biochemistry laboratory, Bicêtre Hospital, Le Kremlin Bicêtre, France
| | - Magalie Barth
- UMR CNRS 6015-INSERM U1083, MitoVasc Institute, Angers University, Angers, France
| | - Marie Hully
- Department of Pediatric Neurology, Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Pascale de Lonlay
- Reference Center for Inherited Metabolic Diseases, Necker Enfants Malades Hospital, Imagine Institute, Paris Descartes University, INEM-1151, G2M, MetabERN, Paris, France
| | - Arnold Munnich
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.,Department of Genetics, Reference Center for Mitochondrial Diseases (CARAMMEL), Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Isabelle Desguerre
- Department of Pediatric Neurology, Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Jean-Paul Bonnefont
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.,Department of Genetics, Reference Center for Mitochondrial Diseases (CARAMMEL), Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Julie Steffann
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.,Department of Genetics, Reference Center for Mitochondrial Diseases (CARAMMEL), Necker Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Vincent Procaccio
- UMR CNRS 6015-INSERM U1083, MitoVasc Institute, Angers University, Angers, France
| | - Nathalie Boddaert
- Department of Pediatric Radiology, INSERM UMR 1163, INSERM U1000, Necker Enfants Malades Hospital, Imagine Institute, Université Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - Agnès Rötig
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - Metodi D Metodiev
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - Benedetta Ruzzenente
- Laboratory for Genetics of Mitochondrial Disorders, INSERM U1163, Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| |
Collapse
|
11
|
Chadefaux D, Gueguen N, Thouze A, Rao G. 3D propagation of the shock-induced vibrations through the whole lower-limb during running. J Biomech 2019; 96:109343. [PMID: 31558309 DOI: 10.1016/j.jbiomech.2019.109343] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 09/10/2019] [Accepted: 09/11/2019] [Indexed: 11/30/2022]
Affiliation(s)
- D Chadefaux
- Aix-Marseille Univ, CNRS, ISM, Marseille, France; Université Paris 13 - Institut de Biomécanique Humaine Georges Charpak (EA 4494), Paris, France.
| | - N Gueguen
- Department of Movement Sciences, Décathlon, Villeneuve d'Ascq, France
| | - A Thouze
- Department of Movement Sciences, Décathlon, Villeneuve d'Ascq, France
| | - G Rao
- Aix-Marseille Univ, CNRS, ISM, Marseille, France
| |
Collapse
|
12
|
Bousseau S, Marchand M, Soleti R, Vergori L, Hilairet G, Recoquillon S, Le Mao M, Gueguen N, Khiati S, Clarion L, Bakalara N, Martinez MC, Germain S, Lenaers G, Andriantsitohaina R. Phostine 3.1a as a pharmacological compound with antiangiogenic properties against diseases with excess vascularization. FASEB J 2019; 33:5864-5875. [PMID: 30817178 DOI: 10.1096/fj.201801450rrr] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Angiogenesis is a complex process leading to the growth of new blood vessels from existing vasculature, triggered by local proangiogenic factors such as VEGF. An excess of angiogenesis is a recurrent feature of various pathologic conditions such as tumor growth. Phostines are a family of synthetic glycomimetic compounds that exhibit anticancer properties, and the lead compound 3-hydroxy-4,5-bis-benzyloxy-6-benzyloxymethyl-2-phenyl2-oxo-2λ5-[1,2]oxaphosphinane (PST 3.1a) shows antiglioblastoma properties both in vitro and in vivo. In the present study, we assessed the effect of PST 3.1a on angiogenesis and endothelial metabolism. In vitro, PST 3.1a (10 µM) inhibited all steps that regulate angiogenesis, including migration, proliferation, adhesion, and tube formation. In vivo, PST 3.1a reduced intersegmental vessel formation and vascularization of the subintestinal plexus in zebrafish embryos and also altered pathologic angiogenesis and glioblastoma progression in vivo. Mechanistically, PST 3.1a altered interaction of VEGF receptor 2 and glycosylation-regulating protein galectin-1, a key component regulating angiogenesis associated with tumor resistance. Thus, these data show that use of PST 3.1a is an innovative approach to target angiogenesis.-Bousseau, S., Marchand, M., Soleti, R., Vergori, L., Hilairet, G., Recoquillon, S., Le Mao, M., Gueguen, N., Khiati, S., Clarion, L., Bakalara, N., Martinez, M. C., Germain, S., Lenaers, G., Andriantsitohaina, R. Phostine 3.1a as a pharmacological compound with antiangiogenic properties against diseases with excess vascularization.
Collapse
Affiliation(s)
- Simon Bousseau
- INSERM Unité Mixte de Recherche (UMR) 1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Angers, France.,MitoLab, Centre National de la Recherche (CNRS) Unité Mixte de Recherche (UMR) 6015, INSERM Unité 1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Marion Marchand
- Center for Interdisciplinary Research in Biology (CIRB), Collège de France, Centre National de la Recherche (CNRS), INSERM, Paris Sciences et Lettres (PSL) Research University, Paris, France
| | - Raffaella Soleti
- INSERM Unité Mixte de Recherche (UMR) 1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Angers, France
| | - Luisa Vergori
- INSERM Unité Mixte de Recherche (UMR) 1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Angers, France
| | - Grégory Hilairet
- INSERM Unité Mixte de Recherche (UMR) 1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Angers, France
| | - Sylvain Recoquillon
- INSERM Unité Mixte de Recherche (UMR) 1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Angers, France
| | - Morgane Le Mao
- MitoLab, Centre National de la Recherche (CNRS) Unité Mixte de Recherche (UMR) 6015, INSERM Unité 1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Naig Gueguen
- MitoLab, Centre National de la Recherche (CNRS) Unité Mixte de Recherche (UMR) 6015, INSERM Unité 1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Salim Khiati
- MitoLab, Centre National de la Recherche (CNRS) Unité Mixte de Recherche (UMR) 6015, INSERM Unité 1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Ludovic Clarion
- Phost'in SAS (société par actions simplifiée), Montpellier, France
| | - Norbert Bakalara
- INSERM Unité 1051, Institut des Neurosciences de Montpellier, Montpellier, France
| | - M Carmen Martinez
- INSERM Unité Mixte de Recherche (UMR) 1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Angers, France
| | - Stéphane Germain
- Center for Interdisciplinary Research in Biology (CIRB), Collège de France, Centre National de la Recherche (CNRS), INSERM, Paris Sciences et Lettres (PSL) Research University, Paris, France
| | - Guy Lenaers
- MitoLab, Centre National de la Recherche (CNRS) Unité Mixte de Recherche (UMR) 6015, INSERM Unité 1083, Institut MitoVasc, Université d'Angers, Angers, France
| | - Ramaroson Andriantsitohaina
- INSERM Unité Mixte de Recherche (UMR) 1063, Stress Oxydant et Pathologies Métaboliques, Université d'Angers, Angers, France
| |
Collapse
|
13
|
Signolet I, Abraham P, Chupin S, Ammi M, Gueguen N, Letournel F, Picquet J, Baufreton C, Daligault M, Procaccio V, Reynier P, Henni S. Mitochondrial complex I defect resulting from exercise-induced lower limb ischemia in patients with peripheral arterial disease. J Appl Physiol (1985) 2018; 125:938-946. [PMID: 29792553 DOI: 10.1152/japplphysiol.00059.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 11/22/2022] Open
Abstract
This study aims to compare the structural and mitochondrial alterations between muscle segments affected by exercise-induced ischemia and segments of the same muscle without ischemia, in the same subject. In a prospective analysis, 34 patients presenting either peripheral arterial disease or chronic coronary syndrome without any evidence of peripheral arterial disease were eligible for inclusion based on findings indicating a need for either a femoro-popliteal bypass or a saphenous harvesting for coronary bypass. Before surgery, we assessed the level of exercise-induced ischemia in proximal and distal sections of the thigh by the measurement of transcutaneous oxygen pressure during an exercise treadmill test. Distal and proximal biopsies of the sartorius muscle were procured during vascular surgical procedures to assess mitochondrial function and morphometric parameters of the sartorius myofibers. Comparisons were made between the distal and proximal biopsies, with respect to these parameters. Thirteen of the study patients that initially presented with peripheral arterial disease had evidence of an isolated distal thigh exercise-induced ischemia, associated with a 35% decrease in the mitochondrial complex I enzymatic activity in the distal muscle biopsy. This defect was also associated with a decreased expression of the manganese superoxide dismutase enzyme and with alterations of the shapes of the myofibers. No functional or structural alterations were observed in the patients with coronary syndrome. We validated a specific model ischemia in peripheral arterial disease characterized by muscular alterations. This "Distal-Proximal-Sartorius Model" would be promising to explore the physiopathological consequences specific to chronic ischemia. NEW & NOTEWORTHY We compared proximal versus distal biopsies of the sartorius muscle in patients with superficial femoral artery stenosis or occlusion and proof of, distal only, regional blood flow impairment with exercise oximetry. We identified a decrease in the mitochondrial complex I enzymatic activity and antioxidant system impairment at the distal level only. We validate a model to explore the physiopathological consequences of chronic muscle ischemia.
Collapse
Affiliation(s)
- I Signolet
- Laboratory for Vascular Investigation, University Hospital , Angers , France.,Department of Biochemistry and Genetics, University Hospital , Angers , France
| | - P Abraham
- Laboratory for Vascular Investigation, University Hospital , Angers , France.,Mitovasc Institute, CNRS 6015, INSERM U1083, University of Angers , Angers , France
| | - S Chupin
- Department of Biochemistry and Genetics, University Hospital , Angers , France.,Mitovasc Institute, CNRS 6015, INSERM U1083, University of Angers , Angers , France
| | - M Ammi
- Department of Vascular Surgery, University Hospital , Angers , France
| | - N Gueguen
- Department of Biochemistry and Genetics, University Hospital , Angers , France.,Mitovasc Institute, CNRS 6015, INSERM U1083, University of Angers , Angers , France
| | - F Letournel
- Department of Tissue and Cellular Pathology, University Hospital , Angers , France
| | - J Picquet
- Department of Vascular Surgery, University Hospital , Angers , France
| | - C Baufreton
- Department of Cardiac Surgery, University Hospital , Angers , France
| | - M Daligault
- Department of Vascular Surgery, University Hospital , Angers , France
| | - V Procaccio
- Department of Biochemistry and Genetics, University Hospital , Angers , France.,Mitovasc Institute, CNRS 6015, INSERM U1083, University of Angers , Angers , France
| | - P Reynier
- Department of Biochemistry and Genetics, University Hospital , Angers , France.,Mitovasc Institute, CNRS 6015, INSERM U1083, University of Angers , Angers , France
| | - S Henni
- Laboratory for Vascular Investigation, University Hospital , Angers , France.,Mitovasc Institute, CNRS 6015, INSERM U1083, University of Angers , Angers , France
| |
Collapse
|
14
|
Bris C, Rouaud T, Desquiret-Dumas V, Gueguen N, Goudenege D, Barth M, Bonneau D, Amati-Bonneau P, Lenaers G, Reynier P, Lebre AS, Procaccio V. Novel NDUFS4 gene mutation in an atypical late-onset mitochondrial form of multifocal dystonia. Neurol Genet 2017; 3:e205. [PMID: 29264396 PMCID: PMC5733248 DOI: 10.1212/nxg.0000000000000205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 09/26/2017] [Indexed: 12/04/2022]
Affiliation(s)
- Celine Bris
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Tiphaine Rouaud
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Valerie Desquiret-Dumas
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Naig Gueguen
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - David Goudenege
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Magalie Barth
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Dominique Bonneau
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Patrizia Amati-Bonneau
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Guy Lenaers
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Pascal Reynier
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Anne-Sophie Lebre
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Vincent Procaccio
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| |
Collapse
|
15
|
Wakim J, Goudenege D, Perrot R, Gueguen N, Desquiret-Dumas V, Chao de la Barca JM, Dalla Rosa I, Manero F, Le Mao M, Chupin S, Chevrollier A, Procaccio V, Bonneau D, Logan DC, Reynier P, Lenaers G, Khiati S. CLUH couples mitochondrial distribution to the energetic and metabolic status. J Cell Sci 2017; 130:1940-1951. [PMID: 28424233 DOI: 10.1242/jcs.201616] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 04/12/2017] [Indexed: 12/13/2022] Open
Abstract
Mitochondrial dynamics and distribution are critical for supplying ATP in response to energy demand. CLUH is a protein involved in mitochondrial distribution whose dysfunction leads to mitochondrial clustering, the metabolic consequences of which remain unknown. To gain insight into the role of CLUH on mitochondrial energy production and cellular metabolism, we have generated CLUH-knockout cells using CRISPR/Cas9. Mitochondrial clustering was associated with a smaller cell size and with decreased abundance of respiratory complexes, resulting in oxidative phosphorylation (OXPHOS) defects. This energetic impairment was found to be due to the alteration of mitochondrial translation and to a metabolic shift towards glucose dependency. Metabolomic profiling by mass spectroscopy revealed an increase in the concentration of some amino acids, indicating a dysfunctional Krebs cycle, and increased palmitoylcarnitine concentration, indicating an alteration of fatty acid oxidation, and a dramatic decrease in the concentrations of phosphatidylcholine and sphingomyeline, consistent with the decreased cell size. Taken together, our study establishes a clear function for CLUH in coupling mitochondrial distribution to the control of cell energetic and metabolic status.
Collapse
Affiliation(s)
- Jamal Wakim
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - David Goudenege
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Rodolphe Perrot
- SCIAM, Institut de Biologie en Sante, Université d'Angers, Angers 49933, France
| | - Naig Gueguen
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Valerie Desquiret-Dumas
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | | | | | - Florence Manero
- SCIAM, Institut de Biologie en Sante, Université d'Angers, Angers 49933, France
| | - Morgane Le Mao
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Stephanie Chupin
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Arnaud Chevrollier
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Vincent Procaccio
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Dominique Bonneau
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - David C Logan
- MitoStress team, IRHS, Université d'Angers, Agrocampus-Ouest, INRA, SFR QuaSaV, Beaucouzé 49071, France
| | - Pascal Reynier
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Guy Lenaers
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| | - Salim Khiati
- Equipe MitoLab, Institut MitoVasc, Université d'Angers, UMR CNRS 6015, INSERM U1083, Angers, 49933 France
| |
Collapse
|
16
|
Frey S, Geffroy G, Desquiret-Dumas V, Gueguen N, Bris C, Belal S, Amati-Bonneau P, Chevrollier A, Barth M, Henrion D, Lenaers G, Bonneau D, Reynier P, Procaccio V. The addition of ketone bodies alleviates mitochondrial dysfunction by restoring complex I assembly in a MELAS cellular model. Biochim Biophys Acta Mol Basis Dis 2016; 1863:284-291. [PMID: 27815040 DOI: 10.1016/j.bbadis.2016.10.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 10/24/2016] [Accepted: 10/29/2016] [Indexed: 02/07/2023]
Abstract
Ketogenic Diet used to treat refractory epilepsy for almost a century may represent a treatment option for mitochondrial disorders for which effective treatments are still lacking. Mitochondrial complex I deficiencies are involved in a broad spectrum of inherited diseases including Mitochondrial Encephalomyopathy, Lactic Acidosis and Stroke-like episodes syndrome leading to recurrent cerebral insults resembling strokes and associated with a severe complex I deficiency caused by mitochondrial DNA (mtDNA) mutations. The analysis of MELAS neuronal cybrid cells carrying the almost homoplasmic m.3243A>G mutation revealed a metabolic switch towards glycolysis with the production of lactic acid, severe defects in respiratory chain activity and complex I disassembly with an accumulation of assembly intermediates. Metabolites, NADH/NAD+ ratio, mitochondrial enzyme activities, oxygen consumption and BN-PAGE analysis were evaluated in mutant compared to control cells. A severe complex I enzymatic deficiency was identified associated with a major complex I disassembly with an accumulation of assembly intermediates of 400kDa. We showed that Ketone Bodies (KB) exposure for 4weeks associated with glucose deprivation significantly restored complex I stability and activity, increased ATP synthesis and reduced the NADH/NAD+ ratio, a key component of mitochondrial metabolism. In addition, without changing the mutant load, mtDNA copy number was significantly increased with KB, indicating that the absolute amount of wild type mtDNA copy number was higher in treated mutant cells. Therefore KB may constitute an alternative and promising therapy for MELAS syndrome, and could be beneficial for other mitochondrial diseases caused by complex I deficiency.
Collapse
Affiliation(s)
- Samuel Frey
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Guillaume Geffroy
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Valerie Desquiret-Dumas
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Naig Gueguen
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Celine Bris
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Sophie Belal
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Patrizia Amati-Bonneau
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Arnaud Chevrollier
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Magalie Barth
- Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Daniel Henrion
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Guy Lenaers
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Dominique Bonneau
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Pascal Reynier
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Vincent Procaccio
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France.
| |
Collapse
|
17
|
Angebault C, Guichet PO, Talmat-Amar Y, Charif M, Gerber S, Fares-Taie L, Gueguen N, Halloy F, Moore D, Amati-Bonneau P, Manes G, Hebrard M, Bocquet B, Quiles M, Piro-Mégy C, Teigell M, Delettre C, Rossel M, Meunier I, Preising M, Lorenz B, Carelli V, Chinnery PF, Yu-Wai-Man P, Kaplan J, Roubertie A, Barakat A, Bonneau D, Reynier P, Rozet JM, Bomont P, Hamel CP, Lenaers G. Recessive Mutations in RTN4IP1 Cause Isolated and Syndromic Optic Neuropathies. Am J Hum Genet 2015; 97:754-60. [PMID: 26593267 DOI: 10.1016/j.ajhg.2015.09.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 09/25/2015] [Indexed: 12/28/2022] Open
Abstract
Autosomal-recessive optic neuropathies are rare blinding conditions related to retinal ganglion cell (RGC) and optic-nerve degeneration, for which only mutations in TMEM126A and ACO2 are known. In four families with early-onset recessive optic neuropathy, we identified mutations in RTN4IP1, which encodes a mitochondrial ubiquinol oxydo-reductase. RTN4IP1 is a partner of RTN4 (also known as NOGO), and its ortholog Rad8 in C. elegans is involved in UV light response. Analysis of fibroblasts from affected individuals with a RTN4IP1 mutation showed loss of the altered protein, a deficit of mitochondrial respiratory complex I and IV activities, and increased susceptibility to UV light. Silencing of RTN4IP1 altered the number and morphogenesis of mouse RGC dendrites in vitro and the eye size, neuro-retinal development, and swimming behavior in zebrafish in vivo. Altogether, these data point to a pathophysiological mechanism responsible for RGC early degeneration and optic neuropathy and linking RTN4IP1 functions to mitochondrial physiology, response to UV light, and dendrite growth during eye maturation.
Collapse
Affiliation(s)
- Claire Angebault
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Pierre-Olivier Guichet
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Yasmina Talmat-Amar
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Majida Charif
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - Sylvie Gerber
- INSERM U1163, Hôpital Necker Enfants-Malades, 75015 Paris, France
| | - Lucas Fares-Taie
- INSERM U1163, Hôpital Necker Enfants-Malades, 75015 Paris, France
| | - Naig Gueguen
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - François Halloy
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - David Moore
- Institute of Genetic Medicine, Centre for Life, Newcastle University and Wellcome Trust Centre for Mitochondrial Research, NE1 3BZ Newcastle upon Tyne, UK
| | - Patrizia Amati-Bonneau
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - Gael Manes
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Maxime Hebrard
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Béatrice Bocquet
- Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Mélanie Quiles
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Camille Piro-Mégy
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Marisa Teigell
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Cécile Delettre
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Mireille Rossel
- INSERM U710, Laboratoire MMDN EPHE, 34090 Montpellier, France
| | - Isabelle Meunier
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Markus Preising
- Department of Ophthalmology, Justus-Liebig University, 35392 Giessen, Germany
| | - Birgit Lorenz
- Department of Ophthalmology, Justus-Liebig University, 35392 Giessen, Germany
| | - Valerio Carelli
- IRCCS, Institute of Neurological Sciences of Bologna, Bellaria Hospital, 40139 Bologna, Italy; Department of Biomedical and NeuroMotor Sciences, University of Bologna, 40139 Bologna, Italy
| | - Patrick F Chinnery
- Institute of Genetic Medicine, Centre for Life, Newcastle University and Wellcome Trust Centre for Mitochondrial Research, NE1 3BZ Newcastle upon Tyne, UK
| | - Patrick Yu-Wai-Man
- Institute of Genetic Medicine, Centre for Life, Newcastle University and Wellcome Trust Centre for Mitochondrial Research, NE1 3BZ Newcastle upon Tyne, UK; Newcastle Eye Centre, Royal Victoria Infirmary, NE1 4LP Newcastle upon Tyne, UK
| | - Josseline Kaplan
- INSERM U1163, Hôpital Necker Enfants-Malades, 75015 Paris, France
| | - Agathe Roubertie
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, 20360 Casablanca, Morocco
| | - Dominique Bonneau
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - Pascal Reynier
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | | | - Pascale Bomont
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Christian P Hamel
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Guy Lenaers
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France.
| |
Collapse
|
18
|
Le Flao E, Imbert C, Wloch H, Gueguen N. Perceived grip, balance and comfort of yoga and gym mats correlate with biomechanical and mechanical assessment. Comput Methods Biomech Biomed Engin 2015; 18:1980-1981. [DOI: 10.1080/10255842.2015.1069585] [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: 10/23/2022]
Affiliation(s)
- E. Le Flao
- Decathlon SportsLab, Decathlon, Villeneuve d’Ascq, France
| | - C. Imbert
- Heavy Stitching Process, Decathlon, Villeneuve d’Ascq, France
| | - H. Wloch
- Heavy Stitching Process, Decathlon, Villeneuve d’Ascq, France
| | - N. Gueguen
- Decathlon SportsLab, Decathlon, Villeneuve d’Ascq, France
| |
Collapse
|
19
|
Charif M, Titah SMC, Roubertie A, Desquiret-Dumas V, Gueguen N, Meunier I, Leid J, Massal F, Zanlonghi X, Mercier J, Raynaud de Mauverger E, Procaccio V, Mousson de Camaret B, Lenaers G, Hamel CP. Optic neuropathy, cardiomyopathy, cognitive disability in patients with a homozygous mutation in the nuclear MTO1 and a mitochondrial MT-TF variant. Am J Med Genet A 2015; 167A:2366-74. [PMID: 26061759 DOI: 10.1002/ajmg.a.37188] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 10/27/2014] [Accepted: 05/15/2015] [Indexed: 11/08/2022]
Abstract
We report on clinical, genetic and metabolic investigations in a family with optic neuropathy, non-progressive cardiomyopathy and cognitive disability. Ophthalmic investigations (slit lamp examination, funduscopy, OCT scan of the optic nerve, ERG and VEP) disclosed mild or no decreased visual acuity, but pale optic disc, loss of temporal optic fibers and decreased VEPs. Mitochondrial DNA and exome sequencing revealed a novel homozygous mutation in the nuclear MTO1 gene and the homoplasmic m.593T>G mutation in the mitochondrial MT-TF gene. Muscle biopsy analyses revealed decreased oxygraphic Vmax values for complexes I+III+IV, and severely decreased activities of the respiratory chain complexes (RCC) I, III and IV, while muscle histopathology was normal. Fibroblast analysis revealed decreased complex I and IV activity and assembly, while cybrid analysis revealed a partial complex I deficiency with normal assembly of the RCC. Thus, in patients with a moderate clinical presentation due to MTO1 mutations, the presence of an optic atrophy should be considered. The association with the mitochondrial mutation m.593T>G could act synergistically to worsen the complex I deficiency and modulate the MTO1-related disease.
Collapse
Affiliation(s)
- Majida Charif
- INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France.,Université Montpellier 1, Montpellier, France.,Université Montpellier 2, Montpellier, France
| | | | - Agathe Roubertie
- CHRU Montpellier, Service de Neuropédiatrie, Montpellier, France
| | - Valérie Desquiret-Dumas
- Département de Biochimie et Génétique, CHRU Angers, Angers, France.,UMR CNRS 6214-INSERM U1083, Université Angers, Angers, France
| | - Naig Gueguen
- Département de Biochimie et Génétique, CHRU Angers, Angers, France.,UMR CNRS 6214-INSERM U1083, Université Angers, Angers, France
| | - Isabelle Meunier
- INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France.,Université Montpellier 1, Montpellier, France.,Université Montpellier 2, Montpellier, France.,CHRU Montpellier, Centre de Référence Maladies Sensorielles Génétiques, Montpellier, France
| | - Jean Leid
- Ophthalmology, Eye Center, Pau, France
| | | | | | - Jacques Mercier
- CHRU Montpellier, CERAMM, Montpellier, France.,INSERM U1046, Médecine et Physiologie Expérimentale du Cœur et des Muscles, Montpellier, France
| | - Eric Raynaud de Mauverger
- CHRU Montpellier, CERAMM, Montpellier, France.,INSERM U1046, Médecine et Physiologie Expérimentale du Cœur et des Muscles, Montpellier, France
| | - Vincent Procaccio
- Département de Biochimie et Génétique, CHRU Angers, Angers, France.,UMR CNRS 6214-INSERM U1083, Université Angers, Angers, France
| | - Bénédicte Mousson de Camaret
- Service des Maladies Héréditaires du Métabolisme, Centre de Biologie et de Pathologie Est, CHU Lyon, Bron, France
| | - Guy Lenaers
- INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France.,Université Montpellier 1, Montpellier, France.,Université Montpellier 2, Montpellier, France
| | - Christian P Hamel
- INSERM U1051, Institute for Neurosciences of Montpellier, Montpellier, France.,Université Montpellier 1, Montpellier, France.,Université Montpellier 2, Montpellier, France.,CHRU Montpellier, Centre de Référence Maladies Sensorielles Génétiques, Montpellier, France
| |
Collapse
|
20
|
Gaillard T, Rineau E, Gueguen N, Prunier F, Henrion D, Lasocki S. IRON DEFICIENCY, INDEPENDENTLY OF ANAEMIA, IS ASSOCIATED WITH DECREASED CARDIAC SYSTOLIC FUNCTION AND ALTERATION OF MYOCARDIAL MITOCHONDRIAL METABOLISM IN A MOUSE MODEL. Intensive Care Med Exp 2015. [PMCID: PMC4797399 DOI: 10.1186/2197-425x-3-s1-a979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
21
|
Colin E, Huynh Cong E, Mollet G, Guichet A, Gribouval O, Arrondel C, Boyer O, Daniel L, Gubler MC, Ekinci Z, Tsimaratos M, Chabrol B, Boddaert N, Verloes A, Chevrollier A, Gueguen N, Desquiret-Dumas V, Ferré M, Procaccio V, Richard L, Funalot B, Moncla A, Bonneau D, Antignac C. Loss-of-function mutations in WDR73 are responsible for microcephaly and steroid-resistant nephrotic syndrome: Galloway-Mowat syndrome. Am J Hum Genet 2014; 95:637-48. [PMID: 25466283 DOI: 10.1016/j.ajhg.2014.10.011] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 10/24/2014] [Indexed: 01/08/2023] Open
Abstract
Galloway-Mowat syndrome is a rare autosomal-recessive condition characterized by nephrotic syndrome associated with microcephaly and neurological impairment. Through a combination of autozygosity mapping and whole-exome sequencing, we identified WDR73 as a gene in which mutations cause Galloway-Mowat syndrome in two unrelated families. WDR73 encodes a WD40-repeat-containing protein of unknown function. Here, we show that WDR73 was present in the brain and kidney and was located diffusely in the cytoplasm during interphase but relocalized to spindle poles and astral microtubules during mitosis. Fibroblasts from one affected child and WDR73-depleted podocytes displayed abnormal nuclear morphology, low cell viability, and alterations of the microtubule network. These data suggest that WDR73 plays a crucial role in the maintenance of cell architecture and cell survival. Altogether, WDR73 mutations cause Galloway-Mowat syndrome in a particular subset of individuals presenting with late-onset nephrotic syndrome, postnatal microcephaly, severe intellectual disability, and homogenous brain MRI features. WDR73 is another example of a gene involved in a disease affecting both the kidney glomerulus and the CNS.
Collapse
|
22
|
Laafi J, Homedan C, Jacques C, Gueguen N, Schmitt C, Puy H, Reynier P, Carmen Martinez M, Malthièry Y. Pro-oxidant effect of ALA is implicated in mitochondrial dysfunction of HepG2 cells. Biochimie 2014; 106:157-66. [PMID: 25220386 DOI: 10.1016/j.biochi.2014.08.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 08/22/2014] [Indexed: 12/16/2022]
Abstract
Heme biosynthesis begins in the mitochondrion with the formation of delta-aminolevulinic acid (ALA). In acute intermittent porphyria, hereditary tyrosinemia type I and lead poisoning patients, ALA is accumulated in plasma and in organs, especially the liver. These diseases are also associated with neuromuscular dysfunction and increased incidence of hepatocellular carcinoma. Many studies suggest that this damage may originate from ALA-induced oxidative stress following its accumulation. Using the MnSOD as an oxidative stress marker, we showed here that ALA treatment of cultured cells induced ROS production, increasing with ALA concentration. The mitochondrial energetic function of ALA-treated HepG2 cells was further explored. Mitochondrial respiration and ATP content were reduced compared to control cells. For the 300 μM treatment, ALA induced a mitochondrial mass decrease and a mitochondrial network imbalance although neither necrosis nor apoptosis were observed. The up regulation of PGC-1, Tfam and ND5 genes was also found; these genes encode mitochondrial proteins involved in mitochondrial biogenesis activation and OXPHOS function. We propose that ALA may constitute an internal bioenergetic signal, which initiates a coordinated upregulation of respiratory genes, which ultimately drives mitochondrial metabolic adaptation within cells. The addition of an antioxidant, Manganese(III) tetrakis(1-methyl-4-pyridyl)porphyrin (MnTMPyP), resulted in improvement of maximal respiratory chain capacity with 300 μM ALA. Our results suggest that mitochondria, an ALA-production site, are more sensitive to pro-oxidant effect of ALA, and may be directly involved in pathophysiology of patients with inherited or acquired porphyria.
Collapse
Affiliation(s)
- Jihane Laafi
- LUNAM Université, INSERM UMR 1063, IBIS, IRIS, rue des capucins, 49100 Angers, France.
| | - Chadi Homedan
- LUNAM Université, INSERM UMR 1063, IBIS, IRIS, rue des capucins, 49100 Angers, France; Centre Hospitalier Universitaire, Département de Biochimie et Génétique, IBIS, IRIS, rue des capucins, 49100 Angers, France.
| | - Caroline Jacques
- LUNAM Université, INSERM UMR 1063, IBIS, IRIS, rue des capucins, 49100 Angers, France.
| | - Naig Gueguen
- Centre Hospitalier Universitaire, Département de Biochimie et Génétique, IBIS, IRIS, rue des capucins, 49100 Angers, France; CNRS UMR 6214 - INSERM 1083, IBIS, IRIS, rue des capucins, 49100 Angers, France.
| | - Caroline Schmitt
- Assistance Publique Hôpitaux de Paris, Centre Français des Porphyries, Hôpital Louis Mourier, Université Paris Diderot, 178 rue des Renouillers, 92700 Colombes, France; INSERM U773, Centre de Recherche Biomédicale Bichat-Beaujon, Paris, France; Université Paris Diderot, 5 Rue Thomas Mann, 75013 Paris, France.
| | - Hervé Puy
- Assistance Publique Hôpitaux de Paris, Centre Français des Porphyries, Hôpital Louis Mourier, Université Paris Diderot, 178 rue des Renouillers, 92700 Colombes, France; INSERM U773, Centre de Recherche Biomédicale Bichat-Beaujon, Paris, France; Université Paris Diderot, 5 Rue Thomas Mann, 75013 Paris, France.
| | - Pascal Reynier
- Centre Hospitalier Universitaire, Département de Biochimie et Génétique, IBIS, IRIS, rue des capucins, 49100 Angers, France; CNRS UMR 6214 - INSERM 1083, IBIS, IRIS, rue des capucins, 49100 Angers, France.
| | - Maria Carmen Martinez
- LUNAM Université, INSERM UMR 1063, IBIS, IRIS, rue des capucins, 49100 Angers, France.
| | - Yves Malthièry
- LUNAM Université, INSERM UMR 1063, IBIS, IRIS, rue des capucins, 49100 Angers, France; Centre Hospitalier Universitaire, Département de Biochimie et Génétique, IBIS, IRIS, rue des capucins, 49100 Angers, France.
| |
Collapse
|
23
|
Delattre N, Chambon N, Berton E, Gueguen N, Rao G. Effect of time during a running session with minimal footwear. Comput Methods Biomech Biomed Engin 2013; 16 Suppl 1:104-5. [DOI: 10.1080/10255842.2013.815924] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
24
|
Mirebeau-Prunier D, Le Pennec S, Jacques C, Fontaine JF, Gueguen N, Boutet-Bouzamondo N, Donnart A, Malthièry Y, Savagner F. Estrogen-related receptor alpha modulates lactate dehydrogenase activity in thyroid tumors. PLoS One 2013; 8:e58683. [PMID: 23516535 PMCID: PMC3596295 DOI: 10.1371/journal.pone.0058683] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 02/07/2013] [Indexed: 02/07/2023] Open
Abstract
Metabolic modifications of tumor cells are hallmarks of cancer. They exhibit an altered metabolism that allows them to sustain higher proliferation rates in hostile environment outside the cell. In thyroid tumors, the expression of the estrogen-related receptor α (ERRα), a major factor of metabolic adaptation, is closely related to the oxidative metabolism and the proliferative status of the cells. To elucidate the role played by ERRα in the glycolytic adaptation of tumor cells, we focused on the regulation of lactate dehydrogenases A and B (LDHA, LDHB) and the LDHA/LDHB ratio. Our study included tissue samples from 10 classical and 10 oncocytic variants of follicular thyroid tumors and 10 normal thyroid tissues, as well as samples from three human thyroid tumor cell lines: FTC-133, XTC.UC1 and RO82W-1. We identified multiple cis-acting promoter elements for ERRα, in both the LDHA and LDHB genes. The interaction between ERRα and LDH promoters was confirmed by chromatin immunoprecipitation assays and in vitro analysis for LDHB. Using knock-in and knock-out cellular models, we found an inverse correlation between ERRα expression and LDH activity. This suggests that thyroid tumor cells may reprogram their metabolic pathways through the up-regulation of ERRα by a process distinct from that proposed by the recently revisited Warburg hypothesis.
Collapse
|
25
|
Pooya S, Blaise S, Moreno Garcia M, Giudicelli J, Alberto JM, Guéant-Rodriguez RM, Jeannesson E, Gueguen N, Bressenot A, Nicolas B, Malthiery Y, Daval JL, Peyrin-Biroulet L, Bronowicki JP, Guéant JL. Methyl donor deficiency impairs fatty acid oxidation through PGC-1α hypomethylation and decreased ER-α, ERR-α, and HNF-4α in the rat liver. J Hepatol 2012; 57:344-51. [PMID: 22521344 DOI: 10.1016/j.jhep.2012.03.028] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 02/29/2012] [Accepted: 03/26/2012] [Indexed: 01/20/2023]
Abstract
BACKGROUND & AIMS Folate and cobalamin are methyl donors needed for the synthesis of methionine, which is the precursor of S-adenosylmethionine, the substrate of methylation in epigenetic, and epigenomic pathways. Methyl donor deficiency produces liver steatosis and predisposes to metabolic syndrome. Whether impaired fatty acid oxidation contributes to this steatosis remains unknown. METHODS We evaluated the consequences of methyl donor deficient diet in liver of pups from dams subjected to deficiency during gestation and lactation. RESULTS The deprived rats had microvesicular steatosis, with increased triglycerides, decreased methionine synthase activity, S-adenosylmethionine, and S-adenosylmethionine/S-adenosylhomocysteine ratio. We observed no change in apoptosis markers, oxidant and reticulum stresses, and carnityl-palmitoyl transferase 1 activity, and a decreased expression of SREBP-1c. Impaired beta-oxidation of fatty acids and carnitine deficit were the predominant changes, with decreased free and total carnitines, increased C14:1/C16 acylcarnitine ratio, decrease of oxidation rate of palmitoyl-CoA and palmitoyl-L-carnitine and decrease of expression of novel organic cation transporter 1, acylCoA-dehydrogenase and trifunctional enzyme subunit alpha and decreased activity of complexes I and II. These changes were related to lower protein expression of ER-α, ERR-α and HNF-4α, and hypomethylation of PGC-1α co-activator that reduced its binding with PPAR-α, ERR-α, and HNF-4α. CONCLUSIONS The liver steatosis resulted predominantly from hypomethylation of PGC1-α, decreased binding with its partners and subsequent impaired mitochondrial fatty acid oxidation. This link between methyl donor deficiency and epigenomic deregulations of energy metabolism opens new insights into the pathogenesis of fatty liver disease, in particular, in relation to the fetal programming hypothesis.
Collapse
Affiliation(s)
- Shabnam Pooya
- Inserm U954, Medical Faculty and CHU of Nancy, Nancy University, Nancy, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Morfouace M, Lalier L, Bahut M, Bonnamain V, Naveilhan P, Guette C, Oliver L, Gueguen N, Reynier P, Vallette FM. Comparison of spheroids formed by rat glioma stem cells and neural stem cells reveals differences in glucose metabolism and promising therapeutic applications. J Biol Chem 2012; 287:33664-74. [PMID: 22782899 DOI: 10.1074/jbc.m111.320028] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Cancer stem cells (CSCs) are thought to be partially responsible for cancer resistance to current therapies and tumor recurrence. Dichloroacetate (DCA), a compound capable of shifting metabolism from glycolysis to glucose oxidation, via an inhibition of pyruvate dehydrogenase kinase was used. We show that DCA is able to shift the pyruvate metabolism in rat glioma CSCs but has no effect in rat neural stem cells. DCA forces CSCs into oxidative phosphorylation but does not trigger the production of reactive oxygen species and consecutive anti-cancer apoptosis. However, DCA, associated with etoposide or irradiation, induced a Bax-dependent apoptosis in CSCs in vitro and decreased their proliferation in vivo. The former phenomenon is related to DCA-induced Foxo3 and p53 expression, resulting in the overexpression of BH3-only proteins (Bad, Noxa, and Puma), which in turn facilitates Bax-dependent apoptosis. Our results demonstrate that a small drug available for clinical studies potentiates the induction of apoptosis in glioma CSCs.
Collapse
Affiliation(s)
- Marie Morfouace
- UMR INSERM 892-CNRS 6299, Centre de Recherche en Cancérologie Nantes-Angers, Nantes, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Desquiret-Dumas V, Gueguen N, Barth M, Chevrollier A, Hancock S, Wallace DC, Amati-Bonneau P, Henrion D, Bonneau D, Reynier P, Procaccio V. Metabolically induced heteroplasmy shifting and l-arginine treatment reduce the energetic defect in a neuronal-like model of MELAS. Biochim Biophys Acta Mol Basis Dis 2012; 1822:1019-29. [PMID: 22306605 DOI: 10.1016/j.bbadis.2012.01.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 01/18/2012] [Accepted: 01/19/2012] [Indexed: 11/17/2022]
Abstract
The m.3243A>G variant in the mitochondrial tRNA(Leu(UUR)) gene is a common mitochondrial DNA (mtDNA) mutation. Phenotypic manifestations depend mainly on the heteroplasmy, i.e. the ratio of mutant to normal mtDNA copies. A high percentage of mutant mtDNA is associated with a severe, life-threatening neurological syndrome known as MELAS (mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes). MELAS is described as a neurovascular disorder primarily affecting the brain and blood vessels, but the pathophysiology of the disease is poorly understood. We developed a series of cybrid cell lines at two different mutant loads: 70% and 100% in the nuclear background of a neuroblastoma cell line (SH-SY5Y). We investigated the impact of the mutation on the metabolism and mitochondrial respiratory chain activity of the cybrids. The m.3243A>G mitochondrial mutation induced a metabolic switch towards glycolysis in the neuronal cells and produced severe defects in respiratory chain assembly and activity. We used two strategies to compensate for the biochemical defects in the mutant cells: one consisted of lowering the glucose content in the culture medium, and the other involved the addition of l-arginine. The reduction of glucose significantly shifted the 100% mutant cells towards the wild-type, reaching a 90% mutant level and restoring respiratory chain complex assembly. The addition of l-arginine, a nitric oxide (NO) donor, improved complex I activity in the mutant cells in which the defective NO metabolism had led to a relative shortage of NO. Thus, metabolically induced heteroplasmy shifting and l-arginine therapy may constitute promising therapeutic strategies against MELAS.
Collapse
Affiliation(s)
- Valerie Desquiret-Dumas
- Department of Biochemistry and Genetics, Angers University Hospital, School of Medicine, Angers, F-49000, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Garcia MM, Guéant-Rodriguez RM, Pooya S, Brachet P, Alberto JM, Jeannesson E, Maskali F, Gueguen N, Marie PY, Lacolley P, Herrmann M, Juillière Y, Malthiery Y, Guéant JL. Methyl donor deficiency induces cardiomyopathy through altered methylation/acetylation of PGC-1α by PRMT1 and SIRT1. J Pathol 2011; 225:324-35. [PMID: 21633959 DOI: 10.1002/path.2881] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 01/29/2011] [Accepted: 02/20/2011] [Indexed: 12/16/2023]
Abstract
Cardiomyopathies occur by mechanisms that involve inherited and acquired metabolic disorders. Both folate and vitamin B12 deficiencies are associated with left ventricular dysfunction, but mechanisms that underlie these associations are not known. However, folate and vitamin B12 are methyl donors needed for the synthesis of S-adenosylmethionine, the substrate required for the activation by methylation of regulators of energy metabolism. We investigated the consequences of a diet lacking methyl donors in the myocardium of weaning rats from dams subjected to deficiency during gestation and lactation. Positron emission tomography (PET), microscope and metabolic examinations evidenced a myocardium hypertrophy, with cardiomyocyte enlargement, disturbed mitochondrial alignment, lipid droplets, decreased respiratory activity of complexes I and II and decreased S-adenosylmethionine:S-adenosylhomocysteine ratio. The increased concentrations of triglycerides and acylcarnitines were consistent with a deficit in fatty acid oxidation. These changes were explained by imbalanced acetylation/methylation of PGC-1α, through decreased expression of SIRT1 and PRMT1 and decreased S-adenosylmethionine:S-adenosylhomocysteine ratio, and by decreased expression of PPARα and ERRα. The main changes of the myocardium proteomic study were observed for proteins regulated by PGC-1α, PPARs and ERRα. These proteins, namely trifunctional enzyme subunit α-complex, short chain acylCoA dehydrogenase, acylCoA thioesterase 2, fatty acid binding protein-3, NADH dehydrogenase (ubiquinone) flavoprotein 2, NADH dehydrogenase (ubiquinone) 1α-subunit 10 and Hspd1 protein, are involved in fatty acid oxidation and mitochondrial respiration. In conclusion, the methyl donor deficiency produces detrimental effects on fatty acid oxidation and energy metabolism of myocardium through imbalanced methylation/acetylation of PGC-1α and decreased expression of PPARα and ERRα. These data are of pathogenetic relevance to perinatal cardiomyopathies.
Collapse
|
29
|
Cassereau J, Casasnovas C, Gueguen N, Malinge MC, Guillet V, Reynier P, Bonneau D, Amati-Bonneau P, Banchs I, Volpini V, Procaccio V, Chevrollier A. Simultaneous MFN2 and GDAP1 mutations cause major mitochondrial defects in a patient with CMT. Neurology 2011; 76:1524-6. [DOI: 10.1212/wnl.0b013e318217e77d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
30
|
Mirebeau-Prunier D, Le Pennec S, Jacques C, Gueguen N, Poirier J, Malthiery Y, Savagner F. Estrogen-related receptor alpha and PGC-1-related coactivator constitute a novel complex mediating the biogenesis of functional mitochondria. FEBS J 2010; 277:713-25. [PMID: 20067526 DOI: 10.1111/j.1742-4658.2009.07516.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mitochondrial biogenesis, which depends on nuclear as well as mitochondrial genes, occurs in response to increased cellular ATP demand. The nuclear transcriptional factors, estrogen-related receptor alpha (ERRalpha) and nuclear respiratory factors 1 and 2, are associated with the coordination of the transcriptional machinery governing mitochondrial biogenesis, whereas coactivators of the peroxisome proliferator-activated receptor gamma coactivator-1 (PGC-1) family serve as mediators between the environment and this machinery. In the context of proliferating cells, PGC-1-related coactivator (PRC) is a member of the PGC-1 family, which is known to act in partnership with nuclear respiratory factors, but no functional interference between PRC and ERRalpha has been described so far. We explored three thyroid cell lines, FTC-133, XTC.UC1 and RO 82 W-1, each characterized by a different mitochondrial content, and studied their behavior towards PRC and ERRalpha in terms of respiratory efficiency. Overexpression of PRC and ERRalpha led to increased respiratory chain capacity and mitochondrial mass. The inhibition of ERRalpha decreased cell growth and respiratory chain capacity in all three cell lines. However, the inhibition of PRC and ERRalpha produced a greater effect in the oxidative cell model, decreasing the mitochondrial mass and the phosphorylating respiration, whereas the nonphosphorylating respiration remained unchanged. We therefore hypothesize that the ERRalpha-PRC complex plays a role in arresting the cell cycle through the regulation of oxidative phosphorylation in oxidative cells, and through some other pathway in glycolytic cells.
Collapse
|
31
|
Casasnovas C, Banchs I, Cassereau J, Gueguen N, Chevrollier A, Martínez-Matos JA, Bonneau D, Volpini V. Phenotypic spectrum of MFN2 mutations in the Spanish population. J Med Genet 2009; 47:249-56. [PMID: 19889647 DOI: 10.1136/jmg.2009.072488] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The most common form of axonal Charcot-Marie-Tooth (CMT) disease is type 2A, caused by mutations in the mitochondrial GTPase mitofusin 2 (MFN2). OBJECTIVE The objective of our study is to establish the incidence of MFN2 mutations in a cohort of Spanish patients with axonal CMT neuropathy. MATERIAL AND METHODS Eighty-five families with suspected axonal CMT were studied. All MFN2 exons were studied through direct sequencing. A bioenergetics study in fibroblasts was conducted using a skin biopsy taken from a patient with an Arg468His mutation. RESULTS Twenty-four patients from 14 different families were identified with nine different MFN2 mutations (Arg94Trp, Arg94Gln, Ile203Met, Asn252Lys, Gln276His, Gly296Arg, Met376Val, Arg364Gln and Arg468His). All mutations were found in the heterozygous state and four of these mutations had not been described previously. MFN2 mutations were responsible for CMT2 in 16% +/- 7% of the families studied and in 30.8 +/- 14.2% (12/39) of families with known dominant inheritance. The bioenergetic studies in fibroblasts show typical results of MFN2 patients with a mitochondrial coupling defect (ATP/O) and an increase of the respiration rate linked to complex II. CONCLUSION It is concluded that mutations in MFN2 are the most frequent cause of CMT2 in this region. The Arg468His mutation was the most prevalent (6/14 families), and our study confirms that it is pathological, presenting as a neuropathy in a mild to moderate degree. This study also demonstrates the value of MFN2 studies in cases of congenital axonal neuropathy, especially in cases of dominant inheritance, severe clinical symptoms or additional symptoms such as optic atrophy.
Collapse
Affiliation(s)
- C Casasnovas
- Neurology Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain.
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Nochez Y, Arsene S, Gueguen N, Chevrollier A, Ferré M, Guillet V, Desquiret V, Toutain A, Bonneau D, Procaccio V, Amati-Bonneau P, Pisella PJ, Reynier P. Acute and late-onset optic atrophy due to a novel OPA1 mutation leading to a mitochondrial coupling defect. Mol Vis 2009; 15:598-608. [PMID: 19325939 PMCID: PMC2661005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2008] [Accepted: 03/20/2009] [Indexed: 11/10/2022] Open
Abstract
PURPOSE Autosomal dominant optic atrophy (ADOA, OMIM 165500), an inherited optic neuropathy that leads to retinal ganglion cell degeneration and reduced visual acuity during the early decades of life, is mainly associated with mutations in the OPA1 gene. Here we report a novel ADOA phenotype associated with a new pathogenic OPA1 gene mutation. METHODS The patient, a 62-year-old woman, was referred for acute, painless, and severe visual loss in her right eye. Acute visual loss in her left eye occurred a year after initial presentation. MRI confirmed the diagnosis of isolated atrophic bilateral optic neuropathy. We performed DNA sequencing of the entire coding sequence and the exon/intron junctions of the OPA1 gene, and we searched for the mitochondrial DNA mutations responsible for Leber hereditary optic atrophy by sequencing entirely mitochondrial DNA. Mitochondrial respiratory chain complex activity and mitochondrial morphology were investigated in skin fibroblasts from the patient and controls. RESULTS We identified a novel heterozygous missense mutation (c.2794C>T) in exon 27 of the OPA1 gene, resulting in an amino acid change (p.R932C) in the protein. This mutation, which affects a highly conserved amino acids, has not been previously reported, and was absent in 400 control chromosomes. Mitochondrial DNA sequence analysis did not reveal any mutation associated with Leber hereditary optic neuropathy or any pathogenic mutations. The investigation of skin fibroblasts from the patient revealed a coupling defect of oxidative phosphorylation and a larger proportion of short mitochondria than in controls. CONCLUSIONS The presence of an OPA1 mutation indicates that this sporadic, late-onset acute case of optic neuropathy is related to ADOA and to a mitochondrial energetic defect. This suggests that the mutational screening of the OPA1 gene would be justified in atypical cases of optic nerve atrophy with no evident cause.
Collapse
Affiliation(s)
- Yannick Nochez
- Centre Hospitalier Universitaire de Tours, Service d'Ophtalmologie, Tours, France
| | - Sophie Arsene
- Centre Hospitalier Universitaire de Tours, Service d'Ophtalmologie, Tours, France
| | - Naig Gueguen
- CHU d’Angers, Département de Biochimie et Génétique, Angers, France,INSERM, U694, Angers, France
| | - Arnaud Chevrollier
- CHU d’Angers, Département de Biochimie et Génétique, Angers, France,INSERM, U694, Angers, France
| | - Marc Ferré
- CHU d’Angers, Département de Biochimie et Génétique, Angers, France,INSERM, U694, Angers, France,Université d’Angers, Faculté de Médecine, Angers, France
| | - Virginie Guillet
- INSERM, U694, Angers, France,Université d’Angers, Faculté de Médecine, Angers, France
| | | | - Annick Toutain
- Centre Hospitalier Universitaire de Tours, Service de Génétique, Tours, France
| | - Dominique Bonneau
- CHU d’Angers, Département de Biochimie et Génétique, Angers, France,INSERM, U694, Angers, France,Université d’Angers, Faculté de Médecine, Angers, France
| | - Vincent Procaccio
- CHU d’Angers, Département de Biochimie et Génétique, Angers, France,Université d’Angers, Faculté de Médecine, Angers, France,CNRS, UMR6214, Angers, France,INSERM, U771, Angers, France
| | - Patrizia Amati-Bonneau
- CHU d’Angers, Département de Biochimie et Génétique, Angers, France,INSERM, U694, Angers, France
| | - Pierre-Jean Pisella
- Centre Hospitalier Universitaire de Tours, Service d'Ophtalmologie, Tours, France
| | - Pascal Reynier
- CHU d’Angers, Département de Biochimie et Génétique, Angers, France,INSERM, U694, Angers, France,Université d’Angers, Faculté de Médecine, Angers, France
| |
Collapse
|
33
|
Verny C, Loiseau D, Scherer C, Lejeune P, Chevrollier A, Gueguen N, Guillet V, Dubas F, Reynier P, Amati-Bonneau P, Bonneau D. Multiple sclerosis-like disorder in OPA1-related autosomal dominant optic atrophy. Neurology 2008; 70:1152-3. [PMID: 18287570 DOI: 10.1212/01.wnl.0000289194.89359.a1] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- C Verny
- Département de Neurologie, Centre Hospitalier Universitaire, INSERM U694, Angers, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Abstract
BACKGROUND AND AIM The aim of this study was to investigate the theoretical dimensionality of burnout measurement (MBI). The objective of the study was to check the working hypothesis according to which the subscales of the Maslach Burnout Inventory (MBI) such as "emotional exhaustion" and "cynicism" (depersonalization) were not correlated with that of "personal achievement" (professional efficacy). To do so, we performed a meta-analysis [Maslach and Jackson, The Maslach Burnout Inventory, 1981, 1986]. METHODS The sample included 12,112 participants (sample size range from 100-3312 participants; estimated mean=448.59; standard deviation=648.51). Doctheses, Francis, Interscience, Kluweronline, Medline, PsycInfo, and ScienceDirect were searched to identify papers. Exploring references identified 83 publications (1998-2001). Two keywords were used: "Maslach Burnout Inventory" and "organizational stress". The criteria for this meta-analysis included: using the MBI "human services survey (HSS)" for professional care givers, "educators' survey (ES)" for professional educators, "general survey (GS)" for other workers). RESULTS About 58% of the population concerned professional caregivers, 13% professional educators, 11% social workers, and 18% correctional officers and other workers. In this meta-analysis, effect sizes should be reported with the number of studies and confidence intervals to test the consistency and reliability of the mean estimated (effect size). In this case, each correlation can be corrected. The meta-analysis can therefore be conducted on this corrected correlation. The aim will be to control any artefact and sampling error. Meta-analysis showed that the value of the corrected correlation is not always negative in the case of a relation between the dimension of "emotional exhaustion" and "personal achievement" (professional efficacy). In the case of the dimension "emotional exhaustion" and "cynicism" (depersonalization), we observed that the value of the corrected correlation studies and confidence intervals showed that this dimension was always correlated positively in the studies included. For the relationship between the value of corrected correlation studies and confidence intervals of the dimension of "cynicism" (depersonalization) and "personal achievement" (professional efficacy), the studies included showed that they were always correlated negatively. These results confirm the hypothesis studied. CONCLUSION The study revealed two points: (1) the homogeneity of the studies included concerning the fact that assessment of emotional exhaustion and cynicism (depersonalization) are always correlated positively; (2) the heterogeneity of the studies included concerning the fact that personal achievement is correlated with the other subscales of burnout (MBI). This study confirms the hypothesis.
Collapse
Affiliation(s)
- M Lourel
- Laboratoire de psychologie des régulations individuelles et sociales: clinique et société (PRIS), université de Rouen, rue Lavoisier, 76821 Mont-Saint-Aignan, France.
| | | |
Collapse
|
35
|
Lourel M, Gueguen N, Mouda F. L'évaluation du burnout de Pines: adaptation et validation en version française de l'instrument Burnout Measure Short version (BMS-10). PRAT PSYCHOL 2007. [DOI: 10.1016/j.prps.2007.06.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
36
|
|
37
|
Abstract
Space perception was investigated in two groups of participants with severe visual deficiencies performing a tactile bisection task: the participants in the first group (Archers) regularly practised a high-precision sport, whereas those in the second group (Non-Archers) had never practised this activity. Experiments were carried out to determine whether practising this sport might affect the pseudoneglect (resulting in a deviation to the left of the perceived midpoint with respect to the actual physical midpoint) occurring in sighted persons (Bowers & Heilman, 1980) as well as in completely blind children (Sampaio, Gouarir, & Mvondo Mvondo, 1995). No particular deviation was observed in the group of Non-Archers, whereas pseudoneglect was present in the Archers' group. A significant hand effect (left/right), and a significant effect of starting point of tactile exploration were observed across groups. This confirms the existence of a relationship between hemisphere-hands and hemisphere-hemispace mechanisms. The results obtained here show that practising archery affects pseudoneglect.
Collapse
Affiliation(s)
- J P Coudereau
- Génomique Fonctionnelle, Comportements et Pathologies, Centre National de la Recherche Scientifique, 31 Chemin Joseph Aiguier, 13402 Marseille Cedex, France.
| | | | | | | |
Collapse
|
38
|
Gueguen N, Lefaucheur L, Fillaut M, Herpin P. Muscle fiber contractile type influences the regulation of mitochondrial function. Mol Cell Biochem 2006; 276:15-20. [PMID: 16132680 DOI: 10.1007/s11010-005-2464-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2004] [Accepted: 02/17/2005] [Indexed: 11/29/2022]
Abstract
Mitochondrial respiratory rates and regulation by phosphate acceptors were studied on permeabilized fiber bundles differing in their myosin heavy chain profiles. The acceptor control ratio, an indicator of oxidation to phosphorylation coupling, and mitochondrial K(m) for ADP were the highest in type I, intermediate in mixed IIa/IIx and the lowest in IIx and predominantly IIb fiber bundles. A functional coupling between mitochondrial creatine kinase and oxidative phosphorylation occurred in type I and IIa/IIx fiber bundles, exclusively. Our study suggests that mitochondrial functioning in fast IIa fibers is closer to that of the slow/I than fast IIx or IIb fibers.
Collapse
Affiliation(s)
- Naig Gueguen
- INRA, Unité Mixte de Recherche Systèmes d'Elevage et Nutrition Animale et Humaine, Domaine de la Prise, Saint-Gilles, France
| | | | | | | |
Collapse
|
39
|
Gueguen N, Lefaucheur L, Fillaut M, Vincent A, Herpin P. Control of skeletal muscle mitochondria respiration by adenine nucleotides: differential effect of ADP and ATP according to muscle contractile type in pigs. Comp Biochem Physiol B Biochem Mol Biol 2005; 140:287-97. [PMID: 15649776 DOI: 10.1016/j.cbpc.2004.10.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2004] [Revised: 10/22/2004] [Accepted: 10/26/2004] [Indexed: 12/01/2022]
Abstract
Skeletal muscle exhibits considerable variation in mitochondrial content among fiber types, but it is less clear whether mitochondria from different fiber types also present specific functional and regulatory properties. The present experiment was undertaken on ten 170-day-old pigs to compare functional properties and control of respiration by adenine nucleotides in mitochondria isolated from predominantly slow-twitch (Rhomboideus (RM)) and fast-twitch (Longissimus (LM)) muscles. Mitochondrial ATP synthesis, respiratory control ratio (RCR) and ADP-stimulated respiration with either complex I or II substrates were significantly higher (25-30%, P<0.05) in RM than in LM mitochondria, whereas no difference was observed for basal respiration. Based on mitochondrial enzyme activities (cytochrome c oxidase [COX], F0F1-ATPase, mitochondrial creatine kinase [mi-CK]), the higher ADP-stimulated respiration rate of RM mitochondria appeared mainly related to a higher maximal oxidative capacity, without any difference in the maximal phosphorylation potential. Mitochondrial K(m) for ADP was similar in RM (4.4+/-0.9 microM) and LM (5.9+/-1.2 microM) muscles (P>0.05) but the inhibitory effect of ATP was more marked in LM (P<0.01). These findings demonstrate that the regulation of mitochondrial respiration by ATP differs according to muscle contractile type and that absolute muscle oxidative capacity not only relies on mitochondrial density but also on mitochondrial functioning per se.
Collapse
Affiliation(s)
- N Gueguen
- INRA, Unité Mixte de Recherche sur le Veau et le Porc, Domaine de la Prise, 35590 Saint-Gilles, France.
| | | | | | | | | |
Collapse
|
40
|
Gueguen N, Lefaucheur L, Ecolan P, Fillaut M, Herpin P. Ca2+-activated myosin-ATPases, creatine and adenylate kinases regulate mitochondrial function according to myofibre type in rabbit. J Physiol 2005; 564:723-35. [PMID: 15731190 PMCID: PMC1464461 DOI: 10.1113/jphysiol.2005.083030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/11/2005] [Accepted: 02/18/2005] [Indexed: 12/24/2022] Open
Abstract
Mitochondrial respiration rates and their regulation by ADP, AMP and creatine, were studied at different free Ca(2+) concentrations (0.1 versus 0.4 microm) on permeabilized fibre bundles of rabbit skeletal muscles differing in their myosin heavy chain profiles. Four fibre bundle types were obtained: pure types I and IIx, and mixed types IIax (approximately 50% IIa and 50% IIx fibres) and IIb+ (60% IIb fibres, plus IIx and IIa). At rest, pure type I fibres displayed a much higher apparent K(m) for ADP (212 microm) than IIx fibres (8 microm). Within the IIax and IIb+ mixed fibre bundle types, two K(ADP)(m) values were observed (70 microm and 5 microm). Comparison between pure IIx and mixed types indicates that the intermediate K(m) of 70 microm most probably corresponds to the mitochondrial affinity for ADP in IIa fibres, the lowest K(m) for ADP (5 microm) corresponding to IIx and IIb types. Activation of mitochondrial creatine and adenylate kinase reactions stimulated mitochondrial respiration only in type I and IIax fibre bundles, indicating an efficient coupling between both kinases and ADP rephosphorylation in type I and, likely, IIa fibres, since no effect was observed in pure IIx fibres. Following Ca(2+)-induced activation of myosin-ATPase, an increase in mitochondrial sensitivity to ADP of 45% and 250% was observed in type IIax and I bundles, respectively, an effect mostly prevented by addition of vanadate, an inhibitor of myosin-ATPase. Ca(2+)-induced activation of myosin-ATPase also prevented the stimulation of respiration rates by creatine and AMP in I and IIax bundles. In addition to differential regulation of mitochondrial respiration and energy transfer systems at rest in I and IIa versus IIx and IIb muscle fibres, our results indicate a regulation of phosphotransfer systems by Ca(2+) via the stimulation of myosin-ATPases in type I and IIa fibres of rabbit muscles.
Collapse
Affiliation(s)
- N Gueguen
- INRA, Unité Mixte de Recherche Système d'Elevage Nutrition Animale et Humaine, Domaine de la Prise, 35590 Saint-Gilles, France
| | | | | | | | | |
Collapse
|
41
|
Mouchnino L, Gueguen N, Blanchard C, Boulay C, Gimet G, Viton JM, Franceschi JP, Delarque A. Sensori-motor adaptation to knee osteoarthritis during stepping-down before and after total knee replacement. BMC Musculoskelet Disord 2005; 6:21. [PMID: 15854221 PMCID: PMC1131905 DOI: 10.1186/1471-2474-6-21] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2004] [Accepted: 04/26/2005] [Indexed: 11/23/2022] Open
Abstract
Background Stepping-down is preceded by a shift of the center of mass towards the supporting side and forward. The ability to control both balance and lower limb movement was investigated in knee osteoarthritis patients before and after surgery. It was hypothesized that pain rather than knee joint mobility affects the coordination between balance and movement control. Methods The experiment was performed with 25 adult individuals. Eleven were osteoarthritic patients with damage restricted to one lower limb (8 right leg and 3 left leg). Subjects were recruited within two weeks before total knee replacement by the same orthopedic surgeon using the same prosthesis and technics of surgery. Osteoarthritic patients were tested before total knee replacement (pre-surgery session) and then, 9 of the 11 patients were tested one year after the surgery when re-educative training was completed (post-surgery session). 14 adult individuals (men: n = 7 and women: n = 7) were tested as the control group. Results The way in which the center of mass shift forward and toward the supporting side is initiated (timing and amplitude) did not vary within patients before and after surgery. In addition knee joint range of motion of the leading leg remained close to normal before and after surgery. However, the relative timing between both postural and movement phases was modified for the osteoarthritis supporting leg (unusual strategy for stepping-down) before surgery. The "coordinated" control of balance and movement turned to be a "sequential" mode of control; once the body weight transfer has been completed, the movement onset is triggered. This strategy could be aimed at shortening the duration-time supporting on the painful limb. However no such compensatory response was observed. Conclusion The change in the strategy used when supporting on the arthritis and painful limb could result from the action of nociceptors that lead to increased proprioceptor thresholds, thus gating the proprioceptive inputs that may be the critical afferents in controlling the timing of the coordination between balance and movement initiation control.
Collapse
Affiliation(s)
- L Mouchnino
- Laboratory of Movement and Perception, Faculty of Sport Sciences, 163 av. de Luminy 13288 Marseille cedex 9, France
| | - N Gueguen
- Laboratory of Movement and Perception, Faculty of Sport Sciences, 163 av. de Luminy 13288 Marseille cedex 9, France
| | - C Blanchard
- Department of Physical Medicine and Rehabilitation, Université de la Méditerranée, 92 rue A. Blanqui 13005 Marseille, France
| | - C Boulay
- Department of Physical Medicine and Rehabilitation, Université de la Méditerranée, 92 rue A. Blanqui 13005 Marseille, France
| | - G Gimet
- Department of Physical Medicine and Rehabilitation, Université de la Méditerranée, 92 rue A. Blanqui 13005 Marseille, France
| | - J-M Viton
- Department of Physical Medicine and Rehabilitation, Université de la Méditerranée, 92 rue A. Blanqui 13005 Marseille, France
| | - J-P Franceschi
- Department of Orthopedic Surgery, CHU Conception, bd. Baille, 13005 Marseille, France
| | - A Delarque
- Department of Physical Medicine and Rehabilitation, Université de la Méditerranée, 92 rue A. Blanqui 13005 Marseille, France
| |
Collapse
|
42
|
Abstract
The main purpose of this study was to identify whether a lot of sports training had any effect on the balance control associated with a leg movement. The nature of the training experience was also an important concern and we chose subject who had undergone specific training experience in absence of equilibrium constraints. To this end a comparison between control (untrained) subjects, triathletes and swimmers was designed to establish whether a general training in sports (triathletes) or a specific loadless training (swimmers), leads to differences in the balance control. A leg movement is preceded by a shift of the center of mass (CM) towards the supporting side to maintain equilibrium and forward to create the condition for progression. To provide an acceleration of the CM sideward and forward, an initial displacement of the center of pressure (CP) towards the moving limb and in posterior direction was performed. Interestingly, the lateral pressure onto the ground was greater increased in swimmers in both leg raising and obstacle avoidance tasks compared to the control group and/or triathletes whereas the backward CP shift in all group was the same. The initial control of the CM shift is very different in swimmers compared to triathletes and controls. The increased lateral pressure onto the ground in swimmers may be a result of a prolonged training in water. This suggests that prolonged training in the absence of equilibrium constraints has more of an effect on balance control than a prolonged general training. In addition, the lack of differences in the backward CP shift suggests that M/L and A/P controls support two functional goals: equilibrium maintenance and movement initiation.
Collapse
Affiliation(s)
- G Robert
- Laboratoire Mouvement et Perception, Faculté des Sciences du Sport, Université de la Méditerranée & CNRS, 163 av. de Luminy, F-13288 Marseille Cédex 9, France
| | | | | | | |
Collapse
|
43
|
Gueguen N, Coyle T, Craig C, Bootsma R, Mouchnino L. Is perception of upper body orientation based on the inertia tensor? Normogravity versus microgravity conditions. Exp Brain Res 2004; 156:471-7. [PMID: 14968277 DOI: 10.1007/s00221-003-1808-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2002] [Accepted: 12/03/2003] [Indexed: 11/30/2022]
Abstract
During lateral leg raising, a synergistic inclination of the supporting leg and trunk in the opposite direction to the leg movement is performed in order to preserve equilibrium. As first hypothesized by Pagano and Turvey (J Exp Psychol Hum Percept Perform, 1995, 21:1070-1087), the perception of limb orientation could be based on the orientation of the limb's inertia tensor. The purpose of this study was thus to explore whether the final upper body orientation (trunk inclination relative to vertical) depends on changes in the trunk inertia tensor. We imposed a loading condition, with total mass of 4 kg added to the subject's trunk in either a symmetrical or asymmetrical configuration. This changed the orientation of the trunk inertia tensor while keeping the total trunk mass constant. In order to separate any effects of the inertia tensor from the effects of gravitational torque, the experiment was carried out in normo- and microgravity. The results indicated that in normogravity the same final upper body orientation was maintained irrespective of the loading condition. In microgravity, regardless of loading conditions the same (but different from the normogravity) orientation of the upper body was achieved through different joint organizations: two joints (the hip and ankle joints of the supporting leg) in the asymmetrical loading condition, and one (hip) in the symmetrical loading condition. In order to determine whether the different orientations of the inertia tensor were perceived during the movement, the interjoint coordination was quantified by performing a principal components analysis (PCA) on the supporting and moving hips and on the supporting ankle joints. It was expected that different loading conditions would modify the principal component of the PCA. In normogravity, asymmetrical loading decreased the coupling between joints, while in microgravity a strong coupling was preserved whatever the loading condition. It was concluded that the trunk inertia tensor did not play a role during the lateral leg raising task because in spite of the absence of gravitational torque the final upper body orientation and the interjoint coupling were not influenced.
Collapse
Affiliation(s)
- N Gueguen
- Laboratoire Mouvement et Perception, Faculté des Sciences du Sport, CNRS-Université de la Méditerranée, 163 avenue de Luminy, 13288 Marseille cedex 9, France.
| | | | | | | | | |
Collapse
|