1
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Lavatelli F, Natalello A, Marchese L, Ami D, Corazza A, Raimondi S, Mimmi MC, Malinverni S, Mangione PP, Palmer MT, Lampis A, Concardi M, Verona G, Canetti D, Arbustini E, Bellotti V, Giorgetti S. Truncation of the constant domain drives amyloid formation by immunoglobulin light chains. J Biol Chem 2024; 300:107174. [PMID: 38499153 PMCID: PMC11016911 DOI: 10.1016/j.jbc.2024.107174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/07/2024] [Accepted: 03/11/2024] [Indexed: 03/20/2024] Open
Abstract
AL amyloidosis is a life-threatening disease caused by deposition of immunoglobulin light chains. While the mechanisms underlying light chains amyloidogenesis in vivo remain unclear, several studies have highlighted the role that tissue environment and structural amyloidogenicity of individual light chains have in the disease pathogenesis. AL natural deposits contain both full-length light chains and fragments encompassing the variable domain (VL) as well as different length segments of the constant region (CL), thus highlighting the relevance that proteolysis may have in the fibrillogenesis pathway. Here, we investigate the role of major truncated species of the disease-associated AL55 light chain that were previously identified in natural deposits. Specifically, we study structure, molecular dynamics, thermal stability, and capacity to form fibrils of a fragment containing both the VL and part of the CL (133-AL55), in comparison with the full-length protein and its variable domain alone, under shear stress and physiological conditions. Whereas the full-length light chain forms exclusively amorphous aggregates, both fragments generate fibrils, although, with different kinetics, aggregate structure, and interplay with the unfragmented protein. More specifically, the VL-CL 133-AL55 fragment entirely converts into amyloid fibrils microscopically and spectroscopically similar to their ex vivo counterpart and increases the amorphous aggregation of full-length AL55. Overall, our data support the idea that light chain structure and proteolysis are both relevant for amyloidogenesis in vivo and provide a novel biocompatible model of light chain fibrillogenesis suitable for future mechanistic studies.
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Affiliation(s)
- Francesca Lavatelli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy; Research Area, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
| | - Antonino Natalello
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.
| | - Loredana Marchese
- Pathology Unit, Fondazione IRCSS Policlinico San Matteo, Pavia, Italy
| | - Diletta Ami
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Alessandra Corazza
- Department of Medicine (DAME), University of Udine, Udine, Italy; Istituto Nazionale Biostrutture e Biosistemi, Roma, Italy
| | - Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Maria Chiara Mimmi
- Transplant Research Area and Centre for Inherited Cardiovascular Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Silvia Malinverni
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - P Patrizia Mangione
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy; Research Area, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Manel Terrones Palmer
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Alessio Lampis
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Monica Concardi
- Transplant Research Area and Centre for Inherited Cardiovascular Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Guglielmo Verona
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy; Centre for Amyloidosis, Division of Medicine, University College London, London, UK
| | - Diana Canetti
- Centre for Amyloidosis, Division of Medicine, University College London, London, UK
| | - Eloisa Arbustini
- Transplant Research Area and Centre for Inherited Cardiovascular Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Vittorio Bellotti
- Research Area, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy; Research Area, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
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2
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Verona G, Raimondi S, Canetti D, Mangione PP, Marchese L, Corazza A, Lavatelli F, Gillmore JD, Taylor GW, Bellotti V, Giorgetti S. Degradation versus fibrillogenesis, two alternative pathways modulated by seeds and glycosaminoglycans. Protein Sci 2024; 33:e4931. [PMID: 38380705 PMCID: PMC10880434 DOI: 10.1002/pro.4931] [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: 10/10/2023] [Revised: 01/19/2024] [Accepted: 01/31/2024] [Indexed: 02/22/2024]
Abstract
The mechanism that converts native human transthyretin into amyloid fibrils in vivo is still a debated and controversial issue. Commonly, non-physiological conditions of pH, temperature, or organic solvents are used in in vitro models of fibrillogenesis of globular proteins. Transthyretin amyloid formation can be achieved under physiological conditions through a mechano-enzymatic mechanism involving specific serine proteases such as trypsin or plasmin. Here, we investigate S52P and L111M transthyretin variants, both causing a severe form of systemic amyloidosis mostly targeting the heart at a relatively young age with heterogeneous phenotype among patients. Our studies on thermodynamics show that both proteins are significantly less stable than other amyloidogenic variants. However, despite a similar thermodynamic stability, L111M variant seems to have enhanced susceptibility to cleavage and a lower tendency to form fibrils than S52P in the presence of specific proteases and biomechanical forces. Heparin strongly enhances the fibrillogenic capacity of L111M transthyretin, but has no effect on the S52P variant. Fibrillar seeds similarly affect the fibrillogenesis of both proteins, with a stronger effect on the L111M variant. According to our model of mechano-enzymatic fibrillogenesis, both full-length and truncated monomers, released after the first cleavage, can enter into fibrillogenesis or degradation pathways. Our findings show that the kinetics of the two processes can be affected by several factors, such as intrinsic amyloidogenicity due to the specific mutations, environmental factors including heparin and fibrillar seeds that significantly accelerate the fibrillogenic pathway.
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Affiliation(s)
- Guglielmo Verona
- Centre for AmyloidosisUniversity College LondonLondonUK
- Department of Molecular MedicineUniversity of PaviaPaviaItaly
| | - Sara Raimondi
- Department of Molecular MedicineUniversity of PaviaPaviaItaly
| | - Diana Canetti
- Centre for AmyloidosisUniversity College LondonLondonUK
| | - P. Patrizia Mangione
- Department of Molecular MedicineUniversity of PaviaPaviaItaly
- Research DepartmentFondazione IRCCS Policlinico San MatteoPaviaItaly
| | | | - Alessandra Corazza
- Department of Medicine (DAME)University of UdineUdineItaly
- Istituto Nazionale Biostrutture e BiosistemiRomeItaly
| | - Francesca Lavatelli
- Department of Molecular MedicineUniversity of PaviaPaviaItaly
- Research DepartmentFondazione IRCCS Policlinico San MatteoPaviaItaly
| | | | | | - Vittorio Bellotti
- Research DepartmentFondazione IRCCS Policlinico San MatteoPaviaItaly
| | - Sofia Giorgetti
- Department of Molecular MedicineUniversity of PaviaPaviaItaly
- Research DepartmentFondazione IRCCS Policlinico San MatteoPaviaItaly
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3
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Raimondi S, Faravelli G, Nocerino P, Mondani V, Baruffaldi A, Marchese L, Mimmi MC, Canetti D, Verona G, Caterino M, Ruoppolo M, Mangione PP, Bellotti V, Lavatelli F, Giorgetti S. Human wild-type and D76N β 2-microglobulin variants are significant proteotoxic and metabolic stressors for transgenic C. elegans. FASEB Bioadv 2023; 5:484-505. [PMID: 37936921 PMCID: PMC10626158 DOI: 10.1096/fba.2023-00073] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/21/2023] [Accepted: 10/12/2023] [Indexed: 11/09/2023] Open
Abstract
β2-microglobulin (β2-m) is a plasma protein derived from physiological shedding of the class I major histocompatibility complex (MHCI), causing human systemic amyloidosis either due to persistently high concentrations of the wild-type (WT) protein in hemodialyzed patients, or in presence of mutations, such as D76N β2-m, which favor protein deposition in the adulthood, despite normal plasma levels. Here we describe a new transgenic Caenorhabditis elegans (C. elegans) strain expressing human WT β2-m at high concentrations, mimicking the condition that underlies dialysis-related amyloidosis (DRA) and we compare it to a previously established strain expressing the highly amyloidogenic D76N β2-m at lower concentrations. Both strains exhibit behavioral defects, the severity of which correlates with β2-m levels rather than with the presence of mutations, being more pronounced in WT β2-m worms. β2-m expression also has a deep impact on the nematodes' proteomic and metabolic profiles. Most significantly affected processes include protein degradation and stress response, amino acids metabolism, and bioenergetics. Molecular alterations are more pronounced in worms expressing WT β2-m at high concentration compared to D76N β2-m worms. Altogether, these data show that β2-m is a proteotoxic protein in vivo also in its wild-type form, and that concentration plays a key role in modulating pathogenicity. Our transgenic nematodes recapitulate the distinctive features subtending DRA compared to hereditary β2-m amyloidosis (high levels of non-mutated β2-m vs. normal levels of variant β2-m) and provide important clues on the molecular bases of these human diseases.
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Affiliation(s)
- Sara Raimondi
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
| | - Giulia Faravelli
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
| | - Paola Nocerino
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
| | - Valentina Mondani
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
| | - Alma Baruffaldi
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
| | - Loredana Marchese
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
- Research Department Fondazione IRCCS Policlinico San MatteoPaviaItaly
| | - Maria Chiara Mimmi
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
| | - Diana Canetti
- Centre for Amyloidosis, Division of MedicineUniversity College LondonLondonUK
| | - Guglielmo Verona
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
- Centre for Amyloidosis, Division of MedicineUniversity College LondonLondonUK
| | - Marianna Caterino
- Department of Molecular Medicine and Medical BiotechnologyUniversity of Naples "Federico II"NaplesItaly
- CEINGE – Biotecnologie Avanzate s.c.a.r.l.NaplesItaly
| | - Margherita Ruoppolo
- Department of Molecular Medicine and Medical BiotechnologyUniversity of Naples "Federico II"NaplesItaly
- CEINGE – Biotecnologie Avanzate s.c.a.r.l.NaplesItaly
| | - P. Patrizia Mangione
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
- Research Department Fondazione IRCCS Policlinico San MatteoPaviaItaly
| | - Vittorio Bellotti
- Research Department Fondazione IRCCS Policlinico San MatteoPaviaItaly
| | - Francesca Lavatelli
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
- Research Department Fondazione IRCCS Policlinico San MatteoPaviaItaly
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of BiochemistryUniversity of PaviaPaviaItaly
- Research Department Fondazione IRCCS Policlinico San MatteoPaviaItaly
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4
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Solomon M, Foderà V, Langkilde AE, Elliott P, Tagliavini F, Forsyth T, Klementieva O, Bellotti V. Recommendations for addressing the translational gap between experimental and clinical research on amyloid diseases. J Transl Med 2022; 20:213. [PMID: 35562704 PMCID: PMC9102697 DOI: 10.1186/s12967-022-03420-9] [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: 02/14/2022] [Accepted: 04/29/2022] [Indexed: 11/10/2022] Open
Abstract
This paper is a report of recommendations for addressing translational challenges in amyloid disease research. They were developed during and following an international online workshop organized by the LINXS Institute of Advanced Neutron and X-Ray Science in March 2021. Key suggestions include improving cross-cultural communication between basic science and clinical research, increasing the influence of scientific societies and journals (vis-à-vis funding agencies and pharmaceutical companies), improving the dissemination of negative results, and strengthening the ethos of science.
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Affiliation(s)
- Miriam Solomon
- Department of Philosophy, Temple University, Philadelphia, PA, USA.
| | - Vito Foderà
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Annette Eva Langkilde
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Perry Elliott
- Institute of Cardiovascular Science, University College London (UCL), London, UK
| | | | - Trevor Forsyth
- Lund Institute for Advanced Neutron and X-ray Science (LINXS), 223 70, Lund, Sweden.,Faculty of Medicine, Lund University, SE-221 84, Lund, Sweden
| | - Oxana Klementieva
- Lund Institute for Advanced Neutron and X-ray Science (LINXS), 223 70, Lund, Sweden. .,Faculty of Medicine, Lund University, SE-221 84, Lund, Sweden.
| | - Vittorio Bellotti
- University College London (UCL), London, UK. .,Direzione Scientifica, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
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5
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Faravelli G, Mondani V, Mangione PP, Raimondi S, Marchese L, Lavatelli F, Stoppini M, Corazza A, Canetti D, Verona G, Obici L, Taylor GW, Gillmore JD, Giorgetti S, Bellotti V. Amyloid Formation by Globular Proteins: The Need to Narrow the Gap Between in Vitro and in Vivo Mechanisms. Front Mol Biosci 2022; 9:830006. [PMID: 35237660 PMCID: PMC8883118 DOI: 10.3389/fmolb.2022.830006] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/20/2022] [Indexed: 11/15/2022] Open
Abstract
The globular to fibrillar transition of proteins represents a key pathogenic event in the development of amyloid diseases. Although systemic amyloidoses share the common characteristic of amyloid deposition in the extracellular matrix, they are clinically heterogeneous as the affected organs may vary. The observation that precursors of amyloid fibrils derived from circulating globular plasma proteins led to huge efforts in trying to elucidate the structural events determining the protein metamorphosis from their globular to fibrillar state. Whereas the process of metamorphosis has inspired poets and writers from Ovid to Kafka, protein metamorphism is a more recent concept. It is an ideal metaphor in biochemistry for studying the protein folding paradigm and investigating determinants of folding dynamics. Although we have learned how to transform both normal and pathogenic globular proteins into fibrillar polymers in vitro, the events occurring in vivo, are far more complex and yet to be explained. A major gap still exists between in vivo and in vitro models of fibrillogenesis as the biological complexity of the disease in living organisms cannot be reproduced at the same extent in the test tube. Reviewing the major scientific attempts to monitor the amyloidogenic metamorphosis of globular proteins in systems of increasing complexity, from cell culture to human tissues, may help to bridge the gap between the experimental models and the actual pathological events in patients.
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Affiliation(s)
- Giulia Faravelli
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Valentina Mondani
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - P. Patrizia Mangione
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Sara Raimondi
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Loredana Marchese
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Francesca Lavatelli
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Monica Stoppini
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Alessandra Corazza
- Department of Medicine (DAME), University of Udine, Udine, Italy
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
| | - Diana Canetti
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Guglielmo Verona
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Laura Obici
- Amyloidosis Research and Treatment Centre, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Graham W. Taylor
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
| | - Julian D. Gillmore
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, United Kingdom
| | - Sofia Giorgetti
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
| | - Vittorio Bellotti
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, United Kingdom
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
- Scientific Direction, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- *Correspondence: Vittorio Bellotti, ,
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6
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Cantarutti C, Hunashal Y, La Rosa C, Condorelli M, Giorgetti S, Bellotti V, Fogolari F, Esposito G. The corona of protein-gold nanoparticle systems: the role of ionic strength. Phys Chem Chem Phys 2021; 24:1630-1637. [PMID: 34951613 DOI: 10.1039/d1cp04574a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The nature of the nanoparticle-protein corona is emerging as a key aspect in determining the impact of nanomaterials on proteins and in general on the biological response. We previously demonstrated that citrate-stabilized gold nanoparticles (Cit-AuNPs) interact with β2-microglobulin (β2m) preserving the protein native structure. Moreover, Cit-AuNPs are able to hinder in vitro fibrillogenesis of a β2m pathologic variant, namely D76N, by reducing the oligomeric association of the protein in solution. Here, we clarify the characteristics of the interaction between β2m and Cit-AuNPs by means of different techniques, i.e. surface enhanced Raman spectroscopy, NMR and quartz crystal microbalance with dissipation monitoring. All the results obtained clearly show that by simply changing the ionic strength of the medium it is possible to switch from a labile and transient nature of the protein-NP adduct featuring the so-called soft corona, to a more "hard" interaction with a layer of proteins having a longer residence time on the NP surface. This confirms that the interaction between β2m and Cit-AuNPs is dominated by electrostatic forces which can be tuned by modifying the ionic strength.
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Affiliation(s)
| | - Yamanappa Hunashal
- DAME, Università di Udine, 33100 Udine, Italy.,Science Division, New York University Abu Dhabi, Abu Dhabi, UAE.
| | - Carmelo La Rosa
- Dip. Scienze Chimiche, Università di Catania, 95125 Catania, Italy
| | | | - Sofia Giorgetti
- Dipartimento di Medicina Molecolare, Università di Pavia, 27100 Pavia, Italy
| | - Vittorio Bellotti
- Dipartimento di Medicina Molecolare, Università di Pavia, 27100 Pavia, Italy.,Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Federico Fogolari
- DMIF, Università di Udine, 33100 Udine, Italy.,INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - Gennaro Esposito
- Science Division, New York University Abu Dhabi, Abu Dhabi, UAE. .,INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
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7
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Zimmerer A, Ramirez L, Astarita E, Bellotti V, Cárdenas C, Ribas M. [Arthroscopically assisted minimally invasive symphysioplasty for the treatment of pubic related groin pain]. Oper Orthop Traumatol 2021; 34:109-116. [PMID: 34878585 DOI: 10.1007/s00064-021-00753-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/30/2020] [Accepted: 04/05/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Therapy of pubic related groin pain via minimally invasive symphysioplasty. INDICATIONS Therapy of refractory pubic related groin pain based on osteitis pubis. CONTRAINDICATIONS Groin pain from causes other than pubic related groin pain. SURGICAL TECHNIQUE After a minimally invasive approach, an incision in the anterior capsule is made while protecting the dorsal capsule parts and the arcuate pubic ligament. The symphysis end plates are remodeled arthroscopically assisted using a surgical burr. The newly created pubic symphysis joint is filled with autogenous fibrin to support the formation of a new discus interpubicus. POSTOPERATIVE MANAGEMENT Partial weight-bearing for 4 weeks with 20 kg using crutches is recommended. During the first 4 weeks the range of motion should be restricted. RESULTS Since 2010, 10 athletes (7 men, 3 women; average age 34.1 ± 7.8 (23-47) years) have undergone arthroscopically assisted minimally invasive symphysioplasty and treatment of femoroacetabular impingement syndrome. The average follow-up time was 5.1 (2-9) years. All patients returned to their sport level. The mean preoperative Nonarthritic Hip Score (NAHS) of 64.4 ± 15.1 (32.1-86.5) points improved to a mean postoperative NAHS of 91.4 ± 9.8 (62.4-98.75) points (p < 0.0001). The average patient satisfaction (scale 0 to 10; 10 highest satisfaction) was 9.8 ± 0.4 (9-10).
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Affiliation(s)
- Alexander Zimmerer
- ARCUS Kliniken, Pforzheim, Rastatter Str. 17-19, 75179, Pforzheim, Deutschland.
| | - Luis Ramirez
- Grupo Quirónsalud, Einheit für Hüft und Becken Chirurgie, Universitätsklinikum Dexeus, Barcelona, Spanien
| | - Emanuele Astarita
- Grupo Quirónsalud, Einheit für Hüft und Becken Chirurgie, Universitätsklinikum Dexeus, Barcelona, Spanien
| | - Vittorio Bellotti
- Grupo Quirónsalud, Einheit für Hüft und Becken Chirurgie, Universitätsklinikum Dexeus, Barcelona, Spanien
| | - Carlomagno Cárdenas
- Grupo Quirónsalud, Einheit für Hüft und Becken Chirurgie, Universitätsklinikum Dexeus, Barcelona, Spanien
| | - Manuel Ribas
- Grupo Quirónsalud, Einheit für Hüft und Becken Chirurgie, Universitätsklinikum Dexeus, Barcelona, Spanien
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8
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Canetti D, Nocerino P, Rendell NB, Botcher N, Gilbertson JA, Blanco A, Rowczenio D, Morelli A, Mangione PP, Corazza A, Verona G, Giorgetti S, Marchese L, Westermark P, Hawkins PN, Gillmore JD, Bellotti V, Taylor GW. Clinical ApoA-IV amyloid is associated with fibrillogenic signal sequence. J Pathol 2021; 255:311-318. [PMID: 34331462 PMCID: PMC9291309 DOI: 10.1002/path.5770] [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: 03/10/2021] [Revised: 07/01/2021] [Accepted: 07/27/2021] [Indexed: 11/11/2022]
Abstract
Apolipoprotein A‐IV amyloidosis is an uncommon form of the disease normally resulting in renal and cardiac dysfunction. ApoA‐IV amyloidosis was identified in 16 patients attending the National Amyloidosis Centre and in eight clinical samples received for histology review. Unexpectedly, proteomics identified the presence of ApoA‐IV signal sequence residues (p.18‐43 to p.20‐43) in 16/24 trypsin‐digested amyloid deposits but in only 1/266 non‐ApoA‐IV amyloid samples examined. These additional signal residues were also detected in the cardiac sample from the Swedish patient in which ApoA‐IV amyloid was first described, and in plasma from a single cardiac ApoA‐IV amyloidosis patient. The most common signal‐containing peptide observed in ApoA‐IV amyloid, p.20‐43, and to a far lesser extent the N‐terminal peptide, p.21‐43, were fibrillogenic in vitro at physiological pH, generating Congo red‐positive fibrils. The addition of a single signal‐derived alanine residue to the N‐terminus has resulted in markedly increased fibrillogenesis. If this effect translates to the mature circulating protein in vivo, then the presence of signal may result in preferential deposition as amyloid, perhaps acting as seed for the main circulating native form of the protein; it may also influence other ApoA‐IV‐associated pathologies. © 2021 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Diana Canetti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Paola Nocerino
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Nigel B Rendell
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Nicola Botcher
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Janet A Gilbertson
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Angel Blanco
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Dorota Rowczenio
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Alessandra Morelli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | | | - Guglielmo Verona
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Loredana Marchese
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Per Westermark
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Philip N Hawkins
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Julian D Gillmore
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
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9
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Moura A, Nocerino P, Gilbertson JA, Rendell NB, Mangione PP, Verona G, Rowczenio D, Gillmore JD, Taylor GW, Bellotti V, Canetti D. Lysozyme amyloid: evidence for the W64R variant by proteomics in the absence of the wild type protein. Amyloid 2020; 27:206-207. [PMID: 32067519 PMCID: PMC7446029 DOI: 10.1080/13506129.2020.1720637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alexandra Moura
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Paola Nocerino
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Janet A Gilbertson
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Nigel B Rendell
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - P Patrizia Mangione
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Guglielmo Verona
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Dorota Rowczenio
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Julian D Gillmore
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Graham W Taylor
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Diana Canetti
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
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10
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Migdalska‐Richards A, Wegrzynowicz M, Harrison IF, Verona G, Bellotti V, Spillantini MG, Schapira AHV. L444P Gba1 mutation increases formation and spread of α-synuclein deposits in mice injected with mouse α-synuclein pre-formed fibrils. PLoS One 2020; 15:e0238075. [PMID: 32833982 PMCID: PMC7444808 DOI: 10.1371/journal.pone.0238075] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/07/2020] [Indexed: 11/28/2022] Open
Abstract
Parkinson disease is the most common neurodegenerative movement disorder, estimated to affect one in twenty-five individuals over the age of 80. Mutations in glucocerebrosidase 1 (GBA1) represent the most common genetic risk factor for Parkinson disease. The link between GBA1 mutations and α-synuclein accumulation, a hallmark of Parkinson disease, is not fully understood. Following our recent finding that Gba1 mutations lead to increased α-synuclein accumulation in mice, we have studied the effects of a single injection of mouse α-synuclein pre-formed fibrils into the striatum of Gba1 mice that carry a L444P knock-in mutation. We found significantly greater formation and spread of α-synuclein inclusions in Gba1-transgenic mice compared to wild-type controls. This indicates that the Gba1 L444P mutation accelerates α-synuclein pathology and spread.
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Affiliation(s)
- Anna Migdalska‐Richards
- Department of Clinical Neurosciences, Institute of Neurology, University College London, London, United Kingdom
- Complex Disease Epigenetics Group, University of Exeter, Royal Devon & Exeter Hospital, Exeter, United Kingdom
- * E-mail: (AHVS); (AMR)
| | - Michal Wegrzynowicz
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
- Laboratory of Molecular Basis of Neurodegeneration, Mossakowski Medical Research Centre Polish Academy of Sciences, Warsaw, Poland
| | - Ian F. Harrison
- Centre for Advanced Biomedical Imaging, University College London, London, United Kingdom
| | - Guglielmo Verona
- Centre for Amyloidosis and Acute Phase Proteins, Faculty of Medical Sciences, University College London, London, United Kingdom
| | - Vittorio Bellotti
- Centre for Amyloidosis and Acute Phase Proteins, Faculty of Medical Sciences, University College London, London, United Kingdom
| | | | - Anthony H. V. Schapira
- Department of Clinical Neurosciences, Institute of Neurology, University College London, London, United Kingdom
- * E-mail: (AHVS); (AMR)
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11
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Canetti D, Rendell NB, Gilbertson JA, Botcher N, Nocerino P, Blanco A, Di Vagno L, Rowczenio D, Verona G, Mangione PP, Bellotti V, Hawkins PN, Gillmore JD, Taylor GW. Diagnostic amyloid proteomics: experience of the UK National Amyloidosis Centre. Clin Chem Lab Med 2020; 58:948-957. [PMID: 32069225 DOI: 10.1515/cclm-2019-1007] [Citation(s) in RCA: 19] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/16/2020] [Indexed: 11/15/2022]
Abstract
Systemic amyloidosis is a serious disease which is caused when normal circulating proteins misfold and aggregate extracellularly as insoluble fibrillary deposits throughout the body. This commonly results in cardiac, renal and neurological damage. The tissue target, progression and outcome of the disease depends on the type of protein forming the fibril deposit, and its correct identification is central to determining therapy. Proteomics is now used routinely in our centre to type amyloid; over the past 7 years we have examined over 2000 clinical samples. Proteomics results are linked directly to our patient database using a simple algorithm to automatically highlight the most likely amyloidogenic protein. Whilst the approach has proved very successful, we have encountered a number of challenges, including poor sample recovery, limited enzymatic digestion, the presence of multiple amyloidogenic proteins and the identification of pathogenic variants. Our proteomics procedures and approaches to resolving difficult issues are outlined.
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Affiliation(s)
- Diana Canetti
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Nigel B Rendell
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Janet A Gilbertson
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Nicola Botcher
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Paola Nocerino
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Angel Blanco
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Lucia Di Vagno
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Dorota Rowczenio
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Guglielmo Verona
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - P Patrizia Mangione
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Philip N Hawkins
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Julian D Gillmore
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Graham W Taylor
- Wolfson Drug Discovery Unit and National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
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12
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Raimondi S, Mangione PP, Verona G, Canetti D, Nocerino P, Marchese L, Piccarducci R, Mondani V, Faravelli G, Taylor GW, Gillmore JD, Corazza A, Pepys MB, Giorgetti S, Bellotti V. Comparative study of the stabilities of synthetic in vitro and natural ex vivo transthyretin amyloid fibrils. J Biol Chem 2020; 295:11379-11387. [PMID: 32571879 DOI: 10.1074/jbc.ra120.014026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/17/2020] [Indexed: 01/18/2023] Open
Abstract
Systemic amyloidosis caused by extracellular deposition of insoluble fibrils derived from the pathological aggregation of circulating proteins, such as transthyretin, is a severe and usually fatal condition. Elucidation of the molecular pathogenic mechanism of the disease and discovery of effective therapies still represents a challenging medical issue. The in vitro preparation of amyloid fibrils that exhibit structural and biochemical properties closely similar to those of natural fibrils is central to improving our understanding of the biophysical basis of amyloid formation in vivo and may offer an important tool for drug discovery. Here, we compared the morphology and thermodynamic stability of natural transthyretin fibrils with those of fibrils generated in vitro either using the common acidification procedure or primed by limited selective cleavage by plasmin. The free energies for fibril formation were -12.36, -8.10, and -10.61 kcal mol-1, respectively. The fibrils generated via plasmin cleavage were more stable than those prepared at low pH and were thermodynamically and morphologically similar to natural fibrils extracted from human amyloidotic tissue. Determination of thermodynamic stability is an important tool that is complementary to other methods of structural comparison between ex vivo fibrils and fibrils generated in vitro Our finding that fibrils created via an in vitro amyloidogenic pathway are structurally similar to ex vivo human amyloid fibrils does not necessarily establish that the fibrillogenic pathway is the same for both, but it narrows the current knowledge gap between in vitro models and in vivo pathophysiology.
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Affiliation(s)
- Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - P Patrizia Mangione
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy.,Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
| | - Guglielmo Verona
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
| | - Diana Canetti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
| | - Paola Nocerino
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
| | - Loredana Marchese
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Rebecca Piccarducci
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom.,Department of Pharmacy, University of Pisa, Pisa, Italy
| | - Valentina Mondani
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy.,Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
| | - Giulia Faravelli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
| | - Julian D Gillmore
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, United Kingdom
| | - Alessandra Corazza
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom.,Department of Medicine (DAME), University of Udine, Udine, Italy.,Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
| | - Mark B Pepys
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom.,National Amyloidosis Centre, University College London and Royal Free Hospital, London, United Kingdom
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy .,Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy
| | - Vittorio Bellotti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy .,Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
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13
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Ramírez-Núñez L, Payo-Ollero J, Comas M, Cárdenas C, Bellotti V, Astarita E, Chacón-Cascio G, Ribas M. Periacetabular osteotomy for hip dysplasia treatment through a mini-invasive technique. Our results at mid-term in 131 cases. Rev Esp Cir Ortop Traumatol (Engl Ed) 2020. [DOI: 10.1016/j.recote.2020.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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14
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Ramírez-Núñez L, Payo-Ollero J, Comas M, Cárdenas C, Bellotti V, Astarita E, Chacón-Cascio G, Ribas M. Periacetabular osteotomy for hip dysplasia treatment through a mini-invasive technique. Our results at mid-term in 131 cases. Rev Esp Cir Ortop Traumatol (Engl Ed) 2020; 64:151-159. [PMID: 32197953 DOI: 10.1016/j.recot.2020.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 11/26/2019] [Accepted: 01/18/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Periacetabular osteotomy (PAO) is an accepted and worldwide technique recognized for residual dysplasia treatment and even in unstable hips with limited acetabular coverage. The aim of this study is to analyse the functional, radiological and complication results in patients treated with mini-invasive PAO. MATERIAL AND METHODS We performed a retrospective study in which we analysed 131 cases undergoing mini-invasive PAO at our centre. The degree of joint degeneration was evaluated with Tönnis scale, Wiberg angle, acetabular index (AI), anterior coverage angle (AC), joint space, complications and functional outcome with the Non-Arthritic Hip Score (NAHS) were analysed preoperatively and at the end of follow-up. RESULTS The average age was 32.3±9.5 (SD) years, 102 (77.9%) were female and 29 (22.1%) were male. 7.7±2.8 (SD) years follow up. The radiological parameters improved between the pre-surgical phase and the end of follow-up, Wiberg angle+18.5° (18.3° versus 36.8°, 95% CI 17.3 to 19.7), AC angle+13.5° (26.2° versus 39.7°, 95%CI 11.6 to 15.4) and the AI -11.1° (19.5° versus 8.4°; 95%CI -12.1 to -10,1). In addition, the functional results, with the NAHS scale, improved+31.3 points (60.7 pre-surgical versus 92 at the end of follow-up, 95% CI 28.7 to 33.8). The most common complication was transient lateral femoral cutaneous nerve hypoaesthesia in 10 cases (7%). CONCLUSION The mini-invasive PAO approach is a reproducible technique, it allows restoration of acetabular coverage and provides an improvement in functional scales as confirmed by our series.
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Affiliation(s)
- L Ramírez-Núñez
- Instituto Catalán de Traumatología y Medicina Deportiva (ICATME), Hospital Universitario Quirón Dexeus, Barcelona, España.
| | - J Payo-Ollero
- Departamento Cirugía Ortopédica y Traumatología, Clínica Universidad de Navarra, Pamplona, España
| | - M Comas
- Instituto Catalán de Traumatología y Medicina Deportiva (ICATME), Hospital Universitario Quirón Dexeus, Barcelona, España
| | - C Cárdenas
- Instituto Catalán de Traumatología y Medicina Deportiva (ICATME), Hospital Universitario Quirón Dexeus, Barcelona, España
| | - V Bellotti
- Instituto Catalán de Traumatología y Medicina Deportiva (ICATME), Hospital Universitario Quirón Dexeus, Barcelona, España
| | - E Astarita
- Instituto Catalán de Traumatología y Medicina Deportiva (ICATME), Hospital Universitario Quirón Dexeus, Barcelona, España
| | - G Chacón-Cascio
- Instituto Catalán de Traumatología y Medicina Deportiva (ICATME), Hospital Universitario Quirón Dexeus, Barcelona, España
| | - M Ribas
- Instituto Catalán de Traumatología y Medicina Deportiva (ICATME), Hospital Universitario Quirón Dexeus, Barcelona, España
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15
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Faravelli G, Raimondi S, Marchese L, Partridge FA, Soria C, Mangione PP, Canetti D, Perni M, Aprile FA, Zorzoli I, Di Schiavi E, Lomas DA, Bellotti V, Sattelle DB, Giorgetti S. C. elegans expressing D76N β 2-microglobulin: a model for in vivo screening of drug candidates targeting amyloidosis. Sci Rep 2019; 9:19960. [PMID: 31882874 PMCID: PMC6934621 DOI: 10.1038/s41598-019-56498-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/10/2019] [Indexed: 01/16/2023] Open
Abstract
The availability of a genetic model organism with which to study key molecular events underlying amyloidogenesis is crucial for elucidating the mechanism of the disease and the exploration of new therapeutic avenues. The natural human variant of β2-microglobulin (D76N β2-m) is associated with a fatal familial form of systemic amyloidosis. Hitherto, no animal model has been available for studying in vivo the pathogenicity of this protein. We have established a transgenic C. elegans line, expressing the human D76N β2-m variant. Using the INVertebrate Automated Phenotyping Platform (INVAPP) and the algorithm Paragon, we were able to detect growth and motility impairment in D76N β2-m expressing worms. We also demonstrated the specificity of the β2-m variant in determining the pathological phenotype by rescuing the wild type phenotype when β2-m expression was inhibited by RNA interference (RNAi). Using this model, we have confirmed the efficacy of doxycycline, an inhibitor of the aggregation of amyloidogenic proteins, in rescuing the phenotype. In future, this C. elegans model, in conjunction with the INVAPP/Paragon system, offers the prospect of high-throughput chemical screening in the search for new drug candidates.
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Affiliation(s)
- Giulia Faravelli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy.
| | - Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy
| | - Loredana Marchese
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy
| | - Frederick A Partridge
- Centre for Respiratory Biology, UCL Respiratory, Division of Medicine, University College London, Gower Street, London, WC1E 6JF, United Kingdom
| | - Cristina Soria
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy
| | - P Patrizia Mangione
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK
| | - Diana Canetti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK
| | - Michele Perni
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Francesco A Aprile
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Irene Zorzoli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy
| | - Elia Di Schiavi
- Institute of Biosciences and Bioresources (IBBR), CNR, 80131, Naples, Italy
| | - David A Lomas
- Centre for Respiratory Biology, UCL Respiratory, Division of Medicine, University College London, Gower Street, London, WC1E 6JF, United Kingdom
| | - Vittorio Bellotti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK
| | - David B Sattelle
- Centre for Respiratory Biology, UCL Respiratory, Division of Medicine, University College London, Gower Street, London, WC1E 6JF, United Kingdom
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100, Pavia, Italy.
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16
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Izco M, Blesa J, Schleef M, Schmeer M, Porcari R, Al-Shawi R, Ellmerich S, de Toro M, Gardiner C, Seow Y, Reinares-Sebastian A, Forcen R, Simons JP, Bellotti V, Cooper JM, Alvarez-Erviti L. Systemic Exosomal Delivery of shRNA Minicircles Prevents Parkinsonian Pathology. Mol Ther 2019; 27:2111-2122. [PMID: 31501034 DOI: 10.1016/j.ymthe.2019.08.010] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 08/14/2019] [Accepted: 08/14/2019] [Indexed: 12/29/2022] Open
Abstract
The development of new therapies to slow down or halt the progression of Parkinson's disease is a health care priority. A key pathological feature is the presence of alpha-synuclein aggregates, and there is increasing evidence that alpha-synuclein propagation plays a central role in disease progression. Consequently, the downregulation of alpha-synuclein is a potential therapeutic target. As a chronic disease, the ideal treatment will be minimally invasive and effective in the long-term. Knockdown of gene expression has clear potential, and siRNAs specific to alpha-synuclein have been designed; however, the efficacy of siRNA treatment is limited by its short-term efficacy. To combat this, we designed shRNA minicircles (shRNA-MCs), with the potential for prolonged effectiveness, and used RVG-exosomes as the vehicle for specific delivery into the brain. We optimized this system using transgenic mice expressing GFP and demonstrated its ability to downregulate GFP protein expression in the brain for up to 6 weeks. RVG-exosomes were used to deliver anti-alpha-synuclein shRNA-MC therapy to the alpha-synuclein preformed-fibril-induced model of parkinsonism. This therapy decreased alpha-synuclein aggregation, reduced the loss of dopaminergic neurons, and improved the clinical symptoms. Our results confirm the therapeutic potential of shRNA-MCs delivered by RVG-exosomes for long-term treatment of neurodegenerative diseases.
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Affiliation(s)
- María Izco
- Laboratory of Molecular Neurobiology, Center for Biomedical Research of La Rioja (CIBIR), Logroño 26006, La Rioja, Spain
| | - Javier Blesa
- HM CINAC, Hospital Universitario HM Puerta del Sur, Mostoles 28938, Madrid, Spain
| | | | - Marco Schmeer
- PlasmidFactory GmbH & Co. KG, Bielefeld 33607, Germany
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London NW3 2PF, UK
| | - Raya Al-Shawi
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London NW3 2PF, UK; Centre for Biomedical Science, Division of Medicine, University College London, London NW3 2PF, UK
| | - Stephan Ellmerich
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London NW3 2PF, UK
| | - María de Toro
- Genomics and Bioinformatics Core Facility, Center for Biomedical Research of La Rioja (CIBIR), Logroño 26006, La Rioja, Spain
| | - Chris Gardiner
- Department of Haematology, University College London, London NW3 2PF, UK
| | - Yiqi Seow
- Molecular Engineering Laboratory, Biomedical Sciences Institutes, A*STAR, Singapore 138668, Singapore
| | | | - Raquel Forcen
- Laboratory of Molecular Neurobiology, Center for Biomedical Research of La Rioja (CIBIR), Logroño 26006, La Rioja, Spain
| | - J Paul Simons
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London NW3 2PF, UK; Centre for Biomedical Science, Division of Medicine, University College London, London NW3 2PF, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London NW3 2PF, UK
| | - J Mark Cooper
- Department of Clinical Neuroscience, Institute of Neurology, University College London, London NW3 2PF, UK
| | - Lydia Alvarez-Erviti
- Laboratory of Molecular Neurobiology, Center for Biomedical Research of La Rioja (CIBIR), Logroño 26006, La Rioja, Spain; Department of Clinical Neuroscience, Institute of Neurology, University College London, London NW3 2PF, UK.
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17
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Corazza A, Verona G, Waudby CA, Mangione PP, Bingham R, Uings I, Canetti D, Nocerino P, Taylor GW, Pepys MB, Christodoulou J, Bellotti V. Binding of Monovalent and Bivalent Ligands by Transthyretin Causes Different Short- and Long-Distance Conformational Changes. J Med Chem 2019; 62:8274-8283. [PMID: 31393717 PMCID: PMC6863598 DOI: 10.1021/acs.jmedchem.9b01037] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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] [Indexed: 12/28/2022]
Abstract
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The wild type protein,
transthyretin (TTR), and over 120 genetic
TTR variants are amyloidogenic and cause, respectively, sporadic and
hereditary systemic TTR amyloidosis. The homotetrameric TTR contains
two identical thyroxine binding pockets, occupation of which by specific
ligands can inhibit TTR amyloidogenesis in vitro. Ligand binding stabilizes
the tetramer, inhibiting its proteolytic cleavage and its dissociation.
Here, we show with solution-state NMR that ligand binding induces
long-distance conformational changes in the TTR that have not previously
been detected by X-ray crystallography, consistently with the inhibition
of the cleavage of the DE loop. The NMR findings, coupled with surface
plasmon resonance measurements, have identified dynamic exchange processes
underlying the negative cooperativity of binding of “monovalent”
ligand tafamidis. In contrast, mds84, our prototypic “bivalent”
ligand, which is a more potent stabilizer of TTR in vitro that occupies
both thyroxine pockets and the intramolecular channel between them,
has greater structural effects.
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Affiliation(s)
- Alessandra Corazza
- Department of Medicine (DAME) , University of Udine , Udine 33100 , Italy.,Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K.,Istituto Nazionale Biostrutture e Biosistemi , Roma 00136 , Italy
| | - Guglielmo Verona
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K
| | - Christopher A Waudby
- Institute of Structural and Molecular Biology , University College London , London WC1E 6BT , U.K.,Institute of Structural and Molecular Biology , Birkbeck College , London WC1E 7HX , U.K
| | - P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K.,Department of Molecular Medicine, Institute of Biochemistry , University of Pavia , Pavia 27100 , Italy
| | - Ryan Bingham
- GSK Medicines Research Centre , Stevenage , Hertfordshire SG1 2NY , U.K
| | - Iain Uings
- GSK Medicines Research Centre , Stevenage , Hertfordshire SG1 2NY , U.K
| | - Diana Canetti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K
| | - Paola Nocerino
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K
| | - Mark B Pepys
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K.,National Amyloidosis Centre , University College London and Royal Free Hospital , London NW3 2PF , U.K
| | - John Christodoulou
- Institute of Structural and Molecular Biology , University College London , London WC1E 6BT , U.K.,Institute of Structural and Molecular Biology , Birkbeck College , London WC1E 7HX , U.K
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine , University College London , London NW3 2PF , U.K.,Department of Molecular Medicine, Institute of Biochemistry , University of Pavia , Pavia 27100 , Italy
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18
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Cryar A, Hirtz C, Lehmann S, Verona G, Bellotti V, Quaglia M. P1-259: A POTENTIAL REFERENCE MEASUREMENT PROCEDURE FOR QUANTIFICATION OF α-SYNUCLEIN IN CSF. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Rezk T, Gilbertson JA, Mangione PP, Rowczenio D, Rendell NB, Canetti D, Lachmann HJ, Wechalekar AD, Bass P, Hawkins PN, Bellotti V, Taylor GW, Gillmore JD. The complementary role of histology and proteomics for diagnosis and typing of systemic amyloidosis. J Pathol Clin Res 2019; 5:145-153. [PMID: 30740936 PMCID: PMC6648380 DOI: 10.1002/cjp2.126] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [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: 12/17/2018] [Revised: 01/28/2019] [Accepted: 02/04/2019] [Indexed: 12/30/2022]
Abstract
The tissue diagnosis of amyloidosis and confirmation of fibril protein type, which are crucial for clinical management, have traditionally relied on Congo red (CR) staining followed by immunohistochemistry (IHC) using fibril protein specific antibodies. However, amyloid IHC is qualitative, non-standardised, requires operator expertise, and not infrequently fails to produce definitive results. More recently, laser dissection mass spectrometry (LDMS) has been developed as an alternative method to characterise amyloid in tissue sections. We sought to compare these techniques in a real world setting. During 2017, we performed LDMS on 640 formalin-fixed biopsies containing amyloid (CR+ve) comprising all 320 cases that could not be typed by IHC (IHC-ve) and 320 randomly selected CR+ve samples that had been typed (IHC+ve). In addition, we studied 60 biopsies from patients in whom there was a strong suspicion of amyloidosis, but in whom histology was non-diagnostic (CR-ve). Comprehensive clinical assessments were conducted in 532 (76%) of cases. Among the 640 CR+ve samples, 602 (94%) contained ≥2 of 3 amyloid signature proteins (ASPs) on LDMS (ASP+ve) supporting the presence of amyloid. A total of 49 of the 60 CR-ve samples were ASP-ve; 7 of 11 that were ASP+ve were glomerular. The amyloid fibril protein was identified by LDMS in 255 of 320 (80%) of the IHC-ve samples and in a total of 545 of 640 (85%) cases overall. The LDMS and IHC techniques yielded discordant results in only 7 of 320 (2%) cases. CR histology and LDMS are corroborative for diagnosis of amyloid, but LDMS is superior to IHC for confirming amyloid type.
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Affiliation(s)
- Tamer Rezk
- National Amyloidosis Centre, University College London, London, UK.,Department of Renal Medicine, University College London, London, UK
| | | | - P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Dorota Rowczenio
- National Amyloidosis Centre, University College London, London, UK
| | - Nigel B Rendell
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK
| | - Diana Canetti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK
| | - Helen J Lachmann
- National Amyloidosis Centre, University College London, London, UK
| | | | - Paul Bass
- Department of Renal Medicine, University College London, London, UK
| | - Philip N Hawkins
- National Amyloidosis Centre, University College London, London, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK
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20
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De Meo F, Cacciola G, Bellotti V, Bruschetta A, Cavaliere P. Trabecular Titanium acetabular cups in hip revision surgery: mid-term clinical and radiological outcomes. Hip Int 2018; 28:61-65. [PMID: 30755112 DOI: 10.1177/1120700018812992] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION: Severe acetabular bone loss during revision hip arthroplasty can be restored with different surgical techniques. Best results have been observed using porous tantalum cementless cups. Trabecular Titanium (TT) cups were designed to reproduce the structure, mechanical and biological characteristics of trabecular bone. Few clinical studies have been published with these cups. The aim of this study is to evaluate the clinical and radiological outcome of patients with large acetabular defects (Paprosky IIb or higher) revised using TT cups. MATERIALS AND METHODS: 64 consecutive patients who underwent revision for total hip arthroplasty (THA) between 2011 and 2015 at our institution were enrolled. All were classified as Paprosky IIb, IIc, IIIa and IIIb. Periprosthetic joint infections and fractures were not included in this study. Radiographic and clinical (Harris Hip Score (HHS)) outcomes were evaluated. Kaplan-Meyer survivorship curve was performed. RESULTS: Complete data of 58 patients (mean follow-up 48.3 months) were analysed. 6 patients underwent a further revision (10.3%). Causes of re-revision were instability (5.2%), infection (3.4%) and aseptic loosening (1.7%). No radiolucent lines or signs of migration were observed. Survivorship was 94.8%. HHS Improved from a mean of 36.5-83.7. DISCUSSION: TT cups demonstrated encouraging results at mid-term follow-up. Cup modularity represented a helpful tool to restore hip rotation centre and to reduce the risk of dislocation. The capacity of trabecular titanium to induce bone growth and the versatility of modularity, make the Delta TT System a very useful aid for surgeons who are more frequently faced with complex revision.
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Affiliation(s)
- Federico De Meo
- 1 Franco Scalabrino Orthopaedic Institute of Southern Italy, Messina, Italy
| | - Giorgio Cacciola
- 2 Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, Italy
| | | | | | - Pietro Cavaliere
- 1 Franco Scalabrino Orthopaedic Institute of Southern Italy, Messina, Italy
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21
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Mangione PP, Verona G, Corazza A, Marcoux J, Canetti D, Giorgetti S, Raimondi S, Stoppini M, Esposito M, Relini A, Canale C, Valli M, Marchese L, Faravelli G, Obici L, Hawkins PN, Taylor GW, Gillmore JD, Pepys MB, Bellotti V. Plasminogen activation triggers transthyretin amyloidogenesis in vitro. J Biol Chem 2018; 293:14192-14199. [PMID: 30018138 PMCID: PMC6139548 DOI: 10.1074/jbc.ra118.003990] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [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: 05/15/2018] [Revised: 07/06/2018] [Indexed: 12/13/2022] Open
Abstract
Systemic amyloidosis is a usually fatal disease caused by extracellular accumulation of abnormal protein fibers, amyloid fibrils, derived by misfolding and aggregation of soluble globular plasma protein precursors. Both WT and genetic variants of the normal plasma protein transthyretin (TTR) form amyloid, but neither the misfolding leading to fibrillogenesis nor the anatomical localization of TTR amyloid deposition are understood. We have previously shown that, under physiological conditions, trypsin cleaves human TTR in a mechano-enzymatic mechanism that generates abundant amyloid fibrils in vitro In sharp contrast, the widely used in vitro model of denaturation and aggregation of TTR by prolonged exposure to pH 4.0 yields almost no clearly defined amyloid fibrils. However, the exclusive duodenal location of trypsin means that this enzyme cannot contribute to systemic extracellular TTR amyloid deposition in vivo Here, we therefore conducted a bioinformatics search for systemically active tryptic proteases with appropriate tissue distribution, which unexpectedly identified plasmin as the leading candidate. We confirmed that plasmin, just as trypsin, selectively cleaves human TTR between residues 48 and 49 under physiological conditions in vitro Truncated and full-length protomers are then released from the native homotetramer and rapidly aggregate into abundant fibrils indistinguishable from ex vivo TTR amyloid. Our findings suggest that physiological fibrinolysis is likely to play a critical role in TTR amyloid formation in vivo Identification of this surprising intersection between two hitherto unrelated pathways opens new avenues for elucidating the mechanisms of TTR amyloidosis, for seeking susceptibility risk factors, and for therapeutic innovation.
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Affiliation(s)
- P Patrizia Mangione
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Guglielmo Verona
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom
| | - Alessandra Corazza
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom.,Department of Medicine (DAME), University of Udine, 33100 Udine, Italy.,Istituto Nazionale Biostrutture e Biosistemi, 00136 Roma, Italy
| | - Julien Marcoux
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, 31000 Toulouse, France
| | - Diana Canetti
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Monica Stoppini
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Marilena Esposito
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom
| | - Annalisa Relini
- Department of Chemistry and Industrial Chemistry, University of Genoa, 16146 Genoa, Italy
| | - Claudio Canale
- Department of Physics, University of Genoa, 16146 Genoa, Italy
| | - Maurizia Valli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Loredana Marchese
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Giulia Faravelli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Laura Obici
- Amyloidosis Research and Treatment Center, Foundation IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Philip N Hawkins
- National Amyloidosis Centre, University College London and Royal Free Hospital, London NW3 2PF, United Kingdom
| | - Graham W Taylor
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom
| | - Julian D Gillmore
- National Amyloidosis Centre, University College London and Royal Free Hospital, London NW3 2PF, United Kingdom
| | - Mark B Pepys
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom.,National Amyloidosis Centre, University College London and Royal Free Hospital, London NW3 2PF, United Kingdom
| | - Vittorio Bellotti
- From the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom, .,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
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22
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Balduini CL, Bertolino G, Noris P, Piovella F, Sinigaglia F, Bellotti V, Samaden A, Torti M, Mazzini G. Defect of Platelet Aggregation and Adhesion Induced by Autoantibodies Against Platelet Glycoprotein IIIa. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1656350] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryA young patient developed chronic idiopathic thrombocytopenic purpura. Prednisone therapy normalized platelet number, but bleeding symptoms did not disappear. Platelet function was severely impaired, since platelet aggregation, ATP release and adhesion to collagen and subendothelial matrix were significantly reduced. Plasma and purified immunoglobulins of the patient reproduced the functional defects in normal platelets. Immunoblotting revealed that patient’s plasma contained an antibody reacting with a component of platelets with the same electrophoretic mobility of glycoproteins IIIa of normal platelets. Moreover, patient’s plasma inhibited the binding of an anti-GPIIb/IIIa monoclonal antibody to platelet surface. Additional immunosuppressive therapy with prednisone and azathioprine normalized platelet function and induced the disappearance of bleeding symptoms.
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Affiliation(s)
- Carlo L Balduini
- The Department of Internal Medicine (Clinical Medicine 2), University of Pavia-IRCCS S. Matteo, Pavia, Italy
| | - Giampiera Bertolino
- The Department of Internal Medicine (Clinical Medicine 2), University of Pavia-IRCCS S. Matteo, Pavia, Italy
| | - Patrizia Noris
- The Department of Internal Medicine (Clinical Medicine 2), University of Pavia-IRCCS S. Matteo, Pavia, Italy
| | - Franco Piovella
- The Department of Internal Medicine (Clinical Medicine 2), University of Pavia-IRCCS S. Matteo, Pavia, Italy
| | | | - Vittorio Bellotti
- The Department of Internal Medicine (Clinical Medicine 2), University of Pavia-IRCCS S. Matteo, Pavia, Italy
| | - Anna Samaden
- The Department of Internal Medicine (Clinical Medicine 2), University of Pavia-IRCCS S. Matteo, Pavia, Italy
| | - Mauro Torti
- The Department of Biochemistry, University of Pavia, Pavia, Italy
| | - Giuliano Mazzini
- The Centro di Studio per I'lstochimica', Department of Animal Biology, Pavia, Italy
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23
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Quaglia M, Bellotti V, Cano S, Cryar A, Deane K, Divieto C, Fillmer A, Giangrande C, Köbe T, Lehmann S, Melin J, Pang S, Parkes H, Pendrill L. P2‐233: BETTER MEASUREMENT FOR IMPROVED DIAGNOSIS AND MANAGEMENT OF ALZHEIMER'S DISEASE: UPDATE ON THE EMPIR NEUROMET PROJECT. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Stefan Cano
- Modus OutcomesLetchworth Garden CityUnited Kingdom
| | | | | | - Carla Divieto
- Istituto Nazionale di Ricerca MetrologicaTorinoItaly
| | | | | | - Theresa Köbe
- Charité – Universitätsmedizin Berlin
- Humboldt‐UniversitätBerlin
- Berlin Institute of HealthNeuroCure Clinical Research Center, Department of NeurologyBerlinGermany
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24
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Le Marchand T, de Rosa M, Salvi N, Sala BM, Andreas LB, Barbet-Massin E, Sormanni P, Barbiroli A, Porcari R, Sousa Mota C, de Sanctis D, Bolognesi M, Emsley L, Bellotti V, Blackledge M, Camilloni C, Pintacuda G, Ricagno S. Conformational dynamics in crystals reveal the molecular bases for D76N beta-2 microglobulin aggregation propensity. Nat Commun 2018; 9:1658. [PMID: 29695721 PMCID: PMC5916882 DOI: 10.1038/s41467-018-04078-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [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] [Received: 03/02/2018] [Accepted: 03/29/2018] [Indexed: 11/09/2022] Open
Abstract
Spontaneous aggregation of folded and soluble native proteins in vivo is still a poorly understood process. A prototypic example is the D76N mutant of beta-2 microglobulin (β2m) that displays an aggressive aggregation propensity. Here we investigate the dynamics of β2m by X-ray crystallography, solid-state NMR, and molecular dynamics simulations to unveil the effects of the D76N mutation. Taken together, our data highlight the presence of minor disordered substates in crystalline β2m. The destabilization of the outer strands of D76N β2m accounts for the increased aggregation propensity. Furthermore, the computational modeling reveals a network of interactions with residue D76 as a keystone: this model allows predicting the stability of several point mutants. Overall, our study shows how the study of intrinsic dynamics in crystallo can provide crucial answers on protein stability and aggregation propensity. The comprehensive approach here presented may well be suited for the study of other folded amyloidogenic proteins. The aggregation prone D76N beta-2 microglobulin mutant causes systemic amyloidosis. Here the authors combine crystallography, solid-state NMR, and computational studies and show that the D76N mutation increases protein dynamics and destabilizes the outer strands, which leads to an exposure of amyloidogenic parts explaining its aggregation propensity.
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Affiliation(s)
- Tanguy Le Marchand
- Centre de RMN à Très Hauts Champs, Institut des Sciences Analytiques (UMR 5280 CNRS/UCB Lyon 1/ENS Lyon), Université de Lyon, 69100, Villeurbanne, France
| | - Matteo de Rosa
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy
| | - Nicola Salvi
- Institut de Biologie Structurale, CNRS, CEA, UGA, 30044, Grenoble, France
| | - Benedetta Maria Sala
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy
| | - Loren B Andreas
- Centre de RMN à Très Hauts Champs, Institut des Sciences Analytiques (UMR 5280 CNRS/UCB Lyon 1/ENS Lyon), Université de Lyon, 69100, Villeurbanne, France
| | - Emeline Barbet-Massin
- Centre de RMN à Très Hauts Champs, Institut des Sciences Analytiques (UMR 5280 CNRS/UCB Lyon 1/ENS Lyon), Université de Lyon, 69100, Villeurbanne, France
| | - Pietro Sormanni
- Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Alberto Barbiroli
- Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente, Università degli Studi di Milano, 20133, Milano, Italy
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK
| | | | | | - Martino Bolognesi
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy.,Centro di Ricerca Pediatrica Romeo ed Enrica Invernizzi, Università degli Studi di Milano, 20133, Milano, Italy
| | - Lyndon Emsley
- Centre de RMN à Très Hauts Champs, Institut des Sciences Analytiques (UMR 5280 CNRS/UCB Lyon 1/ENS Lyon), Université de Lyon, 69100, Villeurbanne, France
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK
| | - Martin Blackledge
- Institut de Biologie Structurale, CNRS, CEA, UGA, 30044, Grenoble, France
| | - Carlo Camilloni
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy.
| | - Guido Pintacuda
- Centre de RMN à Très Hauts Champs, Institut des Sciences Analytiques (UMR 5280 CNRS/UCB Lyon 1/ENS Lyon), Université de Lyon, 69100, Villeurbanne, France.
| | - Stefano Ricagno
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy.
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25
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Cazzola M, Arosio P, Bellotti V, Bergamaschi G, Dezza L, Iacobello C, Ruggeri G, Zappone E, Albertini A, Ascari E. Immunological Reactivity of Serum Ferritin in Patients with Malignancy. Tumori 2018; 71:547-54. [PMID: 4082287 DOI: 10.1177/030089168507100606] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Serum ferritin has been suggested as a tumor marker in the diagnosis of certain malignancies and for following the activity or dissemination of the malignant process. Since neoplastic tissues generally contain more acidic isoferritins than their normal tissue counterparts, it has also been suggested that the specific assay of such isoferritins in serum may be of particular value in the diagnosis of malignancy. In this work, we have evaluated ferritin concentration in the serum of normal subjects and patients with acute nonlymphocytic leukemia, Hodgkin's disease, breast cancer and lung cancer by simultaneously using three different immunoassays: an immunoradiometric assay based on polyclonal antibodies against human liver (basic, L-subunit rich) ferritin, a radioimmunoassay based on polyclonad antibodies against HeLa cell (acidic, H-subunit rich) ferritin, and an immunoradiometric assay based on the monoclonal antibody 2A4 raised against human heart (acidic, H-subunit rich) ferritin. Most of the patients studied had increased values for liver-type ferritin in the absence of increased iron stores. Binding of serum ferritin to concanavalin A did not prove to be useful in distinguishing a tumor-specific basic isoferritin. The HeLa ferritin assay was found to be less specific than the heart ferritin assay in the detection of acidic isoferritins, and did not provide any advantage over the liver assay in detecting the increased levels of serum ferritin associated with malignant disease. Heart-type ferritin was found in one-fifth of normal sera and 64% of sera from patients with malignancy. Values were very low compared with those for basic ferritin, ranging from less than 0.1 to 17% of total serum ferritin (geometric mean value 1.3%) in patients with malignancy. These findings indicate that at present there is little application for serum ferritin immunoassays based on antibodies to HeLa cell or heart ferritin in the diagnosis or monitoring of malignant disease. This seems to be due to the presence in human serum of biding factors which are responsible for the rapid clearance of acidic isoferritins from the circulation. The serum concentration of basic ferritin, however, can be useful in the diagnosis and management of some malignancies, and it is possible that studies on cell isoferritins can be important in biologic monitoring of neoplastic disorders. It should also be noted that the increased levels of serum ferritin found in patients with malignancy can exert adverse effects on the host immune response and perhaps an inhibitory effect on hematopoiesis.
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26
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Brancolini G, Maschio MC, Cantarutti C, Corazza A, Fogolari F, Bellotti V, Corni S, Esposito G. Citrate stabilized gold nanoparticles interfere with amyloid fibril formation: D76N and ΔN6 β2-microglobulin variants. Nanoscale 2018; 10:4793-4806. [PMID: 29469914 DOI: 10.1039/c7nr06808e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Protein aggregation including the formation of dimers and multimers in solution, underlies an array of human diseases such as systemic amyloidosis which is a fatal disease caused by misfolding of native globular proteins damaging the structure and function of affected organs. Different kind of interactors can interfere with the formation of protein dimers and multimers in solution. A very special class of interactors are nanoparticles thanks to the extremely efficient extension of their interaction surface. In particular citrate-coated gold nanoparticles (cit-AuNPs) were recently investigated with amyloidogenic protein β2-microglobulin (β2m). Here we present the computational studies on two challenging models known for their enhanced amyloidogenic propensity, namely ΔN6 and D76N β2m naturally occurring variants, and disclose the role of cit-AuNPs on their fibrillogenesis. The proposed interaction mechanism lies in the interference of the cit-AuNPs with the protein dimers at the early stages of aggregation, that induces dimer disassembling. As a consequence, natural fibril formation can be inhibited. Relying on the comparison between atomistic simulations at multiple levels (enhanced sampling molecular dynamics and Brownian dynamics) and protein structural characterisation by NMR, we demonstrate that the cit-AuNPs interactors are able to inhibit protein dimer assembling. As a consequence, the natural fibril formation is also inhibited, as found in experiment.
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Affiliation(s)
- Giorgia Brancolini
- Center S3, CNR Institute Nanoscience, Via Campi 213/A, 41125 Modena, Italy.
| | | | - Cristina Cantarutti
- Dipartimento di Scienza Mediche e Biologiche (DSMB), University of Udine, Piazzale Kolbe 3, 33100 Udine, Italy
| | - Alessandra Corazza
- Dipartimento di Scienza Mediche e Biologiche (DSMB), University of Udine, Piazzale Kolbe 3, 33100 Udine, Italy and Istituto Nazionale Biostrutture e Biosistemi, Viale medaglie d'Oro, 305 - 00136 Roma, Italy
| | - Federico Fogolari
- Dipartimento di Scienza Mediche e Biologiche (DSMB), University of Udine, Piazzale Kolbe 3, 33100 Udine, Italy and Istituto Nazionale Biostrutture e Biosistemi, Viale medaglie d'Oro, 305 - 00136 Roma, Italy
| | - Vittorio Bellotti
- Dipartimento di Medicina Molecolare, Universita' di Pavia, Via Taramelli 3, 27100 Pavia, Italy and Istituto Nazionale Biostrutture e Biosistemi, Viale medaglie d'Oro, 305 - 00136 Roma, Italy and Division of Medicine, University College of London, London NW3 2PF, UK
| | - Stefano Corni
- Department of Chemical Science, University of Padova, via VIII Febbraio 2, 35122 Padova and Center S3, CNR Institute Nanoscience, Via Campi 213/A, 41125 Modena, Italy
| | - Gennaro Esposito
- Center S3, CNR Institute Nanoscience, Via Campi 213/A, 41125 Modena, Italy. and Istituto Nazionale Biostrutture e Biosistemi, Viale medaglie d'Oro, 305 - 00136 Roma, Italy and Science and Math Division, New York University at Abu Dhabi, Abu Dhabi, United Arab Emirates.
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27
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Cantarutti C, Bertoncin P, Posocco P, Hunashal Y, Giorgetti S, Bellotti V, Fogolari F, Esposito G. The interaction of β2-microglobulin with gold nanoparticles: impact of coating, charge and size. J Mater Chem B 2018; 6:5964-5974. [PMID: 32254716 DOI: 10.1039/c8tb01129j] [Citation(s) in RCA: 6] [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: 12/20/2022]
Abstract
Gold nanoparticles (AuNPs) have been proved to be ideal scaffolds to build nanodevices whose performance can be tuned by changing their coating.
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Affiliation(s)
| | - Paolo Bertoncin
- Dipartimento di Scienze della Vita
- Università di Trieste
- 34128 Trieste
- Italy
| | - Paola Posocco
- Dipartimento di Ingegneria ed Architettura
- Università di Trieste
- 34127 Trieste
- Italy
| | | | - Sofia Giorgetti
- Dipartimento di Medicina Molecolare
- Università di Pavia
- 27100 Pavia
- Italy
| | - Vittorio Bellotti
- Dipartimento di Medicina Molecolare
- Università di Pavia
- 27100 Pavia
- Italy
- Division of Medicine
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28
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Cantarutti C, Raj G, Fogolari F, Giorgetti S, Corazza A, Bellotti V, Naumov P, Esposito G. Interference of citrate-stabilized gold nanoparticles with β2-microglobulin oligomeric association. Chem Commun (Camb) 2018; 54:5422-5425. [DOI: 10.1039/c8cc01053f] [Citation(s) in RCA: 11] [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: 01/09/2023]
Abstract
Citrate-coated gold nanoparticles interfere with the association equilibria of β2-microglobulin and thus inhibit the early events of fibrillogenesis.
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Affiliation(s)
| | - Gijo Raj
- New York University Abu Dhabi
- Abu Dhabi
- United Arab Emirates
| | | | - Sofia Giorgetti
- Dipartimento di Medicina Molecolare
- Università di Pavia
- 27100 Pavia
- Italy
| | | | - Vittorio Bellotti
- Dipartimento di Medicina Molecolare
- Università di Pavia
- 27100 Pavia
- Italy
- Division of Medicine
| | - Panče Naumov
- New York University Abu Dhabi
- Abu Dhabi
- United Arab Emirates
| | - Gennaro Esposito
- New York University Abu Dhabi
- Abu Dhabi
- United Arab Emirates
- INBB
- 00136 Roma
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29
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Canetti D, Rendell NB, Di Vagno L, Gilbertson JA, Rowczenio D, Rezk T, Gillmore JD, Hawkins PN, Verona G, Mangione PP, Giorgetti S, Mauri P, Motta S, De Palma A, Bellotti V, Taylor GW. Misidentification of transthyretin and immunoglobulin variants by proteomics due to methyl lysine formation in formalin-fixed paraffin-embedded amyloid tissue. Amyloid 2017; 24:233-241. [PMID: 29016222 DOI: 10.1080/13506129.2017.1385452] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Proteomics is becoming the de facto gold standard for identifying amyloid proteins and is now used routinely in a number of centres. The technique is compound class independent and offers the added ability to identify variant and modified proteins. We re-examined proteomics results from a number of formalin-fixed paraffin-embedded amyloid samples, which were positive for transthyretin (TTR) by immunohistochemistry and proteomics, using the UniProt human protein database modified to include TTR variants. The amyloidogenic variant, V122I TTR, was incorrectly identified in 26/27 wild-type and non-V122I variant samples due to its close mass spectral similarity with the methyl lysine-modified WT peptide [126KMe]105-127 (p.[146 KMe]125-147) generated during formalin fixation. Similarly, the methyl lysine peptide, [50KMe]43-59, from immunoglobulin lambda light chain constant region was also misidentified as arising from a rare myeloma-derived lambda variant V49I. These processing-derived modifications are not present in fresh cardiac tissue, non-fixed fat nor serum and do not materially affect the identification of amyloid proteins. They could result in the incorrect assignment of a variant, and this may have consequences for the immediate family who will require genetic counselling and potentially early clinical intervention. As proteomics becomes a routine clinical test for amyloidosis, it becomes important to be aware of potentially confounding issues such as formalin-mediated lysine methylation, and how these may influence diagnosis and possibly treatment.
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Affiliation(s)
- Diana Canetti
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK.,c Department of Molecular Medicine , Institute of Biochemistry, University of Pavia , Pavia , Italy.,d CEINGE , University of Naples , Naples , Italy.,e Department of Chemical Sciences , University of Naples , Naples , Italy
| | - Nigel Brian Rendell
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Lucia Di Vagno
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Janet A Gilbertson
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Dorota Rowczenio
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Tamar Rezk
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Julian D Gillmore
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Phillip N Hawkins
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Guglielmo Verona
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
| | - Palma Patrizia Mangione
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK.,c Department of Molecular Medicine , Institute of Biochemistry, University of Pavia , Pavia , Italy
| | - Sofia Giorgetti
- c Department of Molecular Medicine , Institute of Biochemistry, University of Pavia , Pavia , Italy
| | - Pierluigi Mauri
- f Proteomics and Metabolomics Laboratory , CNR-ITB , Segrate , Italy
| | - Sara Motta
- f Proteomics and Metabolomics Laboratory , CNR-ITB , Segrate , Italy
| | | | - Vittorio Bellotti
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK.,c Department of Molecular Medicine , Institute of Biochemistry, University of Pavia , Pavia , Italy
| | - Graham W Taylor
- a Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , University College London , London , UK.,b National Amyloidosis Centre, Division of Medicine , University College London , London , UK
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30
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Mangione PP, Mazza G, Gilbertson JA, Rendell NB, Canetti D, Giorgetti S, Frenguelli L, Curti M, Rezk T, Raimondi S, Pepys MB, Hawkins PN, Gillmore JD, Taylor GW, Pinzani M, Bellotti V. Increasing the accuracy of proteomic typing by decellularisation of amyloid tissue biopsies. J Proteomics 2017; 165:113-118. [PMID: 28647518 PMCID: PMC5571436 DOI: 10.1016/j.jprot.2017.06.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 06/04/2017] [Accepted: 06/19/2017] [Indexed: 12/19/2022]
Abstract
Diagnosis and treatment of systemic amyloidosis depend on accurate identification of the specific amyloid fibril protein forming the tissue deposits. Confirmation of monoclonal immunoglobulin light chain amyloidosis (AL), requiring cytotoxic chemotherapy, and avoidance of such treatment in non-AL amyloidosis, are particularly important. Proteomic analysis characterises amyloid proteins directly. It complements immunohistochemical staining of amyloid to identify fibril proteins and gene sequencing to identify mutations in the fibril precursors. However, proteomics sometimes detects more than one potentially amyloidogenic protein, especially immunoglobulins and transthyretin which are abundant plasma proteins. Ambiguous results are most challenging in the elderly as both AL and transthyretin (ATTR) amyloidosis are usually present in this group. We have lately described a procedure for tissue decellularisation which retains the structure, integrity and composition of amyloid but removes proteins that are not integrated within the deposits. Here we show that use of this procedure before proteomic analysis eliminates ambiguity and improves diagnostic accuracy. SIGNIFICANCE Unequivocal identification of the protein causing amyloidosis disease is crucial for correct diagnosis and treatment. As a proof of principle, we selected a number of cardiac and fat tissue biopsies from patients with various types of amyloidosis and show that a classical procedure of decellularisation enhances the specificity of the identification of the culprit protein reducing ambiguity and the risk of misdiagnosis.
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Affiliation(s)
- P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK; Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Giuseppe Mazza
- Institute for Liver and Digestive Health, University College London, London, UK
| | - Janet A Gilbertson
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Nigel B Rendell
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK
| | - Diana Canetti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK; Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy; CEINGE and Department of Chemical Sciences, University of Naples, Naples, Italy
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Luca Frenguelli
- Institute for Liver and Digestive Health, University College London, London, UK
| | - Marco Curti
- Institute for Liver and Digestive Health, University College London, London, UK
| | - Tamer Rezk
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Mark B Pepys
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK; National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Philip N Hawkins
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Julian D Gillmore
- National Amyloidosis Centre, University College London and Royal Free Hospital, London, UK
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK
| | - Massimo Pinzani
- Institute for Liver and Digestive Health, University College London, London, UK.
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, UK; Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy.
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31
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Sartiani L, Bucciantini M, Spinelli V, Leri M, Natalello A, Nosi D, Maria Doglia S, Relini A, Penco A, Giorgetti S, Gerace E, Mannaioni G, Bellotti V, Rigacci S, Cerbai E, Stefani M. Biochemical and Electrophysiological Modification of Amyloid Transthyretin on Cardiomyocytes. Biophys J 2017; 111:2024-2038. [PMID: 27806283 DOI: 10.1016/j.bpj.2016.09.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 07/26/2016] [Accepted: 09/06/2016] [Indexed: 12/26/2022] Open
Abstract
Transthyretin (TTR) amyloidoses are familial or sporadic degenerative conditions that often feature heavy cardiac involvement. Presently, no effective pharmacological therapy for TTR amyloidoses is available, mostly due to a substantial lack of knowledge about both the molecular mechanisms of TTR aggregation in tissue and the ensuing functional and viability modifications that occur in aggregate-exposed cells. TTR amyloidoses are of particular interest regarding the relation between functional and viability impairment in aggregate-exposed excitable cells such as peripheral neurons and cardiomyocytes. In particular, the latter cells provide an opportunity to investigate in parallel the electrophysiological and biochemical modifications that take place when the cells are exposed for various lengths of time to variously aggregated wild-type TTR, a condition that characterizes senile systemic amyloidosis. In this study, we investigated biochemical and electrophysiological modifications in cardiomyocytes exposed to amyloid oligomers or fibrils of wild-type TTR or to its T4-stabilized form, which resists tetramer disassembly, misfolding, and aggregation. Amyloid TTR cytotoxicity results in mitochondrial potential modification, oxidative stress, deregulation of cytoplasmic Ca2+ levels, and Ca2+ cycling. The altered intracellular Ca2+ cycling causes a prolongation of the action potential, as determined by whole-cell recordings of action potentials on isolated mouse ventricular myocytes, which may contribute to the development of cellular arrhythmias and conduction alterations often seen in patients with TTR amyloidosis. Our data add information about the biochemical, functional, and viability alterations that occur in cardiomyocytes exposed to aggregated TTR, and provide clues as to the molecular and physiological basis of heart dysfunction in sporadic senile systemic amyloidosis and familial amyloid cardiomyopathy forms of TTR amyloidoses.
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Affiliation(s)
- Laura Sartiani
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy; Center of Molecular Medicine, University of Florence, Florence, Italy
| | - Monica Bucciantini
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio,", University of Florence, Florence, Italy; Research Centre on the Molecular Basis of Neurodegeneration, University of Florence, Florence, Italy.
| | - Valentina Spinelli
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy; Center of Molecular Medicine, University of Florence, Florence, Italy
| | - Manuela Leri
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio,", University of Florence, Florence, Italy
| | - Antonino Natalello
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Daniele Nosi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Silvia Maria Doglia
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | | | - Amanda Penco
- Department of Physics, University of Genoa, Genoa, Italy
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Elisabetta Gerace
- Department of Health Science, University of Florence, Florence, Italy
| | - Guido Mannaioni
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Vittorio Bellotti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy; Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom
| | - Stefania Rigacci
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio,", University of Florence, Florence, Italy
| | - Elisabetta Cerbai
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy; Center of Molecular Medicine, University of Florence, Florence, Italy; Research Centre on the Molecular Basis of Neurodegeneration, University of Florence, Florence, Italy
| | - Massimo Stefani
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio,", University of Florence, Florence, Italy; Research Centre on the Molecular Basis of Neurodegeneration, University of Florence, Florence, Italy
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32
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Raimondi S, Porcari R, Mangione PP, Verona G, Marcoux J, Giorgetti S, Taylor GW, Ellmerich S, Ballico M, Zanini S, Pardon E, Al-Shawi R, Simons JP, Corazza A, Fogolari F, Leri M, Stefani M, Bucciantini M, Gillmore JD, Hawkins PN, Valli M, Stoppini M, Robinson CV, Steyaert J, Esposito G, Bellotti V. A specific nanobody prevents amyloidogenesis of D76N β 2-microglobulin in vitro and modifies its tissue distribution in vivo. Sci Rep 2017; 7:46711. [PMID: 28429761 PMCID: PMC5399440 DOI: 10.1038/srep46711] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 12/02/2016] [Accepted: 03/23/2017] [Indexed: 11/24/2022] Open
Abstract
Systemic amyloidosis is caused by misfolding and aggregation of globular proteins in vivo for which effective treatments are urgently needed. Inhibition of protein self-aggregation represents an attractive therapeutic strategy. Studies on the amyloidogenic variant of β2-microglobulin, D76N, causing hereditary systemic amyloidosis, have become particularly relevant since fibrils are formed in vitro in physiologically relevant conditions. Here we compare the potency of two previously described inhibitors of wild type β2-microglobulin fibrillogenesis, doxycycline and single domain antibodies (nanobodies). The β2-microglobulin -binding nanobody, Nb24, more potently inhibits D76N β2-microglobulin fibrillogenesis than doxycycline with complete abrogation of fibril formation. In β2-microglobulin knock out mice, the D76N β2-microglobulin/ Nb24 pre-formed complex, is cleared from the circulation at the same rate as the uncomplexed protein; however, the analysis of tissue distribution reveals that the interaction with the antibody reduces the concentration of the variant protein in the heart but does not modify the tissue distribution of wild type β2-microglobulin. These findings strongly support the potential therapeutic use of this antibody in the treatment of systemic amyloidosis.
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Affiliation(s)
- Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, 27100 Pavia, Italy
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - P Patrizia Mangione
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, 27100 Pavia, Italy.,Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Guglielmo Verona
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Julien Marcoux
- Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, 27100 Pavia, Italy
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Stephan Ellmerich
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Maurizio Ballico
- Science and Math Division, New York University at Abu Dhabi, Abu Dhabi, UAE
| | - Stefano Zanini
- Science and Math Division, New York University at Abu Dhabi, Abu Dhabi, UAE
| | - Els Pardon
- Structural Biology Research Centre, VIB, Pleinlaan 2, 1050, Brussel, Belgium.,Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussel, Belgium
| | - Raya Al-Shawi
- Centre for Biomedical Science, Division of Medicine, University College London, London NW3 2PF, UK
| | - J Paul Simons
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Alessandra Corazza
- Department of Medical and Biological Sciences (DSMB), University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy.,Istituto Nazionale Biostrutture e Biosistemi, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - Federico Fogolari
- Istituto Nazionale Biostrutture e Biosistemi, Viale Medaglie d'Oro 305, 00136 Roma, Italy.,Department of Mathematics, Computer Science and Physics, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy
| | - Manuela Leri
- Department of Biomedical, Experimental and Clinical Sciences 'Mario Serio', University of Florence, Viale Morgagni 50, 50134 Florence, Italy
| | - Massimo Stefani
- Department of Biomedical, Experimental and Clinical Sciences 'Mario Serio', University of Florence, Viale Morgagni 50, 50134 Florence, Italy.,Research Centre for Molecular Basis of Neurodegeneration, 50134 Florence, Italy
| | - Monica Bucciantini
- Department of Biomedical, Experimental and Clinical Sciences 'Mario Serio', University of Florence, Viale Morgagni 50, 50134 Florence, Italy.,Research Centre for Molecular Basis of Neurodegeneration, 50134 Florence, Italy
| | - Julian D Gillmore
- National Amyloidosis Centre, University College London, London NW3 2PF, UK
| | - Philip N Hawkins
- National Amyloidosis Centre, University College London, London NW3 2PF, UK
| | - Maurizia Valli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, 27100 Pavia, Italy
| | - Monica Stoppini
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, 27100 Pavia, Italy
| | - Carol V Robinson
- Department of Chemistry, University of Oxford, Oxford OX1 3TA, UK
| | - Jan Steyaert
- Structural Biology Research Centre, VIB, Pleinlaan 2, 1050, Brussel, Belgium.,Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussel, Belgium
| | - Gennaro Esposito
- Science and Math Division, New York University at Abu Dhabi, Abu Dhabi, UAE.,Istituto Nazionale Biostrutture e Biosistemi, Viale Medaglie d'Oro 305, 00136 Roma, Italy.,Department of Mathematics, Computer Science and Physics, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy
| | - Vittorio Bellotti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, 27100 Pavia, Italy.,Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
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33
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Gómez EM, Cardenas C, Astarita E, Bellotti V, Tresserra F, Natera LG, Ribas M. Labral reconstruction with tendon allograft: histological findings show revascularization at 8 weeks from implantation. J Hip Preserv Surg 2017. [PMID: 28630724 PMCID: PMC5467408 DOI: 10.1093/jhps/hnx001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This description shows the histological findings of a peroneus brevis tendon allograft used for labral reconstruction, implanted 8 weeks before being retrieved due to a postoperative complication unrelated to the graft. As far as we have knowledge this is the first description about revascularization of an allograft used for hip labral reconstruction. The histological report of the removed peroneus brevis tendon allograft shows evidence of vascular ingrowth represented by small vessels with a thin muscular wall in all layers of the graft and cellular migration mainly represented by mature fibroblasts.
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Affiliation(s)
- Esther Moya Gómez
- 1. Department of Orthopaedic Surgery, Hip Unit, University Hospital Quiron Dexeus, Street Sabino de Arana 5-19, Barcelona 08028, Spain
| | - Carlomagno Cardenas
- 1. Department of Orthopaedic Surgery, Hip Unit, University Hospital Quiron Dexeus, Street Sabino de Arana 5-19, Barcelona 08028, Spain
| | - Emmanuelle Astarita
- 1. Department of Orthopaedic Surgery, Hip Unit, University Hospital Quiron Dexeus, Street Sabino de Arana 5-19, Barcelona 08028, Spain
| | - Vittorio Bellotti
- 1. Department of Orthopaedic Surgery, Hip Unit, University Hospital Quiron Dexeus, Street Sabino de Arana 5-19, Barcelona 08028, Spain
| | - Francesc Tresserra
- 2. Department of Pathology, University Hospital Quiron Dexeus, Street Sabino de Arana 5-19, Barcelona 08028, Spain
| | - Luis Gerardo Natera
- 3. Department of Orthopaedics and Traumatology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, street Sant Quintí 89, Barcelona, Catalunya 08026, Spain.,4. Department of Orthopaedics and Traumatology, Hospital General de Catalunya, Street Pedro i Pons 1, Sant Cugat del Vallés, Barcelona 08190, Spain
| | - Manel Ribas
- 1. Department of Orthopaedic Surgery, Hip Unit, University Hospital Quiron Dexeus, Street Sabino de Arana 5-19, Barcelona 08028, Spain
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34
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Cantarutti C, Raimondi S, Brancolini G, Corazza A, Giorgetti S, Ballico M, Zanini S, Palmisano G, Bertoncin P, Marchese L, Patrizia Mangione P, Bellotti V, Corni S, Fogolari F, Esposito G. Citrate-stabilized gold nanoparticles hinder fibrillogenesis of a pathological variant of β 2-microglobulin. Nanoscale 2017; 9:3941-3951. [PMID: 28265615 DOI: 10.1039/c6nr09362k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanoparticles have repeatedly been shown to enhance fibril formation when assayed with amyloidogenic proteins. Recently, however, evidence casting some doubt about the generality of this conclusion started to emerge. Therefore, to investigate further the influence of nanoparticles on the fibrillation process, we used a naturally occurring variant of the paradigmatic amyloidogenic protein β2-microglobulin (β2m), namely D76N β2m where asparagine replaces aspartate at position 76. This variant is responsible for aggressive systemic amyloidosis. After characterizing the interaction of the variant with citrate-stabilized gold nanoparticles (Cit-AuNPs) by NMR and modeling, we analyzed the fibril formation by three different methods: thioflavin T fluorescence, native agarose gel electrophoresis and transmission electron microscopy. The NMR evidence indicated a fast-exchange interaction involving preferentially specific regions of the protein that proved, by subsequent modeling, to be consistent with a dimeric adduct interacting with Cit-AuNPs. The fibril detection assays showed that AuNPs are able to hamper D76N β2m fibrillogenesis through an effective interaction that competes with protofibril formation or recruitment. These findings open promising perspectives for the optimization of the nanoparticle surface to design tunable interactions with proteins.
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Affiliation(s)
| | - Sara Raimondi
- Dipartimento Medicina Molecolare, Università di Pavia, Via Taramelli 3, 27100 Pavia, Italy and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | | | - Alessandra Corazza
- DSMB, Università di Udine, P.le Kolbe 4, 33100 Udine, Italy. and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - Sofia Giorgetti
- Dipartimento Medicina Molecolare, Università di Pavia, Via Taramelli 3, 27100 Pavia, Italy and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - Maurizio Ballico
- Science and Math Division, New York University at Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Stefano Zanini
- Science and Math Division, New York University at Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Giovanni Palmisano
- Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates
| | - Paolo Bertoncin
- Dipartimento Scienze della Vita, Università di Trieste, Via Weiss 2, 34128 Trieste, Italy
| | - Loredana Marchese
- Dipartimento Medicina Molecolare, Università di Pavia, Via Taramelli 3, 27100 Pavia, Italy and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - P Patrizia Mangione
- Dipartimento Medicina Molecolare, Università di Pavia, Via Taramelli 3, 27100 Pavia, Italy and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy and Division of Medicine, University College of London, London NW3 2PF, UK
| | - Vittorio Bellotti
- Dipartimento Medicina Molecolare, Università di Pavia, Via Taramelli 3, 27100 Pavia, Italy and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy and Division of Medicine, University College of London, London NW3 2PF, UK
| | - Stefano Corni
- CNR Istituto Nanoscienze, Via Campi 213/A, 41125 Modena, Italy.
| | - Federico Fogolari
- DSMB, Università di Udine, P.le Kolbe 4, 33100 Udine, Italy. and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - Gennaro Esposito
- DSMB, Università di Udine, P.le Kolbe 4, 33100 Udine, Italy. and INBB, Viale Medaglie d'Oro 305, 00136 Roma, Italy and Science and Math Division, New York University at Abu Dhabi, Abu Dhabi, United Arab Emirates
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Verona G, Mangione PP, Raimondi S, Giorgetti S, Faravelli G, Porcari R, Corazza A, Gillmore JD, Hawkins PN, Pepys MB, Taylor GW, Bellotti V. Inhibition of the mechano-enzymatic amyloidogenesis of transthyretin: role of ligand affinity, binding cooperativity and occupancy of the inner channel. Sci Rep 2017; 7:182. [PMID: 28298647 PMCID: PMC5428290 DOI: 10.1038/s41598-017-00338-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 11/15/2016] [Accepted: 02/21/2017] [Indexed: 11/17/2022] Open
Abstract
Dissociation of the native transthyretin (TTR) tetramer is widely accepted as the critical step in TTR amyloid fibrillogenesis. It is modelled by exposure of the protein to non-physiological low pH in vitro and is inhibited by small molecule compounds, such as the drug tafamidis. We have recently identified a new mechano-enzymatic pathway of TTR fibrillogenesis in vitro, catalysed by selective proteolytic cleavage, which produces a high yield of genuine amyloid fibrils. This pathway is efficiently inhibited only by ligands that occupy both binding sites in TTR. Tolcapone, which is bound with similar high affinity in both TTR binding sites without the usual negative cooperativity, is therefore of interest. Here we show that TTR fibrillogenesis by the mechano-enzymatic pathway is indeed more potently inhibited by tolcapone than by tafamidis but neither, even in large molar excess, completely prevents amyloid fibril formation. In contrast, mds84, the prototype of our previously reported bivalent ligand TTR ‘superstabiliser’ family, is notably more potent than the monovalent ligands and we show here that this apparently reflects the critical additional interactions of its linker within the TTR central channel. Our findings have major implications for therapeutic approaches in TTR amyloidosis.
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Affiliation(s)
- Guglielmo Verona
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK
| | - P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia, 27100, Italy
| | - Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia, 27100, Italy
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia, 27100, Italy
| | - Giulia Faravelli
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia, 27100, Italy
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK
| | - Alessandra Corazza
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK.,Department of Medical and Biological Sciences (DSMB), University of Udine, Piazzale Kolbe 4, 33100, Udine, Italy
| | - Julian D Gillmore
- National Amyloidosis Centre, University College London, London, NW3 2PF, UK
| | - Philip N Hawkins
- National Amyloidosis Centre, University College London, London, NW3 2PF, UK
| | - Mark B Pepys
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK.,National Amyloidosis Centre, University College London, London, NW3 2PF, UK
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London, NW3 2PF, UK. .,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia, 27100, Italy.
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36
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Ozawa D, Nomura R, Mangione PP, Hasegawa K, Okoshi T, Porcari R, Bellotti V, Naiki H. Antiamyloidogenic and proamyloidogenic chaperone effects of C-reactive protein and serum amyloid P component. Amyloid 2017; 24:28-29. [PMID: 28434325 DOI: 10.1080/13506129.2017.1295943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Daisaku Ozawa
- a Department of Pathological Sciences , Faculty of Medical Sciences, University of Fukui , Fukui , Japan and
| | - Ryo Nomura
- a Department of Pathological Sciences , Faculty of Medical Sciences, University of Fukui , Fukui , Japan and
| | - P Patrizia Mangione
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London , London , UK
| | - Kazuhiro Hasegawa
- a Department of Pathological Sciences , Faculty of Medical Sciences, University of Fukui , Fukui , Japan and
| | - Tadakazu Okoshi
- a Department of Pathological Sciences , Faculty of Medical Sciences, University of Fukui , Fukui , Japan and
| | - Riccardo Porcari
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London , London , UK
| | - Vittorio Bellotti
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London , London , UK
| | - Hironobu Naiki
- a Department of Pathological Sciences , Faculty of Medical Sciences, University of Fukui , Fukui , Japan and
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de Rosa M, Halabelian L, Barbiroli A, Bolognesi M, Bellotti V, Ricagno S. An Asp to Asn mutation is a toxic trigger in beta-2 microglobulin: structure and biophysics. Amyloid 2017; 24:15-16. [PMID: 28434301 DOI: 10.1080/13506129.2016.1272450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Matteo de Rosa
- a Department of Biosciences , University of Milan, Milan , Italy.,b CNR Biophysics Institute , Milan , Italy
| | - Levon Halabelian
- a Department of Biosciences , University of Milan, Milan , Italy
| | | | | | - Vittorio Bellotti
- d Center for Amyloidosis and Acute Phase proteins, UCL , London , UK
| | - Stefano Ricagno
- a Department of Biosciences , University of Milan, Milan , Italy
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38
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De Franceschi G, Fecchio C, Sharon R, Schapira AHV, Proukakis C, Bellotti V, de Laureto PP. α-Synuclein structural features inhibit harmful polyunsaturated fatty acid oxidation, suggesting roles in neuroprotection. J Biol Chem 2017; 292:6927-6937. [PMID: 28232489 PMCID: PMC5409462 DOI: 10.1074/jbc.m116.765149] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 02/22/2017] [Indexed: 01/23/2023] Open
Abstract
α-Synuclein (aS) is a protein abundant in presynaptic nerve terminals in Parkinson disease (PD) and is a major component of intracellular Lewy bodies, the pathological hallmark of neurodegenerative disorders such as PD. Accordingly, the relationships between aS structure, its interaction with lipids, and its involvement in neurodegeneration have attracted great interest. Previously, we reported on the interaction of aS with brain polyunsaturated fatty acids, in particular docosahexaenoic acid (DHA). aS acquires an α-helical secondary structure in the presence of DHA and, in turn, affects DHA structural and aggregative properties. Moreover, aS forms a covalent adduct with DHA. Here, we provide evidence that His-50 is the main site of this covalent modification. To better understand the role of His-50, we analyzed the effect of DHA on aS-derived species: a naturally occurring variant, H50Q; an oxidized aS in which all methionines are sulfoxides (aS4ox); a fully lysine-alkylated aS (acetyl-aS); and aS fibrils, testing their ability to be chemically modified by DHA. We show, by mass spectrometry and spectroscopic techniques, that H50Q and aS4ox are modified by DHA, whereas acetyl-aS is not. We correlated this modification with aS structural features, and we suggest a possible functional role of aS in sequestering the early peroxidation products of fatty acids, thereby reducing the level of highly reactive lipid species. Finally, we show that fibrillar aS loses almost 80% of its scavenging activity, thus lacking a potentially protective function. Our findings linking aS scavenging activity with brain lipid composition suggest a possible etiological mechanism in some neurodegenerative disorders.
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Affiliation(s)
- Giorgia De Franceschi
- From the Department of Pharmaceutical Sciences, CRIBI, Biotechnology Centre, University of Padova, 35121 Padova, Italy
| | - Chiara Fecchio
- From the Department of Pharmaceutical Sciences, CRIBI, Biotechnology Centre, University of Padova, 35121 Padova, Italy
| | - Ronit Sharon
- the Department of Biochemistry and Molecular Biology, IMRIC, The Hebrew University-Hadassah Medical School, 9112102 Jerusalem, Israel
| | - Anthony H V Schapira
- the Department of Clinical Neuroscience, Institute of Neurology, University College London, NW32PF London, United Kingdom
| | - Christos Proukakis
- the Department of Clinical Neuroscience, Institute of Neurology, University College London, NW32PF London, United Kingdom
| | - Vittorio Bellotti
- the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, United Kingdom, and.,the Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy
| | - Patrizia Polverino de Laureto
- From the Department of Pharmaceutical Sciences, CRIBI, Biotechnology Centre, University of Padova, 35121 Padova, Italy,
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39
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Moya E, Natera LG, Cardenas C, Astarita E, Bellotti V, Ribas M. Reconstruction of Massive Posterior Nonrepairable Acetabular Labral Tears With Peroneus Brevis Tendon Allograft: Arthroscopy-Assisted Mini-Open Approach. Arthrosc Tech 2016; 5:e1015-e1022. [PMID: 27909669 PMCID: PMC5124060 DOI: 10.1016/j.eats.2016.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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] [Received: 11/28/2015] [Accepted: 05/10/2016] [Indexed: 02/03/2023] Open
Abstract
Many of the described labral-reconstruction procedures are purely arthroscopic. This approach only allows segmentary reconstructions. For more extensive reconstructions, surgical dislocation of the hip still represents the more suitable approach. We present an arthroscopy-assisted procedure combined with an anterior mini-open approach, which could be considered for reconstruction of nonrepairable labral lesions located in the posterior aspect of the acetabulum and massive reconstructions in cases of global-pincer femoroacetabular impingement and protrusio acetabuli. Our technique saves the morbidity that might be related to the surgical dislocation of the hip and incorporates a peroneus brevis tendon allograft. This option may restore the anatomy and labral function without morbidity at the donor site, as well as remove graft length restrictions during massive reconstructions.
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Affiliation(s)
- Esther Moya
- University Hospital Quiron Dexeus, Hip Unit - Department of Orthopaedic Surgery, Barcelona, Spain,Address correspondence to Esther Moya, M.D., Department of Orthopaedic Surgery, University Hospital Quiron Dexeus, Street Sabino de Arana 5-19, 08028 Barcelona, Spain.Department of Orthopaedic SurgeryUniversity Hospital Quiron DexeusStreet Sabino de Arana 5-19Barcelona08028Spain
| | - Luis Gerardo Natera
- Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain,Hospital General de Catalunya, Barcelona, Spain
| | - Carlomagno Cardenas
- University Hospital Quiron Dexeus, Hip Unit - Department of Orthopaedic Surgery, Barcelona, Spain
| | - Emanuele Astarita
- University Hospital Quiron Dexeus, Hip Unit - Department of Orthopaedic Surgery, Barcelona, Spain
| | - Vittorio Bellotti
- University Hospital Quiron Dexeus, Hip Unit - Department of Orthopaedic Surgery, Barcelona, Spain
| | - Manel Ribas
- University Hospital Quiron Dexeus, Hip Unit - Department of Orthopaedic Surgery, Barcelona, Spain
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40
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Marcoux J, Mangione PP, Porcari R, Degiacomi MT, Verona G, Taylor GW, Giorgetti S, Raimondi S, Sanglier-Cianférani S, Benesch JLP, Cecconi C, Naqvi MM, Gillmore JD, Hawkins PN, Stoppini M, Robinson CV, Pepys MB, Bellotti V. A novel mechano-enzymatic cleavage mechanism underlies transthyretin amyloidogenesis. EMBO Mol Med 2016; 7:1337-49. [PMID: 26286619 PMCID: PMC4604687 DOI: 10.15252/emmm.201505357] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [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] [Indexed: 12/20/2022] Open
Abstract
The mechanisms underlying transthyretin-related amyloidosis in vivo remain unclear. The abundance of the 49–127 transthyretin fragment in ex vivo deposits suggests that a proteolytic cleavage has a crucial role in destabilizing the tetramer and releasing the highly amyloidogenic 49–127 truncated protomer. Here, we investigate the mechanism of cleavage and release of the 49–127 fragment from the prototypic S52P variant, and we show that the proteolysis/fibrillogenesis pathway is common to several amyloidogenic variants of transthyretin and requires the action of biomechanical forces provided by the shear stress of physiological fluid flow. Crucially, the non-amyloidogenic and protective T119M variant is neither cleaved nor generates fibrils under these conditions. We propose that a mechano-enzymatic mechanism mediates transthyretin amyloid fibrillogenesis in vivo. This may be particularly important in the heart where shear stress is greatest; indeed, the 49–127 transthyretin fragment is particularly abundant in cardiac amyloid. Finally, we show that existing transthyretin stabilizers, including tafamidis, inhibit proteolysis-mediated transthyretin fibrillogenesis with different efficiency in different variants; however, inhibition is complete only when both binding sites are occupied.
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Affiliation(s)
- Julien Marcoux
- Department of Chemistry, University of Oxford, Oxford, UK Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO), University of Strasbourg UDS, Strasbourg, France
| | - P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | | | - Guglielmo Verona
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Sarah Sanglier-Cianférani
- Laboratoire de Spectrométrie de Masse BioOrganique (LSMBO), University of Strasbourg UDS, Strasbourg, France
| | | | - Ciro Cecconi
- Institute of Nanoscience S3, Consiglio Nazionale delle Ricerche, Modena, Italy Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, Modena, Italy
| | - Mohsin M Naqvi
- Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, Modena, Italy
| | - Julian D Gillmore
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Philip N Hawkins
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Monica Stoppini
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | | | - Mark B Pepys
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London, UK Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
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41
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Ozawa D, Nomura R, Mangione PP, Hasegawa K, Okoshi T, Porcari R, Bellotti V, Naiki H. Multifaceted anti-amyloidogenic and pro-amyloidogenic effects of C-reactive protein and serum amyloid P component in vitro. Sci Rep 2016; 6:29077. [PMID: 27380955 PMCID: PMC4933921 DOI: 10.1038/srep29077] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 09/24/2015] [Accepted: 06/10/2016] [Indexed: 01/07/2023] Open
Abstract
C-reactive protein (CRP) and serum amyloid P component (SAP), two major classical pentraxins in humans, are soluble pattern recognition molecules that regulate the innate immune system, but their chaperone activities remain poorly understood. Here, we examined their effects on the amyloid fibril formation from Alzheimer’s amyloid β (Aβ) (1-40) and on that from D76N β2-microglobulin (β2-m) which is related to hereditary systemic amyloidosis. CRP and SAP dose-dependently and substoichiometrically inhibited both Aβ(1-40) and D76N β2-m fibril formation in a Ca2+-independent manner. CRP and SAP interacted with fresh and aggregated Aβ(1-40) and D76N β2-m on the fibril-forming pathway. Interestingly, in the presence of Ca2+, SAP first inhibited, then significantly accelerated D76N β2-m fibril formation. Electron microscopically, the surface of the D76N β2-m fibril was coated with pentameric SAP. These data suggest that SAP first exhibits anti-amyloidogenic activity possibly via A face, followed by pro-amyloidogenic activity via B face, proposing a model that the pro- and anti-amyloidogenic activities of SAP are not mutually exclusive, but reflect two sides of the same coin, i.e., the B and A faces, respectively. Finally, SAP inhibits the heat-induced amorphous aggregation of human glutathione S-transferase. A possible role of pentraxins to maintain extracellular proteostasis is discussed.
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Affiliation(s)
- Daisaku Ozawa
- Life Science Unit, Tenure-Track Program for Innovative Research, University of Fukui, Fukui 910-1193, Japan
| | - Ryo Nomura
- Department of Molecular Pathology, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan
| | - P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Kazuhiro Hasegawa
- Department of Molecular Pathology, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan
| | - Tadakazu Okoshi
- Department of Molecular Pathology, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, UK
| | - Hironobu Naiki
- Department of Molecular Pathology, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan
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42
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Ezechieli M, De Meo F, Bellotti V, Cardenas C, Astarita E, Cavaliere P, Windhagen H, Ribas M. Arthroscopic assisted mini-open approach of the hip: Early multicentric experience. Technol Health Care 2016; 24:359-65. [DOI: 10.3233/thc-151127] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Marco Ezechieli
- Clinic for Orthopaedic Surgery (in the Annastift Hospital), Hannover Medical School, Germany
| | | | | | | | | | | | - Henning Windhagen
- Clinic for Orthopaedic Surgery (in the Annastift Hospital), Hannover Medical School, Germany
| | - Manuel Ribas
- University Hospital Quiron Dexeus, Barcelona, Spain
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43
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Kisilevsky R, Raimondi S, Bellotti V. Historical and Current Concepts of Fibrillogenesis and In vivo Amyloidogenesis: Implications of Amyloid Tissue Targeting. Front Mol Biosci 2016; 3:17. [PMID: 27243018 PMCID: PMC4860540 DOI: 10.3389/fmolb.2016.00017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 03/22/2016] [Accepted: 04/21/2016] [Indexed: 12/22/2022] Open
Abstract
Historical and current concepts of in vitro fibrillogenesis are considered in the light of disorders in which amyloid is deposited at anatomic sites remote from the site of synthesis of the corresponding precursor protein. These clinical conditions set constraints on the interpretation of information derived from in vitro fibrillogenesis studies. They suggest that in addition to kinetic and thermodynamic factors identified in vitro, fibrillogenesis in vivo is determined by site specific factors most of which have yet to be identified.
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Affiliation(s)
- Robert Kisilevsky
- Department of Pathology and Molecular Medicine, Queen's University Kingston, ON, Canada
| | - Sara Raimondi
- Unit of Biochemistry, Department of Molecular Medicine, University of Pavia Pavia, Italy
| | - Vittorio Bellotti
- Unit of Biochemistry, Department of Molecular Medicine, University of PaviaPavia, Italy; Wolfson Drug Discovery Unit, Division of Medicine, Centre for Amyloidosis and Acute Phase Proteins, University College LondonLondon, UK
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Camilloni C, Sala BM, Sormanni P, Porcari R, Corazza A, De Rosa M, Zanini S, Barbiroli A, Esposito G, Bolognesi M, Bellotti V, Vendruscolo M, Ricagno S. Rational design of mutations that change the aggregation rate of a protein while maintaining its native structure and stability. Sci Rep 2016; 6:25559. [PMID: 27150430 PMCID: PMC4858664 DOI: 10.1038/srep25559] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/20/2016] [Indexed: 01/27/2023] Open
Abstract
A wide range of human diseases is associated with mutations that, destabilizing proteins native state, promote their aggregation. However, the mechanisms leading from folded to aggregated states are still incompletely understood. To investigate these mechanisms, we used a combination of NMR spectroscopy and molecular dynamics simulations to compare the native state dynamics of Beta-2 microglobulin (β2m), whose aggregation is associated with dialysis-related amyloidosis, and its aggregation-resistant mutant W60G. Our results indicate that W60G low aggregation propensity can be explained, beyond its higher stability, by an increased average protection of the aggregation-prone residues at its surface. To validate these findings, we designed β2m variants that alter the aggregation-prone exposed surface of wild-type and W60G β2m modifying their aggregation propensity. These results allowed us to pinpoint the role of dynamics in β2m aggregation and to provide a new strategy to tune protein aggregation by modulating the exposure of aggregation-prone residues.
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Affiliation(s)
- Carlo Camilloni
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK.,Department of Chemistry and Institute for Advanced Study, Technische Universität München, Lichtenbergstraße 4, D-85748 Garching, Germany
| | - Benedetta Maria Sala
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milano, Italy
| | - Pietro Sormanni
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London NW3 2PF, UK
| | - Alessandra Corazza
- Dipartimento di Scienze Mediche e Biologiche, Università di Udine, 33100 Udine, Italy
| | - Matteo De Rosa
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milano, Italy
| | - Stefano Zanini
- Dipartimento di Scienze Mediche e Biologiche, Università di Udine, 33100 Udine, Italy
| | - Alberto Barbiroli
- Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente, Università degli Studi di Milano, 20133 Milano, Italy
| | - Gennaro Esposito
- Dipartimento di Scienze Mediche e Biologiche, Università di Udine, 33100 Udine, Italy.,Science and Math Division, New York University Abu Dhabi, Saadiyat Island, Abu Dhabi, UAE
| | - Martino Bolognesi
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milano, Italy.,CIMAINA and CNR Istituto di Biofisica, c/o Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milano, Italy
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, University College London, London NW3 2PF, UK
| | | | - Stefano Ricagno
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milano, Italy
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45
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Leri M, Bemporad F, Oropesa-Nuñez R, Canale C, Calamai M, Nosi D, Ramazzotti M, Giorgetti S, Pavone FS, Bellotti V, Stefani M, Bucciantini M. Molecular insights into cell toxicity of a novel familial amyloidogenic variant of β2-microglobulin. J Cell Mol Med 2016; 20:1443-56. [PMID: 26990223 PMCID: PMC4956941 DOI: 10.1111/jcmm.12833] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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: 11/02/2015] [Accepted: 02/10/2016] [Indexed: 12/20/2022] Open
Abstract
The first genetic variant of β2‐microglobulin (b2M) associated with a familial form of systemic amyloidosis has been recently described. The mutated protein, carrying a substitution of Asp at position 76 with an Asn (D76N b2M), exhibits a strongly enhanced amyloidogenic tendency to aggregate with respect to the wild‐type protein. In this study, we characterized the D76N b2M aggregation path and performed an unprecedented analysis of the biochemical mechanisms underlying aggregate cytotoxicity. We showed that, contrarily to what expected from other amyloid studies, early aggregates of the mutant are not the most toxic species, despite their higher surface hydrophobicity. By modulating ganglioside GM1 content in cell membrane or synthetic lipid bilayers, we confirmed the pivotal role of this lipid as aggregate recruiter favouring their cytotoxicity. We finally observed that the aggregates bind to the cell membrane inducing an alteration of its elasticity (with possible functional unbalance and cytotoxicity) in GM1‐enriched domains only, thus establishing a link between aggregate‐membrane contact and cell damage.
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Affiliation(s)
- Manuela Leri
- Dipartimento di Scienze Biomediche, Sperimentali e Cliniche 'Mario Serio', Università degli Studi di Firenze, Firenze, Italy
| | - Francesco Bemporad
- Dipartimento di Scienze Biomediche, Sperimentali e Cliniche 'Mario Serio', Università degli Studi di Firenze, Firenze, Italy
| | | | - Claudio Canale
- Dipartimento di Nanofisica, Istituto Italiano di Tecnologia, Genova, Italy
| | - Martino Calamai
- European Laboratory for Non-linear Spectroscopy (LENS), Università degli Studi di Firenze, Sesto Fiorentino, Italy.,National Institute of Optics, Consiglio Nazionale delle Ricerche (CNR), Firenze, Italy
| | - Daniele Nosi
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi di Firenze, Firenze, Italy
| | - Matteo Ramazzotti
- Dipartimento di Scienze Biomediche, Sperimentali e Cliniche 'Mario Serio', Università degli Studi di Firenze, Firenze, Italy
| | - Sofia Giorgetti
- Dipartimento di Medicina Molecolare, Istituto di Biochimica, Università degli Studi di Pavia, Pavia, Italy
| | - Francesco S Pavone
- European Laboratory for Non-linear Spectroscopy (LENS), Università degli Studi di Firenze, Sesto Fiorentino, Italy
| | - Vittorio Bellotti
- Dipartimento di Medicina Molecolare, Istituto di Biochimica, Università degli Studi di Pavia, Pavia, Italy.,Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus University College London, London, UK
| | - Massimo Stefani
- Dipartimento di Scienze Biomediche, Sperimentali e Cliniche 'Mario Serio', Università degli Studi di Firenze, Firenze, Italy.,Centro Interuniversitario per lo Studio delle Malattie Neurodegenerative (CIMN), Firenze, Italy
| | - Monica Bucciantini
- Dipartimento di Scienze Biomediche, Sperimentali e Cliniche 'Mario Serio', Università degli Studi di Firenze, Firenze, Italy.,Centro Interuniversitario per lo Studio delle Malattie Neurodegenerative (CIMN), Firenze, Italy
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46
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Natalello A, Mangione PP, Giorgetti S, Porcari R, Marchese L, Zorzoli I, Relini A, Ami D, Faravelli G, Valli M, Stoppini M, Doglia SM, Bellotti V, Raimondi S. Co-fibrillogenesis of Wild-type and D76N β2-Microglobulin: THE CRUCIAL ROLE OF FIBRILLAR SEEDS. J Biol Chem 2016; 291:9678-89. [PMID: 26921323 PMCID: PMC4850305 DOI: 10.1074/jbc.m116.720573] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 02/10/2016] [Indexed: 11/28/2022] Open
Abstract
The amyloidogenic variant of β2-microglobulin, D76N, can readily convert into genuine fibrils under physiological conditions and primes in vitro the fibrillogenesis of the wild-type β2-microglobulin. By Fourier transformed infrared spectroscopy, we have demonstrated that the amyloid transformation of wild-type β2-microglobulin can be induced by the variant only after its complete fibrillar conversion. Our current findings are consistent with preliminary data in which we have shown a seeding effect of fibrils formed from D76N or the natural truncated form of β2-microglobulin lacking the first six N-terminal residues. Interestingly, the hybrid wild-type/variant fibrillar material acquired a thermodynamic stability similar to that of homogenous D76N β2-microglobulin fibrils and significantly higher than the wild-type homogeneous fibrils prepared at neutral pH in the presence of 20% trifluoroethanol. These results suggest that the surface of D76N β2-microglobulin fibrils can favor the transition of the wild-type protein into an amyloid conformation leading to a rapid integration into fibrils. The chaperone crystallin, which is a mild modulator of the lag phase of the variant fibrillogenesis, potently inhibits fibril elongation of the wild-type even once it is absorbed on D76N β2-microglobulin fibrils.
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Affiliation(s)
- Antonino Natalello
- From the Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy, the Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM), UdR Milano-Bicocca, 20126 Milan, Italy
| | - P Patrizia Mangione
- the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom, the Departments of Molecular Medicine, Institute of Biochemistry, and
| | - Sofia Giorgetti
- the Departments of Molecular Medicine, Institute of Biochemistry, and
| | - Riccardo Porcari
- the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom
| | - Loredana Marchese
- the Departments of Molecular Medicine, Institute of Biochemistry, and
| | - Irene Zorzoli
- the Internal Medicine and Therapeutics, University of Pavia, 27100 Pavia, Italy, and
| | - Annalisa Relini
- the Department of Physics, University of Genoa, 16146 Genoa, Italy
| | - Diletta Ami
- From the Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy, the Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM), UdR Milano-Bicocca, 20126 Milan, Italy
| | - Giulia Faravelli
- the Departments of Molecular Medicine, Institute of Biochemistry, and
| | - Maurizia Valli
- the Departments of Molecular Medicine, Institute of Biochemistry, and
| | - Monica Stoppini
- the Departments of Molecular Medicine, Institute of Biochemistry, and
| | - Silvia M Doglia
- From the Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy, the Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM), UdR Milano-Bicocca, 20126 Milan, Italy
| | - Vittorio Bellotti
- the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom, the Departments of Molecular Medicine, Institute of Biochemistry, and
| | - Sara Raimondi
- the Departments of Molecular Medicine, Institute of Biochemistry, and
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47
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Valleix S, Verona G, Jourde-Chiche N, Nédelec B, Mangione PP, Bridoux F, Mangé A, Dogan A, Goujon JM, Lhomme M, Dauteuille C, Chabert M, Porcari R, Waudby CA, Relini A, Talmud PJ, Kovrov O, Olivecrona G, Stoppini M, Christodoulou J, Hawkins PN, Grateau G, Delpech M, Kontush A, Gillmore JD, Kalopissis AD, Bellotti V. D25V apolipoprotein C-III variant causes dominant hereditary systemic amyloidosis and confers cardiovascular protective lipoprotein profile. Nat Commun 2016; 7:10353. [PMID: 26790392 PMCID: PMC4735822 DOI: 10.1038/ncomms10353] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 12/02/2015] [Indexed: 12/24/2022] Open
Abstract
Apolipoprotein C-III deficiency provides cardiovascular protection, but apolipoprotein C-III is not known to be associated with human amyloidosis. Here we report a form of amyloidosis characterized by renal insufficiency caused by a new apolipoprotein C-III variant, D25V. Despite their uremic state, the D25V-carriers exhibit low triglyceride (TG) and apolipoprotein C-III levels, and low very-low-density lipoprotein (VLDL)/high high-density lipoprotein (HDL) profile. Amyloid fibrils comprise the D25V-variant only, showing that wild-type apolipoprotein C-III does not contribute to amyloid deposition in vivo. The mutation profoundly impacts helical structure stability of D25V-variant, which is remarkably fibrillogenic under physiological conditions in vitro producing typical amyloid fibrils in its lipid-free form. D25V apolipoprotein C-III is a new human amyloidogenic protein and the first conferring cardioprotection even in the unfavourable context of renal failure, extending the evidence for an important cardiovascular protective role of apolipoprotein C-III deficiency. Thus, fibrate therapy, which reduces hepatic APOC3 transcription, may delay amyloid deposition in affected patients.
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Affiliation(s)
- Sophie Valleix
- Université Paris-Descartes, Sorbonne Paris Cité, Assistance Publique-Hôpitaux de Paris, Laboratoire de Biologie et Génétique Moléculaire, Hôpital Cochin, Paris 75014, France.,INSERM, UMR_1163, Institut Imagine, Laboratoire de Génétique Ophtalmologique (LGO), Université Paris Descartes, Sorbonne Paris Cité, Paris 75015, France.,INSERM, U1016, Institut Cochin, Université Paris Descartes, Sorbonne Paris Cité, Paris 75014, France.,Sorbonne Universités, UPMC Univ Paris 06, INSERM, Université Paris-Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, Paris 75006, France
| | - Guglielmo Verona
- Centre for Amyloidosis and Acute Phase Proteins, National Amyloidosis Centre, University College London, London NW3 2PF, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia 27100, Italy
| | - Noémie Jourde-Chiche
- Université de Marseille, AP-HM, Hôpital de la Conception, Marseille 13005, France
| | - Brigitte Nédelec
- INSERM, UMR_1163, Institut Imagine, Laboratoire de Génétique Ophtalmologique (LGO), Université Paris Descartes, Sorbonne Paris Cité, Paris 75015, France.,INSERM, U1016, Institut Cochin, Université Paris Descartes, Sorbonne Paris Cité, Paris 75014, France.,Sorbonne Universités, UPMC Univ Paris 06, INSERM, Université Paris-Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, Paris 75006, France
| | - P Patrizia Mangione
- Centre for Amyloidosis and Acute Phase Proteins, National Amyloidosis Centre, University College London, London NW3 2PF, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia 27100, Italy
| | - Frank Bridoux
- Université de Poitiers, CHU Poitiers, Department of Nephrology and Kidney Transplantation, Centre National de Référence Amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, Poitiers 86021, France
| | - Alain Mangé
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Montpellier 34298, France.,INSERM, U1194, Montpellier 34298, France.,Université de Montpellier, Montpellier 34090, France.,Institut régional du Cancer de Montpellier, Montpellier 34298, France
| | - Ahmet Dogan
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55901, USA.,Departments of Laboratory Medicine and Pathology, Memorial Sloan-Kettering Cancer Centre, New York, NY 10065, USA
| | - Jean-Michel Goujon
- Université de Poitiers, CHU Poitiers, Service d'Anatomie et Cytologie Pathologiques, Centre National de Référence Amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, Poitiers 86021, France
| | - Marie Lhomme
- Lipidomic core, ICANalytics, Institute of Cardiometabolism and Nutrition, ICAN, Pitié-Salpôtrière Hospital, F-75013 Paris, France
| | - Carolane Dauteuille
- Sorbonne Universités, UPMC Univ Paris 06, Institute of Cardiometabolism and Nutrition (ICAN), UMR_S 1166, Hôpital de la Pitié, Paris 75013, France
| | - Michèle Chabert
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Université Paris-Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, Paris 75006, France.,Sorbonne Universités, UPMC Univ Paris 06, Institute of Cardiometabolism and Nutrition (ICAN), UMR_S 1166, Hôpital de la Pitié, Paris 75013, France.,Ecole Pratique des Hautes Etudes, PSL Research University, Laboratoire de Pharmacologie cellulaire et Moléculaire, Paris 75006, France
| | - Riccardo Porcari
- Centre for Amyloidosis and Acute Phase Proteins, National Amyloidosis Centre, University College London, London NW3 2PF, UK
| | - Christopher A Waudby
- Institute of Structural and Molecular Biology, University College London and Birkbeck College, University of London, London WC1E 6BT, UK
| | - Annalisa Relini
- Department of Physics, University of Genoa, Via Dodecaneso 33, Genoa 16146, Italy
| | - Philippa J Talmud
- Centre for Cardiovascular Genetics, Institute of Cardiovascular Science, University College London, London WC1E 6JF, UK
| | - Oleg Kovrov
- Department of Medical Biosciences, Umeå University, Umeå SE-901 87, Sweden
| | - Gunilla Olivecrona
- Department of Medical Biosciences, Umeå University, Umeå SE-901 87, Sweden
| | - Monica Stoppini
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia 27100, Italy
| | - John Christodoulou
- Institute of Structural and Molecular Biology, University College London and Birkbeck College, University of London, London WC1E 6BT, UK
| | - Philip N Hawkins
- Centre for Amyloidosis and Acute Phase Proteins, National Amyloidosis Centre, University College London, London NW3 2PF, UK
| | - Gilles Grateau
- Hôpital Tenon, AP-HP, Service de Médecine Interne, Centre de référence des amyloses d'origine inflammatoire et de la fièvre méditerranéenne familiale, Paris 75020, France
| | - Marc Delpech
- Université Paris-Descartes, Sorbonne Paris Cité, Assistance Publique-Hôpitaux de Paris, Laboratoire de Biologie et Génétique Moléculaire, Hôpital Cochin, Paris 75014, France
| | - Anatol Kontush
- Sorbonne Universités, UPMC Univ Paris 06, Institute of Cardiometabolism and Nutrition (ICAN), UMR_S 1166, Hôpital de la Pitié, Paris 75013, France
| | - Julian D Gillmore
- Centre for Amyloidosis and Acute Phase Proteins, National Amyloidosis Centre, University College London, London NW3 2PF, UK
| | - Athina D Kalopissis
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Université Paris-Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, Paris 75006, France
| | - Vittorio Bellotti
- Centre for Amyloidosis and Acute Phase Proteins, National Amyloidosis Centre, University College London, London NW3 2PF, UK.,Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, Pavia 27100, Italy
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48
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Leri M, Nosi D, Natalello A, Porcari R, Ramazzotti M, Chiti F, Bellotti V, Doglia SM, Stefani M, Bucciantini M. The polyphenol Oleuropein aglycone hinders the growth of toxic transthyretin amyloid assemblies. J Nutr Biochem 2016; 30:153-66. [PMID: 27012632 DOI: 10.1016/j.jnutbio.2015.12.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/04/2015] [Accepted: 12/08/2015] [Indexed: 10/22/2022]
Abstract
Transthyretin (TTR) is involved in a subset of familial or sporadic amyloid diseases including senile systemic amyloidosis (SSA), familial amyloid polyneuropathy and cardiomyopathy (FAP/FAC) for which no effective therapy has been found yet. These conditions are characterized by extracellular deposits primarily found in the heart parenchyma and in peripheral nerves whose main component are amyloid fibrils, presently considered the main culprits of cell sufferance. The latter are polymeric assemblies grown from misfolded TTR, either wt or carrying one out of many identified mutations. The recent introduction in the clinical practice of synthetic TTR-stabilizing molecules that reduce protein aggregation provides the rationale to search natural effective molecules able to interfere with TTR amyloid aggregation by hindering the appearance of toxic species or by favoring the growth of harmless aggregates. Here we carried out an in depth biophysical and morphological study on the molecular features of the aggregation of wt- and L55P-TTR involved in SSA or FAP/FAC, respectively, and on the interference with fibril aggregation, stability and toxicity to cardiac HL-1 cells to demonstrate the ability of Oleuropein aglycone (OleA), the main phenolic component of the extra virgin olive oil. We describe the molecular basis of such interference and the resulting reduction of TTR amyloid aggregate cytotoxicity. Our data offer the possibility to validate and optimize the use of OleA or its molecular scaffold to rationally design promising drugs against TTR-related pathologies that could enter a clinical experimental phase.
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Affiliation(s)
- Manuela Leri
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche "Mario Serio"- Università degli Studi di Firenze, Viale Morgagni 50, 50134, Firenze, Italy.
| | - Daniele Nosi
- Dipartimento di Medicina Sperimentale e Clinica - Università degli Studi di Firenze, Largo Brambilla 3, 50134, Firenze, Italy.
| | - Antonino Natalello
- Dipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Riccardo Porcari
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus University College London, NW3 2PF, London, UK.
| | - Matteo Ramazzotti
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche "Mario Serio"- Università degli Studi di Firenze, Viale Morgagni 50, 50134, Firenze, Italy.
| | - Fabrizio Chiti
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche "Mario Serio"- Università degli Studi di Firenze, Viale Morgagni 50, 50134, Firenze, Italy; Centro Interuniversitario per lo Studio delle Malattie Neurodegenerative (CIMN), 50134, Firenze, Italy.
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus University College London, NW3 2PF, London, UK; Dipartimento di Medicina Molecolare, Istituto di Biochimica, Università degli Studi di Pavia, 27100, Pavia, Italy.
| | - Silvia Maria Doglia
- Dipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy; Dipartimento di Fisica G. Occhialini, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126, Milano, Italy.
| | - Massimo Stefani
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche "Mario Serio"- Università degli Studi di Firenze, Viale Morgagni 50, 50134, Firenze, Italy; Dipartimento di Medicina Molecolare, Istituto di Biochimica, Università degli Studi di Pavia, 27100, Pavia, Italy.
| | - Monica Bucciantini
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche "Mario Serio"- Università degli Studi di Firenze, Viale Morgagni 50, 50134, Firenze, Italy; Dipartimento di Medicina Molecolare, Istituto di Biochimica, Università degli Studi di Pavia, 27100, Pavia, Italy.
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49
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Mazza G, Simons JP, Al-Shawi R, Ellmerich S, Urbani L, Giorgetti S, Taylor GW, Gilbertson JA, Hall AR, Al-Akkad W, Dhar D, Hawkins PN, De Coppi P, Pinzani M, Bellotti V, Mangione PP. Amyloid persistence in decellularized liver: biochemical and histopathological characterization. Amyloid 2016; 23:1-7. [PMID: 26646718 PMCID: PMC4819572 DOI: 10.3109/13506129.2015.1110518] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Systemic amyloidoses are a group of debilitating and often fatal diseases in which fibrillar protein aggregates are deposited in the extracellular spaces of a range of tissues. The molecular basis of amyloid formation and tissue localization is still unclear. Although it is likely that the extracellular matrix (ECM) plays an important role in amyloid deposition, this interaction is largely unexplored, mostly because current analytical approaches may alter the delicate and complicated three-dimensional architecture of both ECM and amyloid. We describe here a decellularization procedure for the amyloidotic mouse liver which allows high-resolution visualization of the interactions between amyloid and the constitutive fibers of the extracellular matrix. The primary structure of the fibrillar proteins remains intact and the amyloid fibrils retain their amyloid enhancing factor activity.
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Affiliation(s)
| | - J Paul Simons
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , and
| | - Raya Al-Shawi
- c Centre for Biomedical Science, Division of Medicine, University College London , London , UK
| | - Stephan Ellmerich
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , and
| | - Luca Urbani
- d Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme, UCL Institute for Child Health, Great Ormond Street Hospital, University College London , London UK
| | - Sofia Giorgetti
- e Department of Molecular Medicine , Institute of Biochemistry, University of Pavia , Pavia , Italy , and
| | - Graham W Taylor
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , and
| | - Janet A Gilbertson
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , and
| | | | | | - Dipok Dhar
- a Institute for Liver and Digestive Health .,f Organ Transplantation Centre and Comparative Medicine Department, King Faisal Specialist Hospital , Riyadh , Saudi Arabia
| | - Philip N Hawkins
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , and
| | - Paolo De Coppi
- d Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Programme, UCL Institute for Child Health, Great Ormond Street Hospital, University College London , London UK
| | | | - Vittorio Bellotti
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , and.,e Department of Molecular Medicine , Institute of Biochemistry, University of Pavia , Pavia , Italy , and
| | - P Patrizia Mangione
- b Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins , and.,e Department of Molecular Medicine , Institute of Biochemistry, University of Pavia , Pavia , Italy , and
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50
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Mangione PP, Deroo S, Ellmerich S, Bellotti V, Kolstoe S, Wood SP, Robinson CV, Smith MD, Tennent GA, Broadbridge RJ, Council CE, Thurston JR, Steadman VA, Vong AK, Swain CJ, Pepys MB, Taylor GW. Bifunctional crosslinking ligands for transthyretin. Open Biol 2015; 5:150105. [PMID: 26400472 PMCID: PMC4593668 DOI: 10.1098/rsob.150105] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Wild-type and variant forms of transthyretin (TTR), a normal plasma protein, are amyloidogenic and can be deposited in the tissues as amyloid fibrils causing acquired and hereditary systemic TTR amyloidosis, a debilitating and usually fatal disease. Reduction in the abundance of amyloid fibril precursor proteins arrests amyloid deposition and halts disease progression in all forms of amyloidosis including TTR type. Our previous demonstration that circulating serum amyloid P component (SAP) is efficiently depleted by administration of a specific small molecule ligand compound, that non-covalently crosslinks pairs of SAP molecules, suggested that TTR may be also amenable to this approach. We first confirmed that chemically crosslinked human TTR is rapidly cleared from the circulation in mice. In order to crosslink pairs of TTR molecules, promote their accelerated clearance and thus therapeutically deplete plasma TTR, we prepared a range of bivalent specific ligands for the thyroxine binding sites of TTR. Non-covalently bound human TTR-ligand complexes were formed that were stable in vitro and in vivo, but they were not cleared from the plasma of mice in vivo more rapidly than native uncomplexed TTR. Therapeutic depletion of circulating TTR will require additional mechanisms.
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Affiliation(s)
- P Patrizia Mangione
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Stéphanie Deroo
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Stephan Ellmerich
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - Vittorio Bellotti
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia, Italy
| | - Simon Kolstoe
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - Stephen P Wood
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - Carol V Robinson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Martin D Smith
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Glenys A Tennent
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - Robert J Broadbridge
- Peptide Protein Research Ltd, Claylands Road, Bishops Waltham, Southampton, Hampshire SO32 1QD, UK
| | - Claire E Council
- Peptide Protein Research Ltd, Claylands Road, Bishops Waltham, Southampton, Hampshire SO32 1QD, UK
| | - Joanne R Thurston
- Peptide Protein Research Ltd, Claylands Road, Bishops Waltham, Southampton, Hampshire SO32 1QD, UK
| | | | | | - Christopher J Swain
- Cambridge MedChem Consulting, 8 Mangers Lane, Duxford, Cambridge CB22 4RN, UK
| | - Mark B Pepys
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
| | - Graham W Taylor
- Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PF, UK
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