1
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Longhena F, Boujebene R, Brembati V, Sandre M, Bubacco L, Abbate S, Longhi G, Bellucci A. Nanorod-associated plasmonic circular dichroism monitors the handedness and composition of α-synuclein fibrils from Parkinson's disease models and post-mortem brain. NANOSCALE 2024; 16:18882-18898. [PMID: 39318230 DOI: 10.1039/d4nr03002h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
Human full-length (fl) αSyn fibrils, key neuropathological hallmarks of Parkinson's disease (PD), generate intense optical activity corresponding to the surface plasmon resonance of interacting gold nanorods. Herein, we analysed fibril-enriched protein extracts from mouse and human brain samples as well as from SK-N-SH cell lines with or without human fl and C-terminally truncated (Ctt) αSyn overexpression and exposed them to αSyn monomers, recombinant fl αSyn fibrils or Ctt αSyn fibrils. In vitro-generated human recombinant fl and Ctt αSyn fibrils and fibrils purified from SK-N-SH cells with fl or Ctt αSyn overexpression were also analysed using transmission electron microscopy (TEM) to gain insights into the nanorod-fibril complexes. We found that under the same experimental conditions, bisignate circular dichroism (CD) spectra of Ctt αSyn fibrils exhibited a blue-wavelength shift compared to that of fl αSyn fibrils. TEM results supported that this could be attributed to the different properties of nanorods. In our experimental conditions, fibril-enriched PD brain extract broadened the longitudinal surface plasmonic band with a bisignate CD couplet centred corresponding to the absorption band maximum. Plasmonic CD (PCD) couplets of in vivo- and in vitro-generated fibrils displayed sign reversal, suggesting their opposite handedness. Moreover, the incubation of in vitro-generated human recombinant fl αSyn fibrils in mouse brain extracts from αSyn null mice resulted in PCD couplet inversion, indicating that the biological environment may shape the handedness of αSyn fibrils. These findings support that nanorod-based PCD can provide useful information on the composition and features of αSyn fibrils from biological materials.
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Affiliation(s)
- Francesca Longhena
- Department of molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.
- Department of Clinical Neurosciences-Clifford Allbutt Building, University of Cambridge, Hills Road CB2 0AH, Cambridge, UK
| | - Rihab Boujebene
- Department of molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.
| | - Viviana Brembati
- Department of molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.
| | - Michele Sandre
- Department of Biology, University of Padova, Via Ugo Bassi 58b, 35121 Padua, Italy
| | - Luigi Bubacco
- Department of Biology, University of Padova, Via Ugo Bassi 58b, 35121 Padua, Italy
| | - Sergio Abbate
- Department of molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.
- Istituto Nazionale di Ottica, INO-CNR, Research Unit of Brescia, c/o CSMT, Via Branze 35, 25123 Brescia, Italy
| | - Giovanna Longhi
- Department of molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.
- Istituto Nazionale di Ottica, INO-CNR, Research Unit of Brescia, c/o CSMT, Via Branze 35, 25123 Brescia, Italy
| | - Arianna Bellucci
- Department of molecular and Translational Medicine, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.
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2
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Pescitelli G, Di Bari L. The Phenomenon of Vibrational Circular Dichroism Enhancement: A Systematic Survey of Literature Data. J Phys Chem B 2024; 128:9043-9060. [PMID: 39279667 DOI: 10.1021/acs.jpcb.4c04143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/18/2024]
Abstract
While the intensity of vibrational circular dichroism (VCD) signals is commonly 104-105 times smaller than that of corresponding IR signals, several kinds of systems display enhanced VCD spectra with g-values (VCD/IR intensity ratio) above 10-3 and even reaching 5 × 10-2 in some exceptional cases. These systems include transition metal and lanthanide complexes, protein and peptide fibrils, short oligopeptide gels, crystalline compounds, gels and solution aggregates of organic compounds. We review the literature on VCD enhancement, focusing on collecting and analyzing data on enhanced g-values. Special attention is given to the mechanisms proposed to produce these effects.
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Affiliation(s)
- Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56126 Pisa, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56126 Pisa, Italy
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3
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Majka Z, Kwiecień K, Kaczor A. Vibrational Optical Activity of Amyloid Fibrils. Chempluschem 2024; 89:e202400091. [PMID: 38421108 DOI: 10.1002/cplu.202400091] [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: 01/31/2024] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/02/2024]
Abstract
Amyloid fibrils are supramolecular systems showing distinct chirality at different levels of their complex multilayered architectures. Due to the regular long-range chiral organization, amyloid fibrils exhibit the most intense Vibrational Optical Activity (VOA) signal observed up to now, making VOA techniques: Vibrational Circular Dichroism (VCD) and Raman Optical Activity (ROA) very promising tools to explore their structures, handedness and intricate polymorphism. This concept article reviews up-to-date experimental studies on VOA applications to investigate amyloid fibrils highlighting its future potential in analyzing of these unique supramolecular systems, in particular in the context of biomedicine and nanotechnology.
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Affiliation(s)
- Zuzanna Majka
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387, Krakow, Poland
| | - Karolina Kwiecień
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387, Krakow, Poland
- Jagiellonian University, Doctoral School of Exact and Natural Sciences, Prof. St. Łojasiewicza 11 Str., Krakow, Poland
- Łukasiewicz Research Network-Institute of Microelectronics and Photonics, 39 Zabłocie Str., 30-701, Krakow, Poland
| | - Agnieszka Kaczor
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387, Krakow, Poland
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4
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Duraisamy DK, Reddy SMM, Saveri P, Deshpande AP, Shanmugam G. A Unique Temperature-Induced Reverse Supramolecular Chirality-Assisted Gel-to-Gel Transition. Macromol Rapid Commun 2024; 45:e2400018. [PMID: 38437791 DOI: 10.1002/marc.202400018] [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: 01/10/2024] [Revised: 02/19/2024] [Indexed: 03/06/2024]
Abstract
Supramolecular hydrogels typically undergo a gel-to-sol transition with heat, as intermolecular interactions within the gel weaken. Although gel-to-gel transitions during heating are rare, they may occur due to minor rearrangements caused by thermal forces in the supramolecular self-assembled structure. Here, an unprecedented temperature-induced gel-to-gel transition assisted by supramolecular chiral inversion in a hydrogel system is presented. The transition results from a left-handed M-type helix to a right-handed P-type helix, attributed to the π-system-conjugated amino acid, l-Tyrosine (Fm- l-Tyr). Upon solvent dilution, Fm-l-Tyr induces translucent hydrogel formed by entangled fibers with a kinetically stable left-handed M-type supramolecular helix. At 70 °C, hydrogel transforms into an opaque gel with a reverse supramolecular chirality yielding a thermodynamically stable right-handed P-type helix. Supramolecular chiral inversion is substantiated by two chiroptical methods. This unique gel-to-gel transition, accompanied by chiral inversion, is anticipated to attract attention, especially for applications sensitive to chirality.
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Affiliation(s)
- Dinesh Kumar Duraisamy
- Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai, 600020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Samala Murali Mohan Reddy
- Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai, 600020, India
| | - Puchalapalli Saveri
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Abhijit P Deshpande
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Ganesh Shanmugam
- Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Adyar, Chennai, 600020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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5
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Abioye A, Akintade D, Mitchell J, Olorode S, Adejare A. Nonintuitive Immunogenicity and Plasticity of Alpha-Synuclein Conformers: A Paradigm for Smart Delivery of Neuro-Immunotherapeutics. Pharmaceutics 2024; 16:609. [PMID: 38794271 PMCID: PMC11124533 DOI: 10.3390/pharmaceutics16050609] [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: 03/30/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/26/2024] Open
Abstract
Despite the extensive research successes and continuous developments in modern medicine in terms of diagnosis, prevention, and treatment, the lack of clinically useful disease-modifying drugs or immunotherapeutic agents that can successfully treat or prevent neurodegenerative diseases is an ongoing challenge. To date, only one of the 244 drugs in clinical trials for the treatment of neurodegenerative diseases has been approved in the past decade, indicating a failure rate of 99.6%. In corollary, the approved monoclonal antibody did not demonstrate significant cognitive benefits. Thus, the prevalence of neurodegenerative diseases is increasing rapidly. Therefore, there is an urgent need for creative approaches to identifying and testing biomarkers for better diagnosis, prevention, and disease-modifying strategies for the treatment of neurodegenerative diseases. Overexpression of the endogenous α-synuclein has been identified as the driving force for the formation of the pathogenic α-synuclein (α-Syn) conformers, resulting in neuroinflammation, hypersensitivity, endogenous homeostatic responses, oxidative dysfunction, and degeneration of dopaminergic neurons in Parkinson's disease (PD). However, the conformational plasticity of α-Syn proffers that a certain level of α-Syn is essential for the survival of neurons. Thus, it exerts both neuroprotective and neurotoxic (regulatory) functions on neighboring neuronal cells. Furthermore, the aberrant metastable α-Syn conformers may be subtle and difficult to detect but may trigger cellular and molecular events including immune responses. It is well documented in literature that the misfolded α-Syn and its conformers that are released into the extracellular space from damaged or dead neurons trigger the innate and adaptive immune responses in PD. Thus, in this review, we discuss the nonintuitive plasticity and immunogenicity of the α-Syn conformers in the brain immune cells and their physiological and pathological consequences on the neuroimmune responses including neuroinflammation, homeostatic remodeling, and cell-specific interactions that promote neuroprotection in PD. We also critically reviewed the novel strategies for immunotherapeutic delivery interventions in PD pathogenesis including immunotherapeutic targets and potential nanoparticle-based smart drug delivery systems. It is envisioned that a greater understanding of the nonintuitive immunogenicity of aberrant α-Syn conformers in the brain's microenvironment would provide a platform for identifying valid therapeutic targets and developing smart brain delivery systems for clinically effective disease-modifying immunotherapeutics that can aid in the prevention and treatment of PD in the future.
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Affiliation(s)
- Amos Abioye
- College of Pharmacy and Health Sciences, Belmont University, Nashville, TN 37212, USA
| | - Damilare Akintade
- Department of Biomedical Sciences, School of Health, Leeds Beckett University, Leeds LS1 3HE, UK; (D.A.); (J.M.); (S.O.)
| | - James Mitchell
- Department of Biomedical Sciences, School of Health, Leeds Beckett University, Leeds LS1 3HE, UK; (D.A.); (J.M.); (S.O.)
| | - Simisade Olorode
- Department of Biomedical Sciences, School of Health, Leeds Beckett University, Leeds LS1 3HE, UK; (D.A.); (J.M.); (S.O.)
| | - Adeboye Adejare
- Department of Pharmaceutical Sciences, Philadelphia College of Pharmacy, Saint Joseph’s University, Philadelphia, PA 19131, USA;
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6
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Kaur H, Garg M, Tomar D, Singh S, Jena KC. Role of tungsten disulfide quantum dots in specific protein-protein interactions at air-water interface. J Chem Phys 2024; 160:084705. [PMID: 38411235 DOI: 10.1063/5.0187563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/05/2024] [Indexed: 02/28/2024] Open
Abstract
The intriguing network of antibody-antigen (Ab-Ag) interactions is highly governed by environmental perturbations and the nature of biomolecular interaction. Protein-protein interactions (PPIs) have potential applications in developing protein-adsorption-based sensors and nano-scale materials. Therefore, characterizing PPIs in the presence of a nanomaterial at the molecular level becomes imperative. The present work involves the investigation of antiferritin-ferritin (Ab-Ag) protein interactions under the influence of tungsten disulfide quantum dots (WS2 QDs). Isothermal calorimetry and contact angle measurements validated the strong influence of WS2 QDs on Ab-Ag interactions. The interfacial signatures of nano-bio-interactions were evaluated using sum frequency generation vibration spectroscopy (SFG-VS) at the air-water interface. Our SFG results reveal a variation in the tilt angle of methyl groups by ∼12° ± 2° for the Ab-Ag system in the presence of WS2 QDs. The results illustrated an enhanced ordering of water molecules in the presence of QDs, which underpins the active role of interfacial water molecules during nano-bio-interactions. We have also witnessed a differential impact of QDs on Ab-Ag by raising the concentration of the Ab-Ag combination, which showcased an increased inter-molecular interaction among the Ab and Ag molecules and a minimal influence on the methyl tilt angle. These findings suggest the formation of stronger and ordered Ab-Ag complexes upon introducing WS2 QDs in the aqueous medium and signify the potentiality of WS2 QDs relevant to protein-based sensing assays.
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Affiliation(s)
- Harsharan Kaur
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Mayank Garg
- CSIR-Central Scientific Instruments Organisation (CSIR-CSIO), Chandigarh 160030, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Deepak Tomar
- Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Suman Singh
- CSIR-Central Scientific Instruments Organisation (CSIR-CSIO), Chandigarh 160030, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kailash C Jena
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
- Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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7
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Klawa SJ, Lee M, Riker KD, Jian T, Wang Q, Gao Y, Daly ML, Bhonge S, Childers WS, Omosun TO, Mehta AK, Lynn DG, Freeman R. Uncovering supramolecular chirality codes for the design of tunable biomaterials. Nat Commun 2024; 15:788. [PMID: 38278785 PMCID: PMC10817930 DOI: 10.1038/s41467-024-45019-2] [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: 08/08/2023] [Accepted: 01/12/2024] [Indexed: 01/28/2024] Open
Abstract
In neurodegenerative diseases, polymorphism and supramolecular assembly of β-sheet amyloids are implicated in many different etiologies and may adopt either a left- or right-handed supramolecular chirality. Yet, the underlying principles of how sequence regulates supramolecular chirality remains unknown. Here, we characterize the sequence specificity of the central core of amyloid-β 42 and design derivatives which enable chirality inversion at biologically relevant temperatures. We further find that C-terminal modifications can tune the energy barrier of a left-to-right chiral inversion. Leveraging this design principle, we demonstrate how temperature-triggered chiral inversion of peptides hosting therapeutic payloads modulates the dosed release of an anticancer drug. These results suggest a generalizable approach for fine-tuning supramolecular chirality that can be applied in developing treatments to regulate amyloid morphology in neurodegeneration as well as in other disease states.
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Affiliation(s)
- Stephen J Klawa
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Michelle Lee
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
| | - Kyle D Riker
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Tengyue Jian
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
- Broad Pharm, San Diego, California, 92121, USA
| | - Qunzhao Wang
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Yuan Gao
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Margaret L Daly
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Shreeya Bhonge
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - W Seth Childers
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Tolulope O Omosun
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- U.S. Department of Justice, Chicago, IL, 60603, USA
| | - Anil K Mehta
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- The National High Magnetic Field Laboratory, University of Florida, Gainesville, FL, 32611, USA
| | - David G Lynn
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA.
- Department of Biology, Emory University, Atlanta, GA, 30322, USA.
| | - Ronit Freeman
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA.
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8
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Wang CY, Jia JG, Weng GG, Qin MF, Xu K, Zheng LM. Macroscopic handedness inversion of terbium coordination polymers achieved by doping homochiral ligand analogues. Chem Sci 2023; 14:10892-10901. [PMID: 37829014 PMCID: PMC10566478 DOI: 10.1039/d3sc03230b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 09/14/2023] [Indexed: 10/14/2023] Open
Abstract
Inspired by natural biological systems, chiral or handedness inversion by altering external and internal conditions to influence intermolecular interactions is an attractive topic for regulating chiral self-assembled materials. For coordination polymers, the regulation of their helical handedness remains little reported compared to polymers and supramolecules. In this work, we choose the chiral ligands R-pempH2 (pempH2 = (1-phenylethylamino)methylphosphonic acid) and R-XpempH2 (X = F, Cl, Br) as the second ligand, which can introduce C-H⋯π and C-H⋯X interactions, doped into the reaction system of the Tb(R-cyampH)3·3H2O (cyampH2 = (1-cyclohexylethylamino)methylphosphonic acid) coordination polymer, which itself can form a right-handed superhelix by van der Waals forces, and a series of superhelices R-1H-x, R-2F-x, R-3Cl-x, and R-4Br-x with different doping ratios x were obtained, whose handedness is related to the second ligand and its doping ratio, indicating the decisive role of interchain interactions of different strengths in the helical handedness. This study could provide a new pathway for the design and self-assembly of chiral materials with controllable handedness and help the further understanding of the mechanism of self-assembly of coordination polymers forming macroscopic helical systems.
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Affiliation(s)
- Chang-Yu Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Centre of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Jia-Ge Jia
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Centre of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Guo-Guo Weng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Centre of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Ming-Feng Qin
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Centre of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Kui Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Centre of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
| | - Li-Min Zheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Centre of Advanced Microstructures, Nanjing University Nanjing 210023 P. R. China
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9
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Wang YJ, Shi XY, Xing P, Zang SQ. Metallophilic Interactions Drive Supramolecular Chirality Evolution and Amplify Circularly Polarized Luminescence. JACS AU 2023; 3:565-574. [PMID: 36873685 PMCID: PMC9976340 DOI: 10.1021/jacsau.2c00653] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/22/2022] [Accepted: 01/04/2023] [Indexed: 06/18/2023]
Abstract
Metallophilic interactions, which are ubiquitous among d10 metal complexes with linear coordination geometries, can direct one-dimensional assembly. However, the ability of these interactions to manipulate chirality at the hierarchical level largely remains unknown. In this work, we unveiled the role of Au···Cu metallophilic interactions in directing the chirality of multicomponent assemblies. N-heterocyclic carbene-Au(I) complexes bearing amino acid residues formed chiral co-assemblies with [CuI2]- anions via Au···Cu interactions. These metallophilic interactions changed the molecular packing modes of the co-assembled nanoarchitectures from lamellar to columnar chiral packing. This transformation initiated the emergence, inversion, and evolution of supramolecular chirality, thereby affording helical superstructures, depending on the geometry of building units. In addition, the Au···Cu interactions altered the luminescence properties and induced the emergence and amplification of circularly polarized luminescence. This work, for the first time, revealed the role of Au···Cu metallophilic interactions in modulating supramolecular chirality, paving the way for the construction of functional chiroptical materials based on d10 metal complexes.
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Affiliation(s)
- Ya-Jie Wang
- Henan
Key Laboratory of Crystalline Molecular Functional Materials, Henan
International Joint Laboratory of Tumor Theranostical Cluster Materials,
Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou450001, People’s Republic
of China
| | - Xiao-Yan Shi
- Henan
Key Laboratory of Crystalline Molecular Functional Materials, Henan
International Joint Laboratory of Tumor Theranostical Cluster Materials,
Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou450001, People’s Republic
of China
| | - Pengyao Xing
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan250100, People’s Republic
of China
| | - Shuang-Quan Zang
- Henan
Key Laboratory of Crystalline Molecular Functional Materials, Henan
International Joint Laboratory of Tumor Theranostical Cluster Materials,
Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou450001, People’s Republic
of China
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10
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Tang X, Liao X, Cai X, Wu J, Wu X, Zhang Q, Yan Y, Zheng S, Jiang H, Fan J, Cai S, Zhang W, Liu Y. Self-Assembly of Helical Nanofibrous Chiral Covalent Organic Frameworks. Angew Chem Int Ed Engl 2023; 62:e202216310. [PMID: 36445778 DOI: 10.1002/anie.202216310] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 11/30/2022]
Abstract
Despite significant progress on the design and synthesis of covalent organic frameworks (COFs), precise control over microstructures of such materials remains challenging. Herein, two chiral COFs with well-defined one-handed double-helical nanofibrous morphologies were constructed via an unprecedented template-free method, capitalizing on the diastereoselective formation of aminal linkages. Detailed time-dependent experiments reveal the spontaneous transformation of initial rod-like aggregates into the double-helical microstructures. We have further demonstrated that the helical chirality and circular dichroism signal can be facilely inversed by simply adjusting the amount of acetic acid during synthesis. Moreover, by transferring chirality to achiral fluorescent molecular adsorbents, the helical COF nanostructures can effectively induce circularly polarized luminescence with the highest luminescent asymmetric factor (glum ) up to ≈0.01.
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Affiliation(s)
- Xihao Tang
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Xiangji Liao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xinting Cai
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Jialin Wu
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Xueying Wu
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Qianni Zhang
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Yilun Yan
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Shengrun Zheng
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China.,SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan, 511517, China
| | - Huawei Jiang
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China.,SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan, 511517, China
| | - Jun Fan
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China.,SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan, 511517, China
| | - Songliang Cai
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China.,SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan, 511517, China
| | - Weiguang Zhang
- GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, and Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China.,SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan, 511517, China
| | - Yi Liu
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA-94720, USA
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11
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Estaun-Panzano J, Arotcarena ML, Bezard E. Monitoring α-synuclein aggregation. Neurobiol Dis 2023; 176:105966. [PMID: 36527982 PMCID: PMC9875312 DOI: 10.1016/j.nbd.2022.105966] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Synucleinopathies, including Parkinson's disease (PD), dementia with Lewy Bodies (DLB), and multiple system atrophy (MSA), are characterized by the misfolding and subsequent aggregation of alpha-synuclein (α-syn) that accumulates in cytoplasmic inclusions bodies in the cells of affected brain regions. Since the seminal report of likely-aggregated α-syn presence within the Lewy bodies by Spillantini et al. in 1997, the keyword "synuclein aggregation" has appeared in over 6000 papers (Source: PubMed October 2022). Studying, observing, describing, and quantifying α-syn aggregation is therefore of paramount importance, whether it happens in tubo, in vitro, in post-mortem samples, or in vivo. The past few years have witnessed tremendous progress in understanding aggregation mechanisms and identifying various polymorphs. In this context of growing complexity, it is of utmost importance to understand what tools we possess, what exact information they provide, and in what context they may be applied. Nonetheless, it is also crucial to rationalize the relevance of the information and the limitations of these methods for gauging the final result. In this review, we present the main techniques that have shaped the current views about α-syn structure and dynamics, with particular emphasis on the recent breakthroughs that may change our understanding of synucleinopathies.
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Affiliation(s)
| | | | - Erwan Bezard
- Univ. Bordeaux, CNRS, IMN, UMR 5293, F-33000 Bordeaux, France; Motac Neuroscience Ltd, Manchester, United Kingdom.
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12
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pH and Salt-Assisted Macroscopic Chirality Inversion of Gadolinium Coordination Polymer. Molecules 2022; 28:molecules28010163. [PMID: 36615357 PMCID: PMC9821918 DOI: 10.3390/molecules28010163] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
The precise adjustment of handedness of helical architectures is important to regulate their functions. Macroscopic chirality inversion has been achieved in organic supramolecular systems by pH, metal ions, solvents, chiral and non-chiral additives, temperature, and light, but rarely in coordination polymers (CPs). In particular, salt-assisted macroscopic chirality inversion has not been reported. In this work, we carried out a systematic investigation on the role of pH and salt in regulating the morphology of CPs based on Gd(NO3)3 and R-(1-phenylethylamino)methylphosphonic acid (R-pempH2). Without extra NO3-, the chirality inversion from the left-handed superhelix R-M to the right-handed superhelix R-P can be achieved by pH modulation from 3.2 to 3.8. The addition of NaNO3 (2.0 eq) at pH 3.8 results in an inversion of chiral sense from R-P to R-M as a pure phase. To our knowledge, this is the first example of salt-assisted macroscopic helical inversion in artificial systems.
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13
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Sato H, Yamagishi A, Shimizu M, Watanabe K, Koshoubu J, Yoshida J, Kawamura I. Mapping of Supramolecular Chirality in Insect Wings by Microscopic Vibrational Circular Dichroism Spectroscopy: Heterogeneity in Protein Distribution. J Phys Chem Lett 2021; 12:7733-7737. [PMID: 34355918 DOI: 10.1021/acs.jpclett.1c01949] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The supramolecular chirality of the hindwing of Anomala albopilosa (male) was investigated using a microscopic vibrational circular dichroism (VCD) system, denoted as MultiD-VCD. The source of intense infrared (IR) light for the system was a quantum cascade laser. Two-dimensional maps of IR and VCD spectra were taken by scanning the surface area (ca. 2 mm × 2 mm) of the insect hindwing tissue. The spectra ranged from 1500 to 1700 cm-1, and the maps have a spatial resolution of 100 μm. The distribution of proteins, including their supramolecular structures, was analyzed from the location-dependent spectral shape of the VCD bands assigned to amides I and II. The results revealed that the hindwing consists of segregated domains of proteins with different secondary structures: an α-helix (in one part of the membrane), a hybrid of α-helix and β-sheet (in another part of the membrane), and a coil (in a vein).
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Affiliation(s)
- Hisako Sato
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-chou, Matsuyama, Ehime 790-8577, Japan
| | - Akihiko Yamagishi
- Department of Medicine, Faculty of Medicine, Toho University, Ota-ku 143-8540, Japan
| | - Masaru Shimizu
- JASCO Corporation, Ishikawa 2967-5, Hachioji, Tokyo 192-8537, Japan
| | - Keisuke Watanabe
- JASCO Corporation, Ishikawa 2967-5, Hachioji, Tokyo 192-8537, Japan
| | - Jun Koshoubu
- JASCO Corporation, Ishikawa 2967-5, Hachioji, Tokyo 192-8537, Japan
| | - Jun Yoshida
- Department of Chemistry, College of Humanities & Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Izuru Kawamura
- Graduate School of Engineering Science, Yokohama National University, Hodogaya-ku, Yokohama 240-8501, Japan
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14
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Yamagishi H, Sato H, Kawamura I. Vibrational circular dichroism of D-amino acid-containing peptide NdWFamide in the crystal form. Chirality 2021; 33:652-659. [PMID: 34313360 DOI: 10.1002/chir.23343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/02/2021] [Accepted: 07/08/2021] [Indexed: 01/31/2023]
Abstract
Microcrystals of l-Asn-d-Trp-l-Phe-NH2 (NdWFamide), a tripeptide derived from Aplysia kurodai that exhibits invertebrate cardiac activity, were evaluated by vibrational circular dichroism (VCD). The chirality of the tryptophan residue at the second position in NdWFamide was associated with the conformation and biological characteristics. The VCD spectrum of NdWFamide was a mirror image of its enantiomer; however, it was significantly different from that of its diastereomer, NWFamide, which is its precursor. The obtained VCD signals of NdWFamide were in good agreement with the VCD signals that were calculated based on the optimized aggregates of NdWFamide, which formed a helical-like backbone conformation. The evaluation of the VCD results revealed the conformation of NdWFamide in the crystalline state and succeeded in distinguishing its stereoisomers. Therefore, this study demonstrates VCD as a useful method for the structural analysis of naturally occurring d-amino acid-containing peptides.
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Affiliation(s)
- Hiroki Yamagishi
- Graduate School of Engineering Science, Yokohama National University, Yokohama, Japan
| | - Hisako Sato
- Graduate School of Science and Engineering, Ehime University, Matsuyama, Japan
| | - Izuru Kawamura
- Graduate School of Engineering Science, Yokohama National University, Yokohama, Japan
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15
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Bisi N, Feni L, Peqini K, Pérez-Peña H, Ongeri S, Pieraccini S, Pellegrino S. α-Synuclein: An All-Inclusive Trip Around its Structure, Influencing Factors and Applied Techniques. Front Chem 2021; 9:666585. [PMID: 34307295 PMCID: PMC8292672 DOI: 10.3389/fchem.2021.666585] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/02/2021] [Indexed: 12/15/2022] Open
Abstract
Alpha-synuclein (αSyn) is a highly expressed and conserved protein, typically found in the presynaptic terminals of neurons. The misfolding and aggregation of αSyn into amyloid fibrils is a pathogenic hallmark of several neurodegenerative diseases called synucleinopathies, such as Parkinson’s disease. Since αSyn is an Intrinsically Disordered Protein, the characterization of its structure remains very challenging. Moreover, the mechanisms by which the structural conversion of monomeric αSyn into oligomers and finally into fibrils takes place is still far to be completely understood. Over the years, various studies have provided insights into the possible pathways that αSyn could follow to misfold and acquire oligomeric and fibrillar forms. In addition, it has been observed that αSyn structure can be influenced by different parameters, such as mutations in its sequence, the biological environment (e.g., lipids, endogenous small molecules and proteins), the interaction with exogenous compounds (e.g., drugs, diet components, heavy metals). Herein, we review the structural features of αSyn (wild-type and disease-mutated) that have been elucidated up to present by both experimental and computational techniques in different environmental and biological conditions. We believe that this gathering of current knowledge will further facilitate studies on αSyn, helping the planning of future experiments on the interactions of this protein with targeting molecules especially taking into consideration the environmental conditions.
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Affiliation(s)
- Nicolò Bisi
- BioCIS, CNRS, Université Paris Saclay, Châtenay-Malabry Cedex, France
| | - Lucia Feni
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Milan, Italy
| | - Kaliroi Peqini
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Milan, Italy
| | - Helena Pérez-Peña
- Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
| | - Sandrine Ongeri
- BioCIS, CNRS, Université Paris Saclay, Châtenay-Malabry Cedex, France
| | | | - Sara Pellegrino
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Milan, Italy
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16
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Huntington TE, Srinivasan R. Adeno-Associated Virus Expression of α-Synuclein as a Tool to Model Parkinson's Disease: Current Understanding and Knowledge Gaps. Aging Dis 2021; 12:1120-1137. [PMID: 34221553 PMCID: PMC8219504 DOI: 10.14336/ad.2021.0517] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/16/2021] [Indexed: 12/12/2022] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder in the aging population and is characterized by a constellation of motor and non-motor symptoms. The abnormal aggregation and spread of alpha-synuclein (α-syn) is thought to underlie the loss of dopaminergic (DA) neurons in the substantia nigra pars compacta (SNc), leading to the development of PD. It is in this context that the use of adeno-associated viruses (AAVs) to express a-syn in the rodent midbrain has become a popular tool to model SNc DA neuron loss during PD. In this review, we summarize results from two decades of experiments using AAV-mediated a-syn expression in rodents to model PD. Specifically, we outline aspects of AAV vectors that are particularly relevant to modeling a-syn dysfunction in rodent models of PD such as changes in striatal neurochemistry, a-syn biochemistry, and PD-related behaviors resulting from AAV-mediated a-syn expression in the midbrain. Finally, we discuss the emerging role of astrocytes in propagating a-syn pathology, and point to future directions for employing AAVs as a tool to better understand how astrocytes contribute to a-syn pathology during the development of PD. We envision that lessons learned from two decades of utilizing AAVs to express a-syn in the rodent brain will enable us to develop an optimized set of parameters for gaining a better understanding of how a-syn leads to the development of PD.
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Affiliation(s)
- Taylor E Huntington
- Department of Neuroscience & Experimental Therapeutics, Texas A&M University College of Medicine, 8447 Riverside Pkwy, Bryan, TX 77807, USA.
- Texas A&M Institute for Neuroscience (TAMIN), College Station, TX 77843, USA
| | - Rahul Srinivasan
- Department of Neuroscience & Experimental Therapeutics, Texas A&M University College of Medicine, 8447 Riverside Pkwy, Bryan, TX 77807, USA.
- Texas A&M Institute for Neuroscience (TAMIN), College Station, TX 77843, USA
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17
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Gogoi A, Konwer S, Zhuo GY. Polarimetric Measurements of Surface Chirality Based on Linear and Nonlinear Light Scattering. Front Chem 2021; 8:611833. [PMID: 33644001 PMCID: PMC7902787 DOI: 10.3389/fchem.2020.611833] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/31/2020] [Indexed: 01/21/2023] Open
Abstract
A molecule, molecular aggregate, or protein that cannot be superimposed on its mirror image presents chirality. Most living systems are organized by chiral building blocks, such as amino acids, peptides, and carbohydrates, and any change in their molecular structure (i.e., handedness or helicity) alters the biochemical and pharmacological functions of the molecules, many of which take place at surfaces. Therefore, studying surface chirogenesis at the nanoscale is fundamentally important and derives various applications. For example, since proteins contain highly ordered secondary structures, the intrinsic chirality can be served as a signature to measure the dynamics of protein adsorption and protein conformational changes at biological surfaces. Furthermore, a better understanding of chiral recognition and separation at bio-nanointerfaces is helpful to standardize chiral drugs and monitor the synthesis of adsorbents with high precision. Thus, exploring the changes in surface chirality with polarized excitations would provide structural and biochemical information of the adsorbed molecules, which has led to the development of label-free and noninvasive measurement tools based on linear and nonlinear optical effects. In this review, the principles and selected applications of linear and nonlinear optical methods for quantifying surface chirality are introduced and compared, aiming to conceptualize new ideas to address critical issues in surface biochemistry.
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Affiliation(s)
- Ankur Gogoi
- Department of Physics, Jagannath Barooah College, Jorhat, India
| | - Surajit Konwer
- Department of Chemistry, Dibrugarh University, Dibrugarh, India
| | - Guan-Yu Zhuo
- Institute of New Drug Development, China Medical University, Taichung, Taiwan.,Integrative Stem Cell Center, China Medical University Hospital, Taichung, Taiwan
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18
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Liu Z, Huang X, Jiang Z, Tuo X. Investigation of the binding properties between levamlodipine and HSA based on MCR-ALS and computer modeling. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118929. [PMID: 32961448 DOI: 10.1016/j.saa.2020.118929] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/26/2020] [Accepted: 09/05/2020] [Indexed: 06/11/2023]
Abstract
Levamlodipine (LEE) is a drug commonly used for antihypertensive treatment in clinical therapy. The overlapping fluorescence spectra of LEE and human serum albumin (HSA) cause some trouble in analysis of interactions between them by using the classic fluorescence method. Here, the multivariate curve resolution-alternating least squares (MCR-ALS) approach was used to overcome this disadvantage. Meanwhile, the binding properties of LEE-HSA complex were then explored through computer modeling. The MCR-ALS results suggested that LEE-HSA complex was present in the mixture solution of LEE and HSA. This conclusion was then confirmed by the Stern-Volmer equation and time-resolved fluorescence experiment. The binding constant (Ka) was 2.139 × 104 L·mol-1 at 298 K. LEE was located close to the Trp-214 residue of HSA, with van der Waals forces and hydrogen bonding as main driving forces for this interaction. LEE can alter the conformation of HSA, in which the content of α-helix reduced from 57.2% to 52.3%. The Pi-Alkyl interactions contributed to maintaining the stability of the LEE-HSA complex. The results of molecular dynamics simulations showed that LEE-HSA complex was formed within 5 ns, and the particle size (Rg) of HSA was altered by the binding reaction. This study would promote better understanding of the transportation and distribution mechanisms of LEE in the human body.
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Affiliation(s)
- Zhaoqing Liu
- College of Chemistry, Nanchang University, Nanchang 330031, Jiangxi, China
| | - Xiaojian Huang
- School of Pharmacy, Nanchang University, Nanchang 330031, Jiangxi, China
| | - Zheng Jiang
- School of Pharmacy, Nanchang University, Nanchang 330031, Jiangxi, China
| | - Xun Tuo
- College of Chemistry, Nanchang University, Nanchang 330031, Jiangxi, China.
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19
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Kurochka A, Průša J, Kessler J, Kapitán J, Bouř P. α-Synuclein conformations followed by vibrational optical activity. Simulation and understanding of the spectra. Phys Chem Chem Phys 2021; 23:16635-16645. [DOI: 10.1039/d1cp02574k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For α-synuclein novel structural markers were identified in vibrational optical activity spectra and supported by theoretical modeling.
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Affiliation(s)
- Andrii Kurochka
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences
- 16610 Prague
- Czech Republic
- Department of Analytical Chemistry
| | - Jiří Průša
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences
- 16610 Prague
- Czech Republic
- Department of Analytical Chemistry
| | - Jiří Kessler
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences
- 16610 Prague
- Czech Republic
| | - Josef Kapitán
- Department of Optics
- Palacký University Olomouc
- Olomouc
- Czech Republic
| | - Petr Bouř
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences
- 16610 Prague
- Czech Republic
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20
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Beniazza R, Bayo N, Jardel D, Rust R, Mao B, Divoux T, Schmutz M, Castet F, Raffy G, Del Guerzo A, McClenaghan ND, Buffeteau T, Vincent JM. A fluorous sodium l-prolinate derivative as low molecular weight gelator for perfluorocarbons. Chem Commun (Camb) 2020; 56:8655-8658. [PMID: 32602483 DOI: 10.1039/d0cc02446e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report the first study dealing with the self-assembly of an α-amino acid derivative in perfluorocarbons. Rheology, microscopy, and spectroscopy studies reveal that the fluorous sodium l-prolinate derivative 1 self-assembles in perfluorocarbons to form a three-dimensional network of left-handed nano-helices resulting in solvent gelation. Singlet oxygen lifetime measured in a gel of perfluorodecalin is about 1000 times longer than in pure water.
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Affiliation(s)
- Redouane Beniazza
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France. and Mohammed VI Polytechnic University, UM6P, 43150 Ben Guerir, Morocco
| | - Natalia Bayo
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - Damien Jardel
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - Ruben Rust
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - Bosi Mao
- Centre de Recherche Paul Pascal, CNRS UMR 5031 - Université de Bordeaux, 115 Avenue Dr. Schweitzer, 33600 Pessac, France
| | - Thibaut Divoux
- Centre de Recherche Paul Pascal, CNRS UMR 5031 - Université de Bordeaux, 115 Avenue Dr. Schweitzer, 33600 Pessac, France and MultiScale Material Science for Energy and Environment, UMI 3466, CNRS-MIT, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Marc Schmutz
- Université de Strasbourg, CNRS, Institut Charles Sadron, UPR22, F67000 Strasbourg, France
| | - Frédéric Castet
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - Guillaume Raffy
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - André Del Guerzo
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - Nathan D McClenaghan
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
| | - Jean-Marc Vincent
- Institut des Sciences Moléculaires, CNRS UMR 5255, Univ. Bordeaux, 33405 Talence, France.
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21
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Chen Y, Peng F, Su T, Yang H, Qiu F. Direct Identification of Amyloid Peptide Fragments in Human α-Synuclein Based on Consecutive Hydrophobic Amino Acids. ACS OMEGA 2020; 5:11677-11686. [PMID: 32478258 PMCID: PMC7254785 DOI: 10.1021/acsomega.0c00979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/04/2020] [Indexed: 02/08/2023]
Abstract
![]()
Formation of amyloid fibrils by misfolding
α-synuclein is
a characteristic feature of Parkinson’s disease, but the exact
molecular mechanism of this process has long been an unresolved mystery.
Identification of critical amyloid peptide fragments from α-synuclein
may hold the key to decipher this mystery. Focusing on consecutive
hydrophobic amino acids (CHAA) in the protein sequence, in this study
we proposed a sequence-based strategy for direct identification of
amyloid peptide fragments in α-synuclein. We picked out three
CHAA fragments (two hexapeptides and one tetrapeptide) from α-synuclein
and studied their amyloidogenic property. The thioflavin-T binding
test, transmission electron microscopy, Congo red staining, and Fourier
transform infrared spectroscopy revealed that although only hexapeptides
could undergo amyloid aggregation on their own, extended peptide fragments
based on any of the three peptides could form typical amyloid fibrils.
Primary amyloidogenic fragments based on the three peptides showed
synergetic aggregation behavior and could accelerate the aggregation
of full-length α-synuclein. It was proved that hydrophobic interaction
played a predominant role for the aggregation of these peptides and
full-length α-synuclein. A central alanine-to-lysine substitution
in each hydrophobic fragment completely eliminated the peptides’
amyloidogenic property, and alanine-to-lysine substitutions at corresponding
sites in full-length α-synuclein also decreased the protein’s
amyloidogenic potency. These findings suggested that CHAA fragments
were potentially amyloidogenic and played an important role for the
aggregation of α-synuclein. The identification of these fragments
might provide helpful information for eventually clarifying the molecular
mechanism of α-synuclein aggregation. On the other hand, our
study suggested that the CHAA fragment might be a simple motif for
direct sequence-based identification of amyloid peptides.
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Affiliation(s)
- Yongzhu Chen
- Laboratory of Anesthesia and Critical Care Medicine, Translational Neuroscience Center and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- Periodical Press of West China Hospital, Sichuan University, Chengdu 610041, China
| | - Fei Peng
- Laboratory of Anesthesia and Critical Care Medicine, Translational Neuroscience Center and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Tao Su
- West China-Washington Mitochondria and Metabolism Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hao Yang
- Key Lab of Transplant Engineering and Immunology, MOH, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Feng Qiu
- Laboratory of Anesthesia and Critical Care Medicine, Translational Neuroscience Center and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
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22
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Martial B, Raîche-Marcoux G, Lefèvre T, Audet P, Voyer N, Auger M. Structure of a Parkinson’s Disease-Involved α-Synuclein Peptide Is Modulated by Membrane Composition and Physical State. J Phys Chem B 2020; 124:3469-3481. [DOI: 10.1021/acs.jpcb.0c00945] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Benjamin Martial
- Department of Chemistry, Regroupement québécois de recherche sur la fonction, l’ingénierie et les applications des protéines (PROTEO), Centre de recherche sur les matériaux avancés (CERMA), Centre québécois sur les matériaux fonctionnels (CQMF), Université Laval, 1045 avenue de la médecine, Québec, Quebec G1V 0A6, Canada
| | - Gabrielle Raîche-Marcoux
- Department of Chemistry, Regroupement québécois de recherche sur la fonction, l’ingénierie et les applications des protéines (PROTEO), Centre de recherche sur les matériaux avancés (CERMA), Centre québécois sur les matériaux fonctionnels (CQMF), Université Laval, 1045 avenue de la médecine, Québec, Quebec G1V 0A6, Canada
| | - Thierry Lefèvre
- Department of Chemistry, Regroupement québécois de recherche sur la fonction, l’ingénierie et les applications des protéines (PROTEO), Centre de recherche sur les matériaux avancés (CERMA), Centre québécois sur les matériaux fonctionnels (CQMF), Université Laval, 1045 avenue de la médecine, Québec, Quebec G1V 0A6, Canada
| | - Pierre Audet
- Department of Chemistry, Université Laval, 1045 avenue de la médecine, Québec, Quebec G1V 0A6, Canada
| | - Normand Voyer
- Department of Chemistry, Regroupement québécois de recherche sur la fonction, l’ingénierie et les applications des protéines (PROTEO), Université Laval, 1045 avenue de la médecine, Québec, Quebec G1V 0A6, Canada
| | - Michèle Auger
- Department of Chemistry, Regroupement québécois de recherche sur la fonction, l’ingénierie et les applications des protéines (PROTEO), Centre de recherche sur les matériaux avancés (CERMA), Centre québécois sur les matériaux fonctionnels (CQMF), Université Laval, 1045 avenue de la médecine, Québec, Quebec G1V 0A6, Canada
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23
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Keiderling TA. Structure of Condensed Phase Peptides: Insights from Vibrational Circular Dichroism and Raman Optical Activity Techniques. Chem Rev 2020; 120:3381-3419. [DOI: 10.1021/acs.chemrev.9b00636] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Timothy A. Keiderling
- Department of Chemistry, University of Illinois at Chicago 845 West Taylor Street m/c 111, Chicago, Illinois 60607-7061, United States
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Nafie LA. Vibrational optical activity: From discovery and development to future challenges. Chirality 2020; 32:667-692. [DOI: 10.1002/chir.23191] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/21/2020] [Accepted: 01/23/2020] [Indexed: 12/13/2022]
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25
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Bernal-Conde LD, Ramos-Acevedo R, Reyes-Hernández MA, Balbuena-Olvera AJ, Morales-Moreno ID, Argüero-Sánchez R, Schüle B, Guerra-Crespo M. Alpha-Synuclein Physiology and Pathology: A Perspective on Cellular Structures and Organelles. Front Neurosci 2020; 13:1399. [PMID: 32038126 PMCID: PMC6989544 DOI: 10.3389/fnins.2019.01399] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/12/2019] [Indexed: 12/21/2022] Open
Abstract
Alpha-synuclein (α-syn) is localized in cellular organelles of most neurons, but many of its physiological functions are only partially understood. α-syn accumulation is associated with Parkinson's disease, dementia with Lewy bodies, and multiple system atrophy as well as other synucleinopathies; however, the exact pathomechanisms that underlie these neurodegenerative diseases remain elusive. In this review, we describe what is known about α-syn function and pathophysiological changes in different cellular structures and organelles, including what is known about its behavior as a prion-like protein. We summarize current knowledge of α-syn and its pathological forms, covering its effect on each organelle, including aggregation and toxicity in different model systems, with special interest on the mitochondria due to its relevance during the apoptotic process of dopaminergic neurons. Moreover, we explore the effect that α-syn exerts by interacting with chromatin remodeling proteins that add or remove histone marks, up-regulate its own expression, and resume the impairment that α-syn induces in vesicular traffic by interacting with the endoplasmic reticulum. We then recapitulate the events that lead to Golgi apparatus fragmentation, caused by the presence of α-syn. Finally, we report the recent findings about the accumulation of α-syn, indirectly produced by the endolysosomal system. In conclusion, many important steps into the understanding of α-syn have been made using in vivo and in vitro models; however, the time is right to start integrating observational studies with mechanistic models of α-syn interactions, in order to look at a more complete picture of the pathophysiological processes underlying α-synucleinopathies.
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Affiliation(s)
- Luis D. Bernal-Conde
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Laboratorio de Medicina Regenerativa, Departamento de Cirugía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rodrigo Ramos-Acevedo
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Laboratorio de Medicina Regenerativa, Departamento de Cirugía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Mario A. Reyes-Hernández
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Laboratorio de Medicina Regenerativa, Departamento de Cirugía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Andrea J. Balbuena-Olvera
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Laboratorio de Medicina Regenerativa, Departamento de Cirugía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Ishbelt D. Morales-Moreno
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Laboratorio de Medicina Regenerativa, Departamento de Cirugía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rubén Argüero-Sánchez
- Laboratorio de Medicina Regenerativa, Departamento de Cirugía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Birgitt Schüle
- Department of Pathology, Stanford School of Medicine, Stanford University, Stanford, CA, United States
| | - Magdalena Guerra-Crespo
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Laboratorio de Medicina Regenerativa, Departamento de Cirugía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
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26
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Sato H. A new horizon for vibrational circular dichroism spectroscopy: a challenge for supramolecular chirality. Phys Chem Chem Phys 2020; 22:7671-7679. [DOI: 10.1039/d0cp00713g] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The development of the solid state and time-step VCD methods opened a new horizon to reveal the mechanism of chirality amplification from microscopic to supramolecular scales.
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Affiliation(s)
- Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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27
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Wang J, Jia J, Wang Y, Xing Q, Peng X, Qi W, Su R, He Z. Protamine-induced condensation of peptide nanofilaments into twisted bundles with controlled helical geometry. J Pept Sci 2019; 25:e3176. [PMID: 31309673 DOI: 10.1002/psc.3176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/22/2019] [Accepted: 05/04/2019] [Indexed: 12/12/2022]
Abstract
Chiral self-assembly of peptides is of fundamental interest in the field of biology and material science. Protamine, an alkaline biomacromolecule which is ubiquitous in fish and mammalian, plays crucial roles in directing the helical twisting of DNA. Inspired by this, we reported a bioinspired pathway to direct the hierarchical chiral self-assembly of a short synthetic dipeptide. The peptide could self-assemble into negatively charged chiral micelles in water that spontaneously formed a nematic liquid crystalline phase. By incorporation with protamine, the micelles condensed with the protamine into large helical bundles with precisely controlled diameter. Furthermore, to simulate the intracellular environments, we investigated macromolecular crowding on the coassembly of peptide and protamine, which leads to the formation of much thinner helical structures. The results highlight the roles of highly charged biomacromolecules and macromolecular crowding on peptide self-assembly, which are beneficial for the practical applications of self-assembling peptides in biomedicine and sensing.
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Affiliation(s)
- Jiahui Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Jiajia Jia
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Yuefei Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China.,Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin, 300072, PR China
| | - Qiguo Xing
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Xin Peng
- School of Life Sciences, Tianjin University, Tianjin, 300072, PR China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China.,Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin, 300072, PR China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China.,Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin, 300072, PR China
| | - Zhimin He
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
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28
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Jiang Y, Wang C, Lu G, Zhao L, Gong L, Wang T, Qi D, Chen Y, Jiang J. Compartmentalization within Nanofibers of Double‐Decker Phthalocyanine Induces High‐Performance Sensing in both Aqueous Solution and the Gas Phase. Chemistry 2019; 25:16207-16213. [DOI: 10.1002/chem.201903553] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/30/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Yuying Jiang
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
| | - Chiming Wang
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
| | - Guang Lu
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
| | - Luyang Zhao
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
| | - Lei Gong
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
| | - Tianyu Wang
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
| | - Dongdong Qi
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
| | - Yanli Chen
- School of ScienceChina University of Petroleum (East China) Qingdao 266580 China
| | - Jianzhuang Jiang
- Department of ChemistryBeijing Key Laboratory for Science and Application of Functional Molecular and Crystalline MaterialsUniversity of Science and Technology Beijing Beijing 100083 China
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29
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Slocik JM, Dennis PB, Govorov AO, Bedford NM, Ren Y, Naik RR. Chiral Restructuring of Peptide Enantiomers on Gold Nanomaterials. ACS Biomater Sci Eng 2019; 6:2612-2620. [PMID: 33463283 DOI: 10.1021/acsbiomaterials.9b00933] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The use of biomolecules has been invaluable at generating and controlling optical chirality in nanomaterials; however, the structure and properties of the chiral biotemplate are not well understood due to the complexity of peptide-nanoparticle interactions. In this study, we show that the complex interactions between d-peptides and gold nanomaterials led to a chiral restructuring of peptides as demonstrated by circular dichroism and proteolytic cleavage of d-peptides via gold-mediated inversion of peptide chirality. The gold nanoparticles synthesized using d-peptide produce a highly ordered atomic surface and restructured peptide bonds for enzyme cleavage. Differences in gold nanoparticle catalyzed reduction of 4-nitrophenol were observed on the basis of the chiral peptide used in nanoparticle synthesis. Notably, the proteolytic cleavage of d-peptides on gold provides an opportunity for designing nanoparticle based therapeutics to treat peptide venoms, access new chemistries, or modulate the catalytic activity of nanomaterials.
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Affiliation(s)
- Joseph M Slocik
- Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Lab, Wright Patterson Air Force Base, Ohio 45433-7750, United States
| | - Patrick B Dennis
- Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Lab, Wright Patterson Air Force Base, Ohio 45433-7750, United States
| | - Alexander O Govorov
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, United States
| | - Nicholas M Bedford
- School of Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Yang Ren
- X-Ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Rajesh R Naik
- 711th Human Performance Wing, Air Force Research Lab, Wright Patterson Air Force Base, Ohio 45433-7750, United States
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30
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Tan J, Wang C, Lao HK, Wang W, Feng G, Yuan D, Wu C, Zhang X. Spiro[pyrrol-benzopyran]-based probe with high asymmetry for chiroptical sensing via circular dichroism. Chem Commun (Camb) 2019; 55:7438-7441. [DOI: 10.1039/c9cc02946j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We proposed an efficient approach to construct a novel spiro[pyrrol-benzopyran] scaffold with high asymmetry for reaction-based chiroptical sensing via circular dichroism.
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Affiliation(s)
- Jingyun Tan
- Cancer Centre
- Faculty of Health Sciences
- University of Macau
- Macau SAR
- China
| | - Chunfei Wang
- Cancer Centre
- Faculty of Health Sciences
- University of Macau
- Macau SAR
- China
| | - Hio Kuan Lao
- Cancer Centre
- Faculty of Health Sciences
- University of Macau
- Macau SAR
- China
| | - Wenjing Wang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou 350002
- China
| | - Gang Feng
- Cancer Centre
- Faculty of Health Sciences
- University of Macau
- Macau SAR
- China
| | - Daqiang Yuan
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou 350002
- China
| | - Changfeng Wu
- Department of Biomedical Engineering
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Xuanjun Zhang
- Cancer Centre
- Faculty of Health Sciences
- University of Macau
- Macau SAR
- China
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