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Veres P, Bhat PN, Briggs MS, Cleveland WH, Hamburg R, Hui CM, Mailyan B, Preece RD, Roberts OJ, von Kienlin A, Wilson-Hodge CA, Kocevski D, Arimoto M, Tak D, Asano K, Axelsson M, Barbiellini G, Bissaldi E, Dirirsa FF, Gill R, Granot J, McEnery J, Omodei N, Razzaque S, Piron F, Racusin JL, Thompson DJ, Campana S, Bernardini MG, Kuin NPM, Siegel MH, Cenko SB, O’Brien P, Capalbi M, Daì A, De Pasquale M, Gropp J, Klingler N, Osborne JP, Perri M, Starling RLC, Tagliaferri G, Tohuvavohu A, Ursi A, Tavani M, Cardillo M, Casentini C, Piano G, Evangelista Y, Verrecchia F, Pittori C, Lucarelli F, Bulgarelli A, Parmiggiani N, Anderson GE, Anderson JP, Bernardi G, Bolmer J, Caballero-García MD, Carrasco IM, Castellón A, Segura NC, Castro-Tirado AJ, Cherukuri SV, Cockeram AM, D’Avanzo P, Di Dato A, Diretse R, Fender RP, Fernández-García E, Fynbo JPU, Fruchter AS, Greiner J, Gromadzki M, Heintz KE, Heywood I, van der Horst AJ, Hu YD, Inserra C, Izzo L, Jaiswal V, Jakobsson P, Japelj J, Kankare E, Kann DA, Kouveliotou C, Klose S, Levan AJ, Li XY, Lotti S, Maguire K, Malesani DB, Manulis I, Marongiu M, Martin S, Melandri A, Michałowski MJ, Miller-Jones JCA, Misra K, Moin A, Mooley KP, Nasri S, Nicholl M, Noschese A, Novara G, Pandey SB, Peretti E, del Pulgar CJP, Pérez-Torres MA, Perley DA, Piro L, Ragosta F, Resmi L, Ricci R, Rossi A, Sánchez-Ramírez R, Selsing J, Schulze S, Smartt SJ, Smith IA, Sokolov VV, Stevens J, Tanvir NR, Thöne CC, Tiengo A, Tremou E, Troja E, de Ugarte Postigo A, Valeev AF, Vergani SD, Wieringa M, Woudt PA, Xu D, Yaron O, Young DR. Observation of inverse Compton emission from a long γ-ray burst. Nature 2019; 575:459-463. [DOI: 10.1038/s41586-019-1754-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 10/18/2019] [Indexed: 11/09/2022]
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Farge-Bancel D, Verrecchia F. Tribute to Frédéric Morinet. Curr Res Transl Med 2017. [DOI: 10.1016/j.retram.2017.02.003] [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: 12/01/2022]
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Michel L, Farge D, Baraut J, Marjanovic Z, Jean-Louis F, Porcher R, Grigore EI, Deligny C, Romijn F, Arruda LCM, van Pelt J, Levarht N, Verrecchia F, van Laar JM. Evolution of serum cytokine profile after hematopoietic stem cell transplantation in systemic sclerosis patients. Bone Marrow Transplant 2016; 51:1146-9. [PMID: 27042845 DOI: 10.1038/bmt.2016.77] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- L Michel
- Department of Dermatology, INSERM U976, Skin Research Institute, Hôpital Saint-Louis, Paris, France
| | - D Farge
- Unité Clinique de Médecine Interne, Maladies Autoimmunes et Pathologie Vasculaire, UF 04, Hôpital Saint-Louis, AP-HP Assistance Publique des Hôpitaux de Paris, INSERM UMRS 1160, Paris Denis Diderot University, Paris, France
| | - J Baraut
- Department of Dermatology, INSERM U976, Skin Research Institute, Hôpital Saint-Louis, Paris, France
| | - Z Marjanovic
- Unité Clinique de Médecine Interne, Maladies Autoimmunes et Pathologie Vasculaire, UF 04, Hôpital Saint-Louis, AP-HP Assistance Publique des Hôpitaux de Paris, INSERM UMRS 1160, Paris Denis Diderot University, Paris, France
| | - F Jean-Louis
- Department of Dermatology, INSERM U976, Skin Research Institute, Hôpital Saint-Louis, Paris, France
| | - R Porcher
- Department of Biostatistics, Hôpital Saint-Louis, Paris, France
| | - E I Grigore
- Department of Dermatology, INSERM U976, Skin Research Institute, Hôpital Saint-Louis, Paris, France
| | - C Deligny
- Unité Clinique de Médecine Interne, Maladies Autoimmunes et Pathologie Vasculaire, UF 04, Hôpital Saint-Louis, AP-HP Assistance Publique des Hôpitaux de Paris, INSERM UMRS 1160, Paris Denis Diderot University, Paris, France
| | - F Romijn
- CKCL, Leiden University Medical Centre, Leiden, Netherlands
| | - L C M Arruda
- Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - J van Pelt
- CKCL, Leiden University Medical Centre, Leiden, Netherlands
| | - N Levarht
- Department of Rheumatology, Leiden University Medical Centre, Leiden, Netherlands
| | - F Verrecchia
- INSERM UMRs 957, Nantes University, Nantes, France
| | - J M van Laar
- CKCL, Leiden University Medical Centre, Leiden, Netherlands.,Institute of Cellular Medicine, Newcastle University, Newcastle, UK
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Marisaldi M, Argan A, Ursi A, Gjesteland T, Fuschino F, Labanti C, Galli M, Tavani M, Pittori C, Verrecchia F, D'Amico F, Østgaard N, Mereghetti S, Campana R, Cattaneo P, Bulgarelli A, Colafrancesco S, Dietrich S, Longo F, Gianotti F, Giommi P, Rappoldi A, Trifoglio M, Trois A. Enhanced detection of terrestrial gamma-ray flashes by AGILE. Geophys Res Lett 2015; 42:9481-9487. [PMID: 27773951 PMCID: PMC5054821 DOI: 10.1002/2015gl066100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 10/16/2015] [Accepted: 10/19/2015] [Indexed: 06/06/2023]
Abstract
At the end of March 2015 the onboard software configuration of the Astrorivelatore Gamma a Immagini Leggero (AGILE) satellite was modified in order to disable the veto signal of the anticoincidence shield for the minicalorimeter instrument. The motivation for such a change was the understanding that the dead time induced by the anticoincidence prevented the detection of a large fraction of Terrestrial Gamma-Ray Flashes (TGFs). The configuration change was highly successful resulting in an increase of one order of magnitude in TGF detection rate. As expected, the largest fraction of the new events has short duration (<100 μs), and part of them has simultaneous association with lightning sferics detected by the World Wide Lightning Location Network. The new configuration provides the largest TGF detection rate surface density (TGFs/km2/yr) to date, opening prospects for improved correlation studies with lightning and atmospheric parameters on short spatial and temporal scales along the equatorial region.
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Affiliation(s)
- M. Marisaldi
- INAF‐IASFNational Institute for AstrophysicsBolognaItaly
- Birkeland Centre for Space Science, Department of Physics and TechnologyUniversity of BergenNorway
| | | | - A. Ursi
- INAF‐IAPS RomaRomeItaly
- Dipartimento di FisicaUniversità Tor VergataRomeItaly
| | - T. Gjesteland
- Birkeland Centre for Space Science, Department of Physics and TechnologyUniversity of BergenNorway
- Department of Engineering SciencesUniversity of AgderNorway
| | - F. Fuschino
- INAF‐IASFNational Institute for AstrophysicsBolognaItaly
- Dipartimento di Fisica e AstronomiaUniversità di BolognaBolognaItaly
| | - C. Labanti
- INAF‐IASFNational Institute for AstrophysicsBolognaItaly
| | | | - M. Tavani
- INAF‐IAPS RomaRomeItaly
- Dipartimento di FisicaUniversità Tor VergataRomeItaly
| | - C. Pittori
- ASI Science Data CenterRomeItaly
- INAF‐OARMonteporzio CatoneRomeItaly
| | - F. Verrecchia
- ASI Science Data CenterRomeItaly
- INAF‐OARMonteporzio CatoneRomeItaly
| | | | - N. Østgaard
- Birkeland Centre for Space Science, Department of Physics and TechnologyUniversity of BergenNorway
| | | | - R. Campana
- INAF‐IASFNational Institute for AstrophysicsBolognaItaly
| | | | - A. Bulgarelli
- INAF‐IASFNational Institute for AstrophysicsBolognaItaly
| | - S. Colafrancesco
- INAF‐OARMonteporzio CatoneRomeItaly
- School of PhysicsUniversity of the WitwatersrandJohannesburgSouth Africa
| | | | - F. Longo
- Dipartimento di FisicaUniversità di TriesteTriesteItaly
- INFN TriesteTriesteItaly
| | - F. Gianotti
- INAF‐IASFNational Institute for AstrophysicsBolognaItaly
| | | | | | - M. Trifoglio
- INAF‐IASFNational Institute for AstrophysicsBolognaItaly
| | - A. Trois
- INAF‐Osservatorio Astronomico di CagliariCapoterraItaly
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Farge-Bancel D, Verrecchia F, Robert L, Morinet F. [Sixty years of Pathologie Biologie]. ACTA ACUST UNITED AC 2014; 62:59. [PMID: 24656440 DOI: 10.1016/j.patbio.2014.02.004] [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] [Received: 11/15/2013] [Accepted: 02/17/2014] [Indexed: 11/16/2022]
Affiliation(s)
- D Farge-Bancel
- Service de médecine interne et pathologie vasculaire, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75475 Paris cedex 10, France
| | - F Verrecchia
- U957, laboratoire de physiopathologie de la résorption osseuse et thérapie des tumeurs osseuses primitives, faculté de médecine, 1, rue Gaston-Veil, 44000 Nantes, France
| | - L Robert
- Laboratoire de recherche ophtalmologique, université Paris 5, hôpital Hôtel-Dieu, 1, place du Parvis-Notre-Dame, 75004 Paris, France.
| | - F Morinet
- Centre d'innovations thérapeutiques en onco-hématologie (CITOH), hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75475 Paris cedex 10, France
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Baraut J, Grigore EI, Jean-Louis F, Khelifa SH, Durand C, Verrecchia F, Farge D, Michel L. Peripheral blood regulatory T cells in patients with diffuse systemic sclerosis (SSc) before and after autologous hematopoietic SCT: a pilot study. Bone Marrow Transplant 2013; 49:349-54. [DOI: 10.1038/bmt.2013.202] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 09/26/2013] [Accepted: 10/10/2013] [Indexed: 02/04/2023]
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Verrecchia F, Farge-Bancel D. [ Gap junctional intercellular communication]. ACTA ACUST UNITED AC 2012. [PMID: 23206435 DOI: 10.1016/j.patbio.2012.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Farge D, Robert L, Verrecchia F. [Introduction to this issue]. ACTA ACUST UNITED AC 2012; 60:155. [PMID: 22655680 DOI: 10.1016/j.patbio.2012.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Testori A, Ferrucci P, Pennacchioli E, Bonomo G, Verrecchia F, Monfardini L, Cocorocchio E, Della Vigna P, Spadola G, Orsi F. 427. Chemosaturation Therapy with Percutaneous Hepatic Perfusion (CS-PHP) for Unresectable Hepatic Metastases - the European Institute of Oncology (EIO) Experience. Eur J Surg Oncol 2012. [DOI: 10.1016/j.ejso.2012.06.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Baraut J, Farge D, Jean-Louis F, Kesmandt H, Durant C, Verrecchia F, Michel L. Les cytokines dans la sclérodermie systémique. ACTA ACUST UNITED AC 2012; 60:127-39. [DOI: 10.1016/j.patbio.2009.11.003] [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] [Received: 11/10/2009] [Accepted: 11/17/2009] [Indexed: 12/20/2022]
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Chemel M, Le Goff B, Brion R, Cozic C, Berreur M, Amiaud J, Bougras G, Touchais S, Blanchard F, Heymann MF, Berthelot JM, Verrecchia F, Heymann D. Interleukin 34 expression is associated with synovitis severity in rheumatoid arthritis patients. Ann Rheum Dis 2011; 71:150-4. [PMID: 22039170 DOI: 10.1136/annrheumdis-2011-200096] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES Interleukin (IL) 34 is a new cytokine implicated in macrophage differentiation and osteoclastogenesis. This study assessed IL-34 expression in the tissue of patients with rheumatoid arthritis (RA). METHODS Immunohistochemistry was performed in synovial biopsies from patients with RA (n=20), osteoarthritis (n=3) or other inflammatory arthritis (n=4). IL-34 was detected in the synovial fluid by ELISA and its messenger RNA expression was studied by quantitative PCR in rheumatoid synovial fibroblasts after stimulation by tumour necrosis factor α (TNFα) and IL-1β. Wild-type, jnk1(-/-)-jnk2(-/-) and nemo(-/-) murine fibroblasts and pharmacological inhibition were used to determine the involvement of nuclear factor kappa B (NF-κB) and JNK in that effect. RESULTS IL-34 was expressed in 24/27 biopsies, with three samples from RA patients being negative. A significant association was found between IL-34 expression and synovitis severity. Levels of IL-34 and the total leucocyte count in synovial fluid were correlated. TNFα and IL-1β stimulated IL-34 expression by synovial fibroblasts in a dose/time-dependent manner through the NF-κB and JNK pathway. CONCLUSION This work for the first time identifies IL-34 expression in the synovial tissue of patients with arthritis. This cytokine, as a downstream effector of TNFα and IL-1β, may contribute to inflammation and bone erosions in RA.
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Moriceau G, Ory B, Gobin B, Verrecchia F, Gouin F, Blanchard F, Redini F, Heymann D. Therapeutic approach of primary bone tumours by bisphosphonates. Curr Pharm Des 2011; 16:2981-7. [PMID: 20722622 DOI: 10.2174/138161210793563554] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 07/12/2010] [Indexed: 11/22/2022]
Abstract
Bone tumours can be dissociated in two main categories: i) primary bone tumours (benign or malignant) including mainly osteosarcoma and other sarcomas.ii)and giant cell tumour and bone metastases originate from others cancer (Breast, prostate, kidney cancer, etc). These tumours are able to destroy or/and induce a new calcified matrix. However, the first step of bone tumour development is associated with an induction of bone resorption and the establishment of a vicious cycle between the osteoclasts and the tumour growth. Indeed, bone resorption contributes to the pathogenesis of bone tumour by the release of cytokines (IL6, TNFα) which govern the bone tumour's development and which are trapped into the bone matrix. Bisphosphonates (BPs) are chemical compounds of P-C-P structure with a high affinity for bone hydroxyapatite crystals. Thus, they have been used as a carrier for radio nucleotides to develop novel approaches of bone imaging. BPs exert also indirect anti-tumour activities in vivo. Indeed, BPs directly interfere with the bone microenvironment and target osteoclasts, endothelial cells and immune cells (tumour-associated macrophages, γ9δ2 T cells). BPs induce tumour cell death in vitro and same activity is suspected in vivo. The present review summarizes the mechanisms of actions of BPs as well as their clinical interests in bone primary tumours.
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Affiliation(s)
- G Moriceau
- INSERM, UMR-S 957, Nantes, F-44035 France
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Tavani M, Bulgarelli A, Vittorini V, Pellizzoni A, Striani E, Caraveo P, Weisskopf MC, Tennant A, Pucella G, Trois A, Costa E, Evangelista Y, Pittori C, Verrecchia F, Del Monte E, Campana R, Pilia M, De Luca A, Donnarumma I, Horns D, Ferrigno C, Heinke CO, Trifoglio M, Gianotti F, Vercellone S, Argan A, Barbiellini G, Cattaneo PW, Chen AW, Contessi T, D’Ammando F, DeParis G, Di Cocco G, Di Persio G, Feroci M, Ferrari A, Galli M, Giuliani A, Giusti M, Labanti C, Lapshov I, Lazzarotto F, Lipari P, Longo F, Fuschino F, Marisaldi M, Mereghetti S, Morelli E, Moretti E, Morselli A, Pacciani L, Perotti F, Piano G, Picozza P, Prest M, Rapisarda M, Rappoldi A, Rubini A, Sabatini S, Soffitta P, Vallazza E, Zambra A, Zanello D, Lucarelli F, Santolamazza P, Giommi P, Salotti L, Bignami GF. Discovery of Powerful Gamma-Ray Flares from the Crab Nebula. Science 2011; 331:736-9. [DOI: 10.1126/science.1200083] [Citation(s) in RCA: 249] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- M. Tavani
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
- Dipartimento di Fisica, Università degli Studi di Roma “Tor Vergata,” via della Ricerca Scientifica 1, 00133 Roma, Italy
- Consorzio Interuniversitario Fisica Spaziale (CIFS), villa Gualino, v.le Settimio Severo 63, 10133 Torino, Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - A. Bulgarelli
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - V. Vittorini
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - A. Pellizzoni
- INAF Osservatorio Astronomico di Cagliari, Poggio dei Pini, 09012 Capoterra, Italy
| | - E. Striani
- Dipartimento di Fisica, Università degli Studi di Roma “Tor Vergata,” via della Ricerca Scientifica 1, 00133 Roma, Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - P. Caraveo
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
| | - M. C. Weisskopf
- NASA, Marshall Space Flight Center, Huntsville, AL 35812, USA
| | - A. Tennant
- NASA, Marshall Space Flight Center, Huntsville, AL 35812, USA
| | - G. Pucella
- Ente per le Nuove tecnologie, l’Energia e l’Ambiente (ENEA) Frascati, via Enrico Fermi 45, 00044 Frascati(RM), Italy
| | - A. Trois
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - E. Costa
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Y. Evangelista
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - C. Pittori
- Agenzia Spatiale Italiana (ASI) Science Data Center, European Space Agency (ESA) Centre for Earth Observation (ESRIN), 00044 Frascati, Italy
| | - F. Verrecchia
- Agenzia Spatiale Italiana (ASI) Science Data Center, European Space Agency (ESA) Centre for Earth Observation (ESRIN), 00044 Frascati, Italy
| | - E. Del Monte
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - R. Campana
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - M. Pilia
- INAF Osservatorio Astronomico di Cagliari, Poggio dei Pini, 09012 Capoterra, Italy
- Dipartimento di Fisica, Università degli Studi dell’ Insubria, via Valleggio 11, 22100, Como, Italy
| | - A. De Luca
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
- Istituto Universitario di Studi Superiori (IUSS), I-27100 Pavia, Italy
| | - I. Donnarumma
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - D. Horns
- Institut fuer Experimentalphysik, University of Hamburg, Hamburg 22761, Germany
| | - C. Ferrigno
- Integral Science Data Centre, University of Geneva, Geneva Chemin d’Ecogia 16, CH-1290 Versoix, Switzerland
| | - C. O. Heinke
- Department of Physics, University of Alberta, Edmonton, Alberta T6G 2G7, Canada
| | - M. Trifoglio
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - F. Gianotti
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - S. Vercellone
- INAF-IASF Palermo, via La Malfa 153, 90146 Palermo, Italy
| | - A. Argan
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - G. Barbiellini
- Consorzio Interuniversitario Fisica Spaziale (CIFS), villa Gualino, v.le Settimio Severo 63, 10133 Torino, Italy
- Dipartimento di Fisica, Università di Trieste, via A. Valerio 2, 34127 Trieste, Italy
- INFN Trieste, Padriciano 99, 34012 Trieste, Italy
| | | | - A. W. Chen
- Consorzio Interuniversitario Fisica Spaziale (CIFS), villa Gualino, v.le Settimio Severo 63, 10133 Torino, Italy
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
| | - T. Contessi
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
| | - F. D’Ammando
- INAF-IASF Palermo, via La Malfa 153, 90146 Palermo, Italy
| | - G. DeParis
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - G. Di Cocco
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - G. Di Persio
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - M. Feroci
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - A. Ferrari
- Consorzio Interuniversitario Fisica Spaziale (CIFS), villa Gualino, v.le Settimio Severo 63, 10133 Torino, Italy
- Dipartimento di Fisica Generale, Università degli Studi di Torino, via P. Giuria 1, 10125 Torino, Italy
| | - M. Galli
- ENEA Bologna, via don Fiammelli 2, 40128 Bologna, Italy
| | - A. Giuliani
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
| | - M. Giusti
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
- Consorzio Interuniversitario Fisica Spaziale (CIFS), villa Gualino, v.le Settimio Severo 63, 10133 Torino, Italy
| | - C. Labanti
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - I. Lapshov
- Space Research Institute, Russian Academy of Sciences, 84/32 Profsoyuznaya Street, 117997 Moscow, Russia
| | - F. Lazzarotto
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - P. Lipari
- INFN Roma 1, p.le Aldo Moro 2, 00185 Roma, Italy
- Dipartimento di Fisica, Università degli Studi di Roma “La Sapienza,” p.le Aldo Moro 2, 00185 Roma, Italy
| | - F. Longo
- Dipartimento di Fisica, Università di Trieste, via A. Valerio 2, 34127 Trieste, Italy
- INFN Trieste, Padriciano 99, 34012 Trieste, Italy
| | - F. Fuschino
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - M. Marisaldi
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - S. Mereghetti
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
| | - E. Morelli
- INAF-IASF Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - E. Moretti
- Dipartimento di Fisica, Università di Trieste, via A. Valerio 2, 34127 Trieste, Italy
- INFN Trieste, Padriciano 99, 34012 Trieste, Italy
| | - A. Morselli
- Istituto Nazionale di Fisica Nucleare (INFN) Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - L. Pacciani
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - F. Perotti
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
| | - G. Piano
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - P. Picozza
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - M. Prest
- Dipartimento di Fisica, Università degli Studi dell’ Insubria, via Valleggio 11, 22100, Como, Italy
| | - M. Rapisarda
- Ente per le Nuove tecnologie, l’Energia e l’Ambiente (ENEA) Frascati, via Enrico Fermi 45, 00044 Frascati(RM), Italy
| | | | - A. Rubini
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - S. Sabatini
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
- Istituto Nazionale di Fisica Nucleare (INFN) Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - P. Soffitta
- Istituto Nazionale di Astrofisica–Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Roma, via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - E. Vallazza
- INFN Trieste, Padriciano 99, 34012 Trieste, Italy
| | - A. Zambra
- Consorzio Interuniversitario Fisica Spaziale (CIFS), villa Gualino, v.le Settimio Severo 63, 10133 Torino, Italy
- INAF-IASF Milano, via E. Bassini 15, 20133 Milano, Italy
| | - D. Zanello
- INFN Roma 1, p.le Aldo Moro 2, 00185 Roma, Italy
- Dipartimento di Fisica, Università degli Studi di Roma “La Sapienza,” p.le Aldo Moro 2, 00185 Roma, Italy
| | - F. Lucarelli
- Agenzia Spatiale Italiana (ASI) Science Data Center, European Space Agency (ESA) Centre for Earth Observation (ESRIN), 00044 Frascati, Italy
| | - P. Santolamazza
- Agenzia Spatiale Italiana (ASI) Science Data Center, European Space Agency (ESA) Centre for Earth Observation (ESRIN), 00044 Frascati, Italy
| | - P. Giommi
- Agenzia Spatiale Italiana (ASI) Science Data Center, European Space Agency (ESA) Centre for Earth Observation (ESRIN), 00044 Frascati, Italy
| | | | - G. F. Bignami
- Istituto Universitario di Studi Superiori (IUSS), I-27100 Pavia, Italy
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14
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Tavani M, Marisaldi M, Labanti C, Fuschino F, Argan A, Trois A, Giommi P, Colafrancesco S, Pittori C, Palma F, Trifoglio M, Gianotti F, Bulgarelli A, Vittorini V, Verrecchia F, Salotti L, Barbiellini G, Caraveo P, Cattaneo PW, Chen A, Contessi T, Costa E, D'Ammando F, Del Monte E, De Paris G, Di Cocco G, Di Persio G, Donnarumma I, Evangelista Y, Feroci M, Ferrari A, Galli M, Giuliani A, Giusti M, Lapshov I, Lazzarotto F, Lipari P, Longo F, Mereghetti S, Morelli E, Moretti E, Morselli A, Pacciani L, Pellizzoni A, Perotti F, Piano G, Picozza P, Pilia M, Pucella G, Prest M, Rapisarda M, Rappoldi A, Rossi E, Rubini A, Sabatini S, Scalise E, Soffitta P, Striani E, Vallazza E, Vercellone S, Zambra A, Zanello D. Terrestrial gamma-ray flashes as powerful particle accelerators. Phys Rev Lett 2011; 106:018501. [PMID: 21231775 DOI: 10.1103/physrevlett.106.018501] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Indexed: 05/30/2023]
Abstract
Strong electric discharges associated with thunderstorms can produce terrestrial gamma-ray flashes (TGFs), i.e., intense bursts of x rays and γ rays lasting a few milliseconds or less. We present in this Letter new TGF timing and spectral data based on the observations of the Italian Space Agency AGILE satellite. We determine that the TGF emission above 10 MeV has a significant power-law spectral component reaching energies up to 100 MeV. These results challenge TGF theoretical models based on runaway electron acceleration. The TGF discharge electric field accelerates particles over the large distances for which maximal voltages of hundreds of megavolts can be established. The combination of huge potentials and large electric fields in TGFs can efficiently accelerate particles in large numbers, and we reconsider here the photon spectrum and the neutron production by photonuclear reactions in the atmosphere.
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Affiliation(s)
- M Tavani
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
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15
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Marisaldi M, Argan A, Trois A, Giuliani A, Tavani M, Labanti C, Fuschino F, Bulgarelli A, Longo F, Barbiellini G, Del Monte E, Moretti E, Trifoglio M, Costa E, Caraveo P, Cattaneo PW, Chen A, D'Ammando F, De Paris G, Di Cocco G, Di Persio G, Donnarumma I, Evangelista Y, Feroci M, Ferrari A, Fiorini M, Froysland T, Galli M, Gianotti F, Lapshov I, Lazzarotto F, Lipari P, Mereghetti S, Morselli A, Pacciani L, Pellizzoni A, Perotti F, Picozza P, Piano G, Pilia M, Prest M, Pucella G, Rapisarda M, Rappoldi A, Rubini A, Sabatini S, Soffitta P, Striani E, Vallazza E, Vercellone S, Vittorini V, Zambra A, Zanello D, Antonelli LA, Colafrancesco S, Cutini S, Giommi P, Lucarelli F, Pittori C, Santolamazza P, Verrecchia F, Salotti L. Gamma-ray localization of terrestrial gamma-ray flashes. Phys Rev Lett 2010; 105:128501. [PMID: 20867680 DOI: 10.1103/physrevlett.105.128501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Indexed: 05/29/2023]
Abstract
Terrestrial gamma-ray flashes (TGFs) are very short bursts of high-energy photons and electrons originating in Earth's atmosphere. We present here a localization study of TGFs carried out at gamma-ray energies above 20 MeV based on an innovative event selection method. We use the AGILE satellite Silicon Tracker data that for the first time have been correlated with TGFs detected by the AGILE Mini-Calorimeter. We detect 8 TGFs with gamma-ray photons of energies above 20 MeV localized by the AGILE gamma-ray imager with an accuracy of ∼5-10° at 50 MeV. Remarkably, all TGF-associated gamma rays are compatible with a terrestrial production site closer to the subsatellite point than 400 km. Considering that our gamma rays reach the AGILE satellite at 540 km altitude with limited scattering or attenuation, our measurements provide the first precise direct localization of TGFs from space.
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Affiliation(s)
- M Marisaldi
- INAF-IASF Bologna, Via Gobetti 101, I-40129 Bologna, Italy
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16
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di Pietro A, Ferrucci P, Munzone E, Mosconi M, Gandini S, Pari C, Cataldo F, Verrecchia F, Nole F, Testori A. Dacarbazine (DTIC) plus bevacizumab (B) combination therapy in chemotherapy (CTh)-naïve advanced melanoma (MM) patients (pts): A phase II study. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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17
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Testori A, Verrecchia F, Soteldo J, Spadola G, Martinoli C, Gandini S, Passoni C, Cataldo F, Di Pietro A, Ferrucci P. Electrochemotherapy with bleomycin: A local treatment with possible systemic implication. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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18
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Marisaldi M, Fuschino F, Labanti C, Galli M, Longo F, Del Monte E, Barbiellini G, Tavani M, Giuliani A, Moretti E, Vercellone S, Costa E, Cutini S, Donnarumma I, Evangelista Y, Feroci M, Lapshov I, Lazzarotto F, Lipari P, Mereghetti S, Pacciani L, Rapisarda M, Soffitta P, Trifoglio M, Argan A, Boffelli F, Bulgarelli A, Caraveo P, Cattaneo PW, Chen A, Cocco V, D'Ammando F, De Paris G, Di Cocco G, Di Persio G, Ferrari A, Fiorini M, Froysland T, Gianotti F, Morselli A, Pellizzoni A, Perotti F, Picozza P, Piano G, Pilia M, Prest M, Pucella G, Rappoldi A, Rubini A, Sabatini S, Striani E, Trois A, Vallazza E, Vittorini V, Zambra A, Zanello D, Antonelli LA, Colafrancesco S, Gasparrini D, Giommi P, Pittori C, Preger B, Santolamazza P, Verrecchia F, Salotti L. Detection of terrestrial gamma ray flashes up to 40 MeV by the AGILE satellite. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja014502] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | | | - F. Longo
- Dipartimento di Fisica; Università di Trieste; Trieste Italy
| | | | - G. Barbiellini
- Dipartimento di Fisica; Università di Trieste; Trieste Italy
- INFN; Trieste Italy
| | - M. Tavani
- IASF, INAF; Rome Italy
- Dipartimento di Fisica; Università degli Studi di Roma “Tor Vergata,”; Rome Italy
| | | | - E. Moretti
- Dipartimento di Fisica; Università di Trieste; Trieste Italy
| | | | | | - S. Cutini
- ASI Science Data Center; Frascati Italy
| | | | | | | | - I. Lapshov
- IASF, INAF; Rome Italy
- IKI; Moscow Russia
| | | | - P. Lipari
- INFN; Rome Italy
- Dipartimento di Fisica; Università degli Studi di Roma “La Sapienza,”; Rome Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | - F. D'Ammando
- IASF, INAF; Rome Italy
- Dipartimento di Fisica; Università degli Studi di Roma “Tor Vergata,”; Rome Italy
| | | | | | | | - A. Ferrari
- CIFS; Turin Italy
- Dipartimento di Fisica; Università Torino; Turin Italy
| | | | - T. Froysland
- Dipartimento di Fisica; Università degli Studi di Roma “Tor Vergata,”; Rome Italy
- CIFS; Turin Italy
| | | | | | - A. Pellizzoni
- Osservatorio Astronomico di Cagliari; INAF; Capoterra Italy
| | | | | | - G. Piano
- IASF, INAF; Rome Italy
- Dipartimento di Fisica; Università degli Studi di Roma “Tor Vergata,”; Rome Italy
- INFN; Rome Italy
| | - M. Pilia
- Dipartimento di Fisica; Università dell'Insubria; Como Italy
| | - M. Prest
- Dipartimento di Fisica; Università dell'Insubria; Como Italy
- INFN; Milan Italy
| | | | | | | | | | - E. Striani
- IASF, INAF; Rome Italy
- Dipartimento di Fisica; Università degli Studi di Roma “Tor Vergata,”; Rome Italy
- INFN; Rome Italy
| | | | | | | | - A. Zambra
- IASF, INAF; Milan Italy
- CIFS; Turin Italy
| | | | | | | | | | - P. Giommi
- ASI Science Data Center; Frascati Italy
| | | | - B. Preger
- ASI Science Data Center; Frascati Italy
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19
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Pellizzoni A, Trois A, Tavani M, Pilia M, Giuliani A, Pucella G, Esposito P, Sabatini S, Piano G, Argan A, Barbiellini G, Bulgarelli A, Burgay M, Caraveo P, Cattaneo PW, Chen AW, Cocco V, Contessi T, Costa E, D’Ammando F, Del Monte E, De Paris G, Di Cocco G, Di Persio G, Donnarumma I, Evangelista Y, Feroci M, Ferrari A, Fiorini M, Fuschino F, Galli M, Gianotti F, Hotan A, Labanti C, Lapshov I, Lazzarotto F, Lipari P, Longo F, Marisaldi M, Mastropietro M, Mereghetti S, Moretti E, Morselli A, Pacciani L, Palfreyman J, Perotti F, Picozza P, Pittori C, Possenti A, Prest M, Rapisarda M, Rappoldi A, Rossi E, Rubini A, Santolamazza P, Scalise E, Soffitta P, Striani E, Trifoglio M, Vallazza E, Vercellone S, Verrecchia F, Vittorini V, Zambra A, Zanello D, Giommi P, Colafrancesco S, Antonelli A, Salotti L, D’Amico N, Bignami GF. Detection of Gamma-Ray Emission from the Vela Pulsar Wind Nebula with AGILE. Science 2010; 327:663-5. [DOI: 10.1126/science.1183844] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- A. Pellizzoni
- INAF–Osservatorio Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, I-09012, Capoterra (CA), Italy
| | - A. Trois
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - M. Tavani
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
- Dipartimento di Fisica, Università Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
- INFN-Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
- Consorzio Interuniversitario per la Fisica Spaziale, viale Settimio Severo 63, I-10133 Torino, Italy
| | - M. Pilia
- INAF–Osservatorio Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, I-09012, Capoterra (CA), Italy
- Dipartimento di Fisica, Università dell’Insubria, via Valleggio 11, I-22100 Como, Italy
| | - A. Giuliani
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | - G. Pucella
- ENEA Frascati, via E. Fermi 45, I-00044 Frascati (Roma), Italy
| | - P. Esposito
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
- INFN-Pavia, via A. Bassi 6, I-27100 Pavia, Italy
| | - S. Sabatini
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
- INFN-Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - G. Piano
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
- INFN-Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - A. Argan
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | | | - A. Bulgarelli
- INAF-IASF Bologna, via P. Gobetti 101, I-40129 Bologna, Italy
| | - M. Burgay
- INAF–Osservatorio Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, I-09012, Capoterra (CA), Italy
| | - P. Caraveo
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | | | - A. W. Chen
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | - V. Cocco
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - T. Contessi
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | - E. Costa
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - F. D’Ammando
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
- Dipartimento di Fisica, Università Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - E. Del Monte
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - G. De Paris
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - G. Di Cocco
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - G. Di Persio
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - I. Donnarumma
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - Y. Evangelista
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - M. Feroci
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - A. Ferrari
- Consorzio Interuniversitario per la Fisica Spaziale, viale Settimio Severo 63, I-10133 Torino, Italy
| | - M. Fiorini
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | - F. Fuschino
- INAF-IASF Bologna, via P. Gobetti 101, I-40129 Bologna, Italy
| | - M. Galli
- ENEA Bologna, via don G. Fiammelli 2, I-40128 Bologna, Italy
| | - F. Gianotti
- INAF-IASF Bologna, via P. Gobetti 101, I-40129 Bologna, Italy
| | - A. Hotan
- Curtin University of Technology, 78 Murray Street, Perth, WA 6000, Australia
| | - C. Labanti
- INAF-IASF Bologna, via P. Gobetti 101, I-40129 Bologna, Italy
| | - I. Lapshov
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - F. Lazzarotto
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - P. Lipari
- INFN-Roma La Sapienza, p.le A. Moro 2, I-00185 Roma, Italy
| | - F. Longo
- INFN-Trieste, Padriciano 99, I-34012 Trieste, Italy
| | - M. Marisaldi
- INAF-IASF Bologna, via P. Gobetti 101, I-40129 Bologna, Italy
| | - M. Mastropietro
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - S. Mereghetti
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | - E. Moretti
- INFN-Trieste, Padriciano 99, I-34012 Trieste, Italy
| | - A. Morselli
- INFN-Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - L. Pacciani
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - J. Palfreyman
- School of Mathematics and Physics, University of Tasmania, Hobart, TAS 7001, Australia
| | - F. Perotti
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | - P. Picozza
- Dipartimento di Fisica, Università Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
- INFN-Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - C. Pittori
- ASI Science Data Center, ESRIN, I-00044 Frascati (Roma), Italy
| | - A. Possenti
- INAF–Osservatorio Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, I-09012, Capoterra (CA), Italy
| | - M. Prest
- Dipartimento di Fisica, Università dell’Insubria, via Valleggio 11, I-22100 Como, Italy
| | - M. Rapisarda
- ENEA Frascati, via E. Fermi 45, I-00044 Frascati (Roma), Italy
| | - A. Rappoldi
- INFN-Pavia, via A. Bassi 6, I-27100 Pavia, Italy
| | - E. Rossi
- INAF-IASF Bologna, via P. Gobetti 101, I-40129 Bologna, Italy
| | - A. Rubini
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - P. Santolamazza
- ASI Science Data Center, ESRIN, I-00044 Frascati (Roma), Italy
| | - E. Scalise
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - P. Soffitta
- INAF-IASF Roma, via del Fosso del Cavaliere 100, I-00133 Roma, Italy
| | - E. Striani
- Dipartimento di Fisica, Università Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
- INFN-Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - M. Trifoglio
- INAF-IASF Bologna, via P. Gobetti 101, I-40129 Bologna, Italy
| | - E. Vallazza
- INFN-Trieste, Padriciano 99, I-34012 Trieste, Italy
| | - S. Vercellone
- INAF-IASF Palermo, via U. La Malfa 153, I-90146 Palermo, Italy
| | - F. Verrecchia
- ASI Science Data Center, ESRIN, I-00044 Frascati (Roma), Italy
| | - V. Vittorini
- Dipartimento di Fisica, Università Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, Italy
| | - A. Zambra
- INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy
| | - D. Zanello
- INFN-Roma La Sapienza, p.le A. Moro 2, I-00185 Roma, Italy
| | - P. Giommi
- ASI Science Data Center, ESRIN, I-00044 Frascati (Roma), Italy
| | | | - A. Antonelli
- ASI Science Data Center, ESRIN, I-00044 Frascati (Roma), Italy
| | - L. Salotti
- ASI–Agenzia Spaziale Italiana, viale Liegi 26, I-00198 Roma, Italy
| | - N. D’Amico
- INAF–Osservatorio Astronomico di Cagliari, loc. Poggio dei Pini, strada 54, I-09012, Capoterra (CA), Italy
- Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato (CA), Italy
| | - G. F. Bignami
- Istituto Universitario di Studi Superiori, viale Lungo Ticino Sforza 56, I-27100 Pavia, Italy
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Van Laar J, Farge D, Baraut J, Verrecchia F, Michel L. Analyse des taux sériques de cytokines avant et après greffe de cellules souches hématopoïétiques périphériques chez des patients atteints de sclérodermie systémique sévère. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tavani M, Bulgarelli A, Piano G, Sabatini S, Striani E, Evangelista Y, Trois A, Pooley G, Trushkin S, Nizhelskij NA, McCollough M, Koljonen KII, Pucella G, Giuliani A, Chen AW, Costa E, Vittorini V, Trifoglio M, Gianotti F, Argan A, Barbiellini G, Caraveo P, Cattaneo PW, Cocco V, Contessi T, D’Ammando F, Monte ED, De Paris G, Di Cocco G, Di Persio G, Donnarumma I, Feroci M, Ferrari A, Fuschino F, Galli M, Labanti C, Lapshov I, Lazzarotto F, Lipari P, Longo F, Mattaini E, Marisaldi M, Mastropietro M, Mauri A, Mereghetti S, Morelli E, Morselli A, Pacciani L, Pellizzoni A, Perotti F, Picozza P, Pilia M, Prest M, Rapisarda M, Rappoldi A, Rossi E, Rubini A, Scalise E, Soffitta P, Vallazza E, Vercellone S, Zambra A, Zanello D, Pittori C, Verrecchia F, Giommi P, Colafrancesco S, Santolamazza P, Antonelli A, Salotti L. Extreme particle acceleration in the microquasar Cygnus X-3. Nature 2009; 462:620-3. [DOI: 10.1038/nature08578] [Citation(s) in RCA: 141] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Accepted: 10/08/2009] [Indexed: 11/09/2022]
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Verrecchia F, Michel L, Keshtmand H, Wang Y, Launay D, Farge D. Existe-t-il une action antifibrosante spécifique des immunosuppresseurs utilisés pour traiter la sclérodermie systémique ? Rev Med Interne 2009; 30:955-62. [DOI: 10.1016/j.revmed.2009.02.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2008] [Revised: 02/16/2009] [Accepted: 02/25/2009] [Indexed: 10/20/2022]
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Testori A, Soteldo J, Sances D, Mazzarol G, Trifirò G, Verrecchia F. P81 Cutaneous melanoma in the elderly. Crit Rev Oncol Hematol 2009. [DOI: 10.1016/s1040-8428(09)70119-2] [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] Open
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Berrou J, Tostivint I, Verrecchia F, Berthier C, Boulanger E, Mauviel A, Marti HP, Wautier MP, Wautier JL, Rondeau E, Hertig A. Advanced glycation end products regulate extracellular matrix protein and protease expression by human glomerular mesangial cells. Int J Mol Med 2009; 23:513-20. [PMID: 19288028 DOI: 10.3892/ijmm_00000159] [Citation(s) in RCA: 10] [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] [Indexed: 11/06/2022] Open
Abstract
Advanced glycation end products (AGEs) may play a role in the pathogenesis of diabetic nephropathy, by modulating extracellular matrix turnover. AGEs are known to activate specific membrane receptors, including the receptor for AGE (RAGE). In the present study, we analyzed the various receptors for AGEs expressed by human mesangial cells and we studied the effects of glycated albumin and of carboxymethyl lysine on matrix protein and remodelling enzyme synthesis. Membrane RAGE expression was confirmed by FACS analysis. Microarray methods, RT-PCR, and Northern blot analysis were used to detect and confirm specific gene induction. Zymographic analysis and ELISA were used to measure the induction of tPA and PAI-1. We show herein that cultured human mesangial cells express AGE receptor type 1, type 2 and type 3 and RAGE. AGEs (200 microg/ml) induced at least a 2-fold increase in mRNA for 10 genes involved in ECM remodelling, including tPA, PAI-1 and TIMP-3. The increase in tPA synthesis was confirmed by fibrin zymography. The stimulation of PAI-1 synthesis was confirmed by ELISA. AGEs increased PAI-1 mRNA through a signalling pathway involving reactive oxygen species, the MAP kinases ERK-1/ERK-2 and the nuclear transcription factor NF-kappaB, but not AP-1. Carboxymethyl lysine (CML, 5 microM), which is a RAGE ligand, also stimulated PAI-1 synthesis by mesangial cells. In addition, a blocking anti-RAGE antibody partially inhibited the AGE-stimulated gene expression and decreased the PAI-1 accumulation induced by AGEs and by CML. Inhibition of AGE receptors or neutralization of the protease inhibitors TIMP-3 and PAI-1 could represent an important new therapeutic strategy for diabetic nephropathy.
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Affiliation(s)
- J Berrou
- INSERM U702, Hôpital Tenon AP-HP, Paris, France
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Vija L, Farge D, Gautier JF, Vexiau P, Dumitrache C, Bourgarit A, Verrecchia F, Larghero J. Mesenchymal stem cells: Stem cell therapy perspectives for type 1 diabetes. Diabetes Metab 2009; 35:85-93. [PMID: 19230736 DOI: 10.1016/j.diabet.2008.10.003] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Revised: 10/06/2008] [Accepted: 10/07/2008] [Indexed: 12/13/2022]
Abstract
Mesenchymal stem cells (MSCs) are multipotent non-haematopoietic progenitor cells that are being explored as a promising new treatment for tissue regeneration. Although their immunomodulatory properties are not yet completely understood, their low immunogenic potential together with their effects on immune response make them a promising therapeutic tool for severe refractory autoimmune diseases. Type 1 diabetes is characterized by T cell-mediated autoimmune destruction of pancreatic beta cells. While insulin replacement represents the current therapy for type 1 diabetes, its metabolic control remains difficult, as exogenous insulin cannot exactly mimic the physiology of insulin secretion. Pancreatic or islet transplantation can provide exogenous insulin independence, but is limited by its intrinsic complications and the scarcity of organ donors. In this context, stem cell therapy, based on the generation of insulin-producing cells (IPCs) derived from MSCs, represents an attractive possibility. In this review, we provide a brief characterization of MSC immunomodulatory effects, and present the current experimental evidence for the potential therapeutic efficacy of MSC transplantation in diabetes.
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Affiliation(s)
- L Vija
- Inserm U697, Paris, France
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Prost F, Verrecchia F, Marchal-Somme J, Piednoir P, Dehoux M, Soler P, Crestani B. Le pasireotide (SOM230) inhibe la synthèse de collagène 1 par les fibroblastes pulmonaires humains in vitro. Rev Mal Respir 2008. [DOI: 10.1016/s0761-8425(08)75041-1] [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: 10/21/2022]
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Larghero J, Verrecchia F, Keshtmand H, Florea L, Tyndall C, Farge D. Caractérisation phénotypique et fonctionnelle des cellules souches mésenchymateuses humaines au cours de la sclérodermie systémique (SSc). Rev Med Interne 2007. [DOI: 10.1016/j.revmed.2007.03.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Larghero J, Farge D, Braccini A, Lecourt S, Scherberich A, Foïs E, Verrecchia F, Daikeler T, Gluckman E, Tyndall A, Bocelli-Tyndall C. Phenotypical and functional characteristics of in vitro expanded bone marrow mesenchymal stem cells from patients with systemic sclerosis. Ann Rheum Dis 2007; 67:443-9. [PMID: 17526552 DOI: 10.1136/ard.2007.071233] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) have a potential immunomodulatory role in autoimmune disease; however, the qualitative properties and haematopoietic support capacity of MSCs derived from patients with autoimmune disease is unclear. OBJECTIVES To further characterise phenotypically and functionally bone marrow (BM)-derived MSCs from patients with systemic sclerosis (SSc). METHODS Key parameters of BM-derived MSC function and phenotype were assessed in 12 patients with SSc and compared with 13 healthy normal controls. The parameters included the ability to: form colony-forming unit fibroblasts (CFU-F), differentiate along the adipogenic and osteogenic lineages, express cell surface antigens defining the MSCs population, support normal haematopoiesis and suppress in vitro lymphocyte proliferation induced by either anti-CD3epsilon plus anti-CD28 monoclonal antibodies or the mixed lymphocyte reaction. RESULTS SSc MSCs were shown to have a similar characteristic phenotype, capacities to form CFU-F and to differentiate along adipogenic and osteogenic lineages as those of healthy donor MSCs. The ability of SSc MSCs to support long-term haematopoiesis was also identical to that of controls. Both healthy donor and SSc BM MSCs reduced the proliferation of autologous and allogeneic peripheral blood mononuclear cells in a cell number dependent fashion. CONCLUSIONS These results show that BM-derived MSCs from patients with SSc under the described culture conditions exhibit the same phenotypic, proliferative, differentiation potential and immunosuppressive properties as their healthy counterparts and could therefore be considered in an autologous setting. Further studies are needed to ensure the quality and safety of large-scale expansion of patient MSCs prior to their potential use in clinical trials.
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Affiliation(s)
- J Larghero
- Cell Therapy Unit, Assistance Publique-Hôpitaux de Paris, Saint-Louis Hospital, Paris, France
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Verrecchia F, Laboureau J, Verola O, Roos N, Porcher R, Bruneval P, Ertault M, Tiev K, Michel L, Mauviel A, Farge D. Skin involvement in scleroderma--where histological and clinical scores meet. Rheumatology (Oxford) 2007; 46:833-41. [PMID: 17255134 DOI: 10.1093/rheumatology/kel451] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES A clinico-pathological study in diffuse systemic sclerosis (SSc) patients was performed to analyse whether the skin histological organization and the pro-fibrotic signals elicited by TGF-beta in fibroblasts vary according to the modified Rodnan skin score (mRSS). METHODS Twenty-seven SSc patients underwent 45 skin biopsies with simultaneous measure of mRSS before or after treatment by immunosuppressive drugs, with or without autologous peripheral haematopoietic stem cell transplantation (HSCT). RESULTS Double-blind optic microscopy analysis of the biopsies standard extracellular matrix stains allowed to define three histological subgroups: 6 with grade 1 weak fibrosis, 30 with grade 2 moderate fibrosis and 9 with grade 3 severe fibrosis. A significant (P < 0.0001) was identified between the grades of fibrosis and the mRSS. In skin fibroblast cultures, Smad3 phosphorylation levels, as well as mRNA steady-state levels of two transforming growth factor (TGF)-beta/Smad3 targets, COL1A2 and PAI-1, increased in parallel with the mRSS. When compared with pre-transplant values the degree of fibrosis observed after HSCT in the papillary and in the reticular dermis decreased in parallel with the fall in mRSS (n = 5 consecutive patients with repeated biopsies). CONCLUSIONS The histological extent of skin fibrosis correlates closely with the mRSS. Both parameters appeared to regress after HSCT. The extent of TGF-beta signalling activation in SSc skin fibroblasts appears to parallel the severity of disease.
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Verrecchia F, Poulalhon N, Roos N, Mauviel A, Farge D. Action antifibrosante de la rapamycine et du mycophenolate mofetyl sur des fibroblastes humains normaux. Rev Med Interne 2006. [DOI: 10.1016/j.revmed.2006.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Scoazec JY, Verrecchia F, Jacob MP, Bruneval P. [Cellular and molecular mechanisms of fibrosis]. Ann Pathol 2006; 26 Spec No 1:1S43-50. [PMID: 17149174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Affiliation(s)
- J-Y Scoazec
- Service Central d'Anatomie et de Cytologie Pathologiques, Hôpital Edouard Herriot, Lyon, France
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Dennler S, Laboureau J, Farge D, Mauviel A, Verrecchia F. Implication du TGFβ1 dans les processus fibrotiques : rôle de ses effecteurs, les protéines Smad. Rev Med Interne 2006; 27:46-9. [PMID: 16330131 DOI: 10.1016/j.revmed.2005.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 07/13/2005] [Accepted: 10/03/2005] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Transforming Growth Factor beta 1 (TGFbeta1) is a key cytokine in the development of fibrotic diseases which are characterized by a pathological excess of extracellular matrix involving multiple organs. EXEGESIS To induce its biological effects, TGFbeta1 interacts with Ser/Thr kinase receptor complexes. The polypeptide binding to the receptors induces TGFbeta intracellular mediator phosphorylation and namely Smad proteins. Upon phosphorylation the latter form protein complexes which are then translocated to the nucleus where they participate to matrix gene regulation. CONCLUSION We will summarize the literature on the involvement of TGFbeta1 through the Smad proteins in fibrotic diseases.
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Affiliation(s)
- S Dennler
- Inserm U697, institut de recherche sur la peau, pavillon Equerre-Bazin, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France
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Laurent M, Martinerie C, Thibout H, Hoffman MP, Verrecchia F, Le Bouc Y, Mauviel A, Kleinman HK. NOVH increases MMP3 expression and cell migration in glioblastoma cells via a PDGFR-alpha-dependent mechanism. FASEB J 2003; 17:1919-21. [PMID: 14519668 DOI: 10.1096/fj.02-1023fje] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Nephroblastoma overexpressed gene (NOV) is highly expressed in the nervous system. We investigated its biological activity by expressing the human NOV gene (NOVH) in a human glioblastoma cell line that is negative for NOVH and by analyzing four clones with different levels of NOVH expression. There was no difference in cell proliferation between the NOVH-expressing cell lines, but there was increased cell adhesion and migration that correlated with increasing NOVH expression. Gene expression profiling was used to investigate the mechanisms by which NOVH expression regulated cell activity. We identified two induced genes in NOVH-expressing cells that are involved in cell migration: matrix metalloprotease (MMP)3 and platelet-derived growth factor receptor (PDGFR)-alpha. Our studies show that PDGFR-alpha induced MMP3 gene expression and increased cell proliferation and cell migration upon stimulation by platelet-derived growth factor (PDGF)-AA. We also show that the induction of MMP3 in cells expressing NOVH is potentiated by either cell density, serum, or PDGF-BB. Thus, expression of NOVH in glioblastoma cells triggers a cascade of gene expression resulting in increased cell adhesion and migration.
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Affiliation(s)
- M Laurent
- NSERM U515, Prolifération, Différenciation et Processus tumoraux bâtiment Kourilsky, Hôpital Saint-Antoine, 184 rue du Fbg St-Antoine, 75012 Paris, France.
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Verrecchia F, Rossert J, Mauviel A. Blocking sp1 transcription factor broadly inhibits extracellular matrix gene expression in vitro and in vivo: implications for the treatment of tissue fibrosis. J Invest Dermatol 2001; 116:755-63. [PMID: 11348466 DOI: 10.1046/j.1523-1747.2001.01326.x] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.5] [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: 01/29/2023]
Abstract
Fibrosis is a consequence of injury characterized by accumulation of excess collagen and other extracellular matrix components, resulting in the destruction of normal tissue architecture and loss of function. Sp1 was originally described as a ubiquitous transcription factor. It is involved in the basal expression of extracellular matrix genes and may, therefore, be important in fibrotic processes. To evaluate the effect of Sp1 blockade on the expression of extracellular matrix genes, clones of NIH 3T3 fibroblasts stably transfected with an anti-sense Sp1 expression vector. Simultaneously reduced expression of several extracellular matrix genes as compared with mock-transfected clones was noted using differential hybridization of cDNA microarrays, without significant alteration in cell growth. Transfection of human dermal fibroblasts with several extracellular matrix gene (COL1A1, COL1A2, COL3A1, COL5A2, COL7A1, TIMP-1, and decorin) promoter/reporter constructs demonstrated that anti-sense Sp1-induced reduction of extracellular matrix gene mRNA steady-state levels results from transcriptional repression, consistent with the role of Sp1 as a transcription factor. Decoy Sp1 binding oligonucleotides inhibited COL1A2 promoter activity both in cultured fibroblasts and in vivo, in the skin of transgenic mice, which have integrated a mouse COL1A2 promoter/luciferase reporter gene construct. These results indicate that targeting Sp1 efficiently blocks extracellular matrix gene expression, and suggest that such an approach may represent an interesting therapeutic alternative toward the treatment of fibrotic disorders.
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Affiliation(s)
- F Verrecchia
- INSERM U532, Hopital Saint-Louis, Paris, France; INSERM U489, Hôpital Tenon, Paris, France
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35
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Verrecchia F, Vindevoghel L, Lechleider RJ, Uitto J, Roberts AB, Mauviel A. Smad3/AP-1 interactions control transcriptional responses to TGF-beta in a promoter-specific manner. Oncogene 2001; 20:3332-40. [PMID: 11423983 DOI: 10.1038/sj.onc.1204448] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.7] [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: 01/17/2001] [Revised: 03/01/2001] [Accepted: 03/07/2001] [Indexed: 12/16/2022]
Abstract
Smad proteins transduce signals from TGF-beta receptors and regulate transcription of target genes either directly or in combination with other sequence-specific transcription factors. AP-1 sites and their cognate transcription factors also play important roles in the gene regulatory activities of TGF-beta. In this report, we have investigated the functional interactions of the Smad and AP-1 transcription factors. We demonstrate that Smad and AP-1 complexes specifically bind to their cognate cis-elements and do not interact with each other on-DNA, whereas off-DNA interactions occur between Smad3 and both c-Jun and JunB. Using both artificial constructs specific for either the Smad or AP-1 signaling pathways or natural promoters known to be TGF-beta-responsive, we have determined that Jun family members downregulate Smad3-mediated gene transactivation whereas AP-1-dependent promoters are synergistically activated by Smad3 and Jun proteins. We propose a model where the presence of Smad- and/or AP-1-specific cis-elements within TGF-beta-responsive genes allows dynamic modulation of gene expression, in contrast to the existing model where interactions between Smad and AP-1 proteins are merely an on/off mechanism to regulate TGF-beta/Smad targets.
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Affiliation(s)
- F Verrecchia
- INSERM, U532, Hôpital Saint-Louis, 75010 Paris, France
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Verrecchia F, Chu ML, Mauviel A. Identification of novel TGF-beta /Smad gene targets in dermal fibroblasts using a combined cDNA microarray/promoter transactivation approach. J Biol Chem 2001; 276:17058-62. [PMID: 11279127 DOI: 10.1074/jbc.m100754200] [Citation(s) in RCA: 513] [Impact Index Per Article: 22.3] [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] [Indexed: 12/17/2022] Open
Abstract
Despite major advances in the understanding of the intimate mechanisms of transforming growth factor-beta (TGF-beta) signaling through the Smad pathway, little progress has been made in the identification of direct target genes. In this report, using cDNA microarrays, we have focussed our attention on the characterization of extracellular matrix-related genes rapidly induced by TGF-beta in human dermal fibroblasts and attempted to identify the ones whose up-regulation by TGF-beta is Smad-mediated. For a gene to qualify as a direct Smad target, we postulated that it had to meet the following criteria: (1) rapid (30 min) and significant (at least 2-fold) elevation of steady-state mRNA levels upon TGF-beta stimulation, (2) activation of the promoter by both exogenous TGF-beta and co-transfected Smad3 expression vector, (3) up-regulation of promoter activity by TGF-beta blocked by both dominant-negative Smad3 and inhibitory Smad7 expression vectors, and (4) promoter transactivation by TGF-beta not possible in Smad3(-/-) mouse embryo fibroblasts. Using this stringent approach, we have identified COL1A2, COL3A1, COL6A1, COL6A3, and tissue inhibitor of metalloproteases-1 as definite TGF-beta/Smad3 targets. Extrapolation of this approach to other extracellular matrix-related gene promoters also identified COL1A1 and COL5A2, but not COL6A2, as novel Smad targets. Together, these results represent a significant step toward the identification of novel, early-induced Smad-dependent TGF-beta target genes in fibroblasts.
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Affiliation(s)
- F Verrecchia
- INSERM U532, Hôpital Saint-Louis, 75475 Paris, France
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37
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Affiliation(s)
- J Délèze
- Laboratoire de Physiologie Cellulaire, Université de Poitiers, Poitiers, France
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Verrecchia F, Tacheau C, Schorpp-Kistner M, Angel P, Mauviel A. Induction of the AP-1 members c-Jun and JunB by TGF-beta/Smad suppresses early Smad-driven gene activation. Oncogene 2001; 20:2205-11. [PMID: 11402315 DOI: 10.1038/sj.onc.1204347] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.4] [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: 01/04/2001] [Revised: 01/25/2001] [Accepted: 02/05/2001] [Indexed: 01/16/2023]
Abstract
Smad proteins transduce signals from TGF-beta receptors and regulate transcription of target genes. Among the latter are c-jun and junB, which encode members of the AP-1 family of transcription factors. In this study, we have investigated the functional interactions of the Smad and AP-1 transcription factors in the context of Smad-specific gene transactivation in both fibroblasts and keratinocytes. We demonstrate that overexpression of either junB or c-jun prevents TGF-beta- or Smad3-induced transactivation of the Smad-specific promoter construct (SBE)(4)-Lux. Inversely, Smad-driven promoter transactivation by TGF-beta/Smad is significantly enhanced when c-jun expression is abolished in HaCaT keratinocytes, and when junB expression is prevented in fibroblasts, consistent with the cell-type specific induction of jun members by TGF-beta. We also demonstrate that Smad-specific gene transactivation in junB(-/-) mouse embryonic fibroblasts is significantly higher than in embryonic fibroblasts from the control parental mouse line, and that this difference is abolished by rescuing junB expression in junB(-/-) cells. Finally, we have determined that off-DNA interactions between Smad3 and both c-Jun and JunB result in the reduction of Smad3/DNA interactions. From these results, we provide a model in which jun expression in response to the initial Smad cascade represents a negative feed-back mechanism counteracting Smad-driven gene transactivation.
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Affiliation(s)
- F Verrecchia
- INSERM U532, Hôpital Saint-Louis, F-75010 Paris, France
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Gras MP, Verrecchia F, Uitto J, Mauviel A. Downregulation of human type VII collagen (COL7A1) promoter activity by dexamethasone. Identification of a glucocorticoid receptor binding region. Exp Dermatol 2001; 10:28-34. [PMID: 11168577 DOI: 10.1034/j.1600-0625.2001.100104.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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] [Indexed: 11/23/2022]
Abstract
Type VII collagen is the major collagenous component of the anchoring fibrils, attachment structures that stabilize the association of the cutaneous basement membrane zone to the underlying dermis. It is expressed by both epidermal keratinocytes and dermal fibroblasts. In this study, we have examined the pharmacological control of COL7A1 gene expression by the glucocorticorticoid dexamethasone. We demonstrate that dexamethasone is a potent transcriptional inhibitor of COL7A1 promoter activity in dermal fibroblasts, and we identify a potential glucocorticoid response element in the region -318/-212 of the promoter. In addition, we have determined that dexamethasone antagonizes transforming growth factor-beta (TGF-beta) activation of the COL7A1 promoter. This effect occurred without dexamethasone interfering with TGF-beta-induced Smad-specific gene transcription. These results indicate potential deleterious effects of glucocorticosteroids on epidermal wound healing, as reduced COL7A1 expression likely leads to decreased anchoring fibril formation, which may translate into delayed or impaired reepithelialization.
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Affiliation(s)
- M P Gras
- INSERM U532, H pital Saint-Louis, Paris, France
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40
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Duthe F, Dupont E, Verrecchia F, Plaisance I, Severs NJ, Sarrouilhe D, Hervé JC. Dephosphorylation agents depress gap junctional communication between rat cardiac cells without modifying the Connexin43 phosphorylation degree. Gen Physiol Biophys 2000; 19:441-9. [PMID: 11409846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
The functional state of gap junctional channels and the phosphorylation status of Connexine43 (Cx43), the major gap junctional protein in rat heart, were evaluated in primary cultures of neonatal rat cardiomyocytes. H7, able to inhibit a range of serine/threonine protein kinases, progressively reduced gap junctional conductance to approximately 13% of its initial value within 10 min except when protein phosphatase inhibitors were also present. The dephosphorylating agent 2,3-Butanedione monoxime (BDM) produced both a quick and reversible interruption of cell-to-cell communication as well as a parallel slow inhibition of junctional currents. The introduction of a non-hydrolysable ATP analogue (ATPgammaS) in the cytosol delayed the second component, suggesting that it was the consequence of protein dephosphorylation. Western blot analysis reveals 2 forms of Cx43 with different electrophoretic mobilities which correspond to its known phosphorylated and dephosphorylated forms. After exposure of the cells to H7 (1 mmol/l, 1h) or BDM (15 mmol/l, 15 min), no modification in the level of Cx43 phosphorylation was observed. The lack of direct correlation between the inhibition of cell-to-cell communication and changes in the phosphorylation status of Cx43 suggest that the functional state of junctional channels might rather be determined by regulatory proteins associated to Cx43.
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Affiliation(s)
- F Duthe
- Physiologie Cellulaire, UMR CNRS 6558, Poitiers, France
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Verrecchia F, Pessah M, Atfi A, Mauviel A. Tumor necrosis factor-alpha inhibits transforming growth factor-beta /Smad signaling in human dermal fibroblasts via AP-1 activation. J Biol Chem 2000; 275:30226-31. [PMID: 10903323 DOI: 10.1074/jbc.m005310200] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.9] [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: 01/04/2023] Open
Abstract
Understanding the molecular mechanisms underlying the antagonistic activities of tumor necrosis factor-alpha (TNF-alpha) against transforming growth factor-beta (TGF-beta) is of utmost importance given the physiopathological implications of these cytokines. In this report, we demonstrate that TNF-alpha prevents TGF-beta-induced Smad-specific gene transactivation without inducing detectable levels of inhibitory Smad7 in human dermal fibroblasts. On the other hand, c-Jun and JunB, both induced by TNF-alpha, block Smad3-mediated transcription. Expression of antisense c-Jun mRNA prevents TNF-alpha inhibition of TGF-beta/Smad signaling whereas that of dominant-negative Ikappa-B kinase-alpha or antisense Smad7 does not. We provide evidence for off-DNA interactions between Smad3 and both c-Jun and JunB accompanied with reduced Smad3-DNA interactions. Finally, we show that overexpression of the transcriptional co-activator p300 prevents TNF-alpha/AP-1 inhibition of TGF-beta/Smad signaling. These data suggest that TNF-alpha interferes with Smad signaling through the induction of AP-1 components, the latter forming off-DNA complexes with Smad3 and preventing its binding to specific cis-element(s). In addition, Jun members compete with Smad3 for the common transcription co-activator p300. These two mechanisms are likely to act in concert to decrease Smad-specific transcription.
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Affiliation(s)
- F Verrecchia
- INSERM U532, Hôpital Saint-Louis, 75010 Paris and INSERM U482, Hôpital Saint-Antoine, 75012 Paris, France
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Verrecchia F, Duthe F, Duval S, Duchatelle I, Sarrouilhe D, Herve JC. ATP counteracts the rundown of gap junctional channels of rat ventricular myocytes by promoting protein phosphorylation. J Physiol 1999; 516 ( Pt 2):447-59. [PMID: 10087344 PMCID: PMC2269282 DOI: 10.1111/j.1469-7793.1999.0447v.x] [Citation(s) in RCA: 37] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
1. The degree of cell-to-cell coupling between ventricular myocytes of neonatal rats appeared well preserved when studied in the perforated version of the patch clamp technique or, in double whole-cell conditions, when ATP was present in the patch pipette solution. In contrast, when ATP was omitted, the amplitude of junctional current rapidly declined (rundown). 2. To examine the mechanism(s) of ATP action, an 'internal perfusion technique' was adapted to dual patch clamp conditions, and reintroduction of ATP partially reversed the rundown of junctional channels. 3. Cell-to-cell communication was not preserved by a non-hydrolysable ATP analogue (5'-adenylimidodiphosphate, AMP-PNP), indicating that the effect most probably did not involve direct interaction of ATP with the channel-forming proteins. 4. An ATP analogue supporting protein phosphorylation but not active transport processes (adenosine 5'-O-(3-thiotriphosphate), ATPgammaS) maintained normal intercellular communication, suggesting that the effect was due to kinase activity rather than to altered intracellular Ca2+. 5. A broad spectrum inhibitor of endogenous serine/threonine protein kinases (H7) reversibly reduced the intercellular coupling. A non-specific exogenous protein phosphatase (alkaline phosphatase) mimicked the effects of ATP deprivation. The non-specific inhibition of endogenous protein phosphatases resulted in the preservation of substantial cell-to-cell communication in ATP-free conditions. 6. The activity of gap junctional channels appears to require both the presence of ATP and protein kinase activity to counteract the tonic activity of endogenous phosphatase(s).
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Affiliation(s)
- F Verrecchia
- Physiologie Cellulaire, UMR CNRS 6558, Universite de Poitiers, 40 Avenue du R. Pineau, 86022 Poitiers, France
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Verrecchia F, Hervé JC. Reversible inhibition of gap junctional communication elicited by several classes of lipophilic compounds in cultured rat cardiomyocytes. Can J Cardiol 1997; 13:1093-100. [PMID: 9413243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Electrical coupling between cardiac muscle cells is mediated by specialized sites of plasma membrane termed 'gap junctions', which consist of clusters of transmembrane channels that directly link the cytoplasmic compartments of neighbouring cells and allow direct transfer of small ions and molecules. These structures provide low resistance electrical pathways between cardiac cells, necessary for rapid impulse propagation and, thus, coordinate contraction of the myocardium. OBJECTIVE To investigate the effects of derivatives of sex steroid hormones and of some of their antagonists on junctional communication in pairs of cultured ventricular myocytes of neonatal rats. MAIN RESULTS Short term (15 min) exposures to some of these lipophilic compounds led, in a concentration range 1 to 22 microM, to a reversible inhibition of cell to cell communication. None of these uncoupling treatments altered the cytosolic calcium concentration, examined by means of a fluorescence indicator. The uncoupling effect of sex hormones persisted in the presence of blockers of their respective nuclear receptors (eg, cyproterone acetate for testosterone and tamoxifen for 17-beta-estradiol). Some of these blockers (tamoxifen, clomiphene) were able to impair gap junctional communication, whereas others (nafoxidine and cyproterone acetate) had no effect. None of protein kinase C, cAMP-dependent protein kinase and protein tyrosine kinase pathways seemed to be involved in these effects. CONCLUSIONS Several lipophilic compounds able to hinder cell to cell communication have also been seen to affect voltage-activated or ligand-activated ionic channels. Lipophilic molecules with an appropriate molecular skeleton could insert into the membrane, with resulting destabilization and unspecific closure of membrane channels.
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Affiliation(s)
- F Verrecchia
- Laboratoire de Physiologie Cellulaire, Centre National de la Recherche Scientifique No 1869, Poitieres, France
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Abstract
Gap junction channels provide a cell-to-cell conduction pathway for direct exchange of ions and small molecules. The intercellular diffusion of a fluorescent dye, quantified in cardiac myocytes from neonatal rats by monitoring the fluorescence recovery after photobleaching, was found to be interrupted after short-term exposure (15 min) to tamoxifen, an anti-oestrogen drug often used in the treatment of human breast cancer. This diffusional uncoupling was dose dependent, occurred in the concentration range 3-25 microM and reversed after tamoxifen withdrawal. Some possible mechanisms of junctional channel closure have been examined. The cytosolic calcium concentration, examined using the fluorescent indicator Indo-1, did not vary during the short-term action of tamoxifen. A second anti-oestrogen agent (clomiphene) was able to impair gap junctional communication, whereas a third (nafoxidine) had no effect. Protein-kinase-C-inhibitor properties of tamoxifen did not seem to be involved in its uncoupling action. The characteristics of tamoxifen's action (i.e. channel inhibition delay, active concentration range, reversibility, etc.) were very similar to the previously observed effects of several other lipophilic compounds (e. g. 17beta-oestradiol, etc.) on junctional channels, and to recently reported effects of tamoxifen on voltage-gated calcium currents.
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Affiliation(s)
- F Verrecchia
- Laboratoire de Physiologie Cellulaire, Unité de Recherche Associée au CNRS no. 1869, 40, avenue du R. Pineau, F-86022 Poitiers, France
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Abstract
2,3-Butanedione monoxime (BDM), a nucleophilic agent endowed with a "phosphatase-like" activity, is often used as a tool for investigating the effects of changes in phosphorylation level of protein constituents on membrane channel function. BDM produced a rapid, dosc-dependent, and reversible abolition of the cytosolic continuity existing between cells via gap junctional channels. The persistence of this effect when a nonhydrolyzable analogue of ATP [adenosine 5'-O-(3-thiotriphosphate) (ATP(gamma)S)] was introduced in the cytosol suggests that the acute suppressant effect of BDM was not due to dephosphorylation. However, the higher reversibility after BDM withdrawal in presence of ATP(gamma)S could signify that a protein-dephosphorylating activity gradually occurred during the oxime treatment. Junctional uncoupling took place even when the moderate increase in cytosolic Ca2+ concentration induced by BDM was prevented by ryanodine. These results are consistent with the model of dual mechanism of BDM action proposed for some other membrane channels, consisting of a quick channel block and a parallel slow inhibition, plausibly through dephosphorylation.
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Affiliation(s)
- F Verrecchia
- Laboratoire de Physiologie Cellulaire, Unité de Recherche Associée au Centre National de la Recherche Scientifique 1869, Poitiers, France
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Hervé JC, Pluciennik F, Bastide B, Cronier L, Verrecchia F, Malassiné A, Joffre M, Délèze J. Contraceptive gossypol blocks cell-to-cell communication in human and rat cells. Eur J Pharmacol 1996; 313:243-55. [PMID: 8911921 DOI: 10.1016/0014-2999(96)00476-1] [Citation(s) in RCA: 28] [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] [Indexed: 02/03/2023]
Abstract
Gossypol (a polycyclic lipophilic agent naturally present in cottonseed, known as a potent non-steroid antifertility agent and a non-specific enzyme inhibitor) irreversibly impaired the intercellular communication between homologous pairs of various cultured cells, from man or rat, involved (Sertoli or trophoblastic cells) or not involved (ventricular myocytes) in steroidogenesis, in a dose-dependent manner. In serum-free assays, a rapid junctional uncoupling occurred in non-cytotoxic conditions. At 5 microM (approximately twice the peak plasma concentration measured in human patients during chronic administration), gap junctional communication was interrupted within 4 to 10 min, without concomitant rise in the intracellular Ca2+ concentration. The latter importantly increased when gossypol treatment was prolonged (cytotoxic effect). The short term uncoupling effect of gossypol was prevented by serum proteins, but long-lasting treatments (48 h) with moderate concentrations (3 microM) elicited junctional uncoupling and impeded the in vitro differentiation of human trophoblasts.
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Affiliation(s)
- J C Hervé
- Laboratories de Physiologie Cellulaire et de Physiologie Animale, Unité de Recherche Associée au CNRS No. 1869, Poitiers, France
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Pluciennik F, Verrecchia F, Bastide B, Hervé JC, Joffre M, Délèze J. Reversible interruption of gap junctional communication by testosterone propionate in cultured Sertoli cells and cardiac myocytes. J Membr Biol 1996; 149:169-77. [PMID: 8801349 DOI: 10.1007/s002329900017] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A direct cell-to-cell exchange of ions and molecules occurs through specialized membrane channels built by the interaction of two half channels, termed connexons, contributed by each of the two adjacent cells. The electrical and diffusional couplings have been investigated by monitoring respectively the cell-to-cell conductance and the fluorescence recovery after photobleaching, in Sertoli and cardiac cells of young rat. In both cell types, a rapid impairment of the intercellular coupling has been observed in the presence of testosterone propionate. This interruption of the cell-to-cell communication through gap junction channels was dose-dependent, observed in the concentration range 1 to 25 microM and was progressively reversed after withdrawing the testosterone ester. Pretreatment with cyproterone acetate, an antiandrogen which blocks the nuclear testosterone receptor by binding, did not prevent the uncoupling action of the androgen ester. This observation, together with the rapid time course of the uncoupling and recoupling, and the rather high effective concentration (micromolar) of the steroid compound, suggests a nongenomic mechanism of action. The uncoupling concentrations were very similar to those of other steroid compounds known to interrupt gap junctional communication. The uncoupling could result from a direct interaction of the steroid with the proteolipidic structure of the membrane, that might alter the conformation of the gap junction channels and their functional state.
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Affiliation(s)
- F Pluciennik
- Laboratoires de Physiologie Cellulaire et de Physiologie Animale, Unité de Recherche Associée au CNRS, Poitiers, France
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Hervé JC, Pluciennik F, Verrecchia F, Bastide B, Delage B, Joffre M, Délèze J. Influence of the molecular structure of steroids on their ability to interrupt gap junctional communication. J Membr Biol 1996; 149:179-87. [PMID: 8801350 DOI: 10.1007/s002329900018] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
17 beta-estradiol propionate was found to reduce the gap junctional communication in a concentration range similar to that of testosterone propionate, in primary cultures of rat Sertoli cells and cardiac myocytes. Uncoupling was reversible on washing out and occurred without concomitant rise in the intracellular calcium concentration. Esterification was prerequisite for the activity of extracellularly applied steroid compounds (for example, testosterone was ineffective even at external concentrations up to 100 microM, whereas its intracellular application at 1 microM totally interrupted intercellular communication), but their uncoupling efficiency did not depend on the nature of the ester chain nor on its position on the steroid nucleus. The derivatives of two other androgen hormones (derivatives of the androstane nucleus) were also efficient as junctional uncouplers. Among five steroid molecules belonging to the pregnane family, only one (pregnanediol diacetate) interrupted the junctional communication. Neither cholic acid nor cholesteryl acetate or ouabain showed this effect. Altogether, no correlation with the presence or position of double bonds nor with the trans- or cis-fusion of the A and B rings could be recognized. These results suggest that this reversible, nondeleterious uncoupling effect of steroids is independent of the shape of the molecules and is more probably related to their size and liposolubility, that condition their insertion into the lipid bilayer. Their incorporation into the membrane could disturb the activity of the membrane proteins by a physical mechanism.
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Affiliation(s)
- J C Hervé
- Laboratoires de Physiologie Cellulaire et de Physiologie Animale, Unité de Recherche Associée au CNRS, Poitiers, France
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