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Puybasset L, Perlbarg V, Unrug J, Cassereau D, Galanaud D, Torkomian G, Battisti V, Lefort M, Velly L, Degos V, Citerio G, Bayen É, Pelegrini-Issac M. Prognostic value of global deep white matter DTI metrics for 1-year outcome prediction in ICU traumatic brain injury patients: an MRI-COMA and CENTER-TBI combined study. Intensive Care Med 2022; 48:201-212. [PMID: 34904191 DOI: 10.1007/s00134-021-06583-z] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 11/11/2021] [Indexed: 12/17/2022]
Abstract
PURPOSE A reliable tool for outcome prognostication in severe traumatic brain injury (TBI) would improve intensive care unit (ICU) decision-making process by providing objective information to caregivers and family. This study aimed at designing a new classification score based on magnetic resonance (MR) diffusion metrics measured in the deep white matter between day 7 and day 35 after TBI to predict 1-year clinical outcome. METHODS Two multicenter cohorts (29 centers) were used. MRI-COMA cohort (NCT00577954) was split into MRI-COMA-Train (50 patients enrolled between 2006 and mid-2014) and MRI-COMA-Test (140 patients followed up in clinical routine from 2014) sub-cohorts. These latter patients were pooled with 56 ICU patients (enrolled from 2014 to 2020) from CENTER-TBI cohort (NCT02210221). Patients were dichotomised depending on their 1-year Glasgow outcome scale extended (GOSE) score: GOSE 1-3, unfavorable outcome (UFO); GOSE 4-8, favorable outcome (FO). A support vector classifier incorporating fractional anisotropy and mean diffusivity measured in deep white matter, and age at the time of injury was developed to predict whether the patients would be either UFO or FO. RESULTS The model achieved an area under the ROC curve of 0.93 on MRI-COMA-Train training dataset, and 49% sensitivity for 96.8% specificity in predicting UFO and 58.5% sensitivity for 97.1% specificity in predicting FO on the pooled MRI-COMA-Test and CENTER-TBI validation datasets. CONCLUSION The model successfully identified, with a specificity compatible with a personalized decision-making process in ICU, one in two patients who had an unfavorable outcome at 1 year after the injury, and two-thirds of the patients who experienced a favorable outcome.
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Affiliation(s)
- Louis Puybasset
- Neurosurgical Intensive Care Unit, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France.
- Laboratoire d'Imagerie Biomédicale (LIB), Sorbonne Université, CNRS, INSERM, Paris, France.
- Department of Anesthesiology and Intensive Care, Groupe Hospitalier Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, 47-83 Boulevard de l'Hôpital, 75013, Paris, France.
- Clinical Research Group 29, Sorbonne Université, Paris, France.
| | | | - Jean Unrug
- Neurosurgical Intensive Care Unit, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
- Laboratoire d'Imagerie Biomédicale (LIB), Sorbonne Université, CNRS, INSERM, Paris, France
| | - Didier Cassereau
- Laboratoire d'Imagerie Biomédicale (LIB), Sorbonne Université, CNRS, INSERM, Paris, France
| | - Damien Galanaud
- Laboratoire d'Imagerie Biomédicale (LIB), Sorbonne Université, CNRS, INSERM, Paris, France
- Department of Neuroradiology, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
| | - Grégory Torkomian
- Neurosurgical Intensive Care Unit, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
| | - Valentine Battisti
- Neurosurgical Intensive Care Unit, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
| | - Muriel Lefort
- Laboratoire d'Imagerie Biomédicale (LIB), Sorbonne Université, CNRS, INSERM, Paris, France
| | - Lionel Velly
- Department of Anesthesiology and Critical Care Medicine, University Hospital Timone, AP-HM, Aix Marseille University, Marseille, France
- CNRS, Institute of Neuroscience Timone, UMR7289, Aix Marseille University, Marseille, France
| | - Vincent Degos
- Clinical Research Group 29, Sorbonne Université, Paris, France
- Department of Anesthesia, Critical Care and Peri-Operative Medicine, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
- INSERM UMR 1141, Paris, France
| | - Guiseppe Citerio
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Neurointensive Care Unit, Department of Emergency and Urgency, ASST-Monza, San Gerardo Hospital, Monza, Italy
| | - Éléonore Bayen
- Laboratoire d'Imagerie Biomédicale (LIB), Sorbonne Université, CNRS, INSERM, Paris, France
- Rehabilitation Unit, APHP, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
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Mund A, Schubert T, Staege H, Kinkley S, Reumann K, Kriegs M, Fritsch L, Battisti V, Ait-Si-Ali S, Hoffbeck AS, Soutoglou E, Will H. SPOC1 modulates DNA repair by regulating key determinants of chromatin compaction and DNA damage response. Nucleic Acids Res 2020; 48:10013-10014. [PMID: 32890405 PMCID: PMC7515721 DOI: 10.1093/nar/gkaa754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Andreas Mund
- Heinrich-Pette-Institute, Leibniz-Institute for Experimental Virology, Department of General Virology, Martinistrasse 52, 20251 Hamburg, Germany
| | - Tobias Schubert
- Heinrich-Pette-Institute, Leibniz-Institute for Experimental Virology, Department of General Virology, Martinistrasse 52, 20251 Hamburg, Germany
| | - Hannah Staege
- Heinrich-Pette-Institute, Leibniz-Institute for Experimental Virology, Department of General Virology, Martinistrasse 52, 20251 Hamburg, Germany
| | - Sarah Kinkley
- Heinrich-Pette-Institute, Leibniz-Institute for Experimental Virology, Department of General Virology, Martinistrasse 52, 20251 Hamburg, Germany
| | - Kerstin Reumann
- Heinrich-Pette-Institute, Leibniz-Institute for Experimental Virology, Department of General Virology, Martinistrasse 52, 20251 Hamburg, Germany
| | - Malte Kriegs
- University Medical Center Hamburg, Clinic and Policlinic of Radiation Biology and Experimental Radiooncology, Laboratory of Radiobiology & Experimental Radiooncology, Martinistrasse 52, 20246 Hamburg, Germany
| | - Lauriane Fritsch
- University Paris Diderot, Sorbonne Paris Cité, Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, 35 rue Hélène Brion, F-75013 Paris
| | - Valentine Battisti
- University Paris Diderot, Sorbonne Paris Cité, Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, 35 rue Hélène Brion, F-75013 Paris
| | - Slimane Ait-Si-Ali
- University Paris Diderot, Sorbonne Paris Cité, Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, 35 rue Hélène Brion, F-75013 Paris
| | - Anne-Sophie Hoffbeck
- Department of Cancer Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS UMR 7104, INSERM U 596, Centre Universitaire de Strasbourg, 67404 Illkirch CEDEX, France
| | - Evi Soutoglou
- Department of Cancer Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS UMR 7104, INSERM U 596, Centre Universitaire de Strasbourg, 67404 Illkirch CEDEX, France
| | - Hans Will
- Heinrich-Pette-Institute, Leibniz-Institute for Experimental Virology, Department of General Virology, Martinistrasse 52, 20251 Hamburg, Germany
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Lesimple B, Caron E, Lefort M, Debarle C, Pélégrini-Issac M, Cassereau D, Delphine S, Torkomian G, Battisti V, Bossale P, Galanaud D, Puybasset L, Pradat-Diehl P, Perlbarg V. Long-term cognitive disability after traumatic brain injury: Contribution of the DEX relative questionnaires. Neuropsychol Rehabil 2019; 30:1905-1924. [PMID: 31116085 DOI: 10.1080/09602011.2019.1618345] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Executive functions are high-level cognitive processes commonly impaired after severe traumatic brain injury (sTBI), which may be associated with persistent anosognosia. The dysexecutive questionnaire (DEX) was designed to assess different domains of executive functioning in daily life. Two versions of the DEX exist (DEX-S completed by the patient, DEX-O completed by a relative) to compare cognitive complaints and patient's awareness. This work was aimed at studying the relevance of DEX-O for assessing daily-life limitations, the persistence of anosognosia and its association with global disability (GOSE) and magnetic resonance imaging (MRI) markers of brain alterations. Sixty-three patients (and relatives) were included within 63.4 months (±20.7) after sTBI. DEX-S and DEX-O scores were significantly positively correlated. We obtained significant correlations between DEX-S and episodic memory and phasic alert but not with executive assessment, GOSE and diffusion MRI markers. DEX-O was significantly correlated with executive function, episodic memory, attention (phasic alert sustained and divided attention), with the GOSE and the volume of the body of the corpus callosum (MRI marker). Anosognosia score (DEX-O minus DEX-S) correlated with mean diffusivity measure. These results highlight the clinical interest of DEX-O in assessing long-term disability.
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Affiliation(s)
- Blandine Lesimple
- AP-HP, Service de Neuroréanimation chirurgicale, Hôpital Pitié-Salpêtrière, Paris, France.,SAMSAH La Note Bleue, Fondation Partage et Vie, Paris, France
| | - Elsa Caron
- AP-HP, Service de Médecine Physique et Réadaptation, Hôpital Pitié-Salpêtrière, Paris, France.,dSAMSAH -SAVS, Association Guyanaise contre les Maladies Neuromusculaires, Cayenne, France
| | - Muriel Lefort
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France
| | - Clara Debarle
- GRC-Sorbonne Université n°18 HanCRe, Sorbonne Université, Paris, France
| | | | - Didier Cassereau
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France.,ESPCI ParisTech, PSL Research University, Paris, France
| | - Sébastien Delphine
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France.,Institut des Neurosciences Translationnelles de Paris, IHU-A-ICM, Institut du Cerveau et de la Moelle épinière, Paris, France
| | - Grégory Torkomian
- AP-HP, Service de Neuroréanimation chirurgicale, Hôpital Pitié-Salpêtrière, Paris, France
| | - Valentine Battisti
- AP-HP, Service de Neuroréanimation chirurgicale, Hôpital Pitié-Salpêtrière, Paris, France
| | - Pierrette Bossale
- AP-HP, Service de Neuroréanimation chirurgicale, Hôpital Pitié-Salpêtrière, Paris, France
| | - Damien Galanaud
- AP-HP, Service de Neuroradiologie, Hôpital Pitié-Salpêtrière, Paris, France
| | - Louis Puybasset
- AP-HP, Service de Neuroréanimation chirurgicale, Hôpital Pitié-Salpêtrière, Paris, France.,Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France
| | - Pascale Pradat-Diehl
- AP-HP, Service de Médecine Physique et Réadaptation, Hôpital Pitié-Salpêtrière, Paris, France.,Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France.,GRC-Sorbonne Université n°18 HanCRe, Sorbonne Université, Paris, France
| | - Vincent Perlbarg
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, Paris, France.,Bioinformatics and Biostatistics Core Facility, iCONICS, ICM, Institut du Cerveau et de la Moelle épinière, Paris, France
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Velly L, Perlbarg V, Boulier T, Adam N, Delphine S, Luyt CE, Battisti V, Torkomian G, Arbelot C, Chabanne R, Jean B, Di Perri C, Laureys S, Citerio G, Vargiolu A, Rohaut B, Bruder N, Girard N, Silva S, Cottenceau V, Tourdias T, Coulon O, Riou B, Naccache L, Gupta R, Benali H, Galanaud D, Puybasset L, Constantin JM, Chastre J, Amour J, Vezinet C, Rouby JJ, Raux M, Langeron O, Degos V, Bolgert F, Weiss N, Similowski T, Demoule A, Duguet A, Tollard E, Veber B, Lotterie JA, SANCHEZ-PENA P, Génestal M, Patassini M. Use of brain diffusion tensor imaging for the prediction of long-term neurological outcomes in patients after cardiac arrest: a multicentre, international, prospective, observational, cohort study. Lancet Neurol 2018; 17:317-326. [DOI: 10.1016/s1474-4422(18)30027-9] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 01/23/2018] [Accepted: 01/24/2018] [Indexed: 01/19/2023]
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Beyer S, Pontis J, Schirwis E, Battisti V, Rudolf A, Le Grand F, Ait-Si-Ali S. Erratum: Canonical Wnt signalling regulates nuclear export of Setdb1 during skeletal muscle terminal differentiation. Cell Discov 2016; 2:16043. [PMID: 27867535 PMCID: PMC5110003 DOI: 10.1038/celldisc.2016.43] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Sophie Beyer
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Julien Pontis
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Elija Schirwis
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Valentine Battisti
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Anja Rudolf
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Fabien Le Grand
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Slimane Ait-Si-Ali
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
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Beyer S, Pontis J, Schirwis E, Battisti V, Rudolf A, Le Grand F, Ait-Si-Ali S. Canonical Wnt signalling regulates nuclear export of Setdb1 during skeletal muscle terminal differentiation. Cell Discov 2016; 2:16037. [PMID: 27790377 PMCID: PMC5067623 DOI: 10.1038/celldisc.2016.37] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 09/19/2016] [Indexed: 02/06/2023] Open
Abstract
The histone 3 lysine 9 methyltransferase Setdb1 is essential for both stem cell pluripotency and terminal differentiation of different cell types. To shed light on the roles of Setdb1 in these mutually exclusive processes, we used mouse skeletal myoblasts as a model of terminal differentiation. Ex vivo studies on isolated single myofibres showed that Setdb1 is required for adult muscle stem cells expansion following activation. In vitro studies in skeletal myoblasts confirmed that Setdb1 suppresses terminal differentiation. Genomic binding analyses showed a release of Setdb1 from selected target genes upon myoblast terminal differentiation, concomitant to a nuclear export of Setdb1 to the cytoplasm. Both genomic release and cytoplasmic Setdb1 relocalisation during differentiation were dependent on canonical Wnt signalling. Transcriptomic assays in myoblasts unravelled a significant overlap between Setdb1 and Wnt3a regulated genetic programmes. Together, our findings revealed Wnt-dependent subcellular relocalisation of Setdb1 as a novel mechanism regulating Setdb1 functions and myogenesis.
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Affiliation(s)
- Sophie Beyer
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Julien Pontis
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Elija Schirwis
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Valentine Battisti
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
| | - Anja Rudolf
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Fabien Le Grand
- Institut Cochin, Université Paris-Descartes, Centre National de la Recherche Scientifique (CNRS) UMR8104, Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM) U1016, Paris, France
| | - Slimane Ait-Si-Ali
- Centre National de la Recherche Scientifique CNRS-Université Paris Diderot, Sorbonne Paris Cité, Epigenetics and Cell Fate UMR7216 , Paris, France
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Joliot V, Ait-Mohamed O, Battisti V, Pontis J, Philipot O, Robin P, Ito H, Ait-Si-Ali S. The SWI/SNF subunit/tumor suppressor BAF47/INI1 is essential in cell cycle arrest upon skeletal muscle terminal differentiation. PLoS One 2014; 9:e108858. [PMID: 25271443 PMCID: PMC4182762 DOI: 10.1371/journal.pone.0108858] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 05/28/2014] [Accepted: 08/26/2014] [Indexed: 12/22/2022] Open
Abstract
Myogenic terminal differentiation is a well-orchestrated process starting with permanent cell cycle exit followed by muscle-specific genetic program activation. Individual SWI/SNF components have been involved in muscle differentiation. Here, we show that the master myogenic differentiation factor MyoD interacts with more than one SWI/SNF subunit, including the catalytic subunit BRG1, BAF53a and the tumor suppressor BAF47/INI1. Downregulation of each of these SWI/SNF subunits inhibits skeletal muscle terminal differentiation but, interestingly, at different differentiation steps and extents. BAF53a downregulation inhibits myotube formation but not the expression of early muscle-specific genes. BRG1 or BAF47 downregulation disrupt both proliferation and differentiation genetic programs expression. Interestingly, BRG1 and BAF47 are part of the SWI/SNF remodeling complex as well as the N-CoR-1 repressor complex in proliferating myoblasts. However, our data show that, upon myogenic differentiation, BAF47 shifts in favor of N-CoR-1 complex. Finally, BRG1 and BAF47 are well-known tumor suppressors but, strikingly, only BAF47 seems essential in the myoblasts irreversible cell cycle exit. Together, our data unravel differential roles for SWI/SNF subunits in muscle differentiation, with BAF47 playing a dual role both in the permanent cell cycle exit and in the regulation of muscle-specific genes.
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Affiliation(s)
- Véronique Joliot
- Université Paris Diderot, Sorbonne Paris Cité, Centre Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, Université Paris Diderot, Paris, France
| | - Ouardia Ait-Mohamed
- Université Paris Diderot, Sorbonne Paris Cité, Centre Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, Université Paris Diderot, Paris, France
| | - Valentine Battisti
- Université Paris Diderot, Sorbonne Paris Cité, Centre Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, Université Paris Diderot, Paris, France
| | - Julien Pontis
- Université Paris Diderot, Sorbonne Paris Cité, Centre Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, Université Paris Diderot, Paris, France
| | - Ophélie Philipot
- Université Paris Diderot, Sorbonne Paris Cité, Centre Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, Université Paris Diderot, Paris, France
| | - Philippe Robin
- Université Paris Diderot, Sorbonne Paris Cité, Centre Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, Université Paris Diderot, Paris, France
| | - Hidenori Ito
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, Aichi, Japan
| | - Slimane Ait-Si-Ali
- Université Paris Diderot, Sorbonne Paris Cité, Centre Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique CNRS, Université Paris Diderot, Paris, France
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Mund A, Schubert T, Staege H, Kinkley S, Reumann K, Kriegs M, Fritsch L, Battisti V, Ait-Si-Ali S, Hoffbeck AS, Soutoglou E, Will H. SPOC1 modulates DNA repair by regulating key determinants of chromatin compaction and DNA damage response. Nucleic Acids Res 2012; 40:11363-79. [PMID: 23034801 PMCID: PMC3526275 DOI: 10.1093/nar/gks868] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Survival time-associated plant homeodomain (PHD) finger protein in Ovarian Cancer 1 (SPOC1, also known as PHF13) is known to modulate chromatin structure and is essential for testicular stem-cell differentiation. Here we show that SPOC1 is recruited to DNA double-strand breaks (DSBs) in an ATM-dependent manner. Moreover, SPOC1 localizes at endogenous repair foci, including OPT domains and accumulates at large DSB repair foci characteristic for delayed repair at heterochromatic sites. SPOC1 depletion enhances the kinetics of ionizing radiation-induced foci (IRIF) formation after γ-irradiation (γ-IR), non-homologous end-joining (NHEJ) repair activity, and cellular radioresistance, but impairs homologous recombination (HR) repair. Conversely, SPOC1 overexpression delays IRIF formation and γH2AX expansion, reduces NHEJ repair activity and enhances cellular radiosensitivity. SPOC1 mediates dose-dependent changes in chromatin association of DNA compaction factors KAP-1, HP1-α and H3K9 methyltransferases (KMT) GLP, G9A and SETDB1. In addition, SPOC1 interacts with KAP-1 and H3K9 KMTs, inhibits KAP-1 phosphorylation and enhances H3K9 trimethylation. These findings provide the first evidence for a function of SPOC1 in DNA damage response (DDR) and repair. SPOC1 acts as a modulator of repair kinetics and choice of pathways. This involves its dose-dependent effects on DNA damage sensors, repair mediators and key regulators of chromatin structure.
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Affiliation(s)
- Andreas Mund
- Heinrich-Pette-Institute, Leibniz-Institute for Experimental Virology, Department of General Virology, Martinistrasse 52, 20251 Hamburg, Germany
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Ait-Mohamed O, Battisti V, Joliot V, Fritsch L, Pontis J, Medjkane S, Redeuilh C, Lamouri A, Fahy C, Rholam M, Atmani D, Ait-Si-Ali S. Acetonic extract of Buxus sempervirens induces cell cycle arrest, apoptosis and autophagy in breast cancer cells. PLoS One 2011; 6:e24537. [PMID: 21935420 PMCID: PMC3174189 DOI: 10.1371/journal.pone.0024537] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 08/12/2011] [Indexed: 12/19/2022] Open
Abstract
Plants are an invaluable source of potential new anti-cancer drugs. Here, we investigated the cytotoxic activity of the acetonic extract of Buxus sempervirens on five breast cancer cell lines, MCF7, MCF10CA1a and T47D, three aggressive triple positive breast cancer cell lines, and BT-20 and MDA-MB-435, which are triple negative breast cancer cell lines. As a control, MCF10A, a spontaneously immortalized but non-tumoral cell line has been used. The acetonic extract of Buxus sempervirens showed cytotoxic activity towards all the five studied breast cancer cell lines with an IC(50) ranging from 7.74 µg/ml to 12.5 µg/ml. Most importantly, the plant extract was less toxic towards MCF10A with an IC(50) of 19.24 µg/ml. Fluorescence-activated cell sorting (FACS) analysis showed that the plant extract induced cell death and cell cycle arrest in G0/G1 phase in MCF7, T47D, MCF10CA1a and BT-20 cell lines, concomitant to cyclin D1 downregulation. Application of MCF7 and MCF10CA1a respective IC(50) did not show such effects on the control cell line MCF10A. Propidium iodide/Annexin V double staining revealed a pre-apoptotic cell population with extract-treated MCF10CA1a, T47D and BT-20 cells. Transmission electron microscopy analyses indicated the occurrence of autophagy in MCF7 and MCF10CA1a cell lines. Immunofluorescence and Western blot assays confirmed the processing of microtubule-associated protein LC3 in the treated cancer cells. Moreover, we have demonstrated the upregulation of Beclin-1 in these cell lines and downregulation of Survivin and p21. Also, Caspase-3 detection in treated BT-20 and T47D confirmed the occurrence of apoptosis in these cells. Our findings indicate that Buxus sempervirens extract exhibit promising anti-cancer activity by triggering both autophagic cell death and apoptosis, suggesting that this plant may contain potential anti-cancer agents for single or combinatory cancer therapy against breast cancer.
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Affiliation(s)
- Ouardia Ait-Mohamed
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la vie, Université de Béjaia, Béjaia, Algeria
| | - Valentine Battisti
- Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Véronique Joliot
- Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Lauriane Fritsch
- Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Julien Pontis
- Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Souhila Medjkane
- Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Catherine Redeuilh
- Laboratoire ITODYS, UMR7086 CNRS, Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Aazdine Lamouri
- Laboratoire ITODYS, UMR7086 CNRS, Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Christine Fahy
- Laboratoire ITODYS, UMR7086 CNRS, Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Mohamed Rholam
- Laboratoire ITODYS, UMR7086 CNRS, Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | - Djebbar Atmani
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la vie, Université de Béjaia, Béjaia, Algeria
| | - Slimane Ait-Si-Ali
- Laboratoire Epigénétique et Destin Cellulaire, UMR7216, Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot Sorbonne Paris Cité, Paris, France
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Lye C, Welchman D, Mazariegos JG, Booth H, Le Droguen PM, Battisti V, Lenoir O, Coiffic A, Sanson B. 03-P070 A YFP-exon trap screen to identify patterns of gene expression and protein localisation in Drosophila embryos. Mech Dev 2009. [DOI: 10.1016/j.mod.2009.06.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Leães FL, Daniel AP, Mello GB, Battisti V, Bogusz S, Emanuelli T, Fries LLM, Costabeber I. Degradation of polychlorinated biphenyls (PCBs) by Staphylococcus xylosus in liquid media and meat mixture. Food Chem Toxicol 2006; 44:847-54. [PMID: 16387403 DOI: 10.1016/j.fct.2005.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 06/24/2005] [Revised: 11/08/2005] [Accepted: 11/15/2005] [Indexed: 10/25/2022]
Abstract
We investigated the growth of the meat starter Staphylococcus xylosus (10(4) cells mL(-1)) in liquid media containing 0.01 ppm of each polychlorinated biphenyls (PCBs 10, 28, 52, 138, 153, and 180) and its ability to degrade PCBs during 168 h of incubation in liquid media (10(4) cells mL(-1), 0.01 ppm of each PCB congener) and cured meat mixture (0.1% of meat starter, 1 microg g(-1) fat of each PCB congener). PCBs did not affect the growth of the starter microorganism in nutritive (brain heart infusion, BHI) or mineral salts medium (MSM) when compared to control (no PCB). S. xylosus degraded some of the PCB congeners tested. PCBs 138 and 153 were degraded both in BHI (78% and 68%, respectively; p<0.05) and in MSM (71% and 66%, respectively; p<0.05), with maximum degradation being observed within 24 h. Highly significant negative exponential relationships was observed between incubation time and concentrations of PCB 28 and 180 in BHI, as well as for PCBs 52 and 180 in MSM. In the cured meat mixture highly significant negative exponential relationship was observed between incubation time and the concentration of PCB 10. These results indicate that although S. xylosus reduced residues of various PCB congeners in liquid media, it was less effective in cured meat.
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Affiliation(s)
- F L Leães
- Programa de Pós-graduação em Ciência e Tecnologia de Alimentos, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Camobi, Santa Maria, RS, CEP 97105-900, Brazil
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