1
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Uttarkar A, Rao V, Bhat D, Niranjan V. Disaggregation of amyloid-beta fibrils via natural metabolites using long timescale replica exchange molecular dynamics simulation studies. J Mol Model 2024; 30:61. [PMID: 38321243 DOI: 10.1007/s00894-024-05860-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 01/30/2024] [Indexed: 02/08/2024]
Abstract
CONTEXT Amyloid fibrils are self-assembled fibrous protein aggregates that are associated with several presently incurable diseases such as Alzheimer's. disease that is characterized by the accumulation of amyloid fibrils in the brain, which leads to the formation of plaques and the death of brain cells. Disaggregation of amyloid fibrils is considered a promising approach to cure Alzheimer's disease. The mechanism of amyloid fibril formation is complex and not fully understood, making it difficult to develop drugs that can target the process. Diacetonamine and cystathionine are potential lead compounds to induce disaggregation of amyloid fibrils. METHODS In the current research, we have used long timescale molecular simulation studies and replica exchange molecular dynamics (REMD) for 1000 ns (1 μs) to examine the mechanisms by which natural metabolites can disaggregate amyloid-beta fibrils. Molecular docking was carried out using Glide and with prior protein minimization and ligand preparation. We focused on a screening a database of natural metabolites, as potential candidates for disaggregating amyloid fibrils. We used Desmond with OPLS 3e as a force field. MM-GBSA calculations were performed. Blood-brain barrier permeability, SASA, and radius of gyration parameters were calculated.
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Affiliation(s)
- Akshay Uttarkar
- Department of Biotechnology, R V College of Engineering, Mysuru Road, Kengeri, Bangalore, 560059, affiliated to Visvesvaraya Technological University, Belagavi, 590018, India
| | - Vibha Rao
- Department of Biotechnology, R V College of Engineering, Mysuru Road, Kengeri, Bangalore, 560059, affiliated to Visvesvaraya Technological University, Belagavi, 590018, India
| | - Dhrithi Bhat
- Department of Biotechnology, R V College of Engineering, Mysuru Road, Kengeri, Bangalore, 560059, affiliated to Visvesvaraya Technological University, Belagavi, 590018, India
| | - Vidya Niranjan
- Department of Biotechnology, R V College of Engineering, Mysuru Road, Kengeri, Bangalore, 560059, affiliated to Visvesvaraya Technological University, Belagavi, 590018, India.
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2
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Prokaeva T, Joshi T, Klimtchuk ES, Gibson VM, Spencer B, Siddiqi O, Nedelkov D, Hu Y, Berk JL, Cuddy SAM, Dasari S, Chiu A, Choate LA, McPhail ED, Cui H, Chen H, Burks EJ, Sanchorawala V, Connors LH. A novel substitution of proline (P32L) destabilises β2-microglobulin inducing hereditary systemic amyloidosis. Amyloid 2022; 29:255-262. [PMID: 35575118 DOI: 10.1080/13506129.2022.2072199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND β2-microglobulin amyloidosis was first described in the 1980s as a protein deposition disease associated with long-term haemodialysis. More recently, two inherited forms resulting from separate point mutations in the β2-microglobulin gene have been identified. In this report, we detail a novel β2M variant, P32L, caused by a unique dinucleotide mutation that is linked to systemic hereditary β2-microglobulin amyloidosis. METHODS Three family members from a Portuguese kinship featured cardiomyopathy, requiring organ transplantation in one case, along with soft tissue involvement; other involvements included gastrointestinal, neuropathic and sicca syndrome. In vitro studies with recombinant P32L, P32G, D76N and wild-type β2-microglobulin were undertaken to compare the biophysical properties of the proteins. RESULTS The P32L variant was caused by the unique heterozygous dinucleotide mutation c.154_155delinsTT. Amyloid disease featured lowered serum β2-microglobulin levels with near equal amounts of circulating P32L and wild-type proteins; amyloid deposits were composed exclusively of P32L variant protein. In vitro studies of P32L demonstrated thermodynamic and chemical instability and enhanced susceptibility to proteolysis with rapid formation of pre-fibrillar oligomeric structures by N- and C-terminally truncated species under physiological conditions. CONCLUSIONS This work provides both clinical and experimental evidence supporting the critical role of P32 residue replacement in β2M amyloid fibrillogenesis.
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Affiliation(s)
- Tatiana Prokaeva
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA
| | - Tracy Joshi
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA
| | - Elena S Klimtchuk
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA
| | - Victoria M Gibson
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA
| | - Brian Spencer
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA
| | - Omar Siddiqi
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA
| | | | | | - John L Berk
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA
| | - Sarah A M Cuddy
- Amyloidosis Program, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Surendra Dasari
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - April Chiu
- Department of Laboratory of Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Lauren A Choate
- Department of Laboratory of Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Ellen D McPhail
- Department of Laboratory of Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Haili Cui
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA.,Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Hui Chen
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Eric J Burks
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
| | | | - Lawreen H Connors
- Amyloidosis Center, Boston University School of Medicine, Boston, MA, USA.,Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA
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3
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Hsieh IC, Chen TW, Chuang YP, Lai YJ, Tu LH. Tyrosine 12 of human calcitonin modulates its amyloid formation, membrane binding, and bioactivity. Biochimie 2022; 197:121-129. [PMID: 35240220 DOI: 10.1016/j.biochi.2022.02.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/22/2022] [Accepted: 02/21/2022] [Indexed: 12/24/2022]
Abstract
Irreversible aggregation greatly limits the bioavailability and therapeutic activity of peptide-based drugs, so preventing protein or peptide aggregation is a common issue in drug formulation. Human calcitonin (hCT), a peptide hormone secreted by thyroidal parafollicular cells, can regulate blood calcium levels and maintain bone structure. Hence, it can be used as a treatment for metabolic bone diseases, such as osteoporosis and Paget's disease. However, hCT has a relatively high propensity to form amyloid fibrils that hinder its biological function and limit its pharmaceutical potential. In previous studies, we demonstrated, along with other research groups, that modifying specific residues of hCT is sufficient to prevent hCT aggregation. We proceeded to find the key residues that regulate the aggregation of hCT for a better understanding of the mechanism of hCT aggregation. In this work, we used amyloid propensity prediction software and found that Tyr12 may play a key role in regulating hCT aggregation. Thus, we propose three human calcitonin variants (Y12E, Y12P, Y12R) for hCT non-amyloidogenic substituents and examined the aggregation characteristics of variants using multiple biophysical techniques. Y12E showed the best anti-aggregation propensity and can work as inhibitor of hCT aggregation. We also found this residue is crucial for membrane binding and receptor binding. The data presented herein provides an overview of Tyr12 that should be carefully considered in peptide design.
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Affiliation(s)
- I-Ching Hsieh
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan
| | - Ting-Wei Chen
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Ya-Ping Chuang
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan
| | - Yun-Ju Lai
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Ling-Hsien Tu
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan.
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4
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Chiera NM, Bolisetty S, Eichler R, Mezzenga R, Steinegger P. Removal of radioactive cesium from contaminated water by whey protein amyloids-carbon hybrid filters. RSC Adv 2021; 11:32454-32458. [PMID: 35495498 PMCID: PMC9041901 DOI: 10.1039/d1ra05376k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/14/2021] [Indexed: 12/17/2022] Open
Abstract
We report on the application of an innovative whey protein amyloids–carbon hybrid filter for the removal and disposal of the long-lived radioactive fission product 137Cs from aqueous samples. Test experiments revealed a reduction of 137Cs radioactivity by a factor of 340 compared to the initial solution, with an efficiency as high as 99.7%. The adsorption capacity of the membrane was explored by performing several cycles of filtration, indicating a potential retention of more than 115 MBq per gram of filtering material at the applied experimental conditions. These results pave the way for further investigations on the applicability of this filter material to other nuclear fission products. The efficient removal of the long-lived fission product 137Cs from radioactive water by a filter material based on whey protein fibrils and activated carbon.![]()
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Affiliation(s)
- Nadine M Chiera
- Laboratory of Radiochemistry, Paul Scherrer Institute Villigen PSI 5232 Switzerland
| | - Sreenath Bolisetty
- BluAct Technologies GmbH Glattpark 8152 Switzerland.,Department of Health Sciences and Technology, ETH Zürich Zürich 8092 Switzerland
| | - Robert Eichler
- Laboratory of Radiochemistry, Paul Scherrer Institute Villigen PSI 5232 Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology, ETH Zürich Zürich 8092 Switzerland .,Department of Chemistry and Applied Biosciences, ETH Zürich Zürich 8092 Switzerland
| | - Patrick Steinegger
- Laboratory of Radiochemistry, Paul Scherrer Institute Villigen PSI 5232 Switzerland .,Department of Materials, ETH Zürich Zürich 8092 Switzerland
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5
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Babych M, Nguyen PT, Côté-Cyr M, Kihal N, Quittot N, Golizeh M, Sleno L, Bourgault S. Site-Specific Alkylation of the Islet Amyloid Polypeptide Accelerates Self-Assembly and Potentiates Perturbation of Lipid Membranes. Biochemistry 2021; 60:2285-2299. [PMID: 34264642 DOI: 10.1021/acs.biochem.1c00308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The accumulation of insoluble amyloids in the pancreatic islets is a pathological hallmark of type II diabetes and correlates closely with the loss of β-cell mass. The predominant component of these amyloid deposits is the islet amyloid polypeptide (IAPP). The factors contributing to the conversion of IAPP from a monomeric bioactive peptide hormone into insoluble amyloid fibrils remain partially elusive. In this study, we investigated the effect of the oxidative non-enzymatic post-translational modification induced by the reactive metabolite 4-hydroxynonenal (HNE) on IAPP aggregation and cytotoxicity. Incubation of IAPP with exogenous HNE accelerated its self-assembly into β-sheet fibrils and led to the formation of a Michael adduct on the His-18 side chain. To model this covalent modification, the imidazole N(π) position of histidine was alkylated using a close analogue of HNE, the octyl chain. IAPP lipidated at His-18 showed a hastened random coil-to-β-sheet conformational conversion into fibrillar assemblies with a distinct morphology, a low level of binding to thioflavin T, and a high surface hydrophobicity. Introducing an octyl chain on His-18 enhanced the ability of the peptide to perturb synthetic lipid vesicles, to permeabilize the plasma membrane, and to induce the death of pancreatic β-cells. Alkylated IAPP triggered the self-assembly of unmodified IAPP by prompting primary nucleation and increased its capacity to perturb the plasma membrane, indicating that only a small proportion of the modified peptide is necessary to shift the balance toward the formation of proteotoxic species. This study underlines the importance of studying IAPP post-translational modifications induced by oxidative metabolites in the context of pancreatic amyloids.
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Affiliation(s)
- Margaryta Babych
- Department of Chemistry, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, http://proteo.ca/en/
| | - Phuong Trang Nguyen
- Department of Chemistry, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, http://proteo.ca/en/
| | - Mélanie Côté-Cyr
- Department of Chemistry, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, http://proteo.ca/en/
| | - Nadjib Kihal
- Department of Chemistry, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, http://proteo.ca/en/
| | - Noé Quittot
- Department of Chemistry, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, http://proteo.ca/en/
| | - Makan Golizeh
- Department of Mathematical and Physical Sciences, Concordia University of Edmonton, Edmonton, AB T5B 4E4, Canada
| | - Lekha Sleno
- Department of Chemistry, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada
| | - Steve Bourgault
- Department of Chemistry, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montreal H3C 3P8, Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, http://proteo.ca/en/
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6
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Willbold D, Strodel B, Schröder GF, Hoyer W, Heise H. Amyloid-type Protein Aggregation and Prion-like Properties of Amyloids. Chem Rev 2021; 121:8285-8307. [PMID: 34137605 DOI: 10.1021/acs.chemrev.1c00196] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review will focus on the process of amyloid-type protein aggregation. Amyloid fibrils are an important hallmark of protein misfolding diseases and therefore have been investigated for decades. Only recently, however, atomic or near-atomic resolution structures have been elucidated from various in vitro and ex vivo obtained fibrils. In parallel, the process of fibril formation has been studied in vitro under highly artificial but comparatively reproducible conditions. The review starts with a summary of what is known and speculated from artificial in vitro amyloid-type protein aggregation experiments. A partially hypothetic fibril selection model will be described that may be suitable to explain why amyloid fibrils look the way they do, in particular, why at least all so far reported high resolution cryo-electron microscopy obtained fibril structures are in register, parallel, cross-β-sheet fibrils that mostly consist of two protofilaments twisted around each other. An intrinsic feature of the model is the prion-like nature of all amyloid assemblies. Transferring the model from the in vitro point of view to the in vivo situation is not straightforward, highly hypothetic, and leaves many open questions that need to be addressed in the future.
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Affiliation(s)
- Dieter Willbold
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany.,Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology (State University), 141700 Dolgoprudny, Russia
| | - Birgit Strodel
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Institute of Theoretical and Computational Chemistry, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Gunnar F Schröder
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Physics Department, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Wolfgang Hoyer
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Henrike Heise
- Institute of Biological Information Processing, Structural Biochemistry, IBI-7, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.,Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
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7
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Kamiya S, Shimizu K, Okada A, Inoshima Y. Induction of Serum Amyloid A3 in Mouse Mammary Epithelial Cells Stimulated with Lipopolysaccharide and Lipoteichoic Acid. Animals (Basel) 2021; 11:ani11061548. [PMID: 34070499 PMCID: PMC8230092 DOI: 10.3390/ani11061548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/15/2021] [Accepted: 05/23/2021] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Serum amyloid A (SAA) is an acute phase protein present in mammals and birds. Based on the amino acid sequence, SAA has been classified into isoforms SAA1–4 in mice. Previously, it was reported that after the stimulation with bacterial antigens, the expression of the Saa3 mRNA was induced more strongly than that of the Saa1 mRNA in mouse epithelia, including colonic and alveolar epithelial cells, indicating that SAA3 plays a role in the local response. However, the contribution of SAA3 to the local response in mouse mammary epithelium, where mastitis occurs due to bacterial infection, has not been completely determined yet. In this study, to clarify whether mouse SAA3 has a role in the defense against bacterial infection in mouse mammary epithelium, normal murine mammary gland (NMuMG) epithelial cells were stimulated with lipopolysaccharide (LPS) and lipoteichoic acid (LTA). LPS and LTA significantly enhanced mRNA expression level of the Saa3 gene but not that of Saa1. Furthermore, LPS induced SAA3 protein expression more strongly than LTA. Our data indicate that SAA3 expression in mouse mammary epithelial cells was increased by the stimulation with bacterial antigens, suggesting that SAA3 is involved in the defense against bacterial infection in mouse mammary epithelium. Abstract In this study, to establish whether serum amyloid A (SAA) 3 plays a role in the defense against bacterial infection in mouse mammary epithelium, normal murine mammary gland (NMuMG) epithelial cells were stimulated with lipopolysaccharide (LPS) and lipoteichoic acid (LTA). LPS and LTA significantly enhanced mRNA expression level of the Saa3 gene, whereas no significant change was observed in the Saa1 mRNA level. Furthermore, LPS induced SAA3 protein expression more strongly than LTA, whereas neither LPS nor LTA significantly affected SAA1 protein expression. These data indicate that the expression of SAA3 in mouse mammary epithelial cells was increased by the stimulation with bacterial antigens. SAA3 has been reported to stimulate neutrophils in the intestinal epithelium and increase interleukin-22 expression, which induces activation of the innate immune system and production of antibacterial proteins, such as antimicrobial peptides. Therefore, collectively, these data suggest that SAA3 is involved in the defense against bacterial infection in mouse mammary epithelium.
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Affiliation(s)
- Sato Kamiya
- Laboratory of Food and Environmental Hygiene, Cooperative Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (S.K.); (K.S.); (A.O.)
| | - Kaori Shimizu
- Laboratory of Food and Environmental Hygiene, Cooperative Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (S.K.); (K.S.); (A.O.)
| | - Ayaka Okada
- Laboratory of Food and Environmental Hygiene, Cooperative Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (S.K.); (K.S.); (A.O.)
- Education and Research Center for Food Animal Health, Gifu University (GeFAH), Gifu 501-1193, Japan
| | - Yasuo Inoshima
- Laboratory of Food and Environmental Hygiene, Cooperative Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (S.K.); (K.S.); (A.O.)
- Education and Research Center for Food Animal Health, Gifu University (GeFAH), Gifu 501-1193, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan
- The United Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan
- Correspondence: ; Tel.: +81-58-293-2863
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8
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Kim HY, Lee H, Lee JK, Kim HV, Kim KS, Kim Y. Bicine promotes rapid formation of β-sheet-rich amyloid-β fibrils. PLoS One 2020; 15:e0240608. [PMID: 33048999 PMCID: PMC7553346 DOI: 10.1371/journal.pone.0240608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/29/2020] [Indexed: 12/27/2022] Open
Abstract
Fibrillar aggregates of amyloid-β (Aβ) are the main component of plaques lining the cerebrovasculature in cerebral amyloid angiopathy. As the predominant Aβ isoform in vascular deposits, Aβ40 is a valuable target in cerebral amyloid angiopathy research. However, the slow process of Aβ40 aggregation in vitro is a bottleneck in the search for Aβ-targeting molecules. In this study, we sought a method to accelerate the aggregation of Aβ40in vitro, to improve experimental screening procedures. We evaluated the aggregating ability of bicine, a biological buffer, using various in vitro methods. Our data suggest that bicine promotes the aggregation of Aβ40 with high speed and reproducibility, yielding a mixture of aggregates with significant β-sheet-rich fibril formation and toxicity.
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Affiliation(s)
- Hye Yun Kim
- Department of Pharmacy, Yonsei University, Incheon, Republic of Korea
- Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
| | - HeeYang Lee
- Department of Pharmacy, Yonsei University, Incheon, Republic of Korea
- Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
- Integrated Science and Engineering Division, Yonsei University, Incheon, Republic of Korea
| | - Jong Kook Lee
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Hyunjin Vincent Kim
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Key-Sun Kim
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - YoungSoo Kim
- Department of Pharmacy, Yonsei University, Incheon, Republic of Korea
- Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, Republic of Korea
- Integrated Science and Engineering Division, Yonsei University, Incheon, Republic of Korea
- * E-mail:
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9
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Sasahara K, Yamaguchi K, So M, Goto Y. Polyphosphates diminish solubility of a globular protein and thereby promote amyloid aggregation. J Biol Chem 2019; 294:15318-15329. [PMID: 31439662 DOI: 10.1074/jbc.ra119.008662] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 08/21/2019] [Indexed: 01/08/2023] Open
Abstract
Structural changes of globular proteins and their resultant amyloid aggregation have been associated with various human diseases, such as lysozyme amyloidosis and light-chain amyloidosis. Because many globular proteins can convert into amyloid fibrils in vitro, the mechanisms of amyloid fibril formation have been studied in various experimental systems, but several questions remain unresolved. Here, using several approaches, such as turbidimetry, fluorescence and CD spectroscopy, EM, and isothermal titration calorimetry, we examined the binding of polyphosphates to hen egg-white lysozyme under acidic conditions and observed polyphosphate-induced structural changes of the protein promoting its aggregation. Our data indicate that negatively charged polyphosphates bind to protein molecules with a net positive charge. The polyphosphate-bound, structurally destabilized protein molecules then start assembling into insoluble amorphous aggregates once they pass the solubility limit. We further show that the polyphosphates decrease the solubility limit of the protein and near this limit, the protein molecules are in a labile state and highly prone to converting into amyloid fibrils. Our results explain how polyphosphates affect amorphous aggregation of proteins, how amyloid formation is induced in the presence of polyphosphates, and how polyphosphate chain length is an important factor in amyloid formation.
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Affiliation(s)
- Kenji Sasahara
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Keiichi Yamaguchi
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masatomo So
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuji Goto
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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10
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Iannuzzi C, Borriello M, D'Agostino A, Cimini D, Schiraldi C, Sirangelo I. Protective effect of extractive and biotechnological chondroitin in insulin amyloid and advanced glycation end product-induced toxicity. J Cell Physiol 2019; 234:3814-3828. [PMID: 30256388 DOI: 10.1002/jcp.27153] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/10/2018] [Indexed: 01/12/2023]
Abstract
Glycosaminoglycans are extracellular matrix components related to several biological functions and diseases. Chondroitin sulfate is a sulphated glycosaminoglycan synthesized as part of proteoglycan molecules. They are frequently associated with amyloid deposits and possess an active role in amyloid fibril formation. Recently, a neuroprotective effect of extracellular matrix components against amyloid toxicity and oxidative stress has been reported. Advanced glycation end products (AGEs), the end products of the glycation reaction, have been linked to amyloid-based neurodegenerative disease as associated with oxidative stress and inflammation. In this study we have analyzed the effect of chondroitin sulfate isolated from different species, in comparison with a new biotechnological unsulfated chondroitin, in the amyloid aggregation process of insulin, as well as the ability to prevent the formation of AGEs and related toxicity. The results have showed a determining role of chondroitin sulfate groups in modulating insulin amyloid aggregation. In addition, both sulfated and unsulfated chondroitins have shown protective properties against amyloid and AGEs-induced toxicity. These data are very relevant as a protective effect of these glycosaminoglycans in the AGE-induced toxicity was never observed before. Moreover, considering the issues related to the purity and safety of chondroitin from natural sources, this study suggests a new potential application for the biotechnological chondroitin.
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Affiliation(s)
- Clara Iannuzzi
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Margherita Borriello
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Antonella D'Agostino
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Donatella Cimini
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Chiara Schiraldi
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Ivana Sirangelo
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
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11
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Sebastiao M, Quittot N, Marcotte I, Bourgault S. Glycosaminoglycans Induce Amyloid Self-Assembly of a Peptide Hormone by Concerted Secondary and Quaternary Conformational Transitions. Biochemistry 2019; 58:1214-1225. [PMID: 30720275 DOI: 10.1021/acs.biochem.8b01206] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Amyloids are polypeptide supramolecular assemblies that have been historically associated with numerous pathologies. Nonetheless, recent studies have identified many amyloid structures that accomplish vital physiological functions. Interestingly, amyloid fibrils, either pathological or functional, have been reported to be consistently associated with other biomolecules such as RNA and glycosaminoglycans (GAGs). These linear polyanions, RNA and GAGs, have also demonstrated an inherent ability to accelerate and/or promote amyloid formation. GAGs, including heparan sulfate, are highly charged polysaccharides that may have essential roles in the storage of peptide hormones in the form of amyloids. In this study, we evaluated the ability of sulfated GAGs to promote the self-assembly of the peptide (neuro)hormone PACAP27 and investigated the secondary and quaternary conformational transitions associated with the amyloidogenic process. PACAP27 readily self-assembled into insoluble, α-helix-rich globular particulates in the presence of sulfated GAGs, which gradually condensed and disappeared as nontoxic β-sheet-rich amyloid fibrils were formed. By designing a PACAP27 derivative for which helical folding was hindered, we observed that the α-helix-to-β-sheet conformational transition within the amorphous particulates constitutes the rate-limiting step of primary nucleation events. The proposed mechanism of GAG-induced self-assembly within insoluble particulates appears to be fundamentally different from usual amyloidogenic systems, which commonly implicates the formation of soluble prefibrillar proteospecies. Overall, this study provides new insights into the mechanistic details involved in the formation of functional amyloids catalyzed by polyanions, such as the assembly of nuclear amyloid bodies and the storage of peptide hormones.
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Affiliation(s)
- Mathew Sebastiao
- Department of Chemistry , Université du Québec à Montréal , C.P. 8888, Succursale Centre-Ville , Montreal H3C 3P8 , Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO , Université Laval , Québec G1V 0A6 , Canada
| | - Noe Quittot
- Department of Chemistry , Université du Québec à Montréal , C.P. 8888, Succursale Centre-Ville , Montreal H3C 3P8 , Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO , Université Laval , Québec G1V 0A6 , Canada
| | - Isabelle Marcotte
- Department of Chemistry , Université du Québec à Montréal , C.P. 8888, Succursale Centre-Ville , Montreal H3C 3P8 , Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO , Université Laval , Québec G1V 0A6 , Canada
| | - Steve Bourgault
- Department of Chemistry , Université du Québec à Montréal , C.P. 8888, Succursale Centre-Ville , Montreal H3C 3P8 , Canada.,Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO , Université Laval , Québec G1V 0A6 , Canada
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12
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Giorgetti S, Greco C, Tortora P, Aprile FA. Targeting Amyloid Aggregation: An Overview of Strategies and Mechanisms. Int J Mol Sci 2018; 19:E2677. [PMID: 30205618 PMCID: PMC6164555 DOI: 10.3390/ijms19092677] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/02/2018] [Accepted: 09/05/2018] [Indexed: 12/26/2022] Open
Abstract
Amyloids result from the aggregation of a set of diverse proteins, due to either specific mutations or promoting intra- or extra-cellular conditions. Structurally, they are rich in intermolecular β-sheets and are the causative agents of several diseases, both neurodegenerative and systemic. It is believed that the most toxic species are small aggregates, referred to as oligomers, rather than the final fibrillar assemblies. Their mechanisms of toxicity are mostly mediated by aberrant interactions with the cell membranes, with resulting derangement of membrane-related functions. Much effort is being exerted in the search for natural antiamyloid agents, and/or in the development of synthetic molecules. Actually, it is well documented that the prevention of amyloid aggregation results in several cytoprotective effects. Here, we portray the state of the art in the field. Several natural compounds are effective antiamyloid agents, notably tetracyclines and polyphenols. They are generally non-specific, as documented by their partially overlapping mechanisms and the capability to interfere with the aggregation of several unrelated proteins. Among rationally designed molecules, we mention the prominent examples of β-breakers peptides, whole antibodies and fragments thereof, and the special case of drugs with contrasting transthyretin aggregation. In this framework, we stress the pivotal role of the computational approaches. When combined with biophysical methods, in several cases they have helped clarify in detail the protein/drug modes of interaction, which makes it plausible that more effective drugs will be developed in the future.
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Affiliation(s)
- Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Via Taramelli 3b, 27100 Pavia, Italy.
| | - Claudio Greco
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy.
| | - Paolo Tortora
- Department of Biotechnologies and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy.
- Milan Center for Neuroscience (Neuro-MI), 20126 Milano, Italy.
| | - Francesco Antonio Aprile
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK.
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13
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Yadav KK, Arakha M, Das B, Mallick B, Jha S. Preferential binding to zinc oxide nanoparticle interface inhibits lysozyme fibrillation and cytotoxicity. Int J Biol Macromol 2018; 116:955-965. [PMID: 29778879 DOI: 10.1016/j.ijbiomac.2018.05.098] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 02/08/2023]
Abstract
The aim of present investigation is to explore the effect of zinc oxide nanoparticles (ZnONP, 30 nm) interface on conformational dynamics and stability of lysozyme, at pH 7.4 and pH 9.0. Lysozyme adopts partially disordered conformation at pH 9.0, which adopts fibril morphology in presence of sodium dodecyl sulfate (SDS), compared to the conformation adopted at pH 7.4. However, the presence of ZnONP interface renders partially disordered lysozyme relatively regular and non-amyloidogenic conformation, and enhances the functional efficacy of lysozyme at pH 9.0. Additionally, the thermograms reveal a non-cooperative unfolding of the pH 9.0 lysozyme conformation, which accompanied with intermediate conformations that increased with increase in the interface concentration. The binding thermodynamics indicate that at pH 9.0, lysozyme conformation preferentially binds to ZnONP interface than SDS interface. The preferential binding is attributed for the resulting anti-fibrillation propensity of ZnONP interface. The data, altogether, suggest that the presence of ZnONP interface resulted in conformational rearrangements in the partially disordered lysozyme at pH 9.0 causing accumulation of non-amyloidogenic and functionally active intermediates, thus shielding the lysozyme from SDS induced fibrillation and cytotoxicity.
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Affiliation(s)
- Kanti K Yadav
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, India
| | - Manoranjan Arakha
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | - Basudeb Das
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | - Bibekanand Mallick
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India
| | - Suman Jha
- Department of Life Science, National Institute of Technology, Rourkela, Odisha, India.
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14
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Gatt ME, Kaplan B, Yogev D, Slyusarevsky E, Pogrebijski G, Golderman S, Kukuy O, Livneh A. The use of serum free light chain dimerization patterns assist in the diagnosis of AL amyloidosis. Br J Haematol 2018; 182:86-92. [DOI: 10.1111/bjh.15387] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/07/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Moshe E. Gatt
- Department of Haematology; Hadassah Hebrew University Medical Centre; Jerusalem Israel
| | - Batia Kaplan
- Heller Institute of Medical Research, Sheba Medical Centre; Tel-Hashomer Israel
| | - Dean Yogev
- Department of Haematology; Hadassah Hebrew University Medical Centre; Jerusalem Israel
| | - Elana Slyusarevsky
- Department of Haematology; Hadassah Hebrew University Medical Centre; Jerusalem Israel
| | - Galina Pogrebijski
- Department of Haematology; Hadassah Hebrew University Medical Centre; Jerusalem Israel
| | - Sizilia Golderman
- Heller Institute of Medical Research, Sheba Medical Centre; Tel-Hashomer Israel
| | - Olga Kukuy
- Institute of Nephrology and hypertension, Sheba Medical Centre; Tel-Hashomer Israel
| | - Avi Livneh
- Heller Institute of Medical Research, Sheba Medical Centre; Tel-Hashomer Israel
- Sackler Faculty of Medicine; Tel-Aviv University; Tel-Aviv Israel
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15
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Effect of Phosphatidylserine and Cholesterol on Membrane-mediated Fibril Formation by the N-terminal Amyloidogenic Fragment of Apolipoprotein A-I. Sci Rep 2018; 8:5497. [PMID: 29615818 PMCID: PMC5882889 DOI: 10.1038/s41598-018-23920-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 03/22/2018] [Indexed: 01/31/2023] Open
Abstract
Here, we examined the effects of phosphatidylserine (PS) and cholesterol on the fibril-forming properties of the N-terminal 1‒83 fragment of an amyloidogenic G26R variant of apoA-I bound to small unilamellar vesicles. A thioflavin T fluorescence assay together with microscopic observations showed that PS significantly retards the nucleation step in fibril formation by apoA-I 1‒83/G26R, whereas cholesterol slightly enhances fibril formation. Circular dichroism analyses demonstrated that PS facilitates a structural transition from random coil to α-helix in apoA-I 1‒83/G26R with great stabilization of the α-helical structure upon lipid binding. Isothermal titration calorimetry measurements revealed that PS induces a marked increase in capacity for binding of apoA-I 1‒83/G26R to the membrane surface, perhaps due to electrostatic interactions of positively charged amino acids in apoA-I with PS. Such effects of PS to enhance lipid interactions and inhibit fibril formation of apoA-I were also observed for the amyloidogenic region-containing apoA-I 8‒33/G26R peptide. Fluorescence measurements using environment-sensitive probes indicated that PS induces a more solvent-exposed, membrane-bound conformation in the amyloidogenic region of apoA-I without affecting membrane fluidity. Since cell membranes have highly heterogeneous lipid compositions, our findings may provide a molecular basis for the preferential deposition of apoA-I amyloid fibrils in tissues and organs.
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16
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Wagner AS, Politi AZ, Ast A, Bravo-Rodriguez K, Baum K, Buntru A, Strempel NU, Brusendorf L, Hänig C, Boeddrich A, Plassmann S, Klockmeier K, Ramirez-Anguita JM, Sanchez-Garcia E, Wolf J, Wanker EE. Self-assembly of Mutant Huntingtin Exon-1 Fragments into Large Complex Fibrillar Structures Involves Nucleated Branching. J Mol Biol 2018; 430:1725-1744. [PMID: 29601786 DOI: 10.1016/j.jmb.2018.03.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 03/14/2018] [Accepted: 03/19/2018] [Indexed: 11/18/2022]
Abstract
Huntingtin (HTT) fragments with extended polyglutamine tracts self-assemble into amyloid-like fibrillar aggregates. Elucidating the fibril formation mechanism is critical for understanding Huntington's disease pathology and for developing novel therapeutic strategies. Here, we performed systematic experimental and theoretical studies to examine the self-assembly of an aggregation-prone N-terminal HTT exon-1 fragment with 49 glutamines (Ex1Q49). Using high-resolution imaging techniques such as electron microscopy and atomic force microscopy, we show that Ex1Q49 fragments in cell-free assays spontaneously convert into large, highly complex bundles of amyloid fibrils with multiple ends and fibril branching points. Furthermore, we present experimental evidence that two nucleation mechanisms control spontaneous Ex1Q49 fibrillogenesis: (1) a relatively slow primary fibril-independent nucleation process, which involves the spontaneous formation of aggregation-competent fibrillary structures, and (2) a fast secondary fibril-dependent nucleation process, which involves nucleated branching and promotes the rapid assembly of highly complex fibril bundles with multiple ends. The proposed aggregation mechanism is supported by studies with the small molecule O4, which perturbs early events in the aggregation cascade and delays Ex1Q49 fibril assembly, comprehensive mathematical and computational modeling studies, and seeding experiments with small, preformed fibrillar Ex1Q49 aggregates that promote the assembly of amyloid fibrils. Together, our results suggest that nucleated branching in vitro plays a critical role in the formation of complex fibrillar HTT exon-1 aggregates with multiple ends.
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Affiliation(s)
- Anne S Wagner
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Antonio Z Politi
- Mathematical Modelling of Cellular Processes, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Anne Ast
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Kenny Bravo-Rodriguez
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 2, 45470 Mülheim an der Ruhr, Germany; Computational Biochemistry, University Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany
| | - Katharina Baum
- Mathematical Modelling of Cellular Processes, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Alexander Buntru
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Nadine U Strempel
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Lydia Brusendorf
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Christian Hänig
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Annett Boeddrich
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Stephanie Plassmann
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Konrad Klockmeier
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany
| | - Juan M Ramirez-Anguita
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 2, 45470 Mülheim an der Ruhr, Germany
| | - Elsa Sanchez-Garcia
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 2, 45470 Mülheim an der Ruhr, Germany; Computational Biochemistry, University Duisburg-Essen, Universitätsstr. 2, 45141 Essen, Germany
| | - Jana Wolf
- Mathematical Modelling of Cellular Processes, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany.
| | - Erich E Wanker
- Neuroproteomics, Max Delbrueck Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany.
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17
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Azami-Movahed M, Meratan AA, Ghasemi A, Ebrahim-Habibi A, Nemat-Gorgani M. Acetylation of lysine residues in apomyoglobin: Structural changes, amyloid fibrillation, and role of surface charge. Int J Biol Macromol 2018; 107:626-634. [DOI: 10.1016/j.ijbiomac.2017.09.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 09/11/2017] [Accepted: 09/13/2017] [Indexed: 12/21/2022]
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18
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Sami N, Rahman S, Kumar V, Zaidi S, Islam A, Ali S, Ahmad F, Hassan MI. Protein aggregation, misfolding and consequential human neurodegenerative diseases. Int J Neurosci 2017; 127:1047-1057. [PMID: 28110595 DOI: 10.1080/00207454.2017.1286339] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Proteins are major components of the biological functions in a cell. Biology demands that a protein must fold into its stable three-dimensional structure to become functional. In an unfavorable cellular environment, protein may get misfolded resulting in its aggregation. These conformational disorders are directly related to the tissue damage resulting in cellular dysfunction giving rise to different diseases. This way, several neurodegenerative diseases such as Alzheimer, Parkinson Huntington diseases and amyotrophic lateral sclerosis are caused. Misfolding of the protein is prevented by innate molecular chaperones of different classes. It is envisaged that work on this line is likely to translate the knowledge into the development of possible strategies for early diagnosis and efficient management of such related human diseases. The present review deals with the human neurodegenerative diseases caused due to the protein misfolding highlighting pathomechanisms and therapeutic intervention.
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Affiliation(s)
- Neha Sami
- a Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
| | - Safikur Rahman
- b Department of Medical Biotechnology , Yeungnam University , Gyeongsan , South Korea
| | - Vijay Kumar
- a Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
| | - Sobia Zaidi
- a Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
| | - Asimul Islam
- a Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
| | - Sher Ali
- a Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
| | - Faizan Ahmad
- a Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
| | - Md Imtaiyaz Hassan
- a Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
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19
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Braconi D, Millucci L, Bernini A, Spiga O, Lupetti P, Marzocchi B, Niccolai N, Bernardini G, Santucci A. Homogentisic acid induces aggregation and fibrillation of amyloidogenic proteins. Biochim Biophys Acta Gen Subj 2017; 1861:135-146. [DOI: 10.1016/j.bbagen.2016.11.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 11/11/2016] [Accepted: 11/15/2016] [Indexed: 10/20/2022]
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20
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Luo XD, Kong FL, Dang HB, Chen J, Liang Y. Macromolecular crowding favors the fibrillization of β2-microglobulin by accelerating the nucleation step and inhibiting fibril disassembly. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1864:1609-19. [DOI: 10.1016/j.bbapap.2016.07.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/23/2016] [Accepted: 07/28/2016] [Indexed: 12/21/2022]
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21
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Mikawa S, Mizuguchi C, Nishitsuji K, Baba T, Shigenaga A, Shimanouchi T, Sakashita N, Otaka A, Akaji K, Saito H. Heparin promotes fibril formation by the N-terminal fragment of amyloidogenic apolipoprotein A-I. FEBS Lett 2016; 590:3492-3500. [DOI: 10.1002/1873-3468.12426] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 09/05/2016] [Accepted: 09/11/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Shiho Mikawa
- Department of Biophysical Chemistry; Kyoto Pharmaceutical University; Japan
- Institute of Biomedical Sciences; Graduate School of Pharmaceutical Sciences; Tokushima University; Japan
| | - Chiharu Mizuguchi
- Department of Biophysical Chemistry; Kyoto Pharmaceutical University; Japan
- Institute of Biomedical Sciences; Graduate School of Pharmaceutical Sciences; Tokushima University; Japan
| | - Kazuchika Nishitsuji
- Department of Molecular Pathology; Institute of Biomedical Sciences; Tokushima University Graduate School; Japan
| | - Teruhiko Baba
- Biotechnology Research Institute for Drug Discovery; National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Japan
| | - Akira Shigenaga
- Institute of Biomedical Sciences; Graduate School of Pharmaceutical Sciences; Tokushima University; Japan
| | | | - Naomi Sakashita
- Department of Molecular Pathology; Institute of Biomedical Sciences; Tokushima University Graduate School; Japan
| | - Akira Otaka
- Institute of Biomedical Sciences; Graduate School of Pharmaceutical Sciences; Tokushima University; Japan
| | - Kenichi Akaji
- Department of Medicinal Chemistry; Kyoto Pharmaceutical University; Japan
| | - Hiroyuki Saito
- Department of Biophysical Chemistry; Kyoto Pharmaceutical University; Japan
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22
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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: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [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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23
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Ami D, Lavatelli F, Rognoni P, Palladini G, Raimondi S, Giorgetti S, Monti L, Doglia SM, Natalello A, Merlini G. In situ characterization of protein aggregates in human tissues affected by light chain amyloidosis: a FTIR microspectroscopy study. Sci Rep 2016; 6:29096. [PMID: 27373200 PMCID: PMC4931462 DOI: 10.1038/srep29096] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 06/15/2016] [Indexed: 11/09/2022] Open
Abstract
Light chain (AL) amyloidosis, caused by deposition of amyloidogenic immunoglobulin light chains (LCs), is the most common systemic form in industrialized countries. Still open questions, and premises for developing targeted therapies, concern the mechanisms of amyloid formation in vivo and the bases of organ targeting and dysfunction. Investigating amyloid material in its natural environment is crucial to obtain new insights on the molecular features of fibrillar deposits at individual level. To this aim, we used Fourier transform infrared (FTIR) microspectroscopy for studying in situ unfixed tissues (heart and subcutaneous abdominal fat) from patients affected by AL amyloidosis. We compared the infrared response of affected tissues with that of ex vivo and in vitro fibrils obtained from the pathogenic LC derived from one patient, as well as with that of non amyloid-affected tissues. We demonstrated that the IR marker band of intermolecular β-sheets, typical of protein aggregates, can be detected in situ in LC amyloid-affected tissues, and that FTIR microspectroscopy allows exploring the inter- and intra-sample heterogeneity. We extended the infrared analysis to the characterization of other biomolecules embedded within the amyloid deposits, finding an IR pattern that discloses a possible role of lipids, collagen and glycosaminoglycans in amyloid deposition in vivo.
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Affiliation(s)
- Diletta Ami
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
- Department of Physics, University of Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
| | - Francesca Lavatelli
- Amyloidosis Research and Treatment Center, Foundation IRCCS Policlinico San Matteo, and Department of Molecular Medicine, University of Pavia, Viale Golgi 19, 27100 Pavia, Italy
| | - Paola Rognoni
- Amyloidosis Research and Treatment Center, Foundation IRCCS Policlinico San Matteo, and Department of Molecular Medicine, University of Pavia, Viale Golgi 19, 27100 Pavia, Italy
| | - Giovanni Palladini
- Amyloidosis Research and Treatment Center, Foundation IRCCS Policlinico San Matteo, and Department of Molecular Medicine, University of Pavia, Viale Golgi 19, 27100 Pavia, Italy
| | - Sara Raimondi
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, via Taramelli 3b, 27100 Pavia, Italy
| | - Sofia Giorgetti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, via Taramelli 3b, 27100 Pavia, Italy
| | - Luca Monti
- Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, via Taramelli 3b, 27100 Pavia, Italy
| | - Silvia Maria Doglia
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
- Department of Physics, University of Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
| | - Antonino Natalello
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Giampaolo Merlini
- Amyloidosis Research and Treatment Center, Foundation IRCCS Policlinico San Matteo, and Department of Molecular Medicine, University of Pavia, Viale Golgi 19, 27100 Pavia, Italy
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24
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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] [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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25
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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] [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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26
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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] [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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Okoshi T, Yamaguchi I, Ozawa D, Hasegawa K, Naiki H. Endocytosed 2-Microglobulin Amyloid Fibrils Induce Necrosis and Apoptosis of Rabbit Synovial Fibroblasts by Disrupting Endosomal/Lysosomal Membranes: A Novel Mechanism on the Cytotoxicity of Amyloid Fibrils. PLoS One 2015; 10:e0139330. [PMID: 26421922 PMCID: PMC4589361 DOI: 10.1371/journal.pone.0139330] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 09/11/2015] [Indexed: 12/20/2022] Open
Abstract
Dialysis-related amyloidosis is a major complication in long-term hemodialysis patients. In dialysis-related amyloidosis, β2-microglobulin (β2-m) amyloid fibrils deposit in the osteoarticular tissue, leading to carpal tunnel syndrome and destructive arthropathy with cystic bone lesions, but the mechanism by which these amyloid fibrils destruct bone and joint tissue is not fully understood. In this study, we assessed the cytotoxic effect of β2-m amyloid fibrils on the cultured rabbit synovial fibroblasts. Under light microscopy, the cells treated with amyloid fibrils exhibited both necrotic and apoptotic changes, while the cells treated with β2-m monomers and vehicle buffer exhibited no morphological changes. As compared to β2-m monomers and vehicle buffer, β2-m amyloid fibrils significantly reduced cellular viability as measured by the lactate dehydrogenase release assay and the 3-(4,5-di-methylthiazol-2-yl)-2,5-diphenyltetrazolium bromide reduction assay and significantly increased the percentage of apoptotic cells as measured by the terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling method. β2-m amyloid fibrils added to the medium adhered to cell surfaces, but did not disrupt artificial plasma membranes as measured by the liposome dye release assay. Interestingly, when the cells were incubated with amyloid fibrils for several hours, many endosomes/lysosomes filled with amyloid fibrils were observed under confocal laser microscopy and electron microscopy, Moreover, some endosomal/lysosomal membranes were disrupted by intravesicular fibrils, leading to the leakage of the fibrils into the cytosol and adjacent to mitochondria. Inhibition of actin-dependent endocytosis by cytochalasin D attenuated the toxicity of amyloid fibrils. These results suggest that endocytosed β2-m amyloid fibrils induce necrosis and apoptosis by disrupting endosomal/lysosomal membranes, and this novel mechanism on the cytotoxicity of amyloid fibrils is described.
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Affiliation(s)
- Tadakazu Okoshi
- Division of Molecular Pathology, Department of Pathological Sciences, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Itaru Yamaguchi
- Division of Molecular Pathology, Department of Pathological Sciences, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Daisaku Ozawa
- Division of Molecular Pathology, Department of Pathological Sciences, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Kazuhiro Hasegawa
- Division of Molecular Pathology, Department of Pathological Sciences, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Hironobu Naiki
- Division of Molecular Pathology, Department of Pathological Sciences, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
- * E-mail:
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28
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Finka A, Sharma SK, Goloubinoff P. Multi-layered molecular mechanisms of polypeptide holding, unfolding and disaggregation by HSP70/HSP110 chaperones. Front Mol Biosci 2015; 2:29. [PMID: 26097841 PMCID: PMC4456865 DOI: 10.3389/fmolb.2015.00029] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 05/19/2015] [Indexed: 11/24/2022] Open
Abstract
Members of the HSP70/HSP110 family (HSP70s) form a central hub of the chaperone network controlling all aspects of proteostasis in bacteria and the ATP-containing compartments of eukaryotic cells. The heat-inducible form HSP70 (HSPA1A) and its major cognates, cytosolic HSC70 (HSPA8), endoplasmic reticulum BIP (HSPA5), mitochondrial mHSP70 (HSPA9) and related HSP110s (HSPHs), contribute about 3% of the total protein mass of human cells. The HSP70s carry out a plethora of housekeeping cellular functions, such as assisting proper de novo folding, assembly and disassembly of protein complexes, pulling polypeptides out of the ribosome and across membrane pores, activating and inactivating signaling proteins and controlling their degradation. The HSP70s can induce structural changes in alternatively folded protein conformers, such as clathrin cages, hormone receptors and transcription factors, thereby regulating vesicular trafficking, hormone signaling and cell differentiation in development and cancer. To carry so diverse cellular housekeeping and stress-related functions, the HSP70s act as ATP-fuelled unfolding nanomachines capable of switching polypeptides between different folded states. During stress, the HSP70s can bind (hold) and prevent the aggregation of misfolding proteins and thereafter act alone or in collaboration with other unfolding chaperones to solubilize protein aggregates. Here, we discuss the common ATP-dependent mechanisms of holding, unfolding-by-clamping and unfolding-by-entropic pulling, by which the HSP70s can apparently convert various alternatively folded and misfolded polypeptides into differently active conformers. Understanding how HSP70s can prevent the formation of cytotoxic protein aggregates, pull, unfold, and solubilize them into harmless species is central to the design of therapies against protein conformational diseases.
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Affiliation(s)
- Andrija Finka
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne Lausanne, Switzerland ; Laboratoire de Biophysique Statistique, School of Basic Sciences, École Polytechnique Fédérale de Lausanne Lausanne, Switzerland
| | | | - Pierre Goloubinoff
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne Lausanne, Switzerland
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29
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Qing LL, Zhao H, Liu LL. Progress on low susceptibility mechanisms of transmissible spongiform encephalopathies. DONG WU XUE YAN JIU = ZOOLOGICAL RESEARCH 2015; 35:436-45. [PMID: 25297084 DOI: 10.13918/j.issn.2095-8137.2014.5.436] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Transmissible spongiform encephalopathies (TSEs), also known as prion diseases, are a group of fatal neurodegenerative diseases detected in a wide range of mammalian species. The "protein-only" hypothesis of TSE suggests that prions are transmissible particles devoid of nucleic acid and the primary pathogenic event is thought to be the conversion of cellular prion protein (PrP(C)) into the disease-associated isoform (PrP(Sc)). According to susceptibility to TSEs, animals can be classified into susceptible species and low susceptibility species. In this review we focus on several species with low susceptibility to TSEs: dogs, rabbits, horses and buffaloes. We summarize recent studies into the characteristics of low susceptibility regarding protein structure, and biochemical and genetic properties.
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Affiliation(s)
- Li-Li Qing
- Laboratory of Conservation and Utilization of Bio-resources, Yunnan University, Kunming 650091, China
| | - Hui Zhao
- Laboratory of Conservation and Utilization of Bio-resources, Yunnan University, Kunming 650091, China.
| | - Lin-Lin Liu
- Laboratory of Conservation and Utilization of Bio-resources, Yunnan University, Kunming 650091, China
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30
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Abstract
β2-Microglobulin is responsible for systemic amyloidosis affecting patients undergoing long-term hemodialysis. Its genetic variant D76N causes a very rare form of familial systemic amyloidosis. These two types of amyloidoses differ significantly in terms of the tissue localization of deposits and for major pathological features. Considering how the amyloidogenesis of the β2-microglobulin mechanism has been scrutinized in depth for the last three decades, the comparative analysis of molecular and pathological properties of wild type β2-microglobulin and of the D76N variant offers a unique opportunity to critically reconsider the current understanding of the relation between the protein's structural properties and its pathologic behavior.
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Affiliation(s)
- Monica Stoppini
- From the Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy and
| | - Vittorio Bellotti
- From the Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, 27100 Pavia, Italy and the Wolfson Drug Discovery Unit, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, University College London, London NW3 2PF, United Kingdom
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31
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Nguyen PT, Andraka N, De Carufel CA, Bourgault S. Mechanistic Contributions of Biological Cofactors in Islet Amyloid Polypeptide Amyloidogenesis. J Diabetes Res 2015; 2015:515307. [PMID: 26576436 PMCID: PMC4630397 DOI: 10.1155/2015/515307] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 01/26/2015] [Accepted: 02/09/2015] [Indexed: 01/24/2023] Open
Abstract
Type II diabetes mellitus is associated with the deposition of fibrillar aggregates in pancreatic islets. The major protein component of islet amyloids is the glucomodulatory hormone islet amyloid polypeptide (IAPP). Islet amyloid fibrils are virtually always associated with several biomolecules, including apolipoprotein E, metals, glycosaminoglycans, and various lipids. IAPP amyloidogenesis has been originally perceived as a self-assembly homogeneous process in which the inherent aggregation propensity of the peptide and its local concentration constitute the major driving forces to fibrillization. However, over the last two decades, numerous studies have shown a prominent role of amyloid cofactors in IAPP fibrillogenesis associated with the etiology of type II diabetes. It is increasingly evident that the biochemical microenvironment in which IAPP amyloid formation occurs and the interactions of the polypeptide with various biomolecules not only modulate the rate and extent of aggregation, but could also remodel the amyloidogenesis process as well as the structure, toxicity, and stability of the resulting fibrils.
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Affiliation(s)
- Phuong Trang Nguyen
- Department of Chemistry, Pharmaqam, University of Quebec in Montreal, Montreal, QC, Canada H3C 3P8
- Quebec Network for Research on Protein Function, Structure, and Engineering (PROTEO), Canada
| | - Nagore Andraka
- Department of Chemistry, Pharmaqam, University of Quebec in Montreal, Montreal, QC, Canada H3C 3P8
- Quebec Network for Research on Protein Function, Structure, and Engineering (PROTEO), Canada
- Biophysics Unit (CSIC, UPV/EHU) and Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country, 48080 Bilbao, Spain
| | - Carole Anne De Carufel
- Department of Chemistry, Pharmaqam, University of Quebec in Montreal, Montreal, QC, Canada H3C 3P8
- Quebec Network for Research on Protein Function, Structure, and Engineering (PROTEO), Canada
| | - Steve Bourgault
- Department of Chemistry, Pharmaqam, University of Quebec in Montreal, Montreal, QC, Canada H3C 3P8
- Quebec Network for Research on Protein Function, Structure, and Engineering (PROTEO), Canada
- *Steve Bourgault:
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How does domain replacement affect fibril formation of the rabbit/human prion proteins. PLoS One 2014; 9:e113238. [PMID: 25401497 PMCID: PMC4234653 DOI: 10.1371/journal.pone.0113238] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 10/25/2014] [Indexed: 12/16/2022] Open
Abstract
Background It is known that in vivo human prion protein (PrP) have the tendency to form fibril deposits and are associated with infectious fatal prion diseases, while the rabbit PrP does not readily form fibrils and is unlikely to cause prion diseases. Although we have previously demonstrated that amyloid fibrils formed by the rabbit PrP and the human PrP have different secondary structures and macromolecular crowding has different effects on fibril formation of the rabbit/human PrPs, we do not know which domains of PrPs cause such differences. In this study, we have constructed two PrP chimeras, rabbit chimera and human chimera, and investigated how domain replacement affects fibril formation of the rabbit/human PrPs. Methodology/Principal Findings As revealed by thioflavin T binding assays and Sarkosyl-soluble SDS-PAGE, the presence of a strong crowding agent dramatically promotes fibril formation of both chimeras. As evidenced by circular dichroism, Fourier transform infrared spectroscopy, and proteinase K digestion assays, amyloid fibrils formed by human chimera have secondary structures and proteinase K-resistant features similar to those formed by the human PrP. However, amyloid fibrils formed by rabbit chimera have proteinase K-resistant features and secondary structures in crowded physiological environments different from those formed by the rabbit PrP, and secondary structures in dilute solutions similar to the rabbit PrP. The results from transmission electron microscopy show that macromolecular crowding caused human chimera but not rabbit chimera to form short fibrils and non-fibrillar particles. Conclusions/Significance We demonstrate for the first time that the domains beyond PrP-H2H3 (β-strand 1, α-helix 1, and β-strand 2) have a remarkable effect on fibrillization of the rabbit PrP but almost no effect on the human PrP. Our findings can help to explain why amyloid fibrils formed by the rabbit PrP and the human PrP have different secondary structures and why macromolecular crowding has different effects on fibrillization of PrPs from different species.
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33
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Muneeruddin K, Thomas JJ, Salinas PA, Kaltashov IA. Characterization of small protein aggregates and oligomers using size exclusion chromatography with online detection by native electrospray ionization mass spectrometry. Anal Chem 2014; 86:10692-9. [PMID: 25310183 DOI: 10.1021/ac502590h] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Self-association of proteins is important in a variety of processes ranging from acquisition of native quaternary structure (where the association is tightly controlled and proceeds in a highly ordered fashion) to aggregation and amyloidosis. The latter is frequently accompanied (or indeed triggered) by the loss of the native structure, but a clear understanding of the complex relationship between conformational changes and protein self-association/aggregation remains elusive due to the great difficulty in characterizing these complex and frequently heterogeneous species. In this study, size exclusion chromatography (SEC) was used in combination with online detection by native electrospray ionization mass spectrometry (ESI MS) to characterize a commercial protein sample (serum albumin) that forms small aggregates. Although noncovalent dimers and trimers of this protein are readily detected by native ESI MS alone, combination of SEC and ESI MS allows a distinction to be made between the oligomers present in solution and those formed during the ESI process (artifacts of ESI MS). Additionally, native ESI MS detection allows a partial loss of conformation integrity to be detected across all albumin species present in solution. Finally, ESI MS detection allows these analyses to be carried out readily even in the presence of other abundant proteins coeluting with albumin. Native ESI MS as an online detection method for SEC also enables meaningful characterization of species representing different quaternary organization of a recombinant glycoprotein human arylsulfatase A even when their rapid interconversion prevents their separation on the SEC time scale.
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Affiliation(s)
- Khaja Muneeruddin
- Department of Chemistry, University of Massachusetts-Amherst , Amherst, Massachusetts 01003, United States
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Kobayashi Y, Tsutsumi H, Abe T, Ikeda K, Tashiro Y, Unzai S, Kamikubo H, Kataoka M, Hiroaki H, Hamada D. Decreased amyloidogenicity caused by mutational modulation of surface properties of the immunoglobulin light chain BRE variable domain. Biochemistry 2014; 53:5162-73. [PMID: 25062800 DOI: 10.1021/bi5007892] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Amyloid formation by immunoglobulin light chain (LC) proteins is associated with amyloid light chain (AL) amyloidosis. Destabilization of the native state of the variable domain of the LC (VL) is known to be one of the critical factors in promoting the formation of amyloid fibrils. However, determining the key residues involved in this destabilization remains challenging, because of the existence of a number of intrinsic sequence variations within VL. In this study, we identified the key residues for destabilization of the native state of amyloidogenic VL in the LC of BRE by analyzing the stability of chimeric mutants of BRE and REI VL; the latter immunoglobulin is not associated with AL amyloidosis. The results suggest that the surface-exposed residues N45 and D50 are the key residues in the destabilization of the native state of BRE VL. Point mutations at the corresponding residues in REI VL (K45N, E50D, and K45N/E50D) destabilized the native state and increased amyloidogenicity. However, the reverse mutations in BRE VL (N45K, D50E, and N45K/D50E) re-established the native state and decreased amyloidogenicity. Thus, analyses using chimeras and point mutants successfully elucidated the key residues involved in BRE VL destabilization and increased amyloidogenic propensity. These results also suggest that the modulation of surface properties of wild-type VL may improve their stability and prevent the formation of amyloid fibrils.
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Affiliation(s)
- Yuta Kobayashi
- Division of Structural Biology, Department of Biochemistry and Molecular Biology, Graduate School of Medicine, Kobe University , 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
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Obici L, Merlini G. An overview of drugs currently under investigation for the treatment of transthyretin-related hereditary amyloidosis. Expert Opin Investig Drugs 2014; 23:1239-51. [PMID: 25003808 DOI: 10.1517/13543784.2014.922541] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Transthyretin (TTR)-related hereditary amyloidosis is an adult-onset, dominantly inherited, systemic neurodegenerative disease endemic in some populations. Stabilization of the native structure of TTR by small-molecule ligands has recently proved effective in slowing neurological progression. Two drugs, tafamidis and diflunisal, are now available for most patients, particularly in the early stage of the disease. However, this disorder remains life threatening with several unmet needs. There are great expectations for a number of novel agents undergoing investigation. AREAS COVERED The authors review the current investigational drugs for the treatment of TTR amyloidosis according to the different steps of the fibrillogenesis process they target. Innovative approaches include suppression of TTR secretion, prevention of TTR misfolding by stronger stabilizers identified through structure-based design and high-throughput screening methodologies as well as the redirection of pathogenic aggregates toward nontoxic species and reabsorption of deposits through amyloid disrupters and immunotherapy. EXPERT OPINION Suppression of TTR synthesis by antisense oligonucleotides and small-interfering RNA is presently one of the most promising therapeutic approaches. However, well-designed clinical trials are required to establish their safety and efficacy compared with liver transplantation, tafamidis and diflunisal. With a longer time frame, it may be possible to develop combination therapies that target multiple steps of the aggregation process that could provide the best long-life effective treatments for this devastating disease.
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Affiliation(s)
- Laura Obici
- Amyloidosis Research and Treatment Center, IRCCS Fondazione Policlinico San Matteo , Viale Golgi, 19, 27100 Pavia , Italy
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36
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Hauser CAE, Maurer-Stroh S, Martins IC. Amyloid-based nanosensors and nanodevices. Chem Soc Rev 2014; 43:5326-45. [DOI: 10.1039/c4cs00082j] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Intermolecular β-strand networks avoid hub residues and favor low interconnectedness: a potential protection mechanism against chain dissociation upon mutation. PLoS One 2014; 9:e94745. [PMID: 24733378 PMCID: PMC3986249 DOI: 10.1371/journal.pone.0094745] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 03/19/2014] [Indexed: 01/11/2023] Open
Abstract
Altogether few protein oligomers undergo a conformational transition to a state that impairs their function and leads to diseases. But when it happens, the consequences are not harmless and the so-called conformational diseases pose serious public health problems. Notorious examples are the Alzheimer's disease and some cancers associated with a conformational change of the amyloid precursor protein (APP) and of the p53 tumor suppressor, respectively. The transition is linked with the propensity of β-strands to aggregate into amyloid fibers. Nevertheless, a huge number of protein oligomers associate chains via β-strand interactions (intermolecular β-strand interface) without ever evolving into fibers. We analyzed the layout of 1048 intermolecular β-strand interfaces looking for features that could provide the β-strands resistance to conformational transitions. The interfaces were reconstructed as networks with the residues as the nodes and the interactions between residues as the links. The networks followed an exponential decay degree distribution, implying an absence of hubs and nodes with few links. Such layout provides robustness to changes. Few links per nodes do not restrict the choices of amino acids capable of making an interface and maintain high sequence plasticity. Few links reduce the “bonding” cost of making an interface. Finally, few links moderate the vulnerability to amino acid mutation because it entails limited communication between the nodes. This confines the effects of a mutation to few residues instead of propagating them to many residues via hubs. We propose that intermolecular β-strand interfaces are organized in networks that tolerate amino acid mutation to avoid chain dissociation, the first step towards fiber formation. This is tested by looking at the intermolecular β-strand network of the p53 tetramer.
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Phay M, Blinder V, Macy S, Greene MJ, Wooliver DC, Liu W, Planas A, Walsh DM, Connors LH, Primmer SR, Planque SA, Paul S, O'Nuallain B. Transthyretin Aggregate-Specific Antibodies Recognize Cryptic Epitopes on Patient-Derived Amyloid Fibrils. Rejuvenation Res 2014; 17:97-104. [DOI: 10.1089/rej.2013.1524] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Monichan Phay
- The Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Veronika Blinder
- The Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Sallie Macy
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, Tennessee
| | - Michael J. Greene
- Amyloidosis Center, Boston University School of Medicine, Boston, Massachusetts
| | - Daniel C. Wooliver
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, Tennessee
| | - Wen Liu
- The Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Antoni Planas
- Laboratory of Biochemistry, Institut Químic de Sarrià, Universitat Ramon Llull, Barcelona, Spain
| | - Dominic M. Walsh
- The Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Lawreen H. Connors
- Amyloidosis Center, Boston University School of Medicine, Boston, Massachusetts
| | | | - Stephanie A. Planque
- Chemical Immunology Research Center, University of Texas-Houston Medical School, Houston, Texas
| | - Sudhir Paul
- Chemical Immunology Research Center, University of Texas-Houston Medical School, Houston, Texas
| | - Brian O'Nuallain
- The Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
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Rombach-Riegraf V, Karle AC, Wolf B, Sordé L, Koepke S, Gottlieb S, Krieg J, Djidja MC, Baban A, Spindeldreher S, Koulov AV, Kiessling A. Aggregation of human recombinant monoclonal antibodies influences the capacity of dendritic cells to stimulate adaptive T-cell responses in vitro. PLoS One 2014; 9:e86322. [PMID: 24466023 PMCID: PMC3897673 DOI: 10.1371/journal.pone.0086322] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 12/07/2013] [Indexed: 12/14/2022] Open
Abstract
Subvisible proteinaceous particles which are present in all therapeutic protein formulations are in the focus of intense discussions between health authorities, academics and biopharmaceutical companies in the context of concerns that such particles could promote unwanted immunogenicity via anti-drug antibody formation. In order to provide further understanding of the subject, this study closely examines the specific biological effects proteinaceous particles may exert on dendritic cells (DCs) as the most efficient antigen-presenting cell population crucial for the initiation of the adaptive immune response. Two different model IgG antibodies were subjected to three different types of exaggerated physical stress to generate subvisible particles in far greater concentrations than the ones typical for the currently marketed biotherapeutical antibodies. The aggregated samples were used in in vitro biological assays in order to interrogate the early DC-driven events that initiate CD4 T-cell dependent humoral adaptive immune responses – peptide presentation capacity and co-stimulatory activity of DCs. Most importantly, antigen presentation was addressed with a unique approach called MHC-associated Peptide Proteomics (MAPPs), which allows for identifying the sequences of HLA-DR associated peptides directly from human dendritic cells. The experiments demonstrated that highly aggregated solutions of two model mAbs generated under controlled conditions can induce activation of human monocyte-derived DCs as indicated by upregulation of typical maturation markers including co-stimulatory molecules necessary for CD4 T-cell activation. Additional data suggest that highly aggregated proteins could induce in vitro T-cell responses. Intriguingly, strong aggregation-mediated changes in the pattern and quantity of antigen-derived HLA-DR associated peptides presented on DCs were observed, indicating a change in protein processing and presentation. Increasing the amounts of subvisible proteinaceous particles correlated very well with the pronounced increase in the peptide number and clusters presented in the context of class II HLA-DR molecules, suggesting a major involvement of a mass-action mechanism of altering the presentation.
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Affiliation(s)
- Verena Rombach-Riegraf
- Novartis Pharma AG, Technical R&D, Biologics Process R&D, Late Phase Analytical & Pharmaceutical Development, Werk Klybeck, Basel, Switzerland
- * E-mail: (VR-R); (ACK); (AK)
| | - Anette C. Karle
- Novartis Pharma AG, Integrated Biologics Profiling Unit, Immunogenicity Risk Assessment, Werk Klybeck, Basel, Switzerland
- * E-mail: (VR-R); (ACK); (AK)
| | - Babette Wolf
- Novartis Pharma AG, Pre-clinical Safety, Biologics Safety and Disposition, Experimental Pathology, Immunosafety, Werk Klybeck, Basel, Switzerland
| | - Laetitia Sordé
- Novartis Pharma AG, Integrated Biologics Profiling Unit, Immunogenicity Risk Assessment, Werk Klybeck, Basel, Switzerland
| | - Stephan Koepke
- Novartis Pharma AG, Integrated Biologics Profiling Unit, Immunogenicity Risk Assessment, Werk Klybeck, Basel, Switzerland
| | - Sascha Gottlieb
- Novartis Pharma AG, Integrated Biologics Profiling Unit, Immunogenicity Risk Assessment, Werk Klybeck, Basel, Switzerland
| | - Jennifer Krieg
- Novartis Pharma AG, Pre-clinical Safety, Biologics Safety and Disposition, Experimental Pathology, Immunosafety, Werk Klybeck, Basel, Switzerland
| | - Marie-Claude Djidja
- Novartis Pharma AG, Technical R&D, Biologics Process R&D, Late Phase Analytical & Pharmaceutical Development, Werk Klybeck, Basel, Switzerland
| | - Aida Baban
- Novartis Pharma AG, Pre-clinical Safety Biologics Safety and Disposition, Bioanalytics, Werk Klybeck, Basel, Switzerland
| | - Sebastian Spindeldreher
- Novartis Pharma AG, Pre-clinical Safety Biologics Safety and Disposition, Bioanalytics, Werk Klybeck, Basel, Switzerland
| | - Atanas V. Koulov
- Novartis Pharma AG, Technical R&D, Biologics Process R&D, Late Phase Analytical & Pharmaceutical Development, Werk Klybeck, Basel, Switzerland
| | - Andrea Kiessling
- Novartis Pharma AG, Pre-clinical Safety, Biologics Safety and Disposition, Experimental Pathology, Immunosafety, Werk Klybeck, Basel, Switzerland
- * E-mail: (VR-R); (ACK); (AK)
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Relini A, Marano N, Gliozzi A. Misfolding of amyloidogenic proteins and their interactions with membranes. Biomolecules 2013; 4:20-55. [PMID: 24970204 PMCID: PMC4030986 DOI: 10.3390/biom4010020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/13/2013] [Accepted: 12/17/2013] [Indexed: 01/07/2023] Open
Abstract
In this paper, we discuss amyloidogenic proteins, their misfolding, resulting structures, and interactions with membranes, which lead to membrane damage and subsequent cell death. Many of these proteins are implicated in serious illnesses such as Alzheimer’s disease and Parkinson’s disease. Misfolding of amyloidogenic proteins leads to the formation of polymorphic oligomers and fibrils. Oligomeric aggregates are widely thought to be the toxic species, however, fibrils also play a role in membrane damage. We focus on the structure of these aggregates and their interactions with model membranes. Study of interactions of amlyoidogenic proteins with model and natural membranes has shown the importance of the lipid bilayer in protein misfolding and aggregation and has led to the development of several models for membrane permeabilization by the resulting amyloid aggregates. We discuss several of these models: formation of structured pores by misfolded amyloidogenic proteins, extraction of lipids, interactions with receptors in biological membranes, and membrane destabilization by amyloid aggregates perhaps analogous to that caused by antimicrobial peptides.
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Affiliation(s)
- Annalisa Relini
- Department of Physics, University of Genoa, Genoa 16146, Italy.
| | - Nadia Marano
- Department of Physics, University of Genoa, Genoa 16146, Italy.
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Ma Q, Hu JY, Chen J, Liang Y. The role of crowded physiological environments in prion and prion-like protein aggregation. Int J Mol Sci 2013; 14:21339-52. [PMID: 24284393 PMCID: PMC3856008 DOI: 10.3390/ijms141121339] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 09/24/2013] [Accepted: 09/27/2013] [Indexed: 01/07/2023] Open
Abstract
Prion diseases and prion- like protein misfolding diseases are related to the accumulation of abnormal aggregates of the normal host proteins including prion proteins and Tau protein. These proteins possess self-templating and transmissible characteristics. The crowded physiological environments where the aggregation of these amyloidogenic proteins takes place can be imitated in vitro by the addition of macromolecular crowding agents such as inert polysaccharides. In this review, we summarize the aggregation of prion proteins in crowded physiological environments and discuss the role of macromolecular crowding in prion protein aggregation. We also summarize the aggregation of prion- like proteins including human Tau protein, human α-synuclein, and human copper, zinc superoxide dismutase under macromolecular crowding environments and discuss the role of macromolecular crowding in prion- like protein aggregation. The excluded-volume effects caused by macromolecular crowding could accelerate the aggregation of neurodegenerative disease-associated proteins while inhibiting the aggregation of the proteins that are not neurodegenerative disease-associated.
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Affiliation(s)
- Qian Ma
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, China.
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Brambilla F, Lavatelli F, Di Silvestre D, Valentini V, Palladini G, Merlini G, Mauri P. Shotgun Protein Profile of Human Adipose Tissue and Its Changes in Relation to Systemic Amyloidoses. J Proteome Res 2013; 12:5642-55. [DOI: 10.1021/pr400583h] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
| | - Francesca Lavatelli
- Amyloid
Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | | | - Veronica Valentini
- Amyloid
Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Giovanni Palladini
- Amyloid
Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department
of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Giampaolo Merlini
- Amyloid
Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department
of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Pierluigi Mauri
- Institute for Biomedical Technologies (ITB-CNR), Segrate, Italy
- Institute of Life Sciences, Scuola
Superiore Sant’Anna, Pisa, Italy
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Sultan A, Raman B, Rao CM, Tangirala R. The extracellular chaperone haptoglobin prevents serum fatty acid-promoted amyloid fibril formation of β2-microglobulin, resistance to lysosomal degradation, and cytotoxicity. J Biol Chem 2013; 288:32326-32342. [PMID: 24078632 DOI: 10.1074/jbc.m113.498337] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Fibril formation of β2-microglobulin and associated inflammation occur in patients on long term dialysis. We show that the plasma protein haptoglobin prevents the fatty acid-promoted de novo fibril formation of β2-microglobulin even at substoichiometric concentration. The fibrils are cytotoxic, and haptoglobin abolishes the cytotoxicity by preventing fibril formation. Haptoglobin does not alleviate the cytotoxicity of preformed fibrils. Fibrillar β2-microglobulin is resistant to lysosomal degradation. However, the species of β2-microglobulin populated in the presence of haptoglobin is susceptible to degradation. We observed that haptoglobin interacts with oligomeric prefibrillar species of β2-microglobulin but not with monomeric or fibrillar β2-microglobulin that may underlie the molecular mechanism. 1,1'-Bis(4-anilino)naphthalene-5,5'-disulfonic acid cross-linking to haptoglobin significantly compromises its chaperone activity, suggesting the involvement of hydrophobic surfaces. Haptoglobin is an acute phase protein whose level increases severalfold during inflammation, where local acidosis can occur. Our data show that haptoglobin prevents fibril formation of β2-microglobulin under conditions of physiological acidosis (between pH 5.5 and 6.5) but with relatively decreased efficiency. However, compromise in its chaperone activity under these conditions is more than compensated by its increased level of expression under inflammation. Erythrolysis is known to release hemoglobin into the plasma. Haptoglobin forms a 1:1 (mol/mol) complex with hemoglobin. This complex, like haptoglobin, interacts with the prefibrillar species of β2-microglobulin, preventing its fibril formation and the associated cytotoxicity and resistance to intracellular degradation. Thus, our study demonstrates that haptoglobin is a potential extracellular chaperone for β2-microglobulin even in moderately acidic conditions relevant during inflammation, with promising therapeutic implications in β2-microglobulin amyloid-related diseases.
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Affiliation(s)
- Abdullah Sultan
- From the Council of Scientific and Industrial Research-Centre for Cellular and Molecular Biology, Hyderabad 500 007, India
| | - Bakthisaran Raman
- From the Council of Scientific and Industrial Research-Centre for Cellular and Molecular Biology, Hyderabad 500 007, India
| | - Ch Mohan Rao
- From the Council of Scientific and Industrial Research-Centre for Cellular and Molecular Biology, Hyderabad 500 007, India.
| | - Ramakrishna Tangirala
- From the Council of Scientific and Industrial Research-Centre for Cellular and Molecular Biology, Hyderabad 500 007, India.
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Mangione PP, Esposito G, Relini A, Raimondi S, Porcari R, Giorgetti S, Corazza A, Fogolari F, Penco A, Goto Y, Lee YH, Yagi H, Cecconi C, Naqvi MM, Gillmore JD, Hawkins PN, Chiti F, Rolandi R, Taylor GW, Pepys MB, Stoppini M, Bellotti V. Structure, folding dynamics, and amyloidogenesis of D76N β2-microglobulin: roles of shear flow, hydrophobic surfaces, and α-crystallin. J Biol Chem 2013; 288:30917-30. [PMID: 24014031 PMCID: PMC3829406 DOI: 10.1074/jbc.m113.498857] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Systemic amyloidosis is a fatal disease caused by misfolding of native globular proteins, which then aggregate extracellularly as insoluble fibrils, damaging the structure and function of affected organs. The formation of amyloid fibrils in vivo is poorly understood. We recently identified the first naturally occurring structural variant, D76N, of human β2-microglobulin (β2m), the ubiquitous light chain of class I major histocompatibility antigens, as the amyloid fibril protein in a family with a new phenotype of late onset fatal hereditary systemic amyloidosis. Here we show that, uniquely, D76N β2m readily forms amyloid fibrils in vitro under physiological extracellular conditions. The globular native fold transition to the fibrillar state is primed by exposure to a hydrophobic-hydrophilic interface under physiological intensity shear flow. Wild type β2m is recruited by the variant into amyloid fibrils in vitro but is absent from amyloid deposited in vivo. This may be because, as we show here, such recruitment is inhibited by chaperone activity. Our results suggest general mechanistic principles of in vivo amyloid fibrillogenesis by globular proteins, a previously obscure process. Elucidation of this crucial causative event in clinical amyloidosis should also help to explain the hitherto mysterious timing and location of amyloid deposition.
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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
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Montagna G, Cazzulani B, Obici L, Uggetti C, Giorgetti S, Porcari R, Ruggiero R, Mangione PP, Brambilla M, Lucchetti J, Guiso G, Gobbi M, Merlini G, Salmona M, Stoppini M, Villa G, Bellotti V. Benefit of doxycycline treatment on articular disability caused by dialysis related amyloidosis. Amyloid 2013; 20:173-8. [PMID: 23734692 DOI: 10.3109/13506129.2013.803463] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract Doxycycline inhibits amyloid formation in vitro and its therapeutic efficacy is under evaluation in clinical trials for different protein conformational diseases, including prion diseases, Alzheimer's disease and transthyretin amyloidosis. In patients on chronic hemodialysis, a persistently high concentration of β2-microglobulin causes a form of amyloidosis (dialysis-related amyloidosis, DRA) localized in bones and ligaments. Since doxycycline inhibits β2-microglobulin fibrillogenesis in vitro and accumulates in bones, DRA represents an ideal form of amyloidosis where doxycycline may reach a therapeutic concentration at the site of amyloid deposition. Three patients on long-term dialysis with severe articular impairment and uncontrollable pain due to DRA were treated with 100 mg of doxycycline daily. Pharmacokinetics and safety of treatment were conducted. Plasmatic levels of the drug reached a plateau after one week (1.1-2.3 µg/ml). Treatment was well tolerated in two patients for a year, while one was suspended after 5 months due to mild esophagitis. Treatment was associated with a significant reduction in articular pain and with a significant and measurable improvement in passive and active movements in all cases, despite the persistence of unchanged amyloid deposits measured by magnetic resonance imaging.
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Affiliation(s)
- Giovanni Montagna
- Division of Nephrology and Hemodialysis, Salvatore Maugeri Foundation, IRCCS Rehabilitation Institute, Pavia, Italy
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46
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Rombach-Riegraf V, Allard C, Angevaare E, Matter A, Ossuli B, Strehl R, Raulf F, Bluemel M, Egodage K, Jeschke M, Koulov AV. Size fractionation of microscopic protein aggregates using a preparative fluorescence-activated cell sorter. J Pharm Sci 2013; 102:2128-35. [PMID: 23695958 DOI: 10.1002/jps.23532] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 11/07/2022]
Abstract
Protein aggregation, which takes place both in vivo and in vitro, is an important degradative pathway for all proteins. Protein aggregates have distinct physicochemical and biological properties that are important to study and characterize from the perspective of both fundamental and applied sciences. The size of protein aggregates varies across a huge range, spanning several orders of magnitude. Currently, protein aggregates larger than hundreds of nanometers in diameter are impossible to physically fractionate. Here, we present a new method to fractionate microscopic proteinaceous particles using preparative fluorescence-activated cell sorting technology.
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Espinosa Angarica V, Ventura S, Sancho J. Discovering putative prion sequences in complete proteomes using probabilistic representations of Q/N-rich domains. BMC Genomics 2013; 14:316. [PMID: 23663289 PMCID: PMC3654983 DOI: 10.1186/1471-2164-14-316] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 05/06/2013] [Indexed: 01/23/2023] Open
Abstract
Background Prion proteins conform a special class among amyloids due to their ability to transmit aggregative folds. Prions are known to act as infectious agents in neurodegenerative diseases in animals, or as key elements in transcription and translation processes in yeast. It has been suggested that prions contain specific sequential domains with distinctive amino acid composition and physicochemical properties that allow them to control the switch between soluble and β-sheet aggregated states. Those prion-forming domains are low complexity segments enriched in glutamine/asparagine and depleted in charged residues and prolines. Different predictive methods have been developed to discover novel prions by either assessing the compositional bias of these stretches or estimating the propensity of protein sequences to form amyloid aggregates. However, the available algorithms hitherto lack a thorough statistical calibration against large sequence databases, which makes them unable to accurately predict prions without retrieving a large number of false positives. Results Here we present a computational strategy to predict putative prion-forming proteins in complete proteomes using probabilistic representations of prionogenic glutamine/asparagine rich regions. After benchmarking our predictive model against large sets of non-prionic sequences, we were able to filter out known prions with high precision and accuracy, generating prediction sets with few false positives. The algorithm was used to scan all the proteomes annotated in public databases for the presence of putative prion proteins. We analyzed the presence of putative prion proteins in all taxa, from viruses and archaea to plants and higher eukaryotes, and found that most organisms encode evolutionarily unrelated proteins with susceptibility to behave as prions. Conclusions To our knowledge, this is the first wide-ranging study aiming to predict prion domains in complete proteomes. Approaches of this kind could be of great importance to identify potential targets for further experimental testing and to try to reach a deeper understanding of prions’ functional and regulatory mechanisms.
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Affiliation(s)
- Vladimir Espinosa Angarica
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Pedro Cerbuna 12, Zaragoza 50009, Spain
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Cerato-Populin and Cerato-Platanin, Two Non-Catalytic Proteins from Phytopathogenic Fungi, Interact with Hydrophobic Inanimate Surfaces and Leaves. Mol Biotechnol 2012; 55:27-42. [DOI: 10.1007/s12033-012-9618-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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49
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Merlo S, Barillaro G, Carpignano F, Silva G, Surdo S, Strambini LM, Giorgetti S, Nichino D, Relini A, Mazzini G, Stoppini M, Bellotti V. Fibrillogenesis of human β2 -microglobulin in three-dimensional silicon microstructures. JOURNAL OF BIOPHOTONICS 2012; 5:785-792. [PMID: 22271711 DOI: 10.1002/jbio.201100132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 01/03/2012] [Accepted: 01/04/2012] [Indexed: 05/31/2023]
Abstract
The authors describe the interaction of biological nanostructures formed by β(2) -microglobulin amyloid fibrils with three-dimensional silicon microstructures consisting in periodic arrays of vertical silicon walls (≈3 μm-thick) separated by 50 μm-deep air gaps (≈5 μm-wide). These structures are of great interest from a biological point of view since they well mimic the interstitial environment typical of amyloid deposition in vivo. Moreover, they behave as hybrid photonic crystals, potentially applicable as optical transducers for label-free detection of the kinetics of amyloid fibrils formation. Fluorescence and atomic force microscopy (AFM) show that a uniform distribution of amyloid fibrils is achieved when fibrillogenesis occurs directly on silicon. The high resolution AFM images also demonstrate that amyloid fibrils grown on silicon are characterized by the same fine structure typically ensured by fibrillogenesis in solution.
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Affiliation(s)
- Sabina Merlo
- Dipartimento di Elettronica, Università di Pavia, Via Ferrata 1, 27100 Pavia, Italy.
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50
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Rea I, Giardina P, Longobardi S, Porro F, Casuscelli V, Rendina I, De Stefano L. Hydrophobin Vmh2-glucose complexes self-assemble in nanometric biofilms. J R Soc Interface 2012; 9:2450-6. [PMID: 22572031 DOI: 10.1098/rsif.2012.0217] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Hydrophobins are small proteins secreted by fungi, which self-assemble into amphipathic membranes at air-liquid or liquid-solid interfaces. The physical and chemical properties of some hydrophobins, both in solution and as a biofilm, are affected by poly or oligosaccharides. We have studied the interaction between glucose and the hydrophobin Vmh2 from Pleurotus ostreatus by spectroscopic ellipsometry (SE), atomic force microscopy (AFM) and water contact angle (WCA). We have found that Vmh2-glucose complexes forms a chemically stable biofilm, obtained by drop deposition on silicon, 1.6 nm thick and containing 35 per cent of glucose, quantified by SE. AFM highlighted the presence of nanometric rodlet-like aggregates (average height, width and length being equal to 3.6, 23.8 and 40 nm, respectively) on the biofilm surface, slightly different from those obtained in the absence of glucose (4.11, 23.9 and 64 nm). The wettability of a silicon surface, covered by the organic layer of Vmh2-glucose, strongly changed: WCA decreased from 90° down to 17°.
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Affiliation(s)
- Ilaria Rea
- Unit of Naples, Institute for Microelectronics and Microsystems, National Council of Research, Via Pietro Castellino 111, 80131 Naples, Italy.
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