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Zhou W, O’Neill CL, Ding T, Zhang O, Rudra JS, Lew MD. Resolving the Nanoscale Structure of β-Sheet Peptide Self-Assemblies Using Single-Molecule Orientation-Localization Microscopy. ACS Nano 2024; 18:8798-8810. [PMID: 38478911 PMCID: PMC11025465 DOI: 10.1021/acsnano.3c11771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Synthetic peptides that self-assemble into cross-β fibrils are versatile building blocks for engineered biomaterials due to their modularity and biocompatibility, but their structural and morphological similarities to amyloid species have been a long-standing concern for their translation. Further, their polymorphs are difficult to characterize by using spectroscopic and imaging techniques that rely on ensemble averaging to achieve high resolution. Here, we utilize Nile red (NR), an amyloidophilic fluorogenic probe, and single-molecule orientation-localization microscopy (SMOLM) to characterize fibrils formed by the designed amphipathic enantiomers KFE8L and KFE8D and the pathological amyloid-beta peptide Aβ42. Importantly, NR SMOLM reveals the helical (bilayer) ribbon structure of both KFE8 and Aβ42 and quantifies the precise tilt of the fibrils' inner and outer backbones in relevant buffer conditions without the need for covalent labeling or sequence mutations. SMOLM also distinguishes polymorphic branched and curved morphologies of KFE8, whose backbones exhibit much more heterogeneity than those of typical straight fibrils. Thus, SMOLM is a powerful tool to interrogate the structural differences and polymorphism between engineered and pathological cross-β-rich fibrils.
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Affiliation(s)
- Weiyan Zhou
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Conor L. O’Neill
- Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Tianben Ding
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Oumeng Zhang
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Jai S. Rudra
- Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Matthew D. Lew
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
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2
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O'Neill N, Lima TA, Furlan Ferreira F, Alvarez NJ, Schweitzer-Stenner R. Determining the nanostructure and main axis of gly-his-gly fibrils using the amide I' bands in FTIR, VCD, and Raman spectra. Spectrochim Acta A Mol Biomol Spectrosc 2024; 306:123584. [PMID: 37956526 DOI: 10.1016/j.saa.2023.123584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/29/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023]
Abstract
The zwitterionic tripeptide glycyl-histidine-glycine (GHG) has been shown to self-assemble into visible crystalline fibrils that form a gel-supporting network with a very high storage modulus. Here we elaborate on the theory and experimental setup behind our novel approach employed to determining the main fibril axis for these gel-forming fibrils by simulating the amide I band profile for infrared absorption (IR), vibrational circular dichroism (VCD), and visible Raman scattering. We also highlight that combining these three vibrational spectroscopies can help in validating structures that are solved using powder x-ray diffraction analysis (PXRD). The PXRD analysis yielded a GHG fibril unit cell with P21 symmetry containing two peptide monomers and two water molecules. The monomers adopt a conformation reminiscent of the distorted polyproline II conformation obtained for tri-lysine in aqueous solution. Stabilization occurs primarily through peptide-peptide intermolecular hydrogen bond interactions, while the role of water in peptide hydration is minimal. The comparison of simulated and experimental amide I' band profiles suggests that the xz plane of the crystal unit cell is being predominantly probed in the experimental IR and VCD spectra, with the x axis of the unit cell pointing in the direction of the main fibril axis. The monomer peptide in the unit cell interacts with six adjacent peptides forming hydrophobic channels by edge-to-face and parallel-displaced ππstacking in the y direction. These cores are further stabilized by a plethora of intermolecular interactions in the x and z directions. Our result suggests that the hydrophobic xz-surfaces would be a good target for the adsorption of hydrophobic drugs.
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Affiliation(s)
- Nichole O'Neill
- Department of Chemistry, Drexel University, Philadelphia, PA 19104, USA; Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA 19104, USA
| | - Thamires A Lima
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA 19104, USA
| | - Fabio Furlan Ferreira
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210-580, Brazil
| | - Nicolas J Alvarez
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA 19104, USA.
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Shrimali PC, Chen S, Das A, Dreher R, Howard MK, Ryan JJ, Buck J, Kim D, Sprunger ML, Rudra JS, Jackrel ME. Amyloidogenic propensity of self-assembling peptides and their adjuvant potential for use as DNA vaccines. Acta Biomater 2023; 169:464-476. [PMID: 37586449 DOI: 10.1016/j.actbio.2023.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 07/27/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
De novo designed peptides that self-assemble into cross-β rich fibrillar biomaterials have been pursued as an innovative platform for the development of adjuvant- and inflammation-free vaccines. However, they share structural and morphological properties similar to amyloid species implicated in neurodegenerative diseases, which has been a long-standing concern for their successful translation. Here, we comprehensively characterize the amyloidogenic character of the amphipathic self-assembling cross-β peptide KFE8, compared to pathological amyloid and amyloid-like proteins α-synuclein (α-syn) and TDP-43. Further, we developed plasmid-based DNA vaccines with the KFE8 backbone serving as a scaffold for delivery of a GFP model antigen. We find that expression of tandem repeats of KFE8 is non-toxic and efficiently cleared by autophagy. We also demonstrate that preformed KFE8 fibrils do not cross-seed amyloid formation of α-syn in mammalian cells compared to α-syn preformed fibrils. In mice, vaccination with plasmids encoding the KFE32-GFP fusion protein elicited robust immune responses, inducing production of significantly higher levels of anti-GFP antibodies compared to soluble GFP. Antigen-specific CD8+T cells were also detected in the spleens of vaccinated mice and cytokine profiles from antigen recall assays indicate a balanced Th1/Th2 response. These findings illustrate that cross-β-rich peptide nanofibers have distinct physicochemical properties from those of pathological amyloidogenic proteins, and are an attractive platform for the development of DNA vaccines with self-adjuvanting properties and improved safety profiles. STATEMENT OF SIGNIFICANCE: Biomaterials comprised of self-assembling peptides hold great promise for the development of new vaccines that do not require use of adjuvants. However, these materials have safety concerns, as they self-assemble into cross-β rich fibrils that are structurally similar to amyloid species implicated in disease. Here, we comprehensively study the properties of these biomaterials. We demonstrate that they have distinct properties from pathological proteins. They are non-toxic and do not trigger amyloidogenesis. Vaccination of these materials in mice elicited a robust immune response. Most excitingly, our work suggests that this platform could be used to develop DNA-based vaccines, which have few storage requirements. Further, due to their genetic encoding, longer sequences can be generated and the vaccines will be amenable to modification.
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Affiliation(s)
- Paresh C Shrimali
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA
| | - Sheng Chen
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Anirban Das
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA; Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Rachel Dreher
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Matthew K Howard
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Jeremy J Ryan
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Jeremy Buck
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA
| | - Darren Kim
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA
| | - Macy L Sprunger
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Jai S Rudra
- Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA.
| | - Meredith E Jackrel
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA.
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4
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Yuan Y, Chen L, Kong L, Qiu L, Fu Z, Sun M, Liu Y, Cheng M, Ma S, Wang X, Zhao C, Jiang J, Zhang X, Wang L, Gao L. Histidine modulates amyloid-like assembly of peptide nanomaterials and confers enzyme-like activity. Nat Commun 2023; 14:5808. [PMID: 37726302 PMCID: PMC10509148 DOI: 10.1038/s41467-023-41591-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/08/2023] [Indexed: 09/21/2023] Open
Abstract
Amyloid-like assembly is not only associated with pathological events, but also leads to the development of novel nanomaterials with unique properties. Herein, using Fmoc diphenylalanine peptide (Fmoc-F-F) as a minimalistic model, we found that histidine can modulate the assembly behavior of Fmoc-F-F and induce enzyme-like catalysis. Specifically, the presence of histidine rearranges the β structure of Fmoc-F-F to assemble nanofilaments, resulting in the formation of active site to mimic peroxidase-like activity that catalyzes ROS generation. A similar catalytic property is also observed in Aβ assembled filaments, which is correlated with the spatial proximity between intermolecular histidine and F-F. Notably, the assembled Aβ filaments are able to induce cellular ROS elevation and damage neuron cells, providing an insight into the pathological relationship between Aβ aggregation and Alzheimer's disease. These findings highlight the potential of histidine as a modulator in amyloid-like assembly of peptide nanomaterials exerting enzyme-like catalysis.
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Affiliation(s)
- Ye Yuan
- Key Laboratory for Molecular Enzymology and Engineering, School of Life Sciences, Jilin University, Changchun, 130012, China
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- Nanozyme Medical Center, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Lei Chen
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lingfei Kong
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lingling Qiu
- Key Laboratory of Animal Genetics and Breeding and Molecular Design of Jiangsu Province, Yangzhou University, Yangzhou, China
| | - Zhendong Fu
- Key Laboratory for Molecular Enzymology and Engineering, School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Minmin Sun
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yuan Liu
- Nanozyme Medical Center, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Miaomiao Cheng
- Nanozyme Medical Center, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Saiyu Ma
- Nanozyme Medical Center, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiaonan Wang
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Changhui Zhao
- Key Laboratory for Molecular Enzymology and Engineering, School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Jing Jiang
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xinzheng Zhang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Liping Wang
- Key Laboratory for Molecular Enzymology and Engineering, School of Life Sciences, Jilin University, Changchun, 130012, China.
| | - Lizeng Gao
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
- Nanozyme Medical Center, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
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5
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Zhou W, O’Neill CL, Ding T, Zhang O, Rudra JS, Lew MD. Resolving the nanoscale structure of β-sheet assemblies using single-molecule orientation-localization microscopy. bioRxiv 2023:2023.09.13.557571. [PMID: 37745382 PMCID: PMC10515885 DOI: 10.1101/2023.09.13.557571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Synthetic peptides that self-assemble into cross-β fibrils have remarkable utility as engineered biomaterials due to their modularity and biocompatibility, but their structural and morphological similarity to amyloid species has been a long-standing concern for their translation. Further, their polymorphs are difficult to characterize using spectroscopic and imaging techniques that rely on ensemble averaging to achieve high resolution. Here, we utilize single-molecule orientation-localization microscopy (SMOLM) to characterize fibrils formed by the designed amphipathic enantiomers, KFE8L and KFE8D, and the pathological amyloid-beta peptide Aβ42. SMOLM reveals that the orientations of Nile red, as it transiently binds to both KFE8 and Aβ42, are consistent with a helical (bilayer) ribbon structure and convey the precise tilt of the fibrils' inner and outer backbones. SMOLM also finds polymorphic branched and curved morphologies of KFE8 whose backbones exhibit much more heterogeneity than those of more typical straight fibrils. Thus, SMOLM is a powerful tool to interrogate the structural differences and polymorphism between engineered and pathological cross β-rich fibrils.
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Affiliation(s)
- Weiyan Zhou
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Conor L. O’Neill
- Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Tianben Ding
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Oumeng Zhang
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Jai S. Rudra
- Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Matthew D. Lew
- Department of Electrical and Systems Engineering, McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
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6
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Paladino A, Vitagliano L, Graziano G. The Action of Chemical Denaturants: From Globular to Intrinsically Disordered Proteins. Biology (Basel) 2023; 12:biology12050754. [PMID: 37237566 DOI: 10.3390/biology12050754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/15/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023]
Abstract
Proteins perform their many functions by adopting either a minimal number of strictly similar conformations, the native state, or a vast ensemble of highly flexible conformations. In both cases, their structural features are highly influenced by the chemical environment. Even though a plethora of experimental studies have demonstrated the impact of chemical denaturants on protein structure, the molecular mechanism underlying their action is still debated. In the present review, after a brief recapitulation of the main experimental data on protein denaturants, we survey both classical and more recent interpretations of the molecular basis of their action. In particular, we highlight the differences and similarities of the impact that denaturants have on different structural classes of proteins, i.e., globular, intrinsically disordered (IDP), and amyloid-like assemblies. Particular attention has been given to the IDPs, as recent studies are unraveling their fundamental importance in many physiological processes. The role that computation techniques are expected to play in the near future is illustrated.
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Affiliation(s)
- Antonella Paladino
- Institute of Biostructures and Bioimaging, CNR, Via Pietro Castellino 111, 80131 Naples, Italy
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging, CNR, Via Pietro Castellino 111, 80131 Naples, Italy
| | - Giuseppe Graziano
- Department of Science and Technology, University of Sannio, via Francesco de Sanctis snc, 82100 Benevento, Italy
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7
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Balasco N, Diaferia C, Rosa E, Monti A, Ruvo M, Doti N, Vitagliano L. A Comprehensive Analysis of the Intrinsic Visible Fluorescence Emitted by Peptide/Protein Amyloid-like Assemblies. Int J Mol Sci 2023; 24:ijms24098372. [PMID: 37176084 PMCID: PMC10178990 DOI: 10.3390/ijms24098372] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
Amyloid aggregation is a widespread process that involves proteins and peptides with different molecular complexity and amino acid composition. The structural motif (cross-β) underlying this supramolecular organization generates aggregates endowed with special mechanical and spectroscopic properties with huge implications in biomedical and technological fields, including emerging precision medicine. The puzzling ability of these assemblies to emit intrinsic and label-free fluorescence in regions of the electromagnetic spectrum, such as visible and even infrared, usually considered to be forbidden in the polypeptide chain, has attracted interest for its many implications in both basic and applied science. Despite the interest in this phenomenon, the physical basis of its origin is still poorly understood. To gain a global view of the available information on this phenomenon, we here provide an exhaustive survey of the current literature in which original data on this fluorescence have been reported. The emitting systems have been classified in terms of their molecular complexity, amino acid composition, and physical state. Information about the wavelength of the radiation used for the excitation as well as the emission range/peak has also been retrieved. The data collected here provide a picture of the complexity of this multifaceted phenomenon that could be helpful for future studies aimed at defining its structural and electronic basis and/or stimulating new applications.
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Affiliation(s)
- Nicole Balasco
- Institute of Molecular Biology and Pathology, National Research Council (CNR), Department of Chemistry, University of Rome Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Carlo Diaferia
- Department of Pharmacy and CIRPeB, Research Centre on Bioactive Peptides "Carlo Pedone", University of Naples "Federico II", Via Montesano 49, 80131 Naples, Italy
| | - Elisabetta Rosa
- Department of Pharmacy and CIRPeB, Research Centre on Bioactive Peptides "Carlo Pedone", University of Naples "Federico II", Via Montesano 49, 80131 Naples, Italy
| | - Alessandra Monti
- Institute of Biostructures and Bioimaging (IBB), National Research Council (CNR), 80131 Napoli, Italy
| | - Menotti Ruvo
- Institute of Biostructures and Bioimaging (IBB), National Research Council (CNR), 80131 Napoli, Italy
| | - Nunzianna Doti
- Institute of Biostructures and Bioimaging (IBB), National Research Council (CNR), 80131 Napoli, Italy
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging (IBB), National Research Council (CNR), 80131 Napoli, Italy
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8
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Bertouille J, Kasas S, Martin C, Hennecke U, Ballet S, Willaert RG. Fast Self-Assembly Dynamics of a β-Sheet Peptide Soft Material. Small 2023; 19:e2206795. [PMID: 36807731 DOI: 10.1002/smll.202206795] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/28/2022] [Indexed: 05/18/2023]
Abstract
Peptide-based hydrogels are promising biocompatible materials for wound healing, drug delivery, and tissue engineering applications. The physical properties of these nanostructured materials depend strongly on the morphology of the gel network. However, the self-assembly mechanism of the peptides that leads to a distinct network morphology is still a subject of ongoing debate, since complete assembly pathways have not yet been resolved. To unravel the dynamics of the hierarchical self-assembly process of the model β-sheet forming peptide KFE8 (Ac-FKFEFKFE-NH2 ), high-speed atomic force microscopy (HS-AFM) in liquid is used. It is demonstrated that a fast-growing network, based on small fibrillar aggregates, is formed at a solid-liquid interface, while in bulk solution, a distinct, more prolonged nanotube network emerges from intermediate helical ribbons. Moreover, the transformation between these morphologies has been visualized. It is expected that this new in situ and in real-time methodology will set the path for the in-depth unravelling of the dynamics of other peptide-based self-assembled soft materials, as well as gaining advanced insights into the formation of fibers involved in protein misfolding diseases.
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Affiliation(s)
- Jolien Bertouille
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Sandor Kasas
- Laboratory of Biological Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
- International Joint Research Group VUB-EPFL BioNanotechnology & NanoMedicine, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Charlotte Martin
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Ulrich Hennecke
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Steven Ballet
- Research Group of Organic Chemistry, Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Ronnie G Willaert
- International Joint Research Group VUB-EPFL BioNanotechnology & NanoMedicine, Vrije Universiteit Brussel, Brussels, 1050, Belgium
- Research Group Structural Biology Brussels, Alliance Research Group VUB-UGent NanoMicrobiology, Vrije Universiteit Brussel, Brussels, 1050, Belgium
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9
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Bana J, Warwar J, Bayer EA, Livnah O. Self-assembly of a dimeric avidin into unique higher-order oligomers. FEBS J 2023. [PMID: 36853192 DOI: 10.1111/febs.16764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 02/16/2023] [Accepted: 02/27/2023] [Indexed: 03/01/2023]
Abstract
The dimeric avidin family has been expanded in recent years to include many new members. All of them lack the intermonomeric Trp that plays a critical role in biotin-binding. Nevertheless, these new members of the avidins maintain the high affinity towards biotin. Additionally, all of the dimeric avidins share a very unique property: namely, the cylindrical oligomerization in the crystal structure. The newest member described here, agroavidin from the agrobacterium, Rhizobium sp. AAP43, shares their important structural features. However, the affinity of agroavidin towards biotin is lower than all other members of the avidin family, due to the presence of phenylalanine instead of a conserved tyrosine in the biotin-binding site. Mutating this phenylalanine into tyrosine regenerated the high affinity, which emphasizes the importance of this particular tyrosine residue. Another unique feature that distinguishes agroavidin from the other dimeric avidins is that it does not produce oligomers in its crystal structure. In order to understand the factors that promote oligomerization in dimeric avidins, we exchanged the C-terminal region of agroavidin with that of hoefavidin that produced octamers. This exchange resulted in a decamer rather than an octamer. This unusual outcome demonstrates the impact of the C-terminal region on the ability to produce oligomers. The decameric assembly of agroavidin expands the avidin-biotin toolbox even further and could well pave the path into new biotin-based technologies. Moreover, uncovering the factors that induce dimeric avidins into oligomeric assemblies may aid in better understanding the general molecular determinants that promote oligomerization.
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Affiliation(s)
- Juana Bana
- Department of Biological Chemistry, The Wolfson Centre for Applied Structural Biology, Alexander Silverman Institute of Life Sciences, The Edmond J. Safra Campus, The Hebrew University of Jerusalem, Israel
| | - Jessica Warwar
- Department of Biological Chemistry, The Wolfson Centre for Applied Structural Biology, Alexander Silverman Institute of Life Sciences, The Edmond J. Safra Campus, The Hebrew University of Jerusalem, Israel
| | - Edward A Bayer
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Oded Livnah
- Department of Biological Chemistry, The Wolfson Centre for Applied Structural Biology, Alexander Silverman Institute of Life Sciences, The Edmond J. Safra Campus, The Hebrew University of Jerusalem, Israel
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Makshakova O, Bogdanova L, Faizullin D, Khaibrakhmanova D, Ziganshina S, Ermakova E, Zuev Y, Sedov I. The Ability of Some Polysaccharides to Disaggregate Lysozyme Amyloid Fibrils and Renature the Protein. Pharmaceutics 2023; 15. [PMID: 36839946 DOI: 10.3390/pharmaceutics15020624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
The deposition of proteins in the form of insoluble amyloid fibril aggregates is linked to a range of diseases. The supramolecular architecture of such deposits is governed by the propagation of β-strands in the direction of protofilament growth. In the present study, we analyze the structural changes of hen egg-white lysozyme fibrils upon their interactions with a range of polysaccharides, using AFM and FTIR spectroscopy. Linear anionic polysaccharides, such as κ-carrageenan and sodium alginate, are shown to be capable to disaggregate protofilaments with eventual protein renaturation. The results help to understand the mechanism of amyloid disaggregation and create a platform for both the development of new therapeutic agents for amyloidose treatment, and the design of novel functional protein-polysaccharide complex-based nanomaterials.
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11
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Kaygisiz K, Ender AM, Gačanin J, Kaczmarek LA, Koutsouras DA, Nalakath AN, Winterwerber P, Mayer FJ, Räder HJ, Marszalek T, Blom PWM, Synatschke CV, Weil T. Photoinduced Amyloid Fibril Degradation for Controlled Cell Patterning. Macromol Biosci 2023; 23:e2200294. [PMID: 36281903 DOI: 10.1002/mabi.202200294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/14/2022] [Indexed: 11/12/2022]
Abstract
Amyloid-like fibrils are a special class of self-assembling peptides that emerge as a promising nanomaterial with rich bioactivity for applications such as cell adhesion and growth. Unlike the extracellular matrix, the intrinsically stable amyloid-like fibrils do not respond nor adapt to stimuli of their natural environment. Here, a self-assembling motif (CKFKFQF), in which a photosensitive o-nitrobenzyl linker (PCL) is inserted, is designed. This peptide (CKFK-PCL-FQF) assembles into amyloid-like fibrils comparable to the unsubstituted CKFKFQF and reveals a strong response to UV-light. After UV irradiation, the secondary structure of the fibrils, fibril morphology, and bioactivity are lost. Thus, coating surfaces with the pre-formed fibrils and exposing them to UV-light through a photomask generate well-defined areas with patterns of intact and destroyed fibrillar morphology. The unexposed, fibril-coated surface areas retain their ability to support cell adhesion in culture, in contrast to the light-exposed regions, where the cell-supportive fibril morphology is destroyed. Consequently, the photoresponsive peptide nanofibrils provide a facile and efficient way of cell patterning, exemplarily demonstrated for A549, Chinese Hamster Ovary, and Raw Dual type cells. This study introduces photoresponsive amyloid-like fibrils as adaptive functional materials to precisely arrange cells on surfaces.
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Affiliation(s)
- Kübra Kaygisiz
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Adriana M Ender
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Jasmina Gačanin
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - L Alix Kaczmarek
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Dimitrios A Koutsouras
- Department of Molecular Electronics, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Abin N Nalakath
- Department of Molecular Electronics, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Pia Winterwerber
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Franz J Mayer
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Hans-Joachim Räder
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Tomasz Marszalek
- Department of Molecular Electronics, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, Lodz, 90-924, Poland
| | - Paul W M Blom
- Department of Molecular Electronics, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Christopher V Synatschke
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Tanja Weil
- Department Synthesis of Macromolecules, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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12
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Contuzzi N, Casalino G, Boccaccio A, Ballini A, Charitos IA, Bottalico L, Santacroce L. Metals Biotribology and Oral Microbiota Biocorrosion Mechanisms. J Funct Biomater 2022; 14:14. [PMID: 36662061 PMCID: PMC9863779 DOI: 10.3390/jfb14010014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/13/2022] [Accepted: 12/17/2022] [Indexed: 12/28/2022] Open
Abstract
During the last decades, metal-based biomaterials have been extensively explored to be used as biocompatible metals for biomedical applications, owing to their superior mechanical properties and corrosion resistance. Consequently, for long-term implanted medical devices, to assure the biomaterials' reliability, functionality, and biocompatibility, studying the various bio-tribological damage mechanisms to obtain the optimum properties is one of the most important goals. In this review, we consider the most important metal-based biomaterials such as stainless steel, alloys of titanium (Ti), cobalt-chromium (Co-Cr), and Nichel-Titatium (Ni-Ti), as well Magnesium (Mg) alloys and with Tantalum (Ta), emphasizing their characteristics, clinical applications, and deterioration over time. The influence of metal elements on biological safety, including significant effects of metal-based biomaterials in dentistry were discussed, considering the perspectives of surface, mechanical properties, corrosion behaviors, including interactions, bio-mechanisms with tissues, and oral environments. In addition, the role of the oral microbiota was explored due to its role in this erosion condition, in order to further understand the mechanism of metal-based biomaterials implanted on the microflora balance of aerobic and anaerobic bacteria in an oral environment.
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Affiliation(s)
- Nicola Contuzzi
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Via Orabona 4, 70125 Bari, Italy
| | - Giuseppe Casalino
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Via Orabona 4, 70125 Bari, Italy
| | - Antonio Boccaccio
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Via Orabona 4, 70125 Bari, Italy
| | - Andrea Ballini
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Via Orabona 4, 70125 Bari, Italy
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Ioannis Alexandros Charitos
- Emergency/Urgent Department, National Poisoning Center, Riuniti University Hospital of Foggia, 71122 Foggia, Italy
| | - Lucrezia Bottalico
- Interdepartmental Research Center for Pre-Latin, Latin and Oriental Rights and Culture Studies (CEDICLO), University of Bari, 70121 Bari, Italy
| | - Luigi Santacroce
- Department of Interdisciplinary Medicine, Microbiology and Virology Unit, University of Bari “Aldo Moro”, 70126 Bari, Italy
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13
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Dias AMGC, Cena C, Lutz-Bueno V, Mezzenga R, Marques A, Ferreira I, Roque ACA. Solvent modulation in peptide sub-microfibers obtained by solution blow spinning. Front Chem 2022; 10:1054347. [PMID: 36561144 PMCID: PMC9763608 DOI: 10.3389/fchem.2022.1054347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022] Open
Abstract
Peptides possess high chemical diversity at the amino acid sequence level, which further translates into versatile functions. Peptides with self-assembling properties can be processed into diverse formats giving rise to bio-based materials. Peptide-based spun fibers are an interesting format due to high surface-area and versatility, though the field is still in its infancy due to the challenges in applying the synthetic polymer spinning processes to protein fibers to peptides. In this work we show the use of solution blow-spinning to produce peptide fibers. Peptide fiber formation was assisted by the polymer poly (vinyl pyrrolidone) (PVP) in two solvent conditions. Peptide miscibility and further self-assembling propensity in the solvents played a major role in fiber formation. When employing acetic acid as solvent, peptide fibers (0.5 μm) are formed around PVP fibers (0.75 μm), whereas in isopropanol only one type of fibers are formed, consisting of mixed peptide and PVP (1 μm). This report highlights solvent modulation as a mean to obtain different peptide sub-microfibers via a single injection nozzle in solution blow spinning. We anticipate this strategy to be applied to other small peptides with self-assembly propensity to obtain multi-functional proteinaceous fibers.
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Affiliation(s)
- Ana Margarida Gonçalves Carvalho Dias
- Associate Laboratory i4HB, Chemistry Department, NOVA School of Science and Technology, Institute for Health and Bioeconomy, Caparica, Portugal,UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal,*Correspondence: Ana Margarida Gonçalves Carvalho Dias, ; Ana Cecília Afonso Roque,
| | - Cícero Cena
- UFMS—Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Viviane Lutz-Bueno
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland,Paul Scherrer Institute, Villigen PSI, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Ana Marques
- i3N, Materials Department, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal,Physics Department, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Isabel Ferreira
- i3N, Materials Department, School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Ana Cecília Afonso Roque
- Associate Laboratory i4HB, Chemistry Department, NOVA School of Science and Technology, Institute for Health and Bioeconomy, Caparica, Portugal,UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal,*Correspondence: Ana Margarida Gonçalves Carvalho Dias, ; Ana Cecília Afonso Roque,
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14
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Karaki T, Haniu H, Matsuda Y, Tsukahara T. Lysophospholipids: A Potential Drug Candidates for Neurodegenerative Disorders. Biomedicines 2022; 10. [PMID: 36551882 DOI: 10.3390/biomedicines10123126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Neurodegenerative diseases (NDs) commonly present misfolded and aggregated proteins. Considerable research has been performed to unearth the molecular processes underpinning this pathological aggregation and develop therapeutic strategies targeting NDs. Fibrillary deposits of α-synuclein (α-Syn), a highly conserved and thermostable protein, are a critical feature in the development of NDs such as Alzheimer's disease (AD), Lewy body disease (LBD), Parkinson's disease (PD), and multiple system atrophy (MSA). Inhibition of α-Syn aggregation can thus serve as a potential approach for therapeutic intervention. Recently, the degradation of target proteins by small molecules has emerged as a new therapeutic modality, gaining the hotspot in pharmaceutical research. Additionally, interest is growing in the use of food-derived bioactive compounds as intervention agents against NDs via functional foods and dietary supplements. According to reports, dietary bioactive phospholipids may have cognition-enhancing and neuroprotective effects, owing to their abilities to influence cognition and mental health in vivo and in vitro. However, the mechanisms by which lipids may prevent the pathological aggregation of α-Syn warrant further clarification. Here, we review evidence for the potential mechanisms underlying this effect, with a particular focus on how porcine liver decomposition product (PLDP)-derived lysophospholipids (LPLs) may inhibit α-Syn aggregation.
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15
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O'Neill N, Lima TA, Ferreira FF, Thursch L, Alvarez N, Schweitzer-Stenner R. Forbidden Secondary Structures Found in Gel-Forming Fibrils of Glycylphenylalanylglycine. J Phys Chem B 2022; 126:8080-8093. [PMID: 36194765 DOI: 10.1021/acs.jpcb.2c05010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The zwitterionic l-tripeptide glycylphenylalanylglycine self-assembles into very long crystalline fibrils in an aqueous solution, which causes the formation of an exceptionally strong gel phase (G' ∼ 5 × 106 Pa). The Rietveld refinement analysis of its powder X-ray diffraction (PXRD) pattern reveals a unit cell with four peptides forming a P212121 space group and adopting an inverse polyproline II conformation, that is, a right-handed helical structure that occupies the "forbidden" region of the Ramachandran plot. This unusual structure is stabilized by a plethora of intermolecular interactions facilitated by the large number of different functional groups of the unblocked tripeptide. Comparisons of simulated and experimental Fourier transform infrared and vibrational circular dichroism (VCD) amide I' profiles corroborate the PXRD structure. Our experimental setup reduces the sample to a quasi-two-dimensional network of fibrils. We exploited the influence of this reduced dimensionality on the amide I VCD to identify the main fibril axis. We demonstrate that PXRD, vibrational spectroscopy, and amide I simulations provide a powerful toolset for secondary structure and fibril axis determination.
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Affiliation(s)
- Nichole O'Neill
- Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania19104, United States.,Department of Chemical Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania19104, United States
| | - Thamires A Lima
- Department of Chemical Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania19104, United States
| | - Fabio Furlan Ferreira
- Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Av. Dos Estados, 5001, S622-3, Santo André, São Paulo09210-580, Brazil
| | - Lavenia Thursch
- Department of Chemical Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania19104, United States
| | - Nicolas Alvarez
- Department of Chemical Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania19104, United States
| | - Reinhard Schweitzer-Stenner
- Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania19104, United States
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16
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Diaferia C, Rosa E, Morelli G, Accardo A. Fmoc-Diphenylalanine Hydrogels: Optimization of Preparation Methods and Structural Insights. Pharmaceuticals (Basel) 2022; 15:1048. [PMID: 36145269 PMCID: PMC9505424 DOI: 10.3390/ph15091048] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/17/2022] Open
Abstract
Hydrogels (HGs) are tri-dimensional materials with a non-Newtonian flow behaviour formed by networks able to encapsulate high amounts of water or other biological fluids. They can be prepared using both synthetic or natural polymers and their mechanical and functional properties may change according to the preparation method, the solvent, the pH, and to others experimental parameters. Recently, many short and ultra-short peptides have been investigated as building blocks for the formulation of biocompatible hydrogels suitable for different biomedical applications. Due to its simplicity and capability to gel in physiological conditions, Fmoc-FF dipeptide is one of the most studied peptide hydrogelators. Although its identification dates to 15 ago, its behaviour is currently studied because of the observation that the final material obtained is deeply dependent on the preparation method. To collect information about their formulation, here are reported some different strategies adopted until now for the Fmoc-FF HG preparation, noting the changes in the structural arrangement and behaviour in terms of stiffness, matrix porosity, and stability induced by the different formulation strategy on the final material.
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17
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Wang T, Wu J, Wang R, Zhong Q. Nanostructures self-assembled from food-grade molecules with pH-cycle as functional food ingredients. Trends Food Sci Technol 2022; 120:36-47. [DOI: 10.1016/j.tifs.2022.01.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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18
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Diaferia C, Schiattarella C, Gallo E, Della Ventura B, Morelli G, Velotta R, Vitagliano L, Accardo A. Fluorescence Emission of Self-assembling Amyloid-like Peptides: Solution versus Solid State. Chemphyschem 2021; 22:2215-2221. [PMID: 34496136 PMCID: PMC8597038 DOI: 10.1002/cphc.202100570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/01/2021] [Indexed: 01/15/2023]
Abstract
Analysis of the intrinsic UV-visible fluorescence exhibited by self-assembling amyloid-like peptides in solution and in solid the state highlights that their physical state has a profound impact on the optical properties. In the solid state, a linear dependence of the fluorescence emission peaks as a function of excitation wavelength is detected. On the contrary, an excitation-independent emission is observed in solution. The present findings constitute a valuable benchmark for current and future explanations of the fluorescence emission by amyloids.
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Affiliation(s)
- Carlo Diaferia
- Department of Pharmacy andResearch Centre on Bioactive Peptides (CIRPeB)University of Naples “Federico II”Via Mezzocannone 16Naples80134Italy
| | - Chiara Schiattarella
- Institute of Applied Sciences and Intelligent Systems, CNRVia P. Castellino 111Naples80131Italy
| | | | - Bartolomeo Della Ventura
- Department of Physics “Ettore Pancini”University of Naples “Federico II”Via Cintia 26Naples80125Italy
| | - Giancarlo Morelli
- Department of Pharmacy andResearch Centre on Bioactive Peptides (CIRPeB)University of Naples “Federico II”Via Mezzocannone 16Naples80134Italy
| | - Raffaele Velotta
- Department of Physics “Ettore Pancini”University of Naples “Federico II”Via Cintia 26Naples80125Italy
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging (IBB), CNRVia Mezzocannone 1680134NaplesItaly
| | - Antonella Accardo
- Department of Pharmacy andResearch Centre on Bioactive Peptides (CIRPeB)University of Naples “Federico II”Via Mezzocannone 16Naples80134Italy
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19
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Smaldone G, Caruso D, Sandomenico A, Iaccarino E, Focà A, Ruggiero A, Ruvo M, Vitagliano L. Members of the GADD45 Protein Family Show Distinct Propensities to form Toxic Amyloid-Like Aggregates in Physiological Conditions. Int J Mol Sci 2021; 22:10700. [PMID: 34639041 PMCID: PMC8509203 DOI: 10.3390/ijms221910700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 12/27/2022] Open
Abstract
The three members (GADD45α, GADD45β, and GADD45γ) of the growth arrest and DNA damage-inducible 45 (GADD45) protein family are involved in a myriad of diversified cellular functions. With the aim of unravelling analogies and differences, we performed comparative biochemical and biophysical analyses on the three proteins. The characterization and quantification of their binding to the MKK7 kinase, a validated functional partner of GADD45β, indicate that GADD45α and GADD45γ are strong interactors of the kinase. Despite their remarkable sequence similarity, the three proteins present rather distinct biophysical properties. Indeed, while GADD45β and GADD45γ are marginally stable at physiological temperatures, GADD45α presents the Tm value expected for a protein isolated from a mesophilic organism. Surprisingly, GADD45α and GADD45β, when heated, form high-molecular weight species that exhibit features (ThT binding and intrinsic label-free UV/visible fluorescence) proper of amyloid-like aggregates. Cell viability studies demonstrate that they are endowed with a remarkable toxicity against SHSY-5Y and HepG2 cells. The very uncommon property of GADD45β to form cytotoxic species in near-physiological conditions represents a puzzling finding with potential functional implications. Finally, the low stability and/or the propensity to form toxic species of GADD45 proteins constitute important features that should be considered in interpreting their many functions.
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Affiliation(s)
| | - Daniela Caruso
- Institute of Biostructures and Bioimaging, C.N.R., Via Mezzocannone 16, 80134 Napoli, Italy; (D.C.); (A.S.); (E.I.); (A.F.); (A.R.)
| | - Annamaria Sandomenico
- Institute of Biostructures and Bioimaging, C.N.R., Via Mezzocannone 16, 80134 Napoli, Italy; (D.C.); (A.S.); (E.I.); (A.F.); (A.R.)
| | - Emanuela Iaccarino
- Institute of Biostructures and Bioimaging, C.N.R., Via Mezzocannone 16, 80134 Napoli, Italy; (D.C.); (A.S.); (E.I.); (A.F.); (A.R.)
| | - Annalia Focà
- Institute of Biostructures and Bioimaging, C.N.R., Via Mezzocannone 16, 80134 Napoli, Italy; (D.C.); (A.S.); (E.I.); (A.F.); (A.R.)
| | - Alessia Ruggiero
- Institute of Biostructures and Bioimaging, C.N.R., Via Mezzocannone 16, 80134 Napoli, Italy; (D.C.); (A.S.); (E.I.); (A.F.); (A.R.)
| | - Menotti Ruvo
- Institute of Biostructures and Bioimaging, C.N.R., Via Mezzocannone 16, 80134 Napoli, Italy; (D.C.); (A.S.); (E.I.); (A.F.); (A.R.)
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging, C.N.R., Via Mezzocannone 16, 80134 Napoli, Italy; (D.C.); (A.S.); (E.I.); (A.F.); (A.R.)
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20
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Li J, Zhang F. Amyloids as Building Blocks for Macroscopic Functional Materials: Designs, Applications and Challenges. Int J Mol Sci 2021; 22:10698. [PMID: 34639037 DOI: 10.3390/ijms221910698] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/29/2021] [Accepted: 09/29/2021] [Indexed: 12/25/2022] Open
Abstract
Amyloids are self-assembled protein aggregates that take cross-β fibrillar morphology. Although some amyloid proteins are best known for their association with Alzheimer’s and Parkinson’s disease, many other amyloids are found across diverse organisms, from bacteria to humans, and they play vital functional roles. The rigidity, chemical stability, high aspect ratio, and sequence programmability of amyloid fibrils have made them attractive candidates for functional materials with applications in environmental sciences, material engineering, and translational medicines. This review focuses on recent advances in fabricating various types of macroscopic functional amyloid materials. We discuss different design strategies for the fabrication of amyloid hydrogels, high-strength materials, composite materials, responsive materials, extracellular matrix mimics, conductive materials, and catalytic materials.
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21
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Zhang M, Li L, An H, Zhang P, Liu P. Repair of Peripheral Nerve Injury Using Hydrogels Based on Self-Assembled Peptides. Gels 2021; 7:152. [PMID: 34698159 PMCID: PMC8544532 DOI: 10.3390/gels7040152] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/20/2021] [Accepted: 09/23/2021] [Indexed: 12/15/2022] Open
Abstract
Peripheral nerve injury often occurs in young adults and is characterized by complex regeneration mechanisms, poor prognosis, and slow recovery, which not only creates psychological obstacles for the patients but also causes a significant burden on society, making it a fundamental problem in clinical medicine. Various steps are needed to promote regeneration of the peripheral nerve. As a bioremediation material, self-assembled peptide (SAP) hydrogels have attracted international attention. They can not only be designed with different characteristics but also be applied in the repair of peripheral nerve injury by promoting cell proliferation or drug-loaded sustained release. SAP hydrogels are widely used in tissue engineering and have become the focus of research. They have extensive application prospects and are of great potential biological value. In this paper, the application of SAP hydrogel in peripheral nerve injury repair is reviewed, and the latest progress in peptide composites and fabrication techniques are discussed.
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Affiliation(s)
- Meng Zhang
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China;
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Center for Trauma Medicine, Beijing 100044, China
| | - Lei Li
- Department of Orthopaedics, Qilu Hospital of Shandong University, Jinan 250012, China;
| | - Heng An
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry & Biological Engineering, University of Science & Technology Beijing, Beijing 100044, China;
| | - Peixun Zhang
- Department of Orthopedics and Trauma, Peking University People’s Hospital, Beijing 100044, China;
- Key Laboratory of Trauma and Neural Regeneration, Peking University, Beijing 100044, China
- National Center for Trauma Medicine, Beijing 100044, China
| | - Peilai Liu
- Department of Orthopaedics, Qilu Hospital of Shandong University, Jinan 250012, China;
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22
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Rozhin P, Charitidis C, Marchesan S. Self-Assembling Peptides and Carbon Nanomaterials Join Forces for Innovative Biomedical Applications. Molecules 2021; 26:4084. [PMID: 34279424 PMCID: PMC8271590 DOI: 10.3390/molecules26134084] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 02/07/2023] Open
Abstract
Self-assembling peptides and carbon nanomaterials have attracted great interest for their respective potential to bring innovation in the biomedical field. Combination of these two types of building blocks is not trivial in light of their very different physico-chemical properties, yet great progress has been made over the years at the interface between these two research areas. This concise review will analyze the latest developments at the forefront of research that combines self-assembling peptides with carbon nanostructures for biological use. Applications span from tissue regeneration, to biosensing and imaging, and bioelectronics.
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Affiliation(s)
- Petr Rozhin
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy;
| | - Costas Charitidis
- School of Chemical Engineering, National Technical University of Athens, Iroon Polytechneiou 9, Zografou, 157 80 Athens, Greece;
| | - Silvia Marchesan
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy;
- INSTM, Unit of Trieste, 34127 Trieste, Italy
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