1
|
Leri M, Sun D, Svedružic ŽM, Šulskis D, Smirnovas V, Stefani M, Morozova-Roche L, Bucciantini M. Pro-inflammatory protein S100A9 targeted by a natural molecule to prevent neurodegeneration onset. Int J Biol Macromol 2024; 276:133838. [PMID: 39002917 DOI: 10.1016/j.ijbiomac.2024.133838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 07/08/2024] [Accepted: 07/11/2024] [Indexed: 07/15/2024]
Abstract
Accumulation of the pro-inflammatory protein S100A9 has been implicated in neuroinflammatory cascades in neurodegenerative diseases (NDs) such as Alzheimer's disease (AD) and Parkinson's disease (PD). S100A9 co-aggregates with other proteins such as α-synuclein in PD and Aβ in AD, contributing to amyloid plaque formation and neurotoxicity. The amyloidogenic nature of this protein and its role in chronic neuroinflammation suggest that it may play a key role in the pathophysiology of these diseases. Research into molecules targeting S100A9 could be a potential therapeutic strategy to prevent its amyloidogenic self-assembly and to attenuate the neuroinflammatory response in affected brain tissue. This work suggests that bioactive natural molecules, such as those found in the Mediterranean diet, may have the potential to alleviate neuroinflammation associated with the accumulation of proteins such as S100A9 in neurodegenerative diseases. A major component of extra virgin olive oil (EVOO), hydroxytyrosol (HT), with its ability to interact with and modulate S100A9 amyloid self-assembly and expression, offers a compelling approach for the development of novel and effective interventions for the prevention and treatment of ND. The findings highlight the importance of exploring natural compounds, such as HT, as potential therapeutic options for these complex and challenging neurological conditions.
Collapse
Affiliation(s)
- Manuela Leri
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale Morgagni 50, 50134 Florence, Italy
| | - Dan Sun
- Department of Medical Biochemistry and Biophysics, Umeå University, 90187 Umeå, Sweden; State Key Laboratory of Photon-Technology in Western China Energy, Institute of Photonics and Photon-Technology, Northwest University, 710127 Xi'an, China
| | - Željko M Svedružic
- Department of Biotechnology, University of Rijeka, HR-51000 Rijeka, Croatia
| | - Darius Šulskis
- Institute of Biotechnology, Life Sciences Center, Vilnius University, LT-10257 Vilnius, Lithuania
| | - Vytautas Smirnovas
- Institute of Biotechnology, Life Sciences Center, Vilnius University, LT-10257 Vilnius, Lithuania
| | - Massimo Stefani
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale Morgagni 50, 50134 Florence, Italy
| | | | - Monica Bucciantini
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale Morgagni 50, 50134 Florence, Italy.
| |
Collapse
|
2
|
Wathudura P, McEachin J, Zhang D. Insights into Spectral Distortion and Nonlinearity in UV-Vis and Fluorescence Spectroscopy of Molecular Fluorophore Solutions: Effects of Cascading Optical Processes (Part IV). Anal Chem 2024; 96:13542-13550. [PMID: 39101903 DOI: 10.1021/acs.analchem.4c02173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
Reproducibility and linearity are crucial benchmarks for any measurement technology. However, UV-vis and fluorescence spectral distortion and nonlinearity are prevalent, even in seemingly simple fluorescent solutions that comprise only one dissolved molecular fluorophore, without exogenous absorbing or scattering species. In this report, we introduce an analytical model for the quantification of fluorescence interference on UV-vis measurements and a conceptual model for mechanistically understanding the impacts of higher-order cascading optical processes on fluorescence measurements. The experimental UV-vis transmittance can be dominated by interfering fluorescence, even for fluorophore solutions with theoretical absorbance values far below the instrument's linear dynamic range (LDR). Absorption-inner-filter-effect (aIFE) correction drastically improves the fluorescence LDR. However, the efficacy of aIFE correction hinges on two competing factors that strongly depend on the fluorophore's optical properties: the degree of fluorescence interference in UV-vis and the significance of secondary or higher-order emission triggered by fluorophore absorption of emitted photons. Our research sheds light on the remarkable complexity of cascading optical processes that can occur even in the simplest fluorescent solutions. It emphasizes the necessity of critically evaluating optical spectroscopic measurements of fluorescent solutions to improve the reliability of analyzing and interpreting optical spectra. Moreover, it lays the groundwork for future development of methods capable of handling challenging samples that exceed the capabilities of the current tools.
Collapse
Affiliation(s)
- Pathum Wathudura
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Joshua McEachin
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Dongmao Zhang
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| |
Collapse
|
3
|
Polańska O, Szulc N, Stottko R, Olek M, Nadwodna J, Gąsior-Głogowska M, Szefczyk M. Challenges in Peptide Solubilization - Amyloids Case Study. CHEM REC 2024; 24:e202400053. [PMID: 39023378 DOI: 10.1002/tcr.202400053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/23/2024] [Indexed: 07/20/2024]
Abstract
Peptide science has been a rapidly growing research field because of the enormous potential application of these biocompatible and bioactive molecules. However, many factors limit the widespread use of peptides in medicine, and low solubility is among the most common problems that hamper drug development in the early stages of research. Solubility is a crucial, albeit poorly understood, feature that determines peptide behavior. Several different solubility predictors have been proposed, and many strategies and protocols have been reported to dissolve peptides, but none of them is a one-size-fits-all method for solubilization of even the same peptide. In this review, we look for the reasons behind the difficulties in dissolving peptides, analyze the factors influencing peptide aggregation, conduct a critical analysis of solubilization strategies and protocols available in the literature, and give some tips on how to deal with the so-called difficult sequences. We focus on amyloids, which are particularly difficult to dissolve and handle such as amyloid beta (Aβ), insulin, and phenol-soluble modulins (PSMs).
Collapse
Affiliation(s)
- Oliwia Polańska
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Natalia Szulc
- Department of Physics and Biophysics, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375, Wrocław, Poland
| | - Rafał Stottko
- Faculty of Chemistry, Wrocław University of Science and Technology, Gdanska 7/9, 50-344, Wrocław, Poland
| | - Mateusz Olek
- Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Traugutta 2, 41-800 Zabrze, Poland
| | - Julita Nadwodna
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Marlena Gąsior-Głogowska
- Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Monika Szefczyk
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland
| |
Collapse
|
4
|
Fu H, Li J, Zhang C, Du P, Gao G, Ge Q, Guan X, Cui D. Aβ-Aggregation-Generated Blue Autofluorescence Illuminates Senile Plaques as well as Complex Blood and Vascular Pathologies in Alzheimer's Disease. Neurosci Bull 2024; 40:1115-1126. [PMID: 38345691 PMCID: PMC11306447 DOI: 10.1007/s12264-023-01175-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/02/2023] [Indexed: 08/09/2024] Open
Abstract
Senile plaque blue autofluorescence was discovered around 40 years ago, however, its impact on Alzheimer's disease (AD) pathology has not been fully examined. We analyzed senile plaques with immunohistochemistry and fluorescence imaging on AD brain sections and also Aβ aggregation in vitro. In DAPI or Hoechst staining, the nuclear blue fluorescence could only be correctly assigned after subtracting the blue plaque autofluorescence. The flower-like structures wrapping dense-core blue fluorescence formed by cathepsin D staining could not be considered central-nucleated neurons with defective lysosomes since there was no nuclear staining in the plaque core when the blue autofluorescence was subtracted. Both Aβ self-oligomers and Aβ/hemoglobin heterocomplexes generated blue autofluorescence. The Aβ amyloid blue autofluorescence not only labels senile plaques but also illustrates red cell aggregation, hemolysis, cerebral amyloid angiopathy, vascular plaques, vascular adhesions, and microaneurysms. In summary, we conclude that Aβ-aggregation-generated blue autofluorescence is an excellent multi-amyloidosis marker in Alzheimer's disease.
Collapse
Affiliation(s)
- Hualin Fu
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
- Institute of Marine Equipment, Shanghai Jiao Tong University, Shanghai, 200240, China.
- National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Jilong Li
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chunlei Zhang
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Peng Du
- Department of Colorectal Surgery, School of Medicine, Xinhua Hospital, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Guo Gao
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qiqi Ge
- Institute of Marine Equipment, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Automation, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xinping Guan
- Department of Automation, Shanghai Jiao Tong University, Shanghai, 200240, China
- The Key Laboratory of System Control and Information Processing, Ministry of Education, Shanghai, 200240, China
| | - Daxiang Cui
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| |
Collapse
|
5
|
Pirovano V, Brini P, Brambilla E, Gelmi ML, Romanelli A. Au(I) complexes installed on a self-assembled peptide efficiently catalyze intramolecular cyclization reactions. J Pept Sci 2024:e3630. [PMID: 38943521 DOI: 10.1002/psc.3630] [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: 04/08/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 07/01/2024]
Abstract
Self-assembled peptides are used for diverse applications in the biomedical and technological fields. The morphology and function of the assembled systems are dictated by the peptide sequence and length. In this work, a supramolecular catalyst was obtained upon self-assembly of the diphenylalanine peptide conjugated to a triphenylphosphine Au(I) complex in acetonitrile. The assembled molecules were characterized by spectroscopic techniques and by scanning electron microscopy. The activity of the catalyst was tested on two substrates in cyclization reactions. The morphology and the dimensions of the assembled systems vary depending on the presence of a carboxyl versus an amide C-terminal end. The catalyst efficiently promotes intramolecular cyclization reactions. Results obtained encourage the use of self-assembled peptides for the obtainment of new and efficient catalysts.
Collapse
Affiliation(s)
- Valentina Pirovano
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milan, Italy
| | - Patrizia Brini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milan, Italy
| | - Elisa Brambilla
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milan, Italy
| | - Maria Luisa Gelmi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milan, Italy
| | - Alessandra Romanelli
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milan, Italy
| |
Collapse
|
6
|
Banerjee S. Methylglyoxal-induced modification of myoglobin: An insight into glycation mediated protein aggregation. VITAMINS AND HORMONES 2024; 125:31-46. [PMID: 38997168 DOI: 10.1016/bs.vh.2024.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Post-translational modification of proteins by Maillard reaction, known as glycation, is thought to be the root cause of different complications, particularly in diabetes mellitus and age-related disorders. Methylglyoxal (MG), a reactive α-oxoaldehyde, increases in diabetic condition and reacts with the proteins to form advanced glycation end products (AGEs) following a Maillard-like reaction. In a time-dependent reaction study of MG with the heme protein myoglobin (Mb), MG was found to induce significant structural alterations of the heme protein, such as heme loss, changes in tryptophan fluorescence, and decrease of α-helicity with increased β-sheet content. These changes were found to occur gradually with increasing period of incubation. Incubation of Mb with MG induced the formation of several AGE adducts, including, carboxyethyllysine at Lys-16, carboxymethyllysine at Lys-87, carboxyethyllysine or pyrraline-carboxymethyllysine at Lys-133, carboxyethyllysine at Lys-42 and hydroimidazolone or argpyrimidine at Arg-31 and Arg-139. MG induced amyloid-like aggregation of Mb was detected at a longer period of incubation. MG-derived AGEs, therefore, appear to have an important role as the precursors of protein aggregation, which, in turn, may be associated with pathophysiological complications.
Collapse
|
7
|
Alom SE, Swaminathan K, Nuzelu V, Singh A, de Rocquigny H, Swaminathan R. Label-Free Tracking of Hepatitis B Virus Core Protein Capsid Assembly in Real-Time Using Protein Charge Transfer Spectra. Biomacromolecules 2024. [PMID: 38900297 DOI: 10.1021/acs.biomac.4c00521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Hepatitis B virions are double-shelled particles, with a diameter of 40-42 nm, consisting of a nucleocapsid called the HBV core protein (HBV Cp). It is an ordered assembly of 90-120 homodimers arranged in an icosahedral symmetry. Both the full-length HBV Cp and the first-149 residue domain, HBV Cp149, can spontaneously assemble in vitro into capsids with 120 Cp dimers (T = 4) or 90 Cp dimers (T = 3), triggered by high ionic strength of 0.25-0.5 M NaCl. The assembly disassembly of HBV Cp149 capsids are generally studied by light scattering, size-exclusion chromatography, atomic force microscopy, transmission electron microscopy, and other high-end expensive techniques. Here, we report a simple, yet robust, label-free technique exploiting protein charge transfer spectra (ProCharTS) to monitor the capsid assembly in real-time. ProCharTS absorption in the near UV-visible region (250-800 nm) arises when photoinduced electron transfer occurs from HOMO of COO- in glutamate (donor) to LUMO of NH3+ in lysine or polypeptide backbone (acceptor) of the protein. Alternatively, it can also occur from polypeptide backbone (donor) to acceptor in arginine, histidine, or lysine cation. ProCharTS is observed profusely among proximal charge clusters in folded proteins. Here, we show that, ProCharTS absorption among growing HBV capsids is amplified when HBV Cp homodimers assemble, generating new contacts among charged residues in the dimer-dimer interface. We notice a time-dependent sigmoidal increase in ProCharTS absorbance and luminescence during capsid formation in comparison to pure dimers. Additionally, a combined approach of anisotropy-based fluorescence assay is reported, where an increased fluorescence anisotropy was observed in capsids as compared to native and unfolded dimers. We conclude that ProCharTS can serve as a sensitive label-free tool for rapid tracking of capsid assembly in real-time and characterize the assembled capsids from dimers.
Collapse
Affiliation(s)
- Shah Ekramul Alom
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Karthik Swaminathan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - V Nuzelu
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Alka Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Hugues de Rocquigny
- Morphogenesis and Antigenicity of HIV, Hepatitis and Emerging Viruses MAVIVIHe, Inserm─U1259 MAVIVH, Tours 37032, France
| | - Rajaram Swaminathan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| |
Collapse
|
8
|
Monti A, Scognamiglio PL, Ruvo M, Vitagliano L, Doti N. The Characterization of Multifaceted PREP1 Peptides Provides Insights into Correlations between Spectroscopic and Structural Properties of Amyloid-like Assemblies. Chemistry 2024; 30:e202400846. [PMID: 38682403 DOI: 10.1002/chem.202400846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
The widespread ability of proteins and peptides to self-assemble by forming cross-β structure is one of the most significant discoveries in structural biology. Intriguingly, the cross-β association of proteins/peptides may generate intricate supramolecular architectures with uncommon spectroscopic properties. We have recently characterized self-assembled peptides extracted from the PREP1 protein that are endowed with interesting structural/spectroscopic properties. We here demonstrate that the green fluorescence emission of the peptide PREP1[117-132] (λem ~520 nm), can be induced by excitation with UV radiation. The associated unusually large Stokes shift (Δλ ~150 nm) represents, to the best of our knowledge, the first evidence of an internal resonance energy transfer in amyloid-like structures, where the blue emission of some assemblies becomes the excitation radiation for others. Moreover, the characterization of PREP1[117-132] variants provides insights into the sequence/structure and structure/spectroscopic properties relationships. Our data suggests that the green fluorescence is plausibly associated with antiparallel β-sheet states of the peptide whereas parallel β-sheet assemblies are only endowed with blue fluorescence. Notably, the different PREP1[117-132] variants also form assemblies characterized by distinct morphologies. Indeed, the parent peptide and single mutants form compact but structured aggregates whereas most of the double mutants exhibit elongated and highly extended fibers.
Collapse
Affiliation(s)
- Alessandra Monti
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via P. Castellino 111, 80131, Napoli, Italy
| | - Pasqualina Liana Scognamiglio
- Department of Sciences, University of Basilicata, Macchia Romana Campus 10, Viale dell'Ateneo Lucano, 85100, Potenza, Italy
| | - Menotti Ruvo
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via P. Castellino 111, 80131, Napoli, Italy
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via P. Castellino 111, 80131, Napoli, Italy
| | - Nunzianna Doti
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via P. Castellino 111, 80131, Napoli, Italy
| |
Collapse
|
9
|
Florio D, Luciano P, Di Natale C, Marasco D. The effects of histidine substitution of aromatic residues on the amyloidogenic properties of the fragment 264-277 of nucleophosmin 1. Bioorg Chem 2024; 147:107404. [PMID: 38678777 DOI: 10.1016/j.bioorg.2024.107404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/15/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
Histidine (His) plays a key role in mediating protein interactions and its unique side chain determines pH responsive self-assembling processes and thus in the formation of nanostructures. In this study, To identify novel self-assembling bioinspired sequences, we analyzed a series of peptide sequences obtained through the point mutation of aromatic residues of 264-277 fragment of nucleophosmin 1 (NPM1) with single and double histidines. Through several orthogonal biophysical techniques and under different pH and ionic strength conditions we evaluated the effects of these substitutions in the amyloidogenic features of derived peptides. The results clearly indicate that both the type of aromatic mutated residue and its position can have different effect on amyloid-like behaviors. They corroborate the crucial role exerted by Tyr271 in the self-assembling process of CTD of NPM1 in AML mutated form and add novel insights in the accurate investigation of how side chain orientations can determine successful design of innovative bioinspired materials.
Collapse
Affiliation(s)
- Daniele Florio
- Department of Pharmacy, University of Naples "Federico II", 80131 Naples, Italy
| | - Paolo Luciano
- Department of Pharmacy, University of Naples "Federico II", 80131 Naples, Italy
| | - Concetta Di Natale
- Department of Ingegneria Chimica, dei Materiali e della Produzione Industriale (DICMAPI), Italy
| | - Daniela Marasco
- Department of Pharmacy, University of Naples "Federico II", 80131 Naples, Italy.
| |
Collapse
|
10
|
Mignon J, Leyder T, Mottet D, Uversky VN, Michaux C. In-depth investigation of the effect of pH on the autofluorescence properties of DPF3b and DPF3a amyloid fibrils. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 313:124156. [PMID: 38508075 DOI: 10.1016/j.saa.2024.124156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/10/2024] [Accepted: 03/12/2024] [Indexed: 03/22/2024]
Abstract
Double PHD fingers 3 (DPF3) protein exists as two splicing variants, DPF3b and DPF3a, the involvement of which in human cancer and neurodegeneration is beginning to be increasingly recognised. Both isoforms have recently been identified as intrinsically disordered proteins able to undergo amyloid fibrillation. Upon their aggregation, DPF3 proteins exhibit an intrinsic fluorescence in the visible range, referred to as deep-blue autofluorescence (dbAF). Comprehension of such phenomenon remaining elusive, we investigated in the present study the influence of pH on the optical properties of DPF3b and DPF3a fibrils. By varying the excitation wavelength and the pH condition, the two isoforms were revealed to display several autofluorescence modes that were defined as violet, deep-blue, and blue-green according to their emission range. Complementarily, analysis of excitation spectra and red edge shift plots allowed to better decipher their photoselection mechanism and to highlight isoform-specific excitation-emission features. Furthermore, the observed violation to Kasha-Vavilov's rule was attributed to red edge excitation shift effects, which were impacted by pH-mediated H-bond disruption, leading to changes in intramolecular charge and proton transfer, or π-electrons delocalisation. Finally, emergence of different autofluorescence emitters was likely related to structurally distinct fibrillar assemblies between isoforms, as well as to discrepancies in the amino acid composition of their aggregation prone regions.
Collapse
Affiliation(s)
- Julien Mignon
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium; Namur Institute of Structured Matter (NISM), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium; Namur Research Institute for Life Sciences (NARILIS), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Tanguy Leyder
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Denis Mottet
- Gene Expression and Cancer Laboratory, GIGA-Molecular Biology of Diseases, University of Liège, B34, Avenue de l'Hôpital, 4000 Liège, Belgium.
| | - Vladimir N Uversky
- Department of Molecular Medicine, USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.
| | - Catherine Michaux
- Laboratoire de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium; Namur Institute of Structured Matter (NISM), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium; Namur Research Institute for Life Sciences (NARILIS), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| |
Collapse
|
11
|
Nabi Afjadi M, Aziziyan F, Farzam F, Dabirmanesh B. Biotechnological applications of amyloid fibrils. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2024; 206:435-472. [PMID: 38811087 DOI: 10.1016/bs.pmbts.2024.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Protein aggregates and amyloid fibrils have special qualities and are used in a variety of biotechnological applications. They are extensively employed in bioremediation, biomaterials, and biocatalysis. Because of their capacity to encapsulate and release pharmaceuticals and their sensitivity to certain molecules, respectively, they are also used in drug delivery and biosensor applications. They have also demonstrated potential in the domains of food and bioremediation. Additionally, amyloid peptides have drawn interest in biological applications, especially in the investigation of illnesses like Parkinson's and Alzheimer's. The unique characteristics of amyloid fibrils, namely their mechanical strength and β-sheet structure, make them adaptable to a wide range of biotechnological uses. Even with their promise, one important factor to keep in mind before widely using modified amyloid materials is their potential toxicity. Thus, current research aims to overcome safety concerns while maximizing their potential.
Collapse
Affiliation(s)
- Mohsen Nabi Afjadi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Aziziyan
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Farnoosh Farzam
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Bahareh Dabirmanesh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
| |
Collapse
|
12
|
Alom SE, Kalita S, Kawa AH, Mandal B, Swaminathan R. Early events during the aggregation of Aβ 16-22-derived switch-peptides tracked using Protein Charge Transfer Spectra. Anal Chim Acta 2024; 1297:342374. [PMID: 38438229 DOI: 10.1016/j.aca.2024.342374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 01/21/2024] [Accepted: 02/13/2024] [Indexed: 03/06/2024]
Abstract
BACKGROUND Understanding Aβ aggregation and inhibiting it at early stages is of utmost importance in treating Alzheimer's and other related amyloidogenic diseases. However, majority of the techniques to study Aβ aggregation mainly target the late stages; while those used to monitor early stages are either expensive, use extrinsic dyes, or do not provide information on molecular level interactions. Here, we investigate the early events of Aβ16-22(KLVFFAE) aggregation using Aβ16-22 derived switch-peptides (SwPs) through a novel label-free approach employing Protein Charge Transfer Spectra (ProCharTS). RESULTS When pH is increased from 2 to 7.2, the Aβ-derived switch peptides undergo controlled self-assembly, where the initial random coil peptides convert into β-sheet. We leveraged the intrinsic absorbance/luminescence arising from ProCharTS among growing peptide oligomers to observe the aggregation kinetics in real-time. In comparison to monomer, the lysine and glutamate headgroups in the peptide oligomer are expected to come in proximity enhancing ProCharTS intensity due to photoinduced electron transfer. With a combination of Aβ-derived switch-peptides and ProCharTS, we obtained structural insights on the early stages of Aβ-derived SwP aggregation in four unique peptides. Increase in scatter corrected ProCharTS absorbance (250-500 nm) and luminescence (320-720 nm) along with decreased mean luminescence lifetime (2.3-0.8 ns) characterize the initial stages of aggregation monitored for 1-96 h depending on the peptide. We correlated the results with Circular Dichroism (CD), 8-anilino-1-naphthalenesulfonic acid (ANS) and Thioflavin T (ThT) measurements. SIGNIFICANCE We demonstrate ProCharTS as an intrinsic analytical probe with following advantages over other conventional methods to track aggregation: it is a label-free probe; it's intensity can be measured using a UV-Vis spectrophotometer; it is more sensitive in detecting the early molecular events in aggregation compared to ANS and ThT; and it can provide information on specific contacts made between charged headgroups of Lysine/Glutamate in the oligomer.
Collapse
Affiliation(s)
- Shah Ekramul Alom
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Sourav Kalita
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Altaf Hussain Kawa
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Bhubaneswar Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Rajaram Swaminathan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
| |
Collapse
|
13
|
Balczon R, Lin MT, Voth S, Nelson AR, Schupp JC, Wagener BM, Pittet JF, Stevens T. Lung endothelium, tau, and amyloids in health and disease. Physiol Rev 2024; 104:533-587. [PMID: 37561137 PMCID: PMC11281824 DOI: 10.1152/physrev.00006.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/26/2023] [Accepted: 08/04/2023] [Indexed: 08/11/2023] Open
Abstract
Lung endothelia in the arteries, capillaries, and veins are heterogeneous in structure and function. Lung capillaries in particular represent a unique vascular niche, with a thin yet highly restrictive alveolar-capillary barrier that optimizes gas exchange. Capillary endothelium surveys the blood while simultaneously interpreting cues initiated within the alveolus and communicated via immediately adjacent type I and type II epithelial cells, fibroblasts, and pericytes. This cell-cell communication is necessary to coordinate the immune response to lower respiratory tract infection. Recent discoveries identify an important role for the microtubule-associated protein tau that is expressed in lung capillary endothelia in the host-pathogen interaction. This endothelial tau stabilizes microtubules necessary for barrier integrity, yet infection drives production of cytotoxic tau variants that are released into the airways and circulation, where they contribute to end-organ dysfunction. Similarly, beta-amyloid is produced during infection. Beta-amyloid has antimicrobial activity, but during infection it can acquire cytotoxic activity that is deleterious to the host. The production and function of these cytotoxic tau and amyloid variants are the subject of this review. Lung-derived cytotoxic tau and amyloid variants are a recently discovered mechanism of end-organ dysfunction, including neurocognitive dysfunction, during and in the aftermath of infection.
Collapse
Affiliation(s)
- Ron Balczon
- Department of Biochemistry and Molecular Biology, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| | - Mike T Lin
- Department of Physiology and Cell Biology, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| | - Sarah Voth
- Department of Cell Biology and Physiology, Edward Via College of Osteopathic Medicine, Monroe, Louisiana, United States
| | - Amy R Nelson
- Department of Physiology and Cell Biology, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| | - Jonas C Schupp
- Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University, New Haven, Connecticut, United States
- Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
- German Center for Lung Research (DZL), Hannover, Germany
| | - Brant M Wagener
- Department of Anesthesiology and Perioperative Medicine, University of Alabama-Birmingham, Birmingham, Alabama, United States
| | - Jean-Francois Pittet
- Department of Anesthesiology and Perioperative Medicine, University of Alabama-Birmingham, Birmingham, Alabama, United States
| | - Troy Stevens
- Department of Physiology and Cell Biology, University of South Alabama, Mobile, Alabama, United States
- Department of Internal Medicine, University of South Alabama, Mobile, Alabama, United States
- Center for Lung Biology, University of South Alabama, Mobile, Alabama, United States
| |
Collapse
|
14
|
Rosenbaum P, Barhom H, Inberg A, Lapsker I, Rosenman G, Apter B. Hidden imaging in thin polymer films with embedded fluorescent peptide nanodots. OPTICS EXPRESS 2024; 32:4485-4497. [PMID: 38297649 DOI: 10.1364/oe.511152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/07/2024] [Indexed: 02/02/2024]
Abstract
Fluorescent (FL) encrypting nanostructures, such as quantum dots, carbon dots, organic dyes, lanthanide nanocrystals, DNA, and more, are effective tools for advanced applications in high-resolution hidden imaging. These applications include tracking, labeling, security printing, and anti-counterfeiting drug technology. In this work, what we believe to be a new FL encoding nanostructures has been proposed, which consists of recently discovered nanometer-scale peptide dots. When refolded into a beta-sheet peptide secondary structure, these biocompatible nanoparticles exhibit a strong and tunable FL effect. The biophotonic FL covers the entire visible spectrum, making the peptide dots next-generation nanoscale light sources with a quantum yield of 30%. Our studies demonstrate that these FL bio-nanodots also exhibit a significant irreversible photo-bleaching effect associated with the light-induced destruction of noncovalent intermolecular hydrogen bonds of the peptide dots' highly stable beta-sheet secondary structure. We present what we believe is a new approach for achieving high-resolution long-term optical memory by tailoring various hidden images in the developed thin polyvinyl alcohol (PVA) polymer films with an embedded dense array of FL peptide nanodots. The technology enables recording photo-bleached patterns, barcodes, and high-resolution images.
Collapse
|
15
|
Bao J, Tong C, He M, Zhang H. Luminescent polypeptides. LUMINESCENCE 2024; 39:e4594. [PMID: 37712500 DOI: 10.1002/bio.4594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/29/2023] [Accepted: 09/13/2023] [Indexed: 09/16/2023]
Abstract
Polypeptides, as biomacromolecules, hold immense potential in various biological applications such as tissue engineering, immunomodulating agents, and target binding. Among these applications, the attention towards luminescent polypeptides has grown significantly, due to their ability to visualize biological processes effectively. In this perspective, we have compiled information on three distinct types of luminescent polypeptides: natural fluorescent proteins, luminophores-bioconjugated polypeptides, and synthesized polypeptides with clusteroluminescence. Last, we shed light on the significance and prospects of clusteroluminescent polypeptides, which are expected to emerge as crucial new-generation bioluminophores, offering high emission efficiency and tunable emission wavelengths.
Collapse
Affiliation(s)
- Jieyu Bao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Chuanye Tong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Mengxuan He
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Haoke Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
- Centre of Healthcare Materials, Shaoxing Institute, Zhejiang University, Shaoxing, China
| |
Collapse
|
16
|
Xu H, Luo Z, Zhang R, Golovynska I, Huang Y, Samanta S, Zhou T, Li S, Guo B, Liu L, Weng X, He J, Liao C, Wang Y, Ohulchanskyy TY, Qu J. Exploring the effect of photobiomodulation and gamma visual stimulation induced by 808 nm and visible LED in Alzheimer's disease mouse model. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 250:112816. [PMID: 38029664 DOI: 10.1016/j.jphotobiol.2023.112816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 11/08/2023] [Accepted: 11/20/2023] [Indexed: 12/01/2023]
Abstract
Although photobiomodulation (PBM) and gamma visual stimulatqion (GVS) have been overwhelmingly explored in the recent time as a possible light stimulation (LS) means of Alzheimer's disease (AD) therapy, their effects have not been assessed at once. In our research, the AD mouse model was stimulated using light with various parameters [continuous wave (PBM) or 40 Hz pulsed visible LED (GVS) or 40 Hz pulsed 808 nm LED (PBM and GVS treatment)]]. The brain slices collected from the LS treated AD model mice were evaluated using (i) fluorescence microscopy to image thioflavine-S labeled amy-loid-β (Aβ) plaques (the main hallmark of AD), or (ii) two-photon excited fluorescence (TPEF) imaging of unlabeled Aβ plaques, showing that the amount of Aβ plaques was reduced after LS treatment. The imaging results correlated well with the results of Morris water maze (MWM) test, which demonstrated that the spatial learning and memory abilities of LS treated mice were noticeably higher than those of untreated mice. The LS effect was also assessed by in vivo nonlinear optical imaging, revealing that the cerebral amyloid angiopathy decreased spe-cifically as a result of 40 Hz pulsed 808 nm irradiation, on the contrary, the angiopathy reversed after visible 40 Hz pulsed light treatment. The obtained results provide useful reference for further optimization of the LS (PBM or GVS) parameters to achieve efficient phototherapy of AD.
Collapse
Affiliation(s)
- Hao Xu
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Ziyi Luo
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Renlong Zhang
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Iuliia Golovynska
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Yanxia Huang
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Soham Samanta
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Ting Zhou
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Shaowei Li
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Bingang Guo
- HOLOKOOK Co. LtD, Shenzhen 518060, Guangdong Province, P.R. China
| | - Liwei Liu
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Xiaoyu Weng
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Jun He
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Changrui Liao
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Yiping Wang
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China
| | - Tymish Y Ohulchanskyy
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China.
| | - Junle Qu
- Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R. China; Engineering Research Center of Optical Instrument and System, Ministry of Education, Shanghai Key Lab of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P.R. China.
| |
Collapse
|
17
|
do Amaral MJ, Mohapatra S, Passos AR, Lopes da Silva TS, Carvalho RS, da Silva Almeida M, Pinheiro AS, Wegmann S, Cordeiro Y. Copper drives prion protein phase separation and modulates aggregation. SCIENCE ADVANCES 2023; 9:eadi7347. [PMID: 37922348 PMCID: PMC10624353 DOI: 10.1126/sciadv.adi7347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/03/2023] [Indexed: 11/05/2023]
Abstract
Prion diseases are characterized by prion protein (PrP) transmissible aggregation and neurodegeneration, which has been linked to oxidative stress. The physiological function of PrP seems related to sequestering of redox-active Cu2+, and Cu2+ dyshomeostasis is observed in prion disease brain. It is unclear whether Cu2+ contributes to PrP aggregation, recently shown to be mediated by PrP condensation. This study indicates that Cu2+ promotes PrP condensation in live cells at the cell surface and in vitro through copartitioning. Molecularly, Cu2+ inhibited PrP β-structure and hydrophobic residues exposure. Oxidation, induced by H2O2, triggered liquid-to-solid transition of PrP:Cu2+ condensates and promoted amyloid-like PrP aggregation. In cells, overexpression of PrPC initially protected against Cu2+ cytotoxicity but led to PrPC aggregation upon extended copper exposure. Our data suggest that PrP condensates function as a buffer for copper that prevents copper toxicity but can transition into PrP aggregation at prolonged oxidative stress.
Collapse
Affiliation(s)
- Mariana Juliani do Amaral
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
| | | | - Aline Ribeiro Passos
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP, Brazil
| | | | | | - Marcius da Silva Almeida
- Plataforma Avançada de Biomoléculas, Centro Nacional de Biologia Estrutural e Bioimagem, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Anderson Sá Pinheiro
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Susanne Wegmann
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
| | - Yraima Cordeiro
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
18
|
Deng D, Chang Y, Liu W, Ren M, Xia N, Hao Y. Advancements in Biosensors Based on the Assembles of Small Organic Molecules and Peptides. BIOSENSORS 2023; 13:773. [PMID: 37622859 PMCID: PMC10452798 DOI: 10.3390/bios13080773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/21/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023]
Abstract
Over the past few decades, molecular self-assembly has witnessed tremendous progress in a variety of biosensing and biomedical applications. In particular, self-assembled nanostructures of small organic molecules and peptides with intriguing characteristics (e.g., structure tailoring, facile processability, and excellent biocompatibility) have shown outstanding potential in the development of various biosensors. In this review, we introduced the unique properties of self-assembled nanostructures with small organic molecules and peptides for biosensing applications. We first discussed the applications of such nanostructures in electrochemical biosensors as electrode supports for enzymes and cells and as signal labels with a large number of electroactive units for signal amplification. Secondly, the utilization of fluorescent nanomaterials by self-assembled dyes or peptides was introduced. Thereinto, typical examples based on target-responsive aggregation-induced emission and decomposition-induced fluorescent enhancement were discussed. Finally, the applications of self-assembled nanomaterials in the colorimetric assays were summarized. We also briefly addressed the challenges and future prospects of biosensors based on self-assembled nanostructures.
Collapse
Affiliation(s)
- Dehua Deng
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yong Chang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Wenjing Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Mingwei Ren
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Ning Xia
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yuanqiang Hao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| |
Collapse
|
19
|
Yang Y, Gao Z, Yang D. pH-dependent self-assembly mechanism of a single repetitive domain from a spider silk protein. Int J Biol Macromol 2023; 242:124775. [PMID: 37169045 DOI: 10.1016/j.ijbiomac.2023.124775] [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: 01/26/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
Spider silk is self-assembled from full-length silk proteins, and some silk protein fragments can also form silk-like fibers in vitro. However, the mechanism underlying the silk fiber formation is not understood well. In this study, we investigated the fiber formation of a single repetitive domain (RP) from a minor ampullate silk protein (MiSp). Our findings revealed that pH and salt concentration affect not only the stability of MiSp-RP but also its self-assembly into fibers and aggregates. Using nuclear magnetic resonance (NMR) spectroscopy, we solved the three-dimensional (3D) structure of MiSp RP in aqueous solution. On the basis of the structure and mutagenesis, we revealed that charge-dipole interactions are responsible for the pH- and salt-dependent properties of MiSp-RP. Our results indicate that fiber formation is regulated by a delicate balance between intermolecular and intramolecular interactions, rather than by the protein stability alone. These findings have implications for the design of silk proteins for mass production of spider silk.
Collapse
Affiliation(s)
- Yadi Yang
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore
| | - Zhenwei Gao
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore
| | - Daiwen Yang
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore.
| |
Collapse
|
20
|
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: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [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.
Collapse
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
| |
Collapse
|
21
|
Kamagata K, Hando A, Ariefai M, Iwaki N, Kanbayashi S, Koike R, Ikeda K. Rational design of phase separating peptides based on phase separating protein sequence of p53. Sci Rep 2023; 13:5648. [PMID: 37024567 PMCID: PMC10079954 DOI: 10.1038/s41598-023-32632-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/30/2023] [Indexed: 04/08/2023] Open
Abstract
Artificial phase-separating (PS) peptides can be used in various applications such as microreactors and drug delivery; however, the design of artificial PS peptides remains a challenge. This can be attributed to the limitation of PS-relevant residues that drive phase separation by interactions of their pairs in short peptides and the difficulty in the design involving interaction with target PS proteins. In this study, we propose a rational method to design artificial PS peptides that satisfy the requirements of liquid droplet formation and co-phase separation with target PS proteins based on the target PS protein sequence. As a proof of concept, we designed five artificial peptides from the model PS protein p53 using this method and confirmed their PS properties using differential interference contrast and fluorescence microscopy. Single-molecule fluorescent tracking demonstrated rapid diffusion of the designed peptides in their droplets compared to that of p53 in p53 droplets. In addition, size-dependent uptake of p53 oligomers was observed in the designed peptide droplets. Large oligomers were excluded from the droplet voids and localized on the droplet surface. The uptake of high-order p53 oligomers into the droplets was enhanced by the elongated linker of the designed peptides. Furthermore, we found that the designed peptide droplets recruited p53 to suppress gel-like aggregate formation. Finally, we discuss aspects that were crucial in the successful design of the artificial PS peptides.
Collapse
Affiliation(s)
- Kiyoto Kamagata
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan.
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8578, Japan.
- Department of Chemistry, Faculty of Science, Tohoku University, Sendai, 980-8578, Japan.
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan.
| | - Atsumi Hando
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8578, Japan
| | - Maulana Ariefai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
- Department of Chemistry, Faculty of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Nanako Iwaki
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Saori Kanbayashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
| | - Ryotaro Koike
- Graduate School of Informatics, Nagoya University, Nagoya, Aichi, 464-8601, Japan
| | - Keisuke Ikeda
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| |
Collapse
|
22
|
Sapra R, Gupta M, Khare K, Chowdhury PK, Haridas V. Fluorescence by self-assembly: autofluorescent peptide vesicles and fibers. Analyst 2023; 148:973-984. [PMID: 36756978 DOI: 10.1039/d3an00124e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A series of oxidized cysteinyl peptides ([P-Cys-X-OMe]2; P = Boc or H; X = Trp or Glu) showed vesicular and fibrillar assemblies. The anatomy of the self-assembled vesicles from the water-soluble cystine peptide [Cys-Trp-OMe]2 (1a) has been investigated by using various fluorescent probes such as ammonium 8-anilinonaphthalene-1-sulfonate, Nile Red and pyrene. The morphological characterization was carried out by fluorescence lifetime imaging microscopy (FLIM) and super resolution-structured illumination microscopy (SR-SIM) utilizing the autofluorescence of the vesicles stemming from the self-assembly. The self-assembled structures are also observed in solution as evident from the quantitative phase images obtained using a dual-mode digital holographic microscope (DHM) system. Present investigations show that the self-assembly is enthalpy- and entropy-driven in the aqueous medium. Based on the CD spectral studies, we proposed that 1a organizes into vesicles through the sequestration of indole units. We observed that the solutions of dipeptides 1a-b exhibit autofluorescence in the blue region upon excitation at a wavelength >350 nm. Detailed spectroscopic studies on the peptides lacking tryptophan 2a-b unequivocally showed that the autofluorescence stems exclusively from peptide aggregation. Our experimental results with appropriate controls revealed that the clustering of carbonyl chromophores is central to autofluorescence. Autofluorescence was also used to probe the vesicle formation without using any external fluorescent probe. To the best of our knowledge, this is the first report on autofluorescent vesicles formed by the spontaneous association of dipeptides. We also found that the vesicles formed by 1a can act as a host for guests like C60. The biocompatibility and biodegradability of these peptides along with the autofluorescent nature and guest binding ability of peptide-based vesicles offer numerous applications in the biomedical area.
Collapse
Affiliation(s)
- Rachit Sapra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Monika Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Kedar Khare
- Optics and Photonics Centre, Indian Institute of Technology Delhi, New Delhi-110016, India
| | - Pramit K Chowdhury
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - V Haridas
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| |
Collapse
|
23
|
Žganec M, Taler Verčič A, Muševič I, Škarabot M, Žerovnik E. Amyloid Fibrils of Stefin B Show Anisotropic Properties. Int J Mol Sci 2023; 24:ijms24043737. [PMID: 36835149 PMCID: PMC9962164 DOI: 10.3390/ijms24043737] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 01/30/2023] [Accepted: 02/11/2023] [Indexed: 02/16/2023] Open
Abstract
Human stefin B, a member of the cystatin family of cysteine protease inhibitors, tends to form amyloid fibrils under relatively mild conditions, which is why it is used as a model protein to study amyloid fibrillation. Here, we show for the first time that bundles of amyloid fibrils, i.e., helically twisted ribbons, formed by human stefin B exhibit birefringence. This physical property is commonly observed in amyloid fibrils when stained with Congo red. However, we show that the fibrils arrange in regular anisotropic arrays and no staining is required. They share this property with anisotropic protein crystals, structured protein arrays such as tubulin and myosin, and other anisotropic elongated materials, such as textile fibres and liquid crystals. In certain macroscopic arrangements of amyloid fibrils, not only birefringence is observed, but also enhanced emission of intrinsic fluorescence, implying a possibility to detect amyloid fibrils with no labels by using optical microscopy. In our case, no enhancement of intrinsic tyrosine fluorescence was observed at 303 nm; instead, an additional fluorescence emission peak appeared at 425 to 430 nm. We believe that both phenomena, birefringence and fluorescence emission in the deep blue, should be further explored with this and other amyloidogenic proteins. This may allow the development of label-free detection methods for amyloid fibrils of different origins.
Collapse
Affiliation(s)
- Matjaž Žganec
- Department of Biochemistry and Molecular and Structural Biology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
| | - Ajda Taler Verčič
- Department of Biochemistry and Molecular and Structural Biology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
- Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Igor Muševič
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
- Department of Condensed Matter Physics, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Miha Škarabot
- Department of Condensed Matter Physics, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Eva Žerovnik
- Department of Biochemistry and Molecular and Structural Biology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
- Correspondence:
| |
Collapse
|
24
|
Natarajan A, Rangan K, Vadrevu R. Self-assembly of a peptide sequence, EKKE, composed of exclusively charged amino acids: Role of charge in morphology and lead binding. J Pept Sci 2023; 29:e3451. [PMID: 36098076 DOI: 10.1002/psc.3451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/14/2022] [Accepted: 09/08/2022] [Indexed: 01/12/2023]
Abstract
The self-assembly of peptides is influenced by their amino acid sequence and other factors including pH, charge, temperature, and solvent. Herein, we explore whether a four-residue sequence, EKKE, consisting of exclusively charged amino acids shows the propensity to form self-assembled ordered nanostructures and whether the overall charge plays any role in morphological and functional properties. From a combination of experimental data provided by Thioflavin T fluorescence, Congo red absorbance, circular dichroism spectroscopy, dynamic light scattering, field emission-scanning electron microscopy, atomic force microscopy, and confocal microscopy, it is clear that the all-polar peptide and charged EKKE sequence shows a pH-dependent tendency to form amyloid-like structures, and the self-assembled entities under acidic, basic and neutral conditions exhibit morphological variation. Additionally, the ability of the self-assembled amyloid nanostructures to bind to the toxic metal, lead (Pb2+ ), was demonstrated from the analysis of the ultraviolet absorbance and X-ray photoelectron spectroscopy data. The modulation at the sequence level for the amyloid-forming EKKE scaffold can further extend its potential role not only in the remediation of other toxic metals but also towards biomedical applications.
Collapse
Affiliation(s)
- Aishwarya Natarajan
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
| | - Ramakrishna Vadrevu
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
| |
Collapse
|
25
|
Forlano N, Bucci R, Contini A, Venanzi M, Placidi E, Gelmi ML, Lettieri R, Gatto E. Non-Conventional Peptide Self-Assembly into a Conductive Supramolecular Rope. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13020333. [PMID: 36678086 PMCID: PMC9867255 DOI: 10.3390/nano13020333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 05/27/2023]
Abstract
Structures composed of alternating α and β amino acids can give rise to peculiar secondary structural motifs, which could self-assemble into complex structures of controlled geometries. This work describes the self-assembly properties of an α,β-peptide, containing three units of syn H2-(2-F-Phe)-h-PheGly-OH, able to self-organize on surfaces into a fascinating supramolecular rope. This material was characterized by AFM, electronic conduction and fluorescence measurements. Molecular dynamics simulations showed that this hexapeptide can self-assemble into an antiparallel β-sheet layer, stabilized by intermolecular H-bonds, which, in turn, can self-assemble into many side-by-side layers, due to π-π interactions. As a matter of fact, we demonstrated that in this system, the presence of aromatic residues at the intramolecular interface promoted by the alternation of α,β-amino-acids in the primary sequence, endorses the formation of a super-secondary structure where the aromatic groups are close to each other, conferring to the system good electron conduction properties. This work demonstrates the capability and future potential of designing and fabricating distinctive nanostructures and efficient bioelectronic interfaces based on an α,β-peptide, by controlling structure and interaction processes beyond those obtained with α- or β-peptides alone.
Collapse
Affiliation(s)
- Nicola Forlano
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Raffaella Bucci
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Alessandro Contini
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Mariano Venanzi
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Ernesto Placidi
- Department of Physics, Sapienza University of Rome, P.le Aldo Moro 2, 00185 Rome, Italy
| | - Maria Luisa Gelmi
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Raffaella Lettieri
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Emanuela Gatto
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| |
Collapse
|
26
|
Morzan UN, Díaz Mirón G, Grisanti L, González Lebrero MC, Kaminski Schierle GS, Hassanali A. Non-Aromatic Fluorescence in Biological Matter: The Exception or the Rule? J Phys Chem B 2022; 126:7203-7211. [PMID: 36128666 DOI: 10.1021/acs.jpcb.2c04280] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
While in the vast majority of cases fluorescence in biological matter has been attributed to aromatic or conjugated groups, peptides associated with neurodegenerative diseases, such as Alzheimer's, Parkinson's, or Huntington's, have been recently shown to display an intrinsic visible fluorescence even in the absence of aromatic residues. This has called the attention of researchers from many different fields, trying to understand the origin of this peculiar behavior and, at the same time, motivating the search for novel strategies to control the optical properties of new biophotonic materials. Today, after nearly 15 years of its discovery, there is a growing consensus about the mechanism underlying this phenomenon, namely, that electronic interactions between non-optically active molecules can result in supramolecular assemblies that are fluorescent. Despite this progress, many aspects of this phenomenon remain uncharted territory. In this Perspective, we lay down the state-of-the-art in the field highlighting the open questions from both experimental and theoretical fronts in this fascinating emerging area of non-aromatic fluorescence.
Collapse
Affiliation(s)
- Uriel N Morzan
- International Centre for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy
| | - Gonzalo Díaz Mirón
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
| | - Luca Grisanti
- Division of Theoretical Physics, Ruđer Bos̆cković Institute, Bijenic̆ka cesta 54, 10000 Zagreb, Croatia
| | - Mariano C González Lebrero
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
| | | | - Ali Hassanali
- International Centre for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy
| |
Collapse
|
27
|
Cossu FL, Poddighe M, Stagi L, Anedda R, Innocenzi P. The Born of Fluorescence from Thermally Polymerized Glycine. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Franca Lucia Cossu
- Laboratory of Materials Science and Nanotechnology CR‐INSTM Department of Biomedical Sciences University of Sassari Viale San Pietro 43/B Sassari 07100 Italy
| | - Matteo Poddighe
- Laboratory of Materials Science CR‐INSTM Department of Chemistry and Pharmacy University of Sassari Via Vienna 2 Sassari 07100 Italy
- Laboratory of Nanotechnology CR‐INSTM Department of Chemistry and Pharmacy University of Sassari Via Vienna 2 Sassari 07100 Italy
| | - Luigi Stagi
- Laboratory of Materials Science CR‐INSTM Department of Chemistry and Pharmacy University of Sassari Via Vienna 2 Sassari 07100 Italy
- Laboratory of Nanotechnology CR‐INSTM Department of Chemistry and Pharmacy University of Sassari Via Vienna 2 Sassari 07100 Italy
| | - Roberto Anedda
- Porto Conte Ricerche Strada Provinciale 55, Porto Conte Capo Caccia, km. 8,400 Alghero (SS) 07041 Italy
| | - Plinio Innocenzi
- Laboratory of Materials Science and Nanotechnology CR‐INSTM Department of Biomedical Sciences University of Sassari Viale San Pietro 43/B Sassari 07100 Italy
| |
Collapse
|
28
|
Chung CW, Stephens AD, Ward E, Feng Y, Davis MJ, Kaminski CF, Kaminski Schierle GS. Label-Free Characterization of Amyloids and Alpha-Synuclein Polymorphs by Exploiting Their Intrinsic Fluorescence Property. Anal Chem 2022; 94:5367-5374. [PMID: 35333515 PMCID: PMC8988127 DOI: 10.1021/acs.analchem.1c05651] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Conventional in vitro aggregation assays often involve tagging with extrinsic fluorophores, which can interfere with aggregation. We propose the use of intrinsic amyloid fluorescence lifetime probed using two-photon excitation and represented by model-free phasor plots as a label-free assay to characterize the amyloid structure. Intrinsic amyloid fluorescence arises from the structured packing of β-sheets in amyloids and is independent of aromatic-based fluorescence. We show that different amyloids [i.e., α-Synuclein (αS), β-Lactoglobulin (βLG), and TasA] and different polymorphic populations of αS (induced by aggregation in salt-free and salt buffers mimicking the intra-/extracellular environments) can be differentiated by their unique fluorescence lifetimes. Moreover, we observe that disaggregation of the preformed fibrils of αS and βLG leads to increased fluorescence lifetimes, distinct from those of their fibrillar counterparts. Our assay presents a medium-throughput method for rapid classification of amyloids and their polymorphs (the latter of which recent studies have shown lead to different disease pathologies) and for testing small-molecule inhibitory compounds.
Collapse
Affiliation(s)
- Chyi Wei Chung
- Department of Chemical Engineering and Biotechnology, Phillipa Fawcett Drive, University of Cambridge, Cambridge, CB3 0AS, U.K
| | - Amberley D Stephens
- Department of Chemical Engineering and Biotechnology, Phillipa Fawcett Drive, University of Cambridge, Cambridge, CB3 0AS, U.K
| | - Edward Ward
- Department of Chemical Engineering and Biotechnology, Phillipa Fawcett Drive, University of Cambridge, Cambridge, CB3 0AS, U.K
| | - Yuqing Feng
- Department of Chemical Engineering and Biotechnology, Phillipa Fawcett Drive, University of Cambridge, Cambridge, CB3 0AS, U.K
| | - Molly Jo Davis
- Department of Chemical Engineering and Biotechnology, Phillipa Fawcett Drive, University of Cambridge, Cambridge, CB3 0AS, U.K
| | - Clemens F Kaminski
- Department of Chemical Engineering and Biotechnology, Phillipa Fawcett Drive, University of Cambridge, Cambridge, CB3 0AS, U.K
| | - Gabriele S Kaminski Schierle
- Department of Chemical Engineering and Biotechnology, Phillipa Fawcett Drive, University of Cambridge, Cambridge, CB3 0AS, U.K
| |
Collapse
|
29
|
Sivagnanam S, Das K, Basak M, Mahata T, Stewart A, Maity B, Das P. Self-assembled dipeptide based fluorescent nanoparticles as a platform for developing cellular imaging probes and targeted drug delivery chaperones. NANOSCALE ADVANCES 2022; 4:1694-1706. [PMID: 36134376 PMCID: PMC9417502 DOI: 10.1039/d1na00885d] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/13/2022] [Indexed: 06/16/2023]
Abstract
Self-assembled peptide-based nanostructures, comprised of naturally occurring amino acids, display excellent biocompatibility, biodegradability, flexible responsiveness, and synthetic feasibility and can be customized for various biomedical applications. However, the lack of inherent optical properties of peptide-based nanoparticles is a limitation on their use as imaging probes or drug delivery vehicles. To overcome this impediment, we generated Boc protected tyrosine-tryptophan dipeptide-based nanoparticles (DPNPs) with structure rigidification by Zn(ii), which shifted the peptide's intrinsic fluorescent properties from the ultraviolet to the visible range. These DPNPs are photostable, biocompatible and have visible fluorescence signals that allow for real-time monitoring of their entry into cells. We further show that two DPNPs (PS1-Zn and PS2-Zn) can encapsulate the chemotherapeutic drug doxorubicin (Dox) and facilitate intracellular drug delivery resulting in cancer cell killing actions comparable to the unencapsulated drug. Finally, we chemically modified our DPNPs with an aptamer directed toward the epithelial cell surface marker EPCAM, which improved Dox delivery to the lung cancer epithelial cell line A549. In contrast, the aptamer conjugated DPNPs failed to deliver Dox into the cardiomyocyte cell line AC16. Theoretically, this strategy could be employed in vivo to specifically deliver Dox to cancer cells while sparing the myocardium, a major source of dose-limiting adverse events in the clinic. Our work represents an important proof-of-concept exercise demonstrating that ultra-short peptide-based fluorescent nanostructures have great promise for the development of new imaging probes and targeted drug delivery vehicles.
Collapse
Affiliation(s)
- Subramaniyam Sivagnanam
- Department of Chemistry, SRM Institute of Science and Technology SRM Nagar, Potheri, Kattankulathur Tamil Nadu 603203 India
| | - Kiran Das
- Centre of Biomedical Research, Sanjay Gandhi Post Graduate Institute of Medical Sciences (SGPGI) Campus Raebareli Road Lucknow Uttar Pradesh 226014 India
| | - Madhuri Basak
- Centre of Biomedical Research, Sanjay Gandhi Post Graduate Institute of Medical Sciences (SGPGI) Campus Raebareli Road Lucknow Uttar Pradesh 226014 India
| | - Tarun Mahata
- Centre of Biomedical Research, Sanjay Gandhi Post Graduate Institute of Medical Sciences (SGPGI) Campus Raebareli Road Lucknow Uttar Pradesh 226014 India
| | - Adele Stewart
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Florida Atlantic University Jupiter FL 33458 USA
| | - Biswanath Maity
- Centre of Biomedical Research, Sanjay Gandhi Post Graduate Institute of Medical Sciences (SGPGI) Campus Raebareli Road Lucknow Uttar Pradesh 226014 India
| | - Priyadip Das
- Department of Chemistry, SRM Institute of Science and Technology SRM Nagar, Potheri, Kattankulathur Tamil Nadu 603203 India
| |
Collapse
|
30
|
Zhang Z, Zhang Z, Zhang H, Sun JZ, Tang BZ. The mysterious blue emission around 440 nm in carbonyl‐based aliphatic clusteroluminogens. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210954] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zhiming Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Ziteng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Haoke Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
- ZJU‐Hangzhou Global Scientific and Technological Innovation Center Hangzhou Zhejiang 310027 China
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of Technology Guangzhou Guangdong 510006 China
| | - Jing Zhi Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Ben Zhong Tang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
- Shenzhen Institute of Aggregate Science and Technology, School of Science and Engineering The Chinese University of Hong Kong Shenzhen Guangdong 518172 China
- The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Kowloon Hong Kong SAR 999077 China
| |
Collapse
|
31
|
Resurrecting Golgi proteins to grasp Golgi ribbon formation and self-association under stress. Int J Biol Macromol 2022; 194:264-275. [PMID: 34861272 DOI: 10.1016/j.ijbiomac.2021.11.173] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 11/23/2022]
Abstract
The Golgi complex is an essential organelle of the eukaryotic exocytic pathway. A subfamily of Golgi matrix proteins, called GRASPs, is central in stress-induced unconventional secretion, Golgi dynamics during mitosis/apoptosis, and Golgi ribbon formation. The Golgi ribbon is vertebrate-specific and correlates with the appearance of two GRASP paralogues and two Golgins (GM130/Golgin45), which form specific GRASP-Golgin pairs. The molecular details of their appearance only in Metazoans are unknown. Moreover, despite new functionalities supported by GRASP paralogy, little is known about their structural and evolutionary differences. Here, we used ancestor sequence reconstruction and biophysical/biochemical approaches to assess the evolution of GRASPs structure/dynamics, fibrillation, and how they started anchoring their Golgin partners. Our data showed that a GRASP ancestor anchored Golgins before gorasp gene duplication in Metazoans. After gene duplication, variations within the GRASP binding pocket determined which paralogue would recruit which Golgin. These interactions are responsible for their specific Golgi location and Golgi ribbon appearance. We also suggest that GRASPs have a long-standing capacity to form supramolecular structures, affecting their participation in stress-induced processes.
Collapse
|
32
|
Fontana NA, Rosse AD, Watts A, Coelho PSR, Costa-Filho AJ. In vivo observation of amyloid-like fibrils produced under stress. Int J Biol Macromol 2021; 199:42-50. [PMID: 34942208 DOI: 10.1016/j.ijbiomac.2021.12.065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 11/26/2021] [Accepted: 12/09/2021] [Indexed: 11/30/2022]
Abstract
The participation of amyloids in neurodegenerative diseases and functional processes has triggered the quest for methods allowing their direct detection in vivo. Despite the plethora of data, those methods are still lacking. The autofluorescence from the extended β-sheets of amyloids is here used to follow fibrillation of S. cerevisiae Golgi Reassembly and Stacking Protein (Grh1). Grh1 has been implicated in starvation-triggered unconventional protein secretion (UPS), and here its participation also in heat shock response (HSR) is suggested. Fluorescence Lifetime Imaging (FLIM) is used to detect fibril autofluorescence in cells (E. coli and yeast) under stress (starvation and higher temperature). The formation of Grh1 large complexes under stress is further supported by size exclusion chromatography and ultracentrifugation. The data show for the first time in vivo detection of amyloids without the use of extrinsic probes as well as bring new perspectives on the participation of Grh1 in UPS and HSR.
Collapse
Affiliation(s)
- Natália A Fontana
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Ariane D Rosse
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Anthony Watts
- Department of Biochemistry, University of Oxford, Oxford, UK
| | - Paulo S R Coelho
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Antonio J Costa-Filho
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| |
Collapse
|
33
|
Ranade D, Jena R, Sancheti S, Deore V, Dogar V, Gairola S. Rapid, high throughput protein estimation method for saponin and alhydrogel adjuvanted R21 VLP Malaria vaccine based on intrinsic fluorescence. Vaccine 2021; 40:601-611. [PMID: 34933766 DOI: 10.1016/j.vaccine.2021.12.019] [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: 08/24/2021] [Revised: 10/30/2021] [Accepted: 12/09/2021] [Indexed: 11/27/2022]
Abstract
Protein content estimation of recombinant vaccines at drug product (DP) stage is a crucial lot release and stability indicating assay in biopharmaceutical industries. Regulatory bodies such as US-FDA and WHO necessitates the quantitation of protein content to assess process parameters as well as formulation losses. Estimation of protein content at DP stage in presence of adjuvants (e.g AlOOH, AlPO4, saponin and squalene) is quite challenging, and the challenge intensifies when the target protein is in Virus like particles (VLP) form, owing to its size and structural complexity. Methods available for protein estimation of adjuvanted vaccines mostly suffer from inaccuracy at lower protein concentrations and in most cases require antigen desorption before analysis. Present research work is based on the development of a rapid plate-based method for protein estimation through intrinsic fluorescence by using Malaria vaccine R21 VLP as a model protein. Present method exhibited linearity for protein estimation of R21, in the range of 5-30 µg/mL in Alhydrogel and 4-20 µg/mL for Matrix M adjuvant. The method was validated as per ICH guidelines. The limit of quantification was found to be 0.94 µg/mL for both Alhydrogel and Matrix M adjuvanted R21. The method was found specific, precise and repeatable. This method is superior in terms of less sample quantity requirement, multiple sample analysis, short turnaround time and is non-invasive. This method was found to be stability indicating, works for other proteins containing tryptophan residues and operates well even in presence of host cell proteins. Based on the study, present method can be used in vaccine industries for routine in-process sample analysis (both inline and offline), lot release of VLP based drug products in presence of Alhydrogel and saponin based adjuvant systems.
Collapse
Affiliation(s)
- Dnyanesh Ranade
- Quality Control Department, Serum Institute of India Pvt. Ltd, 212/2, Soli Poonawalla Rd, JJC Colony, Suryalok Nagari, Hadapsar, Pune, Maharashtra 411028, India
| | - Rajender Jena
- Quality Control Department, Serum Institute of India Pvt. Ltd, 212/2, Soli Poonawalla Rd, JJC Colony, Suryalok Nagari, Hadapsar, Pune, Maharashtra 411028, India
| | - Shubham Sancheti
- Quality Control Department, Serum Institute of India Pvt. Ltd, 212/2, Soli Poonawalla Rd, JJC Colony, Suryalok Nagari, Hadapsar, Pune, Maharashtra 411028, India
| | - Vicky Deore
- Quality Control Department, Serum Institute of India Pvt. Ltd, 212/2, Soli Poonawalla Rd, JJC Colony, Suryalok Nagari, Hadapsar, Pune, Maharashtra 411028, India
| | - Vikas Dogar
- Quality Control Department, Serum Institute of India Pvt. Ltd, 212/2, Soli Poonawalla Rd, JJC Colony, Suryalok Nagari, Hadapsar, Pune, Maharashtra 411028, India
| | - Sunil Gairola
- Quality Control Department, Serum Institute of India Pvt. Ltd, 212/2, Soli Poonawalla Rd, JJC Colony, Suryalok Nagari, Hadapsar, Pune, Maharashtra 411028, India.
| |
Collapse
|
34
|
Yuan Y, Almohammadi H, Probst J, Mezzenga R. Plasmonic Amyloid Tactoids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2106155. [PMID: 34658087 DOI: 10.1002/adma.202106155] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Despite their link to neurodegenerative diseases, amyloids of natural and synthetic sources can also serve as building blocks for functional materials, while possessing intrinsic photonic properties. Here, it is demonstrated that orientationally ordered amyloid fibrils exhibit polarization-dependent fluorescence, and can mechanically align rod-shaped plasmonic nanoparticles codispersed with them. The coupling between the photonic fibrils in liquid crystalline phases and the plasmonic effect of the nanoparticles leads to selective activation of plasmonic extinctions as well as enhanced fluorescence from the hybrid material. These findings are consistent with numerical simulations of the near-field plasmonic enhancement around the nanoparticles. The study provides an approach to synthesize the intrinsic photonic and mechanical properties of amyloid into functional hybrid materials, and may help improve the detection of amyloid deposits based on their enhanced intrinsic luminescence.
Collapse
Affiliation(s)
- Ye Yuan
- Department of Health Sciences and Technology, ETH Zürich, Zürich, 8092, Switzerland
| | - Hamed Almohammadi
- Department of Health Sciences and Technology, ETH Zürich, Zürich, 8092, Switzerland
| | - Julie Probst
- Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, 8093, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology, ETH Zürich, Zürich, 8092, Switzerland
- Department of Materials, ETH Zürich, Zürich, 8093, Switzerland
| |
Collapse
|
35
|
Tang S, Yang T, Zhao Z, Zhu T, Zhang Q, Hou W, Yuan WZ. Nonconventional luminophores: characteristics, advancements and perspectives. Chem Soc Rev 2021; 50:12616-12655. [PMID: 34610056 DOI: 10.1039/d0cs01087a] [Citation(s) in RCA: 121] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nonconventional luminophores devoid of remarkable conjugates have attracted considerable attention due to their unique luminescence behaviors, updated luminescence mechanism of organics and promising applications in optoelectronic, biological and medical fields. Unlike classic luminogens consisting of molecular segments with greatly extended electron delocalization, these unorthodox luminophores generally possess nonconjugated structures based on subgroups such as ether (-O-), hydroxyl (-OH), halogens, carbonyl (CO), carboxyl (-COOH), cyano (CN), thioether (-S-), sulfoxide (SO), sulfone (OSO), phosphate, and aliphatic amine, as well as their grouped functionalities like amide, imide, anhydride and ureido. They can exhibit intriguing intrinsic luminescence, generally featuring concentration-enhanced emission, aggregation-induced emission, excitation-dependent luminescence and prevailing phosphorescence. Herein, we review the recent progress in exploring these nonconventional luminophores and discuss the current challenges and future perspectives. Notably, different mechanisms are reviewed and the clustering-triggered emission (CTE) mechanism is highlighted, which emphasizes the clustering of the above mentioned electron rich moieties and consequent electron delocalization along with conformation rigidification. The CTE mechanism seems widely applicable for diversified natural, synthetic and supramolecular systems.
Collapse
Affiliation(s)
- Saixing Tang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
| | - Tianjia Yang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
| | - Zihao Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
| | - Tianwen Zhu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
| | - Qiang Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
| | - Wubeiwen Hou
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
| | - Wang Zhang Yuan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
| |
Collapse
|
36
|
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] [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.
Collapse
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
| |
Collapse
|
37
|
Yuan Y, Solin N. Mechanochemical Preparation and Self-Assembly of Protein:Dye Hybrids for White Luminescence. ACS APPLIED POLYMER MATERIALS 2021; 3:4825-4836. [PMID: 34661113 PMCID: PMC8506585 DOI: 10.1021/acsapm.1c00382] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Indexed: 05/17/2023]
Abstract
Protein nanofibrils (PNFs) functionalized with multiple dyes are prepared by a combination of mechanochemistry and liquid-phase self-assembly. The three employed dyes are Fluorescent Brightener 378 (F378), 2-butyl-6-(butylamino)-1H-benzo[de]isoquinoline-1,3(2H)-dione (Fluorol 555), and Nile red (NR). F378 acts as the donor with Fluorol 555 as the acceptor. F555 in turn acts as the donor and NR as the acceptor. This enables a FRET cascade that enables conversion of UV light to white light. The efficiency of FRET can be influenced by the details of the self-assembly process. If proteins milled with different dyes are mixed prior to self-assembly, nanofibrils are formed containing all three dyes, thus favoring FRET processes. By tuning the ratio of the three luminescent dyes, PNF dispersions are obtained that display bright white light emission. Moreover, the PNF dispersions can be converted into white luminescent films and gels where the PNFs may help to organize dye molecules. Additionally, the PNF materials can be employed as coatings on commercial LEDs, enabling emission of white light.
Collapse
|
38
|
Ujike N, Iwaide S, Ono Y, Okano T, Murakami T. Intrinsic fluorescence-based label-free detection of bovine amyloid A amyloidosis. J Vet Diagn Invest 2021; 34:130-132. [PMID: 34609271 DOI: 10.1177/10406387211049217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Amyloidosis is diagnosed by the histologic detection of amyloid deposits; however, this method has limitations such as a prolonged diagnosis time and the need for histologic proficiency. We aimed to develop a rapid and simple method for diagnosing amyloidosis by targeting amyloid-specific endogenous fluorescence, which has not been reported previously, to our knowledge. Fluorescence fingerprint analysis of amyloid extracts and tissue homogenates derived from amyloid A (AA) amyloidosis-affected cattle exhibited a specific intrinsic fluorescence pattern. Furthermore, principal component analysis using analytical data revealed that AA could be identified by peaks near λex 350 nm and λem 430 nm. Fluorescence spectrometry analysis using tissue homogenates, which does not require special histochemical staining, enables the rapid detection of bovine AA.
Collapse
Affiliation(s)
- Naoki Ujike
- Laboratory of Veterinary Toxicology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Susumu Iwaide
- Laboratory of Veterinary Toxicology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Yuki Ono
- Advanced Technology Center, Corporate R&D Headquarters, Konica Minolta Inc., Hachioji, Tokyo, Japan
| | - Takayuki Okano
- Advanced Technology Center, Corporate R&D Headquarters, Konica Minolta Inc., Hachioji, Tokyo, Japan
| | - Tomoaki Murakami
- Laboratory of Veterinary Toxicology, Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| |
Collapse
|
39
|
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] [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.
Collapse
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.)
| |
Collapse
|
40
|
Liao P, Zang S, Wu T, Jin H, Wang W, Huang J, Tang BZ, Yan Y. Generating circularly polarized luminescence from clusterization-triggered emission using solid phase molecular self-assembly. Nat Commun 2021; 12:5496. [PMID: 34535652 PMCID: PMC8448880 DOI: 10.1038/s41467-021-25789-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 08/19/2021] [Indexed: 02/08/2023] Open
Abstract
Purely-organic clusterization-triggered emission (CTE) has displayed promising abilities in bioimaging, chemical sensing, and multicolor luminescence. However, it remains absent in the field of circularly polarized luminescence (CPL) due to the difficulties in well-aligning the nonconventional luminogens. We report a case of CPL generated with CTE using the solid phase molecular self-assembly (SPMSA) of poly-L-lysine (PLL) and oleate ion (OL), that is, the macroscopic CPL supramolecular film self-assembled by the electrostatic complex of PLL/OL under mechanical pressure. Well-defined interface charge distribution, given by lamellar mesophases of OL ions, forces the PLL chains to fold regularly as a requirement of optimal electrostatic interactions. Further facilitated by hydrogen bonding, the through-space conjugation (TSC) of orderly aligned electron-rich O and N atoms leads to CTE-based CPL, which is capable of transferring energy to an acceptor via a Förster resonance energy transfer (FRET) process, making it possible to develop environmentally friendly and economic CPL from sustainable and renewable materials.
Collapse
Affiliation(s)
- Peilong Liao
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Shihao Zang
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Tongyue Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Hongjun Jin
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Wenkai Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Jianbin Huang
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Ben Zhong Tang
- Shenzhen Institute of Molecular Aggregate Science and Engineering, School of Science and Engineering, The Chinese University of Hong Kong, 2001 Longxiang Boulevard, Longgang, Shenzhen, Guangdong, 518172, China.
| | - Yun Yan
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
| |
Collapse
|
41
|
Intrinsic disorder and phase transitions: Pieces in the puzzling role of the prion protein in health and disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2021; 183:1-43. [PMID: 34656326 DOI: 10.1016/bs.pmbts.2021.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
After four decades of prion protein research, the pressing questions in the literature remain similar to the common existential dilemmas. Who am I? Some structural characteristics of the cellular prion protein (PrPC) and scrapie PrP (PrPSc) remain unknown: there are no high-resolution atomic structures for either full-length endogenous human PrPC or isolated infectious PrPSc particles. Why am I here? It is not known why PrPC and PrPSc are found in specific cellular compartments such as the nucleus; while the physiological functions of PrPC are still being uncovered, the misfolding site remains obscure. Where am I going? The subcellular distribution of PrPC and PrPSc is wide (reported in 10 different locations in the cell). This complexity is further exacerbated by the eight different PrP fragments yielded from conserved proteolytic cleavages and by reversible post-translational modifications, such as glycosylation, phosphorylation, and ubiquitination. Moreover, about 55 pathological mutations and 16 polymorphisms on the PrP gene (PRNP) have been described. Prion diseases also share unique, challenging features: strain phenomenon (associated with the heterogeneity of PrPSc conformations) and the possible transmissibility between species, factors which contribute to PrP undruggability. However, two recent concepts in biochemistry-intrinsically disordered proteins and phase transitions-may shed light on the molecular basis of PrP's role in physiology and disease.
Collapse
|
42
|
Mignon J, Mottet D, Verrillo G, Matagne A, Perpète EA, Michaux C. Revealing Intrinsic Disorder and Aggregation Properties of the DPF3a Zinc Finger Protein. ACS OMEGA 2021; 6:18793-18801. [PMID: 34337219 PMCID: PMC8319922 DOI: 10.1021/acsomega.1c01948] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 05/27/2021] [Indexed: 05/27/2023]
Abstract
Double PHD fingers 3 (DPF3) is a human epigenetic factor found in the multiprotein BRG1-associated factor (BAF) chromatin remodeling complex. It has two isoforms: DPF3b and DPF3a, but very little is known about the latter. Despite the lack of structural data, it has been established that DPF3a is involved in various protein-protein interactions and that it is subject to phosphorylation. These features are typical of intrinsically disordered proteins (IDPs) for which the disorder is essential to their functionality. IDPs are also prone to aggregation and can assemble into cytotoxic amyloid fibrils in specific pathological contexts. In the present work, the DPF3a disordered nature and propensity to aggregation have been investigated using a combination of disorder predictors and biophysical methods. The DPF3a-predicted disordered character has been correlated to a characteristic random coil signal in far-UV circular dichroism (CD) and to a fluorescence emission band typical of Trp residues fully exposed to the solvent. After DPF3a purification and 24 h of incubation at room temperature, dynamic light scattering confirmed the presence of DPF3a aggregates whose amyloid nature have been highlighted by a specific deep-blue autofluorescence signature, as well as by an increase in thioflavin T fluorescence upon binding. These results are supported by an enrichment in twisted β-sheets as observed in far-UV CD and a blue shift in intrinsic Trp fluorescence. Both indicate that DPF3a spontaneously tends to orderly aggregate into amyloid fibrils. The diversity of optical signatures originates from dynamical transitions between the disordered and aggregated states of the protein during the incubation. Transmission electron microscopy micrographs reveal that the DPF3a fibrillation process leads to the formation of short needle-shape filaments.
Collapse
Affiliation(s)
- Julien Mignon
- Laboratoire
de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
| | - Denis Mottet
- GIGA-Molecular
Biology of Diseases, University of Liège, Quartier Hôpital, Avenue
de l’Hôpital 11, 4000 Liège, Belgium
| | - Giulia Verrillo
- GIGA-Molecular
Biology of Diseases, University of Liège, Quartier Hôpital, Avenue
de l’Hôpital 11, 4000 Liège, Belgium
| | - André Matagne
- Laboratoire
d’Enzymologie et Repliement des Protéine, Centre d’Ingénierie
des Protéines, InBioS, University
of Liège, Building B6C, Quartier Agora, Allée du 6 Août 13, 4000 Liège, Belgium
| | - Eric A. Perpète
- Laboratoire
de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
- Namur
Institute of Structured Matter, University
of Namur, 5000 Namur, Belgium
- Institute
of Life-Earth-Environment, University of
Namur, 5000 Namur, Belgium
| | - Catherine Michaux
- Laboratoire
de Chimie Physique des Biomolécules, UCPTS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium
- Namur
Institute of Structured Matter, University
of Namur, 5000 Namur, Belgium
- Namur
Research
Institute for Life Sciences, University
of Namur, 5000 Namur, Belgium
| |
Collapse
|
43
|
Arnon ZA, Kreiser T, Yakimov B, Brown N, Aizen R, Shaham-Niv S, Makam P, Qaisrani MN, Poli E, Ruggiero A, Slutsky I, Hassanali A, Shirshin E, Levy D, Gazit E. On-off transition and ultrafast decay of amino acid luminescence driven by modulation of supramolecular packing. iScience 2021; 24:102695. [PMID: 34258546 PMCID: PMC8253955 DOI: 10.1016/j.isci.2021.102695] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/17/2021] [Accepted: 06/04/2021] [Indexed: 12/27/2022] Open
Abstract
Luminescence of biomolecules in the visible range of the spectrum has been experimentally observed upon aggregation, contrary to their monomeric state. However, the physical basis for this phenomenon is still elusive. Here, we systematically examine all coded amino acids to provide non-biased empirical insights. Several amino acids, including non-aromatic, show intense visible luminescence. Lysine crystals display the highest signal, whereas the very chemically similar non-coded ornithine does not, implying a role for molecular packing rather than the chemical characteristics. Furthermore, cysteine shows luminescence that is indeed crystal packing dependent as repeated rearrangements between two crystal structures result in a reversible on-off optical transition. In addition, ultrafast lifetime decay is experimentally validated, corroborating a recently raised hypothesis regarding the governing role of nπ∗ states in the emission formation. Collectively, our study supports that electronic interactions between non-fluorescent, non-absorbing molecules at the monomeric state may result in reversible optically active states by the formation of supramolecular fluorophores.
Collapse
Affiliation(s)
- Zohar A Arnon
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Topaz Kreiser
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Boris Yakimov
- Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow 119991 Russia
| | - Noam Brown
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ruth Aizen
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Shira Shaham-Niv
- BLAVATNIK CENTER for Drug Discovery, Metabolite Medicine Division, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Pandeeswar Makam
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | | | - Emiliano Poli
- International Centre for Theoretical Physics, Strada Costiera, 11, 34151 Trieste, Italy
| | - Antonella Ruggiero
- Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Inna Slutsky
- Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Ali Hassanali
- International Centre for Theoretical Physics, Strada Costiera, 11, 34151 Trieste, Italy
| | - Evgeny Shirshin
- Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow 119991 Russia
- Institute for Regenerative Medicine, I.M. Sechenov Moscow State Medical University, 119991 Moscow, Russia
| | - Davide Levy
- X-Ray Diffraction Lab, Wolfson Applied Materials Research Centre, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
- Department of Materials Science and Engineering Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| |
Collapse
|
44
|
Toward the equilibrium and kinetics of amyloid peptide self-assembly. Curr Opin Struct Biol 2021; 70:87-98. [PMID: 34153659 DOI: 10.1016/j.sbi.2021.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/09/2021] [Accepted: 05/09/2021] [Indexed: 01/28/2023]
Abstract
Several devastating human diseases are linked to peptide self-assembly, but our understanding their onset and progression is not settled. This is a sign of the complexity of the aggregation process, which is prevented, catalyzed, or retarded by numerous factors in body fluids and cells, varying in time and space. Biophysical studies of pure peptide solutions contribute insights into the underlying steps in the process and quantitative parameters relating to rate constants (energy barriers) and equilibrium constants (population distributions). This requires methods to quantify the concentration of at least one species in the process. Translation to an in vivo situation poses an enormous challenge, and the effects of selected components (bottom up) or entire body fluids (top down) need to be quantified.
Collapse
|
45
|
Florio D, Di Natale C, Scognamiglio PL, Leone M, La Manna S, Di Somma S, Netti PA, Malfitano AM, Marasco D. Self-assembly of bio-inspired heterochiral peptides. Bioorg Chem 2021; 114:105047. [PMID: 34098256 DOI: 10.1016/j.bioorg.2021.105047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 10/21/2022]
Abstract
Peptide hydrogels, deriving from natural protein fragments, present unique advantages as compatibility and low cost of production that allow their wide application in different fields as wound healing, cell delivery and tissue regeneration. To engineer new biomaterials, the change of the chirality of single amino acids demonstrated a powerful approach to modulate the self-assembly mechanism. Recently we unveiled that a small stretch spanning residues 268-273 in the C-terminal domain (CTD) of Nucleophosmin 1 (NPM1) is an amyloid sequence. Herein, we performed a systematic D-scan of this sequence and analyzed the structural properties of obtained peptides. The conformational and kinetic features of self-aggregates and the morphologies of derived microstructures were investigated by means of different biophysical techniques, as well as the compatibility of hydrogels was evaluated in HeLa cells. All the investigated hexapeptides formed hydrogels even if they exhibited different conformational intermediates during aggregation, and they structural featured are finely tuned by introduced chiralities.
Collapse
Affiliation(s)
- Daniele Florio
- Department of Pharmacy, University of Naples "Federico II", Italy
| | - Concetta Di Natale
- Center for Advanced Biomaterial for Health Care (CABHC), Istituto Italiano di Tecnologia, Naples, Italy; Interdisciplinary Research Centre on Biomaterials (CRIB), Department of Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
| | - Pasqualina Liana Scognamiglio
- Center for Advanced Biomaterial for Health Care (CABHC), Istituto Italiano di Tecnologia, Naples, Italy; Interdisciplinary Research Centre on Biomaterials (CRIB), Department of Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
| | - Marilisa Leone
- Institute of Biostructures and Bioimaging - CNR, 80134 Naples, Italy
| | - Sara La Manna
- Department of Pharmacy, University of Naples "Federico II", Italy
| | - Sarah Di Somma
- Department of Translational Medical Science, University of Naples Federico II, 80131 Napoli, Italy
| | - Paolo Antonio Netti
- Center for Advanced Biomaterial for Health Care (CABHC), Istituto Italiano di Tecnologia, Naples, Italy; Interdisciplinary Research Centre on Biomaterials (CRIB), Department of Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University "Federico II", Piazzale Tecchio 80, 80125 Naples, Italy
| | - Anna Maria Malfitano
- Department of Translational Medical Science, University of Naples Federico II, 80131 Napoli, Italy
| | - Daniela Marasco
- Department of Pharmacy, University of Naples "Federico II", Italy.
| |
Collapse
|
46
|
Abstract
Intrinsic fluorescence of nonaromatic amino acids is a puzzling phenomenon with an enormous potential in biophotonic applications. The physical origins of this effect, however, remain elusive. Herein, we demonstrate how specific hydrogen bond networks can modulate fluorescence. We highlight the key role played by short hydrogen bonds, present in the protein structure, on the ensuing fluorescence. We provide detailed experimental and molecular evidence to explain these unusual nonaromatic optical properties. Our findings should benefit the design of novel optically active biomaterials for applications in biosensing and imaging. Fluorescence in biological systems is usually associated with the presence of aromatic groups. Here, by employing a combined experimental and computational approach, we show that specific hydrogen bond networks can significantly affect fluorescence. In particular, we reveal that the single amino acid L-glutamine, by undergoing a chemical transformation leading to the formation of a short hydrogen bond, displays optical properties that are significantly enhanced compared with L-glutamine itself. Ab initio molecular dynamics simulations highlight that these short hydrogen bonds prevent the appearance of a conical intersection between the excited and the ground states and thereby significantly decrease nonradiative transition probabilities. Our findings open the door to the design of new photoactive materials with biophotonic applications.
Collapse
|
47
|
Grelich-Mucha M, Garcia AM, Torbeev V, Ożga K, Berlicki Ł, Olesiak-Bańska J. Autofluorescence of Amyloids Determined by Enantiomeric Composition of Peptides. J Phys Chem B 2021; 125:5502-5510. [PMID: 34008978 PMCID: PMC8182742 DOI: 10.1021/acs.jpcb.1c00808] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
Amyloid fibrils are
peptide or protein aggregates possessing a
cross-β-sheet structure. They possess intrinsic fluorescence
property, which is still not fully understood. Herein, we compare
structural and optical properties of fibrils formed from L- and D-enantiomers
of the (105–115) fragment of transthyretin (TTR) and from their
racemic mixture. Our results show that autofluorescence of fibrils
obtained from enantiomers differs from that of fibrils from the racemic
mixture. In order to elucidate the origin of observed differences,
we analyzed the structure and morphology of fibrils and showed how
variations in β-sheet organization influence optical properties
of fibrils. We clarified the contribution of aromatic rings and the
amyloid backbone to the final blue-green emission of fibrils. This
work demonstrates how enantiomeric composition of amino acids allows
us to modulate the self-assembly and final morphology of well-defined
fibrillar bionanostructures with optical properties controlled by
supramolecular organization.
Collapse
Affiliation(s)
- Manuela Grelich-Mucha
- Advanced Materials Engineering and Modelling Group, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Ana M Garcia
- Institute de Science et d'Ingénierie Supramoléculaires (ISIS), International Center for Frontier Research in Chemistry (icFRC), University of Strasbourg, CNRS (UMR 7006) Strasbourg 67000, France
| | - Vladimir Torbeev
- Institute de Science et d'Ingénierie Supramoléculaires (ISIS), International Center for Frontier Research in Chemistry (icFRC), University of Strasbourg, CNRS (UMR 7006) Strasbourg 67000, France
| | - Katarzyna Ożga
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Łukasz Berlicki
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Joanna Olesiak-Bańska
- Advanced Materials Engineering and Modelling Group, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
| |
Collapse
|
48
|
Monti A, Bruckmann C, Blasi F, Ruvo M, Vitagliano L, Doti N. Amyloid-like Prep1 peptides exhibit reversible blue-green-red fluorescence in vitro and in living cells. Chem Commun (Camb) 2021; 57:3720-3723. [PMID: 33729264 DOI: 10.1039/d1cc01145f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PREP1-based peptides form amyloid-like aggregates endowed with an intrinsic blue-green-red fluorescence with an unusual sharp maximum at 520 nm upon excitation with visible light under physiological conditions. The peptide PREP1[117-132], whose sequence does not contain aromatic residues, presents a pH-dependent and reversible fluorescence, in line with its structural transition from β-sheet rich aggregates to α-helix structures. These findings further demonstrate that the non-canonical fluorescence exhibited by amyloids is an articulated phenomenon.
Collapse
Affiliation(s)
- Alessandra Monti
- Institute of Biostructures and Bioimaging (IBB)-CNR, Via Mezzocannone 16, Naples 80134, Italy.
| | | | | | | | | | | |
Collapse
|
49
|
Jesus CSH, Soares HT, Piedade AP, Cortes L, Serpa C. Using amyloid autofluorescence as a biomarker for lysozyme aggregation inhibition. Analyst 2021; 146:2383-2391. [PMID: 33646214 DOI: 10.1039/d0an02260h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The assembly of proteins into amyloidogenic aggregates underlies the onset and symptoms of several pathologies, including Alzheimer's disease, Parkinson's disease and type II diabetes. Among the efforts for fighting these diseases, there is a great demand for developing novel, fast and reliable methods for in vitro screening of new drugs that may suppress or reverse amyloidogenesis. Recent studies unravelled a progressive increase in a blue autofluorescence upon amyloid formation originated from many different proteins, including the peptide amyloid-β, lysozyme or insulin. Herein, we propose a drug screening method using this property, avoiding the use of external probe dyes. We demonstrate that the inhibition of lysozyme amyloid formation by means of two known inhibitors, tartrazine and amaranth, can be monitored based on the autofluorescence of lysozyme amyloid aggregates. Our results show that amyloid luminescence is an intrinsic property that can be potentially applied in a screening assay, allowing the ranking of drug efficiency. The assays demonstrated here are fast to perform and suitable for scaling using microplate assays, configuring a new sensitive and economically feasible method.
Collapse
Affiliation(s)
- Catarina S H Jesus
- University of Coimbra, CQC, Department of Chemistry, 3004-535 Coimbra, Portugal.
| | | | | | | | | |
Collapse
|
50
|
Banerjee S. Long-term incubation of myoglobin with glyoxal induces amyloid like aggregation of the heme protein: Implications of advanced glycation end products in protein conformational disorders. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|