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Noujarède J, Carrié L, Garcia V, Grimont M, Eberhardt A, Mucher E, Genais M, Schreuder A, Carpentier S, Ségui B, Nieto L, Levade T, Puig S, Torres T, Malvehy J, Harou O, Lopez J, Dalle S, Caramel J, Gibot L, Riond J, Andrieu-Abadie N. Sphingolipid paracrine signaling impairs keratinocyte adhesion to promote melanoma invasion. Cell Rep 2023; 42:113586. [PMID: 38113139 DOI: 10.1016/j.celrep.2023.113586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 10/20/2023] [Accepted: 11/30/2023] [Indexed: 12/21/2023] Open
Abstract
Melanoma is the deadliest form of skin cancer due to its propensity to metastasize. It arises from melanocytes, which are attached to keratinocytes within the basal epidermis. Here, we hypothesize that, in addition to melanocyte-intrinsic modifications, dysregulation of keratinocyte functions could initiate early-stage melanoma cell invasion. We identified the lysolipid sphingosine 1-phosphate (S1P) as a tumor paracrine signal from melanoma cells that modifies the keratinocyte transcriptome and reduces their adhesive properties, leading to tumor invasion. Mechanistically, tumor cell-derived S1P reduced E-cadherin expression in keratinocytes via S1P receptor dependent Snail and Slug activation. All of these effects were blocked by S1P2/3 antagonists. Importantly, we showed that epidermal E-cadherin expression was inversely correlated with the expression of the S1P-producing enzyme in neighboring tumors and the Breslow thickness in patients with early-stage melanoma. These findings support the notion that E-cadherin loss in the epidermis initiates the metastatic cascade in melanoma.
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Affiliation(s)
- Justine Noujarède
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Lorry Carrié
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Virginie Garcia
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Maxime Grimont
- Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre de Recherches en Cancérologie de Lyon, Lyon, France
| | - Anaïs Eberhardt
- Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre de Recherches en Cancérologie de Lyon, Lyon, France; Service de Dermatologie, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Elodie Mucher
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Matthieu Genais
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Anne Schreuder
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Stéphane Carpentier
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Bruno Ségui
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Laurence Nieto
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Thierry Levade
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France; Laboratoire de Biochimie Métabolique, CHU de Toulouse, Toulouse, France
| | - Susana Puig
- Melanoma Unit, Department of Dermatology, University of Barcelona, Barcelona, Spain & CIBER of Rare Diseases, Instituto de Salud Carlos III, Barcelona, Spain
| | - Teresa Torres
- Melanoma Unit, Department of Dermatology, University of Barcelona, Barcelona, Spain & CIBER of Rare Diseases, Instituto de Salud Carlos III, Barcelona, Spain
| | - Josep Malvehy
- Melanoma Unit, Department of Dermatology, University of Barcelona, Barcelona, Spain & CIBER of Rare Diseases, Instituto de Salud Carlos III, Barcelona, Spain
| | - Olivier Harou
- Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre de Recherches en Cancérologie de Lyon, Lyon, France; Service de Dermatologie, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Jonathan Lopez
- Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre de Recherches en Cancérologie de Lyon, Lyon, France; Service de Dermatologie, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Stéphane Dalle
- Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre de Recherches en Cancérologie de Lyon, Lyon, France; Service de Dermatologie, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Pierre Bénite, France
| | - Julie Caramel
- Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, Centre de Recherches en Cancérologie de Lyon, Lyon, France
| | - Laure Gibot
- Université Toulouse III Paul-Sabatier, Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique, CNRS UMR5623, Toulouse, France
| | - Joëlle Riond
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France
| | - Nathalie Andrieu-Abadie
- Université de Toulouse, INSERM, CNRS, Université Toulouse III-Paul Sabatier, Centre de Recherches en Cancérologie de Toulouse, Toulouse, France.
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2
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Fraichard S, Gonzalez D, Grassein P, Delarue P, Senet P, Nicolaï A, Chavanne E, Mucher E, Artur Y, Ferveur JF, Heydel JM, Briand L, Neiers F. Data on the expression of GSTE1 and GSTE7 in Drosophila chemosensory organs after isothiocyanate exposure. Data Brief 2018; 20:254-257. [PMID: 30148193 PMCID: PMC6105927 DOI: 10.1016/j.dib.2018.07.062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 07/04/2018] [Accepted: 07/25/2018] [Indexed: 11/19/2022] Open
Abstract
The data presented in this article are related to the research article entitled "Characterization of a Drosophila glutathione transferase involved in isothiocyanate detoxification." (Gonzalez et al., 2018) [1]. This article includes the expression level of Drosophila melanogaster GSTE1 and GSTE7 in chemosensory male tissues and the expression level of the mRNAs coding for the same enzymes after a PEITC exposure in food.
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Affiliation(s)
- Stéphane Fraichard
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Daniel Gonzalez
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Paul Grassein
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078 Dijon Cedex, France
| | - Patrice Delarue
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078 Dijon Cedex, France
| | - Patrick Senet
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078 Dijon Cedex, France
| | - Adrien Nicolaï
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078 Dijon Cedex, France
| | - Evelyne Chavanne
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Elodie Mucher
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Yves Artur
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Jean-François Ferveur
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Jean-Marie Heydel
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Loïc Briand
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Fabrice Neiers
- Centre des Sciences du Goût et de l׳Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
- Correspondence to: CSGA, 17 rue Sully, 21065 Dijon, France.
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Gonzalez D, Fraichard S, Grassein P, Delarue P, Senet P, Nicolaï A, Chavanne E, Mucher E, Artur Y, Ferveur JF, Heydel JM, Briand L, Neiers F. Characterization of a Drosophila glutathione transferase involved in isothiocyanate detoxification. Insect Biochem Mol Biol 2018; 95:33-43. [PMID: 29578047 DOI: 10.1016/j.ibmb.2018.03.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 05/20/2023]
Abstract
Glutathione transferases (GSTs) are ubiquitous key enzymes that catalyse the conjugation of glutathione to xenobiotic compounds in the detoxification process. GSTs have been proposed to play a dual role in the signal termination of insect chemodetection by modifying odorant and tasting molecules and by protecting the chemosensory system. Among the 40 GSTs identified in Drosophila melanogaster, the Delta and Epsilon groups are insect-specific. GSTs Delta and Epsilon may have evolved to serve in detoxification, and have been associated with insecticide resistance. Here, we report the heterologous expression and purification of the D. melanogaster GST Delta 2 (GSTD2). We investigated the capacity of GSTD2 to bind tasting molecules. Among them, we found that isothiocyanates (ITC), insecticidal compounds naturally present in cruciferous plant and perceived as bitter, are good substrates for GSTD2. The X-ray structure of GSTD2 was solved, showing the absence of the classical Ser catalytic residue, conserved in the Delta and Epsilon GSTs. Using molecular dynamics, the interaction of ITC with the GSTD2 three-dimensional structure is analysed and discussed. These findings allow us to consider a biological role for GSTD2 in chemoperception, considering GSTD2 expression in the chemosensory organs and the potential consequences of insect exposure to ITC.
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Affiliation(s)
- Daniel Gonzalez
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Stéphane Fraichard
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Paul Grassein
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078, Dijon Cedex, France
| | - Patrice Delarue
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078, Dijon Cedex, France
| | - Patrick Senet
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078, Dijon Cedex, France
| | - Adrien Nicolaï
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Univ. Bourgogne Franche-Comté, 9 Av. A. Savary, BP 47 870, F-21078, Dijon Cedex, France
| | - Evelyne Chavanne
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Elodie Mucher
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Yves Artur
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Jean-François Ferveur
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Jean-Marie Heydel
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Loïc Briand
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France
| | - Fabrice Neiers
- Centre des Sciences du Goût et de l'Alimentation (CSGA), Université de Bourgogne Franche-Comté, INRA, CNRS, France.
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Swiader A, Nahapetyan H, Faccini J, D'Angelo R, Mucher E, Elbaz M, Boya P, Vindis C. Mitophagy acts as a safeguard mechanism against human vascular smooth muscle cell apoptosis induced by atherogenic lipids. Oncotarget 2018; 7:28821-35. [PMID: 27119505 PMCID: PMC5045359 DOI: 10.18632/oncotarget.8936] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 04/12/2016] [Indexed: 12/31/2022] Open
Abstract
Mitophagy is a critical cellular process that selectively targets damaged mitochondria for autophagosomal degradation both under baseline conditions and in response to stress preventing oxidative damage and cell death. Recent studies have linked alterations in mitochondria function and reduced autophagy with the development of age-related pathologies. However, the significance of mitochondrial autophagy in vessel wall in response to atherogenic lipid stressors is not known. In the present study, we investigated the role of mitophagy on human vascular smooth muscle cells (VSMC) apoptosis induced by oxidized low-density lipoproteins (LDL). We reported for the first time that the engulfment of defective mitochondria by autophagosomes occurred in human VSMC in response to oxidized LDL. The molecular mechanism mediating mitophagy in human VSMC involved dynamin-related protein 1 (Drp1)-mediated mitochondrial fission, accumulation of PTEN-induced putative kinase 1 (PINK1) and the recruitment of the E3 ubiquitin ligase Parkin to mitochondria. Likewise, we found increased voltage-dependent anion channel 1 (VDAC1) and mitofusin 2 (Mnf2) mitochondrial proteins ubiquitination and LC3 association to mitochondria. Using flow cytometry in the presence of lysosomal inhibitors, we showed that PINK1 and Parkin silencing impaired mitophagy flux and enhanced oxidized LDL-induced VSMC apoptosis. In addition, overexpression of PINK1 and Parkin were protective by limiting cell death. Moreover, reduced Bax levels found in VSMC-overexpressing Parkin indicated cross talk among mitophagy and mitochondrial apoptotic signalling pathways. Altogether these data demonstrate that mitophagy is a safeguard mechanism against human VSMC apoptosis induced by atherogenic stressors and highlight mitophagy as a potential target to stabilize atherosclerotic plaque.
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Affiliation(s)
- Audrey Swiader
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Hripsime Nahapetyan
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Julien Faccini
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Romina D'Angelo
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Elodie Mucher
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Meyer Elbaz
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
| | - Patricia Boya
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
| | - Cécile Vindis
- Inserm, UMR-1048, Institute of Metabolic and Cardiovascular Diseases, Toulouse, France.,Toulouse University Paul Sabatier, Toulouse, France
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5
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Nahapetyan H, Faccini J, Mucher E, Grazide MH, Elbaz M, Martinet W, Vindis C. Defective autophagy in vascular smooth muscle cells promotes an unstable atherosclerotic plaque phenotype and increased expression of mitophagy markers in Apo E-/- mice. Atherosclerosis 2017. [DOI: 10.1016/j.atherosclerosis.2017.06.043] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Nahapetyan H, Faccini J, Elbaz M, Grazide M, Mucher E, Martinet W, Vindis C. P677Defective autophagy in vascular smooth muscle cells promotes an unstable atherosclerotic plaque phenotype and increased expression of mitophagy markers in Apo E−/− mice. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p677] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Nahapetyan H, Swiader A, Faccini J, D'Angelo R, Mucher E, Elbaz M, Boya P, Vindis C. Mitophagy acts as a safeguard mechanism against human vascular smooth muscle cell apoptosis induced by atherogenic lipids. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.115] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Trayssac M, Galvani S, Augé N, Sabbadini R, Calise D, Mucher E, Sallusto F, Thomsen M, Salvayre R, Nègre-Salvayre A. Role of Sphingosine-1-Phosphate in Transplant Vasculopathy Evoked by Anti-HLA Antibody. Am J Transplant 2015; 15:2050-61. [PMID: 25930666 DOI: 10.1111/ajt.13264] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 10/21/2014] [Revised: 02/04/2015] [Accepted: 02/11/2015] [Indexed: 01/25/2023]
Abstract
Transplant vasculopathy (TV) represents the main cause of late graft failure and limits the long-term success of organ transplantation. Cellular and humoral immune responses contribute to the pathogenesis of the concentric and diffuse intimal hyperplasia of arteries of the grafted organ. We recently reported that the mitogenic signaling, evoked in human vascular smooth muscle cells (hmSMC) by the anti-HLA class I monoclonal antibody W6/32, implicates neutral sphingomyelinase-2, suggesting a role for sphingolipids in intimal hyperplasia of TV. Here, we investigated whether the mitogenic sphingolipid, sphingosine-1-phosphate (S1P), is involved in intimal hyperplasia elicited by W6/32. Studies were done on cultured hmSMC and on an in vivo model of TV, consisting of human mesenteric arteries grafted into SCID/beige mice, injected weekly with W6/32. hmSMC migration and DNA synthesis elicited by W6/32 were inhibited by the sphingosine kinase-1 (SK1) inhibitor dimethylsphingosine, the anti-S1P antibody Sphingomab and the S1PR1/R3 inhibitor VPC23019. W6/32 stimulated SK1 activity, while siRNA silencing SK1, S1PR1 and S1PR3 inhibited hmSMC migration. In vivo, Sphingomab significantly reduced the intimal thickening induced by W6/32. These data emphasize the role of S1P in intimal hyperplasia elicited by the humoral immune response, and open perspectives for preventing TV with S1P inhibitors.
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Affiliation(s)
- M Trayssac
- INSERM UMR-1048, Toulouse, France.,Biochemistry Department, University of Toulouse, Faculty of Medicine, Toulouse, France
| | - S Galvani
- INSERM UMR-1048, Toulouse, France.,Biochemistry Department, University of Toulouse, Faculty of Medicine, Toulouse, France
| | - N Augé
- INSERM UMR-1048, Toulouse, France
| | - R Sabbadini
- Lpath, Inc., and Department of Biology, San Diego State University, San Diego, CA
| | - D Calise
- INSERM UMR-1048, Toulouse, France
| | - E Mucher
- INSERM UMR-1048, Toulouse, France.,Biochemistry Department, University of Toulouse, Faculty of Medicine, Toulouse, France
| | - F Sallusto
- CHU Rangueil, Department of Nephrology, Toulouse, France
| | - M Thomsen
- INSERM UMR-1048, Toulouse, France.,INSERM UMR-1027, Toulouse, France
| | - R Salvayre
- INSERM UMR-1048, Toulouse, France.,Biochemistry Department, University of Toulouse, Faculty of Medicine, Toulouse, France
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Garoby-Salom S, Rouahi M, Mucher E, Auge N, Salvayre R, Negre-Salvayre A. Hyaluronan synthase-2 upregulation protects smpd3-deficient fibroblasts against cell death induced by nutrient deprivation, but not against apoptosis evoked by oxidized LDL. Redox Biol 2014; 4:118-26. [PMID: 25555205 PMCID: PMC4309855 DOI: 10.1016/j.redox.2014.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 12/10/2014] [Accepted: 12/12/2014] [Indexed: 01/02/2023] Open
Abstract
The neutral type 2 sphingomyelinase (nSMase2) hydrolyzes sphingomyelin and generates ceramide, a major bioactive sphingolipid mediator, involved in growth arrest and apoptosis. The role of nSMase2 in apoptosis is debated, and apparently contradictory results have been observed on fibroblasts isolated from nSMase2-deficient fragilitas ossium (homozygous fro/fro) mice. These mice exhibit a severe neonatal dysplasia, a lack of long bone mineralization and delayed apoptosis patterns of hypertrophic chondrocytes in the growth plate. We hypothesized that apoptosis induced by nutrient deprivation, which mimics the environmental modifications of the growth plate, requires nSMase2 activation. In this study, we have compared the resistance of fro/fro fibroblasts to different death inducers (oxidized LDL, hydrogen peroxide and nutrient starvation). The data show that nSMase2-deficient fro/fro cells resist to apoptosis evoked by nutrient starvation (fetal calf serum/glucose/pyruvate-free DMEM), whereas wt fibroblasts die after 48 h incubation in this medium. In contrast, oxidized LDL and hydrogen peroxide are similarly toxic to fro/fro and wt fibroblasts, indicating that nSMase2 is not involved in the mechanism of toxicity evoked by these agents. Interestingly, wt fibroblasts treated with the SMase inhibitor GW4869 were more resistant to starvation-induced apoptosis. The resistance of fro/fro cells to starvation-induced apoptosis is associated with an increased expression of hyaluronan synthase 2 (HAS2) mRNAs and protein, which is inhibited by ceramide. In wt fibroblasts, this HAS2 rise and its protective effect did not occur, but exogenously added HA exhibited a protective effect against starvation-induced apoptosis. The protective mechanism of HAS2 involves an increased expression of the heat-shock protein Hsp72, a chaperone with antiapoptotic activity. Taken together, these results highlight the role of nSMase2 in apoptosis evoked by nutrient starvation that could contribute to the delayed apoptosis of hypertrophic chondrocytes in the growth plate, and emphasize the antiapoptotic properties of HAS2. Apoptosis evoked by oxidized LDL and H2O2 is comparable in fro/fro and wt fibroblasts. fro/fro fibroblasts resist to apoptosis evoked by nutrient starvation. HAS2 increased expression protects fro/fro fibroblasts against apoptosis. HAS2 regulates the expression of the antiapoptotic heat-shock protein HsP72.
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Affiliation(s)
- Sandra Garoby-Salom
- INSERM UMR-1048, BP 84225, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France
| | - Myriam Rouahi
- INSERM UMR-1048, BP 84225, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France
| | - Elodie Mucher
- INSERM UMR-1048, BP 84225, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France
| | - Nathalie Auge
- INSERM UMR-1048, BP 84225, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France
| | - Robert Salvayre
- INSERM UMR-1048, BP 84225, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France
| | - Anne Negre-Salvayre
- INSERM UMR-1048, BP 84225, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France.
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10
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Camaré C, Trayssac M, Garmy-Susini B, Mucher E, Sabbadini R, Salvayre R, Negre-Salvayre A. Oxidized LDL-induced angiogenesis involves sphingosine 1-phosphate: prevention by anti-S1P antibody. Br J Pharmacol 2014; 172:106-18. [PMID: 25176316 DOI: 10.1111/bph.12897] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 08/13/2014] [Accepted: 08/24/2014] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE Neovascularization occurring in atherosclerotic lesions may promote plaque expansion, intraplaque haemorrhage and rupture. Oxidized LDL (oxLDL) are atherogenic, but their angiogenic effect is controversial; both angiogenic and anti-angiogenic effects have been reported. The angiogenic mechanism of oxLDL is partly understood, but the role of the angiogenic sphingolipid, sphingosine 1-phosphate (S1P), in this process is not known. Thus, we investigated whether S1P is involved in the oxLDL-induced angiogenesis and whether an anti-S1P monoclonal antibody can prevent this effect. EXPERIMENTAL APPROACH Angiogenesis was assessed by capillary tube formation by human microvascular endothelial cells (HMEC-1) cultured on Matrigel and in vivo by the Matrigel plug assay in C57BL/6 mice. KEY RESULTS Human oxLDL exhibited a biphasic angiogenic effect on HMEC-1; low concentrations were angiogenic, higher concentrations were cytotoxic. The angiogenic response to oxLDL was blocked by the sphingosine kinase (SPHK) inhibitor, dimethylsphingosine, by SPHK1-siRNA and by an anti-S1P monoclonal antibody. Moreover, inhibition of oxLDL uptake and subsequent redox signalling by anti-CD36 and anti-LOX-1 receptor antibodies and by N-acetylcysteine, respectively, blocked SPHK1 activation and tube formation. In vivo, in the Matrigel plug assay, low concentrations of human oxLDL or murine oxVLDL also triggered angiogenesis, which was prevented by i.p. injection of the anti-S1P antibody. CONCLUSION AND IMPLICATIONS These data highlight the role of S1P in angiogenesis induced by oxLDL both in HMEC-1 cultured on Matrigel and in vivo in the Matrigel plug model in mice, and demonstrate that the anti-S1P antibody effectively blocks the angiogenic effect of oxLDL.
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Affiliation(s)
- Caroline Camaré
- Inserm UMR-1048, Toulouse, France; Department of Biochemistry, University of Toulouse, France
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Larroque-Cardoso P, Mucher E, Grazide MH, Josse G, Schmitt AM, Nadal-Wolbold F, Zarkovic K, Salvayre R, Nègre-Salvayre A. 4-Hydroxynonenal impairs transforming growth factor-β1-induced elastin synthesis via epidermal growth factor receptor activation in human and murine fibroblasts. Free Radic Biol Med 2014; 71:427-436. [PMID: 24561579 DOI: 10.1016/j.freeradbiomed.2014.02.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [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: 12/30/2013] [Revised: 02/12/2014] [Accepted: 02/13/2014] [Indexed: 01/17/2023]
Abstract
Elastin is a long-lived protein and a key component of connective tissues. The tissular elastin content decreases during chronological aging, and the mechanisms underlying its slow repair are not known. Lipid oxidation products that accumulate in aged tissues may generate protein dysfunction. We hypothesized that 4-hydroxynonenal (4-HNE), a highly reactive α,β-aldehydic product generated from polyunsaturated fatty acid peroxidation, could contribute to inhibiting elastin repair by antagonizing the elastogenic signaling of transforming growth factor-β1 (TGF-β1) in skin fibroblasts. We report that a low 4-HNE concentration (2µmol/L) inhibits the upregulation of tropoelastin expression stimulated by TGF-β1 in human and murine fibroblasts. The study of signaling pathways potentially involved in the regulation of elastin expression showed that 4-HNE did not block the phosphorylation of Smad3, an early step of TGF-β1 signaling, but inhibited the nuclear translocation of Smad2. Concomitantly, 4-HNE modified and stimulated the phosphorylation of the epidermal growth factor receptor (EGFR) and subsequently ERK1/2 activation, leading to the phosphorylation/stabilization of the Smad transcriptional corepressor TGIF, which antagonizes TGF-β1 signaling. Inhibitors of EGFR (AG1478) and MEK/ERK (PD98059), and EGFR-specific siRNAs, reversed the inhibitory effect of 4-HNE on TGF-β1-induced nuclear translocation of Smad2 and tropoelastin synthesis. In vivo studies on aortas from aged C57BL/6 mice showed that EGFR is modified by 4-HNE, in correlation with an increased 4-HNE-adduct accumulation and decreased elastin content. Altogether, these data suggest that 4-HNE inhibits the elastogenic activity of TGF-β1, by modifying and activating the EGFR/ERK/TGIF pathway, which may contribute to altering elastin repair in chronological aging and oxidative stress-associated aging processes.
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Affiliation(s)
| | - Elodie Mucher
- INSERM UMR-1048, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France
| | | | - Gwendal Josse
- Centre Européen de Recherche sur la Peau, Pierre Fabre Dermocosmetique, Toulouse, France
| | - Anne-Marie Schmitt
- Centre Européen de Recherche sur la Peau, Pierre Fabre Dermocosmetique, Toulouse, France
| | - Florence Nadal-Wolbold
- Centre Européen de Recherche sur la Peau, Pierre Fabre Dermocosmetique, Toulouse, France
| | | | - Robert Salvayre
- INSERM UMR-1048, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France
| | - Anne Nègre-Salvayre
- INSERM UMR-1048, 31432 Toulouse Cedex 4, France; University of Toulouse, Toulouse, France.
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Muller C, Bandemer J, Vindis C, Camaré C, Mucher E, Guéraud F, Larroque-Cardoso P, Bernis C, Auge N, Salvayre R, Negre-Salvayre A. Protein disulfide isomerase modification and inhibition contribute to ER stress and apoptosis induced by oxidized low density lipoproteins. Antioxid Redox Signal 2013; 18:731-42. [PMID: 23083489 DOI: 10.1089/ars.2012.4577] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIMS Protein disulfide isomerase (PDI) is an abundant endoplasmic reticulum (ER)-resident chaperone and oxidoreductase that catalyzes formation and rearrangement (isomerization) of disulfide bonds, thereby participating in protein folding. PDI modification by nitrosative stress is known to increase protein misfolding, ER stress, and neuronal apoptosis. As LDL oxidation and ER stress may play a role in atherogenesis, this work was designed to investigate whether PDI was inactivated by oxLDLs, thereby participating in oxLDL-induced ER stress and apoptosis. RESULTS Preincubation of human endothelial HMEC-1 and of macrophagic U937 cells with toxic concentration of oxLDLs induced PDI inhibition and modification, as assessed by 4-HNE-PDI adducts formation. PDI inhibition by bacitracin potentiated ER stress (increased mRNA expression of CHOP and sXBP1) and apoptosis induced by oxLDLs. In contrast, increased PDI activity by overexpression of an active wild-type PDI was associated with reduced oxLDL-induced ER stress and toxicity, whereas the overexpression of a mutant inactive form was not protective. These effects on PDI were mimicked by exogenous 4-HNE and prevented by the carbonyl-scavengers N-acetylcysteine and pyridoxamine, which reduced CHOP expression and toxicity by oxLDLs. Interestingly, 4-HNE-modified PDI was detected in the lipid-rich areas of human advanced atherosclerotic lesions. Innovation and CONCLUSIONS PDI modification by oxLDLs or by reactive carbonyls inhibits its enzymatic activity and potentiates both ER stress and apoptosis by oxLDLs. PDI modification by lipid peroxidation products in atherosclerotic lesions suggests that a loss of function of PDI may occur in vivo, and may contribute to local ER stress, apoptosis, and plaque progression.
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Affiliation(s)
- Carole Muller
- Inserm UMR-1048, Team "Atherosclerosis and Graft Arteriosclerosis", Toulouse, France
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Barrey E, Jayr L, Mucher E, Gospodnetic S, Joly F, Benech P, Alibert O, Gidrol X, Mata X, Vaiman A, Guérin G. Transcriptome analysis of muscle in horses suffering from recurrent exertional rhabdomyolysis revealed energetic pathway alterations and disruption in the cytosolic calcium regulation. Anim Genet 2011; 43:271-81. [DOI: 10.1111/j.1365-2052.2011.02246.x] [Citation(s) in RCA: 18] [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: 11/29/2022]
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Abstract
REASONS FOR PERFORMING STUDY Progress could be achieved by using microarrays to understand metabolic adaptations and disorders in equine muscle in response to exercise. OBJECTIVES To test the feasibility of using mouse cDNA microarrays to analyse gene expression profile in normal equine muscles. METHODS Muscular biopsies of dorsal gluteus medius and longissimus lumborum were done in 4 healthy Standardbreds. Total RNA was extracted from the muscle samples. The concentration and quality of RNA were measured before and after amplification. Gene expression profiles were measured using mouse cDNA microarrays including 15,264 unique genes representing about 11,000 documented genes. Three hybridisation tests were performed to check interspecificity, reproducibility and to compare gene expression in these muscles. For each test, a dye-swap hybridisation with Cy3 and Cy5 fluoromarkers were done and the gene list filtered according the signal level. RESULTS According to the specificity test, the mouse cDNA microarrays were correctly hybridised by equine muscle cDNA. All positive control genes (GAPDH, HPRT and beta-Actin) and no negative control gene (yeast, plant) hybridised. The reproducibility test demonstrated a good linearity between the duplicate hybridisations: 99.99% of the significant expressed genes have an expression ratio between 1.4 and 1/1.4 = 0.71. These limits can be considered as the thresholds to qualify as up-regulated (ratio >1.4) or downregulated (ratio <0.71). In the muscle comparison test between gluteus medius vs. longissimus lumborum, 63 genes were found up-regulated and 8 genes down-regulated. The range of gene expression ratios in the gluteus medius was 0.61-8.31 x the longissimus lumborum. This list of modulated genes was classified by functions using a gene ontology data basis. CONCLUSION Mouse microarrays could be used to hybridise equine RNA extracted from muscle tissues. For many genes there are large sequence identities that allowed interspecific cDNA hybridisation. The sensitivity of the method allowed quantification of up- and down-regulated genes after applying appropriate filters. POTENTIAL RELEVANCE Expression profiling could be used to explore the muscle metabolism changes related to exercise, training, pathology and illegal medication in horses.
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Affiliation(s)
- E Mucher
- INRA, Laboratoire d'Etude de la Physiologie de l'Exercice, Genopole, Evry, France
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Maupas-Schwalm F, Bedel A, Augé N, Grazide MH, Mucher E, Thiers JC, Salvayre R, Nègre-Salvayre A. Integrin alpha(v)beta(3), metalloproteinases, and sphingomyelinase-2 mediate urokinase mitogenic effect. Cell Signal 2009; 21:1925-34. [PMID: 19735728 DOI: 10.1016/j.cellsig.2009.08.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2009] [Revised: 08/25/2009] [Accepted: 08/27/2009] [Indexed: 12/27/2022]
Abstract
Plasminogen activators are implicated in the pathogenesis of several diseases such as inflammatory diseases and cancer. Beside their serine-protease activity, these agents trigger signaling pathways involved in cell migration, adhesion and proliferation. We previously reported a role for the sphingolipid pathway in the mitogenic effect of plasminogen activators, but the signaling mechanisms involved in neutral sphingomyelinase-2 (NSMase-2) activation (the first step of the sphingolipid pathway) are poorly known. This study was carried out to investigate how urokinase plasminogen activator (uPA) activates NSMase-2. We report that uPA, as well as its catalytically inactive N-amino fragment ATF, triggers the sequential activation of MMP-2, NSMase-2 and ERK1/2 in ECV304 cells that are required for uPA-induced ECV304 proliferation, as assessed by the inhibitory effect of Marimastat (a MMP inhibitor), MMP-2-specific siRNA, MMP-2 defect, and NSMase-specific siRNA. Moreover, upon uPA stimulation, uPAR, MT1-MMP, MMP-2 and NSMase-2 interacted with integrin alpha(v)beta(3), evidenced by co-immunoprecipitation and immunocytochemistry experiments. Moreover, the alpha(v)beta(3) blocking antibody inhibited the uPA-triggered MMPs/uPAR/integrin alpha(v)beta(3) interaction, NSMase-2 activation, Ki67 expression and DNA synthesis in ECV304. In conclusion, uPA triggers interaction between integrin alpha(v)beta(3), uPAR and MMPs that leads to NSMase-2 and ERK1/2 activation and cell proliferation. These findings highlight a new signaling mechanism for uPA, and suggest that, upon uPA stimulation, uPAR, MMPs, integrin alpha(v)beta(3) and NSMase-2 form a signaling complex that take part in mitogenic signaling in ECV304 cells.
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Affiliation(s)
- Françoise Maupas-Schwalm
- Inserm U858 Team 10, Dept of Biochemistry and Molecular Biology, Faculty of Medicine-Rangueil, University Paul Sabatier Toulouse-3, IFR-150, Toulouse, France.
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Barrey E, Mucher E, Jeansoule N, Larcher T, Guigand L, Herszberg B, Chaffaux S, Guérin G, Mata X, Benech P, Canale M, Alibert O, Maltere P, Gidrol X. Gene expression profiling in equine polysaccharide storage myopathy revealed inflammation, glycogenesis inhibition, hypoxia and mitochondrial dysfunctions. BMC Vet Res 2009; 5:29. [PMID: 19664222 PMCID: PMC2741442 DOI: 10.1186/1746-6148-5-29] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Accepted: 08/07/2009] [Indexed: 12/03/2022] Open
Abstract
Background Several cases of myopathies have been observed in the horse Norman Cob breed. Muscle histology examinations revealed that some families suffer from a polysaccharide storage myopathy (PSSM). It is assumed that a gene expression signature related to PSSM should be observed at the transcriptional level because the glycogen storage disease could also be linked to other dysfunctions in gene regulation. Thus, the functional genomic approach could be conducted in order to provide new knowledge about the metabolic disorders related to PSSM. We propose exploring the PSSM muscle fiber metabolic disorders by measuring gene expression in relationship with the histological phenotype. Results Genotypying analysis of GYS1 mutation revealed 2 homozygous (AA) and 5 heterozygous (GA) PSSM horses. In the PSSM muscles, histological data revealed PAS positive amylase resistant abnormal polysaccharides, inflammation, necrosis, and lipomatosis and active regeneration of fibers. Ultrastructural evaluation revealed a decrease of mitochondrial number and structural disorders. Extensive accumulation of an abnormal polysaccharide displaced and partially replaced mitochondria and myofibrils. The severity of the disease was higher in the two homozygous PSSM horses. Gene expression analysis revealed 129 genes significantly modulated (p < 0.05). The following genes were up-regulated over 2 fold: IL18, CTSS, LUM, CD44, FN1, GST01. The most down-regulated genes were the following: mitochondrial tRNA, SLC2A2, PRKCα, VEGFα. Data mining analysis showed that protein synthesis, apoptosis, cellular movement, growth and proliferation were the main cellular functions significantly associated with the modulated genes (p < 0.05). Several up-regulated genes, especially IL18, revealed a severe muscular inflammation in PSSM muscles. The up-regulation of glycogen synthase kinase-3 (GSK3β) under its active form could be responsible for glycogen synthase (GYS1) inhibition and hypoxia-inducible factor (HIF1α) destabilization. Conclusion The main disorders observed in PSSM muscles could be related to mitochondrial dysfunctions, glycogenesis inhibition and the chronic hypoxia of the PSSM muscles.
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Affiliation(s)
- Eric Barrey
- Unité de Biologie Intégrative des Adaptations à l'Exercice -INSERM 902, Genopole Evry, France.
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Hamon L, Panda D, Savarin P, Joshi V, Bernhard J, Mucher E, Mechulam A, Curmi PA, Pastré D. Mica surface promotes the assembly of cytoskeletal proteins. Langmuir 2009; 25:3331-3335. [PMID: 19275176 DOI: 10.1021/la8035743] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report the surface-mediated polymerization of FtsZ protein, the prokaryote homologue of tubulin, by AFM. FtsZ protein can form filaments on mica whereas the bulk FtsZ concentration is orders of magnitude lower than the critical concentration. Surface polymerization is favored by a local increase in protein concentration and requires a high mobility of proteins on the surface. To generalize to other cytoskeleton protein, we also show that mica can initiate the formation of tubulin protofilaments. This study is of particular interest for studying cytoskeletal protein dynamics by AFM but also for the surface autoassembly of nanostructures.
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Affiliation(s)
- Loic Hamon
- Laboratoire Structure-Activité des Biomolécules Normales et Pathologiques, INSERM/UEVE U829, Evry 91025 France.
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Mechulam A, Chernov KG, Mucher E, Hamon L, Curmi PA, Pastré D. Polyamine sharing between tubulin dimers favours microtubule nucleation and elongation via facilitated diffusion. PLoS Comput Biol 2009; 5:e1000255. [PMID: 19119409 PMCID: PMC2599886 DOI: 10.1371/journal.pcbi.1000255] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [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: 06/17/2008] [Accepted: 11/17/2008] [Indexed: 12/18/2022] Open
Abstract
We suggest for the first time that the action of multivalent cations on microtubule dynamics can result from facilitated diffusion of GTP-tubulin to the microtubule ends. Facilitated diffusion can promote microtubule assembly, because, upon encountering a growing nucleus or the microtubule wall, random GTP-tubulin sliding on their surfaces will increase the probability of association to the target sites (nucleation sites or MT ends). This is an original explanation for understanding the apparent discrepancy between the high rate of microtubule elongation and the low rate of tubulin association at the microtubule ends in the viscous cytoplasm. The mechanism of facilitated diffusion requires an attraction force between two tubulins, which can result from the sharing of multivalent counterions. Natural polyamines (putrescine, spermidine, and spermine) are present in all living cells and are potent agents to trigger tubulin self-attraction. By using an analytical model, we analyze the implication of facilitated diffusion mediated by polyamines on nucleation and elongation of microtubules. In vitro experiments using pure tubulin indicate that the promotion of microtubule assembly by polyamines is typical of facilitated diffusion. The results presented here show that polyamines can be of particular importance for the regulation of the microtubule network in vivo and provide the basis for further investigations into the effects of facilitated diffusion on cytoskeleton dynamics.
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Affiliation(s)
- Alain Mechulam
- Laboratoire Structure-Activité des Biomolécules
Normales et Pathologiques, Université Evry-Val d'Essonne,
Evry, France
- INSERM, U829, Evry, France
| | - Konstantin G. Chernov
- Laboratoire Structure-Activité des Biomolécules
Normales et Pathologiques, Université Evry-Val d'Essonne,
Evry, France
- INSERM, U829, Evry, France
- Institute of Protein Research, Russian Academy of Sciences, Pushchino,
Moscow Region, Russia
| | - Elodie Mucher
- Laboratoire Structure-Activité des Biomolécules
Normales et Pathologiques, Université Evry-Val d'Essonne,
Evry, France
- INSERM, U829, Evry, France
| | - Loic Hamon
- Laboratoire Structure-Activité des Biomolécules
Normales et Pathologiques, Université Evry-Val d'Essonne,
Evry, France
- INSERM, U829, Evry, France
| | - Patrick A. Curmi
- Laboratoire Structure-Activité des Biomolécules
Normales et Pathologiques, Université Evry-Val d'Essonne,
Evry, France
- INSERM, U829, Evry, France
| | - David Pastré
- Laboratoire Structure-Activité des Biomolécules
Normales et Pathologiques, Université Evry-Val d'Essonne,
Evry, France
- INSERM, U829, Evry, France
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Barrey E, Mucher E, Robert C, Amiot F, Gidrol X. Gene expression profiling in blood cells of endurance horses completing competition or disqualified due to metabolic disorder. Equine Vet J 2007:43-9. [PMID: 17402390 DOI: 10.1111/j.2042-3306.2006.tb05511.x] [Citation(s) in RCA: 31] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
REASONS FOR PERFORMING STUDY Genomics using cDNA microarrays could provide useful information about physiological adaptations and metabolic disorders in endurance horses. OBJECTIVES In order to show that genes are modulated in leucocytes in relationship with performance and clinical status of the horses, gene expression in leucocytes, haematological and biochemical parameters were compared between successful and disqualified endurance horses. METHODS Blood samples were collected at rest (TO) and just after a 140-160 km endurance race (T1) in 2 groups of horses: 10 continuing successful (S) and 10 disqualified horses stopped at a vet-gate for metabolic disorders (D). Total RNA was extracted from the blood cells (leucocytes), checked for purity, amplified and hybridised using mouse cDNA microarrays including 15,264 unique genes. Differential gene expressions were studied by hybridisation of each sample T1 vs. a control sample collected at TO (pool of 20 sound horses). RESULTS Some significant differences were observed in the haematology and biochemistry of the 2 groups (S vs. D). In Group D, rhadomyolysis was confirmed with CK 13,124 u/l and AST 1242 u/l. The list of 726 (including 603 annotated genes) significant genes was filtered according to a high P-value cut-off (P<0.00001). Among them, 130 were upregulated (expression ratio>1.5) and 288 were down-regulated (<1/1.5). Analysis of variance revealed 62 genes differentially expressed (P<0.05) in Groups D and S. The expression levels of 28 and 50 genes were significantly correlated (r>0.75) with CK and AST level in Group D, respectively. The gene ontology classification showed that more genes were up-regulated in S than in the D. More genes were down-regulated in the disqualified horses. CONCLUSIONS Long exercise induced many significant gene modulations in leucocytes. Some genes were expressed in relationship with the clinical phenotype observed in Group D: rhabdomyolysis and haemolysis. POTENTIAL RELEVANCE Some of these genes could be candidates to explain poor performance or pathologies. Further association studies with a greater number of genes should be conducted.
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Affiliation(s)
- E Barrey
- INRA, Laboratoire d'Etude de la Physiologie de l'Exercice, Evry University, France
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