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Murthy MHS, Jasbi P, Lowe W, Kumar L, Olaosebikan M, Roger L, Yang J, Lewinski N, Daniels N, Cowen L, Klein-Seetharaman J. Insulin signaling and pharmacology in humans and in corals. PeerJ 2024; 12:e16804. [PMID: 38313028 PMCID: PMC10838073 DOI: 10.7717/peerj.16804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/27/2023] [Indexed: 02/06/2024] Open
Abstract
Once thought to be a unique capability of the Langerhans islets in the pancreas of mammals, insulin (INS) signaling is now recognized as an evolutionarily ancient function going back to prokaryotes. INS is ubiquitously present not only in humans but also in unicellular eukaryotes, fungi, worms, and Drosophila. Remote homologue identification also supports the presence of INS and INS receptor in corals where the availability of glucose is largely dependent on the photosynthetic activity of the symbiotic algae. The cnidarian animal host of corals operates together with a 20,000-sized microbiome, in direct analogy to the human gut microbiome. In humans, aberrant INS signaling is the hallmark of metabolic disease, and is thought to play a major role in aging, and age-related diseases, such as Alzheimer's disease. We here would like to argue that a broader view of INS beyond its human homeostasis function may help us understand other organisms, and in turn, studying those non-model organisms may enable a novel view of the human INS signaling system. To this end, we here review INS signaling from a new angle, by drawing analogies between humans and corals at the molecular level.
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Affiliation(s)
| | - Paniz Jasbi
- School of Molecular Sciences, Arizona State University, Phoenix, AZ, USA
| | - Whitney Lowe
- Departments of Chemistry & Physics, Colorado School of Mines, Golden, CO, United States
| | - Lokender Kumar
- Departments of Chemistry & Physics, Colorado School of Mines, Golden, CO, United States
| | | | - Liza Roger
- School of Molecular Sciences, Arizona State University, Phoenix, AZ, USA
- School of Ocean Futures, Arizona State University, Tempe, AZ, United States of America
| | - Jinkyu Yang
- Department of Aeronautics & Astronautics, University of Washington, Seattle, WA, USA
| | - Nastassja Lewinski
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Noah Daniels
- Department of Computer Science, University of Rhode Island, Kingston, RI, USA
| | - Lenore Cowen
- Department of Computer Science, Tufts University, Medford, MA, USA
| | - Judith Klein-Seetharaman
- School of Molecular Sciences, Arizona State University, Phoenix, AZ, USA
- Departments of Chemistry & Physics, Colorado School of Mines, Golden, CO, United States
- College of Health Solutions, Arizona State University, Phoenix, AZ, United States
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2
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Elsayed A, Jaber N, Al-Remawi M, Abu-Salah K. From cell factories to patients: Stability challenges in biopharmaceuticals manufacturing and administration with mitigation strategies. Int J Pharm 2023; 645:123360. [PMID: 37657507 DOI: 10.1016/j.ijpharm.2023.123360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/19/2023] [Accepted: 08/30/2023] [Indexed: 09/03/2023]
Abstract
Active ingredients of biopharmaceuticals consist of a wide array of biomolecular structures, including those of enzymes, monoclonal antibodies, nucleic acids, and recombinant proteins. Recently, these molecules have dominated the pharmaceutical industry owing to their safety and efficacy. However, their manufacturing is hindered by high cost, inadequate batch-to-batch equivalence, inherent instability, and other quality issues. This article is an up-to-date review of the challenges encountered during different stages of biopharmaceutical production and mitigation of problems arising during their development, formulation, manufacturing, and administration. It is a broad overview discussion of stability issues encountered during product life cycle i.e., upstream processing (aggregation, solubility, host cell proteins, color change), downstream bioprocessing (aggregation, fragmentation), formulation, manufacturing, and delivery to patients.
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Affiliation(s)
- Amani Elsayed
- College of Pharmacy, Taif University, Taif 21944, Saudi Arabia
| | - Nisrein Jaber
- Faculty of Pharmacy, Al Zaytoonah University of Jordan, Amman 11733, Jordan
| | - Mayyas Al-Remawi
- Faculty of Pharmacy & Medical Sciences, University of Petra, Amman 1196, Jordan.
| | - Khalid Abu-Salah
- King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Department of Nanomedicine, Riyadh, Saudi Arabia
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3
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Evaluation of fluorescence-based viability stains in cells dissociated from scleractinian coral Pocillopora damicornis. Sci Rep 2022; 12:15297. [PMID: 36097278 PMCID: PMC9468155 DOI: 10.1038/s41598-022-19586-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 08/31/2022] [Indexed: 11/09/2022] Open
Abstract
The application of established cell viability assays such as the commonly used trypan blue staining method to coral cells is not straightforward due to different culture parameters and different cellular features specific to mammalian cells compared to marine invertebrates. Using Pocillopora damicornis as a model, we characterized the autofluorescence and tested different fluorescent dye pair combinations to identify alternative viability indicators. The cytotoxicity of different representative molecules, namely small organic molecules, proteins and nanoparticles (NP), was measured after 24 h of exposure using the fluorescent dye pair Hoechst 33342 and SYTOX orange. Our results show that this dye pair can be distinctly measured in the presence of fluorescent proteins plus chlorophyll. P. damicornis cells exposed for 24 h to Triton-X100, insulin or titanium dioxide (TiO2) NPs, respectively, at concentrations ranging from 0.5 to 100 µg/mL, revealed a LC50 of 0.46 µg/mL for Triton-X100, 6.21 µg/mL for TiO2 NPs and 33.9 µg/mL for insulin. This work presents the approach used to customize dye pairs for membrane integrity-based cell viability assays considering the species- and genotype-specific autofluorescence of scleractinian corals, namely: endogenous fluorescence characterization followed by the selection of dyes that do not overlap with endogenous signals.
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4
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Mori W, Kawakami R, Niko Y, Haruta T, Imamura T, Shiraki K, Zako T. Differences in interaction lead to the formation of different types of insulin amyloid. Sci Rep 2022; 12:8556. [PMID: 35595809 PMCID: PMC9123177 DOI: 10.1038/s41598-022-12212-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 05/04/2022] [Indexed: 11/25/2022] Open
Abstract
Insulin balls, localized insulin amyloids formed at the site of repeated insulin injections in patients with diabetes, cause poor glycemic control and cytotoxicity. Our previous study has shown that insulin forms two types of amyloids; toxic amyloid formed from the intact insulin ((i)-amyloid) and less-toxic amyloid formed in the presence of the reducing reagent TCEP ((r)-amyloid), suggesting insulin amyloid polymorphism. However, the differences in the formation mechanism and cytotoxicity expression are still unclear. Herein, we demonstrate that the liquid droplets, which are stabilized by electrostatic interactions, appear only in the process of toxic (i)-amyloid formation, but not in the less-toxic (r)-amyloid formation process. The effect of various additives such as arginine, 1,6-hexanediol, and salts on amyloid formation was also examined to investigate interactions that are important for amyloid formation. Our results indicate that the maturation processes of these two amyloids were significantly different, whereas the nucleation by hydrophobic interactions was similar. These results also suggest the difference in the formation mechanism of two different insulin amyloids is attributed to the difference in the intermolecular interactions and could be correlated with the cytotoxicity.
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Affiliation(s)
- Wakako Mori
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, Japan
| | - Ryosuke Kawakami
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Ehime, Japan
| | - Yosuke Niko
- Research and Education Faculty, Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Kochi University, Kochi, Japan
| | | | - Takeshi Imamura
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Ehime, Japan
| | - Kentaro Shiraki
- Faculty of Pure and Applied Sciences, University of Tsukuba, Ibaraki, Japan
| | - Tamotsu Zako
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, Japan.
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5
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Bera A, Sahoo S, Goswami K, Das SK, Ghosh P, De P. Modulating Insulin Aggregation with Charge Variable Cholic Acid-Derived Polymers. Biomacromolecules 2021; 22:4833-4845. [PMID: 34674527 DOI: 10.1021/acs.biomac.1c01107] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To understand the effect of cholic acid (CA)-based charge variable polymeric architectures on modulating the insulin aggregation process, herein, we have designed side-chain cholate-containing charge variable polymers. Three different types of copolymers from 2-(methacryloyloxy)ethyl cholate with anionic or cationic or neutral units have been synthesized by reversible addition-fragmentation chain transfer polymerization. The effects of these copolymers on the insulin fibrillation process was studied by multiple biophysical approaches including different types of spectroscopic and microscopic analyses. Interestingly, the CA-based cationic polymer (CP-10) was observed to inhibit the insulin fibrillation process in a dose-dependent manner and to act as an effective anti-amyloidogenic agent. Corresponding anionic (AP-10) and neutral (NP-10) copolymers with cholate pendants remained insignificant in controlling the aggregation process. Tyrosine fluorescence assays and Nile red fluorescence measurements demonstrate the role of hydrophobic interaction to explain the inhibitory potencies of CP-10. Furthermore, circular dichroism spectroscopic measurements were carried out to explore the secondary structural changes of insulin fibrils in the presence of cationic polymers with and without cholate moieties. Isothermal titration calorimetry measurements revealed the involvement of electrostatic polar interaction between the CA-based cationic polymer and insulin at different stages of fibrillation. Overall, this work demonstrates the efficacy of the CA-based cationic polymer in controlling the insulin aggregation process and provides a novel dimension to the studies on protein aggregation.
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Affiliation(s)
- Avisek Bera
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, India
| | - Subhasish Sahoo
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, India
| | - Kalyan Goswami
- Department of Biochemistry, AIIMS, Kalyani, Basantapur, NH-34 Connector, Kalyani 741245, Nadia, West Bengal, India
| | - Subir Kumar Das
- Department of Biochemistry, College of Medicine & JNM Hospital, WBUHS, Kalyani 741235, Nadia, West Bengal, India
| | - Pooja Ghosh
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, India
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, India
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6
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Blended polar/nonpolar peptide conjugate interferes with human insulin amyloid-mediated cytotoxicity. Bioorg Chem 2021; 111:104899. [PMID: 33882365 DOI: 10.1016/j.bioorg.2021.104899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 12/25/2022]
Abstract
Insulin, a peptide hormone and a key regulator of blood glucose level, is routinely administered to type-I diabetic patients to achieve the required glycemic control. Insulin aggregation and ensuing amyloidosis has been observed at repeated insulin injection sites and in injectable formulations. The latter occurs due to insulin agglomeration during shipping and storage. Such insulin amyloid leads to enhanced immunogenicity and allow potential attachment to cell membranes leading to cell permeability and apoptosis. Small molecule inhibitors provide useful interruption of this process and inhibit protein misfolding as well as amyloid formation. In this context, we report the propensity of a palmitoylated peptide conjugate to inhibit insulin aggregation and amyloid-mediated cytotoxicity, via designed interference with polypeptide interfacial interactions.
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7
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Hydroxytyrosol Inhibits Protein Oligomerization and Amyloid Aggregation in Human Insulin. Int J Mol Sci 2020; 21:ijms21134636. [PMID: 32629793 PMCID: PMC7370040 DOI: 10.3390/ijms21134636] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/22/2020] [Accepted: 06/29/2020] [Indexed: 01/02/2023] Open
Abstract
Hydroxytyrosol (HT), one of the main phenolic components of olive oil, has attracted considerable interest for its biological properties, including a remarkable antioxidant and anti-inflammatory power and, recently, for its ability to interfere with the amyloid aggregation underlying several human diseases. We report here a broad biophysical approach and cell biology techniques that allowed us to characterize the molecular mechanisms by which HT affects insulin amyloid aggregation and the related cytotoxicity. Our data show that HT is able to fully inhibit insulin amyloid aggregation and this property seems to be ascribed to the stabilization of the insulin monomeric state. Moreover, HT completely reverses the toxic effect produced by amyloid insulin aggregates in neuroblastoma cell lines by fully inhibiting the production of toxic amyloid species. These findings suggest that the beneficial effects of olive oil polyphenols, including HT, may arise from multifunctional activities and suggest possible a application of this natural compound in the prevention or treatment of amyloid-associated diseases.
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8
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Frost TS, Jiang L, Zohar Y. Pharmacokinetic Analysis of Epithelial/Endothelial Cell Barriers in Microfluidic Bilayer Devices with an Air-Liquid Interface. MICROMACHINES 2020; 11:mi11050536. [PMID: 32466113 PMCID: PMC7281310 DOI: 10.3390/mi11050536] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/20/2020] [Accepted: 05/20/2020] [Indexed: 12/23/2022]
Abstract
As the range of applications of organs-on-chips is broadening, the evaluation of aerosol-based therapies using a lung-on-a-chip model has become an attractive approach. Inhalation therapies are not only minimally invasive but also provide optimal pharmacokinetic conditions for drug absorption. As drug development evolves, it is likely that better screening through use of organs-on-chips can significantly save time and cost. In this work, bio-aerosols of various compounds including insulin were generated using a jet nebulizer. The aerosol flows were driven through microfluidic bilayer devices establishing an air–liquid interface to mimic the blood–air barrier in human small airways. The aerosol flow in the microfluidic devices has been characterized and adjusted to closely match physiological values. The permeability of several compounds, including paracellular and transcellular biomarkers, across epithelial/endothelial cell barriers was measured. Concentration–time plots were established in microfluidic devices with and without cells; the curves were then utilized to extract standard pharmacokinetic parameters such as the area under the curve, maximum concentration, and time to maximum concentration. The cell barrier significantly affected the measured pharmacokinetic parameters, as compound absorption through the barrier decreases with its increasing molecular size. Aerosolizing insulin can lead to the formation of fibrils, prior to its entry to the microfluidic device, with a substantially larger apparent molecular size effectively blocking its paracellular transport. The results demonstrate the advantage of using lung-on-a-chip for drug discovery with applications such as development of novel inhaled therapies.
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Affiliation(s)
- Timothy S. Frost
- Department of Biomedical Engineering, University of Arizona, Tucson, AZ 85721, USA;
- Correspondence:
| | - Linan Jiang
- Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ 85721, USA;
| | - Yitshak Zohar
- Department of Biomedical Engineering, University of Arizona, Tucson, AZ 85721, USA;
- Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ 85721, USA;
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9
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Unravelling the inhibitory and cytoprotective potential of diuretics towards amyloid fibrillation. Int J Biol Macromol 2020; 150:1258-1271. [DOI: 10.1016/j.ijbiomac.2019.10.137] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/26/2019] [Accepted: 10/14/2019] [Indexed: 12/28/2022]
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10
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AlBab ND, Hameed MK, Maresova A, Ahmady IM, Arooj M, Han C, Workie B, Chehimi M, Mohamed AA. Inhibition of amyloid fibrillation, enzymatic degradation and cytotoxicity of insulin at carboxyl tailored gold-aryl nanoparticles surface. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124279] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Iadanza MG, Jackson MP, Hewitt EW, Ranson NA, Radford SE. A new era for understanding amyloid structures and disease. Nat Rev Mol Cell Biol 2019; 19:755-773. [PMID: 30237470 DOI: 10.1038/s41580-018-0060-8] [Citation(s) in RCA: 569] [Impact Index Per Article: 113.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The aggregation of proteins into amyloid fibrils and their deposition into plaques and intracellular inclusions is the hallmark of amyloid disease. The accumulation and deposition of amyloid fibrils, collectively known as amyloidosis, is associated with many pathological conditions that can be associated with ageing, such as Alzheimer disease, Parkinson disease, type II diabetes and dialysis-related amyloidosis. However, elucidation of the atomic structure of amyloid fibrils formed from their intact protein precursors and how fibril formation relates to disease has remained elusive. Recent advances in structural biology techniques, including cryo-electron microscopy and solid-state NMR spectroscopy, have finally broken this impasse. The first near-atomic-resolution structures of amyloid fibrils formed in vitro, seeded from plaque material and analysed directly ex vivo are now available. The results reveal cross-β structures that are far more intricate than anticipated. Here, we describe these structures, highlighting their similarities and differences, and the basis for their toxicity. We discuss how amyloid structure may affect the ability of fibrils to spread to different sites in the cell and between organisms in a prion-like manner, along with their roles in disease. These molecular insights will aid in understanding the development and spread of amyloid diseases and are inspiring new strategies for therapeutic intervention.
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Affiliation(s)
- Matthew G Iadanza
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Matthew P Jackson
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Eric W Hewitt
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Neil A Ranson
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Sheena E Radford
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
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12
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Wang P, Wang X, Liu L, Zhao H, Qi W, He M. The Hydration Shell of Monomeric and Dimeric Insulin Studied by Terahertz Time-Domain Spectroscopy. Biophys J 2019; 117:533-541. [PMID: 31326108 DOI: 10.1016/j.bpj.2019.06.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 06/04/2019] [Accepted: 06/26/2019] [Indexed: 12/14/2022] Open
Abstract
Protein aggregation is believed to be a significant biological mechanism related to neurodegenerative disease, which makes the early-stage detection of aggregates a major concern. We demonstrated the use of terahertz (THz) time-domain spectroscopy to study protein-water interaction of monomeric and dimeric bovine insulin in aqueous samples. Regulated by changing pH and verified by size-exclusion chromatography and dynamic light scattering, we then measured their concentration-dependent changes in THz absorption between 0.5 and 3.0 THz and quantitatively deduced the extended hydration shell thickness by cubic distribution model and random distribution model. Under a random distribution assumption, the extended hydration thickness is 15.4 ± 0.4 Å for monomeric insulin and 17.5 ± 0.5 Å for dimeric insulin, with the hydration number of 6700 and 11,000, respectively. The hydration number of dimeric insulin is not twice but 1.64 times that of monomeric insulin, further supported by the ratio of solvent-accessible surface area. This "1.64-times" relation probably originates from the structural and conformational changes accompanied with dimerization. Combined with the investigations on insulin samples with different single amino acid mutations, residue B24 is believed to play an important role in the dimerization process. It is demonstrated that THz time-domain spectroscopy is a useful tool and has the sensitivity to provide the hydration information of different protein aggregates at an early stage.
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Affiliation(s)
- Pengfei Wang
- State Key Laboratory of Precision Measuring Technology and Instruments
| | | | - Liyuan Liu
- Key Laboratory of Optoelectronic Information Technology, Ministry of Education of China, Tianjin University, Tianjin, People's Republic of China
| | - Hongwei Zhao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering
| | - Mingxia He
- State Key Laboratory of Precision Measuring Technology and Instruments.
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13
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Investigating the effects of different natural molecules on the structure and oligomerization propensity of hen egg-white lysozyme. Int J Biol Macromol 2019; 134:189-201. [DOI: 10.1016/j.ijbiomac.2019.05.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 04/25/2019] [Accepted: 05/07/2019] [Indexed: 12/17/2022]
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14
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Iwaya K, Zako T, Fukunaga J, Sörgjerd KM, Ogata K, Kogure K, Kosano H, Noritake M, Maeda M, Ando Y, Katsura Y, Nagase T. Toxicity of insulin-derived amyloidosis: a case report. BMC Endocr Disord 2019; 19:61. [PMID: 31196059 PMCID: PMC6567432 DOI: 10.1186/s12902-019-0385-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 05/27/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Insulin-derived amyloidosis is a skin-related complication of insulin therapy that interferes with insulin therapy. Although toxicities of in vitro-formed insulin amyloid fibrils have been well studied, the toxicity of insulin-derived amyloidosis remains to be clarified. CASE PRESENTATION A 58-year-old man with type 2 diabetes mellitus underwent a lower limb amputation due to diabetic gangrene. Several antibiotics including minocycline were administered for infection and sepsis. A hard mass at the insulin injection sites in the lower abdomen was discovered by chance four months later. Although no abnormal findings in the surface skin of the mass were observed, necrotic tissue was seen around the mass when a biopsy was performed. Histological and toxicity studies were performed for this patient and four other patients with abdominal masses at insulin injection sites. Histological and immunohistochemical studies showed that the masses had typical characteristics of amyloid deposits in all cases, whereas necrotic findings were seen adjacent to the amyloid deposit only in the case presented. Toxicity studies indicated that the amyloid tissue from the present case had significant cell toxicity compared to the control skin tissue or the amyloid tissues from the other four cases. CONCLUSIONS This report showed that toxic insulin-derived amyloidosis can occur. In addition, this report suggested that toxic insulin-derived amyloidosis may cause necrosis in the surrounding tissue. Although the toxic amyloid deposit of insulin-derived amyloidosis was found in only one patient, no structural differences between toxic and non-toxic deposits were seen on histological and immunohistochemical studies.
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Affiliation(s)
- Keiichi Iwaya
- Department of Pathology, SASAKI Institute, Kyoundo Hospital, Tokyo, Japan
| | - Tamotsu Zako
- Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, Saitama, Japan
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, Japan
| | - Junta Fukunaga
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University, Ehime, Japan
| | | | - Kentaro Ogata
- Department of Pathology, Tachikawa Hospital, Tokyo, Japan
| | - Koichiro Kogure
- Department of Metabolism and Endocrinology, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuou, Ami, Ibaraki, 300-0395 Japan
| | - Hiroshi Kosano
- Faculty of Pharmaceutical Science, Teikyo University, Tokyo, Japan
| | - Masayuki Noritake
- Department of Metabolism and Endocrinology, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuou, Ami, Ibaraki, 300-0395 Japan
| | - Mizuo Maeda
- Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, Saitama, Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoshiya Katsura
- Department of Metabolism and Endocrinology, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuou, Ami, Ibaraki, 300-0395 Japan
| | - Terumasa Nagase
- Department of Metabolism and Endocrinology, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuou, Ami, Ibaraki, 300-0395 Japan
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15
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Human islet amyloid polypeptide (hIAPP) aggregation in type 2 diabetes: Correlation between intrinsic physicochemical properties of hIAPP aggregates and their cytotoxicity. Int J Biol Macromol 2019; 136:57-65. [PMID: 31195047 DOI: 10.1016/j.ijbiomac.2019.06.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/09/2019] [Accepted: 06/09/2019] [Indexed: 02/07/2023]
Abstract
A large number of pathological diseases are known now to be associated with the misfolding and the aberrant oligomerization and deposition of peptides and proteins into various aggregates. One of these peptides is islet amyloid polypeptide (IAPP), which is responsible for amyloid formation in type 2 diabetes. The mechanism of IAPP amyloid formation in vivo and in vitro is not well understood and the factors behind the peptide aggregates toxicity are not fully defined. Therefore, the precise nature of toxic agents still remains to be elucidated. In this context, first we used a complementary biophysical approach to undertake a systematic study of the hIAPP aggregation process with focus on the lag phase, followed by the study of their degrees of toxicity when added to the extracellular medium of pancreatic cells. The structural properties of hIAPP aggregates are characterized by evaluating their size with DLS, their surface hydrophobicity with ANS, and the interactions between monomers through the intrinsic fluorescence of aromatic residues or by the quenching of these residues mainly the tyrosine in position 37. Our results indicate that despite the method used to study hIAPP aggregation, the obtained curve is easily well fitted in a sigmoidal curve but with some differences. In fact, the analysis of the kinetic parameters gives different information about the hIAPP aggregation process such as lag time and growth rate. Moreover, a high surface hydrophobicity and small size of the aggregates, mainly for the species formed during the lag time, shows strong correlation with the cytotoxicity. These findings provide new insights into the structural changes during hIAPP aggregation and are consistent with a model in which the exposure of hydrophobic surfaces and the small size of aggregates formed during the early stage of the process are crucial for their cytotoxicity.
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16
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Regulation of heteronuclear Pt–Ru complexes on the fibril formation and cytotoxicity of human islet amyloid polypeptide. J Inorg Biochem 2018; 189:7-16. [DOI: 10.1016/j.jinorgbio.2018.08.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 08/11/2018] [Accepted: 08/15/2018] [Indexed: 12/17/2022]
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17
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Quinolinic Acid Amyloid-like Fibrillar Assemblies Seed α-Synuclein Aggregation. J Mol Biol 2018; 430:3847-3862. [PMID: 30098337 DOI: 10.1016/j.jmb.2018.08.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 07/17/2018] [Accepted: 08/01/2018] [Indexed: 01/08/2023]
Abstract
Quinolinic acid (QA), a downstream neurometabolite in the kynurenine pathway, the biosynthetic pathway of tryptophan, is associated with neurodegenerative diseases pathology. Mutations in genes encoding kynurenine pathway enzymes, which control the level of QA production, are linked with elevated risk of developing Parkinson's disease. Recent findings have revealed the accumulation and deposition of QA in post-mortem samples, as well as in cellular models of Alzheimer's disease and related disorders. Furthermore, intrastriatal inoculation of mice with QA results in increased levels of phosphorylated α-synuclein and neurodegenerative pathological and behavioral characteristics. However, the cellular and molecular mechanisms underlying the involvement of QA accumulation in protein aggregation and neurodegeneration remain elusive. We recently established that self-assembled ordered structures are formed by various metabolites and hypothesized that these "metabolite amyloids" may seed amyloidogenic proteins. Here we demonstrate the formation of QA amyloid-like fibrillar assemblies and seeding of α-synuclein aggregation by these nanostructures both in vitro and in cell culture. Notably, α-synuclein aggregation kinetics was accelerated by an order of magnitude. Additional amyloid-like properties of QA assemblies were demonstrated using thioflavin T assay, powder X-ray diffraction and cell apoptosis analysis. Moreover, fluorescently labeled QA assemblies were internalized by neuronal cells and co-localized with α-synuclein aggregates. In addition, we observed cell-to-cell propagation of fluorescently labeled QA assemblies in a co-culture of treated and untreated cells. Our findings suggest that excess QA levels, due to mutations in the kynurenine pathway, for example, may lead to the formation of metabolite assemblies that seed α-synuclein aggregation, resulting in neuronal toxicity and induction of Parkinson's disease.
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Siddiqi MK, Alam P, Iqbal T, Majid N, Malik S, Nusrat S, Alam A, Ajmal MR, Uversky VN, Khan RH. Elucidating the Inhibitory Potential of Designed Peptides Against Amyloid Fibrillation and Amyloid Associated Cytotoxicity. Front Chem 2018; 6:311. [PMID: 30123793 PMCID: PMC6085999 DOI: 10.3389/fchem.2018.00311] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 07/09/2018] [Indexed: 01/09/2023] Open
Abstract
Inhibition of fibrillation process and disaggregation of mature fibrils using small peptide are the promising remedial strategies to combat neurodegenerative diseases. However, designing peptide-based drugs to target β-sheet-rich amyloid has been a major challenge. The current work describes, for the first time, the amyloid inhibitory potential of the two short peptides (selected on the basis of predisposition of their amino acid residues toward β-sheet formation) using combination of biophysical, imaging methods, and docking approaches. Results showed that peptides employed different mechanisms to inhibit the amyloid fibrillation. Furthermore, they were also effective in blocking the amyloid fibrillation pathway. In contrary to the insulin fibrillar mesh, significantly less fibrillar species appeared in the presence of peptides, as confirmed by transmission electron microscopy. Circular dichroism analysis indicated that although peptides did not stabilize the native state of insulin, they inhibited amyloid aggregation by reducing the formation of β-sheet rich structures. Hemolytic assay revealed the non-hemolytic nature of the species formed when insulin was co-incubated with the peptides. Therefore, despite the inherent potential to form β-sheet structure, these peptides inhibited the amyloid formation and potentially can be used as therapeutics for the treatment of amyloid-related diseases.
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Affiliation(s)
- Mohammad K Siddiqi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Tabish Iqbal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Nabeela Majid
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Sadia Malik
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Aftab Alam
- Center for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
| | - Mohd R Ajmal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Vladimir N Uversky
- Protein Research Group, Institute for Biological Instrumentation of the Russian Academy of Sciences, Moscow, Russia.,Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Rizwan H Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
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Differential inhibition of metabolite amyloid formation by generic fibrillation-modifying polyphenols. Commun Chem 2018. [DOI: 10.1038/s42004-018-0025-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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20
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Chouchane K, Pignot-Paintrand I, Bruckert F, Weidenhaupt M. Visible light-induced insulin aggregation on surfaces via photoexcitation of bound thioflavin T. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018. [DOI: 10.1016/j.jphotobiol.2018.02.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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21
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Siddiqi MK, Alam P, Chaturvedi SK, Khan MV, Nusrat S, Malik S, Khan RH. Capreomycin inhibits the initiation of amyloid fibrillation and suppresses amyloid induced cell toxicity. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2018; 1866:549-557. [PMID: 29496560 DOI: 10.1016/j.bbapap.2018.02.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 02/11/2018] [Accepted: 02/23/2018] [Indexed: 12/20/2022]
Abstract
Protein aggregation and amyloid fibrillation are responsible for several serious pathological conditions (like type II diabetes, Alzheimer's and Parkinson's diseases etc.) and protein drugs ineffectiveness. Therefore, a molecule that can inhibit the amyloid fibrillation and potentially clear amyloid fibrils is of great therapeutic value. In this manuscript, we investigated the antiamyloidogenic, fibril disaggregating, as well as cell protective effect of an anti-tuberculosis drug, Capreomycin (CN). Aggregation kinetics data, as monitored by ThT fluorescence, inferred that CN retards the insulin amyloid fibrillation by primarily targeting the fibril elongation step with little effect on lag time. Increasing the dose of CN boosted its inhibitory potency. Strikingly, CN arrested the growth of fibrils when added during the elongation phase, and disaggregated mature insulin fibrils. Our Circular Dichroism (CD) results showed that, although CN is not able to maintain the alpha helical structure of protein during fibrillation, reduces the formation of beta sheet rich structure. Furthermore, Dynamic Light Scattering (DLS) and Transmission Electronic Microscopy (TEM) analysis confirmed that CN treated samples exhibited different size distribution and morphology, respectively. In addition, molecular docking results revealed that CN interacts with insulin through hydrophobic interactions as well as hydrogen bonding, and the Hemolytic assay confirmed the non-hemolytic activity of CN on human RBCs. For future research, this study may assist in the rational designing of molecules against amyloid formation.
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Affiliation(s)
| | - Parvez Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Sumit Kumar Chaturvedi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Mohsin Vahid Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Saima Nusrat
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Sadia Malik
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India.
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Shaham-Niv S, Rehak P, Zaguri D, Kolusheva S, Král P, Gazit E. Metabolite amyloid-like fibrils interact with model membranes. Chem Commun (Camb) 2018; 54:4561-4564. [DOI: 10.1039/c8cc01423j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Metabolite assemblies interaction with membranes further extend the “amyloid hypothesis” to include small metabolites which serve as amyloidogenic building blocks.
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Affiliation(s)
- Shira Shaham-Niv
- Department of Molecular Microbiology and Biotechnology
- George S. Wise Faculty of Life Sciences
- Tel Aviv University
- Tel Aviv 6997801
- Israel
| | - Pavel Rehak
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
| | - Dor Zaguri
- Department of Molecular Microbiology and Biotechnology
- George S. Wise Faculty of Life Sciences
- Tel Aviv University
- Tel Aviv 6997801
- Israel
| | - Sofiya Kolusheva
- Ilse Katz Institute for Nanotechnology
- Ben Gurion University of the Negev
- Beer Sheva 84105
- Israel
| | - Petr Král
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
- Department of Physics
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology
- George S. Wise Faculty of Life Sciences
- Tel Aviv University
- Tel Aviv 6997801
- Israel
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Shaham-Niv S, Rehak P, Vuković L, Adler-Abramovich L, Král P, Gazit E. Formation of Apoptosis-Inducing Amyloid Fibrils by Tryptophan. Isr J Chem 2016. [DOI: 10.1002/ijch.201600076] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shira Shaham-Niv
- Department of Molecular Microbiology and Biotechnology; George S. Wise Faculty of Life Sciences; Tel Aviv University; Tel Aviv 69978 Israel
| | - Pavel Rehak
- Department of Chemistry; University of Illinois at Chicago; Chicago USA
| | - Lela Vuković
- Department of Chemistry; University of Texas at El Paso; El Paso USA
| | - Lihi Adler-Abramovich
- Department of Oral Biology; The Goldschleger School of Dental Medicine; Tel Aviv University; Tel Aviv 69978 Israel
| | - Petr Král
- Department of Chemistry; University of Illinois at Chicago; Chicago USA
- Department of Physics; University of Illinois at Chicago; Chicago USA
- Department of Biopharmaceutical Sciences; University of Illinois at Chicago; Chicago USA
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology; George S. Wise Faculty of Life Sciences; Tel Aviv University; Tel Aviv 69978 Israel
- Department of Materials Science and Engineering; Iby and Aladar Fleischman Faculty of Engineering; Tel Aviv University; Tel Aviv 69978 Israel
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24
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Saha S, Deep S. Glycerol inhibits the primary pathways and transforms the secondary pathway of insulin aggregation. Phys Chem Chem Phys 2016; 18:18934-48. [PMID: 27353748 DOI: 10.1039/c6cp02906j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Aggregation of insulin initiated from the monomeric form proceeds via the secondary pathway of fragmentation. It was interesting to find that glycerol had the potential to transform the secondary pathway of aggregation from fragmentation to heterogeneous nucleation in a concentration dependent manner. Such a change in the secondary pathway was manifested by a change in the fibrillar morphology, wherein, longer fibrils were formed in the presence of glycerol. Glycerol could inhibit all the major steps of insulin aggregation. The analysis of the kinetic traces suggested that the inhibitory effect was most significant on the primary pathways, although secondary nucleation and elongation were also inhibited. In fact, at higher glycerol concentrations, the primary pathways were inhibited to such an extent that the majority of the aggregation was now driven by the secondary pathways. Our data suggest that glycerol binds to the early intermediates in the insulin aggregation pathway, and inhibits them from forming the aggregation competent species capable of elongation. As higher order species are formed in the aggregation pathway, the relative stabilization rendered by glycerol diminishes due to the exclusion of glycerol from the interface.
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Affiliation(s)
- Shivnetra Saha
- Department of Chemistry, Indian Institute of Technology, Hauz-Khas, New Delhi, Delhi, India.
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25
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Yoshihara H, Saito J, Tanabe A, Amada T, Asakura T, Kitagawa K, Asada S. Characterization of Novel Insulin Fibrils That Show Strong Cytotoxicity Under Physiological pH. J Pharm Sci 2016; 105:1419-26. [DOI: 10.1016/j.xphs.2016.01.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 01/29/2016] [Accepted: 01/29/2016] [Indexed: 01/29/2023]
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26
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Dissecting ion-specific from electrostatic salt effects on amyloid fibrillation: A case study of insulin. Biointerphases 2016; 11:019008. [DOI: 10.1116/1.4941008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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27
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Chen CH, Yao T, Zhang Q, He YM, Xu LH, Zheng M, Zhou GR, Zhang Y, Yang HJ, Zhou P. Influence of trehalose on human islet amyloid polypeptide fibrillation and aggregation. RSC Adv 2016. [DOI: 10.1039/c5ra27689f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A lower dose of trehalose inhibits or delays, while higher dose of trehalose promotes the hIAPP fibrillation and aggregation.
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28
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Mishra NK, Krishna Deepak RNV, Sankararamakrishnan R, Verma S. Controlling in Vitro Insulin Amyloidosis with Stable Peptide Conjugates: A Combined Experimental and Computational Study. J Phys Chem B 2015; 119:15395-406. [DOI: 10.1021/acs.jpcb.5b08215] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Narendra Kumar Mishra
- Department of Chemistry, DST Thematic
Unit of Excellence on Soft
Nanofabrication and ‡Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016 Uttar Pradesh, India
| | - R. N. V. Krishna Deepak
- Department of Chemistry, DST Thematic
Unit of Excellence on Soft
Nanofabrication and ‡Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016 Uttar Pradesh, India
| | - Ramasubbu Sankararamakrishnan
- Department of Chemistry, DST Thematic
Unit of Excellence on Soft
Nanofabrication and ‡Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016 Uttar Pradesh, India
| | - Sandeep Verma
- Department of Chemistry, DST Thematic
Unit of Excellence on Soft
Nanofabrication and ‡Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016 Uttar Pradesh, India
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29
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Chaari A, Fahy C, Chevillot-Biraud A, Rholam M. Insights into Kinetics of Agitation-Induced Aggregation of Hen Lysozyme under Heat and Acidic Conditions from Various Spectroscopic Methods. PLoS One 2015; 10:e0142095. [PMID: 26571264 PMCID: PMC4646502 DOI: 10.1371/journal.pone.0142095] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 10/16/2015] [Indexed: 01/28/2023] Open
Abstract
Protein misfolding and amyloid formation are an underlying pathological hallmark in a number of prevalent diseases of protein aggregation ranging from Alzheimer’s and Parkinson’s diseases to systemic lysozyme amyloidosis. In this context, we have used complementary spectroscopic methods to undertake a systematic study of the self-assembly of hen egg-white lysozyme under agitation during a prolonged heating in acidic pH. The kinetics of lysozyme aggregation, monitored by Thioflavin T fluorescence, dynamic light scattering and the quenching of tryptophan fluorescence by acrylamide, is described by a sigmoid curve typical of a nucleation-dependent polymerization process. Nevertheless, we observe significant differences between the values deduced for the kinetic parameters (lag time and aggregation rate). The fibrillation process of lysozyme, as assessed by the attenuated total reflection-Fourier transform infrared spectroscopy, is accompanied by an increase in the β-sheet conformation at the expense of the α-helical conformation but the time-dependent variation of the content of these secondary structures does not evolve as a gradual transition. Moreover, the tryptophan fluorescence-monitored kinetics of lysozyme aggregation is described by three phases in which the temporal decrease of the tryptophan fluorescence quantum yield is of quasilinear nature. Finally, the generated lysozyme fibrils exhibit a typical amyloid morphology with various lengths (observed by atomic force microscopy) and contain exclusively the full-length protein (analyzed by highly performance liquid chromatography). Compared to the data obtained by other groups for the formation of lysozyme fibrils in acidic pH without agitation, this work provides new insights into the structural changes (local, secondary, oligomeric/fibrillar structures) undergone by the lysozyme during the agitation-induced formation of fibrils.
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Affiliation(s)
- Ali Chaari
- ITODYS, UMR CNRS 7086, Univ. Paris Diderot, Sorbonne Paris Cité, 75205, Paris, France
- Laboratoire de Génétique et Biologie Cellulaire, Université de Versailles Saint-Quentin-en-Yvelines, 78035, Versailles, France
| | - Christine Fahy
- ITODYS, UMR CNRS 7086, Univ. Paris Diderot, Sorbonne Paris Cité, 75205, Paris, France
| | | | - Mohamed Rholam
- ITODYS, UMR CNRS 7086, Univ. Paris Diderot, Sorbonne Paris Cité, 75205, Paris, France
- * E-mail:
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30
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Shaham-Niv S, Adler-Abramovich L, Schnaider L, Gazit E. Extension of the generic amyloid hypothesis to nonproteinaceous metabolite assemblies. SCIENCE ADVANCES 2015; 1:e1500137. [PMID: 26601224 PMCID: PMC4643800 DOI: 10.1126/sciadv.1500137] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 06/25/2015] [Indexed: 05/26/2023]
Abstract
The accumulation of amyloid fibrils is the hallmark of several major human diseases. Although the formation of these supramolecular entities has previously been associated with proteins and peptides, it was later demonstrated that even phenylalanine, a single amino acid, can form fibrils that have amyloid-like biophysical, biochemical, and cytotoxic properties. Moreover, the generation of antibodies against these assemblies in phenylketonuria patients and the correlating mice model suggested a pathological role for the assemblies. We determine that several other metabolites that accumulate in metabolic disorders form ordered amyloid-like ultrastructures, which induce apoptotic cell death, as observed for amyloid structures. The formation of amyloid-like assemblies by metabolites implies a general phenomenon of amyloid formation, not limited to proteins and peptides, and offers a new paradigm for metabolic diseases.
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Affiliation(s)
- Shira Shaham-Niv
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Lihi Adler-Abramovich
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Tel Aviv Univeristy, Tel Aviv 69978, Israel
| | - Lee Schnaider
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
- Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
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31
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Jakhria T, Hellewell AL, Porter MY, Jackson MP, Tipping KW, Xue WF, Radford SE, Hewitt EW. β2-microglobulin amyloid fibrils are nanoparticles that disrupt lysosomal membrane protein trafficking and inhibit protein degradation by lysosomes. J Biol Chem 2014; 289:35781-94. [PMID: 25378395 PMCID: PMC4276847 DOI: 10.1074/jbc.m114.586222] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Fragmentation of amyloid fibrils produces fibrils that are reduced in length but have an otherwise unchanged molecular architecture. The resultant nanoscale fibril particles inhibit the cellular reduction of the tetrazolium dye 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), a substrate commonly used to measure cell viability, to a greater extent than unfragmented fibrils. Here we show that the internalization of β2-microglobulin (β2m) amyloid fibrils is dependent on fibril length, with fragmented fibrils being more efficiently internalized by cells. Correspondingly, inhibiting the internalization of fragmented β2m fibrils rescued cellular MTT reduction. Incubation of cells with fragmented β2m fibrils did not, however, cause cell death. Instead, fragmented β2m fibrils accumulate in lysosomes, alter the trafficking of lysosomal membrane proteins, and inhibit the degradation of a model protein substrate by lysosomes. These findings suggest that nanoscale fibrils formed early during amyloid assembly reactions or by the fragmentation of longer fibrils could play a role in amyloid disease by disrupting protein degradation by lysosomes and trafficking in the endolysosomal pathway.
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Affiliation(s)
- Toral Jakhria
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Andrew L Hellewell
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Morwenna Y Porter
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Matthew P Jackson
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Kevin W Tipping
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Wei-Feng Xue
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Sheena E Radford
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Eric W Hewitt
- From the School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
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32
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Anti-fibrillogenic properties of phthalocyanines: Effect of the out-of-plane ligands. Bioorg Med Chem 2014; 22:6918-23. [DOI: 10.1016/j.bmc.2014.10.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/10/2014] [Accepted: 10/15/2014] [Indexed: 11/21/2022]
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Zhang M, Zhao J, Zheng J. Molecular understanding of a potential functional link between antimicrobial and amyloid peptides. SOFT MATTER 2014; 10:7425-7451. [PMID: 25105988 DOI: 10.1039/c4sm00907j] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Antimicrobial and amyloid peptides do not share common sequences, typical secondary structures, or normal biological activity but both the classes of peptides exhibit membrane-disruption ability to induce cell toxicity. Different membrane-disruption mechanisms have been proposed for antimicrobial and amyloid peptides, individually, some of which are not exclusive to either peptide type, implying that certain common principles may govern the folding and functions of different cytolytic peptides and associated membrane disruption mechanisms. Particularly, some antimicrobial and amyloid peptides have been identified to have dual complementary amyloid and antimicrobial properties, suggesting a potential functional link between amyloid and antimicrobial peptides. Given that some similar structural and membrane-disruption characteristics exist between the two classes of peptides, this review summarizes major findings, recent advances, and future challenges related to antimicrobial and amyloid peptides and strives to illustrate the similarities, differences, and relationships in the sequences, structures, and membrane interaction modes between amyloid and antimicrobial peptides, with a special focus on direct interactions of the peptides with the membranes. We hope that this review will stimulate further research at the interface of antimicrobial and amyloid peptides - which has been studied less intensively than either type of peptides - to decipher a possible link between both amyloid pathology and antimicrobial activity, which can guide drug design and peptide engineering to influence peptide-membrane interactions important in human health and diseases.
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Affiliation(s)
- Mingzhen Zhang
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325, USA.
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34
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Amini R, Yazdanparast R, Ghaffari SH. Apigenin modulates the expression levels of pro-inflammatory mediators to reduce the human insulin amyloid-induced oxidant damages in SK-N-MC cells. Hum Exp Toxicol 2014; 34:642-53. [PMID: 25304968 DOI: 10.1177/0960327114554046] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Amyloid depositions of proteins play crucial roles in a wide variety of degenerative disorders called amyloidosis. Although the exact mechanisms involved in amyloid-mediated cytotoxicity remain unknown, increased formation of reactive oxygen species (ROS) and nitrogen species and overproduction of pro-inflammatory cytokines are believed to play key roles in the process. In that regard, we investigated the effect of apigenin, a common dietary flavonoid with high antioxidant and anti-inflammatory properties on potential factors involved in cytotoxicity of human insulin amyloids. Pretreatment of SK-N-MC neuroblastoma cells with apigenin increased cell viability and reduced the apoptosis induced by insulin fibrils. In addition, apigenin attenuated insulin fibril-induced ROS production and lipid peroxidation. Our result also demonstrated that pretreatment of the fibril-affected cells with apigenin caused an increase in catalase activity and the intracellular glutathione content along with reduction in nitric oxide production and nuclear factor κB, tumor necrosis factor α, and interleukin 6 gene expression based on real-time polymerase chain reaction evaluation. In accordance with these results, apigenin could be a promising candidate in the design of natural-based drugs for treatment or prevention of amyloid-related disorders.
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Affiliation(s)
- R Amini
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - R Yazdanparast
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - S H Ghaffari
- Hematology, Oncology and Bone Marrow Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Abstract
Protein misfolding and aggregation are associated with more than twenty diseases, such as neurodegenerative diseases and metabolic diseases. The amyloid oligomers and fibrils may induce cell membrane disruption and lead to cell apoptosis. A great number of studies have focused on discovery of amyloid inhibitors which may prevent or treat amyloidosis diseases. Polyphenols have been extensively studied as a class of amyloid inhibitors, with several polyphenols under clinical trials as anti-neurodegenerative drugs. As oxidative intermediates of natural polyphenols, quinones widely exist in medicinal plants or food. In this study, we used insulin as an amyloid model to test the anti-amyloid effects of four simple quinones and four natural anthraquinone derivatives from rhubarb, a traditional herbal medicine used for treating Alzheimer's disease. Our results demonstrated that all eight quinones show inhibitory effects to different extent on insulin oligomerization, especially for 1,4-benzoquinone and 1,4-naphthoquinone. Significantly attenuated oligomerization, reduced amount of amyloid fibrils and reduced hemolysis levels were found after quinones treatments, indicating quinones may inhibit insulin from forming toxic oligomeric species. The results suggest a potential action of native anthraquinone derivatives in preventing protein misfolding diseases, the quinone skeleton may thus be further explored for designing effective anti-amyloidosis compounds.
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Kachooei E, Moosavi-Movahedi AA, Khodagholi F, Mozaffarian F, Sadeghi P, Hadi-Alijanvand H, Ghasemi A, Saboury AA, Farhadi M, Sheibani N. Inhibition study on insulin fibrillation and cytotoxicity by paclitaxel. J Biochem 2014; 155:361-73. [PMID: 24535601 DOI: 10.1093/jb/mvu012] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Alzheimer, a neurodegenerative disease, and a large variety of pathologic conditions are associated with a form of protein aggregation known as amyloid fibrils. Since fibrils and prefibrillar intermediates are cytotoxic, numerous attempts have been made to inhibit fibrillation process as a therapeutic strategy. Peptides, surfactants and aromatic small molecules have been used as fibrillation inhibitors. Here we studied the effects of paclitaxel, a polyphenol with a high tendency for interaction with proteins, on fibrillation of insulin as a model protein. The effects of paclitaxel on insulin fibrillation were determined by Thioflavin T fluorescence, Congo red absorbance, circular dichroism and atomic force microscopy. These studies indicated that paclitaxel considerably hindered nucleation, and therefore, fibrillation of insulin in a dose-dependant manner. The isothermal titration calorimetry studies showed that the interaction between paclitaxel and insulin was spontaneous. In addition, the van der Waal's interactions and hydrogen bonds were prominent forces contributing to this interaction. Computational results using molecular dynamic simulations and docking studies revealed that paclitaxel diminished the polarity of insulin dimer and electrostatic interactions by increasing the hydrophobicity of its dimer state. Furthermore, paclitaxel reduced disrupting effects of insulin fibrils on PC12 cell's neurite outgrowth and complexity, and enhanced their survival.
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Affiliation(s)
- Ehsan Kachooei
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Ali Akbar Moosavi-Movahedi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USAInstitute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Fariba Khodagholi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Faroogh Mozaffarian
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Payam Sadeghi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Hamid Hadi-Alijanvand
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Atiyeh Ghasemi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USAInstitute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Mohammad Farhadi
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Nader Sheibani
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran; Center of Excellence in Biothermodynamics, University of Tehran, Tehran, Iran; NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biological Sciences, Institute for Advanced Studies in Basic Sciences, Department of Biological Sciences, Zanjan, Iran; ENT-HNS Research Center, IUMS, Tehran, Iran; and Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
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37
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Javid N, Roy S, Zelzer M, Yang Z, Sefcik J, Ulijn RV. Cooperative self-assembly of peptide gelators and proteins. Biomacromolecules 2013; 14:4368-76. [PMID: 24256076 PMCID: PMC4374667 DOI: 10.1021/bm401319c] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 11/06/2013] [Indexed: 01/10/2023]
Abstract
Molecular self-assembly provides a versatile route for the production of nanoscale materials for medical and technological applications. Herein, we demonstrate that the cooperative self-assembly of amphiphilic small molecules and proteins can have drastic effects on supramolecular nanostructuring of resulting materials. We report that mesoscale, fractal-like clusters of proteins form at concentrations that are orders of magnitude lower compared to those usually associated with molecular crowding at room temperature. These protein clusters have pronounced effects on the molecular self-assembly of aromatic peptide amphiphiles (fluorenylmethoxycarbonyl- dipeptides), resulting in a reversal of chiral organization and enhanced order through templating and binding. Moreover, the morphological and mechanical properties of the resultant nanostructured gels can be controlled by the cooperative self-assembly of peptides and protein fractal clusters, having implications for biomedical applications where proteins and peptides are both present. In addition, fundamental insights into cooperative interplay of molecular interactions and confinement by clusters of chiral macromolecules is relevant to gaining understanding of the molecular mechanisms of relevance to the origin of life and development of synthetic mimics of living systems.
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Affiliation(s)
- Nadeem Javid
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, U.K.
| | - Sangita Roy
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, U.K.
| | - Mischa Zelzer
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, U.K.
| | - Zhimou Yang
- State
Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jan Sefcik
- Department
of Chemical and Process Engineering, University
of Strathclyde, Glasgow, U.K.
| | - Rein V. Ulijn
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, U.K.
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38
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Mishra NK, Joshi KB, Verma S. Inhibition of human and bovine insulin fibril formation by designed peptide conjugates. Mol Pharm 2013; 10:3903-12. [PMID: 24070716 DOI: 10.1021/mp400364w] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The aggregation of insulin, to afford amyloidogenic fibers, is a well-studied phenomenon, which has interesting biological ramifications and pharmaceutical implications. These fibers have been ascribed an intriguing role in certain disease states and stability of pharmaceutical formulations of this hormone. The present study describes the design and inhibitory effects of novel peptide conjugates toward fibrillation of insulin as investigated by thioflavin T assay, circular dichroism (CD), and atomic force microscopy (AFM). Possible interaction of insulin with peptide-based fibrillation inhibitors is also probed by other solution phase studies, which reveal an important role of aromatic π-π interactions in the inhibition process. CD studies suggest that a freshly prepared solution of insulin, rich in α-helices, transforms into a β-sheet structure upon aggregation, which gets perturbed in the presence of synthesized inhibitors. Therefore, these newly designed peptides could serve as potential leads as inhibitors of insulin aggregation.
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Affiliation(s)
- Narendra Kumar Mishra
- Department of Chemistry, DST Thematic Unit of Excellence on Soft Nanofabrication, Indian Institute of Technology Kanpur , Kanpur-208016 (UP), India
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39
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Li JJ, Yip CM. Super-resolved FT-IR spectroscopy: Strategies, challenges, and opportunities for membrane biophysics. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2272-82. [PMID: 23500349 DOI: 10.1016/j.bbamem.2013.02.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 02/25/2013] [Indexed: 01/16/2023]
Abstract
Direct correlation of molecular conformation with local structure is critical to studies of protein- and peptide-membrane interactions, particularly in the context of membrane-facilitated aggregation, and disruption or disordering. Infrared spectroscopy has long been a mainstay for determining molecular conformation, following folding dynamics, and characterizing reactions. While tremendous advances have been made in improving the spectral and temporal resolution of infrared spectroscopy, it has only been with the introduction of scanned-probe techniques that exploit the raster-scanning tip as either a source, scattering tool, or measurement probe that researchers have been able to obtain sub-diffraction limit IR spectra. This review will examine the history of correlated scanned-probe IR spectroscopies, from their inception to their use in studies of molecular aggregates, membrane domains, and cellular structures. The challenges and opportunities that these platforms present for examining dynamic phenomena will be discussed. This article is part of a Special Issue entitled: FTIR in membrane proteins and peptide studies.
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Affiliation(s)
- Jessica J Li
- Department of Chemical Engineering and Applied Chemistry, Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Canada M5S 3E1
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40
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Mao J, Chen MS, Chen YX, Zhao YF, Li YM. Short Peptide Segment and Insulin Co-Assembly Forms Cytotoxic Oligomers. Int J Pept Res Ther 2012. [DOI: 10.1007/s10989-012-9329-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Yousefi R, Jalili S, Alavi P, Moosavi-Movahedi AA. The enhancing effect of homocysteine thiolactone on insulin fibrillation and cytotoxicity of insulin fibril. Int J Biol Macromol 2012; 51:291-8. [DOI: 10.1016/j.ijbiomac.2012.05.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Revised: 05/14/2012] [Accepted: 05/15/2012] [Indexed: 10/28/2022]
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42
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Oligomeric forms of insulin amyloid aggregation disrupt outgrowth and complexity of neuron-like PC12 cells. PLoS One 2012; 7:e41344. [PMID: 22848469 PMCID: PMC3407202 DOI: 10.1371/journal.pone.0041344] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Accepted: 06/20/2012] [Indexed: 11/19/2022] Open
Abstract
Formation of protein amyloid fibrils consists of a series of intermediates including oligomeric aggregates, proto-fibrillar structures, and finally mature fibrils. Recent studies show higher toxicity for oligomeric and proto-fibrillar intermediates of protein relative to their mature fibrils. Here the kinetic of the insulin amyloid fibrillation was evaluated using a variety of techniques including ThT fluorescence, Congo red absorbance, circular dichroism, and atomic force microscopy (AFM). The solution surface tension changes were attributed to hydrophobic changes in insulin structure and were detected by Du Noüy Ring method. Determination of the surface tension of insulin oligomeric, proto-fibrillar and fibrillar forms indicated that the hydrophobicity of solution is enhanced by the formation of the oligomeric forms of insulin compared to other forms. In order to investigate the toxicity of the different forms of insulin we monitored morphological alterations of the differentiated neuron-like PC12 cells following incubation with native, oligomeric aggregates, proto-fibrillar, and fibrillar forms of insulin. The cell body area, average neurite length, neurite width, number of primary neurites, and percent of bipolar cells and node/primary neurite ratios were used to assess the growth and complexity of PC12 cells exposed to different forms of insulin. We observed that the oligomeric form of insulin impaired the growth and complexity of PC12 cells compared to other forms. Together our data suggest that the lower surface tension of oligomers and their perturbation affects the morphology of PC12 cells, mainly due to their enhanced hydrophobicity and detergent-like structures.
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43
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Inhibitory effects of arginine on the aggregation of bovine insulin. JOURNAL OF BIOPHYSICS 2012; 2012:434289. [PMID: 22848214 PMCID: PMC3400368 DOI: 10.1155/2012/434289] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 05/28/2012] [Accepted: 06/05/2012] [Indexed: 11/23/2022]
Abstract
Static and dynamic light scattering were used to investigate the effects of L-arginine, commonly used to inhibit protein aggregation, on the initial aggregation kinetics of solutions of bovine insulin in 20% acetic acid and 0.1 M NaCl as a model system for amyloidosis. Measurements were made as a function of insulin concentration (0.5–2.0 mM), quench temperature (60–85°C), and arginine concentration (10–500 mM). Aggregation kinetics under all conditions had a lag phase, whose duration decreased with increasing temperature and with increasing insulin concentration but which increased by up to a factor of 8 with increasing added arginine. Further, the initial growth rate after the lag phase also slowed by up to a factor of about 20 in the presence of increasing concentrations of arginine. From the temperature dependence of the lag phase duration, we find that the nucleation activation energy doubles from 17 ± 5 to 36 ± 3 kcal/mol in the presence of 500 mM arginine.
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44
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Zako T, Sakono M, Kobayashi T, Sörgjerd K, Nilsson KPR, Hammarström P, Lindgren M, Maeda M. Cell interaction study of amyloid by using luminescent conjugated polythiophene: implication that amyloid cytotoxicity is correlated with prolonged cellular binding. Chembiochem 2012; 13:358-63. [PMID: 22262644 DOI: 10.1002/cbic.201100467] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Indexed: 02/01/2023]
Abstract
Needles and noodles: Studying amyloid toxicity is important for understanding protein misfolding diseases. Using a luminescent conjugated polythiophene, we found that cell binding of nontoxic filamentous amyloids of insulin and β2-microglobulin was less efficient than that of toxic fibrillar amyloids; this suggests a correlation between amyloid toxicity and cell binding.
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Affiliation(s)
- Tamotsu Zako
- Bioengineering Laboratory, RIKEN Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
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Pryor E, Kotarek JA, Moss MA, Hestekin CN. Monitoring insulin aggregation via capillary electrophoresis. Int J Mol Sci 2011; 12:9369-88. [PMID: 22272138 PMCID: PMC3257135 DOI: 10.3390/ijms12129369] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Revised: 12/06/2011] [Accepted: 12/12/2011] [Indexed: 01/30/2023] Open
Abstract
Early stages of insulin aggregation, which involve the transient formation of oligomeric aggregates, are an important aspect in the progression of Type II diabetes and in the quality control of pharmaceutical insulin production. This study is the first to utilize capillary electrophoresis (CE) with ultraviolet (UV) detection to monitor insulin oligomer formation at pH 8.0 and physiological ionic strength. The lag time to formation of the first detected species in the aggregation process was evaluated by UV-CE and thioflavin T (ThT) binding for salt concentrations from 100 mM to 250 mM. UV-CE had a significantly shorter (5–8 h) lag time than ThT binding (15–19 h). In addition, the lag time to detection of the first aggregated species via UV-CE was unaffected by salt concentration, while a trend toward an increased lag time with increased salt concentration was observed with ThT binding. This result indicates that solution ionic strength impacts early stages of aggregation and β-sheet aggregate formation differently. To observe whether CE may be applied for the analysis of biological samples containing low insulin concentrations, the limit of detection using UV and laser induced fluorescence (LIF) detection modes was determined. The limit of detection using LIF-CE, 48.4 pM, was lower than the physiological insulin concentration, verifying the utility of this technique for monitoring biological samples. LIF-CE was subsequently used to analyze the time course for fluorescein isothiocyanate (FITC)-labeled insulin oligomer formation. This study is the first to report that the FITC label prevented incorporation of insulin into oligomers, cautioning against the use of this fluorescent label as a tag for following early stages of insulin aggregation.
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Affiliation(s)
- Elizabeth Pryor
- Ralph E. Martin Department of Chemical Engineering, 3202 Bell Engineering Center, University of Arkansas, Fayetteville, AR 72701, USA; E-Mail: (E.P.)
| | - Joseph A. Kotarek
- Department of Chemical Engineering, 2C02 Swearingen Engineering Center, University of South Carolina, Columbia, SC 29208, USA; E-Mail:
| | - Melissa A. Moss
- Department of Chemical Engineering, 2C02 Swearingen Engineering Center, University of South Carolina, Columbia, SC 29208, USA; E-Mail:
| | - Christa N. Hestekin
- Ralph E. Martin Department of Chemical Engineering, 3202 Bell Engineering Center, University of Arkansas, Fayetteville, AR 72701, USA; E-Mail: (E.P.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-479-575-3416; Fax: +1-479-575-7926
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46
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Wang JM, Yang XQ, Yin SW, Yuan DB, Xia N, Qi JR. Growth kinetics of amyloid-like fibrils derived from individual subunits of soy β-conglycinin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:11270-7. [PMID: 21919519 DOI: 10.1021/jf202541m] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The amyloid-like fibrillation of soy β-conglycinin subunits (α, α', and β) upon heating (0-20 h) at 85 °C and pH 2.0 was characterized using dynamic light scattering, circular dichroism (CD), binding to amyloid dyes (Thioflavin T and Congo red), and atomic force microscopy. The fibrillation of all three subunits was accompanied by progressive polypeptide hydrolysis. The hydrolysis behaviors, fibrillation kinetics, and morphologies of amyloid-like fibrils considerably varied among α, α', and β subunits. Faster hydrolysis rates and special fragments were observed for the α and α' subunits compared to the β subunit. However, the order of the fibrillation rate and capacity to form β-sheets was α' > β > α, as evidenced by CD and Thioflavin T data. Moreover, sequential growth of twisted screw-structure fibrils, leading to macroscopic fibrils with distinct morphological characteristics, was observed for β-conglycinin and individual subunits. The different fibrillation kinetics and morphologies of α, α', and β subunits appear to be associated with the differences in the amino acid composition and typical sequence of peptides. Besides, the disruption of ordered structure of fibrils occurred upon further heating (6-20 h) due to extensive hydrolysis. These results would suggest that all subunits are involved in the fibrillation of β-conglycinin, following multiple steps including polypeptide hydrolysis, assembly to amyloid structure, and growth into macroscopic fibrils with a fibril shaving process.
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Affiliation(s)
- Jin-Mei Wang
- Department of Food Science and Technology, South China University of Technology, Guangzhou 510640, People's Republic of China
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47
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Sinha S, Lopes DHJ, Du Z, Pang ES, Shanmugam A, Lomakin A, Talbiersky P, Tennstaedt A, McDaniel K, Bakshi R, Kuo PY, Ehrmann M, Benedek GB, Loo JA, Klärner FG, Schrader T, Wang C, Bitan G. Lysine-specific molecular tweezers are broad-spectrum inhibitors of assembly and toxicity of amyloid proteins. J Am Chem Soc 2011; 133:16958-69. [PMID: 21916458 DOI: 10.1021/ja206279b] [Citation(s) in RCA: 234] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amyloidoses are diseases characterized by abnormal protein folding and self-assembly, for which no cure is available. Inhibition or modulation of abnormal protein self-assembly, therefore, is an attractive strategy for prevention and treatment of amyloidoses. We examined Lys-specific molecular tweezers and discovered a lead compound termed CLR01, which is capable of inhibiting the aggregation and toxicity of multiple amyloidogenic proteins by binding to Lys residues and disrupting hydrophobic and electrostatic interactions important for nucleation, oligomerization, and fibril elongation. Importantly, CLR01 shows no toxicity at concentrations substantially higher than those needed for inhibition. We used amyloid β-protein (Aβ) to further explore the binding site(s) of CLR01 and the impact of its binding on the assembly process. Mass spectrometry and solution-state NMR demonstrated binding of CLR01 to the Lys residues in Aβ at the earliest stages of assembly. The resulting complexes were indistinguishable in size and morphology from Aβ oligomers but were nontoxic and were not recognized by the oligomer-specific antibody A11. Thus, CLR01 binds already at the monomer stage and modulates the assembly reaction into formation of nontoxic structures. The data suggest that molecular tweezers are unique, process-specific inhibitors of aberrant protein aggregation and toxicity, which hold promise for developing disease-modifying therapy for amyloidoses.
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Affiliation(s)
- Sharmistha Sinha
- Department of Neurology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90095, USA
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48
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Photo-induced inhibition of insulin amyloid fibrillation on online laser measurement. Biochem Biophys Res Commun 2011; 409:229-34. [DOI: 10.1016/j.bbrc.2011.04.132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 04/28/2011] [Indexed: 11/22/2022]
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49
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Sorci M, Silkworth W, Gehan T, Belfort G. Evaluating nuclei concentration in amyloid fibrillation reactions using back-calculation approach. PLoS One 2011; 6:e20072. [PMID: 21625464 PMCID: PMC3098880 DOI: 10.1371/journal.pone.0020072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2010] [Accepted: 04/25/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In spite of our extensive knowledge of the more than 20 proteins associated with different amyloid diseases, we do not know how amyloid toxicity occurs or how to block its action. Recent contradictory reports suggest that the fibrils and/or the oligomer precursors cause toxicity. An estimate of their temporal concentration may broaden understanding of the amyloid aggregation process. METHODOLOGY/PRINCIPAL FINDINGS Assuming that conversion of folded protein to fibril is initiated by a nucleation event, we back-calculate the distribution of nuclei concentration. The temporal in vitro concentration of nuclei for the model hormone, recombinant human insulin, is estimated to be in the picomolar range. This is a conservative estimate since the back-calculation method is likely to overestimate the nuclei concentration because it does not take into consideration fibril fragmentation, which would lower the amount of nuclei CONCLUSIONS Because of their propensity to form aggregates (non-ordered) and fibrils (ordered), this very low concentration could explain the difficulty in isolating and blocking oligomers or nuclei toxicity and the long onset time for amyloid diseases.
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Affiliation(s)
- Mirco Sorci
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Whitney Silkworth
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Timothy Gehan
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Georges Belfort
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- * E-mail:
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50
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Wang SSS, Liu KN, Han TC. Amyloid fibrillation and cytotoxicity of insulin are inhibited by the amphiphilic surfactants. Biochim Biophys Acta Mol Basis Dis 2010; 1802:519-30. [PMID: 20176106 DOI: 10.1016/j.bbadis.2010.02.008] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Revised: 01/30/2010] [Accepted: 02/16/2010] [Indexed: 11/26/2022]
Abstract
Amyloid fibrils have been associated with at least 25 different degenerative diseases. The 51-residue polypeptide hormone insulin, which is associated with type II diabetes, has been shown to self-assemble to form amyloid fibrils in vitro. With bovine insulin as a model, the research presented here explores the effects of two amphiphilic surfactants (1,2-dihexanoyl-sn-glycero-3-phosphocholine (di-C7-PC) and 1,2-diheptanoyl-sn-glycero-3-phosphocholine (di-C7-PC)) on the in vitro fibrillation process of bovine insulin at pH 2.0 and 55 degrees C. We demonstrated that insulin fibrillation may be inhibited by both surfactants in a dose-dependent fashion. The best inhibition of fibril formation is observed when insulin is incubated with 4mM di-C7-PC. Moreover, the addition of either surfactant at the concentrations studied attenuated insulin fibril-induced cytotoxicity in both PC12 and SH-SY5Y cell lines. The results from this work may contribute to the understanding of the molecular factors affecting amyloid fibrillation and the molecular mechanism(s) of the interactions between the membrane and amyloid proteins.
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Affiliation(s)
- Steven S-S Wang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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