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Manco M, Ammirata G, Petrillo S, De Giorgio F, Fontana S, Riganti C, Provero P, Fagoonee S, Altruda F, Tolosano E. FLVCR1a Controls Cellular Cholesterol Levels through the Regulation of Heme Biosynthesis and Tricarboxylic Acid Cycle Flux in Endothelial Cells. Biomolecules 2024; 14:149. [PMID: 38397386 PMCID: PMC10887198 DOI: 10.3390/biom14020149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/25/2024] Open
Abstract
Feline leukemia virus C receptor 1a (FLVCR1a), initially identified as a retroviral receptor and localized on the plasma membrane, has emerged as a crucial regulator of heme homeostasis. Functioning as a positive regulator of δ-aminolevulinic acid synthase 1 (ALAS1), the rate-limiting enzyme in the heme biosynthetic pathway, FLVCR1a influences TCA cycle cataplerosis, thus impacting TCA flux and interconnected metabolic pathways. This study reveals an unexplored link between FLVCR1a, heme synthesis, and cholesterol production in endothelial cells. Using cellular models with manipulated FLVCR1a expression and inducible endothelial-specific Flvcr1a-null mice, we demonstrate that FLVCR1a-mediated control of heme synthesis regulates citrate availability for cholesterol synthesis, thereby influencing cellular cholesterol levels. Moreover, alterations in FLVCR1a expression affect membrane cholesterol content and fluidity, supporting a role for FLVCR1a in the intricate regulation of processes crucial for vascular development and endothelial function. Our results underscore FLVCR1a as a positive regulator of heme synthesis, emphasizing its integration with metabolic pathways involved in cellular energy metabolism. Furthermore, this study suggests that the dysregulation of heme metabolism may have implications for modulating lipid metabolism. We discuss these findings in the context of FLVCR1a's potential heme-independent function as a choline importer, introducing additional complexity to the interplay between heme and lipid metabolism.
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Affiliation(s)
- Marta Manco
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, VIB, 3000 Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology, Department of Oncology, KU Leuven, 3000 Leuven, Belgium
| | - Giorgia Ammirata
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Sara Petrillo
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Francesco De Giorgio
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Simona Fontana
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Oncology, University of Torino, Via Santena 5/bis, 10126 Torino, Italy
| | - Chiara Riganti
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Oncology, University of Torino, Via Santena 5/bis, 10126 Torino, Italy
| | - Paolo Provero
- Department of Neurosciences “Rita Levi Montalcini”, University of Torino, Corso Massimo D’Azeglio 52, 10126 Torino, Italy;
- Center for Omics Sciences, Ospedale San Raffaele IRCCS, Via Olgettina 60, 20132 Milan, Italy
| | - Sharmila Fagoonee
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Center “Guido Tarone”, 10126 Torino, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Emanuela Tolosano
- Molecular Biotechnology Center “Guido Tarone”, Via Nizza 52, 10126 Torino, Italy; (M.M.); (G.A.); (S.P.); (F.D.G.); (S.F.); (C.R.); (S.F.); (F.A.)
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
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2
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Panella R, Petri A, Desai BN, Fagoonee S, Cotton CA, Nguyen PK, Lundin EM, Wagshal A, Wang DZ, Näär AM, Vlachos IS, Maratos-Flier E, Altruda F, Kauppinen S, Paolo Pandolfi P. MicroRNA-22 Is a Key Regulator of Lipid and Metabolic Homeostasis. Int J Mol Sci 2023; 24:12870. [PMID: 37629051 PMCID: PMC10454516 DOI: 10.3390/ijms241612870] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Obesity is a growing public health problem associated with increased risk of type 2 diabetes, cardiovascular disease, nonalcoholic fatty liver disease (NAFLD) and cancer. Here, we identify microRNA-22 (miR-22) as an essential rheostat involved in the control of lipid and energy homeostasis as well as the onset and maintenance of obesity. We demonstrate through knockout and transgenic mouse models that miR-22 loss-of-function protects against obesity and hepatic steatosis, while its overexpression promotes both phenotypes even when mice are fed a regular chow diet. Mechanistically, we show that miR-22 controls multiple pathways related to lipid biogenesis and differentiation. Importantly, genetic ablation of miR-22 favors metabolic rewiring towards higher energy expenditure and browning of white adipose tissue, suggesting that modulation of miR-22 could represent a viable therapeutic strategy for treatment of obesity and other metabolic disorders.
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Affiliation(s)
- Riccardo Panella
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA; (R.P.)
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, DK-2450 Copenhagen SV, Denmark
| | - Andreas Petri
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, DK-2450 Copenhagen SV, Denmark
| | - Bhavna N. Desai
- Division of Endocrinology and Metabolism, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Center for Life Sciences, Boston, MA 02215, USA
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging (CNR) c/o Molecular Biotechnology Center, 10126 Turin, Italy
| | - Cody A. Cotton
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA; (R.P.)
| | - Piercen K. Nguyen
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA; (R.P.)
| | - Eric M. Lundin
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA; (R.P.)
| | - Alexandre Wagshal
- Massachusetts General Hospital Cancer Center, Department of Cell Biology, Harvard Medical School, Boston, MA 02215, USA
| | - Da-Zhi Wang
- Boston Children’s Hospital, Boston, MA 02215, USA
| | - Anders M. Näär
- Massachusetts General Hospital Cancer Center, Department of Cell Biology, Harvard Medical School, Boston, MA 02215, USA
| | - Ioannis S. Vlachos
- Cancer Research Institute, Harvard Medical School Initiative for RNA Medicine, Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Eleftheria Maratos-Flier
- Division of Endocrinology and Metabolism, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Center for Life Sciences, Boston, MA 02215, USA
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
| | - Sakari Kauppinen
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, DK-2450 Copenhagen SV, Denmark
| | - Pier Paolo Pandolfi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
- Renown Institute for Cancer, Nevada System of Higher Education, Reno, NV 89502, USA
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3
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Petrillo S, De Giorgio F, Bertino F, Garello F, Bitonto V, Longo DL, Mercurio S, Ammirata G, Allocco AL, Fiorito V, Chiabrando D, Altruda F, Terreno E, Provero P, Munaron L, Genova T, Nóvoa A, Carlos AR, Cardoso S, Mallo M, Soares MP, Tolosano E. Endothelial cells require functional FLVCR1a during developmental and adult angiogenesis. Angiogenesis 2023; 26:365-384. [PMID: 36631598 PMCID: PMC10328904 DOI: 10.1007/s10456-023-09865-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/06/2023] [Indexed: 01/13/2023]
Abstract
The Feline Leukemia Virus Subgroup C Receptor 1a (FLVCR1a) is a transmembrane heme exporter essential for embryonic vascular development. However, the exact role of FLVCR1a during blood vessel development remains largely undefined. Here, we show that FLVCR1a is highly expressed in angiogenic endothelial cells (ECs) compared to quiescent ECs. Consistently, ECs lacking FLVCR1a give rise to structurally and functionally abnormal vascular networks in multiple models of developmental and pathologic angiogenesis. Firstly, zebrafish embryos without FLVCR1a displayed defective intersegmental vessels formation. Furthermore, endothelial-specific Flvcr1a targeting in mice led to a reduced radial expansion of the retinal vasculature associated to decreased EC proliferation. Moreover, Flvcr1a null retinas showed defective vascular organization and loose attachment of pericytes. Finally, adult neo-angiogenesis is severely affected in murine models of tumor angiogenesis. Tumor blood vessels lacking Flvcr1a were disorganized and dysfunctional. Collectively, our results demonstrate the critical role of FLVCR1a as a regulator of developmental and pathological angiogenesis identifying FLVCR1a as a potential therapeutic target in human diseases characterized by aberrant neovascularization.
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Affiliation(s)
- Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy.
| | - F De Giorgio
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - F Bertino
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - F Garello
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - V Bitonto
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - D L Longo
- Institute of Biostructures and Bioimaging (IBB), Italian National Research Council (CNR), Via Nizza, 52, 10126, Turin, Italy
| | - S Mercurio
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - G Ammirata
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - A L Allocco
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - V Fiorito
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - D Chiabrando
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - F Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - E Terreno
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
| | - P Provero
- Department of Molecular Biotechnology and Health Sciences, and GenoBiToUS, Genomics and Bioinformatics Service, University of Torino, Turin, Italy
- Center for Translational Genomics and Bioinformatics, San Raffaele Scientific Institute IRCCS, Milan, Italy
| | - L Munaron
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123, Turin, Italy
| | - T Genova
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123, Turin, Italy
| | - A Nóvoa
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - A R Carlos
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - S Cardoso
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - M Mallo
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - M P Soares
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - E Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center (MBC) "Guido Tarone", University of Torino, Via Nizza, 52, 10126, Turin, Italy
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4
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Arina P, Sorge M, Gallo A, Di Mauro V, Vitale N, Cappello P, Brazzi L, Barandalla-Sobrados M, Cimino J, Ranieri VM, Altruda F, Singer M, Catalucci D, Brancaccio M, Fanelli V. Modulation of LTCC Pathways by a Melusin Mimetic Increases Ventricular Contractility During LPS-Induced Cardiomyopathy. Shock 2022; 57:318-325. [PMID: 35271535 DOI: 10.1097/shk.0000000000001926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM Sepsis-induced cardiomyopathy is commonplace and carries an increased risk of death. Melusin, a cardiac muscle-specific chaperone, exerts cardioprotective function under varied stressful conditions through activation of the AKT pathway. The objective of this study was to determine the role of melusin in the pathogenesis of lipopolysaccharide (LPS)-induced cardiac dysfunction and to explore its signaling pathway for the identification of putative therapeutic targets. METHODS AND RESULTS Prospective, randomized, controlled experimental study in a research laboratory. Melusin overexpressing (MelOV) and wild-type (MelWT) mice were used. MelOV and MelWT mice were injected intraperitoneally with LPS. Cardiac function was assessed using trans-thoracic echocardiography. Myocardial expression of L-type calcium channel (LTCC), phospho-Akt and phospho-Gsk3-b were also measured. In separate experiments, wild-type mice were treated post-LPS challenge with the allosteric Akt inhibitor Arq092 and a mimetic peptide (R7W-MP) targeting the LTCC. The impact of these therapies on protein-protein interactions, cardiac function, and survival was assessed. MelOV mice had limited derangement in cardiac function after LPS challenge. Protection was associated with higher Akt and Gsk3-b phosphorylation and restored LTCC density. Pharmacological inhibition of Akt activity reversed melusin-dependent cardiac protection. Treatment with R7W-MP preserved cardiac function in wild-type mice after LPS challenge and significantly improved survival. CONCLUSIONS This study identifies AKT / Melusin as a key pathway for preserving cardiac function following LPS challenge. The cell-permeable mimetic peptide (R7W-MP) represents a putative therapeutic for sepsis-induced cardiomyopathy.
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Affiliation(s)
- Pietro Arina
- Department of Anesthesia and Critical Care, AOU Città Della Salute e della Scienza di Torino, University of Turin, Turin, Italy
- UCL, Bloomsbury Institute of Intensive Care Medicine, Division of Medicine, University College London, London WC1E 6BT, UK
| | - Matteo Sorge
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Andrea Gallo
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Vittoria Di Mauro
- IRCCS Humanitas Clinical and Research Center, Rozzano, Milan, Italy
- National Research Council (CNR), Institute of Genetic and Biomedical Research (IRGB), UOS Milan, Milan, Italy
| | - Nicoletta Vitale
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Paola Cappello
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
- CeRMS-Lab di Immunologia dei Tumori, University of Turin, Turin, Italy
| | - Luca Brazzi
- Department of Anesthesia and Critical Care, AOU Città Della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Maria Barandalla-Sobrados
- IRCCS Humanitas Clinical and Research Center, Rozzano, Milan, Italy
- National Research Council (CNR), Institute of Genetic and Biomedical Research (IRGB), UOS Milan, Milan, Italy
| | - James Cimino
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - V Marco Ranieri
- Department of Medical Sciences and Surgery, University of Bologna, Bologna, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Mervyn Singer
- UCL, Bloomsbury Institute of Intensive Care Medicine, Division of Medicine, University College London, London WC1E 6BT, UK
| | - Daniele Catalucci
- IRCCS Humanitas Clinical and Research Center, Rozzano, Milan, Italy
- National Research Council (CNR), Institute of Genetic and Biomedical Research (IRGB), UOS Milan, Milan, Italy
| | - Mara Brancaccio
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Vito Fanelli
- Department of Anesthesia and Critical Care, AOU Città Della Salute e della Scienza di Torino, University of Turin, Turin, Italy
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5
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Fagoonee S, Arigoni M, Manco M, Olivero M, Bizzaro F, Magagnotti C, Andolfo A, Miniscalco B, Forni M, Todeschi S, Tolosano E, Bocchietto E, Calogero R, Altruda F. Circulating Extracellular Vesicles Contain Liver-Derived RNA Species as Indicators of Severe Cholestasis-Induced Early Liver Fibrosis in Mice. Antioxid Redox Signal 2022; 36:480-504. [PMID: 34779230 PMCID: PMC8978575 DOI: 10.1089/ars.2021.0023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Aims: Biliary diseases represent around 10% of all chronic liver diseases and affect both adults and children. Currently available biochemical tests detect cholestasis but not early liver fibrosis. Circulating extracellular vesicles (EVs) provide a noninvasive, real-time molecular snapshot of the injured organ. We thus aimed at searching for a panel of EV-based biomarkers for cholestasis-induced early liver fibrosis using mouse models. Results: Progressive and detectable histological evidence of collagen deposition and liver fibrosis was observed from day 8 after bile duct ligation (BDL) in mice. Whole transcriptome and small RNA sequencing analyses of circulating EVs revealed differentially enriched RNA species after BDL versus sham controls. Unsupervised hierarchical clustering identified a signature that allowed for discrimination between BDL and controls. In particular, 151 microRNAs (miRNAs) enriched in BDL-derived EVs were identified, of which 66 were conserved in humans. The liver was an important source of circulating EVs in BDL animals as evidenced by the enrichment of several hepatic mRNAs, such as Albumin and Haptoglobin. Interestingly, among experimentally validated miRNAs, miR192-5p, miR194-5p, miR22-3p, and miR29a-3p showed similar enrichment patterns also in EVs derived from 3,5-diethoxycarboncyl-1,4-dihydrocollidine-treated (drug-induced severe cholestasis) but not in mice with mild phenotype or non-cholestatic liver fibrosis. Innovation: A panel of mRNAs and miRNAs contained in circulating EVs, when combined, indicates hepatic damage and fibrosis in mice and represents promising biomarkers for human severe cholestasis-induced liver fibrosis. Conclusion: Analysis of EV-based miRNAs, in combination with hepatic injury RNA markers, can detect early cholestatic liver injury and fibrosis in mice. Antioxid. Redox Signal. 36, 480-504.
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Affiliation(s)
- Sharmila Fagoonee
- Department of Biological Sciences, Institute of Biostructure and Bioimaging, National Research Council, Molecular Biotechnology Center, Turin, Italy
| | - Maddalena Arigoni
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin, Italy
| | - Marta Manco
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin, Italy
| | | | | | - Cinzia Magagnotti
- ProMeFa, Proteomics and Metabolomics Facility, IRCCS, San Raffaele Scientific Institute, Milan, Italy
| | - Annapaola Andolfo
- ProMeFa, Proteomics and Metabolomics Facility, IRCCS, San Raffaele Scientific Institute, Milan, Italy
| | | | - Marco Forni
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin, Italy
| | | | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin, Italy
| | | | - Raffaele Calogero
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin, Italy
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6
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Allocco AL, Bertino F, Petrillo S, Chiabrando D, Riganti C, Bardelli A, Altruda F, Fiorito V, Tolosano E. Inhibition of Heme Export and/or Heme Synthesis Potentiates Metformin Anti-Proliferative Effect on Cancer Cell Lines. Cancers (Basel) 2022; 14:cancers14051230. [PMID: 35267538 PMCID: PMC8908972 DOI: 10.3390/cancers14051230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/28/2021] [Accepted: 02/24/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Tumor initiation and progression are sustained by the ability of the cancer cell to reshape its metabolism in a way that favors cell proliferation and survival. Recently, it was shown that heme metabolism contributes to metabolic adaptation of tumor cell and that interfering with heme homeostasis reduces tumor cell growth. Here, we show that the alteration of heme metabolism, either by RNA-interference or pharmacological approaches, increases the sensitivity of tumor cell lines to the antitumor agent metformin. These findings strengthen the concept of targeting heme metabolism to counteract tumor progression. Abstract Cancer is one of the leading causes of mortality worldwide. Beyond standard therapeutic options, whose effectiveness is often reduced by drug resistance, repurposing of the antidiabetic drug metformin appears promising. Heme metabolism plays a pivotal role in the control of metabolic adaptations that sustain cancer cell proliferation. Recently, we demonstrated the existence of a functional axis between the heme synthetic enzyme ALAS1 and the heme exporter FLVCR1a exploited by cancer cells to down-modulate oxidative metabolism. In colorectal cancer cell lines, the inhibition of heme synthesis-export system was associated with reduced proliferation and survival. Here, we aim to assess whether the inhibition of the heme synthesis-export system affects the sensitivity of colorectal cancer cells to metformin. Our data demonstrate that the inhibition of this system, either by blocking heme efflux with a FLVCR1a specific shRNA or by inhibiting heme synthesis with 5-aminolevulinic acid, improves metformin anti-proliferative effect on colorectal cancer cell lines. In addition, we demonstrated that the same effect can be obtained in other kinds of cancer cell lines. Our study provides an in vitro proof of concept of the possibility to target heme metabolism in association with metformin to counteract cancer cell growth.
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Affiliation(s)
- Anna Lucia Allocco
- Molecular Biotechnology Center, Department of Biotechnology and Health Sciences, University of Torino, 10126 Torino, TO, Italy; (A.L.A.); (F.B.); (S.P.); (D.C.); (F.A.); (E.T.)
| | - Francesca Bertino
- Molecular Biotechnology Center, Department of Biotechnology and Health Sciences, University of Torino, 10126 Torino, TO, Italy; (A.L.A.); (F.B.); (S.P.); (D.C.); (F.A.); (E.T.)
| | - Sara Petrillo
- Molecular Biotechnology Center, Department of Biotechnology and Health Sciences, University of Torino, 10126 Torino, TO, Italy; (A.L.A.); (F.B.); (S.P.); (D.C.); (F.A.); (E.T.)
| | - Deborah Chiabrando
- Molecular Biotechnology Center, Department of Biotechnology and Health Sciences, University of Torino, 10126 Torino, TO, Italy; (A.L.A.); (F.B.); (S.P.); (D.C.); (F.A.); (E.T.)
| | - Chiara Riganti
- Department of Oncology, University of Torino, 10126 Torino, TO, Italy;
| | - Alberto Bardelli
- Department of Oncology, University of Torino, 10060 Candiolo, TO, Italy;
- Candiolo Cancer Institute, FPO-IRCCS, 10060 Candiolo, TO, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center, Department of Biotechnology and Health Sciences, University of Torino, 10126 Torino, TO, Italy; (A.L.A.); (F.B.); (S.P.); (D.C.); (F.A.); (E.T.)
| | - Veronica Fiorito
- Molecular Biotechnology Center, Department of Biotechnology and Health Sciences, University of Torino, 10126 Torino, TO, Italy; (A.L.A.); (F.B.); (S.P.); (D.C.); (F.A.); (E.T.)
- Correspondence: ; Tel.: +39-011-6706-423
| | - Emanuela Tolosano
- Molecular Biotechnology Center, Department of Biotechnology and Health Sciences, University of Torino, 10126 Torino, TO, Italy; (A.L.A.); (F.B.); (S.P.); (D.C.); (F.A.); (E.T.)
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7
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Petrillo S, Genova T, Chinigò G, Roato I, Scarpellino G, Kopecka J, Altruda F, Tolosano E, Riganti C, Mussano F, Munaron L. Endothelial Cells Promote Osteogenesis by Establishing a Functional and Metabolic Coupling With Human Mesenchymal Stem Cells. Front Physiol 2022; 12:813547. [PMID: 35087424 PMCID: PMC8787057 DOI: 10.3389/fphys.2021.813547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/14/2021] [Indexed: 11/13/2022] Open
Abstract
Bone formation involves a complex crosstalk between endothelial cells (EC) and osteodifferentiating stem cells. This functional interplay is greatly mediated by the paracrine and autocrine action of soluble factors released at the vasculature-bone interface. This study elucidates the molecular and functional responses triggered by this intimate interaction. In this study, we showed that human dermal microvascular endothelial cells (HMEC) induced the expression of pro-angiogenic factors in stem cells from human exfoliated deciduous teeth (SHED) and sustain their osteo-differentiation at the same time. In contrast, osteodifferentiating SHED increased EC recruitment and promoted the formation of complex vascular networks. Moreover, HMEC enhanced anaerobic glycolysis in proliferating SHED without compromising their ability to undergo the oxidative metabolic shift required for adequate osteo-differentiation. Taken together, these findings provide novel insights into the molecular mechanism underlying the synergistic cooperation between EC and stem cells during bone tissue renewal.
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Affiliation(s)
- Sara Petrillo
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Tullio Genova
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Giorgia Chinigò
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Ilaria Roato
- Department of Surgical Sciences, C.I.R. Dental School, University of Turin, Turin, Italy
| | - Giorgia Scarpellino
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Joanna Kopecka
- Department of Oncology, University of Turin, Turin, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Emanuela Tolosano
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Chiara Riganti
- Department of Oncology, University of Turin, Turin, Italy
| | - Federico Mussano
- Department of Surgical Sciences, C.I.R. Dental School, University of Turin, Turin, Italy
| | - Luca Munaron
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
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8
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Abstract
Significance: Liver fibrosis results from different etiologies and represents one of the most serious health issues worldwide. Fibrosis is the outcome of chronic insults on the liver and is associated with several factors, including abnormal iron metabolism. Recent Advances: Multiple mechanisms underlying the profibrogenic role of iron have been proposed. The pivotal role of liver sinusoidal endothelial cells (LSECs) in iron-level regulation, as well as their morphological and molecular dedifferentiation occurring in liver fibrosis, has encouraged research on LSECs as prime regulators of very early fibrotic events. Importantly, normal differentiated LSECs may act as gatekeepers of fibrogenesis by maintaining the quiescence of hepatic stellate cells, while LSECs capillarization precedes the onset of liver fibrosis. Critical Issues: In the present review, the morphological and molecular alterations occurring in LSECs after liver injury are addressed in an attempt to highlight how vascular dysfunction promotes fibrogenesis. In particular, we discuss in depth how a vicious loop can be established in which iron dysregulation and LSEC dedifferentiation synergize to exacerbate and promote the progression of liver fibrosis. Future Directions: LSECs, due to their pivotal role in early liver fibrosis and iron homeostasis, show great promises as a therapeutic target. In particular, new strategies can be devised for restoring LSECs differentiation and thus their role as regulators of iron homeostasis, hence preventing the progression of liver fibrosis or, even better, promoting its regression. Antioxid. Redox Signal. 35, 474-486.
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Affiliation(s)
- Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Marta Manco
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Center, Torino, Italy
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
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9
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Fiorito V, Allocco AL, Petrillo S, Gazzano E, Torretta S, Marchi S, Destefanis F, Pacelli C, Audrito V, Provero P, Medico E, Chiabrando D, Porporato PE, Cancelliere C, Bardelli A, Trusolino L, Capitanio N, Deaglio S, Altruda F, Pinton P, Cardaci S, Riganti C, Tolosano E. The heme synthesis-export system regulates the tricarboxylic acid cycle flux and oxidative phosphorylation. Cell Rep 2021; 35:109252. [PMID: 34133926 DOI: 10.1016/j.celrep.2021.109252] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 12/21/2020] [Accepted: 05/25/2021] [Indexed: 12/14/2022] Open
Abstract
Heme is an iron-containing porphyrin of vital importance for cell energetic metabolism. High rates of heme synthesis are commonly observed in proliferating cells. Moreover, the cell-surface heme exporter feline leukemia virus subgroup C receptor 1a (FLVCR1a) is overexpressed in several tumor types. However, the reasons why heme synthesis and export are enhanced in highly proliferating cells remain unknown. Here, we illustrate a functional axis between heme synthesis and heme export: heme efflux through the plasma membrane sustains heme synthesis, and implementation of the two processes down-modulates the tricarboxylic acid (TCA) cycle flux and oxidative phosphorylation. Conversely, inhibition of heme export reduces heme synthesis and promotes the TCA cycle fueling and flux as well as oxidative phosphorylation. These data indicate that the heme synthesis-export system modulates the TCA cycle and oxidative metabolism and provide a mechanistic basis for the observation that both processes are enhanced in cells with high-energy demand.
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Affiliation(s)
- Veronica Fiorito
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Anna Lucia Allocco
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Sara Petrillo
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Elena Gazzano
- Department of Oncology, University of Torino, Torino, Italy
| | - Simone Torretta
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milano, Italy
| | - Saverio Marchi
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, Ancona, Italy
| | - Francesca Destefanis
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Consiglia Pacelli
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Valentina Audrito
- Immunogenetics Unit, Department of Medical Sciences, University of Torino, Torino, Italy
| | - Paolo Provero
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Omics Sciences, San Raffaele Scientific Institute IRCSS, Milano, Italy
| | - Enzo Medico
- Department of Oncology, University of Torino, Candiolo, TO, Italy; Candiolo Cancer Institute, FPO-IRCCS, Candiolo, TO, Italy
| | - Deborah Chiabrando
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Paolo Ettore Porporato
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | | | - Alberto Bardelli
- Department of Oncology, University of Torino, Candiolo, TO, Italy; Candiolo Cancer Institute, FPO-IRCCS, Candiolo, TO, Italy
| | - Livio Trusolino
- Department of Oncology, University of Torino, Candiolo, TO, Italy; Candiolo Cancer Institute, FPO-IRCCS, Candiolo, TO, Italy
| | - Nazzareno Capitanio
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Silvia Deaglio
- Immunogenetics Unit, Department of Medical Sciences, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Paolo Pinton
- Department of Medical Sciences and Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Simone Cardaci
- Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milano, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, Torino, Italy
| | - Emanuela Tolosano
- Molecular Biotechnology Center (MBC), Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.
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10
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Saccu G, Menchise V, Giordano C, Delli Castelli D, Dastrù W, Pellicano R, Tolosano E, Van Pham P, Altruda F, Fagoonee S. Regenerative Approaches and Future Trends for the Treatment of Corneal Burn Injuries. J Clin Med 2021; 10:jcm10020317. [PMID: 33467167 PMCID: PMC7830803 DOI: 10.3390/jcm10020317] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/13/2022] Open
Abstract
Ocular chemical and thermal burns are frequent causes of hospitalization and require immediate interventions and care. Various surgical and pharmacological treatment strategies are employed according to damage severity. Controlling inflammation and neovascularization while promoting normal ocular surface anatomy and function restoration is the principal aim. In the most severe cases, when epithelial healing is severely affected, reconstruction of the ocular surface may be a valid option, which, however, requires expertise, adequate instruments, and qualified donors. Numerous endogenous and exogenous strategies have been considered for corneal repair. Among these, stem cells and their derivatives have offered numerous attractive possibilities in finding an effective way in stimulating corneal regeneration. Limbal epithelial stem cells and mesenchymal cells from the ocular tissue as well as from various sources have demonstrated their effectiveness in dampening neovascularization, scarring, and inflammation, while promoting epithelialization of the injured cornea. Moreover, a plethora of cytokines and growth factors, and extracellular vesicles, which constitute the secretome of these cells, work in concert to enhance wound healing. In this review, we provide an update on the recent potential therapeutic avenues and clinical applications of stem cells and their products in corneal regeneration after burn injury, as well as current imaging strategies for monitoring therapeutic efficacy and damage resolution.
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Affiliation(s)
- Gabriele Saccu
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | - Valeria Menchise
- Institute of Biostructure and Bioimaging, National Research Council, Molecular Biotechnology Center, 10126 Turin, Italy
- Correspondence: (V.M.); (F.A.); (S.F.); Tel.: +39-0116706423 (S.F.)
| | - Cristina Giordano
- Ophthalmology Veterinary Practice, c.so Galileo Ferraris 121, 10126 Turin, Italy;
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | - Walter Dastrù
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | | | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | - Phuc Van Pham
- Laboratory of Stem Cell Research and Application, and Stem Cell Institute, VNUHCM University of Science, Ho Chi Minh City 08000, Vietnam;
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
- Correspondence: (V.M.); (F.A.); (S.F.); Tel.: +39-0116706423 (S.F.)
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, National Research Council, Molecular Biotechnology Center, 10126 Turin, Italy
- Correspondence: (V.M.); (F.A.); (S.F.); Tel.: +39-0116706423 (S.F.)
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11
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Genova T, Petrillo S, Zicola E, Roato I, Ferracini R, Tolosano E, Altruda F, Carossa S, Mussano F, Munaron L. The crosstalk between osteodifferentiating stem cells and endothelial cells promotes angiogenesis and bone formation. Vascul Pharmacol 2020. [DOI: 10.1016/j.vph.2020.106723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Petrillo S, Carrà G, Bottino P, Zanotto E, De Santis MC, Margaria JP, Giorgio A, Mandili G, Martini M, Cavallo R, Barberio D, Altruda F. A Novel Multiplex qRT-PCR Assay to Detect SARS-CoV-2 Infection: High Sensitivity and Increased Testing Capacity. Microorganisms 2020; 8:microorganisms8071064. [PMID: 32708870 PMCID: PMC7409169 DOI: 10.3390/microorganisms8071064] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/23/2022] Open
Abstract
Rapid and sensitive screening of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is essential to limit the spread of the global pandemic we are facing. Quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR) is currently used for the clinical diagnosis of SARS-CoV-2 infection using nasopharyngeal swabs, tracheal aspirates, or bronchoalveolar lavage (BAL) samples. Despite the high sensitivity of the qRT-PCR method, false negative outcomes might occur, especially in patients with a low viral load. Here, we developed a multiplex qRT-PCR methodology for the simultaneous detection of SARS-CoV-2 genome (N gene) and of the human RNAse P gene as internal control. We found that multiplex qRT-PCR was effective in detecting SARS-Cov-2 infection in human specimens with 100% sensitivity. Notably, patients with few copies of SARS-CoV-2 RNA (<5 copies/reaction) were successfully detected by the novel multiplex qRT-PCR method. Finally, we assessed the efficacy of multiplex qRT-PCR on human nasopharyngeal swabs without RNA extraction. Collectively, our results provide evidence of a novel and reliable tool for SARS-CoV-2 RNA detection in human specimens, which allows the testing capacity to be expanded and the RNA extraction step to be bypassed.
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Affiliation(s)
- Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.C.D.S.); (J.P.M.); (M.M.); (F.A.)
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
- Correspondence: (S.P.); (G.C.)
| | - Giovanna Carrà
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
- Department of Clinical and Biological Sciences, University of Torino, 10043 Orbassano, Italy
- Correspondence: (S.P.); (G.C.)
| | - Paolo Bottino
- Department of Public Health and Pediatrics, Microbiology and Virology Unit, Azienda Ospedaliero Universitaria “Città della Salute e della Scienza”, University of Torino, 10126 Torino, Italy; (P.B.); (E.Z.); (R.C.)
| | - Elisa Zanotto
- Department of Public Health and Pediatrics, Microbiology and Virology Unit, Azienda Ospedaliero Universitaria “Città della Salute e della Scienza”, University of Torino, 10126 Torino, Italy; (P.B.); (E.Z.); (R.C.)
| | - Maria Chiara De Santis
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.C.D.S.); (J.P.M.); (M.M.); (F.A.)
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
| | - Jean Piero Margaria
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.C.D.S.); (J.P.M.); (M.M.); (F.A.)
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
| | - Alessandro Giorgio
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
| | - Giorgia Mandili
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
| | - Miriam Martini
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.C.D.S.); (J.P.M.); (M.M.); (F.A.)
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
| | - Rossana Cavallo
- Department of Public Health and Pediatrics, Microbiology and Virology Unit, Azienda Ospedaliero Universitaria “Città della Salute e della Scienza”, University of Torino, 10126 Torino, Italy; (P.B.); (E.Z.); (R.C.)
| | - Davide Barberio
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (M.C.D.S.); (J.P.M.); (M.M.); (F.A.)
- Molecular Biotechnology Center, Via Nizza 52, 10126 Torino, Italy; (A.G.); (G.M.); (D.B.)
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13
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Cernigliaro V, Peluso R, Zedda B, Silengo L, Tolosano E, Pellicano R, Altruda F, Fagoonee S. Evolving Cell-Based and Cell-Free Clinical Strategies for Treating Severe Human Liver Diseases. Cells 2020; 9:cells9020386. [PMID: 32046114 PMCID: PMC7072646 DOI: 10.3390/cells9020386] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/21/2020] [Accepted: 02/06/2020] [Indexed: 02/07/2023] Open
Abstract
Liver diseases represent a major global health issue, and currently, liver transplantation is the only viable alternative to reduce mortality rates in patients with end-stage liver diseases. However, scarcity of donor organs and risk of recidivism requiring a re-transplantation remain major obstacles. Hence, much hope has turned towards cell-based therapy. Hepatocyte-like cells obtained from embryonic stem cells or adult stem cells bearing multipotent or pluripotent characteristics, as well as cell-based systems, such as organoids, bio-artificial liver devices, bioscaffolds and organ printing are indeed promising. New approaches based on extracellular vesicles are also being investigated as cell substitutes. Extracellular vesicles, through the transfer of bioactive molecules, can modulate liver regeneration and restore hepatic function. This review provides an update on the current state-of-art cell-based and cell-free strategies as alternatives to liver transplantation for patients with end-stage liver diseases.
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Affiliation(s)
- Viviana Cernigliaro
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, 10126 Turin, Italy; (V.C.); (R.P.); (B.Z.)
- Maria Pia Hospital, 10126 Turin, Italy
| | - Rossella Peluso
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, 10126 Turin, Italy; (V.C.); (R.P.); (B.Z.)
- Maria Pia Hospital, 10126 Turin, Italy
| | - Beatrice Zedda
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, 10126 Turin, Italy; (V.C.); (R.P.); (B.Z.)
- Maria Pia Hospital, 10126 Turin, Italy
| | - Lorenzo Silengo
- Molecular Biotechnology Center, Departmet of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, 10126 Turin, Italy; (L.S.); (E.T.)
| | - Emanuela Tolosano
- Molecular Biotechnology Center, Departmet of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, 10126 Turin, Italy; (L.S.); (E.T.)
| | | | - Fiorella Altruda
- Molecular Biotechnology Center, Departmet of Molecular Biotechnology and Health Sciences, University of Turin, Via Nizza 52, 10126 Turin, Italy; (L.S.); (E.T.)
- Correspondence: (F.A.); (S.F.)
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, National Research Council, Molecular Biotechnology Center, Via Nizza 52, 10126 Turin, Italy
- Correspondence: (F.A.); (S.F.)
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14
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Famulari ES, Navarro-Tableros V, Herrera Sanchez MB, Bortolussi G, Gai M, Conti L, Silengo L, Tolosano E, Tetta C, Muro AF, Camussi G, Fagoonee S, Altruda F. Human liver stem cells express UGT1A1 and improve phenotype of immunocompromised Crigler Najjar syndrome type I mice. Sci Rep 2020; 10:887. [PMID: 31965023 PMCID: PMC6972964 DOI: 10.1038/s41598-020-57820-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 01/07/2020] [Indexed: 01/06/2023] Open
Abstract
Crigler Najjar Syndrome type I (CNSI) is a rare recessive disorder caused by mutations in the Ugt1a1 gene. There is no permanent cure except for liver transplantation, and current therapies present several shortcomings. Since stem cell-based therapy offers a promising alternative for the treatment of this disorder, we evaluated the therapeutic potential of human liver stem cells (HLSC) in immune-compromised NOD SCID Gamma (NSG)/Ugt1−/− mice, which closely mimic the pathological manifestations in CNSI patients. To assess whether HLSC expressed UGT1A1, decellularised mouse liver scaffolds were repopulated with these cells. After 15 days’ culture ex vivo, HLSC differentiated into hepatocyte-like cells showing UGT1A1 expression and activity. For the in vivo human cell engraftment and recovery experiments, DiI-labelled HLSC were injected into the liver of 5 days old NSG/Ugt1−/− pups which were analysed at postnatal Day 21. HLSC expressed UGT1A1 in vivo, induced a strong decrease in serum unconjugated bilirubin, thus significantly improving phenotype and survival compared to untreated controls. A striking recovery from brain damage was also observed in HLSC-injected mutant mice versus controls. Our proof-of-concept study shows that HLSC express UGT1A1 in vivo and improve the phenotype and survival of NSG/Ugt1−/− mice, and show promises for the treatment of CNSI.
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Affiliation(s)
- Elvira Smeralda Famulari
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Victor Navarro-Tableros
- 2i3T - Società per la gestione dell'incubatore di imprese e per il trasferimento tecnologico dell'Università degli studi di Torino, Scarl and Molecular Biotechnology Center, Turin, Italy
| | - Maria Beatriz Herrera Sanchez
- 2i3T - Società per la gestione dell'incubatore di imprese e per il trasferimento tecnologico dell'Università degli studi di Torino, Scarl and Molecular Biotechnology Center, Turin, Italy
| | - Giulia Bortolussi
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Marta Gai
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Laura Conti
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Lorenzo Silengo
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy.,Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Center, Turin, Italy
| | - Emanuela Tolosano
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | | | - Andrés Fernando Muro
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Giovanni Camussi
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Center, Turin, Italy.
| | - Fiorella Altruda
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy. .,Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Center, Turin, Italy.
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15
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Ala U, Manco M, Mandili G, Tolosano E, Novelli F, Provero P, Altruda F, Fagoonee S. Proteomics-Based Evidence for a Pro-Oncogenic Role of ESRP1 in Human Colorectal Cancer Cells. Int J Mol Sci 2020; 21:ijms21020575. [PMID: 31963158 PMCID: PMC7014300 DOI: 10.3390/ijms21020575] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/10/2020] [Accepted: 01/14/2020] [Indexed: 12/12/2022] Open
Abstract
The RNA-binding protein, Epithelial Splicing Regulatory Protein 1 (ESRP1) can promote or suppress tumorigenesis depending on the cell type and disease context. In colorectal cancer, we have previously shown that aberrantly high ESRP1 expression can drive tumor progression. In order to unveil the mechanisms by which ESRP1 can modulate cancer traits, we searched for proteins affected by modulation of Esrp1 in two human colorectal cancer cell lines, HCA24 and COLO320DM, by proteomics analysis. Proteins hosted by endogenous ESRP1 ribonucleoprotein complex in HCA24 cells were also analyzed following RNA-immunoprecipitation. Proteomics data were complemented with bioinformatics approach to exploit publicly available data on protein-protein interaction (PPI). Gene Ontology was analysed to identify a common molecular signature possibly explaining the pro-tumorigenic role of ESRP1. Interestingly, proteins identified herein support a role for ESRP1 in response to external stimulus, regulation of cell cycle and hypoxia. Our data provide further insights into factors affected by and entwined with ESRP1 in colorectal cancer.
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Affiliation(s)
- Ugo Ala
- Department of Veterinary Science, University of Turin, 10126 Turin, Italy;
| | - Marta Manco
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy; (M.M.); (E.T.); (P.P.)
| | - Giorgia Mandili
- Center for Experimental Research and Medical Studies, Azienda Universitaria Ospedaliera Città della Salute e della Scienza, 10126 Turin, Italy; (G.M.); (F.N.)
| | - Emanuela Tolosano
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy; (M.M.); (E.T.); (P.P.)
| | - Francesco Novelli
- Center for Experimental Research and Medical Studies, Azienda Universitaria Ospedaliera Città della Salute e della Scienza, 10126 Turin, Italy; (G.M.); (F.N.)
| | - Paolo Provero
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy; (M.M.); (E.T.); (P.P.)
- Center for Translational Genomics and Bioinformatics, San Raffaele Scientific Institute IRCCS, 20132 Milan, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy; (M.M.); (E.T.); (P.P.)
- Correspondence: (F.A.); (S.F.)
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Centre, 10126 Turin, Italy
- Correspondence: (F.A.); (S.F.)
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16
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Genova T, Petrillo S, Zicola E, Roato I, Ferracini R, Tolosano E, Altruda F, Carossa S, Mussano F, Munaron L. The Crosstalk Between Osteodifferentiating Stem Cells and Endothelial Cells Promotes Angiogenesis and Bone Formation. Front Physiol 2019; 10:1291. [PMID: 31681005 PMCID: PMC6802576 DOI: 10.3389/fphys.2019.01291] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 09/25/2019] [Indexed: 12/15/2022] Open
Abstract
The synergistic crosstalk between osteodifferentiating stem cells and endothelial cells (ECs) gained the deserved consideration, shedding light on the role of angiogenesis for bone formation and healing. A deep understanding of the molecular basis underlying the mutual influence of mesenchymal stem cells (MSCs) and ECs in the osteogenic process may help improve greatly bone regeneration. Here, the authors demonstrated that osteodifferentiating MSCs co-cultured with ECs promote angiogenesis and ECs recruitment. Moreover, through the use of 3D co-culture systems, we showed that ECs are in turn able to further stimulate the osteodifferentiation of MSCs, thus enhancing bone production. These findings highlighted the existence of a virtuous loop between MSCs and ECs that is central to the osteogenic process. Unraveling the molecular mechanisms governing the functional interaction MSCs and ECs holds great potential in the field of regenerative medicine.
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Affiliation(s)
- Tullio Genova
- Department of Life Sciences and Systems Biology, UNITO, Turin, Italy.,Department of Surgical Sciences, CIR Dental School, UNITO, Turin, Italy
| | - Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences, UNITO, Turin, Italy
| | - Elisa Zicola
- Department of Clinical and Biological Sciences, UNITO, Orbassano, Italy
| | - Ilaria Roato
- Center for Research and Medical Studies, A.O.U. Città della Salute e della Scienza, Turin, Italy
| | - Riccardo Ferracini
- Department of Surgical Sciences (DISC), Orthopaedic Clinic-IRCCS A.O.U. San Martino, Genoa, Italy
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, UNITO, Turin, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, UNITO, Turin, Italy
| | - Stefano Carossa
- Department of Surgical Sciences, CIR Dental School, UNITO, Turin, Italy
| | - Federico Mussano
- Department of Surgical Sciences, CIR Dental School, UNITO, Turin, Italy
| | - Luca Munaron
- Department of Life Sciences and Systems Biology, UNITO, Turin, Italy
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17
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Destefanis F, Fiorito V, Altruda F, Tolosano E. Investigating the Connection Between Endogenous Heme Accumulation and COX2 Activity in Cancer Cells. Front Oncol 2019; 9:162. [PMID: 30941311 PMCID: PMC6433962 DOI: 10.3389/fonc.2019.00162] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 02/25/2019] [Indexed: 12/18/2022] Open
Abstract
Heme, an iron-containing porphyrin, is fundamental for a variety of functions in cell homeostasis. Nevertheless, recent data indicate that dysregulation of heme metabolism might promote tumorigenesis. The intracellular heme pool is finely regulated through the control of heme synthesis, degradation, incorporation into hemoproteins and trafficking across membranes. All these processes might be potentially targeted to alter endogenous heme content in order to counteract cancer growth. Nevertheless, these putative therapeutic interventions have to take into account the possibility of undesired side effects, such as the over-activation of heme-dependent enzymes involved in cancer. Among them, cyclooxygenase-2 is a prostaglandin-producing hemoprotein, induced during inflammation and in different types of tumor, particularly in colorectal cancer. The aim of this study was to evaluate whether modulation of endogenous heme may affect cyclooxygenase-2 expression and activity, taking advantage of two different approaches able to alter heme levels: the silencing of the heme exporter Feline Leukemia Virus subgroup C receptor 1 and the induction of heme synthesis by 5-aminolevulinic acid administration. Our data demonstrate that the down-regulation of the heme exporter in colorectal cancer cells does not affect cyclooxygenase-2 expression and activity. Conversely, 5-aminolevulinic acid administration results in decreased cyclooxygenase-2 expression. However, the overall cyclooxygenase-2 enzymatic activity is maintained. The present work sheds light on the complex modulation of cyclooxygenase-2 by endogenous heme and support the idea that targeting heme metabolism could be a valuable therapeutic option against cancer.
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Affiliation(s)
- Francesca Destefanis
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Veronica Fiorito
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
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18
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Mancini C, Hoxha E, Iommarini L, Brussino A, Richter U, Montarolo F, Cagnoli C, Parolisi R, Gondor Morosini DI, Nicolò V, Maltecca F, Muratori L, Ronchi G, Geuna S, Arnaboldi F, Donetti E, Giorgio E, Cavalieri S, Di Gregorio E, Pozzi E, Ferrero M, Riberi E, Casari G, Altruda F, Turco E, Gasparre G, Battersby BJ, Porcelli AM, Ferrero E, Brusco A, Tempia F. Mice harbouring a SCA28 patient mutation in AFG3L2 develop late-onset ataxia associated with enhanced mitochondrial proteotoxicity. Neurobiol Dis 2018; 124:14-28. [PMID: 30389403 DOI: 10.1016/j.nbd.2018.10.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/05/2018] [Accepted: 10/28/2018] [Indexed: 12/20/2022] Open
Abstract
Spinocerebellar ataxia 28 is an autosomal dominant neurodegenerative disorder caused by missense mutations affecting the proteolytic domain of AFG3L2, a major component of the mitochondrial m-AAA protease. However, little is known of the underlying pathogenetic mechanisms or how to treat patients with SCA28. Currently available Afg3l2 mutant mice harbour deletions that lead to severe, early-onset neurological phenotypes that do not faithfully reproduce the late-onset and slowly progressing SCA28 phenotype. Here we describe production and detailed analysis of a new knock-in murine model harbouring an Afg3l2 allele carrying the p.Met665Arg patient-derived mutation. Heterozygous mutant mice developed normally but adult mice showed signs of cerebellar ataxia detectable by beam test. Although cerebellar pathology was negative, electrophysiological analysis showed a trend towards increased spontaneous firing in Purkinje cells from heterozygous mutants with respect to wild-type controls. As homozygous mutants died perinatally with evidence of cardiac atrophy, for each genotype we generated mouse embryonic fibroblasts (MEFs) to investigate mitochondrial function. MEFs from mutant mice showed altered mitochondrial bioenergetics, with decreased basal oxygen consumption rate, ATP synthesis and mitochondrial membrane potential. Mitochondrial network formation and morphology was altered, with greatly reduced expression of fusogenic Opa1 isoforms. Mitochondrial alterations were also detected in cerebella of 18-month-old heterozygous mutants and may be a hallmark of disease. Pharmacological inhibition of de novo mitochondrial protein translation with chloramphenicol caused reversal of mitochondrial morphology in homozygous mutant MEFs, supporting the relevance of mitochondrial proteotoxicity for SCA28 pathogenesis and therapy development.
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Affiliation(s)
- Cecilia Mancini
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Eriola Hoxha
- Department of Neuroscience, University of Torino, Torino, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Luisa Iommarini
- Department of Pharmacy and Biotechnologies (FABIT), University of Bologna, Bologna, Italy
| | | | - Uwe Richter
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Francesca Montarolo
- Department of Neuroscience, University of Torino, Torino, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Claudia Cagnoli
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Roberta Parolisi
- Department of Neuroscience, University of Torino, Torino, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Diana Iulia Gondor Morosini
- Department of Neuroscience, University of Torino, Torino, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Valentina Nicolò
- Department of Neuroscience, University of Torino, Torino, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
| | - Francesca Maltecca
- Università Vita-Salute San Raffaele, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy
| | - Luisa Muratori
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy; Department of Clinical and Biological Sciences, University of Torino, Torino, Italy
| | - Giulia Ronchi
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy; Department of Clinical and Biological Sciences, University of Torino, Torino, Italy
| | - Stefano Geuna
- Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy; Department of Clinical and Biological Sciences, University of Torino, Torino, Italy
| | - Francesca Arnaboldi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Elena Donetti
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Elisa Giorgio
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Simona Cavalieri
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Eleonora Di Gregorio
- Medical Genetics Unit, Città della Salute e della Scienza University Hospital, Torino, Italy
| | - Elisa Pozzi
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Marta Ferrero
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Evelise Riberi
- Department of Public Health and Pediatrics, University of Torino, Torino, Italy
| | - Giorgio Casari
- Università Vita-Salute San Raffaele, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Emilia Turco
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Giuseppe Gasparre
- Department Medical and Surgical Sciences, Medical Genetics, University of Bologna, Bologna, Italy
| | | | - Anna Maria Porcelli
- Department of Pharmacy and Biotechnologies (FABIT), University of Bologna, Bologna, Italy
| | - Enza Ferrero
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Alfredo Brusco
- Department of Medical Sciences, University of Torino, Torino, Italy; Medical Genetics Unit, Città della Salute e della Scienza University Hospital, Torino, Italy.
| | - Filippo Tempia
- Department of Neuroscience, University of Torino, Torino, Italy; Neuroscience Institute Cavalieri Ottolenghi (NICO), Orbassano, Italy
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19
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Genova T, Zicola E, Petrillo S, Chiabrando D, Tolosano E, Altruda F, Carossa S, Mussano F, Munaron L. Cross-talk between osteoblastic differentiated mesenchymal stem cells and endothelial cells in co-culture. Vascul Pharmacol 2018. [DOI: 10.1016/j.vph.2017.12.027] [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: 11/27/2022]
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20
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Voena C, Varesio LM, Zhang L, Menotti M, Poggio T, Panizza E, Wang Q, Minero VG, Fagoonee S, Compagno M, Altruda F, Monti S, Chiarle R. Oncogenic ALK regulates EMT in non-small cell lung carcinoma through repression of the epithelial splicing regulatory protein 1. Oncotarget 2017; 7:33316-30. [PMID: 27119231 PMCID: PMC5078097 DOI: 10.18632/oncotarget.8955] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 03/29/2016] [Indexed: 11/25/2022] Open
Abstract
A subset of Non-Small Cell Lung Carcinoma (NSCLC) carries chromosomal rearrangements involving the Anaplastic Lymphoma Kinase (ALK) gene. ALK-rearranged NSCLC are typically adenocarcinoma characterized by a solid signet-ring cell pattern that is frequently associated with a metastatic phenotype. Recent reports linked the presence of ALK rearrangement to an epithelial-mesenchymal transition (EMT) phenotype in NSCLC, but the extent and the mechanisms of an ALK-mediated EMT in ALK-rearranged NSCLC are largely unknown. We found that the ALK-rearranged H2228 and DFCI032, but not the H3122, cell lines displayed a mesenchymal phenotype. In these cell lines, oncogenic ALK activity dictated an EMT phenotype by directly suppressing E-cadherin and up-regulating vimentin expression, as well as expression of other genes involved in EMT. We found that the epithelial splicing regulatory protein 1 (ESRP1), a key regulator of the splicing switch during EMT, was repressed by EML4-ALK activity. The treatment of NSCLC cells with ALK tyrosine kinase inhibitors (TKIs) led to up-regulation of ESRP1 and E-cadherin, thus reverting the phenotype from mesenchymal to epithelial (MET). Consistently, ESRP1 knock-down impaired E-cadherin up-regulation upon ALK inhibition, whereas enforced expression of ESRP1 was sufficient to increase E-cadherin expression. These findings demonstrate an ALK oncogenic activity in the regulation of an EMT phenotype in a subset of NSCLC with potential implications for the biology of ALK-rearranged NSCLC in terms of metastatic propensity and resistance to therapy.
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Affiliation(s)
- Claudia Voena
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy.,Department of Pathology, Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Lydia M Varesio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Liye Zhang
- Section of Computational Biomedicine, Boston University School of Medicine, Boston, MA, USA
| | - Matteo Menotti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Teresa Poggio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Elena Panizza
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Qi Wang
- Department of Pathology, Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Valerio G Minero
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Sharmila Fagoonee
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Mara Compagno
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy.,Department of Pathology, Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Stefano Monti
- Section of Computational Biomedicine, Boston University School of Medicine, Boston, MA, USA
| | - Roberto Chiarle
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy.,Department of Pathology, Children's Hospital and Harvard Medical School, Boston, MA, USA
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21
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Ingoglia G, Sag CM, Rex N, De Franceschi L, Vinchi F, Cimino J, Petrillo S, Wagner S, Kreitmeier K, Silengo L, Altruda F, Maier LS, Hirsch E, Ghigo A, Tolosano E. Hemopexin counteracts systolic dysfunction induced by heme-driven oxidative stress. Free Radic Biol Med 2017; 108:452-464. [PMID: 28400318 DOI: 10.1016/j.freeradbiomed.2017.04.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 03/30/2017] [Accepted: 04/01/2017] [Indexed: 12/25/2022]
Abstract
Heart failure is a leading cause of morbidity and mortality in patients affected by different disorders associated to intravascular hemolysis. The leading factor is the presence of pathologic amount of pro-oxidant free heme in the bloodstream, due to the exhaustion of the natural heme scavenger Hemopexin (Hx). Here, we evaluated whether free heme directly affects cardiac function, and tested the therapeutic potential of replenishing serum Hx for increasing serum heme buffering capacity. The effect of heme on cardiac function was assessed in vitro, on primary cardiomyocytes and H9c2 myoblast cell line, and in vivo, in Hx-/- mice and in genetic and acquired mouse models of intravascular hemolysis. Purified Hx or anti-oxidants N-Acetyl-L-cysteine and α-tocopherol were used to counteract heme cardiotoxicity. In mice, Hx loss/depletion resulted in heme accumulation and enhanced reactive oxygen species (ROS) production in the heart, which ultimately led to severe systolic dysfunction. Similarly, high ROS reduced systolic Ca2+ transient amplitudes and fractional shortening in primary cardiomyocytes exposed to free heme. In keeping with these Ca2+ handling alterations, oxidation and CaMKII-dependent phosphorylation of Ryanodine Receptor 2 were higher in Hx-/- hearts than in controls. Administration of anti-oxidants prevented systolic failure both in vitro and in vivo. Intriguingly, Hx rescued contraction defects of heme-treated cardiomyocytes and preserved cardiac function in hemolytic mice. We show that heme-mediated oxidative stress perturbs cardiac Ca2+ homeostasis and promotes contractile dysfunction. Scavenging heme, Hx counteracts cardiac heme toxicity and preserves left ventricular function. Our data generate the rationale to consider the therapeutic use of Hx to limit the cardiotoxicity of free heme in hemolytic disorders.
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Affiliation(s)
- Giada Ingoglia
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Can Martin Sag
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Nikolai Rex
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Lucia De Franceschi
- Dept. Medicine, Università degli Studi di Verona-Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Francesca Vinchi
- Heidelberg University Hospital / EMBL Heidelberg, Heidelberg, Germany
| | - James Cimino
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Sara Petrillo
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Stefan Wagner
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Klaus Kreitmeier
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Lorenzo Silengo
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Lars S Maier
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Emilio Hirsch
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Alessandra Ghigo
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Emanuela Tolosano
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.
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22
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Ingoglia G, Sag CM, Rex N, De Franceschi L, Vinchi F, Cimino J, Petrillo S, Wagner S, Kreitmeier K, Silengo L, Altruda F, Maier LS, Hirsch E, Ghigo A, Tolosano E. Data demonstrating the anti-oxidant role of hemopexin in the heart. Data Brief 2017; 13:69-76. [PMID: 28560284 PMCID: PMC5443894 DOI: 10.1016/j.dib.2017.05.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 05/02/2017] [Accepted: 05/09/2017] [Indexed: 11/19/2022] Open
Abstract
The data presented in this article are related to the research article entitled Hemopexin counteracts systolic dysfunction induced by heme-driven oxidative stress (G. Ingoglia, C. M. Sag, N. Rex, L. De Franceschi, F. Vinchi, J. Cimino, S. Petrillo, S. Wagner, K. Kreitmeier, L. Silengo, F. Altruda, L. S. Maier, E. Hirsch, A. Ghigo and E. Tolosano, 2017) [1]. Data show that heme induces reactive oxygen species (ROS) production in primary cardiomyocytes. H9c2 myoblastic cells treated with heme bound to human Hemopexin (Hx) are protected from heme accumulation and oxidative stress. Similarly, the heme-driven oxidative response is reduced in primary cardiomyocytes treated with Hx-heme compared to heme alone. Our in vivo data show that mouse models of hemolytic disorders, β-thalassemic mice and phenylhydrazine-treated mice, have low serum Hx associated to enhanced expression of heme- and oxidative stress responsive genes in the heart. Hx-/- mice do not show signs of heart fibrosis or overt inflammation. For interpretation and discussion of these data, refer to the research article referenced above.
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Affiliation(s)
- Giada Ingoglia
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Can Martin Sag
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Nikolai Rex
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Lucia De Franceschi
- Dept. Medicine, Università degli Studi di Verona–Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Francesca Vinchi
- Heidelberg University Hospital / EMBL Heidelberg, Heidelberg, Germany
| | - James Cimino
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Sara Petrillo
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Stefan Wagner
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Klaus Kreitmeier
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Lorenzo Silengo
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Lars S. Maier
- Dept. Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Emilio Hirsch
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Alessandra Ghigo
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Emanuela Tolosano
- Dept. Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- Corresponding author.
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23
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Chiabrando D, Castori M, di Rocco M, Ungelenk M, Gießelmann S, Di Capua M, Madeo A, Grammatico P, Bartsch S, Hübner CA, Altruda F, Silengo L, Tolosano E, Kurth I. Mutations in the Heme Exporter FLVCR1 Cause Sensory Neurodegeneration with Loss of Pain Perception. PLoS Genet 2016; 12:e1006461. [PMID: 27923065 PMCID: PMC5140052 DOI: 10.1371/journal.pgen.1006461] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 11/04/2016] [Indexed: 12/12/2022] Open
Abstract
Pain is necessary to alert us to actual or potential tissue damage. Specialized nerve cells in the body periphery, so called nociceptors, are fundamental to mediate pain perception and humans without pain perception are at permanent risk for injuries, burns and mutilations. Pain insensitivity can be caused by sensory neurodegeneration which is a hallmark of hereditary sensory and autonomic neuropathies (HSANs). Although mutations in several genes were previously associated with sensory neurodegeneration, the etiology of many cases remains unknown. Using next generation sequencing in patients with congenital loss of pain perception, we here identify bi-allelic mutations in the FLVCR1 (Feline Leukemia Virus subgroup C Receptor 1) gene, which encodes a broadly expressed heme exporter. Different FLVCR1 isoforms control the size of the cytosolic heme pool required to sustain metabolic activity of different cell types. Mutations in FLVCR1 have previously been linked to vision impairment and posterior column ataxia in humans, but not to HSAN. Using fibroblasts and lymphoblastoid cell lines from patients with sensory neurodegeneration, we here show that the FLVCR1-mutations reduce heme export activity, enhance oxidative stress and increase sensitivity to programmed cell death. Our data link heme metabolism to sensory neuron maintenance and suggest that intracellular heme overload causes early-onset degeneration of pain-sensing neurons in humans. Hereditary Sensory and Autonomic Neuropathy (HSAN) is a genetic disorder mainly characterized by the impairment of sensory neurons, which transmit information about sensations such as pain, temperature and touch. Therefore, unintentional self-injury, leading to ulcers and eventually amputations are common in affected individuals. Although mutations in several genes were previously associated with sensory neurodegeneration and pain insensitivity, the etiology of many cases remains unknown. We here identify mutations in the heme exporter protein FLVCR1 in patients with congenital inability to experience pain. We showed that FLVCR1 mutations results in reduced heme export activity, enhanced oxidative stress and increased sensitivity to programmed cell death. These data assign a surprising role for heme to sensory neuron maintenance.
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Affiliation(s)
- Deborah Chiabrando
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
- * E-mail: (DC); (ET); (IK)
| | - Marco Castori
- Unit of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
| | - Maja di Rocco
- Unit of Rare Diseases, Department of Pediatrics, Gaslini Institute, Genoa, Italy
| | - Martin Ungelenk
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany
| | - Sebastian Gießelmann
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany
- Institute of Human Genetics, Uniklinik RWTH Aachen, Aachen, Germany
| | - Matteo Di Capua
- Unit of Neurophysiopathology, Department of Neuroscience, Bambino Gesù Children's Hospital, Rome, Italy
| | - Annalisa Madeo
- Unit of Rare Diseases, Department of Pediatrics, Gaslini Institute, Genoa, Italy
| | - Paola Grammatico
- Unit of Medical Genetics, Department of Molecular Medicine, Sapienza University, San Camillo-Forlanini Hospital, Rome, Italy
| | - Sophie Bartsch
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany
| | - Christian A. Hübner
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Lorenzo Silengo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
- * E-mail: (DC); (ET); (IK)
| | - Ingo Kurth
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany
- Institute of Human Genetics, Uniklinik RWTH Aachen, Aachen, Germany
- * E-mail: (DC); (ET); (IK)
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Pellicano R, Fagoonee S, Altruda F, Bruno M, Saracco GM, De Angelis C. Endoscopic imaging in the management of gastroenteropancreatic neuroendocrine tumors. MINERVA ENDOCRINOL 2016; 41:490-498. [PMID: 27600643] [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: 06/06/2023]
Abstract
Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) are a heterogeneous group of tumors deriving from the gastrointestinal (GI) neuroendocrine system. Since these neoplasms are usually very small, located deeply within the retroperitoneum or into an extramucosal site of the GI tract and, lastly, because they may be multi-sited, radiological imaging modalities, in combination with endoscopy, are the diagnostic workhorses in patients with GEP-NETs. Endoscopic approach is useful for detection, bioptic diagnosis and curative resection of small GEP-NETs of stomach, duodenum, jejuno-ileum, and colon-rectum. Moreover, endoscopic ultrasonography (EUS), associated with high frequency miniprobes, is a valuable procedure in regional staging of lesions of the GI wall and can provide information which has a remarkable impact on therapeutic choices. EUS is still the sole technique, in a substantial number of cases, providing a definitive diagnosis of pancreatic insulinoma and it detects and follows small lesions of the pancreas in patients with Multiple Endocrine Neoplasia type 1 syndrome. EUS should be performed in those cases in which morphological or molecular imaging modalities need to be supported because of negative or dubious results. In this review we describe the applications of endoscopic procedures in the management of GEP-NETs.
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Affiliation(s)
- Rinaldo Pellicano
- Department of Gastroenterology and Hepatology, Molinette Hospital, Turin, Italy -
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25
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Ribaldone DG, Fagoonee S, Hickman I, Altruda F, Saracco GM, Pellicano R. Helicobacter pylori infection and ischemic heart disease: could experimental data lead to clinical studies? Minerva Cardioangiol 2016; 64:686-696. [PMID: 27603552] [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: 06/06/2023]
Abstract
Despite the remarkable advances made in primary prevention and treatment, ischemic heart disease (IHD) remains the leading cause of death and a significant cause of disability in developed countries. Since traditional cardiovascular risk factors failed to predict all cases of IHD, there is an intensive research to explore other potential etiologic factors. Among these, numerous studies have considered the theoretical link between IHD and chronic infections, including Helicobacter pylori (H. pylori). Considering that epidemiologic studies have produced conflicting results, due to geographical variations of IHD and H. pylori prevalence as well as heterogeneity of study designs, an alternative way to analyze this topic is to assess if consistency for a biological plausibility exists. In this review we critically analyzed the experimental data on this topic, to assess whether their results could lead future clinical studies.
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Fagoonee S, Famulari ES, Silengo L, Camussi G, Altruda F. Prospects for Adult Stem Cells in the Treatment of Liver Diseases. Stem Cells Dev 2016; 25:1471-1482. [PMID: 27503633 DOI: 10.1089/scd.2016.0144] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Hepatocytes constitute the main bulk of the liver and perform several essential functions. After injury, the hepatocytes have a remarkable capacity to regenerate and restore functionality. However, in some cases, the endogenous hepatocytes cannot replicate or restore the function, and liver transplantation, which is not exempt of complications, is required. Stem cells offer in theory the possibility of generating unlimited supply of hepatocytes in vitro due to their capacity to self-renew and differentiate when given the right cues. Stem cells isolated from an array of tissues have been investigated for their capacity to differentiate into hepatocyte-like cells in vitro and are employed in rescue experiments in vivo. Adult stem cells have gained in attractiveness over embryonic stem cells for liver cell therapy due to their origin, multipotentiality, and the possibility of autologous transplantation. This review deals with the promise and limitations of adult stem cells in clinically restoring liver functionality.
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Affiliation(s)
- Sharmila Fagoonee
- 1 Institute of Biostructure and Bioimaging , CNR, Turin, Italy .,2 Molecular Biotechnology Center, University of Turin , Turin, Italy .,3 Department of Molecular Biotechnology and Health Sciences, University of Turin , Turin, Italy
| | - Elvira Smeralda Famulari
- 2 Molecular Biotechnology Center, University of Turin , Turin, Italy .,3 Department of Molecular Biotechnology and Health Sciences, University of Turin , Turin, Italy
| | - Lorenzo Silengo
- 2 Molecular Biotechnology Center, University of Turin , Turin, Italy .,3 Department of Molecular Biotechnology and Health Sciences, University of Turin , Turin, Italy
| | - Giovanni Camussi
- 2 Molecular Biotechnology Center, University of Turin , Turin, Italy .,4 Department of Medical Sciences, University of Torino , Torino, Italy
| | - Fiorella Altruda
- 2 Molecular Biotechnology Center, University of Turin , Turin, Italy .,3 Department of Molecular Biotechnology and Health Sciences, University of Turin , Turin, Italy
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27
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Sag CM, Ward A, Crocini C, Watkins A, Hayer S, Wang Y, Rex N, Wagner S, De Franceschi L, Vinchi F, Cimino J, Petrillo S, Silengo L, Altruda F, Maier LS, Hirsch E, Ghigo A, Tolosano E, Angelini GD, George SJ, Zakkar M, Ferrantini C, Coppini R, Scardigli M, Yan P, Loew LM, Smith G, Cerbai E, Poggesi C, Pavone FS, Sacconi L, Church S, Begley P, Eisner D, Trafford A, Cooper G, Inci M, Niederreiter B, Shvets T, Redlich K, Kiss A, Podesser B, D'Souza A, Johnsen AB, Olieslagers S, Bucchi A, Martins PDC, DiFrancesco D, Dobrzynski H, Piggins HD, Boyett MR. Late Breaking Science502Hemopexin counteracts systolic dysfunction induced by heme overload503Inhibition of NF-kappa B suppressed inflammation induced by acute shear stress in endothelial cells: Implications for vein graft failure504Optical treatment of cardiac arrhythmias505Tachypacing-induced heart failure: a metabolomic investigation506Characterization of early left ventricle dysfunction in a relevant experimental model for human rheumatoid arthritis507Circadian rhythm in heart rate is due to an intrinsic circadian clock in the sinus node. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
AIMS The maintenance of heme homeostasis, mucosa cell renewal, and redox environment in the intestine is essential to permit digestion, absorption, cell proliferation, cell apoptosis, and immune response and to avoid the development of gut disorders. The feline leukemia virus, subgroup C, receptor 1a (FLVCR1a) is a heme exporter expressed in almost all cell types, including intestinal cells. This work investigates the role of FLVCR1a in the intestine, taking advantage of an intestine-specific conditional Flvcr1a-knockout mouse and of FLVCR1a-depleted Caco2 cells. RESULTS The data show that FLVCR1a does not participate in the absorption of dietary heme, whereas it is involved in the export of de novo synthesized heme from intestinal cells. The loss of Flvcr1a is associated with a decrease of intestinal cell proliferation and with alterations in the peculiar homeostasis of proliferating cells, including the maintenance of their redox status. The involvement of FLVCR1a in these processes renders this exporter crucial for the survival of mice in a model of ulcerative colitis. INNOVATION These findings shed light on the role of heme export in the dietary heme absorption process and unravel a new role for heme export in the control of mucosal renewal and in proliferating cell redox status and metabolic activity, demonstrating a crucial role for FLVCR1a in maintaining intestinal homeostasis in both physiologic and pathologic situations. CONCLUSION By exporting the excess of de novo synthesized heme from intestinal cells, FLVCR1a participates in the control of intestinal mucosa homeostasis.
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Affiliation(s)
- Veronica Fiorito
- 1 Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
| | - Marco Forni
- 2 EuroClone S.p.A Research Laboratory, Molecular Biotechnology Centre (MBC), University of Torino , Torino, Italy
| | - Lorenzo Silengo
- 1 Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
| | - Fiorella Altruda
- 1 Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
| | - Emanuela Tolosano
- 1 Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino , Torino, Italy
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29
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Voena C, Menotti M, Mastini C, Di Giacomo F, Longo DL, Castella B, Merlo MEB, Ambrogio C, Wang Q, Minero VG, Poggio T, Martinengo C, D'Amico L, Panizza E, Mologni L, Cavallo F, Altruda F, Butaney M, Capelletti M, Inghirami G, Jänne PA, Chiarle R. Efficacy of a Cancer Vaccine against ALK-Rearranged Lung Tumors. Cancer Immunol Res 2015; 3:1333-1343. [PMID: 26419961 DOI: 10.1158/2326-6066.cir-15-0089] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/23/2015] [Indexed: 01/14/2023]
Abstract
Non-small cell lung cancer (NSCLC) harboring chromosomal rearrangements of the anaplastic lymphoma kinase (ALK) gene is treated with ALK tyrosine kinase inhibitors (TKI), but the treatment is successful for only a limited amount of time; most patients experience a relapse due to the development of drug resistance. Here, we show that a vaccine against ALK induced a strong and specific immune response that both prophylactically and therapeutically impaired the growth of ALK-positive lung tumors in mouse models. The ALK vaccine was efficacious also in combination with ALK TKI treatment and significantly delayed tumor relapses after TKI suspension. We found that lung tumors containing ALK rearrangements induced an immunosuppressive microenvironment, regulating the expression of PD-L1 on the surface of lung tumor cells. High PD-L1 expression reduced ALK vaccine efficacy, which could be restored by administration of anti-PD-1 immunotherapy. Thus, combinations of ALK vaccine with TKIs and immune checkpoint blockade therapies might represent a powerful strategy for the treatment of ALK-driven NSCLC.
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Affiliation(s)
- Claudia Voena
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Matteo Menotti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Cristina Mastini
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Filomena Di Giacomo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Dario Livio Longo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Molecular Imaging Center, University of Torino, Torino, Italy
| | - Barbara Castella
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Maria Elena Boggio Merlo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Chiara Ambrogio
- Molecular Oncology Program, Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Qi Wang
- Department of Pathology, Children's Hospital Harvard Medical School, Boston, MA 02115, USA
| | - Valerio Giacomo Minero
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Teresa Poggio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Cinzia Martinengo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Lucia D'Amico
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Elena Panizza
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Luca Mologni
- Department of Health Sciences, University of Milano-Bicocca, Milano, Italy
| | - Federica Cavallo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Mohit Butaney
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Marzia Capelletti
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Giorgio Inghirami
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy
| | - Pasi A Jänne
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Lowe Center for Thoracic Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.,Belfer Institute for Applied Cancer Science, Dana Farber Cancer Institute, Boston, MA 02115, USA
| | - Roberto Chiarle
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.,Center for Experimental Research and Medical Studies (CERMS), Città della Salute e della Scienza, Torino, Italy.,Department of Pathology, Children's Hospital Harvard Medical School, Boston, MA 02115, USA
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30
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Fagoonee S, Famulari ES, Silengo L, Tolosano E, Altruda F. Long Term Liver Engraftment of Functional Hepatocytes Obtained from Germline Cell-Derived Pluripotent Stem Cells. PLoS One 2015; 10:e0136762. [PMID: 26323094 PMCID: PMC4556379 DOI: 10.1371/journal.pone.0136762] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 08/08/2015] [Indexed: 12/25/2022] Open
Abstract
One of the major hurdles in liver gene and cell therapy is availability of ex vivo-expanded hepatocytes. Pluripotent stem cells are an attractive alternative. Here, we show that hepatocyte precursors can be isolated from male germline cell-derived pluripotent stem cells (GPSCs) using the hepatoblast marker, Liv2, and induced to differentiate into hepatocytes in vitro. These cells expressed hepatic-specific genes and were functional as demonstrated by their ability to secrete albumin and produce urea. When transplanted in the liver parenchyma of partially hepatectomised mice, Liv2-sorted cells showed regional and heterogeneous engraftment in the injected lobe. Moreover, approximately 50% of Y chromosome-positive, GPSC-derived cells were found in the female livers, in the region of engraftment, even one month after cell injection. This is the first study showing that Liv2-sorted GPSCs-derived hepatocytes can undergo long lasting engraftment in the mouse liver. Thus, GPSCs might offer promise for regenerative medicine.
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Affiliation(s)
- Sharmila Fagoonee
- Institute for Biostructures and Bioimages (CNR), Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
- * E-mail: (SF); (FA)
| | - Elvira Smeralda Famulari
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Lorenzo Silengo
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Emanuela Tolosano
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
- * E-mail: (SF); (FA)
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31
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Mercurio S, Aspesi A, Silengo L, Altruda F, Dianzani I, Chiabrando D. Alteration of heme metabolism in a cellular model of Diamond-Blackfan anemia. Eur J Haematol 2015; 96:367-74. [PMID: 26058344 DOI: 10.1111/ejh.12599] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2015] [Indexed: 01/23/2023]
Abstract
Diamond-Blackfan anemia (DBA) is a congenital pure red cell aplasia often associated with skeletal malformations. Mutations in ribosomal protein coding genes, mainly in RPS19, account for the majority of DBA cases. The molecular mechanisms underlying DBA pathogenesis are still not completely understood. Alternative spliced isoforms of FLVCR1 (feline leukemia virus subgroup C receptor 1) transcript coding for non-functional proteins have been reported in some DBA patients. Consistently, a phenotype very close to DBA has been described in animal models of FLVCR1 deficiency. FLVCR1 gene codes for two proteins: the plasma membrane heme exporter FLVCR1a and the mitochondrial heme exporter FLVCR1b. The coordinated expression of both FLVCR1 isoforms regulates an intracellular heme pool, necessary for proper expansion and differentiation of erythroid precursors. Here, we investigate the role of FLVCR1 isoforms in a cellular model of DBA. RPS19-downregulated TF1 cells show reduced FLVCR1a and FLVCR1b mRNA levels associated with heme overload. The downregulation of FLVCR1 isoforms affects cell cycle progression and apoptosis in differentiating K562 cells, a phenotype similar to DBA. Taken together, these data suggest that alteration of heme metabolism could play a role in the pathogenesis of DBA.
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Affiliation(s)
- Sonia Mercurio
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Anna Aspesi
- Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| | - Lorenzo Silengo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Irma Dianzani
- Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| | - Deborah Chiabrando
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
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Mercurio S, Petrillo S, Chiabrando D, Bassi ZI, Gays D, Camporeale A, Vacaru A, Miniscalco B, Valperga G, Silengo L, Altruda F, Baron MH, Santoro MM, Tolosano E. The heme exporter Flvcr1 regulates expansion and differentiation of committed erythroid progenitors by controlling intracellular heme accumulation. Haematologica 2015; 100:720-9. [PMID: 25795718 DOI: 10.3324/haematol.2014.114488] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 03/13/2015] [Indexed: 12/17/2022] Open
Abstract
Feline leukemia virus subgroup C receptor 1 (Flvcr1) encodes two heme exporters: FLVCR1a, which localizes to the plasma membrane, and FLVCR1b, which localizes to mitochondria. Here, we investigated the role of the two Flvcr1 isoforms during erythropoiesis. We showed that, in mice and zebrafish, Flvcr1a is required for the expansion of committed erythroid progenitors but cannot drive their terminal differentiation, while Flvcr1b contributes to the expansion phase and is required for differentiation. FLVCR1a-down-regulated K562 cells have defective proliferation, enhanced differentiation, and heme loading in the cytosol, while FLVCR1a/1b-deficient K562 cells show impairment in both proliferation and differentiation, and accumulate heme in mitochondria. These data support a model in which the coordinated expression of Flvcr1a and Flvcr1b contributes to control the size of the cytosolic heme pool required to sustain metabolic activity during the expansion of erythroid progenitors and to allow hemoglobinization during their terminal maturation. Consistently, reduction or increase of the cytosolic heme rescued the erythroid defects in zebrafish deficient in Flvcr1a or Flvcr1b, respectively. Thus, heme export represents a tightly regulated process that controls erythropoiesis.
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Affiliation(s)
- Sonia Mercurio
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Deborah Chiabrando
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Zuni Irma Bassi
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Dafne Gays
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Annalisa Camporeale
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Andrei Vacaru
- Tisch Cancer Institute and Black Family Stem Cell Institute, Division of Hematology and Medical Oncology and Departments of Developmental and Regenerative Biology and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Giulio Valperga
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Lorenzo Silengo
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
| | - Margaret H Baron
- Tisch Cancer Institute and Black Family Stem Cell Institute, Division of Hematology and Medical Oncology and Departments of Developmental and Regenerative Biology and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Massimo Mattia Santoro
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy Vesalius Research Center, VIB-KUL, Leuven, Belgium
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences and Molecular Biotechnology Center, University of Turin, Italy
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Antonini D, Sirico A, Aberdam E, Ambrosio R, Campanile C, Fagoonee S, Altruda F, Aberdam D, Brissette JL, Missero C. A composite enhancer regulates p63 gene expression in epidermal morphogenesis and in keratinocyte differentiation by multiple mechanisms. Nucleic Acids Res 2015; 43:862-74. [PMID: 25567987 PMCID: PMC4333422 DOI: 10.1093/nar/gku1396] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
p63 is a crucial regulator of epidermal development, but its transcriptional control has remained elusive. Here, we report the identification of a long-range enhancer (p63LRE) that is composed of two evolutionary conserved modules (C38 and C40), acting in concert to control tissue- and layer-specific expression of the p63 gene. Both modules are in an open and active chromatin state in human and mouse keratinocytes and in embryonic epidermis, and are strongly bound by p63. p63LRE activity is dependent on p63 expression in embryonic skin, and also in the commitment of human induced pluripotent stem cells toward an epithelial cell fate. A search for other transcription factors involved in p63LRE regulation revealed that the CAAT enhancer binding proteins Cebpa and Cebpb and the POU domain-containing protein Pou3f1 repress p63 expression during keratinocyte differentiation by binding the p63LRE enhancer. Collectively, our data indicate that p63LRE is composed of additive and partly redundant enhancer modules that act to direct robust p63 expression selectively in the basal layer of the epidermis.
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Affiliation(s)
| | - Anna Sirico
- CEINGE Biotecnologie Avanzate, Napoli, Italy
| | - Edith Aberdam
- INSERM UMR-S 976, Paris, France Université Paris-Diderot, Hopital St-Louis, Paris, France
| | | | | | - Sharmila Fagoonee
- Institute for Biostructures and Bioimages (CNR), c/o Molecular Biotechnology Center, University of Turin, Torino, Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin, Torino, Italy
| | - Daniel Aberdam
- INSERM UMR-S 976, Paris, France Université Paris-Diderot, Hopital St-Louis, Paris, France
| | - Janice L Brissette
- Department of Cell Biology, State University of New York Downstate Medical Center, NY, USA
| | - Caterina Missero
- CEINGE Biotecnologie Avanzate, Napoli, Italy Department of Biology, University of Naples Federico II, Napoli, Italy
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Adriani A, Fagoonee S, De Angelis C, Altruda F, Pellicano R. Helicobacter pylori infection and dementia: can actual data reinforce the hypothesis of a causal association? Panminerva Med 2014; 56:195-199. [PMID: 25056243] [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: 06/03/2023]
Abstract
Helicobacter pylori (H. pylori) is involved in the development of several gastroduodenal diseases. Since the latest decade, several studies have reported on the link between chronic H. pylori infection and a variety of extragastric manifestations, including dementia. To identify the publications on the association between H. pylori and dementia, a MEDLINE search was conducted. Although case-control studies reported controversial data, a recent longitudinal population-based cohort study found that after 20 years of follow-up, 28.9% of H. pylori-positive versus 21.1% of H. pylori-negative subjects developed dementia. After correction for confounding factors, the infection was significantly associated with higher risk of developing dementia (P=0.04). Moreover, in another study evaluating the effect of H. pylori eradication on the progression of dementia in Alzheimer's disease patients with peptic ulcer, the cure of the bacterium was associated with a decreased risk of dementia progression compared to persistent infection. To date, defining H. pylori as a target for prevention or treatment of dementia remains a topic with much controversy but of essence, as any relationship would reduce, due to the cost-effectiveness of the therapy, a burden on the National Health Care budget. The need for extensive studies with appropriate epidemiological and clinical approaches is crucial to investigate a potential causal relationship.
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Affiliation(s)
- A Adriani
- Department of Gastroenterology and Hepatology Molinette Hospital, Turin, Italy -
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Vinchi F, Ingoglia G, Chiabrando D, Mercurio S, Turco E, Silengo L, Altruda F, Tolosano E. Heme exporter FLVCR1a regulates heme synthesis and degradation and controls activity of cytochromes P450. Gastroenterology 2014; 146:1325-38. [PMID: 24486949 PMCID: PMC4000440 DOI: 10.1053/j.gastro.2014.01.053] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 01/28/2014] [Accepted: 01/28/2014] [Indexed: 12/05/2022]
Abstract
BACKGROUND & AIMS The liver has one of the highest rates of heme synthesis of any organ. More than 50% of the heme synthesized in the liver is used for synthesis of P450 enzymes, which metabolize exogenous and endogenous compounds that include natural products, hormones, drugs, and carcinogens. Feline leukemia virus subgroup C cellular receptor 1a (FLVCR1a) is plasma membrane heme exporter that is ubiquitously expressed and controls intracellular heme content in hematopoietic lineages. We investigated the role of Flvcr1a in liver function in mice. METHODS We created mice with conditional disruption of Mfsd7b, which encodes Flvcr1a, in hepatocytes (Flvcr1a(fl/fl);alb-cre mice). Mice were analyzed under basal conditions, after phenylhydrazine-induced hemolysis, and after induction of cytochromes P450 synthesis. Livers were collected and analyzed by histologic, quantitative real-time polymerase chain reaction, and immunoblot analyses. Hepatic P450 enzymatic activities were measured. RESULTS Flvcr1a(fl/fl);alb-cre mice accumulated heme and iron in liver despite up-regulation of heme oxygenase 1, ferroportin, and ferritins. Hepatic heme export activity of Flvcr1a was closely associated with heme biosynthesis, which is required to sustain cytochrome induction. Upon cytochromes P450 stimulation, Flvcr1a(fl/fl);alb-cre mice had reduced cytochrome activity, associated with accumulation of heme in hepatocytes. The expansion of the cytosolic heme pool in these mice was likely responsible for the early inhibition of heme synthesis and increased degradation of heme, which reduced expression and activity of cytochromes P450. CONCLUSIONS In livers of mice, Flvcr1a maintains a free heme pool that regulates heme synthesis and degradation as well as cytochromes P450 expression and activity. These findings have important implications for drug metabolism.
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Affiliation(s)
| | | | | | | | | | | | | | - Emanuela Tolosano
- Molecular Biotechnology Center and Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.
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Rusconi F, Paganini L, Braida D, Ponzoni L, Toffolo E, Maroli A, Landsberger N, Bedogni F, Turco E, Pattini L, Altruda F, De Biasi S, Sala M, Battaglioli E. LSD1 Neurospecific Alternative Splicing Controls Neuronal Excitability in Mouse Models of Epilepsy. Cereb Cortex 2014; 25:2729-40. [PMID: 24735673 DOI: 10.1093/cercor/bhu070] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Alternative splicing in the brain is dynamic and instrumental to adaptive changes in response to stimuli. Lysine-specific demethylase 1 (LSD1/KDM1A) is a ubiquitously expressed histone H3Lys4 demethylase that acts as a transcriptional co-repressor in complex with its molecular partners CoREST and HDAC1/2. In mammalian brain, alternative splicing of LSD1 mini-exon E8a gives rise to neuroLSD1, a neurospecific isoform that, upon phosphorylation, acts as a dominant-negative causing disassembly of the co-repressor complex and de-repression of target genes. Here we show that the LSD1/neuroLSD1 ratio changes in response to neuronal activation and such effect is mediated by neurospecific splicing factors NOVA1 and nSR100/SRRM4 together with a novel cis-silencer. Indeed, we found that, in response to epileptogenic stimuli, downregulation of NOVA1 reduces exon E8a splicing and expression of neuroLSD1. Using behavioral and EEG analyses we observed that neuroLSD1-specific null mice are hypoexcitable and display decreased seizure susceptibility. Conversely, in a mouse model of Rett syndrome characterized by hyperexcitability, we measured higher levels of NOVA1 protein and upregulation of neuroLSD1. In conclusion, we propose that, in the brain, correct ratio between LSD1 and neuroLSD1 contributes to excitability and, when altered, could represent a pathogenic event associated with neurological disorders involving altered E/I.
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Affiliation(s)
| | - Leda Paganini
- Department of Medical Biotechnology and Translational Medicine
| | - Daniela Braida
- Department of Medical Biotechnology and Translational Medicine
| | - Luisa Ponzoni
- Department of Medical Biotechnology and Translational Medicine
| | | | - Annalisa Maroli
- Department of Medical Biotechnology and Translational Medicine
| | - Nicoletta Landsberger
- Theoretical and Applied Sciences, Division of Biomedical Research, University of Insubria, Busto Arsizio 21052, Italy San Raffaele Rett Research Center, Division of Neuroscience, San Raffaele Scientific Institute, Milan 20132, Italy
| | - Francesco Bedogni
- San Raffaele Rett Research Center, Division of Neuroscience, San Raffaele Scientific Institute, Milan 20132, Italy
| | - Emilia Turco
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università Degli Studi di Torino, Turin 10126, Italy
| | - Linda Pattini
- Dipartimento di Elettronica, Informazione e Bioingegneria-Politecnico di Milano, Milan, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, Università Degli Studi di Torino, Turin 10126, Italy
| | - Silvia De Biasi
- Department of Biosciences, Università Degli Studi di Milano, Milan 20122, Italy
| | - Mariaelvina Sala
- Department of Medical Biotechnology and Translational Medicine CNR, Institute of Neuroscience, Milan, Italy
| | - Elena Battaglioli
- Department of Medical Biotechnology and Translational Medicine CNR, Institute of Neuroscience, Milan, Italy
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37
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Maccarinelli F, Gammella E, Asperti M, Regoni M, Biasiotto G, Turco E, Altruda F, Lonardi S, Cornaghi L, Donetti E, Recalcati S, Poli M, Finazzi D, Arosio P, Cairo G. Mice lacking mitochondrial ferritin are more sensitive to doxorubicin-mediated cardiotoxicity. J Mol Med (Berl) 2014; 92:859-69. [PMID: 24728422 PMCID: PMC4118045 DOI: 10.1007/s00109-014-1147-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 02/09/2014] [Accepted: 03/18/2014] [Indexed: 10/26/2022]
Abstract
UNLABELLED Mitochondrial ferritin is a functional ferritin that localizes in the mitochondria. It is expressed in the testis, heart, brain, and cells with active respiratory activity. Its overexpression in cultured cells protected against oxidative damage and reduced cytosolic iron availability. However, no overt phenotype was described in mice with inactivation of the FtMt gene. Here, we used the doxorubicin model of cardiac injury in a novel strain of FtMt-null mice to investigate the antioxidant role of FtMt. These mice did not show any evident phenotype, but after acute treatment to doxorubicin, they showed enhanced mortality and altered heart morphology with fibril disorganization and severe mitochondrial damage. Signs of mitochondrial damage were present also in mock-treated FtMt(-/-) mice. The hearts of saline- and doxorubicin-treated FtMt(-/-) mice had higher thiobarbituric acid reactive substance levels, heme oxygenase 1 expression, and protein oxidation, but did not differ from FtMt(+/+) in the cardiac damage marker B-type natriuretic peptide (BNP), ATP levels, and apoptosis. However, the autophagy marker LC3 was activated. The results show that the absence of FtMt, which is highly expressed in the heart, increases the sensitivity of heart mitochondria to the toxicity of doxorubicin. This study represents the first in vivo evidence of the antioxidant role of FtMt. KEY MESSAGE Mitochondrial ferritin (FtMt) expressed in the heart has a protective antioxidant role. Acute treatment with doxorubicin caused the death of all FtMt(-/-) and only of 60 % FtMt(+/+) mice. The hearts of FtMt(-/-) mice showed fibril disorganization and mitochondrial damage. Markers of oxidative damage and autophagy were increased in FtMt(-/-) hearts. This is the first in vivo evidence of the antioxidant role of FtMt.
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Affiliation(s)
- Federica Maccarinelli
- Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123, Brescia, Italy
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38
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Vallée A, Faga MG, Mussano F, Catalano F, Tolosano E, Carossa S, Altruda F, Martra G. Alumina-zirconia composites functionalized with laminin-1 and laminin-5 for dentistry: effect of protein adsorption on cellular response. Colloids Surf B Biointerfaces 2014; 114:284-93. [PMID: 24216619 DOI: 10.1016/j.colsurfb.2013.09.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 09/23/2013] [Accepted: 09/26/2013] [Indexed: 12/30/2022]
Abstract
The present paper describes a study on laminin interaction with the surface of two alumina-zirconia composites with different percentages of ZrO2, both with submicrometric grain size. As major molecules within the basement membrane (BM), laminins are important protein fragments for epithelial cell adhesion and migration. On the other hand, alumina-zirconia composites are very attractive materials for dental applications due to their esthetic and mechanical properties. X-Ray photoelectron spectroscopy and atomic force microscopy were used to study the adsorption of two types of laminin, laminin-1 (Ln-1) and laminin-5 (Ln-5), onto the ceramics surfaces. The in vitro cell response was determined by intracellular phosphorylation of major kinases. Ceramics samples functionalized with laminins showed better cellular activation than untreated specimens; furthermore, cellular activation was found to be greater for the composite with higher percentage in zirconia when functionalized with Ln-5, whereas the adsorption of Ln-1 resulted in a greater activation for the alumina-rich oxide.
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Affiliation(s)
- A Vallée
- Chemistry Department and NIS Excellence Centre, Università degli Studi di Torino, Via P. Giuria 7, 10125 Turin, Italy.
| | - M G Faga
- CNR-IMAMOTER, Strada delle Cacce 73, 10135 Turin, Italy
| | - F Mussano
- Department of Surgery, Dental School, Università degli Studi di Torino, Via Nizza 230, 10126 Turin, Italy
| | - F Catalano
- Chemistry Department and NIS Excellence Centre, Università degli Studi di Torino, Via P. Giuria 7, 10125 Turin, Italy
| | - E Tolosano
- Molecular Biotechnology Center, Università degli Studi di Torino, Via Nizza 52, 10126 Turin, Italy
| | - S Carossa
- Department of Surgery, Dental School, Università degli Studi di Torino, Via Nizza 230, 10126 Turin, Italy
| | - F Altruda
- Molecular Biotechnology Center, Università degli Studi di Torino, Via Nizza 52, 10126 Turin, Italy
| | - G Martra
- Chemistry Department and NIS Excellence Centre, Università degli Studi di Torino, Via P. Giuria 7, 10125 Turin, Italy
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Lorenzo N, Cantera D, Barberá A, Alonso A, Chall E, Franco L, Ancizar J, Nuñez Y, Altruda F, Silengo L, Padrón G, Del Carmen Dominguez M. APL-2, an altered peptide ligand derived from heat-shock protein 60, induces interleukin-10 in peripheral blood mononuclear cell derived from juvenile idiopathic arthritis patients and downregulates the inflammatory response in collagen-induced arthritis model. Clin Exp Med 2014; 15:31-9. [PMID: 24474501 DOI: 10.1007/s10238-014-0273-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 01/15/2014] [Indexed: 11/29/2022]
Abstract
Juvenile idiopathic arthritis (JIA) is a heterogeneous group of diseases characterized by autoimmune arthritis of unknown cause with onset before age of 16 years. Methotrexate provides clinical benefits in JIA. For children who do not respond to methotrexate, treatment with anti-tumor necrosis factor (TNF)-α is an option. However, some patients do not respond or are intolerant to anti-TNF therapy. Induction of peripheral tolerance has long been considered a promising approach to the treatment of chronic autoimmune diseases. We aimed to evaluate the potentialities of two altered peptide ligands (APLs) derived from human heat-shock protein 60, an autoantigen involved in the pathogenesis of autoimmune arthritis, in JIA patients. Interferon (IFN)-γ, TNF-α and interleukin (IL)-10 levels were determined in ex vivo assays using peripheral blood mononuclear cells (PBMC) from these patients. Wild-type peptide and one of these APLs increased IFN-γ and TNF-α levels. Unlike, the other APLs (called APL2) increased the IL-10 level without affecting IFN-γ and TNF-α levels. On the other hand, APL2 induces a marked activation of T cells since it transforms cell cycle phase's distribution of CD4+ T cells from these patients. In addition, we evaluated the therapeutic effect of APL2 in collagen-induced arthritis model. Therapy with APL2 reduced arthritis scores and histological lesions in mice. This effect was associated to a decrease in TNF-α and IL-17 levels. These results indicate a therapeutic potentiality of APL2 for JIA.
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Affiliation(s)
- Norailys Lorenzo
- Biomedical Research Department, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, 10600, Havana, Cuba,
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Fagoonee S, Li H, Zhang H, Altruda F, Pellicano R. Gastric cancer as a stem-cell disease: data and hypotheses. Panminerva Med 2014; 56:289-300. [PMID: 25703444] [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: 06/04/2023]
Abstract
The main function of gastric stem cells is to maintain the integrity of the gastrointestinal epithelium and replenish all the mature cell lineages. In order to accomplish this, gastric stem cells proliferate and self-renew, giving rise to transient amplifying cells which replace the constantly renewing epithelium, especially after injury induced by long-term inflammation. Gastric cancer (GC) remains the fourth most common cancer and the second leading cause of death for cancer in the world. The most accepted model of gastric carcinogenesis provides a multifactorial and multistep pathogenesis, involving a number of initiators and other continuator agents. Helicobacter pylori infection is recognized as a necessary but insufficient cause of GC. Recent advances in gastric stem cell biology point out to two hypotheses. In the first, it is postulated that resident stem cells may, in a chronically inflamed environment, as in the case of Helicobacter pylori-induced gastritis, accumulate over time a series of genetic and epigenetic changes that lead to the emergence of GC stem cells. Alternatively, the setting of chronic inflammatory stress may lead to loss of the indigenous gastric stem cells from their niches, followed by recruitment and engraftment of bone marrow derived stem cells (BMDCs) into the gastric epithelium. In the mouse model, increasing evidence supports the hypothesis that BMDCs are important cellular source of Helicobacter-induced GC. This review highlights data and hypotheses about GC as a model of stem-cell disease.
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Affiliation(s)
- S Fagoonee
- Institute for Biostructures and Bioimages-CNR c/o Molecular Biotechnology Center,University of Turin, Turin, Italy -
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41
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Rolla S, Ingoglia G, Bardina V, Silengo L, Altruda F, Novelli F, Tolosano E. Acute-phase protein hemopexin is a negative regulator of Th17 response and experimental autoimmune encephalomyelitis development. J Immunol 2013; 191:5451-9. [PMID: 24154625 DOI: 10.4049/jimmunol.1203076] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Hemopexin (Hx) is an acute-phase protein synthesized by hepatocytes in response to the proinflammatory cytokines IL-6, IL-1β, and TNF-α. Hx is the plasma protein with the highest binding affinity to heme and controls heme-iron availability in tissues and also in T lymphocytes, where it modulates their responsiveness to IFN-γ. Recent data have questioned regarding an anti-inflammatory role of Hx, a role that may be both heme-binding dependent and independent. The aim of this study was to investigate the role of Hx in the development of a T cell-mediated inflammatory autoimmune response. During experimental autoimmune encephalomyelitis (EAE), the mouse model of multiple sclerosis, Hx content in serum increased and remained high. When EAE was induced in Hx knockout (Hx(-/-)) mice, they developed a clinically earlier and exacerbated EAE compared with wild-type mice, associated to a higher amount of CD4(+)-infiltrating T cells. The severe EAE developed by Hx(-/-) mice could be ascribed to an enhanced expansion of Th17 cells accounting for both a higher disposition of naive T cells to differentiate toward the Th17 lineage and a higher production of Th17 differentiating cytokines IL-6 and IL-23 by APCs. When purified human Hx was injected in Hx(-/-) mice before EAE induction, Th17 expansion, as well as disease severity, were comparable with those of wild-type mice. Taken together, these data indicate that Hx has a negative regulatory role in Th17-mediated inflammation and prospect its pharmacological use to limit the expansion of this cell subset in inflammatory and autoimmune disease.
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Affiliation(s)
- Simona Rolla
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
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42
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De Chiara L, Fagoonee S, Ranghino A, Bruno S, Camussi G, Tolosano E, Silengo L, Altruda F. Renal cells from spermatogonial germline stem cells protect against kidney injury. J Am Soc Nephrol 2013; 25:316-28. [PMID: 24136918 DOI: 10.1681/asn.2013040367] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Spermatogonial stem cells reside in specific niches within seminiferous tubules and continuously generate differentiating daughter cells for production of spermatozoa. Although spermatogonial stem cells are unipotent, these cells are able to spontaneously convert to germline cell-derived pluripotent stem cells (GPSCs) in vitro. GPSCs have many properties of embryonic stem cells and are highly plastic, but their therapeutic potential in tissue regeneration has not been fully explored. Using a novel renal epithelial differentiation protocol, we obtained GPSC-derived tubular-like cells (GTCs) that were functional in vitro, as demonstrated through transepithelial electrical resistance analysis. In mice, GTCs injected after ischemic renal injury homed to the renal parenchyma, and GTC-treated mice showed reduced renal oxidative stress, tubular apoptosis, and cortical damage and upregulated tubular expression of the antioxidant enzyme hemeoxygenase-1. Six weeks after ischemic injury, kidneys of GTC-treated mice had less fibrosis and inflammatory infiltrate than kidneys of vehicle-treated mice. In conclusion, we show that GPSCs can be differentiated into functionally active renal tubular-like cells that therapeutically prevent chronic ischemic damage in vivo, introducing the potential utility of GPSCs in regenerative cell therapy.
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Affiliation(s)
- Letizia De Chiara
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, and
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43
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Vinchi F, De Franceschi L, Ghigo A, Townes T, Cimino J, Silengo L, Hirsch E, Altruda F, Tolosano E. Hemopexin therapy improves cardiovascular function by preventing heme-induced endothelial toxicity in mouse models of hemolytic diseases. Circulation 2013; 127:1317-29. [PMID: 23446829 DOI: 10.1161/circulationaha.112.130179] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Hemolytic diseases are characterized by enhanced intravascular hemolysis resulting in heme-catalyzed reactive oxygen species generation, which leads to endothelial dysfunction and oxidative damage. Hemopexin (Hx) is a plasma heme scavenger able to prevent endothelial damage and tissue congestion in a model of heme overload. Here, we tested whether Hx could be used as a therapeutic tool to counteract heme toxic effects on the cardiovascular system in hemolytic diseases. METHODS AND RESULTS By using a model of heme overload in Hx-null mice, we demonstrated that heme excess in plasma, if not bound to Hx, promoted the production of reactive oxygen species and the induction of adhesion molecules and caused the reduction of nitric oxide availability. Then, we used β-thalassemia and sickle cell disease mice as models of hemolytic diseases to evaluate the efficacy of an Hx-based therapy in the treatment of vascular dysfunction related to heme overload. Our data demonstrated that Hx prevented heme-iron loading in the cardiovascular system, thus limiting the production of reactive oxygen species, the induction of adhesion molecules, and the oxidative inactivation of nitric oxide synthase/nitric oxide, and promoted heme recovery and detoxification by the liver mainly through the induction of heme oxygenase activity. Moreover, we showed that in sickle cell disease mice, endothelial activation and oxidation were associated with increased blood pressure and altered cardiac function, and the administration of exogenous Hx was found to almost completely normalize these parameters. CONCLUSIONS Hemopexin treatment is a promising novel therapy to protect against heme-induced cardiovascular dysfunction in hemolytic disorders.
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Affiliation(s)
- Francesca Vinchi
- Molecular Biotechnology Center and Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
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44
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Chiabrando D, Fiorito V, Marro S, Silengo L, Altruda F, Tolosano E. Cell-specific regulation of Ferroportin transcription following experimentally-induced acute anemia in mice. Blood Cells Mol Dis 2013; 50:25-30. [DOI: 10.1016/j.bcmd.2012.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 08/03/2012] [Accepted: 08/03/2012] [Indexed: 12/17/2022]
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45
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Chiabrando D, Marro S, Mercurio S, Giorgi C, Petrillo S, Vinchi F, Fiorito V, Fagoonee S, Camporeale A, Turco E, Merlo GR, Silengo L, Altruda F, Pinton P, Tolosano E. The mitochondrial heme exporter FLVCR1b mediates erythroid differentiation. J Clin Invest 2012. [PMID: 23187127 DOI: 10.1172/jci62422] [Citation(s) in RCA: 140] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Feline leukemia virus subgroup C receptor 1 (FLVCR1) is a cell membrane heme exporter that maintains the balance between heme levels and globin synthesis in erythroid precursors. It was previously shown that Flvcr1-null mice died in utero due to a failure of erythropoiesis. Here, we identify Flvcr1b, a mitochondrial Flvcr1 isoform that promotes heme efflux into the cytoplasm. Flvcr1b overexpression promoted heme synthesis and in vitro erythroid differentiation, whereas silencing of Flvcr1b caused mitochondrial heme accumulation and termination of erythroid differentiation. Furthermore, mice lacking the plasma membrane isoform (Flvcr1a) but expressing Flvcr1b had normal erythropoiesis, but exhibited hemorrhages, edema, and skeletal abnormalities. Thus, FLVCR1b regulates erythropoiesis by controlling mitochondrial heme efflux, whereas FLVCR1a expression is required to prevent hemorrhages and edema. The aberrant expression of Flvcr1 isoforms may play a role in the pathogenesis of disorders characterized by an imbalance between heme and globin synthesis.
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Affiliation(s)
- Deborah Chiabrando
- Molecular Biotechnology Centre, Department of Genetics, Biology and Biochemistry, University of Torino, Torino, Italy
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46
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Hobbs RM, Fagoonee S, Papa A, Webster K, Altruda F, Nishinakamura R, Chai L, Pandolfi PP. Functional antagonism between Sall4 and Plzf defines germline progenitors. Cell Stem Cell 2012; 10:284-98. [PMID: 22385656 DOI: 10.1016/j.stem.2012.02.004] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 12/05/2011] [Accepted: 02/07/2012] [Indexed: 12/23/2022]
Abstract
Transcription factors required for formation of embryonic tissues often maintain their expression in adult stem cell populations, but whether their function remains equivalent is not clear. Here we demonstrate critical and distinct roles for Sall4 in development of embryonic germ cells and differentiation of postnatal spermatogonial progenitor cells (SPCs). In differentiating SPCs, Sall4 levels transiently increase and Sall4 physically interacts with Plzf, a transcription factor exclusively required for adult stem cell maintenance. Mechanistically, Sall4 sequesters Plzf to noncognate chromatin domains to induce expression of Kit, a target of Plzf-mediated repression required for differentiation. Plzf in turn antagonizes Sall4 function by displacing Sall4 from cognate chromatin to induce Sall1 expression. Taken together, these data suggest that transcription factors required for embryonic tissue development postnatally take on distinct roles through interaction with opposing factors, which hence define properties of the adult stem cell compartment.
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Affiliation(s)
- Robin M Hobbs
- Cancer Genetics Program, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
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47
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Lorenzo N, Barberá A, Domínguez MC, Torres AM, Hernandez MV, Hernandez I, Gil R, Ancizar J, Garay H, Reyes O, Altruda F, Silengo L, Padrón G. Therapeutic effect of an altered peptide ligand derived from heat-shock protein 60 by suppressing of inflammatory cytokines secretion in two animal models of rheumatoid arthritis. Autoimmunity 2012; 45:449-59. [PMID: 22686732 DOI: 10.3109/08916934.2012.697592] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Rheumatoid arthritis is a systemic autoimmune disease mediated by T cells. Productive engagement of T cell receptors by major histocompatibility complex-peptide leads to proliferation, differentiation and the definition of effector functions. Altered peptide ligands (APL) generated by amino acid substitutions in the antigenic peptide have diverse effects on T cell response. We predicted a novel T cell epitope from human heat-shock protein 60, an autoantigen involved in the pathogenesis of rheumatoid arthritis. Three APLs were designed from this epitope and it was demonstrated that these peptides induce the activation of T cells through their ability to modify cell cycle phase's distribution of CD4+T cells from RA patients. Also, IL-17, TNF-α and IL-10 levels were determined in PBMC from these patients. Unlike the wild-type peptide and the other two APLs, APL2 increased the IL-10 level and suppressed IL-17 secretion in these assays. Therapeutic effect of this APL in adjuvant arthritis (AA) and collagen-induced arthritis (CIA) models was also evaluated. Clinical score, histopathology, inflammatory and regulatory cytokine concentration were monitored in the animals. APL2 efficiently inhibited the progression of AA and CIA with a significant reduction of the clinical and histopathologic score. Therapeutic effect of APL2 on CIA was similar to that obtained with MTX; the standard treatment for RA. This effect was associated with a decrease of TNF-α and IL-17 levels. These results suggest that the therapeutic effect of APL2 is mediated in part by down-regulation of inflammatory cytokines and support the potential use of APL2 as a therapeutic drug in RA patients.
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Affiliation(s)
- N Lorenzo
- Biomedical Research Department, Center for Genetic Engineering and Biotechnology, Havana, Cuba.
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48
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Perino A, Ghigo A, Ferrero E, Morello F, Santulli G, Baillie GS, Damilano F, Dunlop AJ, Pawson C, Walser R, Levi R, Altruda F, Silengo L, Langeberg LK, Neubauer G, Heymans S, Lembo G, Wymann MP, Wetzker R, Houslay MD, Iaccarino G, Scott JD, Hirsch E. Integrating cardiac PIP3 and cAMP signaling through a PKA anchoring function of p110γ. Mol Cell 2011; 42:84-95. [PMID: 21474070 DOI: 10.1016/j.molcel.2011.01.030] [Citation(s) in RCA: 136] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 12/20/2010] [Accepted: 01/24/2011] [Indexed: 01/08/2023]
Abstract
Adrenergic stimulation of the heart engages cAMP and phosphoinositide second messenger signaling cascades. Cardiac phosphoinositide 3-kinase p110γ participates in these processes by sustaining β-adrenergic receptor internalization through its catalytic function and by controlling phosphodiesterase 3B (PDE3B) activity via an unknown kinase-independent mechanism. We have discovered that p110γ anchors protein kinase A (PKA) through a site in its N-terminal region. Anchored PKA activates PDE3B to enhance cAMP degradation and phosphorylates p110γ to inhibit PIP(3) production. This provides local feedback control of PIP(3) and cAMP signaling events. In congestive heart failure, p110γ is upregulated and escapes PKA-mediated inhibition, contributing to a reduction in β-adrenergic receptor density. Pharmacological inhibition of p110γ normalizes β-adrenergic receptor density and improves contractility in failing hearts.
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Affiliation(s)
- Alessia Perino
- Department of Genetics, Biology and Biochemistry, Molecular Biotechnology Center, University of Torino, Torino 10126, Italy
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Morello N, Bianchi FT, Marmiroli P, Tonoli E, Rodriguez Menendez V, Silengo L, Cavaletti G, Vercelli A, Altruda F, Tolosano E. A role for hemopexin in oligodendrocyte differentiation and myelin formation. PLoS One 2011; 6:e20173. [PMID: 21633699 PMCID: PMC3102107 DOI: 10.1371/journal.pone.0020173] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Accepted: 04/15/2011] [Indexed: 12/27/2022] Open
Abstract
Myelin formation and maintenance are crucial for the proper function of the CNS and are orchestrated by a plethora of factors including growth factors, extracellular matrix components, metalloproteases and protease inhibitors. Hemopexin (Hx) is a plasma protein with high heme binding affinity, which is also locally produced in the CNS by ependymal cells, neurons and glial cells. We have recently reported that oligodendrocytes (OLs) are the type of cells in the brain that are most susceptible to lack of Hx, as the number of iron-overloaded OLs increases in Hx-null brain, leading to oxidative tissue damage. In the current study, we found that the expression of the Myelin Basic Protein along with the density of myelinated fibers in the basal ganglia and in the motor and somatosensory cortex of Hx-null mice were strongly reduced starting at 2 months and progressively decreased with age. Myelin abnormalities were confirmed by electron microscopy and, at the functional level, resulted in the inability of Hx-null mice to perform efficiently on the Rotarod. It is likely that the poor myelination in the brain of Hx-null mice was a consequence of defective maturation of OLs as we demonstrated that the number of mature OLs was significantly reduced in mutant mice whereas that of precursor cells was normal. Finally, in vitro experiments showed that Hx promotes OL differentiation. Thus, Hx may be considered a novel OL differentiation factor and the modulation of its expression in CNS may be an important factor in the pathogenesis of human neurodegenerative disorders.
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Affiliation(s)
- Noemi Morello
- Molecular Biotechnology Center, University of
Turin, Turin, Italy
| | | | - Paola Marmiroli
- Department of Neuroscience and Biomedical
Technologies, University of Milan Bicocca, Monza, Italy
| | - Elisabetta Tonoli
- Neuroscience Institute of Turin, Department of
Anatomy, Pharmacology and Forensic Medicine, University of Turin, Turin,
Italy
| | | | - Lorenzo Silengo
- Molecular Biotechnology Center, University of
Turin, Turin, Italy
| | - Guido Cavaletti
- Department of Neuroscience and Biomedical
Technologies, University of Milan Bicocca, Monza, Italy
| | - Alessandro Vercelli
- Neuroscience Institute of Turin, Department of
Anatomy, Pharmacology and Forensic Medicine, University of Turin, Turin,
Italy
| | - Fiorella Altruda
- Molecular Biotechnology Center, University of
Turin, Turin, Italy
| | - Emanuela Tolosano
- Molecular Biotechnology Center, University of
Turin, Turin, Italy
- * E-mail:
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Canavese M, Altruda F, Silengo L, Castiglioni V, Scanziani E, Radaelli E. Clinical, pathological and immunological features of psoriatic-like lesions affecting keratin 14-vascular endothelial growth factor transgenic mice. Histol Histopathol 2011; 26:285-96. [PMID: 21210341 DOI: 10.14670/hh-26.285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Up-regulation of vascular endothelial growth factor (VEGF) plays a primary role in the pathogenesis of psoriasis. Transgenic mice over-expressing VEGF under the Keratin 14 (K14) promoter develop an inflammatory skin condition with many of the pathobiological features of human psoriasis. In this work, the development of spontaneous psoriatic-like dermatitis in K14-VEGF transgenic mice was monitored from week 6 to week 44 and skin lesions were characterized clinically (application of a clinical score system comparable to the human Psoriasis Area and Severity Index), microscopically (histopathology, leukocyte subset and neoangiogensis) and immunologically (evaluation of local and systemic cytokine/chemokine profiles). Based on PASI score system, three progressive clinical phases were identified: mild acute (8-14 weeks of age), moderate subacute (15-21 weeks of age) and severe chronic-active (22-44 weeks of age) dermatitis. Microscopically, skin lesions consisted of progressive proliferative psoriatic-like dermatitis dominated by dermo-epidermal infiltrates of CD3-positive lymphocytes, an increased number of mast cells and neoangiogenesis. Both local and systemic up-regulation of pro-inflammatory (IL-12, TNF-alpha, IL-6, MCP-1 and IL-8) and regulatory (IL-10) cytokines/chemokines was observed, mainly during the later stages of disease development. The results obtained in this study further confirm the central role of VEGF over-expression in the development of psoriatic-like dermatitis. Similarly to what is reported for human psoriasis, both the local and systemic immunologic profiles observed in K14-VEGF transgenic mice suggest that a combined Th1 and Th17 response may be implicated in lesion development. The identification of three progressive stages of disease, each with peculiar clinicopathological features, renders the K14-VEGF transgenic mouse a valuable model to study novel immunotherapies for psoriasis.
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Affiliation(s)
- M Canavese
- Department of Genetic, Biology and Biochemistry, University of Torino, Italy.
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