1
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Cantelli A, Malferrari M, Mattioli EJ, Marconi A, Mirra G, Soldà A, Marforio TD, Zerbetto F, Rapino S, Di Giosia M, Calvaresi M. Enhanced Uptake and Phototoxicity of C 60@albumin Hybrids by Folate Bioconjugation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193501. [PMID: 36234629 PMCID: PMC9565331 DOI: 10.3390/nano12193501] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/23/2022] [Accepted: 09/28/2022] [Indexed: 06/12/2023]
Abstract
Fullerenes are considered excellent photosensitizers, being highly suitable for photodynamic therapy (PDT). A lack of water solubility and low biocompatibility are, in many instances, still hampering the full exploitation of their potential in nanomedicine. Here, we used human serum albumin (HSA) to disperse fullerenes by binding up to five fullerene cages inside the hydrophobic cavities. Albumin was bioconjugated with folic acid to specifically address the folate receptors that are usually overexpressed in several solid tumors. Concurrently, tetramethylrhodamine isothiocyanate, TRITC, a tag for imaging, was conjugated to C60@HSA in order to build an effective phototheranostic platform. The in vitro experiments demonstrated that: (i) HSA disperses C60 molecules in a physiological environment, (ii) HSA, upon C60 binding, maintains its biological identity and biocompatibility, (iii) the C60@HSA complex shows a significant visible-light-induced production of reactive oxygen species, and (iv) folate bioconjugation improves both the internalization and the PDT-induced phototoxicity of the C60@HSA complex in HeLa cells.
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2
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Kop TJ, Bjelaković MS, Živković L, Žekić A, Milić DR. Stable colloidal dispersions of fullerene C60, curcumin and C60-curcumin in water as potential antioxidants. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Marforio TD, Calza A, Mattioli EJ, Zerbetto F, Calvaresi M. Dissecting the Supramolecular Dispersion of Fullerenes by Proteins/Peptides: Amino Acid Ranking and Driving Forces for Binding to C 60. Int J Mol Sci 2021; 22:ijms222111567. [PMID: 34768997 PMCID: PMC8583719 DOI: 10.3390/ijms222111567] [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: 10/10/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 01/05/2023] Open
Abstract
Molecular dynamics simulations were used to quantitatively investigate the interactions between the twenty proteinogenic amino acids and C60. The conserved amino acid backbone gave a constant energetic interaction ~5.4 kcal mol−1, while the contribution to the binding due to the amino acid side chains was found to be up to ~5 kcal mol−1 for tryptophan but lower, to a point where it was slightly destabilizing, for glutamic acid. The effects of the interplay between van der Waals, hydrophobic, and polar solvation interactions on the various aspects of the binding of the amino acids, which were grouped as aromatic, charged, polar and hydrophobic, are discussed. Although π–π interactions were dominant, surfactant-like and hydrophobic effects were also observed. In the molecular dynamics simulations, the interacting residues displayed a tendency to visit configurations (i.e., regions of the Ramachandran plot) that were absent when C60 was not present. The amino acid backbone assumed a “tepee-like” geometrical structure to maximize interactions with the fullerene cage. Well-defined conformations of the most interactive amino acids (Trp, Arg, Met) side chains were identified upon C60 binding.
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4
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Demir E, Nedzvetsky VS, Ağca CA, Kirici M. Pristine C 60 Fullerene Nanoparticles Ameliorate Hyperglycemia-Induced Disturbances via Modulation of Apoptosis and Autophagy Flux. Neurochem Res 2020; 45:2385-2397. [PMID: 32712876 DOI: 10.1007/s11064-020-03097-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/09/2020] [Accepted: 07/11/2020] [Indexed: 12/18/2022]
Abstract
Diabetes mellitus is a prevalent metabolic disorder associated with multiple complications including neuropathy, memory loss and cognitive decline. Despite a long history of studies on diabetic complications, there are no effective therapeutic strategies for neuroprotection in diabetes. Hyperglycemia-induced imbalance in programmed cell death could initiate a decline in neural tissue cells viability. Various nanomaterials can induce either cell death or cell survival dependent on the type and surface features. Pristine C60 fullerene is a nontoxic nanomaterial, which exhibits antioxidant and cytoprotective properties. However, the precise molecular mechanism with which the C60 nanoparticle exerts cytoprotective effect in diabetic subjects has not yet been fully addressed. Thus, this study aimed to determine whether C60 fullerene prevents oxidative stress impairment and to explore the effects of C60 fullerene on apoptosis and autophagy in diabetes mellitus to clarify its potential mechanisms. These effects have been examined for olive oil extracted C60 fullerene on the hippocampus of STZ diabetic rats. Up-regulation of Caspase-3, Beclin-1 and oxidative stress indexes and down-regulation of Bcl-2 were observed in the brain of STZ-diabetic rats. The exposure to C60 fullerene for a period of 12 weeks ameliorate redox imbalance, hyperglycemia-induced disturbances in apoptosis and autophagy flux via modulation of Caspase-3, Bcl-2, Beclin-1 and LC3I/II contents. Furthermore, C60 fullerene ameliorated the LC3I/II ratio and prevented extremely increased autophagy flux. Contrarily, pristine C60 fullerene had no modulatory effect on all studied apoptotic and autophagy markers in non-diabetic groups. Therefore, oil extracted C60 fullerene exhibits cytoprotective effect in hyperglycemia-stressed hippocampal cells. The presented results confirm that pristine C60 fullerene nanoparticles can protect hippocampal cells against hyperglycemic stress via anti-oxidant, anti-apoptotic effects and amelioration of autophagy flux. Moreover, C60 fullerene regulates a balance of autophagy via BCL-2/Beclin-1 reciprocal expression that could prevent functional disturbances in hippocampus.
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Affiliation(s)
- Ersin Demir
- Department of Agricultural Biotechnology, Faculty of Agriculture and Natural Sciences, Duzce University, 81620, Duzce, Turkey.
| | - Viktor S Nedzvetsky
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Bingol University, 12000, Bingöl, Turkey
- Oles Honchar Dnipro National University, Dnipro, 49050, Ukraine
| | - Can Ali Ağca
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Bingol University, 12000, Bingöl, Turkey
| | - Mahinur Kirici
- Department of Property Protection and Security, Bingol Social Sciences Vocational School, Bingol University, 12000, Bingöl, Turkey
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5
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Liutkus M, López-Andarias A, Mejías SH, López-Andarias J, Gil-Carton D, Feixas F, Osuna S, Matsuda W, Sakurai T, Seki S, Atienza C, Martín N, Cortajarena AL. Protein-directed crystalline 2D fullerene assemblies. NANOSCALE 2020; 12:3614-3622. [PMID: 31912074 DOI: 10.1039/c9nr07083d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Water soluble 2D crystalline monolayers of fullerenes grow on planar assemblies of engineered consensus tetratricopeptide repeat proteins. Designed fullerene-coordinating tyrosine clamps on the protein introduce specific fullerene binding sites, which facilitate fullerene nucleation. Through reciprocal interactions between the components, the hybrid material assembles into two-dimensional 2 nm thick structures with crystalline order, that conduct photo-generated charges. Thus, the protein-fullerene hybrid material is a demonstration of the developments toward functional materials with protein-based precision control of functional elements.
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Affiliation(s)
- Mantas Liutkus
- CIC biomaGUNE, Paseo de Miramón 182, E-20014 Donostia-San Sebastian, Spain.
| | - Alicia López-Andarias
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas. Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Sara H Mejías
- CIC biomaGUNE, Paseo de Miramón 182, E-20014 Donostia-San Sebastian, Spain.
| | - Javier López-Andarias
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas. Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - David Gil-Carton
- CIC bioGUNE; Bizkaia Science and Technology Park, building 800, E-48160, Derio, Spain
| | - Ferran Feixas
- CompBioLab Group, Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Carrer Maria Aurèlia Capmany 69, 17003 Girona, Spain
| | - Sílvia Osuna
- CompBioLab Group, Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Carrer Maria Aurèlia Capmany 69, 17003 Girona, Spain and Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Wakana Matsuda
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Japan
| | - Tsuneaki Sakurai
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Japan
| | - Carmen Atienza
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas. Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Nazario Martín
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas. Universidad Complutense de Madrid, E-28040 Madrid, Spain. and IMDEA-Nanoscience, Campus de Cantoblanco, E-28049 Madrid, Spain
| | - Aitziber L Cortajarena
- CIC biomaGUNE, Paseo de Miramón 182, E-20014 Donostia-San Sebastian, Spain. and Ikerbasque, Basque Foundation for Science, Mª Díaz de Haro 3, E-48013 Bilbao, Spain
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6
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Adsorptive Removal of Antibiotic Ciprofloxacin from Aqueous Solution Using Protein-Modified Nanosilica. Polymers (Basel) 2020; 12:polym12010057. [PMID: 31906267 PMCID: PMC7023575 DOI: 10.3390/polym12010057] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 12/02/2022] Open
Abstract
The present study aims to investigate adsorptive removal of molecular ciprofloxacin using protein-modified nanosilica (ProMNS). Protein was successfully extracted from Moringa seeds while nanosilica was synthesized from rice husk. Fourier-transform infrared (FTIR), ultraviolet visible (UV-Vis) and high-performance liquid chromatography (HPLC) were used to evaluate the characterization of protein. Adsorption of protein onto nanosilica at different pH and ionic strength was thoroughly studied to modify nanosilica surface. The removal efficiency of antibiotic ciprofloxacin (CFX) increased from 56.84% to 89.86% after surface modification with protein. Effective conditions for CFX removal using ProMNS were systematically optimized and found to be pH 7.0, adsorption time 90 min, adsorbent dosage 10 mg/mL, and ionic strength 1 mM KCl. A two-step model was successfully used to fit the adsorption isotherms of CFX onto ProMNS at different ionic strength while a pseudo-second-order model could fit adsorption kinetic of CFX onto ProMNS very well. Maximum adsorption capacity was very high that reached to 85 mg/g. Adsorption of CFX onto ProMNS decreased with increasing KCl concentration, suggesting that adsorption of CFX onto ProMNS is mainly controlled by electrostatic attraction between positively charged ProMNS surface and anionic species of CFX. Adsorption mechanisms of CFX onto ProMNS were discussed in detail based on adsorption isotherms, the change in surface charge by zeta potentail and the change in functional groups by FT-IR. The removal of CFX after three regenerations was greater than 73% while CFX removal from an actual hospital wastewater using ProMNS reached to 70%. Our results suggest that ProMNS is a new and eco-friendly adsorbent to remove antibiotics from aqueous solutions.
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7
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Di Giosia M, Nicolini F, Ferrazzano L, Soldà A, Valle F, Cantelli A, Marforio TD, Bottoni A, Zerbetto F, Montalti M, Rapino S, Tolomelli A, Calvaresi M. Stable and Biocompatible Monodispersion of C 60 in Water by Peptides. Bioconjug Chem 2019; 30:808-814. [PMID: 30616344 DOI: 10.1021/acs.bioconjchem.8b00916] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The lack of solubility in water and the formation of aggregates hamper many opportunities for technological exploitation of C60. Here, different peptides were designed and synthesized with the aim of monomolecular dispersion of C60 in water. Phenylalanines were used as recognizing moieties, able to interact with C60 through π-π stacking, while a varying number of glycines were used as spacers, to connect the two terminal phenylalanines. The best performance in the dispersion of C60 was obtained with the FGGGF peptidic nanotweezer at a pH of 12. A full characterization of this adduct was carried out. The peptides disperse C60 in water with high efficiency, and the solutions are stable for months both in pure water and in physiological environments. NMR measurements demonstrated the ability of the peptides to interact with C60. AFM measurements showed that C60 is monodispersed. Electrospray ionization mass spectrometry determined a stoichiometry of C60@(FGGGF)4. Molecular dynamics simulations showed that the peptides assemble around the C60 cage, like a candy in its paper wrapper, creating a supramolecular host able to accept C60 in the cavity. The peptide-wrapped C60 is fully biocompatible and the C60 "dark toxicity" is eliminated. C60@(FGGGF)4 shows visible light-induced reactive oxygen species (ROS) generation at physiological saline concentrations and reduction of the HeLa cell viability in response to visible light irradiation.
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Affiliation(s)
- Matteo Di Giosia
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Federica Nicolini
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Lucia Ferrazzano
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Alice Soldà
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Francesco Valle
- Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR , via Gobetti 101 , 40129 Bologna , Italy
| | - Andrea Cantelli
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Tainah Dorina Marforio
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Andrea Bottoni
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Francesco Zerbetto
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Marco Montalti
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Stefania Rapino
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Alessandra Tolomelli
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
| | - Matteo Calvaresi
- Dipartimento di Chimica "Giacomo Ciamician" , Alma Mater Studiorum - Università di Bologna , Via Francesco Selmi, 2 - 40126 Bologna , Italy
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8
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Lamas A, Guerra A, Amorín M, Granja JR. New self-assembling peptide nanotubes of large diameter using δ-amino acids. Chem Sci 2018; 9:8228-8233. [PMID: 30542571 PMCID: PMC6240800 DOI: 10.1039/c8sc02276c] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/26/2018] [Indexed: 11/21/2022] Open
Abstract
Here we show that 4-aminocyclohexanecarboxylic acid is a rigid stretcher building block for the preparation of cyclic peptides that self-assemble to form peptide nanotubes with large diameter and hydrophobic pores. The hydrophobic properties of the resulting nanotubes provided by the two methylene groups per δ-residue allow the encapsulation of C60 moieties forming a new type of bionanopeapod structure.
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Affiliation(s)
- Alejandro Lamas
- Singular Research Centre in Chemical Biology and Molecular Materials, (CIQUS) , Organic Chemistry Department , University of Santiago de Compostela (USC) , 15782 Santiago de Compostela , Spain . ;
| | - Arcadio Guerra
- Singular Research Centre in Chemical Biology and Molecular Materials, (CIQUS) , Organic Chemistry Department , University of Santiago de Compostela (USC) , 15782 Santiago de Compostela , Spain . ;
| | - Manuel Amorín
- Singular Research Centre in Chemical Biology and Molecular Materials, (CIQUS) , Organic Chemistry Department , University of Santiago de Compostela (USC) , 15782 Santiago de Compostela , Spain . ;
| | - Juan R Granja
- Singular Research Centre in Chemical Biology and Molecular Materials, (CIQUS) , Organic Chemistry Department , University of Santiago de Compostela (USC) , 15782 Santiago de Compostela , Spain . ;
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9
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Kharissova OV, Oliva González CM, Kharisov BI. Solubilization and Dispersion of Carbon Allotropes in Water and Non-aqueous Solvents. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02593] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Oxana V. Kharissova
- Universidad Autónoma de Nuevo León, Ave. Universidad, 66455 San Nicolás de los Garza, NL, Mexico
| | | | - Boris I. Kharisov
- Universidad Autónoma de Nuevo León, Ave. Universidad, 66455 San Nicolás de los Garza, NL, Mexico
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10
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Di Giosia M, Bomans PHH, Bottoni A, Cantelli A, Falini G, Franchi P, Guarracino G, Friedrich H, Lucarini M, Paolucci F, Rapino S, Sommerdijk NAJM, Soldà A, Valle F, Zerbetto F, Calvaresi M. Proteins as supramolecular hosts for C 60: a true solution of C 60 in water. NANOSCALE 2018; 10:9908-9916. [PMID: 29790558 DOI: 10.1039/c8nr02220h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Hybrid systems have great potential for a wide range of applications in chemistry, physics and materials science. Conjugation of a biosystem to a molecular material can tune the properties of the components or give rise to new properties. As a workhorse, here we take a C60@lysozyme hybrid. We show that lysozyme recognizes and disperses fullerene in water. AFM, cryo-TEM and high resolution X-ray powder diffraction show that the C60 dispersion is monomolecular. The adduct is biocompatible, stable in physiological and technologically-relevant environments, and easy to store. Hybridization with lysozyme preserves the electrochemical properties of C60. EPR spin-trapping experiments show that the C60@lysozyme hybrid produces ROS following both type I and type II mechanisms. Due to the shielding effect of proteins, the adduct generates significant amounts of 1O2 also in aqueous solution. In the case of type I mechanism, the protein residues provide electrons and the hybrid does not require addition of external electron donors. The preparation process and the properties of C60@lysozyme are general and can be expected to be similar to other C60@protein systems. It is envisaged that the properties of the C60@protein hybrids will pave the way for a host of applications in nanomedicine, nanotechnology, and photocatalysis.
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Affiliation(s)
- Matteo Di Giosia
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
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11
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Hasunuma N, Kawakami M, Hiramatsu H, Nakabayashi T. Preparation and photo-induced activities of water-soluble amyloid β-C 60 complexes. RSC Adv 2018; 8:17847-17853. [PMID: 35542080 PMCID: PMC9080474 DOI: 10.1039/c8ra02789g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 05/04/2018] [Indexed: 01/06/2023] Open
Abstract
We have shown that fullerene (C60) becomes soluble in water by mixing fullerene and amyloid β peptide (Aβ40) whose fibril structures are considered to be associated with Alzheimer's disease. The water-solubility of fullerene arises from the generation of a nanosized complex between fullerene and the monomer species of Aβ40 (Aβ40-C60). The prepared Aβ40-C60 exhibits photo-induced activity with visible light to induce the inhibition of Aβ40 fibrillation and the cytotoxicity for cultured HeLa cells. The observed photo-induced phenomena result from the generation of singlet oxygen via photoexcitation, inducing oxidative damage to Aβ40 and HeLa cells. The oxidized Aβ40 following photoexcitation of Aβ40-C60 was confirmed by mass spectrometry.
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Affiliation(s)
- Naoki Hasunuma
- Graduate School of Pharmaceutical Sciences, Tohoku University Sendai 980-8578 Japan
| | - Masahiro Kawakami
- Graduate School of Pharmaceutical Sciences, Tohoku University Sendai 980-8578 Japan
| | - Hirotsugu Hiramatsu
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University 1001, Ta-Hsueh Road Hsinchu 30010 Taiwan
| | - Takakazu Nakabayashi
- Graduate School of Pharmaceutical Sciences, Tohoku University Sendai 980-8578 Japan
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12
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Di Giosia M, Valle F, Cantelli A, Bottoni A, Zerbetto F, Calvaresi M. C 60 Bioconjugation with Proteins: Towards a Palette of Carriers for All pH Ranges. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E691. [PMID: 29702620 PMCID: PMC5978068 DOI: 10.3390/ma11050691] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 12/28/2022]
Abstract
The high hydrophobicity of fullerenes and the resulting formation of aggregates in aqueous solutions hamper the possibility of their exploitation in many technological applications. Noncovalent bioconjugation of fullerenes with proteins is an emerging approach for their dispersion in aqueous media. Contrary to covalent functionalization, bioconjugation preserves the physicochemical properties of the carbon nanostructure. The unique photophysical and photochemical properties of fullerenes are then fully accessible for applications in nanomedicine, sensoristic, biocatalysis and materials science fields. However, proteins are not universal carriers. Their stability depends on the biological conditions for which they have evolved. Here we present two model systems based on pepsin and trypsin. These proteins have opposite net charge at physiological pH. They recognize and disperse C60 in water. UV-Vis spectroscopy, zeta-potential and atomic force microscopy analysis demonstrates that the hybrids are well dispersed and stable in a wide range of pH’s and ionic strengths. A previously validated modelling approach identifies the protein-binding pocket involved in the interaction with C60. Computational predictions, combined with experimental investigations, provide powerful tools to design tailor-made C60@proteins bioconjugates for specific applications.
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Affiliation(s)
- Matteo Di Giosia
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Francesco Valle
- Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Consiglio Nazionale delle Ricerche, via P. Gobetti 101, 40129 Bologna, Italy.
| | - Andrea Cantelli
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Andrea Bottoni
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Francesco Zerbetto
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
| | - Matteo Calvaresi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy.
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Abstract
Biological foams contain a cocktail of unusual proteins with diverse properties. Natural foam proteins have surfactant properties equal to or better than conventional detergents. They reveal new physical principles based on conformational change at interfaces. They illustrate alternative surfactant mechanisms not available to conventional detergents. Can act synergistically to form and stabilize bio-compatible, hydrated foam structures.
Foams and surfactants are relatively rare in biology because of their potential to harm cell membranes and other delicate tissues. However, in recent work we have identified and characterized a number of natural surfactant proteins found in the foam nests of tropical frogs and other unusual sources. These proteins, and their associated foams, are relatively stable and bio-compatible, but with intriguing molecular structures that reveal a new class of surfactant activity. Here we review the structures and functional mechanisms of some of these proteins as revealed by experiments involving a range of biophysical and biochemical techniques, with additional mechanistic support coming from more recent site-directed mutagenesis studies.
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Affiliation(s)
- Alan Cooper
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Steven J Vance
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Brian O Smith
- Institute of Molecular, Cell & Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ, UK
| | - Malcolm W Kennedy
- Institute of Molecular, Cell & Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ, UK.,Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ, UK
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14
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Castro E, Hernandez Garcia A, Zavala G, Echegoyen L. Fullerenes in Biology and Medicine. J Mater Chem B 2017; 5:6523-6535. [PMID: 29225883 PMCID: PMC5716489 DOI: 10.1039/c7tb00855d] [Citation(s) in RCA: 173] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Fullerenes and related carbon based derivatives have shown a growing relevance in biology and medicine, mainly due to the unique electronic and structural properties that make them excellent candidates for multiple functionalization. This review focuses on the most recent developments of fullerene derivatives for different biological applications.
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Affiliation(s)
- Edison Castro
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, TX, USA
| | - Andrea Hernandez Garcia
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, TX, USA
| | - Gerardo Zavala
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, TX, USA
| | - Luis Echegoyen
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, TX, USA
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Trozzi F, Marforio TD, Bottoni A, Zerbetto F, Calvaresi M. Engineering the Fullerene-protein Interface by Computational Design: The Sum is More than its Parts. Isr J Chem 2016. [DOI: 10.1002/ijch.201600127] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Francesco Trozzi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; via F. Selmi 2 40126 Bologna Italy
| | - Tainah Dorina Marforio
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; via F. Selmi 2 40126 Bologna Italy
| | - Andrea Bottoni
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; via F. Selmi 2 40126 Bologna Italy
| | - Francesco Zerbetto
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; via F. Selmi 2 40126 Bologna Italy
| | - Matteo Calvaresi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; via F. Selmi 2 40126 Bologna Italy
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16
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Mchedlov-Petrossyan NO, Al-Shuuchi YTM, Kamneva NN, Marynin AI, Klochkov VK. Interactions of Nanosized Aggregates of Fullerene C 60 with Electrolytes in Methanol: Coagulation and Overcharging of Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10065-10072. [PMID: 27610710 DOI: 10.1021/acs.langmuir.6b02533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Contrary to numerous studies on the stability of fullerene aqueous colloidal solutions in the presence of electrolytes, the corresponding issue for the organosols was until recently almost unexplored. In this article, the state of C60 in methyl alcohol and the regularities of the coagulation of colloidal solution in this solvent were examined in the presence of electrolytes. Alcosols with a fullerene concentration of 4 × 10-6 M were prepared by the dilution of the C60 saturated solution in toluene by methanol. The ca. 300 nm-sized aggregates possess a negative electrokinetic potential value, ζ = -37 ± 8 mV. To determine the critical coagulation concentrations, CCC, the size increase of the species was followed up using the dynamic light scattering method. The analysis of the coagulation in terms of the Fuchs function, W, was accompanied by zeta potential monitoring. The consideration of the data for 1:1 electrolytes NaClO4 and N(n-C4H9)4ClO4 allows a rough estimate of the Hamaker constant of fullerene-fullerene attraction. Whereas in the case of these two electrolytes the colloidal species are negatively charged at the CCC, expressed overcharging of up to ζ = +36 mV by H+, Ca2+, Ba2+, and La3+ ions was observed. The action of HClO4 should be attributed to the interfacial acid-base reaction, whereas the excessive attraction of metal cations is caused by poor solvation in methanol; the negative charge is restored when the metal cations are shielded by a macrocyclic ligand.
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Affiliation(s)
| | - Younis T M Al-Shuuchi
- Department of Physical Chemistry, V. N. Karazin National University , 61022 Kharkov, Ukraine
| | - Nika N Kamneva
- Department of Physical Chemistry, V. N. Karazin National University , 61022 Kharkov, Ukraine
| | | | - Vladimir K Klochkov
- Institute for Scintillation Materials NAS of Ukraine , 61001 Kharkov, Ukraine
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